An automated sheet metal bending machine and method of use thereof

Abstract

The present application belongs to the technical field of metal piece processing, and particularly relates to an automatic plate bending machine, which comprises: a machine body, a lower die mounting table arranged on the front side of the machine body; an upper die mounting table arranged on the machine body and above the lower die mounting table, the upper die mounting table being vertically movable; a hydraulic system comprising a hydraulic pump and a hydraulic cylinder connected through an oil pipe; a control system comprising a control center arranged on the machine body; further comprising: a positioning mechanism arranged on the machine body and at the rear side of the lower die, the positioning mechanism comprising a sliding block capable of controlling the insertion depth of the plate; an upper die unit comprising a plurality of upper die pressing blocks detachably arranged on the upper die mounting table; and a lower die unit comprising a plurality of lower die pressing blocks detachably arranged on the lower die mounting table, the present application improving the bending precision of the plate relative to the prior art.

Description

Technical Field

[0001] This invention belongs to the field of metal parts processing technology, and in particular relates to an automated sheet metal bending machine and its usage method. Background Technology

[0002] A sheet metal bending machine is a device used for bending sheet metal. It typically consists of a machine body with an all-steel welded structure, a hydraulic system, a control system, and upper and lower dies. For example, a multi-functional hydraulic sheet metal bending machine disclosed in patent application number CN201921109306.5 includes a bending machine body. The lower end of the bending machine body is provided with casters. The upper outer surface of the casters is provided with a base. The upper outer surface of the base is provided with a worktable. The upper outer surface of the worktable is provided with a bending die. The upper outer surface of the bending die is provided with a left oil cylinder and a right oil cylinder. The left oil cylinder is located to one side of the right oil cylinder. An electrical system is provided on one outer surface of the bending machine body. The upper outer surface of the electrical system is provided with an equipment controller.

[0003] In the operation of this existing sheet metal bending machine, the positioning of the sheet metal and the movement distance of the upper and lower dies are all manually controlled by the operator, which is prone to human error and reduces the bending accuracy of the sheet metal. In addition, under long-term high-pressure operation, the hydraulic system is prone to loosening of oil pipe connections, oil leakage or pressure fluctuations, which further affects the bending accuracy of the sheet metal. At the same time, the efficiency of die replacement is low, which reduces work efficiency. Therefore, it is necessary to make improvements. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned technical problems by providing an automated sheet metal bending machine and its usage method, thereby effectively improving the bending accuracy of sheet metal and increasing work efficiency.

[0005] In view of this, the present invention provides an automated sheet metal bending machine, comprising:

[0006] The machine body has a lower mold mounting platform on its front side;

[0007] An upper mold mounting platform is provided on the machine body and located above the lower mold mounting platform. The upper mold mounting platform can be raised and lowered vertically.

[0008] The hydraulic system includes a hydraulic pump and a hydraulic cylinder connected by oil pipes;

[0009] A control system, comprising a control center mounted on the machine body;

[0010] Its characteristic is that it further includes:

[0011] A positioning mechanism is provided on the machine body and located on the rear side of the lower mold. The positioning mechanism includes a sliding stop that can control the insertion depth of the sheet metal.

[0012] Upper mold unit, the upper mold unit includes a plurality of upper mold pressing blocks that are detachably mounted on the upper mold mounting platform;

[0013] The lower mold unit includes several lower mold pressing blocks that are detachably mounted on the lower mold mounting platform;

[0014] The upper mold mounting platform is driven by a hydraulic cylinder to move vertically. Both the upper and lower mold pressing blocks are engraved with serial numbers composed of pressing block parameters. The control center has built-in stamping parameters that match the serial numbers. The control center automatically matches the parameters by inputting the serial numbers of the upper and lower mold pressing blocks to achieve automatic control of the upper and lower mold pressing blocks.

[0015] In this technical solution, the insertion depth of the sheet metal can be effectively controlled by the positioning mechanism, which facilitates automatic positioning of the sheet metal and improves the bending accuracy of the sheet metal. At the same time, by using the serial number composed of the pressure block parameters, the operator can directly input the serial number of the upper and lower die pressure blocks through the control center to automatically match the parameters, which further facilitates the automatic control of the moving distance of the upper and lower dies, reduces the occurrence of human error, and improves the bending accuracy of the sheet metal.

[0016] In the above technical solution, the positioning mechanism further includes:

[0017] A support frame is mounted on the machine body and located on the rear side of the lower mold;

[0018] The sliding block is slidably connected to the support frame in the lateral direction of the lower mold mounting platform, and the moving distance of the sliding block can be controlled by the control system.

[0019] In the above technical solution, the hydraulic system further includes:

[0020] A tubing connector, which is located at the connection end of a tubing and is used to connect adjacent tubing;

[0021] The oil pipe connector can be used with the oil pipe to form multiple seals.

[0022] In the above technical solution, the oil pipe connector further includes:

[0023] The main connector has a slot for inserting the end of the oil pipe and a tube for inserting into the oil pipe. The slot has a sealing part that can form a sealing fit with the end face of the oil pipe.

[0024] Pipe clamp, wherein the pipe clamp is provided on the portion of the oil pipe into which the pipe is inserted;

[0025] A reinforcing sleeve is formed by two half-cylinders wrapped around the outside of the main connector. The inner wall of the reinforcing sleeve has a convex ring that can close the slot and press the oil pipe. The end of the reinforcing sleeve has a self-tightening ring.

