Metal bolt multi-station forging equipment capable of quickly changing die

Abstract

The metal bolt multi-station forging equipment comprises a workbench, a U-shaped frame is fixedly installed at the top of the workbench, a storage assembly is arranged on the rear side of the U-shaped frame, and the storage assembly is used for storing moving dies of different models; the pushing assembly is arranged on the rear side of the storage assembly and used for pushing the storage assembly; the multiple sets of rotating wheel assemblies are rotationally connected to the surface of the workbench and correspond to the hydraulic cylinders on the corresponding sides in position. The control assembly is installed on one side of the U-shaped frame, through the arrangement of the storage assembly, the propelling assembly, the rotary mechanism and the control assembly, the storage assembly stores multiple movable molds in advance, the rotary mechanism is provided with multiple sets of static molds, the control assembly is controlled, switching between the movable molds and the static molds can be rapidly completed, and compared with manual mold replacement, the mold replacement efficiency is improved. The production preparation time is greatly shortened, and the problem of low efficiency caused by manual die replacement of original equipment is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-station forging equipment for metal bolts with quick die change, and specifically provides a multi-station forging equipment for metal bolts with quick die change. Background Technique

[0002] A metal bolt is a mechanical part, usually made of metal material, with threads, used to connect and fasten various components. By cooperating with a nut or a component with internal threads, it generates a fastening force to ensure the firmness and stability of the connection, and is widely used in many fields such as construction, machinery, automobiles, and aerospace.

[0003] According to the Chinese patent with the publication number CN222588028U, a forging equipment for wear-resistant and anti-slip bolt fasteners is disclosed, including a housing. A heating mechanism is provided on the housing. The heating mechanism includes a rectangular hole, a controller, and a temperature sensor. A first electric push rod is installed at the top of the inner wall of the rectangular hole. A second electric push rod is installed near the edge of the bottom of the slider. An electromagnetic heating coil is fixedly sleeved between the two circular holes of the double-hole insulating block. In this invention, by setting the heating mechanism, the forging equipment can have the function of automatic heating, that is, the bolt raw material can be directly placed in the die of the forging equipment, and when the top is heated, it can be directly forged. Such a production method not only reduces the labor intensity of the staff, but also improves the production efficiency, improves the use effect of the forging equipment, and also improves the use efficiency of the forging equipment.

[0004] The above-mentioned forging equipment for wear-resistant and anti-slip bolt fasteners has some problems in use. Although it can make the forging equipment have the function of automatic heating, when producing bolts of different specifications, it may be necessary to manually replace the die, and the speed of manual operation is relatively slow, which greatly prolongs the production preparation time, thereby increasing the production cost and production preparation time and reducing the use efficiency of the equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-station forging equipment for metal bolts with quick die change to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A multi-station forging equipment for metal bolts with quick die change, including a workbench, on the top of which a U-shaped frame is fixedly installed; hydraulic cylinders, with multiple groups of hydraulic cylinders fixedly installed on the top of the U-shaped frame in sequence from left to right, and the telescopic ends of multiple groups of hydraulic cylinders are all connected with fixed rods through quick-release components, and the bottoms of the fixed rods are all fixedly connected with moving dies for forging bolts; a storage component, which is arranged at the rear side of the U-shaped frame and is used for storing moving dies of different models; a propulsion component, which is arranged at the rear side of the storage component and is used for pushing the storage component; multiple groups of rotating components, with multiple groups of rotating components respectively rotatably connected to the surface of the workbench and corresponding to the hydraulic cylinders on the corresponding side; wherein, the rotating component includes a turntable and multiple groups of static dies of different models, the turntable is rotatably connected to the surface of the workbench, and multiple groups of static dies are arranged in a circular array and are respectively connected to the surface of the turntable through detachable components; a control component, which is installed on one side of the U-shaped frame, and both the propulsion component and the quick-release component are controlled by the control component, and the control component can control the propulsion component to push the required model of the moving die to directly below the telescopic end of the hydraulic cylinder according to the need, and the control component can control the rotating component to rotate the matching static die to the coaxial position with the moving die according to the moving die model.

[0008] As a preferred technical solution, the quick-release component includes a card slot opened at the neck of each fixed rod, a fixed cylinder is sleeved on the head of each fixed rod, and an anti-detachment component for clamping in the inner cavity of the card slot to fix the fixed rod and prevent it from falling off is arranged in the inner cavity of each fixed cylinder, and the tops of each group of fixed cylinders are respectively fixedly connected to the telescopic ends of the corresponding side hydraulic cylinders;

[0009] The storage component is a U-shaped frame fixedly installed at the rear side of the U-shaped frame, an installation plate is slidably connected in the inner cavity of the U-shaped frame, a number of circular holes for inserting the fixed rods are opened at the top of the installation plate, the number of a number of circular holes in the same row is the same as the number of hydraulic cylinders and is aligned with the corresponding side hydraulic cylinders, and circular grooves are arranged at the bottom of the installation plate and below each circular hole, and an L-shaped strip is connected to one side of each circular groove through a fixing piece, and the top of each L-shaped strip is fixedly connected to the bottom of the installation plate. When the fixed rod is inserted into the inner cavity of the circular hole, the moving die fixed at its end is inserted into the inner cavity of the circular groove;

[0010] The propulsion component includes a circular hole opened in the middle of the installation plate, a lead screw is rotatably connected in the inner cavity of the circular hole, a nut seat is threadedly connected to the surface of the lead screw, the nut seat is fixedly inserted into the rear opening of the circular hole, and a second motor is fixedly installed at the rear side of the U-shaped frame, and the output shaft of the second motor is key-connected to the end of the lead screw;

[0011] At the bottom of the workbench and below each group of the turntables, mounting brackets are provided. The top of each group of mounting brackets is fixedly connected to the bottom surface of the workbench. At the bottom of each group of mounting brackets, a servo motor is fixedly connected. The output shaft of each servo motor rotates upward through the mounting bracket and is key-connected to the corresponding turntable on one side;

[0012] The detachable component includes internal thread grooves formed on the surface of the turntable and corresponding to each group of static molds. On the surface of each group of static molds, external threads adapted to the internal thread grooves are fixedly provided. Each group of static molds is threadedly connected to the inner cavity of the internal thread groove at the corresponding position through the external threads. At the bottom of each group of static molds, a pushing component is provided to push the forged bolt upward out of the inner cavity of the static mold.

