Bolt cold heading equipment and cold heading method

Abstract

The invention discloses bolt cold heading equipment and a cold heading method, and relates to the technical field of cold heading, the bolt cold heading equipment comprises a rack, a transmission assembly and a cold heading assembly, and the cold heading assembly comprises a lifting unit, an extrusion unit, a material transferring unit and the like. The device has the beneficial effects that the transmission assembly is arranged to jointly drive the cold heading assembly, the extrusion unit and the material transferring unit, the structure is simple, the use of a driving source is reduced, and the production cost is reduced; cold heading steel wire rods are intermittently extruded through the arranged extruding unit, meanwhile, the material transferring unit intermittently conveys the cold heading steel wire rods, the extruding unit is matched with the material transferring unit to continuously cold heading and manufacture bolts, and the production efficiency is improved; the total length between the two swing rods is adjusted to be increased through the flywheel and the lifting rod, so that the cold heading assembly performs cold heading on the cold heading steel wire rod to form a bolt; and the total length between the two swing rods is shortened, so that the cold heading steel wire rods which are conveyed intermittently push down the cold heading steel wire rods which are subjected to cold heading to form the bolts, and automatic discharging is achieved.

Description

Technical Field

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

[0002] Bolt cold heading is a metal processing technology, mainly used to produce various types of bolts. Metal (usually steel) is forged into bolts of specific shapes and sizes through cold working at room temperature. The advantages of cold heading mainly include improving strength: cold heading refines the grain of metal materials, improves the strength and hardness of materials; saving materials: cold heading is a forming process that does not require a lot of cutting processing, which can effectively reduce metal waste; high processing efficiency: cold heading has a fast production speed and is suitable for mass production; excellent surface quality: the surface of cold headed bolts is smooth.

[0003] For example, the patent with the authorization announcement number CN115846580B, the authorization announcement date September 12, 2023, and the name "A high-strength bolt cold heading equipment and a process for preparing bolts thereof" includes the invention in the field of bolt preparation technology, and discloses a high-strength bolt cold heading equipment, including a conveying device, an extrusion device, a cold heading device and a feeding device, the cold heading device is slidably mounted on the upper surface of the conveying device, the extrusion device is fixedly mounted on the upper edge of the rear end surface of the conveying device, the feeding device is fixedly connected to the right end surface of the conveying device, and the interior of the conveying device includes a support base, a collection box, a first plunger cylinder, a limit frame, a connecting frame, a clamping block, a limit rod and a limit slide, and the collection box is slidably clamped on the left end edge of the upper surface of the support base. The present invention can facilitate the rapid replacement of the mold inside the cold heading equipment through the coordinated operation between the conveying device, the extrusion device, the cold heading device and the feeding device, thereby avoiding affecting the production efficiency of the cold heading equipment, and can facilitate the automatic loading and unloading of the bolts, thereby ensuring the production efficiency of the metal column.

[0004] Although there are mechanisms such as the above-mentioned bolt cold heading equipment in the prior art, which integrates feeding, cold heading and unloading into one device to cold head bolts, the various mechanisms set up in the above-mentioned equipment require additional driving sources, which makes the cost of bolt cold heading high, and the above-mentioned equipment needs to cut the raw materials into suitable lengths first, and cannot directly perform cold heading processing on cold heading steel wire rods. Summary of the invention

[0005] The object of the present invention is to provide a bolt cold heading device and a cold heading method to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A bolt cold heading device comprises a frame, wherein a transmission assembly is arranged in the frame, and the transmission assembly is used to convey a cold heading steel wire rod and drive the cold heading assembly to cold head the cold heading steel wire rod during conveying. A frame, wherein a mounting plate is disposed at the lower side of the frame, a workbench is disposed at the upper end of the frame, and a plurality of rectangular grooves are disposed on the workbench; A cold heading assembly, wherein the cold heading assembly comprises a flywheel, the flywheel is arranged on the transmission assembly, a lifting rod is rotatably arranged on the side of the flywheel, two swing rods are rotatably arranged on the upper end of the lifting rod, a vertical rod is arranged on one side of the upper end of the workbench, a lifting unit is arranged in the middle of the upper end of the workbench, two linear guide rails are symmetrically arranged on the upper end of the lifting unit, a guide rail slider is slidably arranged on the outer side of each linear guide, a sliding frame is arranged on the upper end of the guide rail slider, an extrusion unit is arranged on the upper end of the sliding frame, and the upper end of the vertical rod and one end of the sliding frame close to the vertical rod are respectively hinged to the free end of one of the swing rods in a rotatable manner, and a material transfer unit is also arranged in the middle of the upper end of the workbench, and the material transfer unit is used to transfer the cut cold heading steel wire rod.

[0007] In the above-mentioned, the transmission assembly includes an electric motor, the electric motor is arranged at the upper end of the mounting plate, a driving pulley is arranged at the output end of the electric motor, a driving shaft is rotatably arranged at one end of the lower side of the frame away from the mounting plate, a driven pulley is arranged at one end of the driving shaft, the driving pulley and the driven pulley are connected by a plurality of belts, a first sprocket is arranged in the middle of the driving shaft, a gear box is arranged at the lower end of the workbench close to the end of the electric motor, a second sprocket is arranged on the gear box, and a chain is arranged between the first sprocket and the second sprocket.

[0008] The above-mentioned also includes a loading assembly, which includes a rotating shaft, which is rotatably arranged on a side of the upper end of the workbench away from the vertical rod, the gear box is provided with a first synchronous belt wheel, and the middle part of the rotating shaft is rotatably arranged with a second synchronous belt wheel, the first synchronous belt wheel and the second synchronous belt wheel are connected by a first synchronous belt, an active pulley is provided at one end of the rotating shaft, a support frame is provided on the side of the upper end of the workbench close to the rotating shaft, two conveying wheels are rotatably arranged in the support frame, and a groove wheel is provided at one end of the conveying wheel away from the lifting unit, and a sliding plate is also slidably arranged in the support frame, a threaded rod is rotatably arranged in the middle part of the sliding plate, the threaded rod is rotatably arranged in the middle part of the upper end of the support frame, and two conveying wheels are symmetrically rotatably arranged in the middle part of the sliding plate.

