A fastener multi-station synchronous forming cold heading equipment

Abstract

The application discloses a kind of fastener multi-station synchronous forming cold heading equipment, belong to cold heading technical field, comprising: cold header, rack is fixed on cold header;Feeding assembly is rotatably connected on cold header;Clamping assembly is slidably connected on the side of rack;Placement assembly is slidably connected on the side of rack;Cold heading assembly is intermittently reciprocatingly slidably connected on cold header.The application is provided with four groups of punches, four groups of punches are in turn preforming punch, initial upsetting punch, fine upsetting punch, forming punch.Metal material is continuously, gradually deformed by four groups of punches, and finally the shape of the required part is formed.Punching frame will drive four groups of punches to cold heading the metal material inside four groups of rotating dies respectively when moving, after cold heading, four groups of punches will stay for a certain period of time, prevent metal material from rebounding under the action of residual stress in metal, ensure the cold heading effect of metal material.

Description

Technical Field

[0001] This invention relates to the field of cold heading technology, specifically to a multi-station synchronous cold heading equipment for fasteners. Background Technology

[0002] Cold heading technology utilizes the principle of plastic deformation of metal materials at room temperature. External force and speed are applied to metal wire through a die, forcing it to undergo plastic flow and extruding parts of the desired shape and size. It is primarily used in the manufacture of fasteners such as screws, nuts, and nails. As a core process in metal plastic forming, cold heading plays a crucial role in the manufacturing of aerospace aluminum forgings, particularly in the production of high-performance fasteners and complex thin-walled structural components, where it offers significant advantages.

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

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a multi-station synchronous cold heading equipment for fasteners to solve the problems mentioned in the background.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A multi-station synchronous cold heading machine for fasteners includes:

[0007] Cold heading machine, with a fixed frame on it;

[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, slidably connected to the side of the frame, is used to grip metal materials;

[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 and reciprocally slidably connected to the cold heading machine, and is used to drive four sets of punches to perform orderly cold heading of metal materials in sequence;

[0012] The feeding assembly is slidably connected inside 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 embodiment of the present invention, the feeding assembly includes: a feeding seat fixed on a cold heading machine; a transmission roller rotatably connected to the feeding seat, wherein a drive motor for driving the transmission roller to rotate is installed inside the feeding seat, and the metal material is sequentially rolled between the two sets of transmission rollers.

[0014] As a preferred embodiment of the present invention, the clamping assembly includes: a movable frame slidably connected to the side of the machine frame, with at least six sets of first belt rollers rotatably connected inside; a support plate fixed to the side of the movable frame, with a second belt roller rotatably connected between two sets of support plates, and each set of first belt rollers and second belt rollers connected sequentially by a belt; a driving member installed on the side of the support plate for driving the belt through the second belt rollers; a first clamping frame slidably connected inside the movable frame and connected to the surface of the upper belt; a second clamping frame slidably connected inside the movable frame and connected to the surface of the lower belt; and clamping grooves formed on the sides of the first clamping frame and the second clamping frame.

[0015] As a preferred embodiment of the present invention, the placement assembly includes: a guide frame, fixed to the side of the frame, with a sliding frame slidably connected to its surface, and a V-shaped groove formed on the sliding frame; a cylinder, fixed to the side of the frame, with the side of the guide frame connected to the output end of the cylinder; vertical grooves, formed on the frame, with the ends of two sets of vertical grooves connected by a horizontal groove; and a T-shaped frame, fixed to the upper side of the movable frame, with a sliding column fixed on the T-shaped frame, the middle part of the sliding column slidably connected inside the V-shaped groove, and the end slidably connected inside the vertical groove or the horizontal groove.

[0016] As a preferred embodiment of the present invention, the frame is provided with an incline groove, and a sliding pin is fixed on the side of the movable frame. The sliding pin is slidably connected inside the incline groove, and the specifications and direction of the incline groove are consistent with those of the vertical groove and the horizontal groove.

