A multi-station forging equipment for metal bolts with quick die change

Abstract

The present invention discloses a multi-station forging equipment for metal bolts with rapid die change, comprising a workbench, a C-shaped frame fixedly mounted on the top of the workbench, a storage assembly arranged at the rear side of the C-shaped frame, the storage assembly being used to store movable dies of different models; a propulsion assembly arranged at the rear side of the storage assembly, the propulsion assembly being used to push the storage assembly; a plurality of rotary assemblies, the plurality of rotary assemblies being rotatably connected to the surface of the workbench and being in corresponding positions with the hydraulic cylinders on the corresponding sides; a control assembly, the control assembly being mounted on one side of the C-shaped frame, and through the arrangement of the storage assembly, the propulsion assembly, the rotary mechanism and the control assembly, the storage assembly pre-stocks a plurality of movable dies, the rotary assembly is equipped with a plurality of static dies, and the control assembly is controlled to quickly complete the switching between the movable and static dies, thereby greatly shortening the production preparation time compared to manual die replacement, and solving the problem of low efficiency of the original equipment caused by manual die replacement.

Description

Technical Field

[0001] The invention relates to the technical field of multi-station forging equipment for metal bolts capable of rapid die change, in particular to multi-station forging equipment for metal bolts capable of rapid die change. Background Art

[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 nuts or components with internal threads, it generates fastening force to ensure the firmness and stability of the connection. It is widely used in many fields such as construction, machinery, automobiles, aerospace, etc.

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

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

[0005] The object of the present invention is to provide a multi-station forging device for metal bolts capable of rapid die change, so as to solve the problems raised in the above background technology.

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

[0007] A multi-station forging device for metal bolts with rapid die change, comprising a workbench, a C-shaped frame fixedly mounted on the top of the workbench; a hydraulic cylinder, the hydraulic cylinders are in multiple groups, and the multiple groups of hydraulic cylinders are fixedly mounted on the top of the C-shaped frame from left to right, the telescopic ends of the multiple groups of hydraulic cylinders are connected to fixed rods through quick-release components, and the bottoms of the fixed rods are fixedly connected to movable dies for bolt forging; a storage component, the storage component is arranged at the rear side of the C-shaped frame, and the storage component is used to store movable dies of different models; a propulsion component, the propulsion component is arranged at the rear side of the storage component, and the propulsion component is used to push the storage component; a rotary component, the rotary component is in multiple groups, and the multiple groups of The rotary components are rotatably connected to the surface of the workbench and are in corresponding positions with the hydraulic cylinders on the corresponding sides; wherein, the rotary components include a turntable and multiple groups of static molds of different models, the turntable is rotatably connected to the surface of the workbench, the multiple groups of static molds are arranged in a circular array and are respectively connected to the turntable surface through detachable components; the control component, the control component is installed on one side of the U-shaped frame, the propulsion component and the quick-release component are both controlled by the control component, the control component can control the propulsion component as needed to push the required model of dynamic mold to the bottom of the telescopic end of the hydraulic cylinder, and the control component can control the rotary component according to the dynamic model number to rotate the matching static mold to a coaxial position with the dynamic mold.

[0008] As a preferred technical solution, the quick-release assembly includes a slot provided on the neck of each set of the fixing rods, a fixing cylinder is sleeved on the head of each set of the fixing rods, and an anti-falling assembly is provided in the inner cavity of each set of the fixing cylinders, which is engaged with the inner cavity of the slot to fix the fixing rods and prevent them from falling off. The top of each set of the fixing cylinders is respectively fixedly connected to the telescopic end of the hydraulic cylinder on the corresponding side.

[0009] The storage assembly is fixedly mounted on the U-shaped frame at the rear side of the U-shaped rack, and the inner cavity of the U-shaped frame is slidably connected to a mounting plate, and the top of the mounting plate is provided with a plurality of groups of circular holes for inserting fixing rods, and the number of the plurality of groups of circular holes in the same row is consistent with the number of hydraulic cylinders and is aligned with the hydraulic cylinders on the corresponding side, and a circular groove is provided at the bottom of the mounting plate and below each group of circular holes, and one side of each group of the circular grooves is connected to an L-shaped strip via a fixing piece, and the top of each group of the L-shaped strips is fixedly connected to the bottom of the mounting plate, and when the fixing rod is inserted into the inner cavity of the circular hole, the movable mold fixed at its end is inserted into the inner cavity of the circular groove;

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

[0011] A mounting bracket is provided at the bottom of the workbench and below each set of the turntables. The top of each set of the mounting brackets is fixedly connected to the bottom surface of the workbench. The bottom of each set of the mounting brackets is fixedly connected to a servo motor. The output shaft of each set of the servo motors rotates upward, passes through the mounting brackets, and is key-connected to the corresponding side turntable.

