Blank ejection mechanism of multi-station cold header

Abstract

The invention discloses a blank ejection mechanism of a multi-station cold header, which belongs to the technical field of part processing and comprises a case. The assembled die sleeve comprises two groups of semicircular die sleeves which are oppositely arranged up and down, and the semicircular die sleeves are fixedly connected with the case; a material pushing die is movably connected in the assembled die sleeve; the pushing die comprises a semicircular pushing die, a semicircular groove and transverse rods, the transverse rods are arranged on the front end face and the rear end face of the inner end of the semicircular die sleeve, the semicircular groove is formed in the middle of the outer end of the semicircular pushing die, and the outer wall of the semicircular groove is in attached sliding connection with the inner walls of the transverse rods; the material pushing die is provided with a material pushing assembly; the pushing assembly comprises a push rod, a pushing assembly and a Z-shaped adjusting assembly, the push rod is connected with the machine box, the push rod moves in the semicircular pushing die, the push rod is provided with the pushing assembly, and the pushing assembly is connected with the Z-shaped adjusting assembly. By means of the mode, the semi-circular material pushing die is prevented from being impacted by a blank when the blank slightly deviates, feeding is facilitated, the blank can enter the semi-circular material pushing die easily, and actual use is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing, and in particular to a blank ejecting mechanism of a multi-station cold heading machine. Background Art

[0002] A cold heading machine is a highly efficient, automated, specialized machine tool used to manufacture bolts, nuts, rivets and other parts. Its working principle is to first place the blank in the mold of an automatic cold heading machine or press at room temperature, then apply pressure to the mold, and use the relative movement of the upper and lower molds to form the blank in the mold cavity.

[0003] For example, Chinese patent CN106466700B discloses a multi-station cold heading machine blank ejection mechanism, which includes an ejection support arm pivotally connected to the cold heading machine platform and driven by a flywheel, a push rod connected to the ejection support arm, and an ejector pin arranged at the front end of the push rod. The ejection support arm swings under the drive of the flywheel, thereby driving the ejector pin connected to the push rod to move forward and backward to eject the blank in the material removal die. The multi-station cold heading machine blank ejection mechanism of the present invention has accurate material removal and a rapid material removal process without abnormal noise. Compared with the original ejection mechanism, it has higher material removal accuracy, and the ejection mechanism is easy to operate and adjust, and has excellent use effect.

[0004] However, the inner diameter of the push die is fixed. As the use time increases, the clamping structure of the cold heading machine will cause the blank to move and shift due to wear. When the blank enters the push die, it will not be able to accurately align with the push die, which is not conducive to practical use.

[0005] Based on this, the present invention designs a multi-station cold heading machine blank ejection mechanism to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a blank ejection mechanism for a multi-station cold heading machine.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A blank ejection mechanism for a multi-station cold heading machine includes a chassis:

[0009] The end of the chassis close to the movable mold is fixedly installed with assembled mold sleeves at equal intervals;

[0010] The assembled mold sleeve includes two groups of semicircular mold sleeves, and the two groups of semicircular mold sleeves are arranged opposite to each other up and down, and the semicircular mold sleeves are fixedly connected to the chassis;

[0011] The assembled mold sleeve is movably connected with a pusher mold that can be opened horizontally;

[0012] The push die comprises a semicircular push die, a semicircular groove and a cross bar. The front and rear end surfaces of the inner end of the semicircular die sleeve are both provided with cross bars. The middle end of the outer end of the semicircular push die is fixedly connected with a semicircular groove. The outer wall of the semicircular groove is fitted and slidably connected with the inner wall of the cross bar.

[0013] The pusher die is connected with a pusher assembly for pushing out the blank in the semicircular pusher die and for opening and closing the semicircular pusher die outwards;

[0014] The pushing assembly includes a pushing rod, a pushing assembly and a Z-shaped adjusting assembly. The pushing rod is slidingly connected to the chassis, the pushing rod moves in the semicircular pushing die, the pushing rod is symmetrically fixedly connected with the pushing assembly at the position in the chassis, the pushing assembly is movably connected to the Z-shaped adjusting assembly, the Z-shaped adjusting assembly is fixedly connected to the semicircular pushing die, and during the movement of the pushing rod toward the semicircular pushing die: before the pushing assembly contacts the turning part of the Z-shaped adjusting assembly, the semicircular pushing die is in a closed state, when the pushing assembly begins to contact the turning part of the Z-shaped adjusting assembly, the Z-shaped adjusting assembly drives the semicircular pushing die to move outward from the closed state and starts to open, when the pushing assembly separates from the turning part of the Z-shaped adjusting assembly, the semicircular pushing die opens to the maximum state, and is always in the open state when the pushing assembly continues to move, and during the movement of the push rod in the direction away from the semicircular pushing die, the semicircular pushing die recovers from the open state to the closed state.