[0009] The above also includes a cutting component, which includes a connecting rod, a pin is provided on the side of the second sprocket, the second sprocket is rotatably arranged with the connecting rod through the pin, a fixed plate is provided in the middle of the upper end of the workbench, a guide plate is provided on one side of the fixed plate, an opening is provided in the middle of the guide plate, a slide groove is provided in the middle of the fixed plate, a cutting knife is slidably arranged on the fixed plate through the slide groove, and the cutting knife is slidably arranged in the opening of the guide plate.

[0010] As mentioned above, the lifting unit includes an adjusting rod, which is arranged in the middle of the workbench by threaded fitting. A lifting plate is rotatably arranged on the upper end of the adjusting rod, and a guide rod is respectively arranged at the four corners of the lower end of the lifting plate. Four circular holes are arranged on the workbench, and a guide bushing is arranged at each circular hole. A guide rod is respectively arranged in each guide bushing in a sliding manner.

[0011] As mentioned above, the extrusion unit comprises an extrusion block, a side of the extrusion block close to the material transfer unit is provided with an extrusion rod, and an end of the extrusion rod away from the material transfer unit is provided with a punch.

[0012] As mentioned above, the material transfer unit includes a first vertical plate and a second vertical plate, the upper ends of the first vertical plate and the second vertical plate are arranged in the middle of the upper end of the workbench, a mounting shaft is rotatably arranged between the first vertical plate and the second vertical plate, a turntable is arranged outside the mounting shaft, and a limiting ring is arranged between the first vertical plate and the second vertical plate, the turntable is rotatably arranged in the limiting ring, a third synchronous pulley is arranged on the transmission assembly, a fourth synchronous pulley is arranged at one end of the mounting shaft close to the lifting unit, and the third synchronous pulley and the fourth synchronous pulley are connected by a second synchronous belt.

[0013] As mentioned above, the turntable is provided with a plurality of mounting holes, each of which is provided with a cold heading die, and each of which is provided with a clamping block, which is slidably arranged in the turntable, and a return spring is arranged between the turntable and the clamping block.

[0014] As mentioned above, an impact hole is provided on the upper side of the second vertical plate, and a fixed bushing is provided on the upper side of the second vertical plate facing the lifting unit at the impact hole. The extrusion rod and the punch are both slidably arranged in the fixed bushing. A feed hole is also provided on the second vertical plate, and the feed hole and the mounting hole can overlap intermittently. A feed hole is provided on the first vertical plate, and the feed hole corresponds to the position of the lower two holes.

[0015] A bolt cold heading method, which is applicable to the above-mentioned bolt cold heading equipment, comprises the following steps: Step 1: Inspection and adjustment: Before using the bolt cold heading equipment to manufacture bolts, check the equipment. By rotating the threaded rod, the conveying wheel can be closely fitted with the cold heading steel wire rod and facilitate the conveying wheel to convey cold heading steel wire rods of different diameters; by rotating the adjusting rod, the adjusting rod drives the lifting plate to move along the workbench to adjust the extrusion rod and the punch to accurately enter the fixed bushing and the impact hole, so that the punch can cooperate with the cold heading die to cold head the bolts, ensuring that the equipment can work normally; The second step: loading: after the equipment inspection is completed, a cold heading steel wire rod is placed between the conveying wheels. At this time, the motor drives the active pulley, so that the active pulley drives the driven pulley to rotate through the plurality of belts, so that the driven pulley drives the first sprocket to rotate through the driving shaft, so that the first sprocket drives the second sprocket to rotate through the chain, so that the second sprocket drives the gear in the gear box and the extended shaft connected to the gear to rotate, so that the gear box can synchronously drive the first synchronous pulley and the third synchronous pulley to rotate, and when the first synchronous pulley rotates, the rotating shaft is driven to rotate through the first synchronous belt and the second synchronous pulley, so that the rotating shaft drives the active paddle wheel to rotate, so that the active paddle wheel drives the groove wheel to rotate intermittently, so that the groove wheel drives the conveying wheel connected to it to rotate, so that the conveying wheel intermittently conveys the cold heading steel wire rod placed therein to the cold heading assembly; Cutting: When the first sprocket drives the second sprocket to rotate through the chain, the second sprocket drives the cutting knife to reciprocate along the fixed plate in the vertical direction through the pin and the connecting rod. At the same time, the conveying wheel intermittently conveys the cold-headed steel wire rod placed therein to the guide plate, so that the cutting knife can intermittently cut the cold-headed steel wire rod into segments; Cold heading: After the cutting knife intermittently cuts the cold heading steel wire rod into segments, the conveying wheel continues to rotate to convey the cold heading steel wire rod, and at the same time, the gear box drives the third synchronous pulley to rotate, so that the third synchronous pulley drives the installation shaft to rotate through the second synchronous belt and the fourth synchronous pulley, so that the installation shaft drives the turntable to rotate, and the turntable drives the cold heading mold to rotate. When the installation hole of the turntable coincides with the feeding hole of the first vertical plate, the cold heading steel wire rod conveyed by the conveying wheel can squeeze the cold heading steel wire rod cut into segments by the cutting knife, so that the cold heading steel wire rod cut into segments by the cutting knife is conveyed into the cold heading mold from the feeding hole and the mounting hole. At this time, the gear box drives the third synchronous pulley, the belt, the fourth synchronous pulley and the installation shaft The turntable is driven to continue rotating so as to continuously feed the cold heading steel wire rod into the cold heading die. At the same time, the rotating turntable drives the cold heading die and the cold heading steel wire rod therein to enter between the first vertical plate and the second vertical plate. When the cold heading die coincides with the impact hole, the flywheel drives the lifting rod to lift and lower, so that the lifting rod drives the angle between the two swinging rods to become larger, so that the two swinging rods push the sliding frame, so that the sliding frame drives the guide rail slider to move along the linear guide rail, and then the sliding frame drives the extrusion rod and the punch to slide along the fixed bushing through the extrusion block, so that the punch approaches the cold heading die, so that the punch cooperates with the cold heading die to cold-forge the segmented cold heading steel wire rod into bolts. Step 3: Unloading: After the bolts are cold-forged, the gear box drives the turntable to continue rotating through the third synchronous pulley, the second synchronous belt, the fourth synchronous pulley and the mounting shaft. When the central axes of the unloading hole, the mounting hole and the loading hole coincide, the conveying wheel conveys the cold-forging steel wire rod so that the cold-forging steel wire rod can push the next section of the cold-forging steel wire rod into the cold-forging die. The cold-forging steel wire rod entering the cold-forging die can push the formed bolts out of the cold-forging die so that the formed bolts can fall and be collected.