[0012] The detachable component includes an internal thread groove opened on the surface of the turntable and located at a corresponding position with each group of static dies. The surface of each group of static dies is fixedly provided with an external thread that is compatible with the internal thread groove. Each group of static dies is connected to the inner cavity of the internal thread groove at the corresponding position through the external thread. The bottom of each group of static dies is provided with a pushing component for pushing the forged bolts upward into the inner cavity of the static die.

[0013] As a preferred technical solution, the control component includes a controller and an operation screen fixedly mounted 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 the positioning module A and the positioning module B through wires. The positioning module A is used to provide feedback to the controller when the required movable mold moves to directly below the telescopic end of the hydraulic cylinder. The positioning module B is used to provide feedback to the controller when the static mold rotates to the coaxial position of the movable mold.

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

[0015] The positioning module B is embedded in the surface of the turntable and is located at the first Hall sensor corresponding to the position of each group of static molds. The bottom of the workbench and the position on one side of each group of turntables are provided with a first sensing block for cooperating with the first Hall sensor. The first sensing block and the axis center of the telescopic end of the hydraulic cylinder are in a horizontal plane.

[0016] As a preferred technical solution, the anti-slip assembly includes a strip hole opened on the front side of the fixed cylinder and at the same height as the card slot, the inner cavity of the strip hole is slidably connected to a push block, the front side of the push block is arranged in an arc shape corresponding to the fixed rod, the front side of the push block is fixedly installed with a fixing strip adapted to the inner cavity of the card slot, the front side of the fixed cylinder is fixedly installed with an electric push rod, the telescopic end of the electric push rod extends to the inner cavity of the strip hole and is fixedly connected to the end of the push block, the electric push rod is controlled by a controller, both sides of the fixed cylinder are provided with strip grooves, and the inner cavities of the two groups of strip grooves are provided with a clamping assembly;

[0017] The top inner wall of the fixing cylinder is inlaid with a pressure sensor, the detection end of the pressure sensor is arranged in a direction, and the signal output end of the pressure sensor is electrically connected to the signal input end of the controller through a wire.

[0018] As a preferred technical solution, the clamping assembly includes a connecting rod arranged in the inner cavity on the rear side of the two groups of strip grooves, and the surfaces of the two groups of connecting rods are rotatably sleeved with strip plates, and the middle parts of the opposite sides of the two groups of strip plates are fixedly connected with clamping strips adapted to the slots, and the opposite ends of the front sides of the two groups of strip plates are rotatably connected with connecting strips, and the opposite side ends of the two groups of 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 ends of the two groups of strip plates are driven by the connecting strip to rotate inward at the same time so that the clamping strips fixed on the surface can pass through the strip groove and be clamped in the inner cavity of the slot.

[0019] As a preferred technical solution, the mouth of each group of the fixed cylinders is fixedly connected to a guide tube, the guide tube is arranged in a trumpet shape, and the large end of the guide tube is arranged downward.

[0020] As a preferred technical solution, the fixing member includes a slot opened at the lower end of each group of L-shaped strips, an insert is inserted into the inner cavity of each group of slots, and each group of inserts is fixedly connected to the surface of the circular groove at the corresponding position. The lower end of each group of L-shaped strips is provided with a fixing bolt, and each group of fixing bolts is threaded upward through the L-shaped strip and the insert at the corresponding position;

[0021] The bottom of each group of circular grooves is inlaid with a strong magnet.

[0022] As a preferred technical solution, the ejection assembly includes a mounting tube fixedly connected to the bottom of each group of static molds, the inner cavity of each group of the mounting tubes is provided with a spring, the inner cavity of each group of the mounting tubes and the upper part of the spring are provided with a sliding plate, the top of the sliding plate is fixedly connected with a guide rod, each group of the guide rods extends upward to the inner cavity of the corresponding side static mold and is fixedly connected with a push plate, and the lower mouth of each group of the mounting tubes is provided with a closing assembly for closing the mouth to prevent the spring from falling off.

