[0032] Such as Figure 1~ Figure As shown in Fig. 8, the main mold rotary high-speed cold heading machine disclosed by the present invention includes a body 1, a power device installed on the body 1, a wire feeding device 3, a cutting and feeding device 4, and a punch Device 5 and material return device 6; wherein the power device 2 includes a drive motor 21, a gearbox 22, a crankshaft 23 and a countershaft 24. The output end of the drive motor 21 is connected to the gearbox 22, and the output end of the gearbox 22 is through the pulley, Transmission belt( Figure Not shown in) drive connected to the crankshaft 23, the crankshaft 23 is connected to the countershaft 24 via a gear pair transmission; the punching device 5 includes a main die 51, at least two punching dies 52 and a die slide 53, the die 52 is mounted on the die slide On the seat 53, the die slide seat 53 is slidably fitted on the body 1. The upsetting device 5 also includes a main mold rotating mechanism. The main mold rotating mechanism includes a rotary main mold base 54 which is rotatably assembled on the fuselage 1. The main mold base 54 is sequentially provided with A number of upsetting stations I and II corresponding to the die 52 one by one, and a returning station III corresponding to the position of the material returning device 6; the returning station III and each upsetting station I and II are all arranged on the same circle; Each station of the mold base 54 is respectively provided with a main mold 51, and the main mold base 54 is connected with an intermittent indexing device that drives it to rotate intermittently to realize the switch of the main mold 51. Each die 52 is positioned and installed on the die slide 53 and corresponding to the corresponding cold heading station I and II positions. In this specific embodiment, the cold heading machine is a three-die two-stroke cold heading machine. The main die adopts three designs. There are two die matching with the main die (primary heading die and fine heading die). The cold heading machine completes the same processing, but each station is arranged separately on the main mold base, and the main mold can be switched between each station through the rotation of the main mold base, which can greatly improve the production efficiency; at the same time, between each station The position switch is more stable and reliable, with higher precision and compact structure. Of course, if the installation space allows, the design of more than three main models can also be applied.
[0033] The intermittent indexing device includes an intermittent rotating gear 551 and a driving wheel 552. The intermittent rotating gear 551 is mounted on a main mold base 54 which is fitted with a damping component. The driving wheel 552 passes through a supporting shaft 553. Assembled on the fuselage 1 in a rotational movement, the outer circumference of the driving wheel 552 is provided with an arc-shaped rack 5521 intermittently meshing with the intermittently rotating gear 551. The arc-shaped rack 5521 extends along the rotation direction of the driving wheel 552. The length of the shaped rack 5521 is adapted to the switching distance of the main mold 51 between adjacent stations, and the driving wheel 552 is connected with a power input mechanism for driving it to rotate. When the arc-shaped rack 5521 on the driving wheel 552 meshes with the intermittent rotation gear 551, the intermittent gear 551 is driven to rotate a certain angle, and the main mold base 54 is driven to rotate a certain angle, so as to realize the station switching of the main mold 51; When the rack 5521 is disengaged from the intermittent rotation gear 551, the main mold base 54 stops rotating. Under the action of the damping component, the main mold base 54 realizes the position lock; it has the advantages of simple structure, convenient implementation, and stable and reliable station switching; and The damping component is used to lock the position of the main mold base, and the damping component can also realize the stable and reliable operation of the main mold base, and it is also convenient for the installation and adjustment of the main mold base, and is easy to realize. The function of the intermittent indexing device is to drive the main mold to rotate at a certain angle intermittently (at a certain time interval). Of course, as a feasible solution of the present invention, the intermittent indexing device can also adopt other structural designs, such as a sheave mechanism, with The stepping motor drive of the deceleration mechanism, etc. (If there are other mechanisms that can be implemented, but the effect is poor, they can be supplemented to better meet the support problem), but the use of other mechanisms has the problem of inconvenience and poor stability, so the present invention is preferred The structural design in this specific embodiment is adopted.
[0034] In this specific embodiment, the power input mechanism is connected to the driving wheel 552 and the counter shaft 24 of the power unit 2. The power input mechanism includes a driving bevel gear 561, a driven bevel gear 562, a first linkage shaft 563, and a cardan shaft 564. And the second linkage shaft 565, the driving bevel gear 561 is mounted on the counter shaft 24 of the power unit 2, the driven bevel gear 562 is mounted on the first linkage shaft 563, the driving bevel gear 561 meshes with the driven bevel gear 562, A linkage shaft 563 is connected to the cardan shaft 564, and the other end of the cardan shaft 564 is connected to the second linkage shaft 565 relative to the other end connected to the first linkage shaft 563. A first transmission gear is mounted on the second linkage shaft 565. 566, the first transmission gear 566 is meshed with a second transmission gear 567, and the first transmission gear 566 is coaxially connected with the driving wheel 552. Of course, as a feasible solution of the present invention, the power input mechanism can be realized by adopting an ordinary gear mechanism and setting up a power device separately, which results in inconvenient installation and arrangement, complicated mechanism, and at the same time, the coordination of the main die and the punching die and other devices has poor reliability. problem.
