CN201338884Y

CN201338884Y - Expansion type base paper gripping head

Info

Publication number: CN201338884Y
Application number: CNU2008202376796U
Authority: CN
Inventors: 戴永斌
Original assignee: Wuxi Aike Sealing Technology Co Ltd
Current assignee: Wuxi Aike Sealing Technology Co Ltd
Priority date: 2008-12-30
Filing date: 2008-12-30
Publication date: 2009-11-04
Anticipated expiration: 2018-12-30

Abstract

The utility model relates to an expansion type base paper gripping head, which comprises a core shaft, and is characterized in that a cam mechanism is arranged outside the core shaft. The cam mechanism has the structure that a cam is arranged on the external surface of the core shaft, a shell is covered on the periphery of the cam, the body of the shell is provided with a guide hole, a sliding plate is installed in the guide hole, and the external surface of the sliding plate is in a circular arc shape, and the internal surface thereof is in a cam shape, a straight pin is installed between the sliding plate and the core shaft, and positioning plates are installed on the two ends of the straight pin, an end cap is installed on one end face of the core shaft, and the other end face thereof is provided with a flange. The expansion type base paper gripping head has large contact face with a base paper core cylinder, and the base paper core cylinder can receive balance stress and have small pressure per unit, thereby avoiding expanding the core cylinder broken. The expansion type base paper gripping head has simpler operation, difficult damages and free maintenance.

Description

Expansion type body paper chuck

Technical field

The utility model relates to the body paper chuck, particularly automatic abdominal distension formula body paper chuck.

Background technology

In the prior art, expansion type body paper chuck comprises a mandrel, be with orienting sleeve on the mandrel movingly, axial retracing spring is housed between orienting sleeve inner chamber front end face and the mandrel, the orienting sleeve sidewall is provided with three radially-directed hole in a circumferential direction, be embedded with the key bar in the radially-directed hole movingly, key bar inner end surface is facing to the inclined-plane that turns forward that vertically is provided with on the mandrel sidewall, key bar diverse location on the paper web inner core when activity, as long as the paper arm is exerted pressure toward the centre again, draw key bar on the clamper main body just can eject, and pushes down the inwall of core tube, and body paper is fixed.But this automatic expansion type chuck can stay impression at core tube inwall because key bar and core tube inwall area of contact are few, and long-time the use can be bad with the support of core tube.

The utility model content

The utility model can stay impression at core tube inwall when pushing down core tube inwall at the expansion type body paper chuck of said structure, the long-time use can be with the bad problem of core tube support, carried out research and improved, a kind of former refill tube stressed evenly, not cracky and no service required automatic expansion body paper chuck of making is provided.

In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:

Expansion type body paper chuck, comprise mandrel, mandrel is outside equipped with cam mechanism, and described cam mechanism is constructed as follows: the outside face in axle has cam, and the periphery of cam is with housing, have pilot hole on the described housing housing, sliding panel is installed in the pilot hole, and the outside face of described sliding panel is a circular arc, and inside face is a cam face, between sliding panel and mandrel straight pin is installed, straight pin two ends installing and locating plate; On the mandrel one end end face end cap is installed, the other end is installed on the flange.

Two straight pins are installed between described sliding panel and mandrel.The periphery of described mandrel is equipped with three groups of described cam mechanisms.Described end cap has tapering.Between described flange and housing packing ring is installed.

Technique effect of the present utility model is: after the utility model is used to push down former refill tube inwall, the mandrel outer round surface has 6 groups of identical cams, be with housing on the mandrel, housing has pilot hole, sliding panel is installed in the pilot hole, between sliding panel and mandrel straight pin is installed, straight pin two ends installing and locating plate, by the fine rotation of housing, drive straight pin and on the mandrel cam face, roll, in pilot hole, eject with the rising of mandrel cam face thereby drive sliding panel, outside from the lining, push down former refill tube inwall, body paper is fixed, because the sliding panel area is big, when clamping former refill tube inwall, core tube inwall and sliding panel contact surface place pressure are big and well-balanced, the stretching inwall, and the pressure that is subjected in the core tube inwall unit area can not press from both sides bad core tube, rotate round about, sliding panel shrinks with the decline of mandrel cam face, and expansion pipe is unclamped, and is easy to operate.