[0023] As a preferred technical solution, the closure assembly includes a threaded cover threadedly connected to the lower opening of the mounting tube.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention adopts the arrangement of a storage component, a propulsion component, a rotary mechanism, and a control component. The storage component pre-stocks a variety of movable molds, the rotary component is equipped with multiple sets of static molds, and the control component is controlled to quickly complete the switching between movable and static molds, thereby adapting to the diverse bolt forging needs. The same equipment can produce bolts of different specifications. Compared with manual mold replacement, the production preparation time is greatly shortened, solving the low efficiency problem caused by manual mold replacement in the original equipment.

[0026] 2. Through the setting of the control component, the controller of the present invention can accurately control the second motor to drive the lead screw, so as to realize the precise displacement of the movable mold driven by the mounting plate; at the same time, the servo motor is controlled to allow the turntable to drive the static mold to rotate quickly to the specified position. Under the unified scheduling of the controller, each device works closely together, thereby avoiding the time waste caused by the lack of coordination between devices. At the same time, there is no need to manually adjust the devices one by one, which greatly reduces the difficulty of operation.

[0027] 3. The present invention sets up positioning module A and positioning module B. Positioning module A uses the second Hall sensor to cooperate with the second sensing block, and positioning module B uses the first Hall sensor to cooperate with the first sensing block. In addition, the Hall sensor is sensitive and can accurately detect the position changes of the movable mold and the static mold, and promptly feed back the signal to the controller. Compared with other positioning methods, it has higher precision and reliability, ensuring the accuracy of mold switching and alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a multi-station forging device for metal bolts capable of rapid die change according to the present invention;

[0029] Figure 2 A structural diagram of another perspective of the present invention;

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

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

[0032] Figure 5 Schematic diagram of the structure of the spring of the present invention;

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

[0034] Figure 7 This is a structural diagram of the position of the strip groove of the present invention;

[0035] Figure 8 It is a structural schematic diagram of the opening position of the strip-shaped hole of the present invention;

[0036] Figure 9 It is a schematic cross-sectional structural diagram of the mounting plate of the present invention;

[0037] Figure 10 This is a schematic diagram of the structure of the L-shaped strip of the present invention;

[0038] Figure 11 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0039] Figure 12 Schematic diagram of the structure of the pressure sensor of the present invention.

[0040] In the picture:

[0041] 100. Workbench; 101. Moving mold; 102. C-shaped frame; 103. Hydraulic cylinder;

[0042] 200, turntable; 201, static mold; 202, mounting bracket; 203, servo motor; 204, external thread; 205, mounting tube; 206, threaded cover; 207, internal thread groove; 208, first Hall effect sensor; 209, push plate; 210, guide rod; 211, sliding plate; 212, spring; 213, first sensing block;

[0043] 300, fixing rod; 301, guide tube; 302, fixing cylinder; 303, strip groove; 304, strip hole; 305, connecting rod; 306, strip plate; 307, connecting strip; 308, push block; 309, electric push rod; 310, slot; 311, fixing strip; 312, connecting strip;

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

[0045] 500, controller; 501, operation screen; 502, L-shaped plate; 503, fixing ring; 504, second sensing block; 505, pressure sensor. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] See also Figure 1-12 The present embodiment provides a multi-station forging equipment for metal bolts with rapid die change, comprising a workbench 100, a U-shaped frame 102 fixedly mounted on the top of the workbench 100; a hydraulic cylinder 103, the hydraulic cylinder 103 being multiple groups, the multiple groups of hydraulic cylinders 103 being fixedly mounted on the top of the U-shaped frame 102 from left to right, the telescopic ends of the multiple groups of hydraulic cylinders 103 being connected to a fixed rod 300 through a quick-release assembly, the bottom of the fixed rod 300 being fixedly connected to a movable die 101 for bolt forging; a storage assembly, storing The storage assembly is arranged at the rear side of the U-shaped frame 102, and the storage assembly is used to store different types of movable molds 101; the propulsion assembly is arranged at the rear side of the storage assembly, and the propulsion assembly is used to push the storage assembly; the rotary assembly is a plurality of groups of rotary assemblies, and the plurality of groups of rotary assemblies are respectively connected to the surface of the workbench 100 and are in corresponding positions with the corresponding side hydraulic cylinders 103; wherein the rotary assembly includes a turntable 200 and a plurality of groups of static molds 201 of different models, and the turntable 200 is connected to the workbench 100 in a rotatable manner. , multiple groups of static dies 201 are arranged in a circular array and are respectively connected to the surface of the turntable 200 through detachable components; a control component, the control component is installed on one side of the U-shaped frame 102, and 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 movable die 101 to the bottom of the telescopic end of the hydraulic cylinder 103 as needed, and the control component can control the rotary component to rotate the matching static die 201 to a coaxial position with the movable die 101 according to the model of the movable die 101. Through the setting of the storage component, the propulsion component, the rotary mechanism and the control component, the storage component pre-stocks a variety of movable dies 101, the rotary component is equipped with multiple groups of static dies 201, and controls the control component to quickly complete the switching between the movable die 101 and the static die 201, thereby adapting to the diversified bolt forging needs, so that the same equipment can produce bolts of different specifications, and compared with manual mold replacement, the production preparation time is greatly shortened, solving the low efficiency problem caused by manual mold replacement of the original equipment.

