Full-automatic production line for shoe mold

Abstract

The present application relates to the technical field of shoe mold production, and particularly relates to a full-automatic assembly line for producing shoe molds, feeding stations for conveying blanks in sequence according to blank processing sequences, blank loading detection stations for detecting whether the sizes of the blanks are qualified, rough machining stations for performing preliminary processing on the blanks, assembly stations for assembling the blanks and bottom plates together, and finishing stations for performing forming processing on the blanks, the blank loading detection stations, the rough machining stations and the assembly stations are provided with picking stations for transferring the blanks, and the assembly stations and the finishing stations are provided with transfer stations for transferring the blanks, and the present application has the beneficial effect of realizing automation of shoe mold production.

Description

Technical Field

[0001] This invention relates to the field of shoe mold production technology, and more specifically to a fully automated production line for producing shoe molds. Background Technology

[0002] The production process of shoe molds includes blank blanking, rough machining of the blank, and fine machining of the blank. After fine machining, the shoe mold is obtained. The fine machining of the blank requires the installation of a base plate on the blank, which is then fixed to the CNC machine tool using a fixture. In order to install the base plate on the blank, threaded holes need to be drilled on the blank during rough machining. The base plate and the blank are connected by fasteners. Between each process, workers need to move the blank, which is an inefficient production method. To address this, patent application CN202021040607.X discloses a fully automated shoe mold production line, including a control mechanism, a material waiting mechanism, a conveying mechanism, and at least four CNC machining machines. Each CNC machining machine has a slave PLC controller, and the CNC machining machines are numbered as Slave Machine 1, Slave Machine 2, Slave Machine 3, etc. The control mechanism is a master PLC controller. The material receiving mechanism includes a worktable and multiple transport trolleys that move in a ring on the worktable. Each transport trolley has a different number. The worktable has a pick-up point and a loading point. A sensor is installed at the pick-up point. The conveying mechanism includes a ground rail, on which a robotic arm slides. CNC machining equipment is located on both sides of the rail. By adopting the above technical solution, multiple CNC machining equipment can work simultaneously. However, this production line has the following disadvantages: 1. The process of installing the blank on the transport trolley is not fully disclosed according to the instruction manual and the accompanying drawings. It is impossible to know how to install it, and there is a lack of automatic installation equipment and procedures; 2. It is impossible to detect whether the size of the blank is within the usable range, and there is a lack of rejection device. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a fully automated production line for producing shoe molds, thereby achieving automation of shoe mold production, in order to address the shortcomings of the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a feeding station for transporting blanks, a loading and inspection station for checking whether the blank dimensions are qualified, a roughing station for preliminary processing of the blanks, an assembly station for assembling the blanks and the base plate, and a finishing station for forming the blanks, arranged sequentially according to the blank processing sequence; a picking station for transferring blanks is provided between the loading and inspection station, the roughing station and the assembly station; and a transfer station for transferring blanks is provided between the assembly station and the finishing station.

[0005] The present invention, which has the above-mentioned features, decomposes the blank from feeding to forming into multiple processes and sets up multiple workstations, each of which realizes automated processing; it sets up a part picking workstation and a transfer workstation to replace manual labor, realize the connection between each workstation, and ensure the automation of the production line; by using this production line, the automation of shoe mold production is realized.

[0006] A further feature of this invention is that: a loading inspection platform is provided at the loading inspection station; the loading inspection platform is equipped with an inspection mechanism for detecting whether the workpiece size is qualified and a clamping mechanism for sending the workpiece from the loading station to the inspection mechanism; the inspection mechanism includes a base, a first transverse positioning component disposed in the length direction of the base and a first longitudinal positioning component disposed in the width direction of the base; the first longitudinal positioning component is located above the first transverse positioning component, and the two are arranged in a cross shape; the first longitudinal positioning component includes a first power component disposed on the base and two first clamping plates connected to the first power component and capable of synchronously moving closer or further away along the longitudinal direction under its drive; a workpiece placement space is formed between the two first clamping plates; the power source of the first power component is a servo motor; the first transverse positioning component includes a second power component and two second clamping plates connected to the second power component and capable of synchronously moving closer or further away along the longitudinal direction under its drive; the two second clamping plates are disposed on both sides of the first longitudinal positioning component; the power source of the second power component is also a servo motor.

