Cold heading forming device for metal bolt

Abstract

The invention discloses a metal bolt cold heading forming device which comprises a bottom plate, inclined sliding faces are arranged at the two ends of the bottom plate in an embedded mode, four sets of sliding columns are fixedly installed on the upper surface of the bottom plate, a top plate is fixedly installed on the upper surfaces of the four sets of sliding columns, and a cold heading mechanism is fixedly installed on the upper surface of the top plate. And the first bolt grooves are formed in the upper surface of the bottom plate, connecting frames are fixedly installed at the two ends of the bottom plate, and loading and unloading mechanisms are fixedly installed on the upper surfaces of the connecting frames. Through the design of the loading and unloading mechanism, automatic filling and loading and unloading operation after forming are carried out on a workpiece, automation is achieved in the whole process through motor driving and mechanical transmission, manual operation links are reduced, the production efficiency is greatly improved, the workpiece can be rapidly filled into a die groove for cold heading forming, and the production efficiency is improved. And discharging is completed, continuous production can be achieved, and the yield in unit time is increased.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading, in particular to a metal bolt cold heading device. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die-casting or forging, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is known as the "mother of industry". When processing bolts, cold heading molds are needed. Bolts are a kind of mechanical parts, cylindrical threaded fasteners equipped with nuts. Fasteners consist of a head, a screw and a cylinder with external threads, and are used to fasten two objects with threaded holes.

[0003] For example, a Chinese patent with the authorization announcement number CN222221035U discloses a multi-station cold heading forming device for high-strength bolts. The utility model relates to the field of cold heading forming technology. It includes a base, a fixed plate is fixed on one side of the upper surface of the base, and hydraulic cylinders are fixed on both ends of the fixed plate; a driving member, the driving member is arranged in the middle of the upper surface of the base, and the output end of the hydraulic cylinder is connected to the driving member; a male mold, multiple male molds are arranged, and multiple male molds are installed on the driving member; a female mold, the female mold is arranged on the other side of the upper surface of the base, and multiple female molds are arranged, and multiple female molds are adapted to the male mold. The multi-station cold heading forming device for high-strength bolts is provided with a driving member on the base, and the driving member can drive the male mold to move, so that the male mold and the female mold cooperate to perform bolt cold heading forming, and the male mold is installed on the movable plate on the driving member by bolts, so that the male mold is easy to disassemble and replace when it is worn or needs to be replaced, and multiple male mold stations are arranged on the movable plate, which improves the production efficiency of the device.

[0004] However, the multi-station cold heading forming device for high-strength bolts mentioned above requires workers to manually load and unload materials during the cold heading forming process of the bolts, and is unable to automatically perform loading and unloading operations on the workpieces after forming. Manual loading and unloading requires workers to place the blanks into the female mold one by one, and to remove the bolts from the mold after forming. This takes more time than the automatic loading and unloading method, especially in batch production, the increase in time cost will be more obvious, thereby reducing the overall production efficiency. Summary of the invention

[0005] The object of the present invention is to provide a metal bolt cold heading forming device to solve the problem in the above background technology that the workpiece cannot be automatically loaded and unloaded during the cold heading forming of the bolt and the unloading operation after forming cannot be performed.

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

[0007] A metal bolt cold heading forming device comprises: a bottom plate, both ends of the bottom plate are embedded with inclined sliding surfaces, four groups of sliding columns are fixedly installed on the upper surface of the bottom plate, top plates are fixedly installed on the upper surfaces of the four groups of sliding columns, a cold heading mechanism is fixedly installed on the upper surface of the top plate, the pressure end of the cold heading mechanism slides on the outer surfaces of the four groups of sliding columns, so that the cold heading mechanism can be pushed under the outer surface of the sliding column and inserted into a first bolt groove, and the first bolt groove is opened on the upper surface of the bottom plate;

[0008] Among them, connecting frames are fixedly installed at both ends of the base plate, and a loading and unloading mechanism is fixedly installed on the upper surface of the connecting frame. The loading and unloading mechanism is filled with cold-forged parts, so that the loading end of the loading and unloading mechanism can automatically lift the cold-forged parts and accurately transport them into the first bolt groove. The other half of the first bolt groove can be assembled with the unloading end of the loading and unloading mechanism to form a complete mold groove. The unloading end of the loading and unloading mechanism slides on the surface of the inclined sliding surface. After the workpiece is cold-forged, it can slide off from one end of the first bolt groove by sliding to one end on the inclined sliding surface through the loading and unloading mechanism, so that the cold-forged bolts can fall from the first bolt groove to the inclined sliding surface to complete the unloading.

[0009] Preferably, the loading and unloading mechanism includes a filling cylinder, which is fixedly mounted on the upper surface of the connecting frame, and two groups of transmission columns are rotatably mounted at both ends of the filling cylinder, and the outer surfaces of each two groups of the transmission columns are sleeved with conveyor belts, and a lifting plate is fixedly mounted on the outer surface of the conveyor belt, and the lifting plate is inclined at 30°, and workpieces are poured into the filling cylinder and a triangular plate is fixedly mounted on the lower end of the interior, so that the triangular plate can guide the poured workpieces to the surfaces of the two groups of the conveyor belts, and then the workpieces can slide into the upper surface of the lifting plate through the inclined shape of the triangular plate, and with the transmission of the conveyor belt, the lifting plate can drive the workpiece to move vertically upward to be flush with the connecting pipe, and the connecting pipe is connected and mounted at one end of the filling cylinder, so that the workpieces in the lifting plate flush with the connecting pipe can slide into the connecting pipe;

[0010] Wherein, the transmission column is fixedly connected to the output shaft of the first motor, and the first motor is fixedly installed at one end of the filling cylinder.