[0048] The quick-release assembly includes a slot 310 formed on the neck of each set of fixing rods 300. The head of each set of fixing rods 300 is sleeved with a fixing cylinder 302. The inner cavity of each set of fixing cylinders 302 is provided with an anti-drop assembly that snaps into the inner cavity of the slot 310 to fix the fixing rod 300 and prevent it from falling off. The top of each set of fixing cylinders 302 is fixedly connected to the telescopic end of the corresponding side hydraulic cylinder 103.

[0049] The storage assembly is fixedly mounted on the 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. The top of the mounting plate 401 is provided with a plurality of groups of circular holes 403 for plugging in the fixing rods 300. The number of the plurality of groups of circular holes 403 in the same row is consistent with the number of hydraulic cylinders 103 and is aligned with the hydraulic cylinders 103 on the corresponding side. The bottom of the mounting plate 401 and below each group of circular holes 403 are provided with circular grooves 408. One side is connected to an L-shaped strip 409 via a fixing piece. The top of each set 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 movable mold 101 fixed at its end is inserted into the inner cavity of the circular groove 408. Through the arrangement of the circular groove 408, the mounting plate 401 in the U-shaped frame 400 passes through the circular hole 403 and the circular groove 408, and different types of movable molds 101 are stored in order. The L-shaped strips and fixing pieces ensure that the movable mold 101 is firmly placed.

[0050] The propulsion assembly 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 mounted on the rear side of the U-shaped frame 400. The output shaft of the second motor 407 is keyed to the end of the lead screw 405. Through the configuration of the propulsion assembly, the second motor 407 drives the lead screw 405, causing the mounting plate 401 to slide within the U-shaped frame 400. The threaded fit between the nut seat 406 and the lead screw 405 allows for precise and controllable movement of the mounting plate 401, enabling the specific movable mold 101 to be precisely moved to the position directly below the telescopic end of the hydraulic cylinder 103, ensuring the accuracy of the movable mold 101 replacement position.

[0051] A mounting bracket 202 is provided at the bottom of the workbench 100 and below each set of turntables 200. The top of each set of mounting brackets 202 is fixedly connected to the bottom surface of the workbench 100. The bottom of each set of mounting brackets 202 is fixedly connected to a servo motor 203. The output shaft of each set of servo motors 203 rotates upward, passes through the mounting bracket 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, rotating the matching static die 201 to a coaxial position with the movable die 101, thereby realizing rapid switching of the static die 201 and meeting the requirements of different bolt forging processes for die combinations.

[0052] The detachable components include an internal thread groove 207 opened on the surface of the turntable 200 and in 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 adapted to 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 the corresponding position through the external thread 204. The bottom of each group of static dies 201 is provided with a pushing component for pushing the forged bolts upward out of the inner cavity of the static die 201. Through the setting of the detachable components, the static die 201 is connected to the internal thread groove 207 of the turntable 200 through the external thread 204. The installation and disassembly are simple and convenient. When the static die 201 needs to be replaced when producing bolts of different specifications, the staff can complete the operation quickly, thereby improving the response speed of the equipment to different production tasks.

[0053] The control assembly includes a controller 500 and an operation screen 501 fixedly mounted 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 the positioning module A and the positioning module B through wires. 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. The positioning module B is used to provide feedback to the controller 500 when the static mold 2 01 rotates to the coaxial position of the movable mold 101 and provides feedback to the controller 500. Through the setting of the control component, the controller 500 can accurately control the second motor 407 to drive the screw 405, so as to realize the precise displacement of the movable mold 101 driven by the mounting plate 401; at the same time, the servo motor 203 is controlled to allow the turntable 200 to drive the static mold 201 to rotate quickly to the specified position. Under the unified dispatch of the controller 500, each device cooperates closely, thereby avoiding the time waste caused by the lack of coordination between devices. At the same time, there is no need to manually adjust the devices one by one, which greatly reduces the difficulty of operation.