[0007] The present invention, possessing the above-mentioned features, employs a detection mechanism and a servo motor as the power source to drive the movement of the first and second clamping plates. This mechanism can measure the length and width dimensions of the workpiece. The distance between the two first clamping plates after clamping the workpiece is the width of the workpiece, and the distance between the two second clamping plates after clamping the workpiece is the length of the workpiece. The dimensional information is shared within the shoe mold production line. If the dimensions are qualified, the workpiece proceeds to the next process via the pick-up station; if the dimensions are unqualified, it is sent to the scrap area. This achieves the prediction and automatic measurement of workpiece dimensions and can automatically screen out scrap. The detection mechanism combines a first transverse positioning component and a first longitudinal positioning component. Under the push of the first and second clamping plates, the workpiece finds its center, facilitating the subsequent robotic arm to accurately locate and clamp the workpiece, thereby improving the efficiency of subsequent processes.

[0008] A further feature of this invention is that the gripping mechanism includes a rotating bracket and a third power component that drives the rotating bracket to rotate around an axis. One end of the rotating bracket is rotatably connected to the loading and inspection table, and the other end is suspended and equipped with a first slide base that can be raised and lowered in the vertical direction. The first slide base is equipped with a gripper, which includes a power component fixedly connected to the first slide base, a connecting rod arranged on both sides of the output end of the power component and hinged thereto, and a clamping block hinged to the connecting rod. The power component is vertically arranged, with its upward-facing end being the output end and its downward-facing end being equipped with a sensor that can detect the thickness of the workpiece. The first slide base is equipped with a first slider assembly that is slidably connected to the two clamping blocks, and the slide rail of the first slider assembly is arranged along the length direction of the base.

[0009] The present invention, which has the above-mentioned features, enables multi-angle rotation of the gripper by setting a rotating bracket, and can be used to grip workpieces at the feeding station and to clamp unqualified workpieces to the scrap area; by setting a sensor at the end of the power component to detect the thickness of the workpiece, the full dimensions of the workpiece can be obtained in conjunction with the detection mechanism.

[0010] A further feature of this invention is that: an assembly machine is provided at the assembly station; the assembly machine includes a frame and a conveyor frame for transporting the base plate; a working plane is provided on the frame; a gantry frame is mounted on the working plane; one end of the conveyor frame is located outside the frame, and the other end is located below the gantry frame; a second slide table is slidably connected to the upper beam of the gantry frame, which can reciprocate along the length of the upper beam; a slide plate is slidably connected to the second slide table, which can reciprocate along the vertical direction; at least one assembly component is slidably connected to the slide plate, which can screw bolts into the base plate; a clamping chuck is fixed to the bottom of the slide plate, which can clamp and move the pull rod on the base plate; the end of the conveyor frame is located below the clamping chuck; and an automatic centering fixture for clamping the blank is also provided on the working plane.

[0011] The present invention, possessing the above-mentioned features, includes: a clamping chuck for holding the base plate, enabling automatic feeding of the base plate; an assembly tool for automatically tightening bolts; an assembly machine at the assembly station to automate the assembly of the base plate and the blank, improving assembly and production efficiency; an automatic centering fixture on the working plane for clamping the blank, facilitating the assembly of the base plate onto the blank; the clamping chuck for holding the base plate's pull rod, moving the base plate from the conveyor to above the blank; and the assembly tool descending to screw the bolts into the base plate.

[0012] A further feature of the present invention is that the clamping chuck includes a chuck body, and the two sides of the chuck body are provided with clamping grooves for inserting a pull rod on the base plate. The openings of the clamping grooves are located on both sides of the chuck body. The chuck body is symmetrically provided with two movable cavities and a chuck seat installed in the movable cavities. The end of the chuck body away from the gantry is provided with a hydraulic cylinder for driving the chuck seat to move in the movable cavity. The chuck seat includes a connecting part connected to the output end of the hydraulic cylinder and a snap-fit ​​part that cooperates with the pull rod on the base plate. The snap-fit ​​part is provided with an arc-shaped groove that cooperates with the pull rod. The clamping groove is provided with an arc-shaped opening that communicates with the movable cavity and allows the arc-shaped groove to be exposed.

[0013] The present invention, which has the above features, uses a clamping chuck to hold the base plate, and the height is adapted to the pull rod on the base plate, which increases the clamping stability and improves the clamping efficiency. When the clamping chuck descends with the slide plate to near the base plate, the hydraulic cylinder drives the chuck seat to move towards the side closer to the slide plate, and the arc-shaped groove on the locking part is exposed from the arc opening and locks with the pull rod.