[0017] As a preferred embodiment of the present invention, the cold heading assembly includes: a slide rod slidably connected inside the frame, two sets of slide rods are installed, one end of the two sets of slide rods is connected by a stamping frame, and the stamping frame is provided with a sliding groove; an arc-shaped groove is provided on the stamping frame, the two sets of arc-shaped grooves are connected end to end, and the two ends of the two sets of arc-shaped 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, the sliding column being slidably connected inside the sliding groove and the arc-shaped groove in sequence.

[0018] As a preferred embodiment of the present invention, the feeding assembly includes: a rotating mold rotatably connected to the frame, with a half gear mounted on the surface of the rotating mold, and two adjacent sets of rotating molds connected by the half gear; a groove formed on the surface of the rotating mold, with the ends of two sets of grooves connected by an inclined groove; a sliding shaft fixed to a slide rod, with its end slidably connected inside the groove or inclined groove; a pusher connected between the ends of the two sets of slide rods away from the stamping frame; and a feeding rod slidably connected inside the rotating mold, with its end fixed to the pusher.

[0019] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: The present invention has four sets of punches, which are, in sequence, a pre-forming punch, a preliminary upsetting punch, a fine upsetting punch, and a forming punch. Through the continuous and gradual cold upsetting deformation of the metal material by the four sets of punches, the desired part shape is finally formed.

[0020] During operation, the stamping frame 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 to prevent the metal material from rebounding due to residual stress within the metal, thus ensuring the effectiveness of the cold forging. Before cold forging by the four sets of punches, the rotating die rotates on the frame under the action of the inclined groove and sliding shaft, ensuring that the end of the metal material smoothly slides into the interior of the rotating die to complete the cold forging.

[0021] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

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

[0023] Figure 2 This is a schematic diagram of the internal structure of the moving frame of the fastener multi-station synchronous forming cold heading equipment provided in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the rotating mold in the fastener multi-station synchronous forming cold heading equipment provided in an embodiment of the present invention.

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

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

[0027] Reference numerals: 1. Cold heading machine; 11. Frame; 12. Punch; 2. Feeding assembly; 21. Feed seat; 22. Drive roller; 23. Metal material; 3. Clamping assembly; 31. Moving frame; 32. First belt roller; 33. Support plate; 34. Second belt roller; 35. Drive component; 36. Belt; 371. First clamping frame; 372. Second clamping frame; 38. Clamping groove; 4. Placement assembly; 41. Guide frame; 42. Sliding frame; 43. V-shaped 44. Cylinder; 45. Vertical groove; 46. Horizontal groove; 47. Sliding column; 48. T-shaped frame; 51. C-shaped groove; 6. Cold heading assembly; 61. Sliding rod; 62. Stamping frame; 63. Sliding groove; 64. Arc groove; 65. Fixed frame; 66. Actuator; 67. Rotating frame; 68. Sliding 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 Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the 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 merely illustrative and not intended to limit the invention.

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

[0030] See Figures 1-5 A multi-station synchronous cold heading machine for fasteners, comprising:

[0031] Cold heading machine 1, with a frame 11 fixed on it;

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

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

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

[0035] The cold heading assembly 6 is intermittently and reciprocally slidably connected to the cold heading machine 1, and is used to drive four sets of punches 12 to perform orderly cold heading of the metal material 23 in sequence.

[0036] The feeding assembly 7 is slidably connected inside 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, such as Figure 3 and Figure 4 As shown, the feeding assembly 2 includes:

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

[0039] The drive roller 22 is rotatably connected to the feed seat 21. The feed seat 21 is equipped with a drive motor for rotating the drive roller 22. The metal material 23 is sequentially rolled between the two sets of drive rollers 22.

[0040] In this embodiment, when cold heading the metal material 23, the metal material 23 is first placed between two sets of transmission rollers 22, and the drive motor inside the feed seat 21 is turned on, so that the transmission rollers 22 drive the metal material 23 in contact with them to be conveyed inside the frame 11, thereby feeding the metal material 23.