[0013] As a preferred technical solution, the control component includes a controller and an operation screen fixedly installed on one side of the U-shaped frame. The output end of the operation screen is electrically connected to the signal input end of the controller through a wire. The second motor, the servo motor, and the hydraulic cylinder are all controlled by the controller. The controller is electrically connected to a positioning module A and a positioning module B through wires respectively. The positioning module A is used to give feedback to the controller when the required moving mold moves to directly below the telescopic end of the hydraulic cylinder. The positioning module B is used to give feedback to the controller when the static mold rotates to the coaxial position of the moving mold.

[0014] As a preferred technical solution, the positioning module A includes several groups of second Hall sensors. Several groups of the second Hall sensors are respectively embedded in the top right side of the mounting plate and aligned with the center lines of the corresponding circular holes. On one inner wall of the U-shaped frame and at the same axial position as the telescopic end of the hydraulic cylinder, an L-shaped plate is fixedly installed. The end of the L-shaped plate is fixedly connected to a fixed ring. Inside the inner cavity of the fixed ring, a second induction block for cooperating with the second Hall sensors is provided;

[0015] The positioning module B is embedded in the surface of the turntable and includes first Hall sensors located at positions corresponding to each group of static molds. At the bottom of the workbench and on one side of each group of turntables, first induction blocks for cooperating with the first Hall sensors are provided. The first induction blocks are in the horizontal plane in the transverse direction with the axis of the telescopic end of the hydraulic cylinder.

[0016] As a preferred technical solution, the anti - detachment component includes a strip - shaped hole formed in the front side of the fixed cylinder and at the same height as the card slot. A push block is slidably connected to the inner cavity of the strip - shaped hole. The front side of the push block is arranged in an arc corresponding to the fixed rod. A fixed strip adapted to the inner cavity of the card slot is fixedly installed on the front side of the push block. An electric push rod is fixedly installed on the front side of the fixed cylinder. The telescopic end of the electric push rod extends into the inner cavity of the strip - shaped hole and is fixedly connected to the end of the push block. The electric push rod is controlled by a controller. Strip - shaped grooves are formed on both sides of the fixed cylinder, and clamping components are arranged in the inner cavities of the two strip - shaped grooves;

[0017] Pressure sensors are embedded in the inner walls of the top of the fixed cylinder. The detection ends of the pressure sensors are oriented. The signal output ends of the pressure sensors are electrically connected to the signal input end of the controller through wires.

[0018] As a preferred technical solution, the clamping component includes connecting rods arranged in the inner cavities at the rear sides of the two strip - shaped grooves. Strip - shaped plates are rotatably sleeved on the surfaces of the two connecting rods. Clamping strips adapted to the card slot are fixedly connected to the middle parts of the opposite sides of the two strip - shaped plates. Connecting strips are rotatably connected to the front - side opposite ends of the two strip - shaped plates. The opposite - side ends of the two connecting strips are respectively rotatably connected to the two ends of the front side of the push block. When the push block moves forward, the front - side ends of the two strip - shaped plates are driven to rotate inwards simultaneously through the connecting strips, so that the fixedly - arranged clamping strips can penetrate through the strip - shaped grooves and be clamped in the inner cavity of the card slot.

[0019] As a preferred technical solution, a guiding tube is fixedly connected to the mouth of each fixed cylinder. The guiding tube is arranged in a horn shape, and the large end of the guiding tube faces downwards.

[0020] As a preferred technical solution, the fixing member includes a slot formed in the lower end of each L - shaped strip. An insertion block is inserted into the inner cavity of each slot. Each insertion block is fixedly connected to the surface of the corresponding circular groove. Fixing bolts are arranged at the lower ends of each L - shaped plate. Each fixing bolt threadedly penetrates upwards through the L - shaped plate and the corresponding insertion block;

[0021] Strong magnets are embedded at the bottoms of each circular groove.

[0022] As a preferred technical solution, the pushing - out component includes an installation tube fixedly connected to the bottom of each static mold. A spring is arranged in the inner cavity of each installation tube. A sliding disk is arranged in the inner cavity of each installation tube and above the spring. A guide rod is fixedly connected to the top of each sliding disk. Each guide rod extends upwards into the inner cavity of the corresponding static mold and is fixedly connected to a push disk. A closing component for closing the mouth to prevent the spring from falling off is arranged at the lower mouth of each installation tube.

[0023] As a preferred technical solution, the closing component includes a threaded cap threadedly connected to the lower opening of the installation pipe.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. Through the settings of the storage component, the propulsion component, the rotation mechanism, and the control component, the storage component pre-stores a variety of moving dies, the rotation component is equipped with multiple sets of static dies, and by controlling the control component, the switching between the moving die and the static die can be quickly completed, so as to adapt to the diverse bolt forging requirements, enabling the same equipment to produce bolts of different specifications. And compared with manual die replacement, the production preparation time is greatly shortened, solving the problem of low efficiency caused by manual die replacement in the original equipment.

[0026] 2. Through the setting of the control component, the controller can accurately control the second motor to drive the lead screw, realizing the precise displacement of the mounting plate driving the moving die; at the same time, controlling the servo motor to make the turntable drive the static die to quickly rotate to the designated position. Under the unified scheduling of the controller, each device cooperates closely, thus avoiding the time waste caused by the uncoordinated cooperation between devices. At the same time, there is no need to manually adjust each device one by one, greatly reducing the operation difficulty.