[0015] Furthermore, the pushing assembly includes a first cross block and a first bearing. The left and right side walls at the middle end of the push rod are fixedly connected to the first cross block. The outer end of the first cross block is rotatably connected to the first bearing. The first bearing is movably connected to the Z-shaped adjustment assembly, and the first cross block is movably connected to the follow-up locking assembly.

[0016] Furthermore, the Z-shaped adjustment assembly includes a first transverse groove, a first oblique groove, a second transverse groove and a first transverse plate. The first transverse plate is fixedly mounted on the rear side wall of the semicircular push die. The first transverse plate is provided with a second transverse groove, a first oblique groove and a first transverse groove from front to back. The second transverse groove is closer to the push rod than the first transverse groove.

[0017] Furthermore, the first inclined groove is a bending portion of the Z-shaped adjustment assembly.

[0018] Furthermore, the follower locking assembly includes a locking assembly, an unlocking follower assembly and a locking follower assembly, the unlocking follower assembly is connected to the chassis, the locking follower assembly is connected to the push rod, the locking follower assembly is connected to the unlocking follower assembly, the unlocking follower assembly is connected to the locking assembly, and the locking assembly is connected to the semicircular pushing die.

[0019] Furthermore, the locking assembly includes a positioning rod, a U-shaped plate, a fixing rod and a positioning hole. The chassis is fixedly connected with the fixing rods at equal intervals near the inner wall of the semicircular pushing die. The U-shaped plate is slidably connected to the fixing rods through sliding holes. The U-shaped plate is fixedly connected with the positioning rods near the side wall of the semicircular pushing die. The side wall of the semicircular pushing die near the U-shaped plate is provided with a positioning hole that is plugged into the positioning rod, and the U-shaped plate is connected to the locking follower assembly.

[0020] Furthermore, the locking follower assembly includes a transverse shaft, a first rack, a third transverse block, a second rack and a gear. The inner wall of the chassis rotates with the transverse shaft through a bearing. The transverse shaft is fixedly connected to a gear. The upper end of the gear is meshed with the first rack, and the lower end of the gear is meshed with the second rack. The second rack is fixedly connected to the U-shaped plate, and the end of the first rack away from the semicircular pushing die is fixedly connected to the third transverse block. The first rack is fixedly connected to the unlocking follower assembly, and the third transverse block is movably connected to a group of pushing assemblies.

[0021] Furthermore, a second sliding groove is provided at the upright portion of the U-shaped plate, a guide rod is slidably connected in the second sliding groove, and the U-shaped plate is fixedly connected to the end of the first rack close to the semicircular pusher die.

[0022] Furthermore, the unlocking follower assembly includes a movable rod, a third transverse groove, a second inclined groove, a second transverse plate, a slide plate, a first sliding groove, a second transverse block and a second bearing. The second transverse plate is fixedly installed at the end of the chassis away from the movable mold. The third transverse groove and the second inclined groove are sequentially opened from back to front. The distance from the front end of the second inclined groove to the movable rod is greater than the distance from the rear end of the second inclined groove to the movable rod. The third transverse groove or the second inclined groove is movably connected with the second bearing. When the second bearing contacts the front end of the second inclined groove, the second transverse block is separated from the slide plate and the positioning rod is separated from the positioning hole. The second shaft The bearing is fixedly connected to the slide plate, the movable rod is slidably connected to the slide plate through the movable groove, the chassis is slidably connected to the movable rod through the sliding hole, the end of the movable rod located in the chassis is fixedly connected to the first rack, the side wall of the push rod close to the movable rod is fixedly connected with the second cross block, the front side wall of the second cross block is slidably connected to the slide plate, and the second bearing moves to the front end of the second oblique groove before the first bearing contacts the first inclined groove during the movement of the push rod toward the movable mold, and the third cross block contacts the first cross block after the second cross block passes the rear side of the slide plate when the push rod moves away from the movable mold.