[0054] The positioning module A includes several groups of second Hall effect sensors 402, which are respectively mounted on the top right side of the mounting plate 401 and aligned with the center lines of the corresponding side circular holes 403. An L-shaped plate 502 is fixedly mounted on the inner wall of one side of the U-shaped frame 102 at the same axial position as the telescopic end of the hydraulic cylinder 103. The end of the L-shaped plate 502 is fixedly connected to a fixing ring 503. The inner cavity of the fixing ring 503 is provided with a second sensing block 504 for cooperating with the second Hall effect sensor 402.

[0055] The positioning module B is embedded in the surface of the turntable 200 and is located at the first Hall sensor 208 corresponding to the position of each group of static molds 201. The bottom of the workbench 100 and the position on the side of each group of turntables 200 are provided with a first sensing block 213 for cooperating with the first Hall sensor 208. The first sensing 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 to cooperate with the second sensing block 504, and the positioning module B uses the first Hall sensor 208 to cooperate with the first sensing block 213. In addition, the Hall sensor is sensitive and can accurately detect the position changes of the dynamic mold 101 and the static mold 201, and timely feedback the signal to the controller 500. Compared with other positioning methods, it has higher precision and reliability, and ensures the accuracy of mold switching and alignment.

[0056] The controller 500 may be a DSP controller 500 of model TMS320F2812, the pressure sensor 505 may be of Honeywell SS2 series, and the first Hall sensor 208 and the second Hall sensor 402 may be of model A3144E, SS495A, or UGN3503U.

[0057] The first Hall sensor 208 and the second Hall sensor 402 are electrically connected to the signal input terminal of the controller 500 through wires.

[0058] The first induction block 213 and the second induction block 504 are magnets.

[0059] The anti-slip component includes a strip hole 304 opened on the front side of the fixed cylinder 302 and at the same height as the card slot 310. The inner cavity of the strip hole 304 is slidably connected to a push block 308. The front side of the push block 308 is arranged in an arc shape corresponding to the fixed rod 300. The front side of the push block 308 is fixedly installed with a fixing strip 311 adapted to the inner cavity of the card slot 310. The front side of the fixed cylinder 302 is fixedly installed with an electric push rod 309. 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 push rod 308. At the end of the block 308, the electric push rod 309 is controlled by the controller 500. Bar grooves 303 are provided on both sides of the fixed cylinder 302. The inner cavities of the two sets of bar grooves 303 are provided with clamping components. Through the setting of the anti-drop assembly, the electric push rod 309 controls the push block 308 to make the fixing bar 311 cooperate with the clamping groove 310 of the fixing rod 300. During the operation of the equipment, the fixing rod 300 is effectively prevented from falling off due to vibration, impact, etc., ensuring the stability of the movable mold 101 during the forging process, and ensuring production safety and product quality.

[0060] 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 set 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. Through the setting of the pressure sensor 505, the pressure sensor 505 on the top inner wall of the fixed cylinder 302 monitors the insertion depth and fixing status of the fixing rod 300 in real time. When the pressure value reaches the set range, it indicates that the fixing rod 300 is installed in place, and the controller 500 controls the electric push rod 309 to fix the fixing rod 300.

[0061] The clamping assembly includes a connecting rod 305 provided in the inner cavity on the rear side of the two groups of strip grooves 303. The surfaces of the two groups of connecting rods 305 are rotatably sleeved with strip plates 306. The middle parts of the opposite sides of the two groups of strip plates 306 are fixedly connected with a clamping strip 312 adapted to the slot 310. The opposite ends of the front sides of the two groups of strip plates 306 are rotatably connected with connecting strips 307. The opposite side ends of the two groups 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 is driven by the connecting strip 307. The front ends of the two groups of strip plates 306 rotate inward at the same time so that the surface-fixed snap-in strips 312 can pass through the strip grooves 303 and snap into the inner cavity of the snap-in slots 310. Through the setting of the snap-in assembly, the push block 308 drives the two groups of strip plates 306 to rotate through the connecting strips 307, so that the snap-in strips 312 cooperate with the snap-in slots 310. In addition, the two groups of snap-in strips 312 act at the same time, which increases the force area of ​​the fixing rod 300 when it is fixed, improves the fixing effect, and effectively prevents the fixing rod 300 from loosening or falling off during the operation of the equipment.

[0062] Among them, the mouth of each set of fixed cylinders 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 arranged downward. Through the arrangement of the guide tube 301, the trumpet-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, so that 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 enter accurately.

