Fastener multi-station synchronous forming cold heading equipment

Abstract

The invention discloses fastener multi-station synchronous forming cold heading equipment, which belongs to the technical field of cold heading, and comprises a cold heading machine, on which a rack is fixed; the feeding assembly is rotationally connected to the cold header; the clamping assembly is slidably connected to the side face of the rack; the placing assembly is slidably connected to the side face of the rack; the cold heading assembly is connected to the cold heading machine in an intermittent reciprocating sliding mode. Four groups of punches are arranged, and the four groups of punches are sequentially a pre-forming punch, a primary upsetting punch, a fine upsetting punch and a forming punch. Cold heading deformation is continuously and gradually carried out on the metal material through the four sets of punches, and finally the needed part shape is formed. When the stamping frame moves, the four sets of punches can be driven to conduct cold heading on metal materials in the four sets of rotating dies respectively, after cold heading, the four sets of punches can stay for a certain time, the metal materials are prevented from rebounding under the action of residual stress in the metal materials, and the cold heading effect of the metal materials is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading, in particular to a fastener multi-station synchronous forming cold heading device. Background Art

[0002] Cold heading technology utilizes the principle of plastic deformation of metal materials at room temperature. By applying external force and speed to metal wire through a die, it forces it to flow plastically, thereby extruding parts of the desired shape and size. This technology is primarily used to manufacture fasteners such as screws, nuts, and nails. As a core process for metal plastic forming, cold heading technology plays a vital role in the manufacture of aluminum forgings for aerospace applications, offering significant advantages in the production of high-performance fasteners and complex thin-walled structural parts.

[0003] Cold heading technology has the advantages of high steel utilization and good mechanical properties. However, if the cold heading force is too large, dimensional deviations may occur due to the residual stress of the parts. Summary of the Invention

[0004] In view of the deficiencies in the prior art, an embodiment of the present invention aims to provide a multi-station synchronous forming cold heading device for fasteners to solve the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A fastener multi-station synchronous forming cold heading equipment, comprising:

[0007] Cold heading machine, a frame is fixed on the cold heading machine;

[0008] The feeding assembly is rotatably connected to the cold heading machine and is used to drive the metal material to be fed;

[0009] The clamping assembly is slidably connected to the side of the frame and is used to grab the metal material;

[0010] The placement component is slidably connected to the side of the frame and connected to the clamping component, and is used to cooperate with the clamping component to realize multi-station transmission of metal materials;

[0011] The cold heading assembly is intermittently reciprocatingly slidably connected to the cold heading machine, and is used to drive four sets of punches to sequentially cold head the metal materials in an orderly manner;

[0012] The feeding assembly is slidably connected in the frame and connected to the cold heading assembly. Before cold heading, it is used to cooperate with the cold heading assembly to realize the rotation of the metal material. After cold heading, it is used to cooperate with the cold heading assembly to realize the unloading of the metal material after cold heading.

[0013] As a preferred technical solution of the present invention, the feeding component includes: a feeding base fixed on the cold heading machine; a driving roller rotatably connected to the feeding base, and a driving motor for driving the driving roller to rotate is installed inside the feeding base, and the metal material is sequentially and rotatably connected between two groups of driving rollers.

[0014] As a preferred technical solution of the present invention, the clamping component includes: a moving frame slidably connected to the side of the machine frame, and at least six groups of first belt rollers are rotatably connected inside; a support plate fixed to the side of the moving frame, and a second belt roller is rotatably connected between two groups of support plates, and each group of first belt rollers and the second belt roller are sequentially connected by a belt; a driving member installed on the side of the support plate for driving the belt to drive through the second belt roller; a first clamping frame slidably connected inside the moving frame and connected to the surface of the upper belt; a second clamping frame slidably connected inside the moving frame and connected to the surface of the lower belt; a clamping groove opened on the sides of the first clamping frame and the second clamping frame.