[0011] Preferably, one end of the connecting pipe is connected to a collecting pipe, which allows the workpieces in the connecting pipe to slide into the collecting pipe and be stored vertically inside. The lower surface of the collecting pipe can be flush with the feeding pipe, allowing the workpieces stored inside to slide into a group of workpieces and enter the feeding pipe. A guide plate is fixedly installed on the outer surface of the feeding pipe, and the guide plate is slidably installed between two groups of guide blocks. The guide block is fixedly installed at one end of the bottom plate.

[0012] Preferably, a connecting plate is fixedly mounted on the lower surface of the guide plate, the connecting plate is threadedly mounted on the outer surface of the first threaded rod, the first threaded rod is fixedly mounted on one end of the output shaft of the second motor, and the second motor is fixedly mounted on the lower surface of the base plate.

[0013] Preferably, the feed tube can be pushed through the connecting plate by the threaded transmission of the first threaded rod to be flush with the first bolt groove and the second bolt groove, so that the workpiece filled in the feed tube can automatically slide into a complete mold groove formed by assembling the first bolt groove and the second bolt groove, the second bolt groove is opened at one end of the assembly plate, the assembly plate slides on the surface of the inclined sliding surface, the lower surface of the assembly plate slides through the lower surface of the bottom plate and is threadedly installed on the outer surface of the second threaded rod, the second threaded rod is fixedly installed at one end of the output shaft of the dual-axis motor, and the dual-axis motor is fixedly installed on the lower surface of the bottom plate;

[0014] Wherein, a blocking plate is fixedly installed on the outer surface of the feeding pipe, so that when the feeding pipe is driven to be flush with the mold groove, the blocking plate can be driven together to block the collecting pipe.

[0015] Preferably, after the workpiece is cold headed, the dual-axis motor can drive the second threaded rod and the threaded transmission assembly plate to drive the second bolt groove to be separated from the first bolt groove, so that the bolts formed by cold heading inside can fall out onto the surface of the inclined sliding surface.

[0016] Preferably, the cold heading mechanism includes a reduction motor, which is fixedly mounted on the upper surface of the top plate, and a swivel column is fixedly mounted on one end of the output shaft of the reduction motor. The swivel column rotates in a swivel groove, and the swivel groove is opened on the upper surface of the top pressure plate. The top pressure plate slides on the outer surfaces of four groups of sliding columns. A traction column is fixedly mounted on the outer surface of the swivel column, and the traction column slides in the traction groove, and the traction groove is opened on the inner ring wall of the swivel groove.

[0017] Preferably, the traction column can be driven by the rotary column to rotate in the traction groove of the rotating groove, so that the traction column can reciprocate through the traction groove to push and pull the top pressure plate to slide up and down on the outer surface of the sliding column.

[0018] Preferably, a connecting tube is fixedly installed on the lower surface of the top pressure plate, a cold heading pile is fixedly installed in the connecting tube, a hexagonal head is fixedly installed on the lower surface of the cold heading pile, and the hexagonal head of the cold heading pile can be reciprocatedly pushed and pulled by the top pressure plate to be pushed into the mold groove assembled by the first bolt groove and the second bolt groove.

[0019] Preferably, a covering cylinder is slidably installed in the connecting cylinder, and the covering cylinder slides on the outer surface of the cold heading pile at the same time. A spring is provided in the connecting cylinder, and the upper surface of the spring is fixedly connected to the upper surface of the connecting cylinder, and the lower surface of the spring is fixedly connected to the upper surface of the covering cylinder, so that when the hexagonal head of the cold heading pile is driven to hit the die groove, the covering cylinder can be driven to touch the upper surface of the bottom plate and slide into the connecting cylinder so that it can cover the upper surface of the die groove at the same time.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the design of the inclined sliding surface, the sliding column, the first bolt groove, the cold heading mechanism and the loading and unloading mechanism, when in use, the workpiece can be dumped into the loading and unloading mechanism, so that the loading end of the loading and unloading mechanism can automatically swing up the cold heading workpiece and accurately transport it into the first bolt groove, and the other half of the first bolt groove can be assembled with the unloading end of the loading and unloading mechanism to form a complete die groove, so that the placed workpiece can automatically slide into the die groove and be flush with the cold heading mechanism, and then the cold heading mechanism can be started and driven to reciprocate on the outer surface of the sliding column to hit the first bolt groove and the loading and unloading mechanism The unloading end of the loading and unloading mechanism is assembled into a die groove, so as to realize cold forging the workpiece into a bolt in the die groove, and the unloading end of the loading and unloading mechanism slides on the surface of the inclined sliding surface, so that after the workpiece is cold forged, it can slide off from one end of the first bolt groove by sliding to one end of the loading and unloading mechanism on the inclined sliding surface, and the cold forged bolt can fall from the first bolt groove to the inclined sliding surface to complete the unloading, thereby realizing the automatic operation of the whole process from workpiece loading, cold forging to unloading, reducing manual intervention, reducing labor intensity, and improving the level of production automation.

