CN2731392Y

CN2731392Y - Cam swing gear for strap loom

Info

Publication number: CN2731392Y
Application number: CN 200420069017
Authority: CN
Inventors: 刘峰; 李惠民
Original assignee: HAITIAN MECHANOELECTRIC EQUIPMENT INST ZHUZHOU CITY
Current assignee: HAITIAN MECHANOELECTRIC EQUIPMENT INST ZHUZHOU CITY
Priority date: 2004-10-26
Filing date: 2004-10-26
Publication date: 2005-10-05
Anticipated expiration: 2014-10-26

Abstract

The utility model introduces a cam swinging gear for a strap loom, which is composed of cams, an upper swinging lever, a lower swinging lever, a main driving shaft and a swinging shaft. The utility model is characterized in that the cam arranged in a door-shaped space between the upper swinging lever and the lower swinging lever is a superposed combining wheel which is composed of a big cam and a small cam which have the same shaft center; the upper swinging lever and the lower swinging lever are composed of two levers which are positioned in the same vertical surface and are connected by the swinging shaft and an external connecting rod which are arranged at the same side. Owning to the double cam swinging mechanism, the strap loom has equilibrium when used, and meanwhile, the noise can be reduced.

Description

Strap loom cam swing mechanism

Technical field

The utility model relates to a kind of strap loom cam swing mechanism, belongs to cam swing mechanism class, is particularly useful for the firecrackers strap loom and uses.

Background technology

The cam swing mechanism is firecrackers production crucial functional entity in the strap loom, realizes swinging up and down in order to make the fork in the strap loom, and similar on the market at present machine all adopts a cam, is equipped with spring again and realizes.Because single cam can produce impulsive force with fork in rotation, cause the spring return speed that has some setbacks easily, make go up point and of fork can not get reliable assurance at following, and the noise of generation is excessive when causing complete machine to be worked.

The utility model content

The purpose of the present utility model: aim to provide a kind of even more ideal strap loom cam swing mechanism, wish that it overcomes not only that single cam in the complete machine work cooperates with spring and the impulsive force that produces, complete machine is in than the smooth working state, and can also effectively reduces noise improvement workman's production environment.

This strap loom cam swing mechanism, by cam, go up swing arm 4, lower swing bar 5, final drive shaft 1 and swinging axle 6 and form, it is characterized in that: be located at one that cam in 5 type spaces of swing arm 4 and lower swing bar is made up of big cam 3 of concentric and little cam 2 and repeatedly put the shape combination wheel.

Described upward swing arm 4, lower swing bar 5 are made up of two bars that are not in the same vertical plane, and are connected with an outside connecting rod by the swinging axle 6 on both the same sides.

This strap loom cam swing mechanism according to above technical scheme design, because the spring mechanism in the old-fashioned swing-bar mechanism of write off, make upper and lower swing arm realize swinging up and down by two concentric raised wheel mechanisms being located in the same rotating shaft, thereby make swing be able to the balance realization, but also therefore can reduce the machine works noise.

Description of drawings

Accompanying drawing 1 is the utility model overall structure schematic diagram;

Accompanying drawing 2 is the utility model vertical view;

Accompanying drawing 3 is that the AA of Fig. 1 is to cutaway view.

Among the figure: 1, final drive shaft, the little cam of 2-, 3-big cam, the last swing arm of 4-, 5-lower swing bar, 6-swinging axle.

The specific embodiment

This strap loom cam swing mechanism as shown in the figure, it is a kind of inventive improvements to the similar mechanism of present known strap loom, and this changing mainly is that double cam with the design of concentric substitutes the single cam in the former mechanism and the swing mechanism of spring composition.

The described double cam of this double cam swing mechanism is made up of little cam 2 and the big cam 3 be located on the same final drive shaft 1, and described fork is a door type framework that is coupling through a swinging axle 6 and outer link.Described door type framework by upper and lower not on the same vertical plane swing arm 4, lower swing bar 5 form, described double cam then touches with last swing arm 4, lower swing bar 5 respectively by the edge part of big cam 3 and little cam 2.Form thus make upper and lower swing arm intermittence and also be smooth transition ground realize with the contact of big cam 3, little cam 2 with separate, thereby cause the steady upper and lower swing of intermittence of upper and lower swing arm.

Claims

1, a kind of strap loom cam swing mechanism, by cam, go up swing arm (4), lower swing bar (5), final drive shaft (1) and swinging axle (6) and form, it is characterized in that: be located at one that cam in swing arm (4) and lower swing bar (5) the type space is made up of the big cam (3) of concentric and a little cam (2) and repeatedly put the shape combination wheel.

2, a kind of strap loom cam swing mechanism as claimed in claim 1, it is characterized in that: described upward swing arm (4), lower swing bar (5) are made up of two bars that are not in the same vertical plane, and are connected with an outer link by the swinging axle (6) on both the same sides.