[0026] The self-tightening ring, through its wedge-shaped structure, presses the oil pipe tightly onto the insertion tube when the oil pipe comes loose, thus preventing the oil pipe from coming loose.

[0027] In the above technical solution, the upper mold unit further includes:

[0028] A connecting plate is fixedly installed at the bottom of the upper mold mounting platform, and the connecting plate has several insertion holes for the upper mold pressing block to be installed and connected.

[0029] A fixing part, which is located in the insertion hole and fixedly connected to the upper mold mounting table, includes a plurality of grippers that are hydraulically driven to move.

[0030] A connecting post is provided on the top of the upper molding block, and the top of the connecting post is provided with a connecting block that cooperates with several grippers;

[0031] The upper mold pressing block is fixed on the upper mold mounting platform by several grippers after the connecting column is inserted into the insertion hole.

[0032] Furthermore, the above technical solution also includes:

[0033] The slow-release section includes a pressure roller and a damping element that is unidirectionally connected to the pressure roller;

[0034] The connecting column can drive the pressure roller to rotate and transmit force to the slow-release part after the gripper releases the connecting block. The slow-release part can control the rotation speed of the pressure roller in the opposite direction through gas micropore damping so that the connecting column descends slowly.

[0035] In the above technical solution, the fixing part further includes:

[0036] Mounting base, the mounting base having a hydraulic drive component, and a center plate at the bottom of the mounting base;

[0037] A linkage mechanism, wherein the connecting mechanism is provided with several corresponding grippers and is evenly spaced along the circumference of the central plate;

[0038] The center plate can be raised and lowered under the drive of a hydraulic drive component. The gripper is connected to the connecting mechanism. During the raising and lowering process, the center plate can drive the connecting mechanism to move. The gripper expands or contracts with the movement of the linkage mechanism.

[0039] In the above technical solution, the connecting block further includes:

[0040] The fixing groove has several grooves that are evenly spaced along the circumference of the connecting block on the side wall of the connecting block, and the fixing groove is triangular with a wide bottom and a narrow top.

[0041] In the above technical solution, the damping element further includes:

[0042] A damping disc, wherein the damping disc has an arc-shaped piston cavity concentric with the damping disc;

[0043] A piston body, wherein the piston body is disposed in an arc-shaped piston cavity;

[0044] The piston rod is rotatably mounted in the damping disc;

[0045] The piston rod is connected to the pressure roller via a shaft so that it drives the piston body to move in the piston chamber as the pressure roller rotates. The piston chamber is connected to the external environment through a gas damping micropore. The piston body can automatically reset after moving.

[0046] Furthermore, in the above technical solution, the present invention also discloses a method of using the above-mentioned automated sheet metal bending machine, comprising the following steps:

[0047] S1 parameter setting: Before bending the sheet metal, input the corresponding parameters through the control center according to the bending requirements of the sheet metal and the specifications of the upper and lower mold units.

[0048] S2 Sheet Insertion: Insert the sheet into the lower die unit. The sliding stop of the positioning mechanism blocks the insertion end of the sheet after insertion, controlling the insertion depth of the sheet.

[0049] S3 The sheet metal is bent. The hydraulic pump in the hydraulic system is started. The hydraulic pump drives the hydraulic cylinder to work. The upper mold mounting table is lowered under the drive of the hydraulic cylinder, so that the upper mold pressure block on the upper mold unit is close to the lower mold pressure block on the lower mold unit, and finally the sheet metal is bent.

[0050] S4 Replace the upper mold block. Control the hydraulic action of the fixing part to release the connecting block. After the connecting block is released, the connecting column descends under the gravity of the upper mold block. The release part uses the pressure roller to control the release speed of the connecting column. Then, the released upper mold block is replaced. The connecting column of the replaced upper mold block is inserted into the socket. Finally, the gripper of the fixing part grips the connecting block on the connecting column to complete the fixing of the upper mold block.

[0051] In this technical solution, the automated sheet metal bending machine has a high degree of automation in the positioning of the sheet metal and the movement distance of the upper and lower dies during the processing, which effectively improves the bending accuracy of the sheet metal. At the same time, when replacing the upper die pressure block of different specifications and sizes, the replacement steps are simple, which effectively improves the work efficiency.

[0052] The beneficial effects of this invention are:

[0053] 1. By matching the positioning mechanism and serial number with the built-in stamping parameters in the control center, the automation level of the sheet metal bending machine can be effectively improved, the error of human operation can be reduced, and the bending accuracy of the sheet metal can be improved.

[0054] 2. The use of oil pipe connectors can improve the stability of the hydraulic system, reduce oil leakage at the connection points, ensure stable hydraulic system pressure, and prevent a decrease in accuracy due to hydraulic pressure fluctuations during sheet metal bending operations.

[0055] 3. The upper mold block can be quickly replaced and installed by the cooperation of the fixing part and the connector, which effectively improves work efficiency. At the same time, the fixing part has a good fixing effect on the upper mold block.

[0056] 4. With the addition of a slow-release section, the upper mold block will not fall directly when it is released during the replacement process, but will be released slowly, which makes it easier for staff to perform the replacement operation individually and further improves work efficiency. Attached Figure Description

[0057] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 This is a schematic diagram of a specific embodiment of the present invention.

[0059] Figure 2 This is a schematic diagram of the positioning mechanism of the present invention.

[0060] Figure 3 This is a schematic cross-sectional view of the oil pipe connector of the present invention.