[0022] 2. Through the design of the double-axis motor, the second bolt groove, the second threaded rod, the second motor, the first threaded rod, the filling cylinder, the conveyor belt, the lifting plate, the connecting pipe, the collecting pipe, the feeding pipe, the blocking plate and the assembling plate, the workpiece is automatically filled into the die groove formed by the first bolt groove and the second bolt groove. The workpiece can be filled into the filling cylinder and the first motor can be started. The first motor can drive the transmission column to drive the conveyor belt to rotate, and then the conveyor belt can drive the lifting plate fixedly installed on the outer surface to drive upward. The triangular plate at the lower end of the filling cylinder will guide the workpiece to the surface of the two sets of conveyor belts, so that the workpiece can slide into the upper surface of the lifting plate and move vertically upward with the transmission of the conveyor belt. After being flush with the connecting pipe, the workpiece in the starting plate can automatically slide into the connecting pipe connected with it, and one end of the connecting pipe is connected to a collecting pipe, which can allow the workpiece in the connecting pipe to slide into the collecting pipe and be stored vertically inside, and the lower surface of the collecting pipe can be flush with the feeding pipe, so that the workpiece stored inside can slide into a group of workpieces and enter the feeding pipe, and then the second motor can be started to drive the first threaded rod threaded transmission connecting plate to drive the guide plate to slide horizontally between the two groups of guide blocks, so that the guide plate can drive the feeding pipe to move flush with the mold groove assembled by the first bolt groove and the second bolt groove, so that the workpiece filled in the feeding pipe can slide into the mold groove, thereby realizing the automatic feeding operation. , and then the cold heading mechanism can be started to hit the workpiece in the die groove to form a bolt shape. In the process of the feeding tube being driven to be flush with the die groove, the feeding tube can drive the blocking plate fixedly installed on the outer surface to slide and block the collecting tube. The feeding tube after feeding can be driven by the reversal of the second motor to be flush with the collecting tube again, so that the workpiece stored vertically in the collecting tube can slide into the feeding tube again to prepare for the next feeding. After the workpiece is cold headed into a bolt shape, the dual-axis motor can be started to drive the second threaded rod to drive the assembly plate to slide to one end on the surface of the inclined sliding surface, so that the assembly plate can drive the second bolt groove opened at one end to separate from the assembly with the first bolt groove, so that the internal The upset bolts fall out onto the surface of the inclined sliding surface to complete the automatic unloading operation. After the unloading is completed, the dual-axis motor can be started again to drive the second threaded rod to reverse, so that the assembly plate installed on the threaded outer surface of the second threaded rod drives the second bolt groove to be assembled with the first bolt groove again into a complete mold groove, preparing for the next cold upsetting. In this way, the workpiece can be automatically loaded and unloaded after forming, and the whole process is automated through motor drive and mechanical transmission, which reduces manual operation links and greatly improves production efficiency. It can quickly fill the workpiece into the mold groove, perform cold upsetting and complete unloading, realize continuous production, and increase output per unit time.

[0023] 3. Through the design of the reduction motor, rotary column, traction column, rotary groove, traction groove, covering cylinder, cold heading pile and spring, when the workpiece is filled into the die groove, the reduction motor can be started to drive the rotary column to rotate in the rotary groove, and in the process of rotation, the rotary column can drive the traction column fixed on the outer surface to rotate in the traction groove opened in the rotary groove, so that the traction column can reciprocate through the traction groove to push and pull the top pressure plate to slide up and down on the outer surface of the sliding column, and the top pressure plate can drive the connecting cylinder on the lower surface to move vertically downward, and the connecting cylinder can drive the cold heading pile and the covering cylinder fixed and slidably installed inside to move downward together, so that the top pressure plate can drive the cold heading pile to hit the upper surface of the workpiece in the die groove, so as to realize the cold forging of the workpiece into a bolt shape and store it in the die groove, and the lower surface of the cold heading pile is fixedly installed with a hexagonal head, which can make the cold heading pile be forged reciprocatingly, driving the hexagonal head The impact into the die groove enables more concentrated and more effective pressure to be applied to the workpiece during the cold forging process, which helps to form a bolt head with regular shape and precise size, and improves the molding quality and precision of the product. When the hexagonal head of the cold forging pile is driven to impact into the die groove, it can drive the top of the covering cylinder to touch the upper surface of the bottom plate, slide into the connecting cylinder and squeeze on one end of the spring. The spring can apply a downward thrust to the covering cylinder, which can make the covering cylinder cover the upper surface of the die groove, prevent metal debris and splashes generated during the cold forging process from flying out, protect the safety of the operator, and reduce the risk of damage to other parts of the equipment. When the cold forging pile is driven to be lifted, it can be pushed out of the connecting cylinder by the elastic thrust applied by the spring, so that it can be reset in time without affecting the next cold forging operation, thereby ensuring the continuity and efficiency of the entire cold forging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the metal bolt cold heading forming device of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the bottom plate and the top plate of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the dual-axis motor and the second motor of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the conveyor belt and the material-lifting plate of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the loading and unloading mechanism of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the feeding pipe driving the blocking plate to block the collecting pipe of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the first bolt groove and the second bolt groove of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the traction groove and the rotating column of the present invention;

[0032] Fig. 9 It is a schematic structural diagram of the covering cylinder and the cold heading pile of the present invention.