[0027] 3. Through the settings of the positioning module A and the positioning module B, the positioning module A uses the second Hall sensor to cooperate with the second induction block, and the positioning module B uses the first Hall sensor to cooperate with the first induction block. Moreover, the Hall sensor is sensitive in induction, can accurately detect the position changes of the moving die and the static die, and timely feedback the signal to the controller. Compared with other positioning methods, it has higher accuracy and reliability, ensuring the accuracy of die switching and alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic structural diagram of a multi-station forging equipment for metal bolts with quick die change according to the present invention;

[0029] Figure 2 It is a schematic structural diagram from another perspective of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the turntable of the present invention;

[0031] Figure 4 It is a schematic structural diagram of the position where the internal thread groove is opened according to the present invention;

[0032] Figure 5 It is a schematic structural diagram of the spring of the present invention;

[0033] Figure 6 It is a schematic structural diagram of the fixed rod of the present invention;

[0034] Figure 7 Structural schematic diagram of the position where the strip-shaped groove of the present invention is opened;

[0035] Figure 8 Structural schematic diagram of the position where the strip-shaped hole of the present invention is opened;

[0036] Figure 9 Cross-sectional structural schematic diagram of the mounting plate of the present invention;

[0037] Figure 10 Structural schematic diagram of the L-shaped strip of the present invention;

[0038] Figure 11 For the present invention Figure 1 Enlarged structural schematic diagram at position A;

[0039] Figure 12 Structural schematic diagram of the pressure sensor of the present invention.

[0040] In the figure:

[0041] 100, workbench; 101, moving mold; 102, U-shaped frame; 103, hydraulic cylinder;

[0042] 200, turntable; 201, stationary mold; 202, mounting frame; 203, servo motor; 204, external thread; 205, mounting pipe; 206, threaded cap; 207, internal thread groove; 208, first Hall sensor; 209, push plate; 210, guide rod; 211, sliding plate; 212, spring; 213, first induction block;

[0043] 300, fixed rod; 301, guide pipe; 302, fixed cylinder; 303, strip-shaped groove; 304, strip-shaped hole; 305, connecting rod; 306, strip-shaped plate; 307, connecting strip; 308, push block; 309, electric push rod; 310, card slot; 311, fixed strip; 312, clamping strip;

[0044] 400, U-shaped frame; 401, mounting plate; 402, second Hall sensor; 403, circular hole; 404, round hole; 405, lead screw; 406, nut seat; 407, second motor; 408, circular groove; 409, L-shaped strip; 410, strong magnet; 411, insertion block; 412, fixing bolt; 413, insertion slot;

[0045] 500, controller; 501, operation screen; 502, L-shaped plate; 503, fixing ring; 504, second induction block; 505, pressure sensor. Detailed implementation manners

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] Please refer to Figure 1-12 , this embodiment provides a multi-station forging equipment for metal bolts with quick die change, including a workbench 100, and a U-shaped frame 102 is fixedly installed on the top of the workbench 100; a hydraulic cylinder 103, and there are multiple groups of hydraulic cylinders 103. The multiple groups of hydraulic cylinders 103 are fixedly installed on the top of the U-shaped frame 102 in sequence from left to right. The telescopic ends of the multiple groups of hydraulic cylinders 103 are all connected with a fixed rod 300 through a quick-release component. The bottoms of the fixed rods 300 are fixedly connected with a moving die 101 for bolt forging; a storage component, which is arranged at the rear side of the U-shaped frame 102 and is used for storing moving dies 101 of different models; a propulsion component, which is arranged at the rear side of the storage component and is used for pushing the storage component; a rotating component, and there are multiple groups of rotating components. The multiple groups of rotating components are respectively rotatably connected to the surface of the workbench 100 and are in corresponding positions with the hydraulic cylinders 103 on the corresponding side; wherein, the rotating component includes a turntable 200 and multiple groups of stationary dies 201 of different models. The turntable 200 is rotatably connected to the surface of the workbench 100. The multiple groups of stationary dies 201 are arranged in a circular array and are respectively connected to the surface of the turntable 200 through a detachable component; a control component, which is installed on one side of the U-shaped frame 102. The propulsion component and the quick-release component are both controlled by the control component. The control component can control the propulsion component to push the required model of the moving die 101 to the directly below the telescopic end of the hydraulic cylinder 103 according to the need. The control component can control the rotating component to rotate the matching stationary die 201 to the coaxial position with the moving die 101 according to the model of the moving die 101. Through the settings of the storage component, the propulsion component, the rotating mechanism and the control component, the storage component pre-reserves multiple moving dies 101, the rotating component is equipped with multiple groups of stationary dies 201, and by controlling the control component, the switching between the moving die 101 and the stationary die 201 can be quickly completed, so as to adapt to the diversified bolt forging requirements, enable the same equipment to produce bolts of different specifications, and compared with manual die change, the production preparation time is greatly shortened, and the problem of low efficiency caused by manual die change of the original equipment is solved.

[0048] Among them, the quick-release component includes a card slot 310 opened at the neck of each fixed rod 300. A fixing cylinder 302 is sleeved on the head of each fixed rod 300. An anti-detachment component for clamping in the inner cavity of the card slot 310 to fix the fixed rod 300 to prevent it from falling off is arranged in the inner cavity of each fixing cylinder 302. The tops of each group of fixing cylinders 302 are respectively fixedly connected to the telescopic ends of the corresponding side hydraulic cylinders 103;

[0049] The storage component is fixedly installed on the U-shaped frame 400 at the rear side of the U-shaped frame 102. A mounting plate 401 is slidably connected to the inner cavity of the U-shaped frame 400. A number of circular holes 403 for inserting the fixing rods 300 are formed at the top of the mounting plate 401. The number of a number of groups of circular holes 403 in the same row is the same as the number of hydraulic cylinders 103 and is aligned with the corresponding side hydraulic cylinders 103. At the bottom of the mounting plate 401 and below each group of circular holes 403, circular grooves 408 are provided. One side of each group of circular grooves 408 is connected to an L-shaped strip 409 through a fixing member. The top of each group of L-shaped strips 409 is fixedly connected to the bottom of the mounting plate 401. When the fixing rod 300 is inserted into the inner cavity of the circular hole 403, the moving die 101 fixed to its end is inserted into the inner cavity of the circular groove 408. Through the setting of the circular groove 408, the mounting plate 401 in the U-shaped frame 400 stores different models of moving dies 101 in an orderly manner through the circular holes 403 and the circular grooves 408. The L-shaped strips and the fixing members ensure the stable placement of the moving die 101;