[0061] Figure 4 This is a schematic diagram of the oil pipe connector structure of the present invention.

[0062] Figure 5 This is a schematic diagram of the self-tightening ring structure of the present invention.

[0063] Figure 6This is a schematic diagram of the upper mold unit structure of the present invention.

[0064] Figure 7 This is a schematic diagram of the connection block and gripper in the working state of the present invention.

[0065] Figure 8 This is a schematic diagram of the fixing part structure of the present invention.

[0066] Figure 9 This is a schematic diagram of the linkage mechanism of the present invention.

[0067] Figure 10 This is a schematic diagram of the sustained-release portion of the present invention.

[0068] Figure 11 This is a schematic diagram of the damping component structure of the present invention.

[0069] The markings in the diagram are as follows:

[0070] 1. Machine body; 2. Lower mold mounting platform; 3. Upper mold mounting platform; 4. Hydraulic pump; 5. Hydraulic cylinder; 6. Control center; 7. Positioning mechanism; 70. Sliding stop; 71. Support frame; 8. Upper mold unit; 80. Upper mold pressure block; 81. Connecting platform; 82. Insertion hole; 83. Fixing part; 830. Grab; 831. Mounting base; 832. Hydraulic drive component; 833. Center plate; 834. Linkage mechanism; 8340. First link seat; 8341. Second link seat; 8342. First link; 8343. Second link; 8344. Third link; 8345. Fourth link; 84. Connecting column; 85. 850. Connecting block; 9. Fixing groove; 10. Lower mold unit; 11. Lower mold pressure block; 12. Oil pipe connector; 13. Main connector; 14. Slot; 15. Insert pipe; 16. Sealing part; 17. Pipe clamp; 18. Reinforcing sleeve; 19. Convex ring; 100. Self-tightening ring; 101. Wedge groove; 102. Wedge block; 11. Slow-release part; 12. Pressure roller; 13. Damping element; 14. Damping disc; 15. Arc-shaped piston cavity; 16. Piston body; 17. Piston rod; 18. Guide rod; 19. Shaft seat; 100. Wheel axle; 111. Intermediate shaft; 12. End shaft; 13. Elastic element. Detailed Implementation

[0071] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0072] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0073] Example 1:

[0074] This application provides an automated sheet metal bending machine, comprising: a machine body 1, a lower mold mounting platform 2 disposed on the front side of the machine body 1; an upper mold mounting platform 3 disposed on the machine body 1 and located above the lower mold mounting platform 2, the upper mold mounting platform 3 being movable vertically; a hydraulic system, the hydraulic system including a hydraulic pump 4 and a hydraulic cylinder 5 connected by oil pipes; and a control system, the control system including a control center 6 disposed on the machine body 1.

[0075] It also includes: a positioning mechanism 7, which is disposed on the machine body 1 and located on the rear side of the lower mold, the positioning mechanism 7 including a sliding stop 70 that can control the insertion depth of the sheet metal; an upper mold unit 8, which includes several upper mold pressing blocks 80 that are detachably disposed on the upper mold mounting table 3; and a lower mold unit 9, which includes several lower mold pressing blocks 90 that are detachably disposed on the lower mold mounting table 2.

[0076] The upper mold mounting platform 3 is driven by a hydraulic cylinder 5 to move vertically. The upper mold pressing block 80 and the lower mold pressing block 90 are engraved with serial numbers composed of pressing block parameters. The control center 6 has built-in stamping parameters that match the serial numbers. The control center 6 automatically matches the parameters by inputting the serial numbers of the upper mold pressing block 80 and the lower mold pressing block 90 to realize the automatic control of the upper mold pressing block 80 and the lower mold pressing block 90.

[0077] The positioning mechanism 7 also includes a support frame 71, which is mounted on the machine body 1 and located on the rear side of the lower mold;

[0078] The sliding block 70 is slidably connected to the support frame 71 in the lateral direction of the lower mold mounting platform 2, and the moving distance of the sliding block 70 can be controlled by the control system.

[0079] Moreover, the machine body 1 has a conventional structure and is arranged upright on the bottom surface of the production site. The lower die pressing block 90 has a groove formed in it. The groove is located on the upper part of the lower die pressing block 90 and has a certain depth to form a bending groove for bending the sheet metal. Several lower die pressing blocks 90 are arranged in a row along the longitudinal direction of the lower die mounting platform, that is, the left and right direction of the machine body 1. The number of lower die pressing blocks 90 can be adjusted according to the size of the sheet metal. The serial number engraved on the lower die pressing block 90 is composed of parameters such as the groove angle and the chamfer radius of the groove entrance corner.

[0080] The lower mold pressing block 90 and the lower mold mounting platform 2 can be detachably connected using a conventional quick-release method. Preferably, the top of the lower mold mounting platform has several mounting grooves along the longitudinal direction. The mounting grooves are quadrilateral. The bottom of the lower mold pressing block 90 has mounting blocks corresponding to the mounting grooves. The mounting blocks and mounting grooves are precisely fitted with a tolerance grade of IT2 to IT5. The side wall of the lower mold mounting platform 2 has pin holes that penetrate the lower mold mounting platform 2 and the mounting grooves laterally. Similarly, the mounting blocks also have corresponding pin holes and pin shafts that mate with the pin holes.

[0081] The end of the upper die block 80 has a conventional shape that is bent at a certain angle. The serial number engraved on the upper die block 80 is composed of parameters such as the bending angle of its end and the forming angle of its bottom.