[0033] In the figure: 1, bottom plate; 101, inclined sliding surface; 102, sliding column; 103, top plate; 104, connecting frame; 105, first bolt groove; 2, cold heading mechanism; 201, reduction motor; 202, rotating column; 203, traction column; 204, top pressure plate; 205, rotating groove; 206, traction groove; 207, connecting cylinder; 208, covering cylinder; 209, cold heading pile; 210, spring; 3, loading and unloading mechanism; 301, double shaft Motor; 302, second bolt groove; 303, second threaded rod; 304, second motor; 305, first threaded rod; 306, connecting plate; 307, filling cylinder; 308, transmission column; 309, conveyor belt; 310, lifting plate; 311, first motor; 312, connecting pipe; 313, collecting pipe; 314, feeding pipe; 315, blocking plate; 316, guide plate; 317, guide block; 318, assembly plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] like Figure 1-Figure 2 As shown, this embodiment provides a metal bolt cold heading forming device, comprising: a bottom plate 1, both ends of the bottom plate 1 are embedded with inclined sliding surfaces 101, four groups of sliding columns 102 are fixedly installed on the upper surface of the bottom plate 1, a top plate 103 is fixedly installed on the upper surface of the four groups of sliding columns 102, a cold heading mechanism 2 is fixedly installed on the upper surface of the top plate 103, the pressure end of the cold heading mechanism 2 slides on the outer surface of the four groups of sliding columns 102, so that the cold heading mechanism 2 can be pushed under the outer surface of the sliding column 102 and inserted into the first bolt groove 105, and the first bolt groove 105 is opened on the upper surface of the bottom plate 1;

[0036] Among them, connecting frames 104 are fixedly installed at both ends of the base plate 1, and a loading and unloading mechanism 3 is fixedly installed on the upper surface of the connecting frame 104. The loading and unloading mechanism 3 is filled with cold-forged parts, so that the loading end of the loading and unloading mechanism 3 can automatically lift the cold-forged parts and accurately transport them into the first bolt groove 105. The other half of the first bolt groove 105 can be assembled with the unloading end of the loading and unloading mechanism 3 to form a complete mold groove. The unloading end of the loading and unloading mechanism 3 slides on the surface of the inclined sliding surface 101. After the workpiece is cold-forged, it can slide off from one end of the first bolt groove 105 by sliding toward one end on the inclined sliding surface 101 through the loading and unloading mechanism 3, so that the cold-forged bolts can fall from the first bolt groove 105 to the inclined sliding surface 101 to complete the unloading.

[0037] Through the design of the inclined sliding surface 101, the slide column 102, the first bolt groove 105, the cold heading mechanism 2 and the loading and unloading mechanism 3, when in use, the workpiece can be dumped into the loading and unloading mechanism 3, so that the loading end of the loading and unloading mechanism 3 can automatically swing up the cold heading workpiece and accurately transport it into the first bolt groove 105, and the other half of the first bolt groove 105 can be assembled with the unloading end of the loading and unloading mechanism 3 to form a complete die groove, so that the placed workpiece can automatically slide into the die groove and be flush with the cold heading mechanism 2, and then the cold heading mechanism 2 can be started and driven to reciprocate and hit the first bolt groove 105 on the outer surface of the slide column 102 The unloading end of the loading and unloading mechanism 3 is assembled into a die groove, so as to realize cold forging the workpiece into a bolt in the die groove, and the unloading end of the loading and unloading mechanism 3 slides on the surface of the inclined sliding surface 101, so that after the workpiece is cold forged, it can slide off from one end of the first bolt groove 105 by sliding the loading and unloading mechanism 3 on the inclined sliding surface 101 to one end, and the cold forged bolt can fall from the first bolt groove 105 to the inclined sliding surface 101 to complete the unloading, thereby realizing the whole process from workpiece loading, cold forging to unloading. Automation operation is achieved, which reduces manual intervention, reduces labor intensity, and improves the level of production automation.

[0038] like Figure 3-Figure 7As shown, the loading and unloading mechanism 3 includes a filling cylinder 307, which is fixedly mounted on the upper surface of the connecting frame 104, and two sets of transmission columns 308 are rotatably mounted at both ends of the filling cylinder 307, and the outer surfaces of each of the two sets of transmission columns 308 are sleeved with conveyor belts 309, and the outer surface of the conveyor belt 309 is fixedly mounted with a lifting plate 310, and the lifting plate 310 is inclined at 30°. Workpieces are poured into the filling cylinder 307 and a triangular plate is fixedly mounted at the lower end of the filling cylinder 307, so that the triangular plate can push the poured workpieces to the two sets of conveyor belts 309. Surface guidance allows the workpiece to slide into the upper surface of the loading plate 310 through the inclined shape of the triangular plate, and with the transmission of the conveyor belt 309, the loading plate 310 can drive the workpiece to move vertically upward to be flush with the connecting tube 312. The connecting tube 312 is connected and installed at one end of the filling cylinder 307, so that the workpiece in the loading plate 310 flush with the connecting tube 312 can slide into the connecting tube 312. The transmission column 308 is fixedly connected to the output shaft of the first motor 311, and the first motor 311 is fixedly installed at one end of the filling cylinder 307.

[0039] Among them, one end of the connecting pipe 312 is connected to a collecting pipe 313, which can allow the workpieces in the connecting pipe 312 to slide into the collecting pipe 313 and be stored vertically therein. The lower surface of the collecting pipe 313 can be flush with the feeding pipe 314, so that the workpieces stored inside can slide into a group of workpieces and enter the feeding pipe 314. A guide plate 316 is fixedly installed on the outer surface of the feeding pipe 314. The guide plate 316 is slidably installed between two groups of guide blocks 317. The guide block 317 is fixedly installed at one end of the bottom plate 1. A connecting plate 306 is fixedly installed on the lower surface of the guide plate 316. The connecting plate 306 is threadedly installed on the outer surface of the first threaded rod 305. The first threaded rod 305 is fixedly installed at one end of the output shaft of the second motor 304. The second motor 304 The feeding tube 314 can be pushed by the first threaded rod 305 through the connecting plate 306 to be flush with the first bolt groove 105 and the second bolt groove 302, so that the workpiece filled in the feeding tube 314 can automatically slide into a complete mold groove formed by assembling the first bolt groove 105 and the second bolt groove 302. The second bolt groove 302 is provided at one end of the assembling plate 318, and the assembling plate 318 slides on the surface of the inclined sliding surface 101. The lower surface of the assembling plate 318 slides through the lower surface of the bottom plate 1 and is threadedly mounted on the outer surface of the second threaded rod 303. The second threaded rod 303 is fixedly mounted on one end of the output shaft of the dual-axis motor 301, and the dual-axis motor 301 is fixedly mounted on the lower surface of the bottom plate 1.