[0023] Beneficial effect: the clamping structure of the multi-station cold heading machine of the present invention moves to the outside of the semicircular die sleeve, the driving structure drives the push rod of the push assembly to move toward the semicircular push die, and the semicircular push die is in a closed state before the pushing assembly contacts the turning part of the Z-shaped adjusting assembly. When the pushing assembly begins to contact the turning part of the Z-shaped adjusting assembly, the Z-shaped adjusting assembly drives the semicircular push die to move outward from the closed state and start to open. When the pushing assembly separates from the turning part of the Z-shaped adjusting assembly, the semicircular push die opens to the maximum state, and is always in the open state when the pushing assembly continues to move. Then, after the clamping structure performs the material clamping shift, the movable die pushes the blank to move into the semicircular push die, and the blank pushes the push rod in the direction away from the semicircular push die. When returning from the open state to the closed state, the semicircular pusher die clamps the blank to prevent the blank from hitting the semicircular pusher die when it is slightly offset, which is beneficial to feeding, and facilitates the blank to enter the semicircular pusher die, which is beneficial to actual use; at the same time, before the semicircular pusher die is opened, the push rod drives the follow-up locking assembly to separate from the semicircular pusher die, and after the semicircular pusher die is merged, the follow-up locking assembly is plugged into the semicircular pusher die, and the semicircular pusher die is locked during cold heading, thereby ensuring the stability of the semicircular pusher die; in addition, the assembled die sleeve composed of the upper and lower groups of semicircular die sleeves is beneficial to the installation of the semicircular pusher die in the semicircular die sleeve, and the semicircular groove and the cross bar cooperate to guide the semicircular pusher die horizontally to prevent the semicircular pusher die from rotating, which is beneficial to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A three-dimensional diagram of a blank ejection mechanism of a multi-station cold heading machine according to the present invention Figure 1 ;

[0026] Figure 2 It is a front view of a blank ejection mechanism of a multi-station cold heading machine of the present invention;

[0027] Figure 3 It is a left view of a blank ejection mechanism of a multi-station cold heading machine of the present invention;

[0028] Figure 4 A three-dimensional diagram of a blank ejection mechanism of a multi-station cold heading machine according to the present invention Figure 2 ;

[0029] Figure 5 A three-dimensional diagram of a blank ejection mechanism of a multi-station cold heading machine according to the present invention Figure 3 ;

[0030] Figure 6 For along Figure 2 AA direction section Figure 1 ;

[0031] Figure 7 For along Figure 2 AA direction section Figure 2 ;

[0032] Figure 8 For along Figure 2 AA direction section Figure 3 ;

[0033] Fig. 9 For along Figure 3 BB direction cross-sectional view.

[0034] The numbers in the figure represent:

[0035] 1. Chassis; 2. Semicircular mold sleeve; 3. Pusher mold; 31. Semicircular pusher mold; 32. Semicircular groove; 33. Cross bar; 4. Pusher assembly; 41. Pusher rod; 42. First cross block; 43. First bearing; 44. First cross groove; 45. First inclined groove; 46. Second cross groove; 47. First cross plate; 5. Follow-up locking assembly; 51. Movable rod; 52. Third cross groove; 53. Second inclined groove; 54. Second cross plate; 55. Slide plate; 56. First sliding groove; 57. Second cross block; 58. Second bearing; 59. Positioning rod; 510. U-shaped plate; 511. Guide rod; 512. Cross shaft; 513. First rack; 514. Third cross block; 515. Fixed rod; 516. Second rack; 517. Second sliding groove; 518. Positioning hole; 519. Gear. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention will be further described below in conjunction with the embodiments.

[0038] For example, see Figure 1-9 , a multi-station cold heading machine blank ejection mechanism, comprising a chassis 1:

[0039] The end of the chassis 1 close to the movable mold is fixedly installed with assembled mold sleeves at equal intervals;

[0040] The assembled mold sleeve includes two groups of semicircular mold sleeves 2, and the two groups of semicircular mold sleeves 2 are arranged opposite to each other up and down, and the semicircular mold sleeves 2 are fixedly connected to the chassis 1;

[0041] A push die 3 which can be opened horizontally is movably connected in the assembled die sleeve;

[0042] The push die 3 includes a semicircular push die 31, a semicircular groove 32 and a cross bar 33. The cross bar 33 is provided on the front and rear end surfaces of the inner end of the semicircular die sleeve 2. The semicircular groove 32 is fixedly connected to the middle end of the outer end of the semicircular push die 31. The outer wall of the semicircular groove 32 is slidably connected to the inner wall of the cross bar 33.

