High-pressure water cutting device for pouring gate of magnesium alloy die casting

Abstract

The high-pressure water cutting device comprises a [-shaped protective fence frame, an inlet and outlet is formed in the front side of the protective fence frame, a rectangular annular drainage ditch is formed in the position, on the inner side of the protective fence frame, of the ground, and a robot is arranged in the middle of the position, on the inner side of the drainage ditch, of the ground; the tail end of a mechanical arm on the robot is connected with a water jet cutter and a flushing spray head, the robot is used for controlling the cutting track of the water jet cutter, and meanwhile the flushing spray head moves along with the cutting track of the water jet cutter to flush the cutting part; longitudinal traveling rails are arranged in the protective fence frames on the two sides of the robot correspondingly, and the traveling rails are fixed to the ground and extend out of the entrances and exits of the protective fence frames. A carrying trolley is arranged on the travelling crane rail, and a workpiece clamping table is fixedly connected to the carrying trolley. According to the high-pressure water cutting device, the robot is adopted to control the water jet to operate, cutting is convenient, and precision is high; and a corresponding universal die casting clamping table which is convenient and stable in clamping is designed.

Description

Technical field:

[0001] The invention relates to the technical field of water cutting devices, and more particularly to a high-pressure water cutting device for removing runners from magnesium alloy die castings. Background technology:

[0002] At present, waterjet cutting technology uses a supercharger to pressurize water to extremely high pressure, usually reaching hundreds of MPa or even higher. High-pressure water is ejected from a very small nozzle (waterjet) to form a high-speed water stream. Abrasives, such as garnet, can be added to the water as needed to enhance the cutting ability. This high-speed water stream or water stream containing abrasives can cut a variety of materials. Its principle is mainly to use the kinetic energy of the water stream to destroy the molecular structure of the material.

[0003] For large integrated magnesium alloy die-castings, traditional cutting methods may not be able to guarantee accuracy and efficiency. High-pressure water cutting can remove the runner at extremely high speed and accuracy to ensure that the main body of the casting is not damaged. Its cutting accuracy can reach the millimeter level, which can meet the strict requirements of large die-castings for dimensional accuracy. High-pressure water cutting can accurately plan the cutting path according to the shape and position of the runner to avoid unnecessary damage to the casting body. At the same time, since no heat-affected zone is generated during the cutting process, it will not affect the performance and quality of magnesium alloy die-castings. High-pressure water cutting can be applied to the removal of runners of various shapes and sizes, whether it is a straight, curved or complex shape runner, it can be easily handled. For large integrated magnesium alloy die-castings, the shape of the runner is often complex, and traditional cutting methods may be difficult to cope with, while high-pressure water cutting can give full play to its advantages; therefore, a water-water cutting device for large integrated magnesium alloy die-castings is needed;

[0004] Moreover, the current integrated magnesium alloy die-casting has a relatively complex structure, with many structural surfaces on its upper and lower surfaces, and different magnesium alloy die-castings have different shapes and structures. Therefore, a clamping structure that is convenient for clamping needs to be designed in the water jet cutting device, and the clamping must be stable and will not interfere with the trajectory of the water jet cutting. Summary of the invention:

[0005] The purpose of the present invention is to address the deficiencies of the prior art and to provide a high-pressure water cutting device for removing runners from magnesium alloy die castings. The high-pressure water cutting device uses a robot to control the operation of the water jet, and the cutting is convenient and has high precision. A universal die casting clamping table is designed that is convenient and stable for clamping.

[0006] A high-pressure water cutting device for removing runners from magnesium alloy die-castings includes a "C"-shaped protective fence frame. There is an inlet and outlet on the front side of the protective fence frame. A rectangular ring-shaped drainage ditch is formed on the ground inside the protective fence frame. In the middle of the ground inside the drainage ditch, there is a robot. At the ends of the robotic arms on the robot, a water jet and a flushing nozzle are respectively installed and connected. Longitudinal traveling tracks are respectively arranged inside the protective fence frame on both sides of the robot. The traveling tracks are fixed on the ground and extend out of the inlet and outlet of the protective fence frame. A carrier cart is arranged on the traveling track, and a workpiece clamping table is fixedly connected to the carrier cart.