[0040] A blocking plate 315 is fixedly installed on the outer surface of the feeding pipe 314 , so that when the feeding pipe 314 is driven to be flush with the mold groove, the blocking plate 315 can be driven together to block the collecting pipe 313 .

[0041] After the workpiece is cold-forged, the dual-axis motor 301 can drive the second threaded rod 303 and the threaded transmission assembly plate 318 to drive the second bolt groove 302 to separate from the first bolt groove 105, so that the bolts formed by cold-forging inside can fall out onto the surface of the inclined sliding surface 101.

[0042] Through the design of the dual-axis motor 301, the second bolt groove 302, the second threaded rod 303, the second motor 304, the first threaded rod 305, the filling cylinder 307, the conveyor belt 309, the lifting plate 310, the connecting pipe 312, the collecting pipe 313, the feeding pipe 314, the blocking plate 315 and the assembling plate 318, the workpiece is automatically filled into the mold groove formed by the first bolt groove 105 and the second bolt groove 302. The workpiece can be filled into the filling cylinder 307 and the first motor 311 can be started, and the first motor 311 can drive the transmission column 308 to drive the conveyor belt 309 to rotate, so that the conveyor belt 209 can drive the lifting plate 310 fixedly installed on the outer surface to transmit upward, and the triangle plate at the lower end of the filling cylinder 307 will move the workpiece The workpieces are guided to the surfaces of the two groups of conveyor belts 309, so that the workpieces can slide into the upper surface of the material lifting plate 310, and after the conveyor belt 309 moves vertically upward to be flush with the connecting pipe 312, the workpieces in the material lifting plate 310 can automatically slide into the connecting pipe 312 connected thereto, and one end of the connecting pipe 312 is connected to a collecting pipe 313 installed, so that the workpieces in the connecting pipe 312 can slide into the collecting pipe 313 and be stored vertically therein, and the lower surface of the collecting pipe 313 can be flush with the feeding pipe 314, so that the workpieces stored inside can slide into a group of workpieces and enter the feeding pipe 314, and then the second motor 304 can be started to drive the first threaded rod 305 to drive the threaded transmission connecting plate 306 to drive the guide plate 316 to slide horizontally between the two groups of guide blocks 317 The guide plate 316 can drive the feeding tube 314 to move to be flush with the die groove assembled by the first bolt groove 105 and the second bolt groove 302, so that the workpiece filled in the feeding tube 314 can slide into the die groove, thereby realizing the automatic feeding operation, and then the cold heading mechanism 2 can be started to hit the workpiece in the die groove to form a bolt shape, and in the process of the feeding tube 314 being driven to be flush with the die groove, the feeding tube 314 can drive the blocking plate 315 fixedly installed on the outer surface to slide to block the collecting tube 313, and the feeding tube 314 after the feeding is completed can be driven by the reversal of the second motor 304 to be flush with the collecting tube 313 again, so that the workpiece vertically stored in the collecting tube 313 can slide into the feeding tube 314 again. , in preparation for the next loading, and after the workpiece is cold-forged into a bolt shape, the dual-axis motor 301 can be started to drive the second threaded rod 303 to drive the assembling plate 318 to slide toward one end on the surface of the inclined sliding surface 101, so that the assembling plate 318 can drive the second bolt groove 302 opened at one end to separate from the assembly with the first bolt groove 105, so that the bolt formed by cold-forging inside can fall out of it and onto the surface of the inclined sliding surface 101 to complete the automatic unloading operation, and after the unloading is completed, the dual-axis motor 301 can be started again to drive the second threaded rod 303 to reverse, so that the second threaded rod 303 drives the assembling plate 318 with threads installed on the outer surface to drive the second bolt groove 302 to be assembled with the first bolt groove 105 again into a complete mold groove, in preparation for the next cold forging,In this way, the workpiece can be automatically loaded and unloaded after forming. The whole process is automated through motor drive and mechanical transmission, which reduces manual operation and greatly improves production efficiency. The workpiece can be quickly loaded into the die slot, cold-forging and unloading can be completed, which can realize continuous production and increase the output per unit time.

[0043] like Figure 8-Figure 9 As shown, the cold heading mechanism 2 includes a reduction motor 201, which is fixedly mounted on the upper surface of the top plate 103, and a rotating column 202 is fixedly mounted on one end of the output shaft of the reduction motor 201. The rotating column 202 rotates in a rotating groove 205, and the rotating groove 205 is arranged on the upper surface of the top pressure plate 204. The top pressure plate 204 slides on the outer surface of the four groups of sliding columns 102. A traction column 203 is fixedly mounted on the outer surface of the rotating column 202, and the traction column 203 slides in a traction groove 206. The traction groove 206 is arranged on the inner ring wall of the rotating groove 205. The traction column 203 The rotating column 202 can be driven to rotate in the traction groove 206 of the rotating groove 205, so that the traction column 203 can push and pull the top pressure plate 204 back and forth through the traction groove 206 to slide up and down on the outer surface of the sliding column 102. A connecting tube 207 is fixedly installed on the lower surface of the top pressure plate 204, and a cold heading pile 209 is fixedly installed in the connecting tube 207. A hexagonal head is fixedly installed on the lower surface of the cold heading pile 209. The hexagonal head of the cold heading pile 209 can be pushed and pulled back and forth through the top pressure plate 204 to be pushed into the mold groove assembled by the first bolt groove 105 and the second bolt groove 302.