[0050] The propulsion component includes a circular hole 404 formed in the middle of the mounting plate 401. A lead screw 405 is rotatably connected to the inner cavity of the circular hole 404. A nut seat 406 is threadedly connected to the surface of the lead screw 405. The nut seat 406 is fixedly inserted into the rear opening of the circular hole 404. A second motor 407 is fixedly installed on the rear side of the U-shaped frame 400. The output shaft of the second motor 407 is key-connected to the end of the lead screw 405. Through the setting of the propulsion component, the second motor 407 drives the lead screw 405 to drive the mounting plate 401 to slide in the U-shaped frame 400. The threaded cooperation between the nut seat 406 and the lead screw 405 makes the movement of the mounting plate 401 accurate and controllable, and can accurately move a specific moving die 101 to directly below the telescopic end of the hydraulic cylinder 103, ensuring the accuracy of the replacement position of the moving die 101;

[0051] Mounting frames 202 are provided at the bottom of the workbench 100 and below each group of turntables 200. The top of each group of mounting frames 202 is fixedly connected to the bottom surface of the workbench 100. The bottom of each group of mounting frames 202 is fixedly connected with a servo motor 203. The output shaft of each group of servo motors 203 rotates upward through the mounting frame 202 and is key-connected to the corresponding side turntable 200. Through the setting of the servo motor 203, the servo motor 203 drives the turntable 200 to rotate, rotates the matching stationary die 201 to the coaxial position with the moving die 101, realizes the rapid switching of the stationary die 201, and meets the requirements of different bolt forging processes for the mold combination;

[0052] The detachable components include internal thread grooves 207 formed on the surface of the turntable 200 and corresponding to each group of stationary molds 201. External threads 204 adapted to the internal thread grooves 207 are fixedly arranged on the surface of each group of stationary molds 201. Each group of stationary molds 201 is threadedly connected to the inner cavity of the internal thread grooves 207 at the corresponding positions through the external threads 204. A pushing component for pushing the forged bolts upward out of the inner cavity of the stationary mold 201 is arranged at the bottom of each group of stationary molds 201. Through the setting of the detachable components, the stationary mold 201 is connected to the internal thread groove 207 of the turntable 200 through the external thread 204, and the installation and disassembly are simple and convenient. When it is necessary to replace the stationary mold 201 for producing bolts of different specifications, the staff can quickly complete the operation, improving the response speed of the equipment to different production tasks.

[0053] Among them, the control component includes a controller 500 and an operation screen 501 fixedly installed on one side of the U-shaped frame 102. The output end of the operation screen 501 is electrically connected to the signal input end of the controller 500 through a wire. The second motor 407, the servo motor 203, and the hydraulic cylinder 103 are all controlled by the controller 500. The controller 500 is electrically connected to a positioning module A and a positioning module B through wires respectively. The positioning module A is used to feedback to the controller 500 when the required moving mold 101 moves to directly below the telescopic end of the hydraulic cylinder 103. The positioning module B is used to feedback to the controller 500 when the stationary mold 201 rotates to the coaxial position of the moving mold 101. Through the setting of the control component, the controller 500 can accurately control the second motor 407 to drive the lead screw 405, realizing the precise displacement of the mounting plate 401 driving the moving mold 101; at the same time, controlling the servo motor 203 to make the turntable 200 drive the stationary mold 201 to quickly rotate to the specified position. Under the unified scheduling of the controller 500, each device closely cooperates, thus avoiding the time waste caused by the uncoordinated cooperation between devices. At the same time, there is no need to manually adjust each device one by one, greatly reducing the operation difficulty.

[0054] Among them, the positioning module A includes several groups of second Hall sensors 402. The several groups of second Hall sensors 402 are respectively embedded in the top right side of the mounting plate 401 and aligned with the center line of the corresponding circular hole 403. An L-shaped plate 502 is fixedly installed on one inner wall of the U-shaped frame 102 and at the same axial position as the telescopic end of the hydraulic cylinder 103. A fixing ring 503 is fixedly connected to the end of the L-shaped plate 502. A second induction block 504 for cooperating with the second Hall sensors 402 is arranged in the inner cavity of the fixing ring 503;

[0055] The positioning module B is embedded in the surface of the turntable 200 and is located at the position of the first Hall sensor 208 corresponding to each set of static molds 201. At the bottom of the workbench 100 and at the position on one side of each turntable 200, a first induction block 213 for cooperating with the first Hall sensor 208 is provided. The first induction block 213 and the axis of the telescopic end of the hydraulic cylinder 103 are in the horizontal plane. Through the setting of the positioning module A and the positioning module B, the positioning module A uses the second Hall sensor 402 and the second induction block 504 for cooperation, and the positioning module B uses the first Hall sensor 208 and the first induction block 213 for cooperation. Moreover, the Hall sensor is sensitive and can accurately detect the position changes of the moving mold 101 and the static mold 201, and timely feedback the signals to the controller 500. Compared with other positioning methods, it has higher accuracy and reliability, ensuring the accuracy of mold switching and alignment.

[0056] Among them, the controller 500 can be a DSP controller 500, and its model can be TMS320F2812. The model of the pressure sensor 505 can be the Honeywell SS2 series. The models of the first Hall sensor 208 and the second Hall sensor 402 can be one of A3144E, SS495A, and UGN3503U.

[0057] Among them, the first Hall sensor 208 and the second Hall sensor 402 are respectively electrically connected to the signal input end of the controller 500 through wires.

[0058] Among them, the first induction block 213 and the second induction block 504 are magnets.