[0063] The fixing members include slots 413 formed at the lower ends of each set of L-shaped strips 409. Inserts 411 are inserted into the inner cavities of each set of slots 413. Each set of inserts 411 is fixedly connected to the surface of the corresponding circular groove 408. A fixing bolt 412 is provided at the lower end of each set of L-shaped strips 409. Each set of fixing bolts 412 is threaded upwardly through the L-shaped strip 409 and the corresponding inserts 411.

[0064] The bottom of each group of circular grooves 408 is inlaid with a strong magnet 410. Through the setting of the fixing parts, the L-shaped bar 409 is connected to the circular groove 408 through the slot 413, the plug block 411 and the fixing bolt 412, which provides a stable support for the movable mold 101 and facilitates the separation of the two groups, thereby improving the convenience of replacing the circular grooves 408. At the same time, the strong magnet 410 at the bottom of the circular groove 408 increases the attraction to the movable mold 101, further improving the stability of the movable mold 101 during storage and movement, ensuring that the movable mold 101 will not be displaced or shaken during the operation of the equipment, and ensuring the accuracy of replacement of the movable mold 101.

[0065] Among them, the ejection component includes a mounting tube 205 fixedly connected to the bottom of each group of static molds 201, and the inner cavity of each group of mounting tubes 205 is provided with a spring 212, and the inner cavity of each group of mounting tubes 205 and the upper part of the spring 212 are provided with a sliding disk 211, and the top of the sliding disk 211 is fixedly connected with a guide rod 210, and each group of guide rods 210 extends upward to the inner cavity of the corresponding side static mold 201 and is fixedly connected with a push plate 209, and the lower mouth of each group of mounting tubes 205 is provided with a closing component for sealing the mouth to prevent the spring 212 from falling off. Through the setting of the ejection component, the ejection component composed of the spring 212, sliding disk 211, guide rod 210 and push plate 209 in the mounting tube 205 can quickly push the bolt out of the inner cavity of the static mold 201 after forging is completed. The elastic potential energy of the spring 212 is converted into the thrust of the guide rod 210, and the unloading process is efficient and stable, which reduces the labor intensity of manual unloading and improves production efficiency.

[0066] Among them, the closing component includes a threaded cover 206 that is threadedly connected to the lower mouth of the mounting tube 205. Through the setting of the threaded cover 206, the threaded cover 206 serves as a closing component to prevent the spring 212 from falling off during normal production, thereby ensuring the normal operation of the ejection component. At the same time, when the spring 212 needs to be replaced, the mounting tube 205 can be opened by simply unscrewing the threaded cover 206, which is simple and convenient to operate.

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

[0068]

[0069] in:

[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 of the turntable 200 and the target angle;

[0074] N slot is the total number of static mold stations on 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 mold coordinates v ;

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

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

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

[0082] e) According to v=ΔS / (k v ·T sync ) controlling the speed of the second motor 407;

[0083] f) According to ω=Δθ / (k ω ·T sync ) controlling the speed of the servo motor 203;

[0084] g) When ΔS≤δ tol When Δθ≤0.5°, positioning is determined to be complete.

[0085] The dynamic characteristic coefficient is determined by the following calibration process:

[0086] 1. At ΔS=3δ tol The pressure cube root dominant mode is activated when , where v max is the maximum safe speed, F crash Pressure threshold for collision protection;

[0087] 2. At ΔS=0.5δ tol Switch to exponential compensation mode when , where ω max

[0088] is the maximum angular velocity of the turntable, θ erris the maximum permissible angular deviation;

[0089] The γ value is calculated based on the inertia characteristics of the turntable 200. Dynamic adjustment, where J is the turntable moment of inertia, R is the turntable radius, m mold The quality of static mold 201;

[0090] For example, when you need to align the movable mold No. 3 with the static mold No. 5:

[0091] 1. The controller 500 reads the current pressure value F contact =850N;

[0092] 2. Detection displacement deviation ΔS = 0.3mm, angle deviation Δθ = 3°;

[0093] 3. Substitute the parameters α=0.12, β=0.8, γ=0.15, k v =1.2,N slot =8;

[0094] 4. Calculate:

[0095]

[0096] 5. The controller 500 automatically adjusts the servo motor speed and hydraulic cylinder propulsion speed to achieve precise positioning within 0.83 seconds.

[0097] Technical effects:

[0098] 1. Nonlinear compensation: The cube root term compensates for the influence of pressure mutation on positioning, and the exponential term eliminates angle deviation;

[0099] 2. Adaptive adjustment: when ΔS>3δ tol When ΔS<

[0100] δ tol When , the exponential term dominates to achieve precise fine-tuning;

[0101] 3. Multi-parameter coupling: The integration of three degrees of freedom parameters, namely pressure, displacement and angle deviation, significantly improves the control accuracy compared with traditional PID.