[0082] The hydraulic system also has conventional control valves such as solenoid valves, as well as auxiliary components such as oil tanks and oil filters. Conventionally, there are two hydraulic cylinders 5, which are symmetrically arranged on both sides of the machine body 1 in the left-right direction. The hydraulic cylinders 5 are fixed to the machine body 1 by conventional bolts. The hydraulic cylinders 5 are driven by the hydraulic pump 4. The upper mold mounting platform 3 is movably connected to the machine body 1 in a conventional way, such as by a moving rod, guide rail, or slider. The driving end of the hydraulic cylinder 5 is vertically downward and connected to the upper mold mounting platform 3. The hydraulic cylinder 5 applies hydraulic pressure through the hydraulic pump 4 to extend the driving end, thereby driving the upper mold mounting platform 3 to rise and fall.

[0083] The control system is a conventional control system. The control center 6 has multiple buttons for inputting working parameters, such as direction control buttons, digital buttons, mode buttons, and start / stop buttons. The control system can be a conventional CNC device.

[0084] The support frame 71 has a certain protruding height, and the sliding block 70 can move along the insertion direction of the sheet metal. The end of the sliding block 70 can contact the sheet metal and block it. The insertion depth of the sheet metal can be preset in the control center 6. The sliding block 70 moves according to the preset parameters. The sliding block 70 and the support frame 71 can be connected by a conventional sliding connection method, such as arranging guide rails and sliders on the support frame 71 and the sliding block 70 respectively, and arranging a conventional linear drive unit connected to the sliding block 70 on the support frame 71.

[0085] In this technical solution, the positioning mechanism 7 can effectively control the insertion depth of the sheet metal, facilitate automatic positioning of the sheet metal, and improve the bending accuracy of the sheet metal. At the same time, by using the serial number composed of the pressure block parameters, the operator can directly input the serial number of the upper mold pressure block 80 and the lower mold pressure block 90 through the control center 6 to automatically match the parameters, which further facilitates the automatic control of the moving distance of the upper and lower molds, reduces the occurrence of human error, and improves the bending accuracy of the sheet metal.

[0086] Example 2:

[0087] This embodiment provides an automated sheet metal bending machine. In addition to the technical solutions of the above embodiments, it also has the following technical features: the hydraulic system further includes an oil pipe connector 10, which is disposed at the connection end of the oil pipe for connecting adjacent oil pipes.

[0088] The oil pipe connector 10 can be used with the oil pipe to form multiple seals.

[0089] The tubing connector 10 further includes: a main connector 100, which has a slot 101 for inserting the end of the tubing and a insert 102 inserted into the tubing. The slot 101 has a sealing part 103 that can form a sealing fit with the end face of the tubing; a pipe clamp 104, which is clamped on the part of the tubing into which the insert 102 is inserted; and a reinforcing sleeve 105, which is formed by two half-cylinders wrapped around the outside of the main connector 100. The inner wall of the reinforcing sleeve 105 has a convex ring 106 that can close the slot 101 and press the tubing. The end of the reinforcing sleeve 105 has a self-tightening ring 107.

[0090] The self-tightening ring 107 uses a wedge-shaped structure to press the oil pipe onto the insertion tube 102 to prevent the oil pipe from coming loose.

[0091] Furthermore, the oil pipe connector 10 can be installed at all connection ends of the hydraulic system, such as the connection between the output end of the hydraulic pump 4 and the input end of the hydraulic cylinder 5. The pipe clamp 104 is a conventional oil pipe clamp. The main connector 100 is tubular. The outer diameter of the insert 102 matches the inner diameter of the oil pipe. The middle part of the insert 102 has a coaxial annular protrusion that protrudes outward from the insert 102. The outer diameter of the annular protrusion is larger than the outer diameter of the oil pipe. The slot 101 is formed in... An annular groove is formed on the end face of the annular protrusion. This annular groove is axially distributed, and its inner and outer diameters match the inner and outer diameters of the oil pipe, respectively. The sealing part 103 is also annular and arranged at the inner end of the annular groove. Both sides of the half-cylinder have conventional connecting lugs. The two half-cylinders are connected to each other by connecting lugs and bolts and nuts to form a reinforcing sleeve 105. The inner diameter of the half-cylinder matches the outer diameter of the annular protrusion in the middle of the insertion tube 102. The convex ring 106 protrudes into the insertion tube 102. The 6 has two symmetrically distributed protruding rings 106 on both sides of the half-cylinder, and the distance between the two protruding rings 106 matches the axial length of the annular protrusion. The inner diameter of the protruding ring 106 is slightly larger than the outer diameter of the oil pipe to press the protruding ring 106 tightly against the surface of the insertion tube 102. The two ends of the half-cylinder also have annular portions protruding towards the insertion tube 102, and the inner circumferential surface of the annular portion protruding at the end of the half-cylinder has annular grooves for installing self-tightening rings 107. The annular grooves are radially distributed, and the bottom surface of the annular grooves has annular grooves for installing self-tightening rings 107. A wedge-shaped groove 108 is arranged, which is a groove that is annular and has a wedge-shaped cross section. The self-tightening ring 107 has an annular main body, and the self-tightening ring 107 cooperates with the two semi-cylinders of the reinforcing sleeve 105, which are also composed of two semi-annular shapes. Several wedges 109 are distributed circumferentially on the side of the main body of the self-tightening ring 107. The main body of the self-tightening ring 107 and the bottom of the wedges 109 cooperate with the annular groove at the end of the semi-cylinder and are embedded in the annular groove, while the top of the wedges 109 cooperates with the wedge-shaped groove 108.