[0059] Among them, the anti-detachment component includes a strip-shaped hole 304 opened on the front side of the fixed cylinder 302 and at the same height as the card slot 310. A push block 308 is slidably connected to the inner cavity of the strip-shaped hole 304. The front side of the push block 308 is arranged in an arc corresponding to the fixed rod 300. A fixing strip 311 adapted to the inner cavity of the card slot 310 is fixedly installed on the front side of the push block 308. An electric push rod 309 is fixedly installed on the front side of the fixed cylinder 302. The telescopic end of the electric push rod 309 extends into the inner cavity of the strip-shaped hole 304 and is fixedly connected to the end of the push block 308. The electric push rod 309 is controlled by the controller 500. Strip-shaped grooves 303 are opened on both sides of the fixed cylinder 302, and clamping components are arranged in the inner cavities of the two strip-shaped grooves 303. Through the setting of the anti-detachment component, the electric push rod 309 controls the push block 308 to make the fixing strip 311 cooperate with the card slot 310 of the fixed rod 300. During the operation of the equipment, it effectively prevents the fixed rod 300 from falling off due to vibration, impact, etc., ensuring the stability of the moving mold 101 during forging and guaranteeing production safety and product quality;

[0060] The inner walls of the top of the fixed cylinder 302 are all inlaid with pressure sensors 505. The detection ends of the pressure sensors 505 are arranged facing each other. The signal output ends of the pressure sensors 505 are electrically connected to the signal input end of the controller 500 through wires. Through the setting of the pressure sensors 505, the pressure sensors 505 on the inner walls of the top of the fixed cylinder 302 can monitor the insertion depth and fixed state of the fixed rod 300 in real time. When the pressure value reaches the set range, it indicates that the fixed rod 300 is installed in place, and the controller 500 controls the electric push rod 309 to act to fix the fixed rod 300.

[0061] Among them, the clamping component includes a connecting rod 305 arranged in the inner cavity at the rear side of the two sets of strip-shaped grooves 303. The surfaces of the two sets of connecting rods 305 are both rotatably sleeved with strip-shaped plates 306. The middle parts of the opposite sides of the two sets of strip-shaped plates 306 are both fixedly connected with clamping strips 312 adapted to the clamping grooves 310. The front opposite end parts of the two sets of strip-shaped plates 306 are both rotatably connected with connecting strips 307. The opposite side end parts of the two sets of connecting strips 307 are respectively rotatably connected to the two ends of the front side of the push block 308. When the push block 308 moves forward, it drives the front end parts of the two sets of strip-shaped plates 306 to rotate inward simultaneously through the connecting strips 307, so that the fixedly connected clamping strips 312 on the surface can penetrate through the strip-shaped grooves 303 and be clamped in the inner cavity of the clamping grooves 310. Through the setting of the clamping component, the push block 308 drives the two sets of strip-shaped plates 306 to rotate through the connecting strips 307, so that the clamping strips 312 cooperate with the clamping grooves 310. And, the two sets of clamping strips 312 act simultaneously, increasing the stress area when the fixed rod 300 is fixed, improving the fixing effect, and effectively preventing the fixed rod 300 from loosening or falling off during the operation of the equipment.

[0062] Among them, a guide tube 301 is fixedly connected to the mouth part of each group of fixed cylinders 302. The guide tube 301 is arranged in a horn shape, and the large end of the guide tube 301 faces downward. Through the setting of the guide tube 301, the horn-shaped structure of the guide tube 301 not only facilitates the insertion of the fixed rod 300, but also can straighten and buffer the fixed rod 300 to a certain extent. Thus, when the fixed rod 300 is inserted into the fixed cylinder 302 under the action of the hydraulic cylinder 103, the guide tube 301 can guide the fixed rod 300 to accurately enter.

[0063] Among them, the fixing member includes a slot 413 opened at the lower end of each L-shaped strip 409. An insertion block 411 is inserted into the inner cavity of each slot 413. Each insertion block 411 is fixedly connected to the surface of the corresponding circular groove 408. A fixing bolt 412 is arranged at the lower end of each L-shaped strip 409. Each fixing bolt 412 respectively threads upward through the L-shaped strip 409 and the corresponding insertion block 411;

[0064] At the bottom of each group of circular grooves 408, a strong magnet 410 is inlaid. Through the setting of the fixing member, the L-shaped strip 409 is connected to the circular groove 408 through the slot 413, the insertion block 411 and the fixing bolt 412, which plays a stable supporting role for the moving die 101, and is convenient for separating the two groups, improving the convenience of replacing the circular groove 408. At the same time, the strong magnet 410 at the bottom of the circular groove 408 increases the attraction to the moving die 101, further improving the stability of the moving die 101 during storage and movement, ensuring that the moving die 101 will not be displaced or shaken during the operation of the equipment, and guaranteeing the accuracy of replacing the moving die 101.

[0065] Among them, the pushing component includes an installation pipe 205 fixedly connected to the bottom of each group of static dies 201. A spring 212 is arranged in the inner cavity of each installation pipe 205. A sliding disk 211 is arranged in the inner cavity of each installation pipe 205 and above the spring 212. A guide rod 210 is fixedly connected to the top of each sliding disk 211. Each guide rod 210 extends upward into the inner cavity of the corresponding static die 201 and is fixedly connected to a pushing disk 209. A closing component for closing the mouth to prevent the spring 212 from falling off is arranged at the lower mouth of each installation pipe 205. Through the setting of the pushing component, the pushing component composed of the spring 212, the sliding disk 211, the guide rod 210 and the pushing disk 209 in the installation pipe 205 can quickly push the bolt out of the inner cavity of the static die 201 after forging is completed. The elastic potential energy of the spring 212 is converted into the thrust of the guide rod 210. The unloading process is efficient and stable, reducing the labor intensity of manual unloading and improving the production efficiency.

[0066] Among them, the closing component includes a threaded cover 206 threadedly connected to the lower mouth of the installation pipe 205. Through the setting of the threaded cover 206, the threaded cover 206 serves as the closing component to prevent the spring 212 from falling off during normal production and ensure the normal operation of the pushing component. At the same time, when the spring 212 needs to be replaced, only the threaded cover 206 needs to be unscrewed to open the installation pipe 205, and the operation is simple and convenient.

[0067] Among them, the controller 500 is embedded with a dynamic pressure-position coupling control module, and this module executes the following positioning optimization equation:

[0068]

[0069] Among them:

[0070] F contact is the contact pressure value detected by the pressure sensor 505;

[0071] ΔS is the deviation between the actual displacement of the mounting plate 401 and the target position;

[0072] δ tol is the preset position tolerance threshold;

[0073] Δθ is the deviation between the actual angle and the target angle of the turntable 200;

[0074] N slot is the total number of static die stations of the turntable 200;

[0075] α, β, γ are the dynamic characteristic coefficients of the equipment (obtained through calibration tests);

[0076] k v is the speed gain coefficient of the hydraulic cylinder 103;

[0077] The controller 500 is configured to:

[0078] a) Call the pre-stored characteristic coefficients α, β, γ and k according to the target die coordinates v ;

[0079] b) Obtain ΔS and Δθ in real time through the positioning module A and the positioning module B;

[0080] c) Calculate F according to the feedback value of the pressure sensor 505 contact ;

[0081] d) Substitute into the equation to calculate the optimal synchronization time T sync ;

[0082] e) Control the rotation speed of the second motor 407 according to v = ΔS / (k v ·T sync )

[0083] f) Control the rotation speed of the servo motor 203 according to ω = Δθ / (k ω ·T sync )

[0084] g) Determine that the positioning is completed when ΔS ≤ δ tol and Δθ ≤ 0.5°.