[0044] Among them, a covering cylinder 208 is slidably installed in the connecting cylinder 207, and the covering cylinder 208 slides on the outer surface of the cold heading pile 209 at the same time. A spring 210 is arranged in the connecting cylinder 207, and the upper surface of the spring 210 is fixedly connected to the upper surface of the connecting cylinder 207, and the lower surface of the spring 210 is fixedly connected to the upper surface of the covering cylinder 208, so that when the hexagonal head of the cold heading pile 209 is driven to hit into the die groove, it can drive the covering cylinder 208 to touch the upper surface of the bottom plate 1 and slide into the connecting cylinder 207 so that it can cover the upper surface of the die groove at the same time.

[0045] Through the design of the reduction motor 201, the rotating column 202, the traction column 203, the rotating groove 205, the traction groove 206, the covering cylinder 208, the cold heading pile 209 and the spring 210, when the workpiece is filled into the die groove, the reduction motor 201 can be started to drive the rotating column 202 to rotate in the rotating groove 205, and during the rotation process, the rotating column 202 can drive the traction column 203 fixed on the outer surface to rotate in the traction groove 206 opened in the rotating groove 205, so that the traction column 203 can pass through the die groove 206. The top pressure plate 204 is pushed and pulled back and forth through the traction groove 206 to slide up and down on the outer surface of the slide column 102, and the top pressure plate 204 can drive the connecting tube 207 on the lower surface to move vertically downward, and the connecting tube 207 can drive the cold heading pile 309 and the covering tube 208 fixed and slidably installed inside to move downward together, so that the top pressure plate 204 can drive the cold heading pile 209 to hit the upper surface of the workpiece in the die groove, so as to realize the cold heading of the workpiece into a bolt shape and store it in the die groove, and the lower surface of the cold heading pile 209 is fixedly installed with a hexagonal The head can make the cold heading pile 309 driven by reciprocating forging, driving the hexagonal head to hit into the die groove, so that more concentrated and effective pressure can be applied to the workpiece during the cold heading process, which is helpful to form a bolt head with regular shape and precise size, and improves the molding quality and precision of the product. When the hexagonal head of the cold heading pile 209 is driven to hit into the die groove, it can drive the covering cylinder 208 to touch the upper surface of the bottom plate 1, slide into the connecting cylinder 207 and squeeze one end of the spring 210, and the spring 210 can Applying a downward thrust to the covering cylinder 208 can make the covering cylinder 208 cover the upper surface of the die groove, which can prevent metal debris, splashes, etc. generated during the cold forging process from flying out, protect the safety of the operator, and also reduce the risk of damage to other parts of the equipment. When the cold forging pile 209 is driven and lifted, it can be pushed out from the connecting cylinder 207 by the elastic thrust applied by the spring 210, so that it can be reset in time without affecting the next cold forging operation, thereby ensuring the continuity and efficiency of the entire cold forging process.

[0046] This embodiment also introduces the variable helix angle impact dynamics equation in the cold heading impact dynamics and die coordinated motion control:

[0047]

[0048] Parameter Description:

[0049] T: output torque of the reduction motor (Nm);

[0050] r: traction column rotation radius (m);

[0051] β 0： Initial helix angle of traction groove (°);

[0052] k: helix angle gradient coefficient (° / rad);

[0053] u: friction coefficient of sliding column;

[0054] θ: real-time rotation angle of the rotating column (rad);

[0055] For example: when T = 120Nm, β 0 =15°, k=0.3° / rad, the impact force of the cold heading pile at θ=π / 2 is calculated. Through the nonlinear helix angle design, the impact force is significantly increased at the moment of contact, the head forming quality is improved, the nonlinear growth of the impact force is achieved, and the plastic deformation characteristics of the material are matched. Compared with the constant helix angle design, the metal flow efficiency is significantly improved, avoiding the material rebound defect caused by the traditional sinusoidal motion.