[0016] In the above technical solution, the beneficial effects of the present invention are: 1. The present invention drives the cold heading component, the extrusion unit and the material transfer unit jointly through the transmission component, which has a simple structure, reduces the use of driving sources, and reduces production costs; 2. The present invention intermittently extrude cold-forged steel wire rods through the extrusion unit provided, and at the same time the material transfer unit intermittently transports the cold-forged steel wire rods, so that the extrusion unit cooperates with the material transfer unit to continuously cold-forge bolts, thereby improving production efficiency; 3. The present invention drives the lifting rod to move through the flywheel, and the lifting rod drives the angle between the two swing rods to increase, and the total length between the two swing rods to increase. At this time, the swing rod drives the cold heading assembly to cold head the cold headed steel wire rod into a bolt; the lifting rod drives the angle between the two swing rods to decrease, and the total length between the two swing rods to shorten. At this time, the intermittently conveyed cold headed steel wire rod pushes down the cold headed steel wire rod cold headed into a bolt to realize automatic unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a bolt cold heading device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the first planar structure of a bolt cold heading device provided by another embodiment of the present invention; Figure 3 A second planar structural schematic diagram of a bolt cold heading device provided by another embodiment of the present invention; Figure 4 Another embodiment of the present invention provides Figure 3 Sectional view at AA; Figure 5 A cross-sectional view of a material transfer unit (excluding the third synchronous pulley, the fourth synchronous pulley and the second synchronous belt) provided in another embodiment of the present invention; Figure 6 Another embodiment of the present invention provides Figure 4 A local enlarged schematic diagram of the M position; Figure 7 A schematic diagram of a three-dimensional structure between a workbench and a loading assembly provided in another embodiment of the present invention; Figure 8 A schematic diagram of the three-dimensional structure between a gear box, a second sprocket, a third synchronous pulley, a first synchronous pulley and a cutting assembly provided in another embodiment of the present invention.

[0019] Description of reference numerals: 1. Frame; 10. Mounting plate; 11. Workbench; 2. Transmission assembly; 20. Motor; 21. Active pulley; 22. Drive shaft; 23. Driven pulley; 24. Belt; 25. First sprocket; 26. Gear box; 27. Second sprocket; 28. Chain; 3. Cold heading assembly; 30. Flywheel; 31. Lifting rod; 32. Swinging rod; 33. Vertical rod; 34. Lifting unit; 340. Adjusting rod; 341. Lifting plate; 342. Guide rod; 343. Guide bushing; 35. Linear guide; 36. Guide slider; 37. Sliding frame; 38. Extrusion unit; 380. Extrusion block; 381. Extrusion rod; 382. Punch; 39. Transfer unit; 3 90. First vertical plate; 391. Second vertical plate; 392. Mounting shaft; 393. Turntable; 394. Limiting ring; 395. Third synchronous pulley; 396. Fourth synchronous pulley; 397. Second synchronous belt; 398. Cold heading die; 399. Block; 3910. Return spring; 3911. Fixed bushing; 4. Feeding assembly; 40. Rotating shaft; 41. First synchronous pulley; 42. Second synchronous pulley; 43. First synchronous belt; 44. Active pulley; 45. Support frame; 46. Conveying wheel; 47. Grooved wheel; 48. Sliding plate; 49. Threaded rod; 5. Cutting assembly; 50. Connecting rod; 51. Fixed plate; 52. Guide plate; 53. Cutting knife. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "vertical", "horizontal", "side", "inside", "outside", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] like Figure 1-8 As shown, a bolt cold heading device provided by an embodiment of the present invention comprises a frame 1, wherein a transmission assembly 2 is arranged in the frame 1, and the transmission assembly 2 is used to convey a cold heading steel wire rod and drive a cold heading assembly 3 to cold head the cold heading steel wire rod during conveyance; A frame 1, wherein a mounting plate 10 is disposed at the lower side of the frame 1, and a workbench 11 is disposed at the upper end of the frame 1, and a plurality of rectangular grooves are disposed on the workbench 11; A cold heading assembly 3, wherein the cold heading assembly 3 comprises a flywheel 30, the flywheel 30 is arranged on the transmission assembly 2, a lifting rod 31 is rotatably arranged on the side of the flywheel 30, and two swing rods 32 are rotatably arranged on the upper end of the lifting rod 31, a vertical rod 33 is arranged on one side of the upper end of the workbench 11, a lifting unit 34 is arranged in the middle of the upper end of the workbench 11, and two linear guides 35 are symmetrically arranged on the upper end of the lifting unit 34, and a guide rail slider 36 is slidably arranged on the outer side of each of the linear guides 35, a sliding frame 37 is arranged on the upper end of the guide rail slider 36, an extrusion unit 38 is arranged on the upper end of the sliding frame 37, and the upper end of the vertical rod 33 and one end of the sliding frame 37 close to the vertical rod 33 are respectively hinged to the free end of one of the swing rods 32 in a rotatable manner, and a material transfer unit 39 is also arranged in the middle of the upper end of the workbench 11, and the material transfer unit 39 is used to transport the cut cold heading steel wire rod.