[0043] The push die 3 is connected with a push assembly 4 for pushing out the blank in the semicircular push die 31 and for opening and closing the semicircular push die 31 outwards.

[0044] The pushing assembly 4 includes a pushing rod 41, a pushing assembly and a Z-shaped adjusting assembly. The pushing rod 41 is slidably connected to the chassis 1, and the pushing rod 41 moves in the semicircular pushing die 31. The pushing rod 41 is symmetrically fixedly connected with the pushing assembly at a position in the chassis 1, and the pushing assembly is movably connected to the Z-shaped adjusting assembly. The Z-shaped adjusting assembly is fixedly connected to the semicircular pushing die 31. During the movement of the pushing rod 41 toward the semicircular pushing die 31: before the pushing assembly contacts the turning part of the Z-shaped adjusting assembly, the semicircular pushing die 31 is in a closed state; when the pushing assembly begins to contact the turning part of the Z-shaped adjusting assembly, the Z-shaped adjusting assembly drives the semicircular pushing die 31 to move outward from the closed state and start to open; when the pushing assembly separates from the turning part of the Z-shaped adjusting assembly, the semicircular pushing die 31 is opened to the maximum state, and is always in the open state when the pushing assembly continues to move; during the movement of the pushing rod 41 in the direction away from the semicircular pushing die 31, the semicircular pushing die 31 recovers from the open state to the closed state.

[0045] The push rod 41 is connected to a follower locking assembly 5 for locking the semicircular pushing die 31. When the pushing assembly contacts the end of the Z-shaped adjusting assembly close to the semicircular pushing die 31, the follower locking assembly 5 is plugged into the semicircular pushing die 31 to lock the semicircular pushing die 31. Before the pushing assembly starts to contact the turning part of the Z-shaped adjusting assembly, the follower locking assembly 5 is separated from the semicircular pushing die 31.

[0046] The clamping structure of the multi-station cold heading machine moves to the outside of the semicircular die sleeve 2, and the driving structure drives the push rod 41 of the push assembly 4 to move toward the semicircular push die 31. Before the pushing assembly contacts the turning part of the Z-shaped adjustment assembly, the semicircular push die 31 is in a closed state. When the pushing assembly begins to contact the turning part of the Z-shaped adjustment assembly, the Z-shaped adjustment assembly drives the semicircular push die 31 to move outward from the closed state and start to open. When the pushing assembly separates from the turning part of the Z-shaped adjustment assembly, the semicircular push die 31 opens to the maximum state, and the pushing assembly remains in the open state as it continues to move. After the clamping structure performs the material clamping shift, the movable die pushes the blank to move into the semicircular push die 31, and the blank pushes the push rod 41 in the direction of the semicircular push die 31 away from the semicircular push die 31, and the semicircular push die 31 returns from the open state to the closed state. The semicircular push die 31 is in a state, and the semicircular push die 31 clamps the blank to prevent the blank from hitting the semicircular push die 31 when it is slightly offset, which is beneficial to feeding and the blank entering the semicircular push die 31, which is beneficial to actual use; at the same time, before the semicircular push die 31 is opened, the push rod 41 drives the follow-up locking component 5 to separate from the semicircular push die 31, and after the semicircular push die 31 is merged, the follow-up locking component 5 is plugged into the semicircular push die 31, and the semicircular push die 31 is locked during cold heading, thereby ensuring the stability of the semicircular push die 31; in addition, the assembled die sleeve composed of the upper and lower groups of semicircular die sleeves 2 is beneficial to the installation of the semicircular push die 31 in the semicircular die sleeve 2, and the semicircular groove 32 and the cross bar 33 cooperate to guide the semicircular push die 31 horizontally, thereby preventing the semicircular push die 31 from rotating, which is beneficial to use.

[0047] The pushing assembly includes a first cross block 42 and a first bearing 43. The left and right side walls at the middle end of the push rod 41 are fixedly connected to the first cross block 42. The outer end of the first cross block 42 is rotatably connected to the first bearing 43. The first bearing 43 is movably connected to the Z-shaped adjustment assembly. The first cross block 42 is movably connected to the follower locking assembly 5.