[0056] The working steps of this scheme are summarized and sorted out according to the above technical scheme: when in use, the workpiece can be automatically filled into the mold groove formed by assembling the first bolt groove 105 and the second bolt groove 302, and the workpiece can be filled into the filling cylinder 307 and the first motor 311 can be started, and the first motor 311 can drive the transmission column 308 to drive the conveyor belt 309 to rotate, so that the conveyor belt 209 can drive the lifting plate 310 fixedly installed on the outer surface to drive upward, and the triangular plate at the lower end of the filling cylinder 307 will guide the workpiece to the surface of the two groups of conveyor belts 309, so that the workpiece can slide into the upper surface of the lifting plate 310, and after the conveyor belt 309 moves vertically upward to be flush with the connecting pipe 312, the lifting plate 310 can be made to move upward. The workpiece automatically slides into the connecting pipe 312 connected thereto, and one end of the connecting pipe 312 is connected to a collecting pipe 313 installed thereon, so that the workpiece in the connecting pipe 312 can slide into the collecting pipe 313 and be stored vertically therein, and the lower surface of the collecting pipe 313 can be flush with the feeding pipe 314, so that the workpiece stored inside can slide into a group of workpieces and enter the feeding pipe 314, and then the second motor 304 can be started to drive the first threaded rod 305, the threaded transmission connecting plate 306 drives the guide plate 316 to slide horizontally between the two groups of guide blocks 317, so that the guide plate 316 can drive the feeding pipe 314 to move to be flush with the mold groove assembled by the first bolt groove 105 and the second bolt groove 302, so that the workpiece filled in the feeding pipe 314 can slide into the mold groove The reduction motor 201 can then be started to drive the rotating column 202 to rotate in the rotating groove 205, and during the rotation process, the rotating column 202 can drive the traction column 203 fixed on the outer surface to rotate in the traction groove 206 opened in the rotating groove 205, so that the traction column 203 can reciprocate through the traction groove 206 to push and pull the top pressure plate 204 to slide up and down on the outer surface of the sliding column 102, and the top pressure plate 204 can drive the connecting tube 207 on the lower surface to move vertically downward, and the connecting tube 207 can drive the cold heading pile 209 and the covering tube 208 fixed and slidably installed inside to move downward together, so that the top pressure plate 204 can drive the cold heading pile 209 to hit the upper surface of the workpiece in the die groove, thereby realizing the cold heading of the workpiece. The cold heading pile 209 is forged into a bolt shape and stored in the die groove, and a hexagonal head is fixedly installed on the lower surface of the cold heading pile 209, which can make the cold heading pile 209 driven by reciprocating forging to drive the hexagonal head to hit the die groove, so that more concentrated and more effective pressure can be applied to the workpiece during the cold heading process, which is helpful to form a bolt head with a regular shape and precise size. When the hexagonal head of the cold heading pile 209 is driven to hit the die groove, it can drive the covering cylinder 208 to touch the upper surface of the bottom plate 1, slide into the connecting cylinder 207 and squeeze on one end of the spring 210, and the spring 210 can apply a downward thrust to the covering cylinder 208, so that the covering cylinder 208 can be covered on the upper surface of the die groove, which can prevent metal debris, splashes, etc. generated during the cold heading process from flying out, and protect the safety of the operator.When the cold heading pile 209 is driven to be lifted, it can be pushed out from the connecting tube 207 by the elastic thrust applied by the spring 210, so that it can be reset in time without affecting the next cold heading operation, thereby ensuring the continuity and efficiency of the entire cold heading process. In the process of the feeding pipe 314 being driven to be flush with the die groove, the feeding pipe 314 can drive the blocking plate 315 fixedly installed on the outer surface to slide and block the collecting pipe 313. The feeding pipe 314 after the feeding is completed can be driven by the reverse rotation of the second motor 304 to be flush with the collecting pipe 313 again, so that the workpieces stored vertically in the collecting pipe 313 can slide into the feeding pipe 314 again, preparing for the next feeding, and the workpieces are cold After being upset into a bolt shape, the dual-axis motor 301 can be started to drive the second threaded rod 303 to drive the assembly plate 318 to slide toward one end on the surface of the inclined sliding surface 101, so that the assembly plate 318 can drive the second bolt groove 302 opened at one end to be separated from the assembly with the first bolt groove 105, so that the bolt formed by cold upsetting inside can fall out of it and onto the surface of the inclined sliding surface 101 to complete the automatic unloading operation. After the unloading is completed, the dual-axis motor 301 can be started again to drive the second threaded rod 303 to reverse, so that the second threaded rod 303 drives the assembly plate 318 with threads installed on the outer surface to drive the second bolt groove 302 to be assembled with the first bolt groove 105 again into a complete mold groove, so as to prepare for the next cold upsetting.

[0057] In summary: this realizes the automatic loading and unloading of the workpiece after forming, and the whole process is automated through motor drive and mechanical transmission, reducing manual operation links, greatly improving production efficiency, and being able to quickly fill the workpiece into the die slot, perform cold heading forming, and complete unloading, thereby achieving continuous production and increasing output per unit time.

[0058] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled 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 metal bolt cold heading forming device, characterized in that: include: A bottom plate (1), both ends of the bottom plate (1) are embedded with inclined sliding surfaces (101), four groups of sliding columns (102) are fixedly installed on the upper surface of the bottom plate (1), top plates (103) are fixedly installed on the upper surface of the four groups of sliding columns (102), and a cold heading mechanism (2) is fixedly installed on the upper surface of the top plate (103), and the pressure end of the cold heading mechanism (2) slides on the outer surface of the four groups of sliding columns (102), so that the cold heading mechanism (2) can be pushed under the outer surface of the sliding column (102) and inserted into a first bolt groove (105), and the first bolt groove (105) is opened on the upper surface of the bottom plate (1).

2. A metal bolt cold heading forming device according to claim 1, characterized in that: Connecting frames (104) are fixedly mounted on both ends of the bottom plate (1), and a loading and unloading mechanism (3) is fixedly mounted on the upper surface of the connecting frame (104). The loading and unloading mechanism (3) is filled with cold-forged parts, so that the loading end of the loading and unloading mechanism (3) can automatically swing up the cold-forged parts and accurately transport them into the first bolt groove (105). The other half of the first bolt groove (105) can be assembled with the unloading end of the loading and unloading mechanism (3) to form a complete die groove. The unloading end of the loading and unloading mechanism (3) slides on the surface of the inclined sliding surface (101), so that after the workpiece is cold-forged, the loading and unloading mechanism (3) can slide toward one end on the inclined sliding surface (101) to slide off from one end of the first bolt groove (105), so that the bolts formed by cold-forging can fall from the first bolt groove (105) onto the inclined sliding surface (101) to complete unloading.