[0023] In another embodiment provided by the present invention, the transmission assembly 2 includes a motor 20, the motor 20 is arranged at the upper end of the mounting plate 10, a driving pulley 21 is arranged at the output end of the motor 20, a driving shaft 22 is rotatably arranged at one end of the lower side of the frame 1 away from the mounting plate 10, a driven pulley 23 is arranged at one end of the driving shaft 22, the driving pulley 21 and the driven pulley 23 are connected by a plurality of belts 24, a first sprocket 25 is arranged in the middle of the driving shaft 22, a gear box 26 is arranged at one end of the lower end of the workbench 11 close to the motor 20, a second sprocket 27 is arranged on the gear box 26, and a chain 28 is arranged between the first sprocket 25 and the second sprocket 27; The specific implementation method is as follows: when cold heading bolts, the motor 20 drives the driving pulley 21 to rotate, and the driving pulley 21 drives the driven pulley 23 and the driving shaft 22 to rotate through the belt 24, so that the driving shaft 22 drives the first sprocket 25 to rotate, and the first sprocket 25 drives the second sprocket 27 to rotate through the chain 28, so that the second sprocket 27 drives the gears in the gear box 26 and the extended shaft connected to the gears to rotate.

[0024] In another embodiment provided by the present invention, a feeding assembly 4 is further included, wherein the feeding assembly 4 includes a rotating shaft 40, wherein the rotating shaft 40 is rotatably arranged on a side of the upper end of the workbench 11 away from the vertical rod 33, wherein a first synchronous pulley 41 is arranged on the gear box 26, and a second synchronous pulley 42 is rotatably arranged in the middle of the rotating shaft 40, wherein the first synchronous pulley 41 and the second synchronous pulley 42 are connected via a first synchronous belt 43, and an active pulley 44 is arranged at one end of the rotating shaft 40, wherein the workbench 11 is provided with a first synchronous pulley 41, wherein the first synchronous pulley 41 and the second synchronous pulley 42 are connected via a first synchronous belt 43, and wherein a driving pulley 44 is arranged at one end of the rotating shaft 40, wherein the workbench 11 is provided with a first synchronous pulley 41, wherein the first synchronous pulley 41 and the second synchronous pulley 42 are connected via a first synchronous belt 43, wherein the first synchronous pulley 41 and the second synchronous pulley 42 are connected via a first synchronous belt 43, and wherein a driving pulley 44 is arranged at one end of the rotating shaft 40, wherein the first synchronous pulley 41 and the second synchronous pulley 42 are connected via a first synchronous belt 43, wherein the first synchronous pulley 41 and the second synchronous pulley 42 are connected via a first synchronous belt 43, and ... A support frame 45 is provided on one side of the upper end close to the rotating shaft 40, two conveying wheels 46 are rotatably provided in the support frame 45, a groove wheel 47 is provided at one end of one of the conveying wheels 46 away from the lifting unit 34, a sliding plate 48 is also slidably provided in the support frame 45, a threaded rod 49 is rotatably provided in the middle of the sliding plate 48, the threaded rod 49 is rotatably provided in the middle of the upper end of the support frame 45, and two conveying wheels 46 are symmetrically rotatably provided in the middle of the sliding plate 48; The specific implementation is as follows: the motor 20 drives the gears in the gear box 26 and the extended shaft connected to the gears to rotate, so that the gear box 26 drives the rotating shaft 40 to rotate through the first synchronous pulley 41, the second synchronous pulley 42 and the first synchronous belt 43, so that the rotating shaft 40 drives the active dial wheel 44 to rotate, so that the active dial wheel 44 drives the groove wheel 47 to rotate intermittently, so that the groove wheel 47 drives the conveying wheel 46 connected thereto to rotate intermittently, so that the conveying wheel 46 conveys and straightens the cold-headed steel wire rod, and the conveying wheel 46 conveys the cold-headed steel wire rod to the cold-heading assembly 3; and in order to adapt to cold-headed steel wire rods of different diameters, by rotating the threaded rod 49, the threaded rod 49 drives the sliding plate 48 to rise and fall along the support frame 45, so that the threaded rod 49 drives the two conveying wheels 46 on the upper side to rise and fall along the support frame 45 through the sliding plate 48, so that the conveying wheel 46 conveys cold-headed steel wire rods of different diameters.

[0025] In another embodiment provided by the present invention, a cutting assembly 5 is further included, the cutting assembly 5 includes a connecting rod 50, a pin is provided on the side of the second sprocket 27, the second sprocket 27 is rotatably provided with the connecting rod 50 through the pin, a fixing plate 51 is provided at the middle of the upper end of the workbench 11, a guide plate 52 is provided on one side of the fixing plate 51, an opening is provided in the middle of the guide plate 52, a receiving space is provided at the lower end of the opening of the guide plate 52, and the cold heading steel wire rod can enter the receiving space for guided transportation, a slide groove is provided in the middle of the fixing plate 51, a cutting knife 53 is slidably provided on the fixing plate 51 through the slide groove, and the cutting knife 53 is slidably provided in the opening of the guide plate 52; The specific implementation is as follows: while the conveying wheel 46 conveys the cold-headed steel wire rod, the second sprocket 27 drives the connecting rod 50 to rise and fall through the pin, so that the connecting rod 50 drives the cutting knife 53 to rise and fall intermittently along the fixed plate 51, so that the cutting knife 53 intermittently cuts the cold-headed steel wire rod conveyed into the guide plate 52, so that the cold-headed steel wire rod cut into segments can enter the cold-heading assembly 3 to be cold-headed into bolts.

[0026] In another embodiment provided by the present invention, the lifting unit 34 includes an adjusting rod 340, which is arranged in the middle of the workbench 11 by threaded engagement, and a lifting plate 341 is rotatably arranged on the upper end of the adjusting rod 340, and a guide rod 342 is respectively arranged at four corners of the lower end of the lifting plate 341, and four circular holes are arranged on the workbench 11, and a guide bushing 343 is arranged at each circular hole, and each guide bushing 343 is slidably arranged with a guide rod 342; The specific implementation is as follows: in order to enable the extrusion unit 38 to accurately cold-forge the cold-forged steel wire rod cut into sections into bolts, and to adjust the extrusion unit 38 to move different lengths, by rotating the adjusting rod 340, the adjusting rod 340 drives the lifting plate 341 to rise and fall along the workbench 11, so that the lifting plate 341 is at different position heights, ensuring that the extrusion unit 38 can accurately cold-forge the cold-forged steel wire rod cut into sections into bolts, and at the same time adjust the extrusion unit 38 to move different lengths, that is, the extrusion unit 38 can cold-forge bolts of different lengths, and during the movement of the lifting plate 341, the lifting plate 341 can drive the guide rod 342 to slide along the guide bushing 343, so that the guide rod 342 and the guide bushing 343 guide and limit the moving lifting plate 341.