[0041] In one embodiment of the present invention, such as 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 at least six sets of first belt rollers 32 are rotatably connected inside.

[0043] Support plate 33 is fixed to the side of the movable frame 31. A second belt roller 34 is rotatably connected between the two sets of support plates 33. Each set of first belt roller 32 and second belt roller 34 is connected in sequence by belt 36. Specifically, pulleys are installed on the surface of the first belt roller 32 and the second belt roller 34.

[0044] The drive unit 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.

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

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

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

[0048] In this embodiment, when the drive unit 35 is turned on, the output end of the drive unit 35 drives the second belt roller 34 to rotate clockwise within the support plate 33. The second belt roller 34 drives each group of first belt rollers 32 to rotate synchronously within the moving frame 31 via the belt 36. As a result, the belt 36 drives 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 second clamping frames 372 clamp and fix the metal material 23.

[0049] like Figure 1 or Figure 2 As shown, four sets of the first clamping frame 371 and the second clamping frame 372 are installed. The four sets of first clamping frames 371 and second clamping frames 372 are of the same specifications, and the specifications of the metal material 23 are also the same. The first clamping frames 371 and second clamping frames 372 can simultaneously clamp and fix the four sets of metal materials 23, avoiding slippage of the belt 36 and improving the stability of clamping the metal material 23. When it is necessary to release the metal material 23, simply activate the drive component 35, causing the output end of the drive component 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 releasing the metal material 23.

[0050] In one embodiment of the present invention, such as 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 a sliding frame 42 is slidably connected to its surface. A V-groove 43 is provided on the sliding frame 42.

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

[0053] Vertical slots 45 are formed on the frame 11, and the ends of two sets of vertical slots 45 are connected by horizontal slots 46.

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

[0055] In this embodiment, the cylinder 44 is activated, causing the output end of the cylinder 44 to drive the sliding frame 42 to slide to the right on the surface of the guide frame 41. As the sliding frame 42 slides, it causes the V-groove 43 on its surface to slide synchronously. Figure 5As shown, the sliding column 47 is initially 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 the sliding column 47 slides upward, it will drive the moving frame 31 to slide upward synchronously through the T-shaped frame 48.

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

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

[0058] In summary, during the sliding motion of the sliding frame 42 to the right, the sliding column 47 will move vertically upwards, then horizontally to the right, and finally vertically downwards along the tracks of the vertical groove 45 and the horizontal groove 46. Thus, the sliding column 47 will drive the moving frame 31 to move synchronously via the T-shaped frame 48. Therefore, when the first clamping frame 371 and the second clamping frame 372 inside the moving 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 aforementioned manner. Thus, each set of first clamping frames 371 and second clamping frames 372 will pick up the clamped metal material 23 and move it to the next workstation for cold heading.

[0059] When each set of first clamping frames 371 and second clamping frames 372 picks up the metal material 23 it holds and moves it to the next work station, the cold heading assembly 6 can cold head each set of metal material 23. During the cold heading process, the output end of the cylinder 44 drives the sliding frame 42 to slide to the left and in the opposite direction. As a result, the sliding column 47 will drive the moving frame 31 to return along the original path through the T-shaped frame 48, so that the moving frame 31 drives the first clamping frame 371 and the second clamping frame 372 back to the initial position, which is convenient for clamping and transmitting the next set of metal material 23.

[0060] In one embodiment of the present invention, such as Figure 2 and Figure 5As shown, the frame 11 has an incised groove 51, and a sliding pin is fixed to the side of the movable frame 31. The sliding pin is slidably connected inside the incised groove 51. The specifications and direction of the incised 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 incised groove 51, so that the movable frame 31 will be guided and limited under the action of the incised 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, such as Figure 2 and Figure 4 As shown, the cold heading assembly 6 includes:

[0062] The slide rod 61 is slidably connected inside the frame 11. Two sets of slide rods 61 are installed. One end of the two sets of slide rods 61 is connected by a stamping frame 62. The stamping frame 62 is provided with a sliding groove 63.