[0015] As a preferred technical solution of the present invention, the placing component includes: a guiding frame fixed to the side of the machine frame, and a sliding frame is slidably connected to the surface, and a V-shaped groove is opened on the sliding frame; a cylinder fixed to the side of the machine frame, and the side of the guiding frame is connected to the output end of the cylinder; a vertical groove is opened on the machine frame, and the ends of two groups of vertical grooves are connected by a horizontal groove; a T-shaped frame fixed to the upper side of the moving frame, and a sliding column is fixed on the T-shaped frame, the middle of the sliding column is slidably connected inside the V-shaped groove, and the end is slidably connected inside the vertical groove or the horizontal groove.

[0016] As a preferred technical solution of the present invention, a U-shaped groove is opened on the machine frame, and a sliding pin is fixed to the side of the moving frame, and the sliding pin is slidably connected inside the U-shaped groove, and the specifications and directions of the U-shaped groove are the same as those of the vertical groove and the horizontal groove.

[0017] As a preferred technical solution of the present invention, the cold heading component includes: a sliding rod slidably connected inside the machine frame, two groups of sliding rods are installed, and one ends of the two groups of sliding rods are connected by a stamping frame, and a sliding groove is opened on the stamping frame; an arc groove is opened on the stamping frame, the two groups of arc grooves are connected end to end, and the two ends of the two groups of arc grooves are respectively connected to the sliding groove; a fixed frame is connected to the cold heading machine, and an actuator is installed on the side; a rotating frame is rotatably connected to the fixed frame, one end is connected to the output end of the actuator, and the other end is fixed with a sliding column, and the sliding column is sequentially slidably connected inside the sliding groove and the arc groove.

[0018] As a preferred technical solution of the present invention, the feeding assembly includes: a rotating mold, which is rotatably connected to the frame, a half gear is installed on the surface of the rotating mold, and two adjacent groups of rotating molds are connected by the half gear; a groove is opened on the surface of the rotating mold, and the ends of the two groups of grooves are connected by an oblique groove; a sliding shaft is fixed on the sliding rod, and the end is slidably connected to the inside of the groove or the oblique groove; a push rack is connected between the ends of the two groups of sliding rods away from the stamping rack; a feeding rod is slidably connected to the inside of the rotating mold, and the end is fixed on the push rack.

[0019] Compared with the prior art, the present invention has the following advantages: the present invention is equipped with four sets of punches, namely a preforming punch, a preliminary upsetting punch, a fine upsetting punch, and a forming punch. The four sets of punches continuously and gradually perform cold upsetting deformation on the metal material to ultimately form the desired part shape.

[0020] As the press frame moves, it drives four sets of punches to cold-forge four sets of metal materials. After cold-forging, the four sets of punches remain stationary for a certain period of time to prevent the metal materials from rebounding due to residual stress within the metal, ensuring the cold-forging effect of the metal materials. Before the four sets of punches cold-forge, the rotating die rotates on the frame, driven by the action of the chute and sliding shaft, ensuring that the end of the metal material slides smoothly into the rotating die to complete the cold-forging process.

[0021] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the overall structure of a fastener multi-station synchronous forming cold heading equipment provided by an embodiment of the present invention.

[0023] Figure 2 A schematic diagram of the internal structure of the movable frame of the fastener multi-station synchronous forming cold heading equipment provided by an embodiment of the present invention.

[0024] Figure 3 A schematic structural diagram of the rotary die of the fastener multi-station synchronous forming cold heading equipment provided by an embodiment of the present invention.

[0025] Figure 4 A top view of a fastener multi-station synchronous forming cold heading device provided by an embodiment of the present invention.

[0026] Figure 5 A side view of a fastener multi-station synchronous forming cold heading device provided by an embodiment of the present invention.