[0027] In another embodiment provided by the present invention, the extrusion unit 38 includes an extrusion block 380, and an extrusion rod 381 is provided on one side of the extrusion block 380 close to the material transfer unit 39, and a punch 382 is provided on one end of the extrusion rod 381 away from the material transfer unit 39; The specific implementation is as follows: during the movement of the lifting rod 31 driven by the flywheel 30, the lifting rod 31 can drive the angle between the two swinging rods 32 to change, thereby changing the total length between the two swinging rods 32, so that the swinging rod 32 drives the sliding frame 37 and the guide rail slider 36 to slide along the linear guide rail 35, so that the sliding frame 37 drives the extrusion block 380 to move, so that the extrusion block 380 drives the extrusion rod 381 to move synchronously, so that the extrusion rod 381 drives the punch 382 to cold-forge the cut cold-forged steel wire rod into bolts. Specifically, the lifting rod 31 drives the angle between the two swinging rods 32 The angle between the two swinging arms 32 becomes larger, and the total length between the two swinging arms 32 becomes longer. At this time, the swinging arm 32 drives the cold heading assembly 3 to cold head the cold heading steel wire rod cut into segments into bolts; the lifting rod 31 drives the angle between the two swinging arms 32 to become smaller, and the total length between the two swinging arms 32 becomes shorter. At this time, the cutting assembly 5 cuts the cold heading steel wire rod into segments, and at the same time, the conveying wheel 46 conveys the cold heading steel wire rod, and the cold heading steel wire rod just conveyed into the cold heading assembly 3 pushes down the cold heading steel wire rod cold headed into bolts to realize automatic unloading; and by replacing different punches 382, ​​the cold heading steel wire rod cut into segments can be cold headed into bolts of different shapes.

[0028] In another embodiment provided by the present invention, the material transfer unit 39 includes a first vertical plate 390 and a second vertical plate 391, the upper ends of the first vertical plate 390 and the second vertical plate 391 are arranged in the middle of the upper end of the workbench 11, a mounting shaft 392 is rotatably arranged between the first vertical plate 390 and the second vertical plate 391, a turntable 393 is arranged on the outer side of the mounting shaft 392, and a limit ring 394 is arranged between the first vertical plate 390 and the second vertical plate 391, the turntable 393 is rotatably arranged in the limit ring 394, a third synchronous pulley 395 is arranged on the transmission assembly 2, a fourth synchronous pulley 396 is arranged at one end of the mounting shaft 392 close to the lifting unit 34, and the third synchronous pulley 395 and the fourth synchronous pulley 396 are connected by a second synchronous belt 397; The specific implementation is as follows: the gear box 26 drives the third synchronous pulley 395 to rotate, so that the third synchronous pulley 395 drives the installation shaft 392 to rotate through the second synchronous belt 397 and the fourth synchronous pulley 396, so that the installation shaft 392 drives the turntable 393 to rotate, so that the turntable 393 can drive the cold-headed steel wire rod entering it to different positions, so that the equipment can perform different processing on the cold-headed steel wire rod. During the rotation of the turntable 393, the limit ring 394 can protect and limit the turntable 393.

[0029] In another embodiment provided by the present invention, a plurality of mounting holes are provided on the rotating disk 393, a cold heading die 398 is provided in each mounting hole, and a clamping block 399 is provided at each mounting hole, the clamping block 399 is slidably provided in the rotating disk 393, and a return spring 3910 is provided between the rotating disk 393 and the clamping block 399; The specific implementation is as follows: the cold heading die 398 is set in the installation of the turntable 393 in a sliding manner, and the cold heading die 398 will cause wear during use, resulting in defects in the cold-headed bolts. In order to avoid the above problems, the cold heading die 398 installed by a clamping manner can be replaced according to the wear situation, and when the cold heading die 398 is placed in the installation hole, the block 399 is squeezed by the reset spring 3910, so that the block 399 moves toward the axis of the installation hole, so that the block 399 locks the cold heading die 398 in the installation hole of the turntable 393; when taking out the cold heading die 398, the cold heading die 398 is pulled outward, so that the cold heading die 398 is squeezed by the reset spring 3910 by the block 399 and moves into the turntable 393, thereby facilitating the cold heading die 398 to be taken out from the installation hole of the turntable 393 for replacement.

[0030] In another embodiment provided by the present invention, an impact hole is provided on the upper side of the second vertical plate 391, and a fixed bushing 3911 is provided on the upper side of the second vertical plate 391 facing the lifting unit 34 at the impact hole, and the extrusion rod 381 and the punch 382 are both slidably arranged in the fixed bushing 3911, and a feed hole is also provided on the second vertical plate 391, and the feed hole and the mounting hole can overlap intermittently, and a feed hole is provided on the first vertical plate 390, and the positions of the feed hole and the feed hole correspond to each other; The specific implementation is as follows: the axis of the impact hole and the fixed bushing 3911 coincide with each other, so that the extrusion rod 381 can drive the punch 382 to slide in the impact hole and the fixed bushing 3911, so that the punch 382 cooperates with the cold heading die 398 to cold head the cold heading steel wire rod cut into segments into bolts, and different operations can be performed on the cold heading steel wire rod when the positions between the feeding hole, the mounting hole and the unloading hole are in different positions, that is, when the axis between the feeding hole, the mounting hole and the unloading hole coincide with each other, the cold heading steel wire rod cut into segments can enter the cold heading die 398, and during the unloading process, the cold heading steel wire rod cut into segments can be transported into the cold heading die 398 by the conveying wheel 46, and the cold heading steel wire rod in the cold heading die 398 can be cold headed out. The bolts are pushed out of the cold heading die 398, and after the formed bolts are pushed out, the cut-in-segment cold heading steel wire rod is just in the cold heading die 398, so that the turntable 393 can drive it to move to the cold heading position for cold heading forming; when the axes between the feeding hole, the mounting hole and the unloading hole do not coincide, the turntable 393 is between the first vertical plate 390 and the second vertical plate 391, and at this time the cut-in-segment cold heading steel wire rod in the cold heading die 398 will not fall out of the cold heading die 398, ensuring the accuracy of cold heading the cut-in-segment cold heading steel wire rod into bolts; in addition, when the axes of the mounting hole and the unloading hole coincide, the cold heading die 398 can be removed from the mounting hole of the turntable 393 for replacement.