[0007] The workpiece clamping table includes a rectangular bottom plate. A rectangular positioning frame is fixedly connected to the bottom plate. A rectangular lifting frame is sleeved on the upper part of the positioning frame. On the left and right side walls at the upper end of the lifting frame, support plates are respectively formed. A number of longitudinally distributed pressing arms are arranged on the support plates. Pressing execution mechanisms are respectively arranged on the left and right sides of the lifting frame. The pressing execution mechanism includes a number of vertical pressing cylinders. The pressing cylinders are fixedly connected to the positioning side plates. The piston rods of the pressing cylinders pass through the positioning side plates and are respectively fixedly connected to the support plates of the lifting frame. The positioning side plates are respectively fixedly connected to the outer side walls on the left and right sides of the positioning frame.

[0008] A number of array-distributed support column assemblies are arranged inside the positioning frame. The support column assembly includes a vertical and cylindrical ejector post. A vertical positioning post is inserted at the lower end of the ejector post. A guide post sleeve with a D-shaped cross-section is inserted at the lower end of the positioning post. The lower end of the guide post sleeve is fixedly connected to the bottom plate. A vertical guide groove is formed on the outer wall on one side of the plane of the guide post sleeve. A horizontal stud is formed at the lower end of the positioning post. The stud passes through the guide groove of the guide post sleeve and is screwed with an inclined connecting rod. The upper end of the connecting rod is inserted with a T-shaped pin shaft. The pin shaft is inserted and fixed in a horizontally longitudinal linkage rod. A number of vertical avoidance grooves are formed on the front end face of the positioning frame. The front end of the linkage rod extends out of the avoidance groove of the positioning frame and is inserted and fixed with a cross shaft. A number of locking assemblies opposite to the cross shaft are fixedly connected to the front end face of the positioning frame. A repulsive upper magnet block and a lower magnet block are inserted inside the guide post sleeve. The lower magnet block abuts against the bottom plate, and the upper magnet block is fixedly connected to the lower end face of the positioning post.

[0009] The locking assembly includes a "C"-shaped locking seat sleeved on the cross shaft. A locking plate is inserted inside the locking seat on the front side of the cross shaft. Longitudinal guide rods are inserted at the upper and lower ends of the locking plate. The guide rods are inserted in the locking seat. A longitudinal locking bolt is screwed in the middle of the locking seat. The end of the locking bolt abuts against the locking plate.

[0010] A high-pressure water cutting device for removing runners from magnesium alloy die-castings according to the claim, characterized in that partitions are respectively fixedly connected to the ground on the front and rear sides of the robot, and gate rails are respectively arranged inside the inlets and outlets of the protective fence frame on both sides of the partitions.

[0011] Preferably, a plurality of longitudinal mounting slots are formed on both sides of the base plate, screws are inserted into the mounting slots, and the base plate is fixed to the transport trolley by the screws.

[0012] Preferably, the outer side walls on each side of the positioning frame are flush with the inner side walls of the lifting frame, and drainage grooves penetrating the lower end surface of the positioning frame are formed on the outer side walls on the left and right sides of the positioning frame.

[0013] Preferably, the press-fitting arm comprises a horizontal arm rod, one end of which is plugged with a positioning bolt, which is screwed to the support plate, and the other end of the arm rod is located directly above the positioning frame and is screwed with a vertical holding bolt.

[0014] Preferably, the front end of the connecting rod on the support column assembly is higher than the lower end of the connecting rod, and the stud is screwed to the lower end of the connecting rod;

[0015] The lower end surface of the ejecting column is formed with an insertion hole opposite to the positioning column, and the length of the ejecting column is not less than the length of the positioning column.

[0016] Preferably, a horizontal rectangular auxiliary plate is inserted in the middle and upper parts of the positioning frame, a plurality of positioning holes are arranged in an array on the auxiliary plate, and the ejector columns are respectively inserted in the positioning holes, and a rectangular ring-shaped baffle frame is fixedly connected to the lower end surface of the auxiliary plate, and the baffle frame is fixedly connected to the inner side wall of the positioning frame;

[0017] The auxiliary plate is provided with a plurality of vertical limiting columns.