[0048] The Z-shaped adjustment assembly includes a first transverse groove 44, a first inclined groove 45, a second transverse groove 46 and a first transverse plate 47. The first transverse plate 47 is fixedly mounted on the rear side wall of the semicircular ejector die 31. The first transverse plate 47 is provided with a second transverse groove 46, a first inclined groove 45 and a first transverse groove 44 from front to back. The second transverse groove 46 is closer to the push rod 41 than the first transverse groove 44.

[0049] The first inclined slot 45 is a bending portion of the Z-shaped adjustment assembly.

[0050] The clamping structure of the multi-station cold heading machine moves to the outside of the semicircular die sleeve 2, and the driving structure drives the push rod 41 of the push assembly 4 to move toward the semicircular push die 31, and the push rod 41 drives the first cross block 42 of the push assembly to move toward the movable die, and the first cross block 42 drives the first bearing 43 to move. When the first bearing 43 is in the first cross groove 44 of the Z-shaped adjusting component, since the second cross groove 46 is closer to the push rod 41 than the first cross groove 44, the first bearing 43 and the first cross groove 44 cooperate to drive the first cross plate 47 to move inward, and the first cross plate 47 drives the semicircular push die 31 to be in a closed state. When the first bearing 43 of the pushing component begins to contact with the first inclined groove 45 of the Z-shaped adjusting component, the first inclined groove 45 of the Z-shaped adjusting component drives the semicircular push die 31 to move inward, and the semicircular push die 31 moves outward from the closed state to start to open, and the first bearing 43 of the pushing component contacts with the Z-shaped adjusting component. When the first inclined groove 45 of the section assembly is separated, the semicircular pusher die 31 is opened to the maximum state, and the first bearing 43 of the pushing assembly continues to move in the second transverse groove 46. When the first bearing 43 moves in the second transverse groove 46, the semicircular pusher die 31 is always in the open state, pushing the blank to the outside of the semicircular pusher die 31, and then the clamping structure clamps the material and the movable die pushes the blank to move into the semicircular pusher die 31. The blank pushes the push rod 41 in the direction away from the semicircular pusher die 31, and the semicircular pusher die 31 recovers from the open state to the closed state. The semicircular pusher die 31 clamps the blank to prevent the blank from hitting the semicircular pusher die 31 when it is slightly offset, which is beneficial for the blank to enter the semicircular pusher die 31, facilitate feeding, and facilitate actual use. After closing, the two groups of semicircular pusher dies 31 fit closely with the blank, and the two groups of semicircular pusher dies 31 after closing are in the required state for cold heading.

[0051] The semicircular pusher die 31 of the pusher die 3 is placed into the semicircular die sleeve 2, the cross bar 33 and the semicircular groove 32 are in contact with each other, and then the two groups of semicircular die sleeves 2 are combined, and the assembled die sleeve after the two groups of semicircular die sleeves 2 are combined is installed and fixed in the chassis 1, so that the pusher die 3 is conveniently installed in the assembled die sleeve, and the semicircular groove 32 and the cross bar 33 cooperate to guide the semicircular pusher die 31 to be opened or closed, so as to prevent the semicircular pusher die 31 from rotating when opening or closing.

[0052] The follower locking assembly 5 includes a locking assembly, an unlocking follower assembly and a locking follower assembly. The unlocking follower assembly is connected to the chassis 1, the locking follower assembly is connected to the push rod 41, the locking follower assembly is connected to the unlocking follower assembly, the unlocking follower assembly is connected to the locking assembly, and the locking assembly is connected to the semicircular pushing die 31.

[0053] The locking assembly includes a positioning rod 59, a U-shaped plate 510, a fixing rod 515 and a positioning hole 518. The chassis 1 is fixedly connected with the fixing rods 515 at equal intervals near the inner wall of the semicircular ejection die 31. The U-shaped plate 510 is slidably connected to the fixing rods 515 through a sliding hole. The U-shaped plate 510 is fixedly connected with the positioning rod 59 near the side wall of the semicircular ejection die 31. The side wall of the semicircular ejection die 31 near the U-shaped plate 510 is provided with a positioning hole 518 which is plugged into the positioning rod 59. The U-shaped plate 510 is connected to the locking follower assembly.