[0031] A bolt cold heading method, which is applicable to the above-mentioned bolt cold heading equipment, comprises the following steps: Step 1: Inspection and adjustment: Before using the bolt cold heading equipment to manufacture bolts, the equipment is inspected. By rotating the threaded rod 49, the conveying wheel 46 can be closely fitted with the cold heading steel wire rod and facilitate the conveying wheel 46 to convey cold heading steel wire rods of different diameters; by rotating the adjusting rod 340, the adjusting rod 340 drives the lifting plate 341 to move along the workbench 11, so as to adjust the extrusion rod 381 and the punch 382 to accurately enter the fixed bushing 3911 and the impact hole, so that the punch 382 can cooperate with the cold heading die 398 to cold head the bolts, ensuring that the equipment can work normally; Step 2: Loading: After the equipment inspection is completed, the cold-forged steel wire rod is placed between the conveying wheels 46. At this time, the driving pulley 21 is driven by the motor 20, so that the driving pulley 21 drives the driven pulley 23 to rotate through the plurality of belts 24, so that the driven pulley 23 drives the first sprocket 25 to rotate through the driving shaft 22, so that the first sprocket 25 drives the second sprocket 27 to rotate through the chain 28, so that the second sprocket 27 drives the gear in the gear box 26 and the extended shaft connected to the gear to rotate, so that The gear box 26 can synchronously drive the first synchronous pulley 41 and the third synchronous pulley 395 to rotate. When the first synchronous pulley 41 rotates, the first synchronous belt 43 and the second synchronous pulley 42 drive the rotating shaft 40 to rotate, so that the rotating shaft 40 drives the active dial wheel 44 to rotate, so that the active dial wheel 44 drives the groove wheel 47 to rotate intermittently, so that the groove wheel 47 drives the conveying wheel 46 connected thereto to rotate, so that the conveying wheel 46 intermittently conveys the cold heading steel wire rod placed therein to the cold heading assembly 3; Cutting: When the first sprocket 25 drives the second sprocket 27 to rotate through the chain 28, the second sprocket 27 drives the cutting knife 53 to reciprocate in the vertical direction along the fixing plate 51 through the pin and the connecting rod 50. At the same time, the conveying wheel 46 intermittently conveys the cold-headed steel wire rod placed therein to the guide plate 52, so that the cutting knife 53 can intermittently cut the cold-headed steel wire rod into segments; Cold heading: After the cutting knife 53 intermittently cuts the cold heading steel wire rod into segments, the conveying wheel 46 continues to rotate to convey the cold heading steel wire rod, and at the same time, the gear box 26 drives the third synchronous pulley 395 to rotate, so that the third synchronous pulley 395 drives the installation shaft 392 to rotate through the second synchronous belt 397 and the fourth synchronous pulley 396, so that the installation shaft 392 drives the turntable 393 to rotate, so that the turntable 393 drives the cold heading die 398 to rotate. When the mounting hole of the rotating disk 393 coincides with the feeding hole of the first vertical plate 390, the cold heading steel wire rod transported by the transport wheel 46 can squeeze the cold heading steel wire rod cut into segments by the cutting knife 53, so that the cold heading steel wire rod cut into segments by the cutting knife 53 is transported from the feeding hole and the mounting hole into the cold heading die 398. At this time, the gear box 26 drives the cold heading steel wire rod through the third synchronous pulley 395, the belt 24, the fourth synchronous pulley 396 and the mounting shaft 392. The turntable 393 continues to rotate so as to continuously feed the cold heading steel wire rod into the cold heading die 398. At the same time, the rotating turntable 393 drives the cold heading die 398 and the cold heading steel wire rod therein to enter between the first vertical plate 390 and the second vertical plate 391. When the cold heading die 398 coincides with the impact hole, the flywheel 30 drives the lifting rod 31 to rise and fall, so that the lifting rod 31 drives the angle between the two swinging rods 32 to increase, thereby The two swing rods 32 push the slide frame 37, so that the slide frame 37 drives the guide rail slider 36 to move along the linear guide rail 35, and then the slide frame 37 drives the extrusion rod 381 and the punch 382 to slide along the fixed bushing 3911 through the extrusion block 380, so that the punch 382 is close to the cold heading die 398, so that the punch 382 cooperates with the cold heading die 398 to cold-forge the cold-forged steel wire rod into a bolt. Step 3: Unloading: After the bolts are cold-forged, the gear box 26 drives the turntable 393 to continue rotating through the third synchronous pulley 395, the second synchronous belt 397, the fourth synchronous pulley 396 and the mounting shaft 392. When the central axis of the unloading hole, the mounting hole and the loading hole coincide, the conveying wheel 46 conveys the cold-forging steel wire rod so that the cold-forging steel wire rod can push the next section of the cold-forging steel wire rod into the cold-forging mold 398. The cold-forging steel wire rod entering the cold-forging mold 398 can push the formed bolts out of the cold-forging mold 398 so that the formed bolts can fall and be collected.