[0027] Figure numerals: 1, cold heading machine; 11, frame; 12, punch; 2, feed assembly; 21, feed seat; 22, transmission roller; 23, metal material; 3, clamping assembly; 31, moving frame; 32, first belt roller; 33, support plate; 34, second belt roller; 35, driving member; 36, belt; 371, first clamping frame; 372, second clamping frame; 38, clamping groove; 4, placement assembly; 41, guide frame; 42, sliding frame; 43, V-type Groove; 44, cylinder; 45, vertical groove; 46, horizontal groove; 47, sliding column; 48, T-frame; 51, T-shaped groove; 6, cold heading assembly; 61, slide rod; 62, punching frame; 63, sliding groove; 64, arc groove; 65, fixed frame; 66, actuator; 67, rotating frame; 68, slide column; 7, feeding assembly; 71, rotating mold; 72, groove; 73, inclined groove; 74, sliding shaft; 75, push frame; 76, feeding rod; 77, half gear. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0030] See also Figures 1 to 5 , a fastener multi-station synchronous forming cold heading equipment, comprising:

[0031] A cold heading machine 1, on which a frame 11 is fixed;

[0032] The feeding assembly 2 is rotatably connected to the cold heading machine 1 and is used to drive the metal material 23 to be fed;

[0033] The clamping assembly 3 is slidably connected to the side of the frame 11 and is used to grab the metal material 23;

[0034] The placement assembly 4 is slidably connected to the side of the frame 11 and connected to the clamping assembly 3, and is used to cooperate with the clamping assembly 3 to achieve multi-station transmission of the metal material 23;

[0035] The cold heading assembly 6 is intermittently reciprocatingly slidably connected to the cold heading machine 1, and is used to drive the four sets of punches 12 to sequentially cold-head the metal material 23;

[0036] The feeding assembly 7 is slidably connected in the frame 11 and connected to the cold heading assembly 6. Before cold heading, it is used to cooperate with the cold heading assembly 6 to realize the rotation of the metal material 23. After cold heading, it is used to cooperate with the cold heading assembly 6 to realize the unloading of the metal material 23 after cold heading.

[0037] In one embodiment of the present invention, Figure 3 and Figure 4 As shown, the feed assembly 2 includes:

[0038] The feed seat 21 is fixed on the cold heading machine 1;

[0039] The transmission roller 22 is rotatably connected to the feed seat 21 . A driving motor for driving the transmission roller 22 to rotate is installed inside the feed seat 21 . The metal material 23 is sequentially rolled and connected between the two sets of transmission rollers 22 .

[0040] In this embodiment, when the metal material 23 is cold headed, the metal material 23 is first placed between two sets of drive rollers 22, and the drive motor inside the feed seat 21 is turned on, so that the drive rollers 22 drive the metal material 23 it contacts to be transported inside the frame 11, so that the metal material 23 can be fed.

[0041] In one embodiment of the present invention, Figure 2 and Figure 5 As shown, the clamping assembly 3 includes:

[0042] The movable frame 31 is slidably connected to the side of the frame 11 and is internally rotatably connected to at least six groups of first belt rollers 32;

[0043] The support plate 33 is fixed to the side of the mobile frame 31. The second belt roller 34 is rotatably connected between the two groups of support plates 33. The first belt roller 32 and the second belt roller 34 of each group are connected in sequence by a belt 36. Specifically, the surfaces of the first belt roller 32 and the second belt roller 34 are both installed with pulleys.

[0044] A driving member 35 is mounted on the side of the support plate 33 and is used to drive the belt 36 through the second belt roller 34 for transmission;

[0045] The first clamping frame 371 is slidably connected to the interior of the moving frame 31 and connected to the surface of the upper belt 36;

[0046] The second clamping frame 372 is slidably connected to the interior of the moving frame 31 and connected to the surface of the lower belt 36;

[0047] The clamping groove 38 is provided on the side surfaces of the first clamping frame 371 and the second clamping frame 372 .

[0048] In this embodiment, the driving member 35 is turned on, and the output end of the driving member 35 drives the second belt roller 34 to rotate clockwise in the support plate 33. The second belt roller 34 will drive each group of first belt rollers 32 to rotate synchronously in the movable frame 31 through the belt 36, so that the belt 36 will drive each group of first clamping frames 371 and second clamping frames 372 to move closer to each other until the clamping grooves 38 on the sides of the first clamping frames 371 and the second clamping frames 372 clamp and fix the metal material 23.