[0054] The locking follower assembly includes a transverse shaft 512, a first rack 513, a third transverse block 514, a second rack 516 and a gear 519. The inner wall of the chassis 1 rotates with the transverse shaft 512 through a bearing. The transverse shaft 512 is fixedly connected with a gear 519. The upper end of the gear 519 is meshed with the first rack 513, and the lower end of the gear 519 is meshed with the second rack 516. The second rack 516 is fixedly connected to the U-shaped plate 510. The end of the first rack 513 away from the semicircular push die 31 is fixedly connected with the third transverse block 514. The first rack 513 is fixedly connected to the unlocking follower assembly, and the third transverse block 514 is movably connected to a group of pushing assemblies.

[0055] The third cross block 514 is located in close contact with the end of the first cross block 42 of the pushing assembly of the group away from the semicircular pushing die 31 .

[0056] A second sliding groove 517 is formed at the upright portion of the U-shaped plate 510 , and a guide rod 511 is slidably connected in the second sliding groove 517 . The U-shaped plate 510 is fixedly connected to the end of the first rack 513 close to the semicircular ejector die 31 .

[0057] The unlocking follower assembly includes a movable rod 51, a third transverse groove 52, a second inclined groove 53, a second transverse plate 54, a slide plate 55, a first sliding groove 56, a second transverse block 57 and a second bearing 58. The second transverse plate 54 is fixedly installed at the end of the chassis 1 away from the movable mold. The third transverse groove 52 and the second inclined groove 53 are sequentially opened from back to front on the second inclined groove 53. The distance from the front end of the second inclined groove 53 to the movable rod 51 is greater than the distance from the rear end of the second inclined groove 53 to the movable rod 51. The third transverse groove 52 or the second inclined groove 53 is movably connected with the second bearing 58. When the second bearing 58 contacts the front end of the second inclined groove 53, the second transverse block 57 is separated from the slide plate 55, and the positioning rod 59 and the positioning hole 518 are separated. The second bearing 58 is 8 is fixedly connected to the slide plate 55, the movable rod 51 is slidably connected to the slide plate 55 through the movable groove, the chassis 1 is slidably connected to the movable rod 51 through the sliding hole, the end of the movable rod 51 located in the chassis 1 is fixedly connected to the first rack 513, the side wall of the push rod 41 close to the movable rod 51 is fixedly connected with the second cross block 57, the front side wall of the second cross block 57 is slidably connected to the slide plate 55, and the second bearing 58 moves to the front end of the second oblique groove 53 before the first bearing 43 contacts the first inclined groove 45 during the movement of the push rod 41 toward the movable mold, and the third cross block 514 contacts the first cross block 42 after the second cross block 57 passes the rear side of the slide plate 55 when the push rod 41 moves away from the movable mold.

[0058] The push rod 41 moves toward the movable mold until the second bearing 58 of the unlocking follower assembly is located at the rear end of the third transverse groove 52, the slide plate 55 is close to the end of the second transverse block 57 and is in close contact with the second transverse block 57, the push rod 41 moves to the left to push the second transverse block 57 to move, the second transverse block 57 pushes the slide plate 55 to move, the slide plate 55 pushes the movable rod 51 to move, the movable rod 51 moves toward the movable mold, the movable rod 51 drives the first rack 513 to move toward the movable mold, the first rack 513 drives the gear 519 to rotate, the gear 519 drives the second rack 516 to move in the direction away from the semicircular pusher mold 31, and the second The rack 516 drives the U-shaped plate 510 to move away from the semicircular push die 31, the U-shaped plate 510 drives the positioning rod 59 to move away from the semicircular push die 31, the slide plate 55 drives the second bearing 58 to move along the third transverse groove 52 toward the second inclined groove 53, and when the second bearing 58 contacts the front end of the second inclined groove 53, the second transverse block 57 separates from the slide plate 55, and at the same time, the positioning rod 59 and the positioning hole 518 separate, the separation of the second transverse block 57 and the slide plate 55 does not affect the continued movement of the push rod 41, and the separation of the positioning rod 59 and the positioning hole 518 does not affect the opening of the semicircular push die 31.