[0085] The dynamic characteristic coefficients are determined through the following calibration process:

[0086] 1. Activate the pressure cube root dominant mode when ΔS = 3δ tol so that where v max is the maximum safe speed and F crash is the collision protection pressure threshold;

[0087] 2. Switch to the exponential compensation mode when ΔS = 0.5δ tol so that where ω max is the maximum angular velocity of the turntable and θ err is the maximum allowable angle deviation;

[0088] The γ value is adjusted dynamically according to the inertia characteristics of the turntable 200, where J is the moment of inertia of the turntable, R is the radius of the turntable, and m is the mass of the static mold 201; mold For example: when it is necessary to align the No. 3 moving mold with the No. 5 static mold:

[0089] 1. The controller 500 reads the current pressure value F

[0090] = 850 N; contact

[0091] 2. Detect the displacement deviation ΔS = 0.3 mm and the angular deviation Δθ = 3°;

[0092] 3. Substitute the parameters α = 0.12, β = 0.8, γ = 0.15, k v slot = 1.2, N tol = 8;

[0093] 4. Calculate to obtain:

[0094]

[0095] 5. The controller 500 automatically adjusts the rotational speed of the servo motor and the propulsion speed of the hydraulic cylinder to complete precise positioning within 0.83 seconds.

[0096] Technical effects:

[0097] 1. Nonlinear compensation: The cube root term compensates for the influence of pressure mutation on positioning, and the exponential term eliminates angular deviation;

[0098] 2. Adaptive adjustment: When ΔS > 3δ tol , the logarithmic term dominates to achieve rapid rough positioning; when ΔS < δ tol , the exponential term dominates to achieve precise fine-tuning;

[0099] 3. Multi-parameter coupling: Integrate the three-degree-of-freedom parameters of pressure, displacement, and angular deviation, significantly improving the accuracy compared with traditional PID control.

[0100] Working principle;

[0101] First, static molds 201 of different models are connected to the corresponding turntable 200 through external threads 204 and internal thread grooves 207 on the surface of the turntable 200. At the same time, according to actual production requirements, in the circular hole 403 at the top of the mounting plate 401 in the U-shaped frame 400, a fixed rod 300 with a moving mold 101 of different models is inserted, so that the moving mold 101 is located in the circular groove 408. The fixed rod 300 at the top of the moving mold 101 is inserted into the inner cavity of the circular hole 403, and the strong magnet 410 at the bottom of the circular groove 408 attracts the head of the moving mold 101;

[0102] Subsequently, turn on the controller 500 and the operation screen 501, and set the parameters of the controller 500 through the operation screen 501, including selecting the required types of the moving mold 101 and the stationary mold 201;

[0103] When it is necessary to replace the moving mold 101, input the model information of the required moving mold 101 on the operation screen 501. After the controller 500 in the control component receives the instruction, it starts the second motor 407 in the propulsion component. The second motor 407 drives the lead screw 405 to rotate. When the lead screw 405 rotates, the mounting plate 401 slides axially along the lead screw 405 within the U-shaped frame 400. During the movement of the mounting plate 401, the second Hall sensor 402 embedded therein gradually approaches the second induction block 504 within the fixed ring 503 at the end of the L-shaped plate 502 on one inner wall of the U-shaped frame 102. When the circular hole 403 without the moving mold 101 inside moves directly below the telescopic end of the hydraulic cylinder 103, the corresponding second Hall sensor 402 senses the second induction block 504 and feeds back a signal to the controller 500. After receiving the signal, the controller 500 controls the second motor 407 to stop rotating;

[0104] Subsequently, the controller 500 controls each group of hydraulic cylinders 103 to move downward by a certain distance, so that the end of the moving mold 101 fixed to its telescopic end is inserted into the inner cavity of the circular groove 408. At this time, the controller 500 controls the electric push rod 309 in the quick-release component to start. The telescopic end of the electric push rod 309 retracts, driving the push block 308 to move backward within the strip-shaped hole 304. When the push block 308 moves, it drives the front ends of the two strip-shaped plates 306 to rotate outward through the connecting bar 307, so that the clamping bar 312 withdraws from the clamping groove 310 at the neck of the fixed rod 300, thereby releasing the restriction on the fixed rod 300;

[0105] Subsequently, the controller 500 controls the telescopic end of the hydraulic cylinder 103 to retract, and at the same time, controls the servo motor 203 to rotate, so as to move the required moving mold 101 forward. When the required moving mold 101 moves directly below the telescopic end of the hydraulic cylinder 103, the corresponding second Hall sensor 402 senses the second induction block 504 and feeds back a signal to the controller 500. After receiving the signal, the controller 500 controls the second motor 407 to stop rotating, and the required moving mold 101 has moved into place;

[0106] At this time, the controller 500 controls the telescopic end of the hydraulic cylinder 103 to extend, so as to insert the fixing rod 300 at the top of the moving die 101 into the inner cavity of the fixing cylinder 302. When the pressure sensor 505 embedded in the inner wall of the top of the fixing cylinder 302 detects a certain value, the controller 500 controls the telescopic end of the electric push rod 309 to extend, driving the push block 308 to move forward. During the movement of the push block 308, the front ends of the two sets of strip plates 306 are driven by the connecting strip 307 to rotate inward, so that the clamping strip 312 is inserted into the clamping groove 310 at the neck of the fixing rod 300 again, thereby fixing the fixing rod 300, and thus completing the replacement of the moving die 101;