[0018] Preferably, the upper end of the limiting column is located at the lower side of the upper end of the ejecting column, and the lower end of the limiting column is screwed on the auxiliary plate.

[0019] The beneficial effects of the present invention are:

[0020] The high-pressure water cutting device adopts a robot to control the operation of the water jet, and the cutting is convenient and high-precision; and a universal die-casting clamping table is designed for convenient and stable clamping. Description of the drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the present invention from a top view;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the workpiece clamping platform in the present invention;

[0023] Figure 3 It is a front view structural schematic diagram of the workpiece clamping platform of the present invention;

[0024] Figure 4 for Figure 3 The schematic diagram of the cross-sectional structure at A-A in the middle;

[0025] Figure 5 for Figure 3Schematic cross-sectional structure view at B-B in the middle;

[0026] Figure 6 This is a schematic side view structure of the workpiece clamping table inside the present invention.

[0027] In the figure: 1, protective fence frame; 2, drainage ditch; 3, robot; 4, water jet cutter; 5, flushing nozzle; 6, traveling crane track; 7, carrier cart; 8, workpiece clamping table; 9, barrier railing; 10, partition board. Specific implementation manner:

[0028] Example: As shown in Figures 1 to 6 A high-pressure water cutting device for removing the runner of a magnesium alloy die-casting includes a "C"-shaped protective fence frame 1. There is an inlet and outlet on the front side of the protective fence frame 1. A rectangular ring-shaped drainage ditch 2 is formed on the ground inside the protective fence frame 1. A robot 3 is arranged in the middle of the ground inside the drainage ditch 2. A water jet cutter 4 and a flushing nozzle 5 are respectively installed and connected to the ends of the robotic arm on the robot 3. The robot 3 controls the cutting trajectory of the water jet cutter 4, and at the same time, the flushing nozzle 5 moves along the cutting trajectory of the water jet cutter 4 to flush the cutting part; Longitudinal traveling crane tracks 6 are respectively arranged inside the protective fence frame 1 on both sides of the robot 3. The traveling crane tracks 6 are fixed on the ground and extend out of the inlet and outlet of the protective fence frame 1; A carrier cart 7 is arranged on the traveling crane track 6, and a workpiece clamping table 8 is fixedly connected to the carrier cart 7;

[0029] The workpiece clamping table 8 includes a rectangular bottom plate 81. A rectangular positioning frame 82 is fixedly connected to the bottom plate 81. A rectangular lifting frame 83 is sleeved on the upper part of the positioning frame 82. Support plates 831 are respectively formed on the left and right side walls at the upper end of the lifting frame 83. A number of longitudinally distributed pressing arms 84 are arranged on the support plates 831. Pressing execution mechanisms 85 are respectively arranged on the left and right sides of the lifting frame 83. The pressing execution mechanism 85 includes a number of vertical pressing cylinders 851. The pressing cylinders 851 are fixedly connected to the positioning side plates 852. The piston rods of the pressing cylinders 851 pass through the positioning side plates 852 and are respectively fixedly connected to the support plates 831 of the lifting frame 83. The positioning side plates 852 are respectively fixedly connected to the outer side walls on the left and right sides of the positioning frame 82;

[0030] The positioning frame 82 is provided with a number of support column assemblies 86 distributed in an array. The support column assembly 86 includes a vertically arranged and cylindrical blanking column 861. A vertical positioning column 862 is inserted at the lower end of the blanking column 861. A guide column sleeve 863 with a D-shaped cross-section is inserted at the lower end of the positioning column 862. The lower end of the guide column sleeve 861 is fixedly connected to the bottom plate 81. A vertical guide groove 8631 is formed on the outer wall of one side of the plane of the guide column sleeve 863. A horizontal stud 8621 is formed at the lower end of the positioning column 862. The stud 8621 passes through the guide groove 8631 of the guide column sleeve 863 and is screwed with an inclined connecting rod 864. The upper end of the connecting rod 864 is inserted with a T-shaped pin shaft 865. The pin shaft 865 is inserted and fixed in a horizontally longitudinal linkage rod 866. A number of vertical avoidance grooves 822 are formed on the front end face of the positioning frame 82. The front end of the linkage rod 866 extends out of the avoidance groove 822 of the positioning frame 82 and is inserted and fixed with a cross shaft 867. A number of locking assemblies 88 opposite to the cross shaft 867 are fixedly connected to the front end face of the positioning frame 82. A repulsive upper magnet block 868 and a lower magnet block 869 are inserted in the guide column sleeve 863. The lower magnet block 869 abuts against the bottom plate 81. The upper magnet block 868 is fixedly connected to the lower end face of the positioning column 862. Both the lower magnet block 869 and the upper magnet block 868 are made of strong magnets, such as neodymium iron boron magnets.