[0059] When the push rod 41 moves away from the movable mold and the first bearing 43 is separated from the first inclined groove 45, the semicircular push mold 31 is in a closed state, the push rod 41 drives the second cross block 57 to pass the slide plate 55, the first cross block 42 continues to move until it contacts the third cross block 514, the first cross block 42 pushes the third cross block 514 to move away from the movable mold, the third cross block 514 drives the first rack 513 to move away from the movable mold, the first rack 513 drives the gear 519 to rotate and the movable rod 51 to move, the gear 519 drives the second rack 516 to move toward the movable mold, and the second rack 516 drives the gear 519 to rotate and the movable rod 51 to move. The movable U-shaped plate 510 moves toward the movable mold, and the U-shaped plate 510 drives the positioning rod 59 along the fixed rod 515 to be inserted into the positioning hole 518. The positioning rod 59 and the positioning hole 518 lock the semicircular push mold 31, thereby ensuring the stability of the closed state of the semicircular push mold 31. At the same time, the movable rod 51 drives the slide plate 55 to move away from the movable mold, and the slide plate 55 drives the second bearing 58 to move from the second inclined groove 53 to the third transverse groove 52. The second bearing 58 and the second inclined groove 53 cooperate to push the rear side of the slide plate 55 to move to the front side of the second transverse block 57, so as to facilitate the slide plate 55 to adjust the set state.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A blank ejection mechanism for a multi-station cold heading machine, comprising a chassis (1), characterized in that: An assembled mold sleeve is fixedly installed at an equal interval on the end of the chassis (1) close to the movable mold; The assembled mold sleeve comprises two groups of semicircular mold sleeves (2), and the two groups of semicircular mold sleeves (2) are arranged opposite to each other up and down, and the semicircular mold sleeves (2) are fixedly connected to the chassis (1); A pusher die (3) which can be opened horizontally is movably connected in the assembled die sleeve; The push die (3) comprises a semicircular push die (31), a semicircular groove (32) and a cross bar (33). The cross bar (33) is provided on the front and rear end surfaces of the inner end of the semicircular die sleeve (2). The semicircular groove (32) is fixedly connected to the middle end of the outer end of the semicircular push die (31). The outer wall of the semicircular groove (32) is slidably connected to the inner wall of the cross bar (33). The pusher die (3) is connected to a pusher assembly (4) for pushing out the blank in the semicircular pusher die (31) and for opening and closing the semicircular pusher die (31) outwards; The push rod (41) comprises a push rod (41), a pushing assembly and a Z-shaped adjusting assembly. The push rod (41) is slidably connected to the chassis (1). The push rod (41) moves in the semicircular push die (31). The push rod (41) is fixedly connected to the push assembly symmetrically in front and back at a position in the chassis (1). The push assembly is movably connected to the Z-shaped adjusting assembly. The Z-shaped adjusting assembly is fixedly connected to the semicircular push die (31). When the push rod (41) moves toward the semicircular push die (31), the turning of the push assembly and the Z-shaped adjusting assembly is Before the bent portion contacts, the semicircular push die (31) is in a closed state. When the pushing component starts to contact the bent portion of the Z-shaped adjustment component, the Z-shaped adjustment component drives the semicircular push die (31) to move outward from the closed state and start to open. When the pushing component separates from the bent portion of the Z-shaped adjustment component, the semicircular push die (31) opens to the maximum state, and remains in the open state as the pushing component continues to move. During the movement of the push rod (41) in a direction away from the semicircular push die (31), the semicircular push die (31) returns from the open state to the closed state.

2. The blank ejection mechanism of the multi-station cold heading machine according to claim 1 is characterized in that: The pushing assembly comprises a first transverse block (42) and a first bearing (43); the left and right side walls at the middle end of the push rod (41) are fixedly connected to the first transverse block (42); the outer end of the first transverse block (42) is rotatably connected to the first bearing (43); the first bearing (43) is movably connected to the Z-shaped adjustment assembly; and the first transverse block (42) is movably connected to the follower locking assembly (5).

3. The blank ejection mechanism of the multi-station cold heading machine according to claim 2, characterized in that: The Z-shaped adjustment assembly comprises a first transverse groove (44), a first inclined groove (45), a second transverse groove (46) and a first transverse plate (47); the first transverse plate (47) is fixedly mounted on the rear side wall of the semicircular push die (31); the first transverse plate (47) is provided with a second transverse groove (46), a first inclined groove (45) and a first transverse groove (44) from front to back; the second transverse groove (46) is closer to the push rod (41) than the first transverse groove (44).