[0014] A further feature of this invention is that: the roughing station is equipped with a CNC machine tool for milling and drilling the blank; the CNC machine tool is equipped with an automatic centering fixture for clamping the blank; the automatic centering fixture includes a mounting base; the mounting base has a second transverse positioning component along its length and a second longitudinal positioning component along its width; the second longitudinal positioning component is located above the second transverse positioning component, and the two are arranged in a cross shape; the second longitudinal positioning component includes a workpiece placement platform, third clamping plates located on both sides of the workpiece placement platform that can move synchronously closer or farther along the longitudinal direction, and a fourth power component for driving the third clamping plates to reciprocate; the second transverse positioning component includes a moving platform located below the workpiece placement platform, fourth clamping plates located on both sides of the moving platform that can move synchronously closer or farther along the transverse direction, and a fifth power component for driving the fourth clamping plates to reciprocate; the end face of the fourth clamping plate is higher than the end face of the workpiece placement platform.

[0015] The present invention, possessing the above-mentioned features, employs a combination of a second transverse positioning component and a second longitudinal positioning component to position the workpiece in both the length and width directions, respectively. Simply place the workpiece on the workpiece placement platform, drive two third clamping plates to move simultaneously and in opposite directions until the workpiece is clamped, and then drive two fourth clamping plates to move simultaneously and in opposite directions until the workpiece is clamped, thus finding the center of the workpiece. The process is fast and fully automatic, improving production efficiency. After centering, the third and fourth clamping plates can act as fixtures to restrict workpiece movement, assist in drilling, and improve drilling accuracy.

[0016] A further feature of the present invention is that a plate chain machine for transporting blanks is provided at the feeding station, and one end of the plate chain machine is connected to the feeding and detection station.

[0017] The present invention with the above features: the blank with a QR code is sent to the feeding and inspection station by the plate chain machine, realizing the automatic transfer of materials. The worker only needs to stick the QR code on the blank, which greatly reduces labor costs. The plate chain machine runs smoothly and has a large placement area.

[0018] A further feature of the present invention is that: a ground rail is provided at the part-picking station, and a robotic arm capable of gripping the blank is slidably fitted on the ground rail; the feeding station, the material loading and inspection station, and the rough machining station are arranged side by side on one side of the part-picking station.

[0019] The present invention, which has the above-mentioned features, can move blanks from one station to another by setting up a ground rail and a matching robot, replacing manual labor, saving labor costs, and deepening the automation level of the production line; the feeding station, the loading and inspection station and the rough processing station are all set on one side of the ground rail, which facilitates the robot to move blanks.

[0020] A further feature of the present invention is that: a double-speed chain and a ground rail are provided at the transfer station; a feeding fixture for clamping the base plate is provided on the double-speed chain and can move forward with the double-speed chain; a turning machine for transferring the workpiece from the assembly station to the double-speed chain is provided between one end of the double-speed chain and the assembly station; the turning machine includes a turning frame, a turning arm rotatably connected to the turning frame, and a gripper provided at the end of the turning arm; and a robotic arm for clamping blanks is slidably fitted on the ground rail.

[0021] The present invention, which has the above-mentioned features, involves: a blank equipped with a base plate being flipped upwards by a flipping arm, with the base plate below; a gripper holding the blank and placing it on a feeding fixture, which can move forward with a double-speed chain; by setting a feeding fixture on the double-speed chain, the feeding stability is improved; by setting a flipping machine at one end of the assembly station and the double-speed chain, the orientation of the blank is changed, making it easier to place it on the feeding fixture; a robotic arm is also set at the transfer station to install the blank on a precision CNC machine tool, realizing full automation of the production line.

[0022] A further feature of the present invention is that the feeding fixture includes a feeding connecting seat connected to the speed-multiplying chain, a lifting cylinder is installed at the bottom of the feeding connecting seat, the piston rod of the lifting cylinder passes through the feeding connecting seat and a lifting plate is installed at its end, and a positioning core cylinder adapted to the pull rod on the base plate is installed on the lifting plate.

[0023] The present invention having the above features: the lifting plate can drive the base plate and the blank to rise and fall under the drive of the lifting cylinder, so as to meet the needs of the blank to be transferred between work stations; the pull rod on the base plate can be inserted into the positioning core cylinder, so that the blank with the base plate is clamped onto the double speed chain.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the feeding station and the material loading and detection station in an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the material loading and inspection station in an embodiment of the present invention.