3. A metal bolt cold heading forming device according to claim 2, characterized in that: The loading and unloading mechanism (3) comprises a filling cylinder (307), wherein the filling cylinder (307) is fixedly mounted on the upper surface of the connecting frame (104), and two sets of transmission columns (308) are rotatably mounted at both ends of the filling cylinder (307), and the outer surfaces of each two sets of the transmission columns (308) are sleeved with conveyor belts (309), and the outer surface of the conveyor belt (309) is fixedly mounted with a lifting plate (310), and the lifting plate (310) is inclined at 30 degrees, and workpieces are poured into the filling cylinder (307) and a triangular plate is fixedly mounted at the lower end thereof, so that the triangular plate can push the poured workpieces toward the two sets of the conveyor belts (309) The surface guide enables the workpiece to slide into the upper surface of the starting plate (310) through the inclined shape of the triangular plate, and with the transmission of the conveyor belt (309), the starting plate (310) can drive the workpiece to move vertically upward to be flush with the connecting pipe (312). The connecting pipe (312) is connected and installed at one end of the filling cylinder (307), so that the workpiece in the starting plate (310) flush with the connecting pipe (312) can slide into the connecting pipe (312). The transmission column (308) is fixedly connected to the output shaft of the first motor (311), and the first motor (311) is fixedly installed at one end of the filling cylinder (307).

4. A metal bolt cold heading forming device according to claim 3, characterized in that: One end of the connecting pipe (312) is connected to a collecting pipe (313) so that the workpieces in the connecting pipe (312) can slide into the collecting pipe (313) and be stored vertically therein. The lower surface of the collecting pipe (313) can be flush with the feeding pipe (314) so ​​that the workpieces stored therein can slide into a group of workpieces and enter the feeding pipe (314). A guide plate (316) is fixedly installed on the outer surface of the feeding pipe (314). The guide plate (316) is slidably installed between two groups of guide blocks (317). The guide blocks (317) are fixedly installed on one end of the bottom plate (1). A connecting plate (306) is fixedly installed on the lower surface of the guide plate (316). The connecting plate (306) is threadedly installed on the outer surface of the first threaded rod (305). The first threaded rod (305) is fixedly installed on one end of the output shaft of the second motor (304). The second motor (304) is fixedly installed on the lower surface of the bottom plate (1).

5. A metal bolt cold heading forming device according to claim 4, characterized in that: The feeding tube (314) can be pushed by the first threaded rod (305) through the connecting plate (306) to be flush with the first bolt groove (105) and the second bolt groove (302), so that the workpiece filled in the feeding tube (314) can automatically slide into a complete mold groove formed by assembling the first bolt groove (105) and the second bolt groove (302), the second bolt groove (302) is opened at one end of the assembly plate (318), the assembly plate (318) slides on the surface of the inclined sliding surface (101), the lower surface of the assembly plate (318) slides to the lower surface of the bottom plate (1) and is threadedly installed on the outer surface of the second threaded rod (303), the second threaded rod (303) is fixedly installed at one end of the output shaft of the dual-axis motor (301), and the dual-axis motor (301) is fixedly installed on the lower surface of the bottom plate (1); A blocking plate (315) is fixedly mounted on the outer surface of the feed pipe (314), so that when the feed pipe (314) is driven to be flush with the die groove, the blocking plate (315) can be driven together to block the collecting pipe (313).

6. A metal bolt cold heading forming device according to claim 5, characterized in that: After the workpiece is cold-forged, the dual-axis motor (301) can drive the second threaded rod (303) and the threaded transmission assembly plate (318) to drive the second bolt groove (302) to be separated from the first bolt groove (105), so that the bolt formed by cold-forging inside can fall out onto the surface of the inclined sliding surface (101).

7. A metal bolt cold heading forming device according to claim 6, characterized in that: The cold heading mechanism (2) comprises a reduction motor (201), the reduction motor (201) is fixedly mounted on the upper surface of the top plate (103), a rotary column (202) is fixedly mounted on one end of the output shaft of the reduction motor (201), the rotary column (202) rotates in a rotary groove (205), the rotary groove (205) is arranged on the upper surface of a top pressure plate (204), the top pressure plate (204) slides on the outer surface of four groups of sliding columns (102), a traction column (203) is fixedly mounted on the outer surface of the reduction motor (201), the traction column (203) slides in a traction groove (206), and the traction groove (206) is arranged on the inner ring wall of the rotary groove (205).

8. A metal bolt cold heading forming device according to claim 7, characterized in that: The traction column (203) can be driven by the rotating column (202) to rotate in the traction groove (206) of the rotating groove (205), so that the traction column (203) can reciprocate through the traction groove (206) to push and pull the top pressure plate (204) to slide up and down on the outer surface of the sliding column (102).

9. A metal bolt cold heading forming device according to claim 8, characterized in that: A connecting tube (207) is fixedly installed on the lower surface of the top pressure plate (204), a cold heading pile (209) is fixedly installed in the connecting tube (207), and a hexagonal head is fixedly installed on the lower surface of the cold heading pile (209). The hexagonal head of the cold heading pile (209) can be pushed and pulled back and forth through the top pressure plate (204) to be pushed into the die groove assembled by the first bolt groove (105) and the second bolt groove (302).

10. A metal bolt cold heading forming device according to claim 9, characterized in that: A covering cylinder (208) is slidably installed in the connecting cylinder (207), and the covering cylinder (208) slides on the outer surface of the cold heading pile (209) at the same time. A spring (210) is arranged in the connecting cylinder (207), and the upper surface of the spring (210) is fixedly connected to the upper surface of the connecting cylinder (207), and the lower surface of the spring (210) is fixedly connected to the upper surface of the covering cylinder (208), so that when the hexagonal head of the cold heading pile (209) is driven to hit the die groove, the covering cylinder (208) can be driven to hit the upper surface of the bottom plate (1) and slide into the connecting cylinder (207) so that it can cover the upper surface of the die groove at the same time.

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