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CN-224225383-U - Large rocker arm improved structure, overload protection device and packaging machine lifter

CN224225383UCN 224225383 UCN224225383 UCN 224225383UCN-224225383-U

Abstract

The utility model relates to the technical field of cigarette manufacturing, and discloses a large rocker arm improved structure, an overload protection device and a packaging machine lifter, wherein an overload sliding bead channel is formed in one side wall of a small rocker arm placing groove of a large rocker arm, and a protruding part is integrally arranged at the bottom of the small rocker arm placing groove; the protruding part is provided with a mounting threaded hole, the length of the protruding part is larger than the thickness of the side wall of the small rocker arm placing groove, the length of the connecting and matching structure is increased, so that the connecting and matching structure is prevented from being easily damaged by pulling; the connecting structure is designed at the thin wall position of the large rocker arm, the problem that deformation is caused at the thin wall position of the large rocker arm is avoided, the strength of the large rocker arm is improved, the fastening screw member penetrates through the overload elastic sheet and is connected with the mounting threaded hole in a screwed mode, the position of the connecting structure is wider, the large rocker arm is convenient to assemble, disassemble and overhaul, the frequency and the maintenance cost of replacement of the large rocker arm are reduced, the labor intensity of workers is reduced, the working efficiency is guaranteed, and the working quality is effectively improved.

Inventors

  • WU GUORUI
  • LV HONGZHEN
  • ZHU PEIGEN
  • WANG CHENG
  • LI YONGSHENG

Assignees

  • 红云红河烟草(集团)有限责任公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (10)

  1. 1. The large rocker arm improved structure is used for improving strength of a large rocker arm (100), the large rocker arm (100) is provided with a small rocker arm placing groove (101), an overload sliding bead channel (102) is formed in one side wall of the small rocker arm placing groove (101), and the large rocker arm improved structure is characterized in that a protruding portion (110) is arranged on the large rocker arm (100), the protruding portion (110) is integrally arranged on one side of the groove bottom of the small rocker arm placing groove (101), a mounting threaded hole (111) is formed in the protruding portion (110), the extending direction of the mounting threaded hole (111) is parallel to the extending direction of the overload sliding bead channel (102), the extending direction of the mounting threaded hole (111) is the thickness direction of the protruding portion (110), and the length of the mounting threaded hole (111) is larger than the thickness of one side wall of the small rocker arm placing groove (101).
  2. 2. The large rocker arm improvement according to claim 1, characterized in that the thickness of the projection (110) is equal to the thickness of the large rocker arm (100).
  3. 3. The large rocker arm improvement as claimed in claim 1, wherein said mounting threaded bore (111) is provided with one or more.
  4. 4. A large rocker arm improvement according to claim 3, wherein two of said mounting screw holes (111) are provided, and two of said mounting screw holes (111) are disposed in a left-right or up-down arrangement.
  5. 5. Overload protection device, characterized in that the overload protection device is fixed on the large rocker arm improved structure according to any one of claims 1-4, and comprises an overload sliding bead (310), an overload elastic sheet (320) and a fastening screw (330), wherein the fastening screw (330) can penetrate through the overload elastic sheet (320) and is screwed on the mounting threaded hole (111), the fastening screw (330) is arranged in one-to-one correspondence with the mounting threaded hole (111), and the overload elastic sheet (320) is fixedly covered on the outer side of the overload sliding bead channel (102) so as to selectively prevent the overload sliding bead (310) from sliding out of the overload sliding bead channel (102).
  6. 6. The overload protection apparatus of claim 5, further comprising a pressing block (340), wherein the fastening screw (330) sequentially passes through the pressing block (340), the overload elastic piece (320) and the protrusion (110), the pressing block (340) covers a side of the overload elastic piece (320) away from the overload sliding bead channel (102), and a projection of the overload sliding bead (310) on the overload elastic piece (320) is located at a portion of the overload elastic piece (320) exposed out of the pressing block (340).
  7. 7. The overload protection device according to claim 6, wherein a rubber pad is sandwiched between the pressing block (340) and the overload elastic sheet (320) and/or between the overload elastic sheet (320) and the protruding portion (110), and the overload elastic sheet (320) is in interference fit with the rubber pad.
  8. 8. Overload protection device according to any one of claims 5-7, characterised in that the fastening screw (330) is provided as a bolt, the tail of which is provided with a hexagonal recess (331).
  9. 9. Packaging machine lifter, characterized in that it comprises an overload protection device according to any of claims 5-8, said packaging machine lifter further comprising a large rocker arm (100) and a small rocker arm (200), said small rocker arm (200) being hinged to said large rocker arm (100) so that said small rocker arm (200) is selectively placed in a small rocker arm placement groove (101), said small rocker arm (200) being provided with an overload slide bead placement position (201), said overload slide bead placement position (201) being coaxially arranged with said overload slide bead channel (102) when said small rocker arm (200) is placed in said small rocker arm placement groove (101).
  10. 10. The packaging machine lifter according to claim 9, characterized in that two opposite protection grooves (103) are correspondingly dug on two side walls of the small rocker arm placing groove (101), the overload sliding bead channel (102) is provided with a groove bottom positioned in the protection groove (103), so that the overload sliding bead placing position (201) and the overload sliding bead channel (102) are arranged at intervals, and the groove bottom interval of the two protection grooves (103) is larger than the diameter of the overload sliding bead (310).