[0028] Figure 4 This is a schematic diagram of the gripping mechanism according to an embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the automatic centering fixture according to an embodiment of the present invention.

[0030] Figure 6 This is a top view of the automatic centering fixture according to an embodiment of the present invention.

[0031] Figure 7 This is an exploded view of the automatic centering fixture according to an embodiment of the present invention.

[0032] Figure 8 This is a schematic diagram of the structure of the first slide in the automatic centering fixture of this invention.

[0033] Figure 9 This is a schematic diagram of the assembly station in an embodiment of the present invention.

[0034] Figure 10 This is a schematic diagram of the assembly of an embodiment of the present invention.

[0035] Figure 11 This is a schematic diagram of the chuck mounting structure according to an embodiment of the present invention.

[0036] Figure 12 This is a schematic diagram of the transfer station in an embodiment of the present invention.

[0037] Figure 13 This is a schematic diagram of the feeding fixture according to an embodiment of the present invention.

[0038] Figure 14 This is a schematic diagram of the structure of the base plate in an embodiment of the present invention. Implementation

[0039] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0040] like Figure 1-14The diagram shows a fully automated production line for producing shoe molds. The following stations are arranged sequentially according to the blank processing sequence: a feeding station a for transporting blank 1, a loading and inspection station b for checking the blank dimensions, a roughing station c for preliminary processing of the blank, an assembly station d for assembling the blank and the base plate 2, and a finishing station e for shaping the blank. A blank removal station f is located between the loading and inspection station b, the roughing station c, and the assembly station d. The feeding station a, loading and inspection station b, and the roughing station c are arranged side-by-side on one side of the removal station f. A blank transfer station g is located between the assembly station and the finishing station for transferring blanks.

[0041] A plate chain conveyor a1 for transporting blanks is provided at feeding station a. One end of the plate chain conveyor a1 is connected to the feeding and inspection station.

[0042] The feeding inspection station b is equipped with a feeding inspection table b1. The feeding inspection table b1 is equipped with an inspection mechanism b2 for inspecting whether the workpiece size is qualified, and a gripping mechanism b3 for sending the workpiece from the feeding station to the inspection mechanism.

[0043] The inspection mechanism b2 includes a base b21. A first transverse positioning component b22 is provided on the length direction (X-axis) of the base b21, and a first longitudinal positioning component b23 is provided on the width direction (Y-axis) of the base b21. The first longitudinal positioning component b23 is located above the first transverse positioning component b22, and the two are arranged in a cross shape. The first longitudinal positioning component b23 includes a first power component set on the base b21 and two first clamping plates b232 connected to the first power component and driven by it to move synchronously closer or farther along the longitudinal direction. A workpiece placement space b233 is formed between the two first clamping plates b232 for placing the workpiece 3. The first transverse positioning component b22 includes a second power component and two second clamping plates b221 connected to the second power component and driven by it to move synchronously closer or farther along the longitudinal direction. The two second clamping plates b221 are respectively set on both sides of the first longitudinal positioning component. The power source of the first power component and the second power component is a servo motor b234. The structure of the first power component and the second power component is similar to the structure of the fourth and fifth power components in the automatic centering fixture, which will not be described in detail here.

[0044] The gripping mechanism b3 includes a rotating bracket b31 and a third power component that drives the rotating bracket b31 to rotate around an axis. One end of the rotating bracket b31 is rotatably connected to the loading and inspection table b1, and the other end is suspended with a first slide base b33 that can be raised and lowered in the vertical direction. A gripper b34 is provided on the first slide base b33. The gripper b34 includes a power component b341 fixedly connected to the first slide base b33, connecting rods b342 arranged on both sides of the output end of the power component b341 and hinged thereto, and a clamp hinged to the connecting rods b342. Block b343, the part of clamping block b343 that contacts the workpiece is covered with conical blocks b3431, the power component b341 is vertically set, its upward end is the output end, and the downward end is equipped with a sensor b36 that can detect the thickness of the workpiece. The power component b341 is a hydraulic cylinder, and its output end can perform vertical lifting and lowering movements. The first slide base b33 is equipped with a first slider assembly b35 that is slidably connected to the two clamping blocks b343. The slide rail b351 of the first slider assembly b35 is set along the length direction of the base b21.

[0045] The third power assembly includes a passive gear b321 located at the bottom of the rotating bracket b31 and a drive gear b322 located on the loading and inspection platform b1 that meshes with the passive gear b321. The loading and inspection platform b1 is equipped with a motor (not shown in the figure) that drives the drive gear b322 to rotate.