[0049] like Figure 1 or Figure 2 As shown, four sets of first clamping frames 371 and second clamping frames 372 are installed. The four sets of first clamping frames 371 and second clamping frames 372 have the same specifications and the same specifications of the metal material 23. The first clamping frames 371 and second clamping frames 372 can simultaneously clamp and secure the four sets of metal materials 23, preventing the belt 36 from slipping and improving the stability of the clamping of the metal material 23. When the metal material 23 needs to be loosened, the driving member 35 is simply turned on, causing the output end of the driving member 35 to rotate in the opposite direction, so that each set of first clamping frames 371 and second clamping frames 372 moves away from each other, thereby loosening the metal material 23.

[0050] In one embodiment of the present invention, Figure 2 and Figure 5 As shown, the placement component 4 includes:

[0051] The guide frame 41 is fixed to the side of the frame 11 and is slidably connected to the sliding frame 42 on the surface. The sliding frame 42 is provided with a V-shaped groove 43;

[0052] The cylinder 44 is fixed to the side of the frame 11, and the side of the guide frame 41 is connected to the output end of the cylinder 44;

[0053] Vertical slots 45 are provided on the frame 11, and the ends of the two sets of vertical slots 45 are connected by a transverse slot 46;

[0054] The T-shaped frame 48 is fixed on the upper side of the movable frame 31 . A sliding column 47 is fixed on the T-shaped frame 48 . The middle portion of the sliding column 47 is slidably connected to the inside of the V-shaped groove 43 , and the end portion is slidably connected to the inside of the vertical groove 45 or the horizontal groove 46 .

[0055] In this embodiment, the cylinder 44 is turned on, so that the output end of the cylinder 44 drives the sliding frame 42 to slide rightward on the surface of the guide frame 41. When the sliding frame 42 slides, it drives the V-shaped groove 43 on its surface to slide synchronously. Figure 5As shown, the sliding column 47 is first at the lowest point of the left vertical groove 45. When the sliding frame 42 slides to the right, the sliding column 47 will first slide upward in the left vertical groove 45 under the action of the V-shaped groove 43. When sliding upward, the sliding column 47 will drive the moving frame 31 to slide upward synchronously through the T-shaped frame 48.

[0056] When the sliding post 47 rises vertically to the highest point of the left vertical groove 45, the sliding post 47 also slides to the highest point of the V-shaped groove 43. When the cylinder 44 continues to push the sliding frame 42 to slide to the right, the sliding post 47 will slide horizontally to the right in the transverse groove 46 under the action of the V-shaped groove 43 until the sliding post 47 slides to the rightmost point of the transverse groove 46.

[0057] When the sliding post 47 slides to the rightmost point of the horizontal groove 46 and the sliding frame 42 continues to slide to the right, the sliding post 47 will slide vertically downward in the vertical groove 45 on the right under the action of the V-shaped groove 43 until the sliding post 47 slides to the lowest point of the vertical groove 45 on the right. At this time, the sliding post 47 also slides to the lowest point on the left side of the V-shaped groove 43.

[0058] In summary, as the sliding frame 42 slides to the right, the sliding post 47 will first rise vertically, then move horizontally to the right, and finally move vertically downward along the trajectory of the vertical slot 45 and the horizontal slot 46. Thus, the sliding post 47 will drive the mobile frame 31 to move synchronously via the T-shaped frame 48. Therefore, after the first clamping frame 371 and the second clamping frame 372 inside the mobile frame 31 clamp the metal material 23, the first clamping frame 371 and the second clamping frame 372 will also drive the metal material 23 to move in the above manner, so that each set of the first clamping frame 371 and the second clamping frame 372 will grab the clamped metal material 23 and move it to the next set of workstations for cold heading.

[0059] When each group of first clamping frames 371 and second clamping frames 372 grabs the metal materials 23 they clamp to the next group of workstations, the cold heading assembly 6 can cold head each group of metal materials 23, and during the cold heading process, the output end of the cylinder 44 drives the sliding frame 42 to slide in the left reverse direction, so that the sliding column 47 will drive the mobile frame 31 to return along the original path through the T-shaped frame 48, so that the mobile frame 31 drives the first clamping frame 371 and the second clamping frame 372 to return to the initial position, so as to facilitate the clamping and transmission of the next group of metal materials 23.