[0092] In this embodiment, when connecting adjacent oil pipes, the ends of the two oil pipes are respectively inserted into the inserts 102 at both ends of the main connector 100, and the ends of the oil pipes are inserted into the slots 101. After the ends of the oil pipes are inserted into the slots 101, they fit against the sealing part 103 to form an additional seal. Then, the oil pipes are tightly clamped onto the inserts 102 by the pipe clamps 104, and the main seal is formed by the tightening of the pipe clamps 104. After the oil pipes are fitted with the main connector 100, the reinforcing sleeve 105 is fitted onto the outside of the main connector 100 and the oil pipes. After the reinforcing sleeve 105 is fixed, the convex ring 106 further presses the oil pipes onto the inserts 102 to form an additional seal. At the same time, the convex ring 106 presses the slots 101... The side sealing and the self-tightening ring 107, after being fixed by the reinforcing sleeve 105, can fit tightly against the surface of the oil pipe. When the oil pipe becomes loose, the self-tightening ring 107 moves with the loosening trend of the oil pipe. Due to the wedge structure design, the self-tightening ring 107 cooperates with the wedge groove 108 at the end of the half cylinder. The more the self-tightening ring 107 moves outward, the greater the pressure on the surface of the oil pipe, thus increasing the resistance that needs to be overcome when the oil pipe is loosened, and finally achieving self-tightening to prevent the oil pipe from loosening. Compared with the prior art, the present invention can form multiple compression seals at the oil pipe connection, and the connection stability of the oil pipe is high, making it less prone to loosening. It reduces the phenomenon of pressure fluctuation in the hydraulic system and improves the bending accuracy of the sheet metal.

[0093] Example 3:

[0094] This embodiment provides an automated sheet metal bending machine. In addition to the technical solutions of the above embodiments, it also has the following technical features: the upper die unit 8 further includes: a connecting plate 81, which is fixedly disposed at the bottom of the upper die mounting platform. The connecting plate 81 has a plurality of insertion holes 82 for mounting and connecting the upper die pressure block 80; a fixing part 83, which is located in the insertion holes 82 and fixedly connected to the upper die mounting platform. The fixing part 83 includes a plurality of grippers 830 that are hydraulically driven to move; and a connecting column 84, which is disposed at the top of the upper die pressure block 80. The top of the connecting column 84 is provided with a connecting block 85 that cooperates with the plurality of grippers 830.

[0095] Among them, after the connecting post 84 is inserted into the insertion hole 82, the upper mold pressure block 80 is gripped by several grippers 830 and fixed on the upper mold mounting platform 3.

[0096] The fixing part 83 also includes: a mounting base 831, on which a hydraulic drive component 832 is provided, and a center plate 833 is located below the mounting base 831; a linkage mechanism 834, in which several connecting mechanisms are provided corresponding to the gripper 830 and are evenly distributed around the center plate 833.

[0097] The center plate 833 can be raised and lowered under the drive of the hydraulic drive component 832. The gripper 830 is connected to the connecting mechanism. During the raising and lowering process, the center plate 833 can drive the connecting mechanism to move. The gripper 830 can be expanded or contracted with the movement of the linkage mechanism 834.

[0098] The connecting block 85 also includes a fixing groove 850, which has a plurality of grooves and is evenly distributed along the circumference of the connecting block 85 on the side wall of the connecting block 85. The fixing groove 850 is a triangle with a wide bottom and a narrow top.

[0099] Furthermore, the connecting plate 81 is generally rectangular in shape. The connecting plate 81 is connected to the bottom of the upper mold mounting platform 3 by conventional bolts. Several insertion holes 82 are evenly spaced along the longitudinal direction of the upper mold mounting platform 3, and the insertion holes 82 are located directly above the lower mold mounting platform 2. The insertion holes 82 can be cylindrical holes. The connecting column 84 is cylindrical and matches the insertion hole 82. The outer diameter of the connecting column 84 matches the inner diameter of the insertion hole 82. The connecting block 85 can be an integral part of the connecting column 84. The connecting block 85 can also be a separately processed hollow block and fixedly matched with the top of the connecting column 84 by conventional bolts. The hydraulic drive of the fixing part 83 can be controlled by the hydraulic system and the control system.

[0100] Preferably, the gripper 830 has at least six grippers. The mounting base 831 can be fixedly connected to the bottom surface of the upper mold mounting platform 3 by conventional bolts. The hydraulic drive 832 can be a conventional hydraulic actuator such as a hydraulic cylinder 5. The linkage mechanism 834 includes a first linkage seat 8340 connected to the bottom surface of the mounting base 831, a second linkage seat 8341 connected to the side wall of the center plate 833, and also includes first, second, third, and fourth links. The first link 8342 is straight and one end is hinged to the first linkage seat 8340. The second link 8343 is V-shaped, and the other end of the first link 8342 is connected to the second link 8343. The top is hinged, the bottom side of the second link 8343 is parallel to the third link 8344, and the fourth link 4345 is parallel to the top of the gripper 830. The bottom side of the second link 8343, the third link 8344, the fourth link 4345 and the top of the gripper 830 form a parallelogram link structure. The bottom end of the fourth link 4345 is fixedly connected to the second link seat 8341. Preferably, the bottom end of the mounting seat 831 also has a number of guide rods 12. The number of guide rods 12 are evenly distributed around the circumference of the driving end of the hydraulic drive component 832. The center plate 833 and the guide rods 12 are in sliding fit.