[0107] After the replacement of the moving die 101 is completed, the controller 500 starts the servo motor 203 at the bottom of the mounting frame 202 below the corresponding turntable 200. The servo motor 203 drives the turntable 200 to rotate, and the first Hall sensor 208 embedded on the surface of the turntable 200 rotates accordingly. When the first Hall sensor 208 corresponding to the selected static die 201 rotates to the relative position with the first induction block 213 at the bottom of the workbench 100, the first Hall sensor 208 senses the first induction block 213 and feeds back a signal to the controller 500. After receiving the signal, the controller 500 controls the servo motor 203 to stop rotating. At this time, the selected static die 201 has rotated to the coaxial position with the moving die 101;

[0108] Immediately afterwards, the staff places the heated bolts into the inner cavity of the static die 201, and then starts the hydraulic cylinder 103. The telescopic end of the hydraulic cylinder 103 drives the fixing rod 300 and the moving die 101 to move downward, and cooperates with the static die 201 at the lower coaxial position to forge the bolt blank placed on the static die 201. At the same time, during the forging process, parameters such as the pressure and stroke of the hydraulic cylinder 103 can be adjusted through the controller 500 according to actual needs;

[0109] After the forging is completed, the telescopic end of the hydraulic cylinder 103 rises, driving the moving die 101 to leave the static die 201. The spring 212 in the mounting pipe 205 at the bottom of the static die 201 pushes the sliding disk 211 and the guide rod 210 to move upward. The push disk 209 at the top of the guide rod 210 pushes the forged bolts out of the inner cavity of the static die 201. Immediately afterwards, the staff removes the forged bolts, completing one working cycle. After that, the above steps can be repeated to forge the next bolt;

[0110] When the spring 212 undergoes mechanical aging after long-term use, unscrew the threaded cover 206, thereby exposing the mouth of the mounting pipe 205. Immediately afterwards, remove the aged spring 212, replace the spring 212, and finally tighten the threaded cover 206.

[0111] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-station forging equipment for metal bolts with rapid die change, characterized in that: include: A workbench (100), wherein a U-shaped frame (102) is fixedly mounted on the top of the workbench (100); Hydraulic cylinders (103), the hydraulic cylinders (103) are multiple groups, the multiple groups of hydraulic cylinders (103) are fixedly installed on the top of the U-shaped frame (102) from left to right, the telescopic ends of the multiple groups of hydraulic cylinders (103) are connected to fixed rods (300) through quick-release components, and the bottoms of the fixed rods (300) are fixedly connected to a movable die (101) for bolt forging; A storage assembly, the storage assembly being arranged at the rear side of the U-shaped frame (102), and the storage assembly being used to store movable molds (101) of different models; A propulsion assembly, which is disposed at the rear side of the storage assembly and is used to push the storage assembly; Rotary assemblies, the rotary assemblies are in multiple groups, and the multiple groups of rotary assemblies are respectively rotatably connected to the surface of the workbench (100) and are in corresponding positions with the hydraulic cylinders (103) on the corresponding sides; The rotary assembly comprises a rotating disk (200) and a plurality of groups of static molds (201) of different models, wherein the rotating disk (200) is rotatably connected to the surface of the workbench (100), and the plurality of groups of static molds (201) are arranged in a circular array and are respectively connected to the surface of the rotating disk (200) through detachable components; A control assembly is installed on one side of the U-shaped frame (102). The propulsion assembly and the quick-release assembly are both controlled by the control assembly. The control assembly can control the propulsion assembly to push the required model of the movable mold (101) to the position directly below the telescopic end of the hydraulic cylinder (103) according to the needs. The control assembly can control the rotary assembly to rotate the matching static mold (201) to a coaxial position with the movable mold (101) according to the model of the movable mold (101).

2. The multi-station forging equipment for metal bolts with rapid die change according to claim 1, characterized in that: The quick-release assembly comprises a slot (310) provided on the neck of each set of the fixing rods (300); the head of each set of the fixing rods (300) is sleeved with a fixing tube (302); the inner cavity of each set of the fixing tubes (302) is provided with an anti-dropping assembly that is snapped into the inner cavity of the slot (310) to fix the fixing rods (300) and prevent them from falling off; the top of each set of the fixing tubes (302) is respectively fixedly connected to the telescopic end of the hydraulic cylinder (103) on the corresponding side; The storage assembly is fixedly mounted on a U-shaped frame (400) at the rear side of the U-shaped frame (102); the inner cavity of the U-shaped frame (400) is slidably connected to a mounting plate (401); a plurality of groups of circular holes (403) for the fixing rods (300) to be inserted are provided on the top of the mounting plate (401); the number of the plurality of groups of circular holes (403) in the same row is the same as the number of the hydraulic cylinders (103) and is aligned with the hydraulic cylinders (103) on the corresponding side; the mounting plate (401) is provided with a plurality of circular holes (403) for the fixing rods (300) to be inserted into the mounting plate (401); 01) and are provided with a circular groove (408) at the bottom of each group of circular holes (403); one side of each group of the circular grooves (408) is connected to an L-shaped strip (409) through a fixing piece; the top of each group of the L-shaped strips (409) is fixedly connected to the bottom of the mounting plate (401); when the fixing rod (300) is inserted into the inner cavity of the circular hole (403), the movable mold (101) fixed at its end is inserted into the inner cavity of the circular groove (408); The propulsion assembly comprises a circular hole (404) opened in the middle of the mounting plate (401), the inner cavity of the circular hole (404) is rotatably connected to a lead screw (405), the surface of the lead screw (405) is threadedly connected to a nut seat (406), the nut seat (406) is fixedly inserted into the rear side of the circular hole (404), the rear side of the U-shaped frame (400) is fixedly installed with a second motor (407), and the output shaft of the second motor (407) is keyed to the end of the lead screw (405); A mounting frame (202) is provided at the bottom of the workbench (100) and below each group of the turntables (200); the top of each group of the mounting frames (202) is fixedly connected to the bottom surface of the workbench (100); the bottom of each group of the mounting frames (202) is fixedly connected to a servo motor (203); the output shaft of each group of the servo motor (203) rotates upward, passes through the mounting frame (202), and is key-connected to the corresponding side turntable (200); The detachable component comprises an internal thread groove (207) which is opened on the surface of the rotating disk (200) and is located at a corresponding position with each group of static dies (201); the surface of each group of static dies (201) is fixedly provided with an external thread (204) which is compatible with the internal thread groove (207); each group of static dies (201) is threadedly connected to the inner cavity of the internal thread groove (207) at a corresponding position through the external thread (204); and the bottom of each group of static dies (201) is provided with a pushing component for pushing the forged bolt out of the inner cavity of the static die (201) upward.