[0063] Arc-shaped grooves 64 are formed 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 grooves 63.

[0064] The fixed frame 65 is connected to the cold heading machine 1, and the actuator 66 is installed on the side. The drive component 35 and the actuator 66 are specifically servo motors.

[0065] The 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 slidably connected to the sliding groove 63 and the arc groove 64 in sequence. The rotation radius of the sliding column 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 activated, the output end of the actuator 66 will drive the sliding column 68 to rotate circumferentially via the rotating frame 67, such as... Figure 4 As shown, when the rotating frame 67 drives the sliding column 68 to rotate clockwise, the sliding column 68 will first slide clockwise in the lower arc groove 64. During the sliding process of the sliding column 68 in the lower arc groove 64, the position of the stamping frame 62 will not move.

[0067] When the slide column 68 slides to the leftmost position of the arc groove 64, the slide column 68 will slide into the interior of the left sliding groove 63 as it continues to slide clockwise. During the sliding process of the slide column 68 in the left sliding groove 63, the stamping frame 62 will drive the slide rod 61 to slide inward on the frame 11 under the action of the slide column 68 and the left sliding groove 63. When the stamping frame 62 slides, it will drive the punch 12 to slide closer to the frame 11.

[0068] When the slider 68 rotates to the leftmost point, it slides to the leftmost position in the left sliding groove 63. The slider 68 continues to rotate clockwise. After the slider 68 slides out of the left sliding groove 63, it will slide into the upper arc groove 64.

[0069] As the slide column 68 slides inside the upper arc groove 64, the stamping frame 62 drives the punch 12 to slide to the position closest to the frame 11. After that, as the slide column 68 slides clockwise inside the upper arc groove 64, the position of the stamping frame 62 will not change.

[0070] After the slide column 68 slides clockwise out of the upper arc groove 64, it will slide into the right sliding groove 63. During the sliding process of the slide column 68 in the right sliding groove 63, the stamping 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 column 68 and the right sliding groove 63. When the stamping frame 62 slides, it will drive the punch 12 to slide away from the frame 11.

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

[0072] In summary, during the circumferential rotation of the slide column 68, the stamping frame 62 will slide sequentially towards the frame 11, and pause for a certain period of time when it reaches the approaching position; thereafter, the stamping frame 62 will slide away from the frame 11, and similarly pause for a certain period of time when it reaches the away position.

[0073] When the stamping frame 62 moves, it drives four sets of punches 12 to cold-forge the metal material 23 inside the four sets of rotating dies 71. This causes the four sets of metal material 23 to slide inside the rotating dies 71 under the pressure of the four sets of punches 12 until all four sets of metal material 23 have slid to the innermost position of the four sets of rotating dies 71. At this time, the four sets of metal material 23 have completed cold-forging under the action of the four sets of punches 12. After cold-forging, the four sets 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, thus ensuring the cold-forging effect of the metal material 23.

[0074] After the four sets of punches 12 have completed the cold forging of the four sets of metal materials 23, the four sets of punches 12 will slide in the opposite direction. When the four sets of punches 12 slide to the farthest position, the four sets of punches 12 will also pause for a certain period of time to allow time for the replacement of the four sets of metal materials 23.

[0075] Furthermore, the specifications of the four sets of punches 12 are different. The four sets of punches 12 are, in order, a pre-forming punch, a preliminary upsetting punch, a fine upsetting punch, and a forming punch. Through the continuous and gradual cold upsetting deformation of the metal material 23 by the four sets of punches 12, the desired part shape (such as bolts, nuts, pins, etc.) is finally formed.