[0031] The locking assembly 88 includes a locking seat 881 sleeved on the cross shaft 867 and in a "C" shape. A locking plate 882 is inserted in the locking seat 881 on the front side of the cross shaft 867. Longitudinal guide rods 883 are inserted at the upper and lower ends of the locking plate 882. The guide rods 883 are inserted in the locking seat 881. A longitudinal locking bolt 884 is screwed in the middle of the locking seat 881. The end of the locking bolt 884 abuts against the locking plate 882. The locking bolt 884 will drive the locking plate 882 to move backward. Further, the locking plate 882 will drive the cross shaft 867 and the linkage rod 866 to move backward, realizing the rotation of the connecting rod 864. The rotation of the connecting rod 864 will clamp and fix on the guide column sleeve 863, realizing the positioning of the positioning column 862.

[0032] Partition plates 10 are fixedly connected to the ground on the front and rear sides of the robot 3 respectively. The height of the partition plates 10 is equal to the height of the robotic arm on the robot 3, while the protective fence frame 1 needs to be higher than the height of the robotic arm on the robot 3.

[0033] Barrier gates 9 are respectively arranged at the entrances and exits of the protective fence frame 1 on both sides of the partition plate 10. When the carrier trolley 7 enters and exits the protective fence frame 1, the barrier gates 9 can be opened, but prevent personnel from entering the protective fence frame 1. Robotic arm

[0034] A plurality of longitudinal mounting slots 811 are formed on both sides of the base plate 81, and screws are inserted into the mounting slots 811. The base plate 81 is fixed to the carrying trolley 7 by screws. The carrying trolley 7 can automatically move along the travel track 6, but the movement stroke is set, that is, the positions of the carrying trolley 7 at the front and rear ends of the travel track 6 are fixed.

[0035] The outer walls on each side of the positioning frame 82 are flush with the inner walls of the lifting frame 83 respectively. The outer walls on the left and right sides of the positioning frame 82 are formed with drainage grooves 821 that penetrate the lower end surface of the positioning frame 82. The chips and water generated by cutting can be discharged from the drainage grooves 821.

[0036] The press-fitting arm 84 includes a horizontal arm rod 841, one end of which is inserted with a positioning bolt 842, which is screwed to the support plate 831, and the other end of the arm rod 841 is located directly above the positioning frame 82 and is screwed with a vertical holding bolt 843, so that the arm rod 841 can rotate. At the same time, because the upper surface of the die-cast workpiece is not a plane, the holding bolt 843 can adjust the height of the holding point.

[0037] The front end of the connecting rod 864 on the support column assembly 86 is higher than the lower end of the connecting rod 864, and the stud 8621 is screwed to the lower end of the connecting rod 864;

[0038] The lower end surface of the ejecting column 861 is formed with an insertion hole opposite to the positioning column 862 . The length of the ejecting column 861 is not less than the length of the positioning column 862 , and the ejecting column 861 can be pulled off from the positioning column 862 .

[0039] A horizontal rectangular auxiliary plate 89 is inserted in the middle and upper part of the positioning frame 82. A plurality of positioning holes 891 are arranged in an array on the auxiliary plate 89. The ejector posts 861 are respectively inserted in the positioning holes 891. A rectangular ring-shaped baffle 810 is fixedly connected to the lower end surface of the auxiliary plate 89. The baffle 810 is fixedly connected to the inner side wall of the positioning frame 82. The auxiliary plate 89 can constrain the ejector posts 861 to reduce the occurrence of bending of the ejector posts 861.

[0040] The auxiliary plate 89 is provided with a plurality of vertical limit posts 87, which are used to limit the downward movement height of the die-casting workpiece.