3. The multi-station forging equipment for metal bolts with rapid die change according to claim 2 is characterized in that: The control assembly comprises a controller (500) and an operation screen (501) fixedly mounted on one side of the U-shaped frame (102); an output end of the operation screen (501) is electrically connected to a signal input end of the controller (500) through a wire; the second motor (407), the servo motor (203) and the hydraulic cylinder (103) are all controlled by the controller (500); the controller (500) is electrically connected to a positioning module A and a positioning module B through wires, respectively; the positioning module A is used to provide feedback to the controller (500) when the required movable mold (101) moves to the position directly below the telescopic end of the hydraulic cylinder (103); and the positioning module B is used to provide feedback to the controller (500) when the static mold (201) rotates to a coaxial position with the movable mold (101).

4. The multi-station forging equipment for metal bolts with rapid die change according to claim 3 is characterized in that: The positioning module A comprises a plurality of groups of second Hall sensors (402), wherein the plurality of groups of the second Hall sensors (402) are respectively inlaid on the top right side of the mounting plate (401) and aligned with the center line of the corresponding side circular hole (403); an L-shaped plate (502) is fixedly mounted on the inner wall of one side of the U-shaped frame (102) and at the same axial position as the telescopic end of the hydraulic cylinder (103); a fixing ring (503) is fixedly connected to the end of the L-shaped plate (502); and a second sensing block (504) for cooperating with the second Hall sensor (402) is disposed in the inner cavity of the fixing ring (503); The positioning module B is embedded in the surface of the turntable (200) and is located at a first Hall sensor (208) corresponding to each group of static molds (201); a first sensing block (213) for cooperating with the first Hall sensor (208) is provided at the bottom of the workbench (100) and at a position on one side of each group of turntables (200); the first sensing block (213) and the axis center of the telescopic end of the hydraulic cylinder (103) are located in a horizontal plane.

5. The multi-station forging equipment for metal bolts with rapid die change according to claim 2, characterized in that: The anti-slip assembly comprises a strip hole (304) which is opened on the front side of the fixed cylinder (302) and is at the same height as the card slot (310); a push block (308) is slidably connected to the inner cavity of the strip hole (304); the front side of the push block (308) is arranged in an arc shape corresponding to the fixed rod (300); a fixing strip (311) which is adapted to the inner cavity of the card slot (310) is fixedly installed on the front side of the push block (308); an electric push rod (309) is fixedly installed on the front side of the fixed cylinder (302); the telescopic end of the electric push rod (309) extends to the inner cavity of the strip hole (304) and is fixedly connected to the end of the push block (308); the electric push rod (309) is controlled by a controller (500); strip grooves (303) are opened on both sides of the fixed cylinder (302); and the inner cavities of the two groups of strip grooves (303) are provided with a snap-on assembly; The top inner wall of the fixed cylinder (302) is inlaid with a pressure sensor (505), the detection end of the pressure sensor (505) is arranged in a direction, and the signal output end of the pressure sensor (505) is electrically connected to the signal input end of the controller (500) through a wire.

6. The multi-station forging equipment for metal bolts capable of rapid die change according to claim 5, characterized in that: The snap-on assembly comprises a connecting rod (305) arranged in the inner cavity at the rear side of the two groups of the strip grooves (303); the surfaces of the two groups of the connecting rods (305) are rotatably sleeved with strip plates (306); the middle parts of the opposite sides of the two groups of the strip plates (306) are fixedly connected with snap-on strips (312) adapted to the slots (310); the opposite ends of the front sides of the two groups of the strip plates (306) are rotatably connected with connecting strips (307); the opposite side ends of the two groups of the connecting strips (307) are rotatably connected to the two ends of the front side of the push block (308); when the push block (308) moves forward, the front ends of the two groups of the strip plates (306) are driven by the connecting strip (307) to rotate inward at the same time, so that the snap-on strips (312) fixed on the surface can pass through the strip groove (303) and be snap-on to the inner cavity of the slot (310).

7. The multi-station forging equipment for metal bolts capable of rapid die change according to claim 5, characterized in that: The mouth of each group of the fixed tubes (302) is fixedly connected to a guide tube (301), and the guide tube (301) is arranged in a trumpet shape, with the large end of the guide tube (301) facing downward.

8. The multi-station forging equipment for metal bolts with rapid die change according to claim 2, characterized in that: The fixing member comprises a slot (413) opened at the lower end of each group of the L-shaped strips (409), an insert block (411) is inserted into the inner cavity of each group of the slots (413), and each group of the insert blocks (411) are respectively fixedly connected to the surface of the circular groove (408) at the corresponding position, and a fixing bolt (412) is provided at the lower end of each group of the L-shaped plates (502), and each group of the fixing bolts (412) are respectively threaded upward to penetrate the L-shaped plate (502) and the insert block (411) at the corresponding position; The bottom of each group of circular grooves (408) is inlaid with a strong magnet (410).

9. The multi-station forging equipment for metal bolts capable of rapid die change according to claim 2, characterized in that: The ejection assembly comprises a mounting tube (205) fixedly connected to the bottom of each group of static molds (201); a spring (212) is provided in the inner cavity of each group of mounting tubes (205); a sliding plate (211) is provided in the inner cavity of each group of mounting tubes (205) and located above the spring (212); a guide rod (210) is fixedly connected to the top of the sliding plate (211); each group of guide rods (210) extends upward to the inner cavity of the corresponding side static mold (201) and is fixedly connected to a push plate (209); and a sealing assembly for sealing the mouth to prevent the spring (212) from falling off is provided at the lower mouth of each group of mounting tubes (205).

10. The multi-station forging equipment for metal bolts capable of rapid die change according to claim 9, characterized in that: The closure assembly comprises a threaded cover (206) threadedly connected to the lower opening of the mounting tube (205).

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