[0032] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bolt cold heading device, comprising a frame (1), wherein a transmission assembly (2) is arranged in the frame (1), wherein the transmission assembly (2) is used to convey a cold heading steel wire rod and drive a cold heading assembly (3) to cold head the cold heading steel wire rod, wherein: A frame (1), wherein a mounting plate (10) is arranged at the lower side of the frame (1), a workbench (11) is arranged at the upper end of the frame (1), and a plurality of rectangular grooves are arranged on the workbench (11); A cold heading assembly (3), the cold heading assembly (3) comprising a flywheel (30), the flywheel (30) being arranged on the transmission assembly (2), a lifting rod (31) being arranged on the side of the flywheel (30) in a rotatable manner, two swinging rods (32) being arranged on the upper end of the lifting rod (31) in a rotatable manner, a vertical rod (33) being arranged on one side of the upper end of the workbench (11), a lifting unit (34) being arranged in the middle of the upper end of the workbench (11), two linear guide rails (35) being symmetrically arranged on the upper end of the lifting unit (34), each of which is provided with a plurality of linear guide rails (35) ... A guide rail slider (36) is slidably arranged on the outer side of the linear guide rail (35), a sliding frame (37) is arranged on the upper end of the guide rail slider (36), an extrusion unit (38) is arranged on the upper end of the sliding frame (37), and the upper end of the vertical rod (33) and an end of the sliding frame (37) close to the vertical rod (33) are respectively hinged to the free end of one of the swing rods (32) in a rotatable manner, and a material transfer unit (39) is also arranged in the middle of the upper end of the workbench (11), and the material transfer unit (39) is used to transfer the cut cold-headed steel wire rod.

2. A bolt cold heading equipment according to claim 1, characterized in that: The transmission assembly (2) comprises an electric motor (20), the electric motor (20) being arranged at the upper end of the mounting plate (10), the output end of the electric motor (20) being provided with a driving pulley (21), a driving shaft (22) being rotatably provided at one end of the lower side of the frame (1) away from the mounting plate (10), a driven pulley (23) being provided at one end of the driving shaft (22), the driving pulley (21) and the driven pulley (23) being connected via a plurality of belts (24), a first sprocket (25) being provided at the middle of the driving shaft (22), a gear box (26) being provided at one end of the lower end of the workbench (11) close to the electric motor (20), a second sprocket (27) being provided on the gear box (26), and a chain (28) being provided between the first sprocket (25) and the second sprocket (27).

3. A bolt cold heading equipment according to claim 2, characterized in that: The feeding assembly (4) further comprises a feeding assembly (4), wherein the feeding assembly (4) comprises a rotating shaft (40), the rotating shaft (40) being rotatably arranged on a side of the upper end of the workbench (11) away from the vertical rod (33), the gear box (26) being provided with a first synchronous pulley (41), the middle part of the rotating shaft (40) being rotatably arranged with a second synchronous pulley (42), the first synchronous pulley (41) and the second synchronous pulley (42) being connected via a first synchronous belt (43), one end of the rotating shaft (40) being provided with an active pulley (44), the upper end of the workbench (11) being close to the vertical rod (33), the gear box (26) being provided with a first synchronous pulley (41), the gear box (26) being provided with a second synchronous pulley (42), the first synchronous pulley (41) and the second synchronous pulley (42) being connected via a first synchronous belt (43), the gear box (26) being provided with a first synchronous pulley (41), the gear box (26) being provided with a first synchronous pulley (41), the gear box (26) being provided with a first synchronous pulley (41), the gear box (26) being provided with a second synchronous pulley (42 ... A support frame (45) is provided on one side of the rotating shaft (40), two conveying wheels (46) are rotatably provided in the support frame (45), a groove wheel (47) is provided at one end of one of the conveying wheels (46) away from the lifting unit (34), a sliding plate (48) is also slidably provided in the support frame (45), a threaded rod (49) is rotatably provided in the middle of the sliding plate (48), the threaded rod (49) is rotatably provided at the middle of the upper end of the support frame (45), and two conveying wheels (46) are symmetrically rotatably provided in the middle of the sliding plate (48).

4. A bolt cold heading equipment according to claim 2, characterized in that: The machine also comprises a cutting assembly (5), the cutting assembly (5) comprising a connecting rod (50), a pin being provided on the side of the second sprocket (27), the second sprocket (27) being rotatably provided with the connecting rod (50) via the pin, a fixing plate (51) being provided at the middle of the upper end of the workbench (11), a guide plate (52) being provided at one side of the fixing plate (51), an opening being provided at the middle of the guide plate (52), a sliding groove being provided at the middle of the fixing plate (51), a cutting knife (53) being slidably provided on the fixing plate (51) via the sliding groove, and the cutting knife (53) being slidably provided in the opening of the guide plate (52).

5. The bolt cold heading equipment according to claim 1, characterized in that: The lifting unit (34) comprises an adjusting rod (340), the adjusting rod (340) being arranged in the middle of the workbench (11) by means of threaded engagement, a lifting plate (341) being rotatably arranged at the upper end of the adjusting rod (340), a guide rod (342) being arranged at each of the four corners at the lower end of the lifting plate (341), four circular holes being arranged on the workbench (11), a guide bushing (343) being arranged at each of the circular holes, and a guide rod (342) being slidably arranged in each of the guide bushings (343).

6. The bolt cold heading equipment according to claim 1, characterized in that: The extrusion unit (38) comprises an extrusion block (380), a side of the extrusion block (380) close to the material transfer unit (39) is provided with an extrusion rod (381), and an end of the extrusion rod (381) away from the material transfer unit (39) is provided with a punch (382).

7. The bolt cold heading equipment according to claim 6, characterized in that: The material transfer unit (39) comprises a first vertical plate (390) and a second vertical plate (391), the upper ends of the first vertical plate (390) and the second vertical plate (391) are arranged at the middle of the upper end of the workbench (11), a mounting shaft (392) is rotatably arranged between the first vertical plate (390) and the second vertical plate (391), a turntable (393) is arranged outside the mounting shaft (392), and a limit ring (394) is arranged between the first vertical plate (390) and the second vertical plate (391), the turntable (393) is rotatably arranged inside the limit ring (394), a third synchronous pulley (395) is arranged on the transmission assembly (2), a fourth synchronous pulley (396) is arranged at one end of the mounting shaft (392) close to the lifting unit (34), and the third synchronous pulley (395) and the fourth synchronous pulley (396) are connected via a second synchronous belt (397).