[0041] The upper end of the limiting column 87 is located at the lower side of the upper end of the ejecting column 861, and the lower end of the limiting column 87 is screwed on the auxiliary plate 89. The limiting column 87 can be removed from the auxiliary plate 89 to avoid interfering with the cutting trajectory of the water jet high-pressure water jet.

[0042] Working principle: This structure is a high-pressure water cutting device for magnesium alloy die castings to remove runners. The high-pressure water cutting device has two innovative features;

[0043] One innovation is that the water jet 4 is installed on the robot 3, and two cutting stations are arranged on both sides of the robot 3. The robot 3 can realize independent cutting at the two cutting stations, which can improve the efficiency of water jet cutting; and safe and reliable protection measures are arranged in the cutting stations;

[0044] Another innovative point is the workpiece clamping table 8 for loading the large integrated magnesium alloy die-casting. The large integrated magnesium alloy die-casting is first placed in the support column assembly 86 in the positioning frame 82, the corresponding position of the press-fitting arm 84 is adjusted, and the press-fitting cylinder 851 is started to adjust the press-fitting arm 84 to move downward to press the large integrated magnesium alloy die-casting. At the same time, the ejecting column 861 on the support column assembly 86 elastically supports the lower surface of the large integrated magnesium alloy die-casting; then, the locking assembly 88 is adjusted to clamp and fix the connecting rod 864 in the support column assembly 86 on the guide column sleeve 863, so that the elastic support of the ejecting column 861 is changed to a fixed support;

[0045] Then the press cylinder 851 is reset, the large integrated magnesium alloy die-casting is taken out from the positioning frame 82, and the ejector column 861 that overlaps or interferes with the water jet cutting trajectory is pulled out to prevent the ejector column 861 from being damaged by water jet cutting; then the large integrated magnesium alloy die-casting is clamped; at the same time, the positioning and clamping of the next large integrated magnesium alloy die-casting of the same specification can be quickly completed.

[0046] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore, the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A high-pressure water cutting device for removing runners from magnesium alloy die-castings, comprising a "C"-shaped protective fence frame (1) with an inlet and an outlet provided on the front side of the protective fence frame (1), and a rectangular ring-shaped drainage ditch (2) formed on the ground inside the protective fence frame (1), characterized in that: A robot (3) is arranged in the middle of the ground inside the drainage ditch (2), and the ends of the mechanical arms on the robot (3) are respectively connected to water jets (4) and flushing nozzles (5), and longitudinal driving tracks (6) are respectively arranged in the guardrail frames (1) on both sides of the robot (3), and the driving tracks (6) are fixed on the ground and extend out of the inlet and outlet of the guardrail frames (1); a transport trolley (7) is arranged on the driving track (6), and a workpiece clamping platform (8) is fixedly connected to the transport trolley (7); The workpiece clamping platform (8) comprises a rectangular bottom plate (81), a rectangular positioning frame (82) is fixedly connected to the bottom plate (81), a rectangular lifting frame (83) is sleeved on the upper part of the positioning frame (82), support plates (831) are respectively formed on the left and right side walls of the upper end of the lifting frame (83), a plurality of longitudinally distributed press-fitting arms (84) are arranged on the support plates (831), and press-fitting actuators (85) are respectively arranged on the left and right sides of the lifting frame (83), and the press-fitting actuators (85) comprise a plurality of vertical press-fitting cylinders (851), the press-fitting cylinders (851) are fixedly connected to the positioning side plates (852), piston rods of the press-fitting cylinders (851) pass through the positioning side plates (852) and are respectively fixedly connected to the support plates (831) of the lifting frame (83), and the positioning side plates (852) are respectively fixedly connected to the outer side walls of the left and right sides of the positioning frame (82); The positioning frame (82) is provided with a plurality of support column assemblies (86) distributed in an array, and the support column assembly (86) includes a vertical and cylindrical ejecting column (861), the lower end of the ejecting column (861) is plugged with a vertical positioning column (862), the lower end of the positioning column (862) is plugged with a guide column sleeve (863) with a D-shaped cross-section, the lower end of the guide column sleeve (861) is fixedly connected to the bottom plate (81), and a vertical guide groove (8631) is formed on the outer wall of one side of the plane of the guide column sleeve (863), and a horizontal stud (8621) is formed on the lower end of the positioning column (862), and the stud (8621) passes through the guide groove (8631) of the guide column sleeve (863) and is screwed with an inclined connecting rod (864), and the connecting rod The upper end of the (864) is plugged with a T-shaped pin shaft (865), and the pin shaft (865) is plugged and fixed on the horizontal longitudinal linkage rod (866); the front end surface of the positioning frame (82) is formed with a plurality of vertical avoidance grooves (822), the front end of the linkage rod (866) protrudes from the avoidance groove (822) of the positioning frame (82) and is plugged and fixed with a transverse axis (867), and the front end surface of the positioning frame (82) is fixedly connected with a plurality of locking components (88) opposite to the transverse axis (867); the guide column sleeve (863) is inserted with an upper magnet block (868) and a lower magnet block (869) that repel each other, the lower magnet block (869) abuts against the bottom plate (81), and the upper magnet block (868) is fixedly connected to the lower end surface of the positioning column (862); The locking component (88) includes a locking seat (881) sleeved on the horizontal shaft (867) and in a "C" shape. A locking plate (882) is inserted into the locking seat (881) on the front side of the horizontal shaft (867). Vertical guide rods (883) are inserted into the upper and lower ends of the locking plate (882). The guide rods (883) are inserted into the locking seat (881). A vertical locking bolt (884) is screwed in the middle of the locking seat (881), and the end of the locking bolt (884) abuts against the locking plate (882).