[0046] At the roughing station c, there is a CNC machine tool for milling and drilling the blank. The CNC machine tool is equipped with an automatic centering fixture for clamping the blank, including a mounting base c4. The mounting base c4 can be detachably connected to the worktable of the CNC milling machine or CNC drilling machine through fasteners. The mounting base c4 has a second transverse positioning component c2 on its length direction (X-axis) and a second longitudinal positioning component c3 on its width direction (Y-axis). The second longitudinal positioning component c3 is located above the second transverse positioning component c2, and the two are distributed in a cross shape.

[0047] The second longitudinal positioning component c3 includes a workpiece placement platform c31, third clamping plates c32 located on both sides of the workpiece placement platform c31 that can move synchronously closer or further apart longitudinally, and a fourth power component for driving the third clamping plates c32 to reciprocate. The third clamping plate c32 includes a first push plate c321 located on the workpiece placement platform c31 and a first slide c322 located below the workpiece placement platform c31. The two lateral ends of the first push plate c321 are connecting ends and are detachably connected to the first slide c322 by fasteners. The fourth power component is disposed inside the workpiece placement platform c31 and includes a first lead screw c33 and first lead screw nuts c34 disposed at both ends of the first lead screw c33. The first lead screw c33 is a positive and negative lead screw. The first slide table c322 is detachably connected to the first lead screw nut c34. The lower end of the first slide table c322 is provided with a connecting pipe c3221 through which the first lead screw nut c34 passes. The end faces of the first lead screw nut c34 and the connecting pipe c3221 are detachably connected by fasteners. The base 1 is provided with a first slide rail seat c35. The first slide table c322 is mounted on the first slide rail seat c35 and is slidably connected to the first slide rail seat c35. One end of the first slide rail seat c35 is built with a first power source c36 that can drive the first lead screw c33 to rotate. The first power source c36 is a hydraulic motor. The output end of the hydraulic motor is provided with a drive gear c37. One end of the first lead screw c33 is provided with a driven gear c38. The drive gear c37 and the driven gear c38 mesh.

[0048] The second lateral positioning component c2 includes a movable platform c21 located below the workpiece placement platform c31, fourth clamping plates c22 located on both sides of the movable platform c21 that can move synchronously closer or further apart laterally, and a fifth power component that drives the fourth clamping plates c22 to reciprocate. The end face of the fourth clamping plate c22 is higher than the end face of the workpiece placement platform c31. The fourth clamping plate c22 includes a second push plate c221 located on the movable platform c21 and a second slide c222 located below the movable platform c21. The longitudinal ends of the second push plate c221 are connecting ends and are detachably connected to the second slide c222. The fifth power component is disposed inside the movable platform c31, and the second slide c222 is connected to the fifth power component. The fifth power component includes a second lead screw c23. A second lead screw nut c24 is set at both ends of the second lead screw c23. The second lead screw c23 passes through the workpiece placement platform c31, and the first slide rail seat c35 is divided into two to facilitate the passage of the second lead screw c23. The lower part of the second clamping plate is detachably connected to the second lead screw nut. The mounting base c4 is provided with the second slide rail seat c25. The second slide table c222 is mounted on the second slide rail seat c25 and slidably connected to the second slide rail seat c25. A second power source c26, which is a hydraulic motor, is provided on the outside of the second slide rail seat c25 to drive the rotation of the second lead screw c23. The output end of the hydraulic motor is provided with a first sprocket c27. One end of the second lead screw c23 is provided with a second sprocket c28. The first sprocket c27 and the second sprocket c28 are driven by a chain c29.