[0060] In one embodiment of the present invention, Figure 2 and Figure 5As shown, the frame 11 is provided with a ⌚-shaped groove 51, and a sliding pin is fixed to the side of the movable frame 31. The sliding pin is slidably connected to the inside of the ⌚-shaped groove 51. The specifications and direction of the ⌚-shaped groove 51 are consistent with the vertical groove 45 and the horizontal groove 46. In this embodiment, when the T-shaped frame 48 drives the movable frame 31 to slide on the surface of the frame 11, the movable frame 31 will drive the sliding pin on its side to slide inside the ⌚-shaped groove 51, so that the movable frame 31 will be guided and limited under the action of the ⌚-shaped groove 51 and the sliding pin, thereby improving the stability of the movable frame 31 sliding on the surface of the frame 11.

[0061] In one embodiment of the present invention, Figure 2 and Figure 4 As shown, the cold heading assembly 6 includes:

[0062] Slide rods 61 are slidably connected to the interior of the frame 11. Two groups of slide rods 61 are installed. One end of the two groups of slide rods 61 is connected by a punching frame 62. The punching frame 62 is provided with a sliding groove 63.

[0063] The arc grooves 64 are provided on the punching frame 62 , and the two sets of arc grooves 64 are connected end to end, and the two ends of the two sets of arc grooves 64 are respectively connected to the sliding groove 63 ;

[0064] The fixing frame 65 is connected to the cold heading machine 1, and an actuator 66 is installed on the side. The driving member 35 and the actuator 66 are specifically servo motors;

[0065] The rotating frame 67 is rotatably connected to the fixed frame 65, one end of which is connected to the output end of the actuator 66, and the other end of which is fixed with a sliding post 68. The sliding post 68 is slidably connected in the sliding groove 63 and the arc groove 64 in turn, wherein the rotation radius of the sliding post 68 is equal to the radius of the arc groove 64, and the corresponding central angle of the arc groove 64 is less than 180 degrees.

[0066] In this embodiment, when the actuator 66 is turned on, the output end of the actuator 66 drives the slide 68 to rotate in a circle through the rotating frame 67. Figure 4 As shown, when the rotating frame 67 drives the slide 68 to rotate clockwise, the slide 68 will first slide clockwise in the lower arc groove 64. During the sliding of the slide 68 in the lower arc groove 64, the position of the stamping frame 62 will not move.

[0067] When the slide post 68 slides to the leftmost end position of the arc-shaped groove 64, the slide post 68 continues to slide clockwise and slides to the inside of the sliding groove 63 on the left. During the sliding process of the slide post 68 inside the sliding groove 63 on the left, the punching frame 62 will drive the slide rod 61 to slide inward on the frame 11 under the action of the slide post 68 and the sliding groove 63 on the left. When sliding, the punching frame 62 will drive the punch 12 to slide toward the frame 11.

[0068] When the slide post 68 rotates to the leftmost point, the slide post 68 slides to the leftmost position in the sliding groove 63 on the left side, and the slide post 68 continues to rotate clockwise. When the slide post 68 slides out of the sliding groove 63 on the left side, the slide post 68 will slide into the upper arc groove 64.

[0069] When the slide post 68 slides in the upper arc groove 64, the punch frame 62 drives the punch 12 to slide to the position closest to the frame 11. Thereafter, when the slide post 68 slides clockwise in the upper arc groove 64, the position of the punch frame 62 does not change.

[0070] When the slide post 68 slides out of the upper arc groove 64 in a clockwise direction, the slide post 68 will slide into the sliding groove 63 on the right side. During the sliding process of the slide post 68 in the sliding groove 63 on the right side, the punching frame 62 will drive the slide rod 61 to slide outward in the opposite direction on the frame 11 under the action of the slide post 68 and the sliding groove 63 on the right side. When sliding, the punching frame 62 will drive the punch 12 to slide away from the frame 11.