[0101] Preferably, the bottom of the mounting base 831 also has a cover with several linkage mechanisms 834. The cover is fixedly connected to the mounting base 831. The bottom of the cover has a bottom cover with several slots for the bottom of the gripper 830 to pass through. The bottom cover can be detachably connected to the cover by conventional bolts. A push-button trigger switch can also be installed in the center of the bottom cover. The trigger switch is electrically connected to the control center 6.

[0102] Furthermore, preferably, the connecting block 85 is frustum-shaped, and the top width of the fixing groove 850 matches the size of the gripper 830. If the gripper 830 is a plate with a hook, the top width of the fixing groove 850 matches the thickness of the gripper 830.

[0103] In this embodiment, during the replacement and installation of the upper mold pressure block 80, the connecting post 84 is inserted into the insertion hole 82. Then, the fixing part 83 is controlled to operate, the hydraulic drive component 832 drives the center plate 833 to move, and the linkage mechanism 834 moves. Several grippers 830 gradually retract and enter the fixing groove 850. Finally, the grippers 830 grip the connecting block 85 through the fixing groove 850, thereby fixing the connecting post 84 in the insertion hole 82, realizing the installation and fixing of the upper mold pressure block 80. The fixing groove 850 is triangular, so that when replacing and installing the upper mold pressure block 80, the operator does not need to spend time and effort to make the upper mold pressure block 80 completely parallel to the longitudinal direction of the upper mold mounting table. During the gradual shrinkage process, 830 can automatically rotate the connecting block 85 to the aligned state by cooperating with the triangular shape of the fixing groove 850, thereby adjusting the position of the upper mold pressure block 80 to the aligned state. This facilitates the replacement and installation of the upper mold pressure block 80 and improves work efficiency. At the same time, multiple linkage mechanisms 834 control multiple grippers 830 to install and fix the upper mold pressure block 80, effectively improving the fixing stability of the upper mold pressure block 80. The upper mold pressure block 80 is not prone to loosening after installation. Furthermore, the hydraulic drive component 832 drives the grippers 830 to fix and release quickly through the linkage mechanism 834, thereby improving the speed of replacing and installing the upper mold pressure block 80.

[0104] Example 4:

[0105] This embodiment provides an automated sheet metal bending machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including: a release part 11, which includes a pressure roller 110 and a damping member 112 that is unidirectionally connected to the pressure roller 110;

[0106] In this configuration, after the gripper 830 releases the connecting block 85, the connecting column 84 can drive the pressure roller 110 to rotate and transmit force to the slow-release section 11. The slow-release section 11 can reverse control the rotation speed of the pressure roller 110 through gas micropore damping so that the connecting column 84 can descend slowly.

[0107] Damping element 112 also includes:

[0108] The damping disk 1120 has an arc-shaped piston cavity 1121 concentric with the damping disk 1120; the piston body 1122 is disposed in the arc-shaped piston cavity 1121; and the piston rod 1123 is rotatably mounted in the damping disk 1120.

[0109] The piston rod 1123 is driven by a shaft connected to the pressure roller 110 to rotate with the pressure roller 110, thereby driving the piston body 1122 to move in the piston chamber. The piston chamber is connected to the external environment through a gas damping micropore, and the piston body 1122 can automatically reset after moving.

[0110] Furthermore, the slow-release unit 11 can be installed in the connecting plate 81 in a conventional manner, such as by having a cavity and a groove in the connecting plate 81. One end of the cavity is connected to the insertion hole 82, and there are sliding grooves on both sides of the inner wall of the cavity. A bearing seat 13 is slidably installed in the sliding groove. The back of the bearing seat 13 (i.e., the side away from the insertion hole 82) is supported by an elastic element 17. The elastic element 17 is a conventional elastic telescopic rod. The pressure roller 110 is connected to the bearing seat 13 through the wheel axle 14. The pressure roller 110 is supported by the elastic element 17. The force abuts against the surface of the connecting post 84 of the insertion hole 82. One end of the groove near the front surface of the connecting platform is open and fitted with a removable cover. The groove contains a removable shaft support and a damping disc 1120 mounting block. An intermediate shaft 15 is rotatably mounted in the shaft support. The intermediate shaft 15 is connected to the wheel axle 14 via a conventional unidirectional transmission method, such as a ratchet mechanism. An end shaft 16 is rotatably mounted in the damping disc 1120 mounting block. The end shaft 16 is connected to the intermediate shaft 14 via a conventional keyway method. The damping disc 1120 is connected to the drive shaft 15. The damping disc 1120 also has a cover on its side, which seals against the damping disc 1120 to seal the piston chamber. The end shaft 16 extends into the damping disc 1120 and connects to the piston rod 1123. The piston rod 1123 consists of an arc-shaped rod at one end and a straight rod at the other. One end of the straight rod is connected to the end shaft 16, and the other end is connected to the arc-shaped rod. The end of the arc-shaped rod away from the straight rod is connected to the piston body 1122. The arc-shaped piston chamber 1121... The damping disc 1120 has a conventional arc-shaped spring, one end of which is connected to the end of the piston chamber and the other end is connected to the piston body 1122. The damping disc 1120 also has a cavity for cooperating with the piston rod 1123 to rotate. Preferably, there are two arc-shaped piston chambers 1121 evenly arranged along the circumference of the damping disc 1120. The gas damping micro-holes can be arranged on the side, circumference or cover of the damping disc 1120. There is no particular limitation. The gas damping micro-holes only need to connect the piston chamber with the external environment.