[0076] When the four sets of punches 12 slide to their furthest positions, as described above, they will pause for a certain period of time. During this pause, the drive unit 35 will activate, allowing the four sets of first clamping frames 371 and second clamping frames 372 to clamp and fix the four sets of metal materials 23 respectively. After the four sets of metal materials 23 are fixed, the cylinder 44 drives the sliding frame 42 to slide to the right, causing the sliding column 47 to drive the moving frame 31 to move along the trajectory of the vertical groove 45 and the horizontal groove 46 via the T-shaped frame 48. Thus, the moving frame 31 will drive the metal materials 23 to the next workstation for cold forging via the first clamping frames 371 and second clamping frames 372. When the four sets of punches 12 are cold forging the four sets of metal materials 23 respectively, the moving frame 31 will drive the first clamping frames 371 and second clamping frames 372 to return along the original path, facilitating the gripping and transmission of the next set of metal materials 23.

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

[0078] Rotary mold 71 is rotatably connected to frame 11. Half gear 77 is installed on the surface of rotary mold 71, and two adjacent sets of rotary molds 71 ​​are connected by half gear 77.

[0079] Grooves 72 are formed on the surface of rotating mold 71, and the ends of two sets of grooves 72 are connected by inclined grooves 73.

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

[0081] Pusher 75 is connected between the ends of the two sets of slide rods 61 that are away from the stamping frame 62;

[0082] The feeding rod 76 is slidably connected inside the rotating mold 71, and its end is fixed on the pusher 75.

[0083] In this embodiment, as the four sets of punches 12 slide away from the frame 11, the stamping frame 62 drives the pusher 75 to slide synchronously through the slide rod 61. As a result, the pusher 75 drives the four sets of feeding rods 76 to slide towards the frame 11 in the four sets of rotating dies 71, so that the feeding rods 76 can eject the metal material 23 that has undergone preliminary cold forging in the rotating die 71. After the metal material 23 is ejected, the corresponding first clamping frame 371 and second clamping frame 372 will clamp and fix the metal material 23 and pick it up to the next station to continue cold forging.

[0084] As the four sets of punches 12 slide towards the frame 11, the pusher 75, pushed by the two sets of slide rods 61, pulls the four sets of feed rods 76 out of their respective rotating dies 71, creating space for the forming of the metal material 23. During the sliding of the two sets of slide rods 61 by the stamping frame 62, the two sets of slide rods 61 drive their side sliding shafts 74 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 outermost rotating die 71 rotates, it drives the adjacent set of rotating dies 71 to rotate synchronously through the connection of two sets of half-gears 77. This ensures that when the four sets of punches 12 cold-forge the metal material 23, the end of the metal material 23 can smoothly slide into the interior of the rotating die 71.

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

[0086] The working principle of this invention is as follows: This invention is equipped with four sets of punches 12, which are sequentially a pre-forming punch, a preliminary upsetting punch, a fine upsetting punch, and a forming punch. Through the continuous and gradual cold upsetting deformation of the metal material 23 by the four sets of punches 12, the desired part shape is finally formed.

[0087] When the four sets of punches 12 slide to their furthest positions, they will pause for a certain period of time. During this pause, the drive unit 35 is activated, causing the four sets of first clamping frames 371 and second clamping frames 372 to clamp and fix the four sets of metal materials 23 respectively. After the four sets of metal materials 23 are fixed, the cylinder 44 drives the sliding frame 42 to slide to the right, causing the sliding column 47 to drive the moving frame 31 to move along the trajectory of the vertical groove 45 and the horizontal groove 46 through the T-shaped frame 48. Thus, the moving frame 31 will drive the metal materials 23 to the next workstation for cold forging through the first clamping frames 371 and second clamping frames 372. When the four sets of punches 12 are cold forging the four sets of metal materials 23 respectively, the moving frame 31 drives the first clamping frames 371 and second clamping frames 372 to return along the original path, which facilitates the gripping and transmission of the next set of metal materials 23.

[0088] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the 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 within the protection scope of the present invention.