[0071] When the slide post 68 slides out of the sliding groove 63 on the right side, the slide post 68 will slide again into the lower arc groove 64. During the clockwise sliding of the slide post 68 in the lower arc groove 64, the position of the punching frame 62 will not change. At this time, the punching frame 62 drives the punch 12 to slide to the position farthest from the frame 11, and repeats the above working process in sequence.

[0072] In summary, during the circular rotation of the slide post 68, the stamping frame 62 will sequentially slide in the direction of approaching the frame 11, and when sliding to the close position, it will stay for a certain period of time; thereafter, the stamping frame 62 will slide in the direction of away from the frame 11, and also when sliding to the far position, it will stay for a certain period of time.

[0073] When the punching frame 62 moves, it will drive the four groups of punches 12 to cold-forge the metal materials 23 inside the four groups of rotating dies 71 respectively, so that the four groups of metal materials 23 will slide inside the rotating dies 71 under the extrusion of the four groups of punches 12 until the four groups of metal materials 23 slide to the innermost position of the four groups of rotating dies 71. At this time, the four groups of metal materials 23 will complete the cold forging forming under the action of the four groups of punches 12 respectively, and after cold forging, the four groups of punches 12 will stay for a certain period of time to prevent the metal material 23 from rebounding under the action of residual stress inside the metal, thereby ensuring the cold forging effect of the metal material 23.

[0074] After the four sets of punches 12 complete the cold heading of the four sets of metal materials 23, the four sets of punches 12 will slide in the opposite direction, and when the four sets of punches 12 slide to the farthest position, the four sets of punches 12 will also stay for a certain period of time, reserving a certain amount of time for the replacement of the four sets of metal materials 23.

[0075] Furthermore, the specifications of the four sets of punches 12 are not consistent. The four sets of punches 12 are sequentially a preforming punch, a preliminary upsetting punch, a fine upsetting punch, and a forming punch. The four sets of punches 12 continuously and gradually perform cold upsetting deformation on the metal material 23 to ultimately form the desired part shape (such as a bolt, nut, pin, etc.).

[0076] When the four groups of punches 12 slide to the farthest position, it can be seen from the above work that the four groups of punches 12 will stay for a certain period of time. During the stay, the driving part 35 will first be opened, so that the four groups of first clamping frames 371 and the second clamping frames 372 will clamp and fix the four groups of metal materials 23 respectively. After the four groups of metal materials 23 are fixed, the cylinder 44 drives the sliding frame 42 to slide to the right, so that the sliding column 47 will drive the moving frame 31 through the T-shaped frame 48 to move along the vertical groove 45 and the horizontal groove 46 track, so that the moving frame 31 will drive the metal material 23 to the next group of workstations for cold heading through the first clamping frame 371 and the second clamping frame 372. When the four groups of punches 12 cold head the four groups of metal materials 23 respectively, the moving frame 31 drives the first clamping frame 371 and the second clamping frame 372 to return along the original route, so as to facilitate the grabbing and transmission of the next group of metal materials 23.

[0077] In one embodiment of the present invention, Figure 4 As shown, the feeding assembly 7 includes:

[0078] The rotating mold 71 is rotatably connected to the frame 11. A half gear 77 is installed on the surface of the rotating mold 71. Two adjacent sets of rotating molds 71 ​​are connected by the half gear 77.

[0079] Grooves 72 are formed on the surface of the rotating mold 71, and the ends of the two groups of grooves 72 are connected by an inclined groove 73;

[0080] The sliding shaft 74 is fixed on the sliding rod 61, and the end thereof is slidably connected to the groove 72 or the inclined groove 73;

[0081] A push frame 75 is connected between the ends of the two sets of slide bars 61 away from the punching frame 62;

[0082] The feeding rod 76 is slidably connected to the inside of the rotating mold 71, and the end portion is fixed on the pushing frame 75.