[0049] An assembly machine is provided at assembly station d. The assembly machine includes a frame d1 and a conveyor frame d9 for transporting base plates. A working plane d11 is provided on the frame 1, and a gantry frame d12 is mounted on the working plane d11. One end of the conveyor frame d9 is located outside the frame d1, and the other end is located below the gantry frame d12. A third slide d2, which can reciprocate along the length of the upper beam d121, is slidably connected to the upper beam d121 of the gantry frame d12. A slide plate d3, which can reciprocate vertically, is slidably connected to the third slide d2. A motor is provided on the third slide d2 to drive the slide plate d3 to rise and fall. At least one assembly component d5, which can reciprocate vertically, is slidably connected to the slide plate d3. In this embodiment, two assembly components d5 are arranged side by side. 5. By setting a sliding plate, the two assemblies can be assembled on the slide table as a whole, realizing the synchronous lifting and lowering of the two assemblies. The two assemblies are also connected to the sliding plate through a sliding connection, realizing the separate adjustment of the two assemblies. At the same time, the lifting stroke of the assemblies is increased within the limited installation space. The assembly d5 can screw the bolt into the base plate. The bottom of the sliding plate d3 is fixed with a clamping chuck d7 that can clamp the pull rod 21 on the base plate 2 and drive it to move. The clamping chuck d7 and the sliding plate d3 are connected through the chuck fixing plate d8. The end of the conveyor frame d9 is located below the clamping chuck d7. The working plane d11 is provided with a fixture d10 for clamping the blank. The fixture d10 is located on one side of the clamping chuck d7. This fixture is an automatic centering tool.

[0050] One end of the assembly d5 facing the working plane 11 is the operating part d51, and the other end is the power part d52. The power part d52 includes a servo motor d521 and a motor buffer connector d522 connected to the output end of the servo motor d521. The operating part d51 is an internal hex wrench connected to the motor buffer connector d522. The slide table 2 is provided with a second slider assembly d21 connected to the assembly d5. The assembly d5 is provided with a sliding seat d53 fixedly connected to the second slider assembly d21. The sliding seat d53 is provided with at least one waist-shaped groove d531. In this embodiment, multiple waist-shaped grooves are provided in parallel. The slider of the second slider assembly d21 is provided with a connecting hole 211 that mates with the waist-shaped groove.

[0051] The clamping chuck d7 includes a chuck body d71. The chuck body d71 has clamping grooves d711 on both sides for inserting the pull rod 21 on the base plate 2. The openings of the clamping grooves d711 are located on both sides of the chuck body d71. The chuck body d71 has two symmetrically arranged movable cavities d712 and a chuck seat d713 installed in the movable cavities d712. The end of the chuck body d71 away from the gantry d12 is provided with a hydraulic cylinder d72 for driving the chuck seat d713 to move in the movable cavities d713. The chuck seat d713 includes a connecting part d7131 connected to the output end of the hydraulic cylinder d72 and a snap-fit ​​part d7132 that cooperates with the pull rod 21 on the base plate 2. The snap-fit ​​part d7132 has an arc-shaped groove d7133 that cooperates with the pull rod 21. The clamping groove d711 has an arc-shaped opening d7111 that communicates with the movable cavities d713 and allows the arc-shaped groove d7133 to be exposed.

[0052] A precision engraving machine is set up at the precision machining station e. The precision engraving machine is equipped with a chuck. For details, please refer to the invention patent "A Hydraulic Fixing Chuck Structure" with patent application number 202221838131.3. The chuck can hold the pull rod on the base plate, thereby fixing the blank on the precision engraving machine and milling the blank to make it into the shape of a shoe mold.

[0053] A ground rail f1 is provided at the picking station f. For details, please refer to the invention patent "A Ground Rail for a Fully Automated Production Line of Shoe Molds" with patent application number CN202021037379.0. A robotic arm f2 that can grip the blank is slidably fitted on the ground rail f1.

[0054] The transfer station g is equipped with a double-speed chain g1 and a ground rail f1. The double-speed chain g1 is equipped with a feeding fixture g2 that can move forward with the double-speed chain to hold the base plate 2. One end of the double-speed chain g1 is connected to the assembly station d to a flipping machine g3 that transfers the workpiece from the assembly station d to the double-speed chain g1. The flipping machine g3 includes a flipping frame g31, a flipping arm g32 that is rotatably connected to the flipping frame g31, and a gripper b34 located at the end of the flipping arm g33. A robotic arm f2 that can grip the blank is slidably fitted on the ground rail f1.

[0055] The feeding fixture g2 includes a feeding connector g21 connected to the speed-multiplying chain g1. A lifting cylinder g22 is installed at the bottom of the feeding connector g21. After the piston rod g221 of the lifting cylinder g22 passes through the feeding connector g21, a lifting plate g23 is installed at its end. A positioning core cylinder g24 that is compatible with the pull rod 21 on the base plate 2 is installed on the lifting plate g23.