[0111] In this embodiment, during the replacement and disassembly process of the upper mold pressure block 80, the control fixing part 83 is operated, the hydraulic drive component 832 drives the center plate 833 to move and causes the linkage mechanism 834 to move. Several grippers 830 gradually unfold and leave the fixing groove 850, thereby releasing the connecting block 85. After the connecting block 85 is released, the connecting column 84 and the upper mold pressure block 80 fall downward under the action of gravity. At this time, as the connecting column 84 moves, the pressure roller 110 that abuts against its surface rotates simultaneously. The rotation of the pressure roller 110 drives the piston rod 1123 to rotate around the axis in the damping disk 1120 through various shafts. The piston body 1122 moves in the piston cavity with the rotation of the piston rod 1123 and compresses the air in the piston cavity. The compressed air is slowly released outward through the gas damping micropores, thereby generating gas micropore damping. The reverse gas micropore damping is achieved through the reverse... The rotation speed of the pressure roller 110 is controlled to regulate the falling speed of the connecting rod, allowing the upper mold block 80 to be released slowly after it is disassembled. This provides sufficient time for workers to retrieve the released upper mold block 80, facilitating single-person replacement and disassembly of the upper mold block 80. After the upper mold block 80 is completely released, the connecting post 84 leaves the insert block. At this time, the elastic force of the arc spring causes the piston rod 1123 to reset, ready for the next replacement and disassembly. When installing the upper mold block 80, since the pressure roller 110 is unidirectionally connected to the damping element 112, the insertion of the connecting post 84 is not affected by the damping element 112. Furthermore, compared to traditional friction damping methods, the slow-release structure used in this invention can effectively avoid the effects of wear, and the slow-release effect is stable.

[0112] Example 5:

[0113] This embodiment provides an automated sheet metal bending machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The present invention also discloses a method of using the above-mentioned automated sheet metal bending machine, comprising the following steps:

[0114] S1 parameter setting: Before bending the sheet metal, input the corresponding parameters through the control center 6 according to the bending requirements of the sheet metal and the specifications of the upper and lower mold units;

[0115] S2 Sheet insertion: Insert the sheet into the lower mold unit 9. The sliding stop 70 of the positioning mechanism 7 blocks the insertion end of the sheet after it is inserted, thus controlling the insertion depth of the sheet.

[0116] S3 The sheet metal is bent, and the hydraulic pump 4 in the hydraulic system is started. The hydraulic pump 4 drives the hydraulic cylinder 5 to work. The upper mold mounting platform 3 is lowered under the drive of the hydraulic cylinder 5, so that the upper mold pressure block 80 on the upper mold unit 8 approaches the lower mold pressure block 90 on the lower mold unit 9, and finally the sheet metal is bent.

[0117] S4 Replace the upper mold pressure block 80, control the hydraulic action of the fixing part 83 to release the connecting block 85 by the gripper 830. After the connecting block 85 is released, the connecting column 84 descends under the gravity of the upper mold pressure block 80. The release part 11 controls the release speed of the connecting column 84 with the pressure roller 110. Then, the released upper mold pressure block 80 is replaced, and the connecting column 84 of the replaced upper mold pressure block 80 is inserted into the insertion hole 82. Finally, the gripper 830 of the fixing part 83 grips the connecting block 85 on the connecting column 84 to complete the fixing of the upper mold pressure block 80.

[0118] In this embodiment, the automated sheet metal bending machine has a high degree of automation in the positioning of the sheet metal and the movement distance of the upper and lower dies during the processing, which effectively improves the bending accuracy of the sheet metal. At the same time, when replacing the upper die pressure block of different specifications and sizes, the replacement steps are simple, which effectively improves the work efficiency.