2. A high-pressure water jet cutting device for removing runners from magnesium alloy die castings according to claim 1, characterized in that: Partition plates (10) are fixedly connected to the ground on the front and rear sides of the robot (3) respectively. Gate bars (9) are respectively arranged at the entrances and exits of the guardrail frames (1) on both sides of the partition plates (10).

3. The high-pressure water jetting device for removing runners from magnesium alloy die castings according to claim 1, characterized in that: A number of longitudinal mounting slots (811) are formed on both sides of the bottom plate (81). Screws are inserted into the mounting slots (811), and the bottom plate (81) is fixedly connected to the carrier trolley (7) by the screws.

4. A high-pressure water jet cutting device for removing runners from magnesium alloy die castings according to claim 1, characterized in that: The outer side walls on each side of the positioning frame (82) are flush with the inner side walls of the lifting frame (83). Drainage grooves (821) penetrating the lower end surface of the positioning frame (82) are formed on the outer side walls on the left and right sides of the positioning frame (82).

5. The high-pressure water jet cutting device for removing runners of magnesium alloy die castings according to claim 1, characterized in that: The pressing arm (84) includes a horizontal arm rod (841). A positioning bolt (842) is inserted into one end of the arm rod (841). The positioning bolt (842) is screwed to the support plate (831). The other end of the arm rod (841) is located directly above the positioning frame (82) and a vertical pressing bolt (843) is screwed thereon.

6. The high-pressure water jet cutting device for removing runners of magnesium alloy die castings according to claim 1, characterized in that: The front end of the upper connecting rod (864) of the support column assembly (86) is higher than the lower end of the connecting rod (864). The stud (8621) is screwed to the lower end of the connecting rod (864). A jack opposite to the positioning column (862) is formed on the lower end surface of the ejector post (861). The length of the ejector post (861) is not less than the length of the positioning column (862).

7. The high-pressure water jet cutting device for removing runners of magnesium alloy die castings according to claim 1, characterized in that: A horizontal rectangular auxiliary plate (89) is inserted into the middle and upper parts of the positioning frame (82). A number of positioning holes (891) are arranged in an array on the auxiliary plate (89). The ejector posts (861) are respectively inserted into the positioning holes (891). A rectangular ring-shaped retaining frame (810) is fixedly connected to the lower end surface of the auxiliary plate (89), and the retaining frame (810) is fixedly connected to the inner side wall of the positioning frame (82). A number of vertical limiting posts (87) are arranged on the auxiliary plate (89).

8. The high-pressure water jet cutting device for removing runners of magnesium alloy die castings according to claim 7, characterized in that: The upper end of the limiting post (87) is located below the upper end of the ejector post (861), and the lower end of the limiting post (87) is screwed to the auxiliary plate (89).

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