[0056] In actual production, after the blank is affixed with a QR code, it is conveyed to the loading and inspection table along the plate chain conveyor. The gripping mechanism clamps one of the blanks and rotates it 90 degrees to the inspection mechanism. A sensor at the end of the power component in the gripping mechanism measures the thickness of the blank, i.e., its dimension in the Z-axis direction. The first and second clamping plates in the inspection mechanism, driven by the first and second power components respectively, move towards the blank and clamp it. Since the movement paths of the two clamping plates are the same, when all four clamp the blank simultaneously, the center of the blank in both the longitudinal and transverse directions is precisely located at the origin where the X and Y axes intersect. The center of the blank is accurately located by the first and second clamping plates. During the driving process, the servo motor can detect the distance between the two first clamping plates and the two second clamping plates to obtain the dimensions of the blank. If the dimensions are qualified, the robot arm in the part-picking station will clamp the blank and send it to the automatic centering fixture in the roughing station. If the dimensions are not qualified, the gripper will clamp the blank to the scrap recycling area located on one side of the loading inspection table. The CNC machine tool set in the roughing station for milling and drilling the blank can be a CNC milling machine or a CNC drilling machine. The automatic centering fixture is installed on the worktable of the CNC milling machine or CNC drilling machine. The blank is placed on the workpiece placement platform. First, the first power source is started, so that the two first clamping plates move closer to the workpiece at the same time. Since the moving paths of the two clamping plates are identical, when both clamp the workpiece simultaneously, the longitudinal center of the workpiece is exactly located at the origin where the X-axis and Y-axis intersect. Then, the second power source is activated, causing both second clamping plates to move towards the workpiece simultaneously. Because the moving paths of the two second clamping plates are identical, when both clamp the workpiece simultaneously, the transverse center of the workpiece is exactly located at the origin where the X-axis and Y-axis intersect. At this point, the center of the workpiece has been found, and the machine tool can be started to process the blank. During processing, two additional threaded holes will be machined on the blank, which can be matched with the threaded holes on the base plate. The rough-machined blank is then transported to the assembly station under the gripper of the robot arm and placed on the working plane of the assembly machine. Inside the fixture, the base plate is held in place by the fixture and sent to the clamping chuck by the conveyor frame. The clamping chuck descends and clamps the two pull rods on the base plate, moving the base plate and placing it on the blank. The worker inserts bolts into the threaded holes on the base plate, the assembly parts are lowered and started, and the bolts are screwed into the threaded holes of the base plate and the blank to connect the two. The assembled blank is clamped by the gripper of the flipping machine and flipped about 180 degrees with the flipping arm. The pull rods on the base plate are inserted into the positioning core of the feeding fixture. The blank moves with the feeding fixture on the double-speed chain to one end near the finishing station. The robot arm clamps the blank to the engraving machine. The chuck on the engraving machine is fixed to the pull rods on the base plate. The engraving machine processes the blank to form a shoe mold.

Claims

1. A fully automated production line for producing shoe molds, characterized in that: The workpiece is arranged in the following order according to the blank processing sequence: a feeding station for transporting blanks, a loading and inspection station for checking the blank dimensions, a roughing station for preliminary processing of the blanks, an assembly station for assembling the blanks with the base plate, and a finishing station for shaping the blanks. A blank removal station is provided between the loading and inspection station, the roughing station, and the assembly station. A blank transfer station is provided between the assembly station and the finishing station. A loading and inspection table is provided at the loading and inspection station. The loading and inspection table is equipped with a detection mechanism for checking the workpiece dimensions and a gripping mechanism for transferring the workpiece from the feeding station to the detection mechanism. The gripping mechanism contains a sensor for detecting the workpiece thickness. The detection mechanism includes a base plate. The system comprises a base, a first transverse positioning component along the length of the base, and a first longitudinal positioning component along the width of the base. The first longitudinal positioning component is located above the first transverse positioning component, and the two components are arranged in a cross shape. The first longitudinal positioning component includes a first power component mounted on the base and two first clamping plates connected to the first power component and capable of synchronously moving closer or further apart along the longitudinal direction under its drive. A workpiece placement space is formed between the two first clamping plates. The power source of the first power component is a servo motor. The first transverse positioning component includes a second power component and two second clamping plates connected to the second power component and capable of synchronously moving closer or further apart along the longitudinal direction under its drive. The two second clamping plates are... Located on both sides of the first longitudinal positioning component, the second power component is also powered by a servo motor. An assembly machine is provided at the assembly station. The assembly machine includes a frame and a conveyor frame for transporting the base plate. A working plane is provided on the frame, and a gantry frame is mounted on the working plane. One end of the conveyor frame is located outside the frame, and the other end is located below the gantry frame. A second slide table is slidably connected to the upper beam of the gantry frame, capable of reciprocating along the length of the upper beam. A slide plate is slidably connected to the second slide table, capable of reciprocating vertically. At least one assembly component is slidably connected to the slide plate, capable of reciprocating vertically. The assembly component can screw bolts into the base plate. A pull rod on the base plate is fixed at the bottom of the slide plate and can clamp and drive it. The movable clamping chuck has the end of the conveyor frame located below it. An automatic centering fixture for clamping blanks is also provided on the working plane. The clamping chuck includes a chuck body with clamping grooves on both sides for inserting pull rods from the base plate. The openings of the clamping grooves are located on both sides of the chuck body. The chuck body has two symmetrically arranged movable cavities and a chuck seat installed within each movable cavity. A hydraulic cylinder is provided at the end of the chuck body away from the gantry frame to drive the chuck seat to move within the movable cavity. The chuck seat includes a connecting part connected to the output end of the hydraulic cylinder and a locking part that cooperates with the pull rod of the base plate. The locking part has an arc-shaped groove that cooperates with the pull rod. The clamping groove has an arc-shaped opening that communicates with the movable cavity and allows the arc-shaped groove to be exposed.