[0102] Working principle;

[0103] First, different types of static molds 201 are connected to the internal thread groove 207 on the surface of the turntable 200 via the external thread 204 and installed on the corresponding turntable 200. At the same time, according to actual production needs, the fixing rods 300 with different types of movable molds 101 are inserted into the circular hole 403 at the top of the mounting plate 401 in the U-shaped frame 400. The movable mold 101 is positioned in the circular groove 408. The fixing rod 300 at the top of the movable mold 101 is inserted into the inner cavity of the circular hole 403. The strong magnet 410 at the bottom of the circular groove 408 attracts the head of the movable mold 101.

[0104] Then, the controller 500 and the operation screen 501 are turned on, and the parameters of the controller 500 are set through the operation screen 501, including selecting the required models of the movable mold 101 and the static mold 201;

[0105] When the movable mold 101 needs to be replaced, the required model information of the movable mold 101 is input on the operation screen 501. After receiving the instruction, the controller 500 in the control assembly starts the second motor 407 in the propulsion assembly. 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 in the U-shaped frame 400. During the movement of the mounting plate 401, the second Hall sensor 402 embedded thereon gradually approaches the second sensing block 504 in the fixing ring 503 at the end of the L-shaped plate 502 on the inner wall of one side of the U-shaped frame 102. When the circular hole 403 without the movable mold 101 inside moves to the position directly below the telescopic end of the hydraulic cylinder 103, the corresponding second Hall sensor 402 senses the second sensing 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.

[0106] Then, the controller 500 controls each group of hydraulic cylinders 103 to move downward to a certain distance, so that the end of the movable mold 101 fixed at 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 assembly to start, and the telescopic end of the electric push rod 309 retracts, driving the push block 308 to move backward in the strip hole 304. When the push block 308 moves, it drives the front ends of the two groups of strip plates 306 to rotate outward through the connecting strip 307, so that the clamping strip 312 withdraws from the clamping groove 310 on the neck of the fixed rod 300, thereby releasing the restriction on the fixed rod 300.

[0107] Then, 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, thereby moving the required movable mold 101 forward. When the required movable mold 101 moves to just below the telescopic end of the hydraulic cylinder 103, the corresponding second Hall sensor 402 senses the second sensing 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 movable mold 101 has been moved into place.

[0108] At this time, the controller 500 controls the telescopic end of the hydraulic cylinder 103 to extend, thereby inserting the fixed rod 300 at the top of the movable mold 101 into the inner cavity of the fixed cylinder 302. When the pressure sensor 505 embedded in the inner wall of the top of the fixed 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 groups of strip plates 306 are driven to rotate inward through the connecting strip 307, so that the clamping strip 312 is clamped into the clamping groove 310 on the neck of the fixed rod 300 again, thereby fixing the fixed rod 300, thereby completing the replacement of the movable mold 101.

[0109] When the movable mold 101 is replaced, 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 mold 201 rotates to a position relative to the first sensing block 213 at the bottom of the workbench 100, the first Hall sensor 208 senses the first sensing 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 mold 201 has rotated to a coaxial position with the movable mold 101.

[0110] Then, the staff places the heated bolt into the inner cavity of the static die 201 and then activates the hydraulic cylinder 103. The telescopic end of the hydraulic cylinder 103 drives the fixed rod 300 and the movable die 101 to move downward, cooperating with the static die 201 in the coaxial position below to forge the bolt blank placed on the static die 201. At the same time, during the forging process, the pressure, stroke and other parameters of the hydraulic cylinder 103 can be adjusted according to actual needs through the controller 500.

[0111] When forging is completed, the telescopic end of the hydraulic cylinder 103 rises, driving the movable die 101 away from the static die 201. The spring 212 in the mounting tube 205 at the bottom of the static die 201 pushes the sliding plate 211 and the guide rod 210 upward. The push plate 209 on the top of the guide rod 210 pushes the forged bolt out of the inner cavity of the static die 201. Then, the staff removes the forged bolt, completing a working cycle. After that, the above steps can be repeated to forge the next bolt.

[0112] When the spring 212 is mechanically aged due to long-term use, the threaded cap 206 is unscrewed to expose the mouth of the mounting tube 205, and the aged spring 212 is then removed and replaced, and the threaded cap 206 is finally tightened.