8. The bolt cold heading equipment according to claim 7, characterized in that: The turntable (393) is provided with a plurality of mounting holes, each of which is provided with a cold heading die (398), and each of which is provided with a clamping block (399), the clamping block (399) being slidably arranged in the turntable (393), and a return spring (3910) being arranged between the turntable (393) and the clamping block (399).

9. The bolt cold heading equipment according to claim 8, characterized in that: An impact hole is provided on the upper side of the second vertical plate (391), and a fixed bushing (3911) is provided on the upper side of the impact hole on the side of the second vertical plate (391) facing the lifting unit (34). The extrusion rod (381) and the punch (382) are both slidably arranged in the fixed bushing (3911). A feed hole is also provided on the second vertical plate (391), and the feed hole and the mounting hole can overlap intermittently. A feed hole is provided on the first vertical plate (390), and the positions of the feed hole and the feed hole correspond to each other.

10. A bolt cold heading method, characterized in that: The bolt cold heading method is applicable to a bolt cold heading device according to any one of claims 1 to 9, and comprises the following steps: Step 1: Inspection and adjustment: Before using the bolt cold heading equipment to manufacture bolts, the equipment is inspected. By rotating the threaded rod (49), the conveying wheel (46) can be closely fitted to the cold heading steel wire rod and facilitate the conveying wheel (46) to convey cold heading steel wire rods of different diameters; by rotating the adjustment rod (340), the adjustment rod (340) drives the lifting plate (341) to move along the workbench (11), so as to adjust the extrusion rod (381) and the punch (382) to accurately enter the fixed bushing (3911) and the impact hole, so that the punch (382) can cooperate with the cold heading die (398) to cold head the bolts, thereby ensuring that the equipment can work normally; Step 2: Loading: After the equipment inspection is completed, a cold-forged steel wire rod is placed between the conveying wheels (46). At this time, the driving pulley (21) is driven by the motor (20), so that the driving pulley (21) drives the driven pulley (23) to rotate through the plurality of belts (24), so that the driven pulley (23) drives the first sprocket (25) to rotate through the driving shaft (22), so that the first sprocket (25) drives the second sprocket (27) to rotate through the chain (28), so that the second sprocket (27) drives the gear in the gear box (26) and the extended shaft connected to the gear to rotate, and so on. The gear box (26) is capable of synchronously driving the first synchronous pulley (41) and the third synchronous pulley (395) to rotate. When the first synchronous pulley (41) rotates, the first synchronous belt (43) and the second synchronous pulley (42) drive the rotating shaft (40) to rotate, so that the rotating shaft (40) drives the active dial wheel (44) to rotate, thereby causing the active dial wheel (44) to drive the groove wheel (47) to rotate intermittently, thereby causing the groove wheel (47) to drive the conveying wheel (46) connected thereto to rotate, so that the conveying wheel (46) intermittently conveys the cold heading steel wire rod placed therein to the cold heading assembly (3); Cutting: when the first sprocket (25) drives the second sprocket (27) to rotate via the chain (28), the second sprocket (27) drives the cutting knife (53) to reciprocate in the vertical direction along the fixed plate (51) via the pin and the connecting rod (50), and at the same time, the conveying wheel (46) intermittently conveys the cold-headed steel wire rod placed therein to the guide plate (52), so that the cutting knife (53) can intermittently cut the cold-headed steel wire rod into segments; Cold heading: After the cutting knife (53) intermittently cuts the cold heading steel wire rod into segments, the conveying wheel (46) continues to rotate to convey the cold heading steel wire rod, and at the same time, the gear box (26) drives the third synchronous pulley (395) to rotate, so that the third synchronous pulley (395) drives the installation shaft (392) to rotate through the second synchronous belt (397) and the fourth synchronous pulley (396), so that the installation shaft (392) drives the turntable (393) to rotate, so that the turntable (393) drives the cold heading die (398) to rotate. When the mounting hole of the rotating disk (393) coincides with the feeding hole of the first vertical plate (390), the cold heading steel wire rod transported by the transport wheel (46) can squeeze the cold heading steel wire rod cut into sections by the cutting knife (53), so that the cold heading steel wire rod cut into sections by the cutting knife (53) is transported from the feeding hole and the mounting hole into the cold heading die (398). At this time, the gear box (26) drives the rotating disk (393) through the third synchronous pulley (395), the belt (24), the fourth synchronous pulley (396) and the mounting shaft (392). The turntable (393) continues to rotate so as to continuously feed the cold heading steel wire rod into the cold heading die (398). At the same time, the rotating turntable (393) drives the cold heading die (398) and the cold heading steel wire rod therein to enter between the first vertical plate (390) and the second vertical plate (391). When the cold heading die (398) coincides with the impact hole, the flywheel (30) drives the lifting rod (31) to rise and fall, so that the lifting rod (31) drives the angle between the two swinging rods (32) to increase, thereby making the two swinging rods (32) have a greater angle. The swing rod (32) pushes the sliding frame (37), so that the sliding frame (37) drives the guide rail slider (36) to move along the linear guide rail (35), and then the sliding frame (37) drives the extrusion rod (381) and the punch (382) to slide along the fixed bushing (3911) through the extrusion block (380), so that the punch (382) approaches the cold heading die (398), so that the punch (382) cooperates with the cold heading die (398) to cold-forge the segmented cold heading steel wire rod into a bolt. Step 3: Unloading: After the bolts are cold-forged, the gear box (26) drives the turntable (393) to continue rotating through the third synchronous pulley (395), the second synchronous belt (397), the fourth synchronous pulley (396) and the mounting shaft (392). When the center axes of the unloading hole, the mounting hole and the loading hole coincide, the conveying wheel (46) conveys the cold-forging steel wire rod so that the cold-forging steel wire rod can push the next section of the cold-forging steel wire rod into the cold-forging die (398). The cold-forging steel wire rod entering the cold-forging die (398) can push the formed bolts out of the cold-forging die (398) so that the formed bolts can fall and be collected.

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