2. The fully automated production line for producing shoe molds according to claim 1, characterized in that: The gripping mechanism includes a rotating bracket and a third power component that drives the rotating bracket to rotate around an axis. One end of the rotating bracket is rotatably connected to the feeding detection table, and the other end is suspended and equipped with a first slide base that can be raised and lowered in the vertical direction. The first slide base is equipped with a gripper. The gripper includes a power component fixedly connected to the first slide base, a connecting rod arranged on both sides of the output end of the power component and hinged thereto, and a clamping block hinged to the connecting rod. The power component is vertically arranged, with its upward-facing end being the output end. The sensor is arranged at the downward-facing end of the power component. The first slide base is equipped with a first slider assembly that is slidably connected to the two clamping blocks. The slide rail of the first slider assembly is arranged along the length direction of the base.

3. The fully automated production line for producing shoe molds according to claim 1, characterized in that: The roughing station is equipped with a CNC machine tool for milling and drilling blanks. The CNC machine tool is equipped with an automatic centering fixture for clamping the blanks. The automatic centering fixture includes a mounting base. The mounting base has a second transverse positioning component along its length and a second longitudinal positioning component along its width. The second longitudinal positioning component is located above the second transverse positioning component, and the two are arranged in a cross shape. The second longitudinal positioning component includes a workpiece placement platform, third clamping plates located on both sides of the workpiece placement platform that can move synchronously closer or farther along the longitudinal direction, and a fourth power component that drives the third clamping plates to reciprocate. The second transverse positioning component includes a moving platform located below the workpiece placement platform, fourth clamping plates located on both sides of the moving platform that can move synchronously closer or farther along the transverse direction, and a fifth power component that drives the fourth clamping plates to reciprocate. The end face of the fourth clamping plate is higher than the end face of the workpiece placement platform.

4. The fully automated production line for producing shoe molds according to claim 1, characterized in that: The feeding station is equipped with a plate chain machine for transporting blanks, and one end of the plate chain machine is connected to the feeding and inspection station.

5. The fully automated production line for producing shoe molds according to claim 1, characterized in that: The part-picking station is equipped with a ground rail, on which a robotic arm capable of gripping blanks is slidably fitted. The feeding station, the material loading and inspection station, and the rough machining station are arranged side by side on one side of the part-picking station.

6. The fully automated production line for producing shoe molds according to claim 1, characterized in that: The transfer station is equipped with a double-speed chain and a ground rail. The double-speed chain is equipped with a feeding fixture for clamping the base plate, which can move forward with the double-speed chain. One end of the double-speed chain is connected to the assembly station to a turnover machine for transferring the workpiece from the assembly station to the double-speed chain. The turnover machine includes a turnover frame, a turnover arm rotatably connected to the turnover frame, and a gripper set at the end of the turnover arm. A robotic arm for clamping blanks is slidably fitted on the ground rail.

7. The fully automated production line for producing shoe molds according to claim 6, characterized in that: The feeding fixture includes a feeding connector connected to a speed-multiplying chain. A lifting cylinder is installed at the bottom of the feeding connector. After the piston rod of the lifting cylinder passes through the feeding connector, a lifting plate is installed at its end. A positioning core cylinder adapted to the pull rod on the base plate is installed on the lifting plate.

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