[0113] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 component, the storage component being arranged on the rear side of the U-shaped frame (102), and the storage component being used to store movable molds (101) of different models; A propulsion assembly, the propulsion assembly being arranged at the rear side of the storage assembly and being used to push the storage assembly; Rotary assemblies, the rotary assemblies being in multiple groups, the multiple groups of rotary assemblies being rotatably connected to the surface of the workbench (100) and being in corresponding positions with the hydraulic cylinders (103) on the corresponding sides; The rotary assembly comprises a turntable (200) and a plurality of groups of static molds (201) of different models, wherein the turntable (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 turntable (200) through detachable components; A control component 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 movable mold (101) to the position directly below the telescopic end of the hydraulic cylinder (103) according to the need. The control component can control the rotary component 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 includes a clamping groove (310) provided on the neck of each set of the fixing rods (300), a fixing cylinder (302) is sleeved on the head of each set of the fixing rods (300), an anti-falling assembly is provided in the inner cavity of each set of the fixing cylinders (302) so as to be clamped in the inner cavity of the clamping groove (310) and fix the fixing rods (300) to prevent them from falling off, and the top of each set of the fixing cylinders (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). The top of the mounting plate (401) is provided with a plurality of groups of circular holes (403) for plugging the fixing rods (300). The number of the plurality of groups of circular holes (403) in the same row is consistent with 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 groups of circular holes (403) for plugging the fixing rods (300). 01) and is provided with a circular groove (408) below each group of circular holes (403), one side of each group of the circular grooves (408) is connected to an L-shaped strip (409) via a fixing member, and the top of each group of the L-shaped strips (409) is fixedly connected to the bottom of the mounting plate (401), and 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 includes 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 set of the turntables (200); the top of each set of the mounting frames (202) is fixedly connected to the bottom surface of the workbench (100); the bottom of each set of the mounting frames (202) is fixedly connected to a servo motor (203); the output shaft of each set 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 includes an internal thread groove (207) opened on the surface of the turntable (200) and 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) adapted to 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 the 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 upward out of the inner cavity of the static die (201).

3. The multi-station forging equipment for metal bolts with rapid die change according to claim 2, characterized in that: The control assembly includes a controller (500) fixedly mounted on one side of the U-shaped frame (102) and an operation screen (501), 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), and 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, 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 embedded in 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 provided 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 a position of each set 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 set of turntables (200). The first sensing block (213) and the axis 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 includes a strip hole (304) opened on the front side of the fixed cylinder (302) and at the same height as the card slot (310), the inner cavity of the strip hole (304) is slidably connected to a push block (308), the front side of the push block (308) is arranged in an arc shape corresponding to the fixed rod (300), the front side of the push block (308) is fixedly installed with a fixing strip (311) adapted to the inner cavity of the card slot (310), the front side of the fixed cylinder (302) is fixedly installed with an electric push rod (309), 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), both sides of the fixed cylinder (302) are provided with strip grooves (303), 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 with rapid die change according to claim 5, characterized in that: The clamping assembly includes a connecting rod (305) arranged in the rear inner cavity of the two groups of the strip grooves (303), the surfaces of the two groups of the connecting rods (305) are rotatably sleeved with a strip plate (306), the middle parts of the opposite sides of the two groups of the strip plates (306) are fixedly connected with a clamping strip (312) adapted to the clamping slot (310), the front opposite ends of the two groups of the strip plates (306) are rotatably connected with a connecting strip (307), the opposite side ends of the two groups of the connecting strip (307) are respectively rotatably connected to the two ends of the front side of the push block (308), and 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 clamping strip (312) fixed on the surface can pass through the strip groove (303) and be clamped in the inner cavity of the clamping slot (310).

7. The multi-station forging equipment for metal bolts with rapid die change according to claim 5, characterized in that: The mouth of each set of the fixed cylinders (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 includes a slot (413) opened at the lower end of each group of the L-shaped strips (409), an insert (411) is inserted into the inner cavity of each group of the slots (413), and each group of the insert (411) is fixedly connected to the surface of the circular groove (408) at the corresponding position. The lower end of each group of the L-shaped strips (409) is provided with a fixing bolt (412), and each group of the fixing bolts (412) is threaded upward and penetrates the L-shaped strip (409) and the insert (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 with rapid die change according to claim 2, characterized in that: The ejection assembly includes a mounting tube (205) fixedly connected to the bottom of each set of static molds (201), a spring (212) is provided in the inner cavity of each set of mounting tubes (205), a sliding plate (211) is provided in the inner cavity of each set 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 set 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 set of mounting tubes (205).

10. The multi-station forging equipment for metal bolts with 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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