[0083] In this embodiment, when the four groups of punches 12 slide away from the frame 11, the punching frame 62 will drive the push frame 75 to slide synchronously through the slide rod 61, so that the push frame 75 will drive the four groups of feeding rods 76 to slide in the four groups of rotating molds 71 ​​toward the frame 11, so that the feeding rods 76 can eject the metal material 23 that has undergone preliminary cold heading in the rotating mold 71. After the metal material 23 is ejected, the corresponding first clamping frame 371 and the second clamping frame 372 will respectively clamp and fix the metal material 23, and grab it to the next workstation to continue cold heading.

[0084] As the four sets of punches 12 slide toward the frame 11, the pusher 75, driven by the two sets of slide bars 61, pulls the four sets of feed rods 76 out of the corresponding rotating dies 71, freeing up space for the forming of the metal material 23. As the punching frame 62 pushes the two sets of slide bars 61 to slide, the two sets of slide bars 61 drive the sliding shafts 74 on their sides to slide within the grooves 72. When the sliding shafts 74 slide into the inclined grooves 73, the rotating dies 71 rotate on the frame 11 under the action of the inclined grooves 73 and the sliding shafts 74. When the sidemost rotating dies 71 rotate, the rotating dies 71 drive the adjacent set of rotating dies 71 to rotate synchronously through the connection of the two sets of half gears 77. This ensures that when the four sets of punches 12 perform cold heading on the metal material 23, the end of the metal material 23 can slide smoothly into the interior of the rotating dies 71.

[0085] When the cold heading of the metal material 23 is completed, the two sets of slide bars 61 slide in opposite directions. At this time, the rotating die 71 is reset under the action of the inclined groove 73 and the sliding shaft 74.

[0086] The working principle of the present invention is as follows: the present invention is provided with four sets of punches 12, which are respectively a preforming punch, a preliminary upsetting punch, a fine upsetting punch, and a forming punch. The four sets of punches 12 continuously and stepwise perform cold upsetting deformation on the metal material 23, and finally form the desired part shape.

[0087] When the four groups of punches 12 slide to the farthest position, since the four groups of punches 12 will stay for a certain period of time, during the stay, the driving part 35 is first turned on, so that the four groups of first clamping frames 371 and the second clamping frames 372 respectively clamp and fix the four groups of metal materials 23. After the four groups of metal materials 23 are fixed, the cylinder 44 drives the sliding frame 42 to slide to the right, so that the sliding column 47 will drive the moving frame 31 through the T-shaped frame 48 to move along the vertical groove 45 and the horizontal groove 46 track, so that the moving frame 31 will drive the metal material 23 to the next group of workstations for cold heading through the first clamping frame 371 and the second clamping frame 372. When the four groups of punches 12 respectively perform cold heading on the four groups of metal materials 23, the moving frame 31 drives the first clamping frame 371 and the second clamping frame 372 to return along the original route, so as to facilitate the grabbing and transmission of the next group of metal materials 23.

[0088] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fastener multi-station synchronous forming cold heading equipment, characterized in that: include: A cold heading machine (1), wherein a frame (11) is fixed on the cold heading machine (1); A feeding assembly (2) is rotatably connected to the cold heading machine (1) and is used to drive the metal material (23) to be fed; A clamping assembly (3) is slidably connected to the side of the frame (11) and is used to grasp the metal material (23); A placement assembly (4) is slidably connected to a side of the frame (11) and connected to the clamping assembly (3), and is used to cooperate with the clamping assembly (3) to achieve multi-station transmission of the metal material (23); A cold heading assembly (6) is intermittently reciprocatingly slidably connected to the cold heading machine (1) and is used to drive four groups of punches (12) to sequentially cold-head the metal material (23); The feeding assembly (7) is slidably connected in the frame (11) and connected to the cold heading assembly (6). Before cold heading, the feeding assembly (7) is used to cooperate with the cold heading assembly (6) to realize the rotation of the metal material (23). After cold heading, the feeding assembly (7) is used to cooperate with the cold heading assembly (6) to realize the unloading of the metal material (23) after cold heading.

2. The fastener multi-station synchronous forming cold heading equipment according to claim 1, characterized in that: The feed assembly (2) comprises: A feed base (21) is fixed on the cold heading machine (1); The transmission roller (22) is rotatably connected to the feed seat (21). A driving motor for driving the transmission roller (22) to rotate is installed inside the feed seat (21). The metal material (23) is sequentially rolled and connected between the two sets of transmission rollers (22).