[0035] A number of arc-shaped strip holes 5671 extending and arranged in the direction of rotation are provided on the wheel disk of the second transmission gear 567. The driving wheel 552 is rotatably matched with the supporting shaft 553, and the wheel disk of the driving wheel 552 There is a screw hole 5522, the screw hole 5522 of the drive wheel 552 is screwed with a locking screw ( Figure Not shown), the second transmission gear 567 is locked on the driving wheel 552 by a locking screw, and the position can be adjusted. It is convenient to adjust the time with other devices to achieve the reliable cooperation between the switching timing of the main mold base and the die of the cold heading machine, improve the reliability of work, and have the advantages of convenient and reliable assembly and convenient debugging.
[0036] The damping assembly includes a first damping sleeve 571, a second damping sleeve 572, a connecting bolt 573, and a tension spring 574; the first damping sleeve 571 and the second damping sleeve 572 are coaxially spaced apart, The first damping sleeve 571 and the second damping sleeve 572 are movably assembled on the fuselage 1 and can slide axially along them (the first damping sleeve 571 and the second damping sleeve 572). The opposite ends of the two damping sleeves 572 are provided with chamfered surfaces 5711, 5712, and the chamfered surface 5711 of the first damping sleeve 571 and the chamfered surface 5721 of the second damping sleeve 572 are adapted to abut against the side wall of the main mold base 54 Above, one end of the screw of the connecting bolt 573 passes through the first damping sleeve 571 and is fixedly connected to the second damping sleeve 572. The first damping sleeve 571 and the tension spring 574 are movably sleeved on the connecting bolt 573 to expand The tension spring 574 is located at one end of the first damping sleeve 571 away from the second damping sleeve 572, one end of the tension spring 574 abuts against the end of the first damping sleeve 571, and the other end of the tension spring 574 abuts against the head of the connecting bolt 573 unit. Under the action of the tension spring, the first damping sleeve 571 is pushed against the main mold base 54, the tension spring 574 pushes the connecting bolt 573, and the connecting bolt 573 pulls the second damping sleeve 572 to the main mold base 54, Therefore, the first damping sleeve 571 and the second damping sleeve 572 are clamped on the main mold base 54 with reliable contact and reliable operation. At the same time, the chamfered surface contact is adopted. The contact area is large and the contact is reliable. The advantages.
[0037] Wherein, the second damping sleeve 572 is provided with a threaded hole, and the connecting bolt 573 is screwed into the threaded hole of the second damping sleeve 572. In this way, the connecting bolt can be screwed in and out to realize the adjustment of the compression amount of the tension spring, thereby realizing the adjustment of the damping force, which is convenient to use and reliable in operation.
[0038] In order to facilitate the installation of the main mold base, a mounting flange 58 is detachably installed on the fuselage 1; in this specific embodiment, an assembly hole is provided on the fuselage 1, and the assembly hole is detachably installed by bolts. Flange 58; the main mold base 54 is assembled in the cavity of the mounting flange 58, the main mold base 54 and the mounting flange 58 are rotationally matched, and the cutting die 41 of the cutting and feeding device 4 is mounted on the mounting flange 58 on; the cylindrical thrust bearing 581 between the main mold base 54 and the bottom of the assembly cavity, the cylindrical thrust bearing 581 can bear heavy loads and vibration loads without difficulty, ensuring the stable and reliable operation of the main mold base.
[0039] In this specific embodiment, such as Figure 7 and Figure As shown in 8, the unloading device 6 includes a rear support swing arm 61, a rear support link 62, and an eccentric wheel 63; the rear support swing arm 61 is hingedly mounted on the fuselage 1, and the rear support swing arm 61 warp beams and bearings are installed on the fuselage 1, the rear support passive rocker arm 61 is divided into an upper swing arm 611 and a lower swing arm 612 by a hinge point, and the upper swing arm 611 of the rear support passive rocker arm 61 is equipped with a discharge ejector 64, The discharge ejector rod 64 corresponds to the ejection station position III. The eccentric wheel 63 is eccentrically mounted on the secondary shaft 24 of the power unit 2, and one end of the rear support link 62 is mounted on the eccentric wheel 63. The rear support link 62 is The eccentric wheel 63 rotates and cooperates, the rear support link 62 and the eccentric wheel 63 are assembled through a bearing, and the other end of the rear support link 62 is hingedly connected to the lower swing arm 612 of the rear support swing arm 61. Wherein, the rear support link 62 is hingedly connected with a lever arm length adjustment seat 65, the lower swing arm 612 of the rear support swing arm 61 is provided with a strip-shaped mounting hole 613 extending along its length, and the lever arm length adjustment seat 65 It includes a seat body and a locking cover plate. The seat body is inserted into the strip-shaped mounting hole 613. The seat body and the locking cover plate are clamped on the rear support driven rocker arm 61 by bolts, thereby forming the lever arm length adjustment seat 65 Sliding fit in the strip-shaped mounting hole 613. The lever arm length adjusting seat 65 is threadedly fitted with an adjusting screw 66, the adjusting screw 66 is arranged along the length of the strip-shaped mounting hole 613, and the adjusting screw 66 is rotatably matched with the lower swing arm 612 of the driven rocker arm 61. It realizes the adjustment of the swing range of the passive rocker arm of the rear support, so as to realize the material return suitable for different length specifications. The adjustment is realized by the screw nut mechanism, and the adjustment operation is convenient and reliable.