4. The blank ejection mechanism of the multi-station cold heading machine according to claim 3 is characterized in that: The first inclined groove (45) is a bending portion of the Z-shaped adjustment component.

5. The blank ejection mechanism of the multi-station cold heading machine according to claim 4, characterized in that: The follower locking assembly (5) comprises a locking assembly, an unlocking follower assembly and a locking follower assembly, wherein the unlocking follower assembly is connected to the chassis (1), the locking follower assembly is connected to the push rod (41), the locking follower assembly is connected to the unlocking follower assembly, the unlocking follower assembly is connected to the locking assembly, and the locking assembly is connected to the semicircular pushing die (31).

6. The blank ejection mechanism of the multi-station cold heading machine according to claim 5, characterized in that: The locking assembly comprises a positioning rod (59), a U-shaped plate (510), a fixing rod (515) and a positioning hole (518); the fixing rods (515) are fixedly connected to the inner wall of the semicircular push die (31) at equal intervals on the chassis (1); the U-shaped plate (510) is slidably connected to the fixing rods (515) through a sliding hole; the side wall of the U-shaped plate (510) close to the semicircular push die (31) is fixedly connected to the positioning rod (59); the side wall of the semicircular push die (31) close to the U-shaped plate (510) is provided with a positioning hole (518) plugged with the positioning rod (59); and the U-shaped plate (510) is connected to the locking follower assembly.

7. The blank ejection mechanism of the multi-station cold heading machine according to claim 6, characterized in that: The locking follower assembly comprises a transverse shaft (512), a first rack (513), a third transverse block (514), a second rack (516) and a gear (519); the inner wall of the chassis (1) rotates with the transverse shaft (512) through a bearing; the transverse shaft (512) is fixedly connected with a gear (519); the upper end of the gear (519) is meshedly connected with the first rack (513); the lower end of the gear (519) is meshedly connected with the second rack (516); the second rack (516) is fixedly connected with the U-shaped plate (510); the end of the first rack (513) away from the semicircular push die (31) is fixedly connected with the third transverse block (514); the first rack (513) is fixedly connected with the unlocking follower assembly; and the third transverse block (514) is movably connected with a group of pushing assemblies.

8. The blank ejection mechanism of the multi-station cold heading machine according to claim 7, characterized in that: A second sliding groove (517) is provided at the upright part of the U-shaped plate (510), a guide rod (511) is slidably connected in the second sliding groove (517), and the U-shaped plate (510) is fixedly connected to the end of the first rack (513) close to the semicircular push die (31).

9. The blank ejection mechanism of the multi-station cold heading machine according to claim 8, characterized in that: The unlocking follower assembly comprises a movable rod (51), a third transverse groove (52), a second inclined groove (53), a second transverse plate (54), a slide plate (55), a first sliding groove (56), a second transverse block (57) and a second bearing (58). The second transverse plate (54) is fixedly mounted on the end of the chassis (1) away from the movable mold. The second inclined groove (53) is provided with a third transverse groove (52) and a second inclined groove (53) in sequence from back to front. The distance from the front end of the second inclined groove (53) to the movable rod (51) is greater than the distance from the rear end of the second inclined groove (53) to the movable rod (51). The third transverse groove (52) or the second inclined groove (53) is movably connected to the second bearing (58). When the second bearing (58) contacts the front end of the second inclined groove (53), the second transverse block (57) is separated from the slide plate (55), and the positioning rod (59) and the positioning hole (518) are separated. The movable rod (51) is fixedly connected to the slide plate (55), the movable rod (51) is slidably connected to the slide plate (55) through the movable groove, the chassis (1) is slidably connected to the movable rod (51) through the sliding hole, the end of the movable rod (51) located in the chassis (1) is fixedly connected to the first rack (513), the side wall of the push rod (41) close to the movable rod (51) is fixedly connected to the second cross block (57), the front side wall of the second cross block (57) is slidably connected to the slide plate (55), the second bearing (58) moves to the front end of the second inclined groove (53) before the first bearing (43) contacts the first inclined groove (45) during the movement of the push rod (41) toward the movable mold, and the third cross block (514) contacts the first cross block (42) after the second cross block (57) passes the rear side of the slide plate (55) when the push rod (41) moves away from the movable mold.

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