[0119] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An automated sheet metal bending machine, comprising: The machine body (1) has a lower mold mounting platform (2) on its front side; The upper mold mounting platform (3) is set on the machine body (1) and located above the lower mold mounting platform (2). The upper mold mounting platform (3) can be raised and lowered in the vertical direction. A hydraulic system, the hydraulic system comprising a hydraulic pump (4) and a hydraulic cylinder (5) connected by oil pipes; The control system includes a control center (6) installed on the body (1); Its characteristic is that it further includes: Positioning mechanism (7), which is set on the machine body (1) and located on the rear side of the lower mold, includes a sliding stop (70) that can control the insertion depth of the sheet metal; The upper mold unit (8) includes several upper mold pressing blocks (80) that are detachably mounted on the upper mold mounting platform (3); The lower mold unit (9) includes several lower mold pressing blocks (90) that are detachably mounted on the lower mold mounting platform (2); The upper mold mounting platform (3) is driven by a hydraulic cylinder (5) to move vertically. The upper mold pressing block (80) and the lower mold pressing block (90) are engraved with serial numbers composed of pressing block parameters. The control center (6) has built-in stamping parameters that match the serial numbers. The control center (6) automatically matches the parameters by inputting the serial numbers of the upper mold pressing block (80) and the lower mold pressing block (90) to realize the automatic control of the upper mold pressing block (80) and the lower mold pressing block (90). The upper mold unit (8) also includes: A connecting plate (81) is fixedly installed at the bottom of the upper mold mounting platform. The connecting plate (81) has several insertion holes (82) for the upper mold pressing block (80) to be installed and connected. A fixing part (83) is located in the insertion hole (82) and fixedly connected to the upper mold mounting table. The fixing part (83) includes a plurality of grippers (830) that are hydraulically driven. A connecting post (84) is provided on the top of the upper molding block (80), and the top of the connecting post (84) is provided with a connecting block (85) that cooperates with a plurality of grippers (830); The upper mold pressing block (80) is fixed on the upper mold mounting table (3) by several grippers (830) after the connecting column (84) is inserted into the insertion hole (82); Also includes: The slow-release section (11) includes a pressure roller (110) and a damping element (112) that is unidirectionally connected to the pressure roller (110); The connecting column (84) can drive the pressure roller (110) to rotate and transmit force to the slow-release part (11) after the gripper (830) releases the connecting block (85). The slow-release part (11) can control the rotation speed of the pressure roller (110) through gas micropore damping to make the connecting column (84) descend slowly. The fixing part (83) also includes: Mounting base (831), the mounting base (831) having a hydraulic drive (832) and a center plate (833) below the mounting base (831); Linkage mechanism (834), wherein several linkage mechanisms (834) are provided corresponding to the gripper (830) and are evenly spaced along the circumference of the center plate (833); The center plate (833) can be raised and lowered under the drive of the hydraulic drive (832), the gripper (830) is connected to the linkage mechanism (834) in a transmission, the center plate (833) can drive the linkage mechanism (834) to move during the raising and lowering process, and the gripper (830) expands or contracts with the movement of the linkage mechanism (834). The damping element (112) also includes: A damping disk (1120) having an arc-shaped piston cavity (1121) concentric with the damping disk (1120); A piston body (1122) is disposed in an arc-shaped piston cavity (1121); A piston rod (1123) is rotatably mounted in a damping disc (1120); The piston rod (1123) is driven by a shaft connected to the pressure roller (110) to rotate with the pressure roller (110) and drive the piston body (1122) to move in the piston chamber. The piston chamber is connected to the external environment through a gas damping micropore. The piston body (1122) can automatically reset after moving.

2. The automated sheet metal bending machine according to claim 1, characterized in that, The positioning mechanism (7) also includes: A support frame (71) is mounted on the machine body (1) and located on the rear side of the lower mold; The sliding block (70) is slidably coupled to the support frame (71) in the lateral direction of the lower mold mounting platform (2), and the moving distance of the sliding block (70) can be controlled by the control system.

3. The automated sheet metal bending machine according to claim 2, characterized in that, The hydraulic system also includes: Oil pipe connector (10), the oil pipe connector (10) is provided at the connection end of the oil pipe for connecting adjacent oil pipes; The oil pipe connector (10) can cooperate with the oil pipe to form multiple seals.

4. An automated sheet metal bending machine according to claim 3, characterized in that, The oil pipe connector (10) also includes: The main connector (100) has a slot (101) for inserting the end of the oil supply pipe and a tube (102) for inserting into the oil pipe. The slot (101) has a sealing part (103) that can form a sealing fit with the end face of the oil pipe. Pipe clamp (104), said pipe clamp (104) is clamped on the part of the oil pipe into which the insert pipe (102) is inserted; A reinforcing sleeve (105) is formed by two half-cylinders wrapped around the outside of the main connector (100). The inner wall of the reinforcing sleeve (105) has a convex ring (106) that can close the slot (101) and press the oil pipe. The end of the reinforcing sleeve (105) has a self-tightening ring (107). The self-tightening ring (107) uses a wedge-shaped structure to press the oil pipe onto the insertion tube (102) to prevent the oil pipe from coming loose when it comes loose.

5. An automated sheet metal bending machine according to claim 4, characterized in that, The connecting block (85) also includes: The fixing groove (850) has a plurality of grooves and is evenly spaced along the circumference of the connecting block (85) on the side wall of the connecting block (85). The fixing groove (850) is triangular with a wide bottom and a narrow top.

6. A method of using the automated sheet metal bending machine according to claim 5, characterized in that, Includes the following steps: S1 parameter setting: Before bending the sheet metal, input the corresponding parameters through the control center (6) according to the bending requirements of the sheet metal and the specifications of the upper and lower mold units; S2 Plate insertion: Insert the plate into the lower mold unit (9). The sliding block (70) of the positioning mechanism (7) blocks the insertion end of the plate after it is inserted, thus controlling the insertion depth of the plate. S3 The sheet metal is bent, the hydraulic pump (4) in the hydraulic system is started, the hydraulic pump (4) drives the hydraulic cylinder (5) to work, the upper mold mounting platform (3) is lowered under the drive of the hydraulic cylinder (5), so that the upper mold pressure block (80) on the upper mold unit (8) approaches the lower mold pressure block (90) on the lower mold unit (9), and finally the sheet metal is bent. S4 Replace the upper molded block (80), control the hydraulic action of the fixing part (83) to release the connecting block (85) by the gripper (830). After the connecting block (85) is released, the connecting column (84) descends under the gravity of the upper molded block (80). The release part (11) controls the release speed of the connecting column (84) with the pressure roller (110). Then, the released upper molded block (80) is replaced. The connecting column (84) of the replaced upper molded block (80) is inserted into the socket (82). Finally, the gripper (830) of the fixing part (83) grips the connecting block (85) on the connecting column (84) to complete the fixing of the upper molded block (80).

Images