3. The fastener multi-station synchronous forming cold heading equipment according to claim 1, characterized in that: The clamping assembly (3) comprises: A movable frame (31) is slidably connected to the side of the frame (11) and is internally rotatably connected to at least six groups of first belt rollers (32); The support plate (33) is fixed on the side of the movable frame (31), and the second belt roller (34) is rotatably connected between the two groups of support plates (33). The first belt roller (32) and the second belt roller (34) of each group are connected in sequence through a belt (36); A driving member (35) is installed on the side of the support plate (33) and is used to drive the belt (36) through the second belt roller (34) for transmission; A first clamping frame (371) is slidably connected to the interior of the moving frame (31) and connected to the surface of the upper belt (36); A second clamping frame (372) is slidably connected to the interior of the moving frame (31) and connected to the surface of the lower belt (36); The clamping groove (38) is provided on the side surfaces of the first clamping frame (371) and the second clamping frame (372).

4. The fastener multi-station synchronous forming cold heading equipment according to claim 3, characterized in that: The placement component (4) comprises: The guide frame (41) is fixed to the side of the frame (11), and is slidably connected to a sliding frame (42) on the surface. The sliding frame (42) is provided with a V-shaped groove (43); The cylinder (44) is fixed to the side of the frame (11), and the side of the guide frame (41) is connected to the output end of the cylinder (44); Vertical slots (45) are provided on the frame (11), and the ends of two groups of vertical slots (45) are connected by a transverse slot (46); A T-shaped frame (48) is fixed on the upper side of the mobile frame (31). A sliding column (47) is fixed on the T-shaped frame (48). The middle part of the sliding column (47) is slidably connected to the inside of the V-shaped groove (43), and the end part is slidably connected to the inside of the vertical groove (45) or the horizontal groove (46).

5. The fastener multi-station synchronous forming cold heading equipment according to claim 3, characterized in that: The frame (11) is provided with a U-shaped groove (51). A sliding pin is fixed on the side of the moving frame (31), and the sliding pin is slidably connected inside the U-shaped groove (51). The specifications and directions of the U-shaped groove (51) are the same as those of the vertical groove (45) and the horizontal groove (46).

6. The fastener multi-station synchronous forming cold heading equipment according to claim 1, characterized in that: The cold heading assembly (6) includes: A slide bar (61) is slidably connected inside the frame (11). There are two sets of slide bars (61) installed. One ends of the two sets of slide bars (61) are connected by a stamping frame (62). A sliding groove (63) is provided on the stamping frame (62). An arc-shaped groove (64) is provided on the stamping frame (62). The two sets of arc-shaped grooves (64) are connected end to end, and the two ends of the two sets of arc-shaped grooves (64) are respectively connected to the sliding groove (63). A fixed frame (65) is connected to the cold heading machine (1), and an actuator (66) is installed on the side surface. A rotating frame (67) is rotatably connected to the fixed frame (65). One end is connected to the output end of the actuator (66), and the other end is fixed with a sliding column (68). The sliding column (68) is sequentially slidably connected inside the sliding groove (63) and the arc-shaped groove (64).

7. The fastener multi-station synchronous forming cold heading equipment according to claim 6, characterized in that: The feeding assembly (7) includes: A rotating die (71) is rotatably connected to the frame (11). A half gear (77) is installed on the surface of the rotating die (71). The adjacent two sets of rotating dies (71) are connected by the half gear (77). A groove (72) is provided on the surface of the rotating die (71). The two ends of the two sets of grooves (72) are connected by an inclined groove (73). A sliding shaft (74) is fixed on the slide bar (61), and the end is slidably connected inside the groove (72) or the inclined groove (73). A pushing frame (75) is connected between the ends of the two sets of slide bars (61) far from the stamping frame (62). A feeding rod (76) is slidably connected inside the rotating die (71), and the end is fixed on the pushing frame (75).

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