Description of drawings

Fig. 1 dissects the main scheme drawing of looking for the utility model structure;

The A-A cross sectional drawing that Fig. 2 is totally released for the utility model structure;

The A-A cross sectional drawing that Fig. 3 clamps fully for the utility model structure;

The schematic perspective view of Fig. 4 utility model;

Fig. 5 two kinds of size combinations schematic perspective views of the present utility model;

Fig. 6 the utility model application state scheme drawing.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described.

See Fig. 1, Fig. 2, the utility model comprises mandrel 7, the outer periphery of mandrel 7 is equipped with three groups of cam mechanisms, described cam mechanism is constructed as follows: the outside face in axle 7 has cam 10, the periphery of cam 10 is with housing 4, see Fig. 2, Fig. 4, have pilot hole 12 on the described housing 4, sliding panel 6 is installed in the pilot hole 12, the outside face of described sliding panel 6 is a circular arc, and inside face 11 is a cam face, sees Fig. 1, two straight pins 5 are installed between each sliding panel 6 and the mandrel 7, and the two ends of straight pin 5 are equipped with locating plate 2; End cap 1 is connected by the end face of screw 3 with mandrel 7 one ends, end cap 1 has tapering, the cone of end cap 1 front end is advanced former refill jacket casing on the utility model very easily, the other end of mandrel 7 and flange 9 interference fit are installed together, packing ring 8 is installed between flange 9 and the housing 4, packing ring 8 is an anti-abrasive material, prevents the metallic material interlock, reduces friction coefficient.As Fig. 5, expansion type chuck mandrel 7 can be arranged to two annular table terraces being formed by different-diameter, and housing 4 also is arranged to the former refill tube of corresponding two ring-shaped steps, and the step of selecting diameter to be fit to according to the size of former refill tube diameter uses like this.

See Fig. 2, Fig. 3, Fig. 4, Fig. 6, during the certain angle of housing 4 fine rotation, straight pin 5 scrolls up in the cam face extreme lower position 14 of mandrel 7, straight pin 5 promotes sliding panel 6 and ejects from pilot hole 12 interior risings, push down former refill tube inwall 13, sliding panel 6 outer surface diameter that strut are a bit larger tham former refill tube diameter of bore through calculating, sliding panel 6 is fitted in the former refill tube fully, clamp former refill tube, body paper on the former refill tube is fixed, core tube inwall 13 is big and well-balanced with sliding panel 6 contact surface place pressure, and the pressure that is subjected in the core tube inwall unit area can not press from both sides bad core tube.See Fig. 3, when straight pin 5 slides into the highest 15 places, surface of cam 10, sliding panel 6 is expanded to high limit position, and be complete clamped condition this moment.See Fig. 2, when straight pin 5 slided into 10 extreme lower positions 14 of mandrel 7 overhead cams, be complete relaxation state this moment.

The utility model utilizes sliding panel to contact with the large-area of former refill tube, and it is well-balanced and unit pressure is little to make that former refill socket joint touches pressure that face is subjected to, can not support bad core tube.The utility model is simple to operate, and cracky does not need to safeguard.

Claims

1. expansion type body paper chuck, comprise mandrel, it is characterized in that mandrel is outside equipped with cam mechanism, described cam mechanism is constructed as follows: the outside face in axle has cam, and the periphery of cam is with housing, have pilot hole on the described housing housing, sliding panel is installed in the pilot hole, and the outside face of described sliding panel is a circular arc, and inside face is a cam face, between sliding panel and mandrel straight pin is installed, straight pin two ends installing and locating plate; On the mandrel one end end face end cap is installed, the other end is installed on the flange.

2. according to the described expansion type body paper of claim 1 chuck, it is characterized in that being equipped with between described sliding panel and mandrel two straight pins.

3. according to the described expansion type body paper of claim 1 chuck, it is characterized in that the periphery of described mandrel is equipped with three groups of described cam mechanisms.

4. according to the described expansion type body paper of claim 1 chuck, it is characterized in that described end cap has tapering.

5. according to the described expansion type body paper of claim 1 chuck, it is characterized in that between described flange and housing packing ring being installed.