Claims

1. A multi-station synchronous cold heading equipment for fasteners, characterized in that, include: Cold heading machine (1), with a frame (11) fixed on the cold heading machine (1); The feeding assembly (2) is rotatably connected to the cold heading machine (1) and is used to drive the metal material (23) to feed. The clamping assembly (3) is slidably connected to the side of the frame (11) for gripping the metal material (23); The placement component (4) is slidably connected to the side of the frame (11) and connected to the clamping component (3) for cooperating with the clamping component (3) to realize multi-station transmission of metal material (23). The placement component (4) includes: a guide frame (41) fixed to the side of the frame (11), with a sliding frame (42) slidably connected to its surface, and a V-groove (43) provided on the sliding frame (42); and a cylinder (44) fixed to the side of the frame (11). The sliding frame (42) is connected to the output end of the cylinder (44) on the side; the vertical groove (45) is opened on the frame (11), and the ends of the two sets of vertical grooves (45) are connected by the horizontal groove (46); the T-shaped frame (48) is fixed on the upper side of the moving frame (31), and the 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 is slidably connected to the inside of the vertical groove (45) or the horizontal groove (46); The cold heading assembly (6) is intermittently and reciprocally slidably connected to the cold heading machine (1) to drive four sets of punches (12) to perform orderly cold heading of the metal material (23); The feeding assembly (7) is slidably connected within 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 achieve the rotation of the metal material (23). After cold heading, it is used to cooperate with the cold heading assembly (6) to achieve the unloading of the metal material (23) after cold heading. The feeding assembly (7) includes: a rotating mold (71) rotatably connected to the frame (11), with a half gear (77) installed on the surface of the rotating mold (71), and two adjacent sets of rotating molds (71) connected by the half gear (77); and a groove (72) formed on the rotating mold (71). On the surface, the ends of the two sets of grooves (72) are connected by a sloping groove (73); the sliding shaft (74) is fixed on the slide rod (61), and its end is slidably connected inside the groove (72) or the sloping groove (73). When the sliding shaft (74) slides into the sloping groove (73), the rotating mold (71) will rotate on the frame (11) under the action of the sloping groove (73) and the sliding shaft (74); the push frame (75) is connected between the ends of the two sets of slide rods (61) away from the stamping frame (62); the feeding rod (76) is slidably connected inside the rotating mold (71), and its end is fixed on the push frame (75); The clamping assembly (3) includes: The movable frame (31) is slidably connected to the side of the frame (11), and at least six sets of first belt rollers (32) are rotatably connected inside; Support plate (33) is fixed on the side of the movable frame (31). A second belt roller (34) is rotatably connected between the two sets of support plates (33). Each set of first belt roller (32) and second belt roller (34) is connected in sequence by belt (36). The drive unit (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; The first clamping frame (371) is slidably connected inside the movable frame (31) and connected to the surface of the belt (36) on the upper side; The second clamping frame (372) is slidably connected inside the movable frame (31) and connected to the surface of the belt (36) on the lower side; Clamping grooves (38) are formed on the sides of the first clamping frame (371) and the second clamping frame (372); The cold heading assembly (6) includes: a slide rod (61) slidably connected inside the frame (11), two sets of slide rods (61) are installed, and one end of the two sets of slide rods (61) are connected by a stamping frame (62), and a sliding groove (63) is provided on the stamping frame (62); Arc-shaped grooves (64) are formed 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 grooves (63). A fixed frame (65) is connected to the cold heading machine (1), and an actuator (66) is installed on the side; The 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 slidably connected to the sliding groove (63) and the arc groove (64) in sequence.

2. The fastener multi-station synchronous cold heading equipment according to claim 1, characterized in that, The feeding assembly (2) includes: The feed seat (21) is fixed on the cold heading machine (1); The drive roller (22) is rotatably connected to the feed seat (21). The feed seat (21) is equipped with a drive motor for driving the drive roller (22) to rotate. The metal material (23) is rolled between the two sets of drive rollers (22) in sequence.

3. The fastener multi-station synchronous cold heading equipment according to claim 1, characterized in that, The frame (11) is provided with an incline groove (51), and a sliding pin is fixed on the side of the movable frame (31). The sliding pin is slidably connected inside the incline groove (51). The specifications and direction of the incline groove (51) are consistent with the vertical groove (45) and the horizontal groove (46).

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