CN200948608Y

CN200948608Y - Planet cutting mechanism for three-faced book trimming machine

Info

Publication number: CN200948608Y
Application number: CN 200620107231
Authority: CN
Inventors: ***
Original assignee: NINGBO LIANCHUANG PRINTING MACHINERY CO Ltd
Current assignee: NINGBO LIANCHUANG PRINTING MACHINERY CO Ltd
Priority date: 2006-08-30
Filing date: 2006-08-30
Publication date: 2007-09-19
Anticipated expiration: 2016-08-30

Abstract

The utility model relates to a planetary cutting member in trilateral book trimmer used for driving the cutter to realize a trilateral trimming to the non-binding side of the book block. The utility model comprises an internal gear, a planetary gear engaged to the internal gear, and a concentric rotary plate with the internal gear; wherein the shaft of the planetary gear is positioned on the rotary plate, and the shaft of the rotary plate is just the output shaft of the electric motor through a retarding member; a pin is positioned away from the shaft on the planetary gear, and is connected with a connecting rod, the other end of which is connected with a slider of the cutter and the slider is positioned in a sliding chute of the framework. The utility model has the advantages of concise structure, light elements, low cost as well as good action consistency and capability of high speed operation.

Description

Planet cutting mechanism of three-knife trimming machine

Technical field

The utility model relates to the cutting technique field, especially relates to the cutting knife driving mechanism of three-knife trimming.

Background technology

The cutting knife motion of three-knife trimming is by promoting, pause, cutting, and such one group of do action is formed; A kind of cutting knife driving mechanism of using morely at present is a kind of intermittent motion mechanism; Drive a non-complete gear wheel by gear wheel, the bearing pin of the biasing on the non-complete gear wheel connects a connecting rod, and the other end of connecting rod connects the slide block of cutting knife, thereby makes cutting knife realize the action that promotes, pauses, cuts; When non-complete gear wheel the engagement of toothed portion and gear wheel is arranged the time, non-complete gear wheel is rotated, the drivening rod motion, cutting knife promotes or downcuts; During the relative gear wheel of the no toothed portion of non-complete gear wheel, non-complete gear wheel, connecting rod and cutting knife stop motion; On non-complete gear wheel, be fixed with dial, the roller that it is fixed on the gear wheel is stirred, the effect of roller-dial mechanism is to make non-complete gear wheel quicken gradually to reach from the state with the gear wheel engagement and be decelerated to pause gradually up to meshing with gear wheel from the state that pauses; Be parked on definite position in order to make that non-complete gear wheel is stable, also be provided with a cover brake lining-lock loop mechanism, the brake lining that is provided with on the non-complete gear wheel, when non-complete gear wheel was paused, it was limited and can not rotate by the lock circle on the gear wheel; As seen, in fact this mechanism is made up of non-complete gear wheel mechanism, roller-dial mechanism and brake lining-three kinds of mechanisms of lock loop mechanism; This mechanism can finish the cutting knife action request of three-knife trimming, but mechanism's complexity, number of spare parts is many, assembling, adjusting difficulty, cost height; And, because therefore three kinds of necessary alternations of mechanism easily produce noise and impact, be not suitable for running up.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiency of above-mentioned background technology, a kind of planet cutting mechanism of three-knife trimming to be provided, make mechanism succinct, and member is light and handy, reduces cost, and it is good to have a continuity of movement, and it is special to be fit to high speed operation etc.

For achieving the above object, the technical solution adopted in the utility model is such: a kind of planet cutting mechanism of three-knife trimming machine, comprise an internal gear that is fixed on the support, a planetary gear that is meshed with it, a rotating disk concentric with internal gear, planetary rotating shaft is located on the rotating disk, and the rotating shaft of this rotating disk promptly is the output shaft of motor through reducing gear; The position of departing from its rotating shaft on planetary gear is provided with a bearing pin, this bearing pin coupler link, and the other end of connecting rod and the slide block of cutting knife link, and this slide block is located in the chute of frame.

When starting motor, through reducing gear, output shaft drives dial rotation.The planetary gear that is connected on the rotating disk rolls in internal gear, has not only revolved round the sun but also rotation the bearing pin drivening rod on it, thereby the slide block of the drivening rod other end and cutting knife motion; The movement locus of the bearing pin on the planetary gear is three hypocycloids, and the sealing triangular trajectory that similar spill camber line is formed is finished the needed lifting of three-knife trimming respectively, pauses and cut three actions.

Owing to adopted technique scheme, the planet cutting mechanism of a kind of three-knife trimming of the present utility model, its mechanism is succinct, and member is light and handy, and cost is low, and it is good to have a continuity of movement, is fit to characteristics such as high speed operation.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the cutaway view Amplified image of the planetary gear set part of Fig. 1

Among the figure: 1, internal gear, 2, rotating disk, 3, rotating shaft, 4, planetary gear, 5, rotating shaft, 6, bearing pin, 7, connecting rod, 8, cutting knife.

The specific embodiment

Shown in accompanying drawing 1-2, a kind of planet cutting mechanism of three-knife trimming machine of the present utility model, comprise planetary gear set and cutting knife 8, said planetary gear set, 4, one rotating disks 2 concentric with internal gear of 1, one planetary gear that is meshed with it of internal gear that are fixed on the support are arranged, planetary rotating shaft 5 is located on the rotating disk, and the rotating shaft 3 of this rotating disk promptly is the output shaft of motor through reducing gear; The position of departing from its rotating shaft 5 on planetary gear is provided with a bearing pin 6, this bearing pin coupler link 7; Said cutting knife 8 links by the other end of slide block and connecting rod, and this slide block is located in the chute of frame.

Claims

1, a kind of planet cutting mechanism of three-knife trimming machine, it is characterized in that: comprise planetary gear set and cutting knife (8), said planetary gear set, an internal gear (1) that is fixed on the support is arranged, a planetary gear that is meshed with it (4), a rotating disk concentric (2) with internal gear, planetary rotating shaft (5) is located on the rotating disk, and the rotating shaft of this rotating disk (3) promptly is the output shaft of motor through reducing gear; The position of departing from its rotating shaft (5) on planetary gear is provided with a bearing pin (6), this bearing pin coupler link (7); Said cutting knife (8) links by the other end of slide block and connecting rod, and this slide block is located in the chute of frame.