Description

Large rocker arm improved structure, overload protection device and packaging machine lifter Technical Field The utility model relates to the technical field of cigarette manufacturing, in particular to a large rocker arm improved structure, an overload protection device and a packaging machine lifter. Background Cigarette pack packaging is an important process in the production of cigarettes, which needs to be applied to a packing machine. The lifter of the packing machine generally lifts the packed tobacco rods or tobacco packages together with Shan Zhangdai pulled transparent paper, so that the single transparent paper wraps the surface of the cigarette case in an inverted U shape in the lifting process, lifts the single transparent paper to be flush with the next packing channel, and then pushes the tobacco rods or tobacco packages with the transparent paper to the right by the transparent paper folding plate and the tobacco pushing plate. In the production process of the packaging machine, cigarette bars or cigarette packets which are not wrapped in place by the business label paper outside the cigarette bars are often generated due to unexpected factors, and then the cigarette bars or the cigarette packets are pushed to the position of the lifter and can be blocked when the lifter is lifted during working. As shown in fig. 1 and 2, in order to avoid the situation that the lifter cannot work normally after being blocked and possibly causes damage to a machine, an overload protection device 300 is additionally arranged on the lifter, the overload protection device 300 on the existing equipment is in a structure that an overload elastic piece 320 is additionally provided with an overload sliding bead 310, the overload elastic piece 320 presses the overload sliding bead 310 into a placement hole of a small rocker arm 200 mainly for effectively acting after passing through a large rocker arm 100 through a connecting piece, when the lifter is blocked, and the machine is overloaded, the overload sliding bead 310 can be separated from the placement hole of the small rocker arm 200, and overcomes the pressure of the overload elastic piece 320 to move outwards, at the moment, the assembly of the small rocker arm 200 and the large rocker arm 100 can be separated, the lifter can continue to reciprocate mechanical action, the large rocker arm 100 can continue to swing along with the large rocker arm 100, the lifter can not continue to effectively act, and the blocked position can not perform lifting action any more, so that the overload protection of the machine can be achieved. In the prior art, since the force of the overload resilient 320 during the outward deformation acts on the connecting piece and the thin wall on one side of the large rocker arm 100 where the connecting piece is located, when overload is frequent, the thin wall is pulled to deform or the matching structure of the connecting piece is pulled to be broken, and at this time, the overload protection device 300 fails, and the large rocker arm 100 needs to be replaced. The large rocker arm 100 is very heavy to replace, and normally requires on-duty workers to maintain for 6-8 hours, so that the effective operation rate of the equipment is seriously affected, and the labor intensity of the workers is increased. Disclosure of utility model The utility model aims to provide a large rocker arm improved structure, an overload protection device and a packaging machine lifter, which can improve the strength of the large rocker arm, stabilize the assembly structure and the overload protection effect, reduce the cost of maintenance manpower and material resources, ensure the operation efficiency and effectively improve the operation quality. To achieve the purpose, the utility model adopts the following technical scheme: The improved structure of the large rocker arm is used for improving the strength of the large rocker arm, the large rocker arm is provided with a small rocker arm placing groove, an overload sliding bead channel is formed in one side wall of the small rocker arm placing groove, the large rocker arm is provided with a protruding portion, the protruding portion is integrally arranged on one side of the groove bottom of the small rocker arm placing groove, the protruding portion is provided with a mounting threaded hole, the extending direction of the mounting threaded hole is parallel to the extending direction of the overload sliding bead channel, the extending direction of the mounting threaded hole is the thickness direction of the protruding portion, and the length of the mounting threaded hole is larger than the thickness of one side wall of the small rocker arm placing groove. As an alternative to the improved structure of the large rocker arm, the thickness of the protruding portion is equal to the thickness of the large rocker arm. As an alternative to the large rocker arm improved structure, the mounting threaded hole is provided