CN219859920U

CN219859920U - Improved expansion shaft

Info

Publication number: CN219859920U
Application number: CN202320669978.1U
Authority: CN
Inventors: 刘松涛
Original assignee: Shanghai Yanjie Machinery & Electric Equipment Co ltd
Current assignee: Shanghai Yanjie Machinery & Electric Equipment Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-10-20
Anticipated expiration: 2033-03-30

Abstract

The utility model discloses an improved expansion shaft which comprises an expansion shaft, wherein three plates are arranged on the expansion shaft, and each plate is fixed on a corresponding key bar on the expansion shaft. The utility model can normally lock and unlock the used paper, film, color ribbon, cloth and other materials under the condition of no winding drum, and expands the application range.

Description

Improved expansion shaft

Technical Field

The present utility model relates to an improved expansion shaft for locking and releasing a spool.

Background

Whether the inflatable shaft or the manual inflatable shaft, the sheet type or the key bar type, the basic principle is that the batten or the key bar is inflated through manual rotation or an air nozzle, and the drum is inflated to complete the locking function after the internal diameter of the drum is reached. In the state of the expansion of the winding drum, the batten or the key strip is recovered by manual rotation or air nozzle deflation, and when the outer diameter of the expansion shaft is smaller than the inner diameter of the winding drum, the loosening effect of the winding drum is completed.

The existing expansion shaft is usually applied to locking and releasing a winding drum, and can not perform the locking and releasing functions under the condition of no winding drum, so that materials such as paper, film, color ribbon, cloth and the like can not be normally locked and released under the condition of no winding drum, and the application range is limited.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an improved expansion shaft aiming at the defects of the existing expansion shaft. On the basis of the principle that the original expansion shaft is loaded by the expansion shaft, the expansion shaft is transformed, so that materials such as paper, films, color bands and cloth which can be normally locked and loosened under the condition of no winding drum can be achieved, and the application range is expanded.

In order to achieve the above object, the utility model provides an improved expansion shaft, which comprises an expansion shaft, wherein three plates are arranged on the expansion shaft, each plate is fixed on a corresponding key bar on the expansion shaft, and the improved expansion shaft is characterized by further comprising a baffle plate, wherein the baffle plate is fixed on a body of the expansion shaft and covers one plate, and materials pass through between the baffle plate and the plate.

In a preferred embodiment of the utility model, the circumferential width of the flap is close to the circumferential width of the panel.

In a preferred embodiment of the present utility model, the circumferential width of the baffle and the circumferential width of the plate each correspond to a central angle of less than 120 °.

In a preferred embodiment of the utility model, the distance between the flap and the plate is adjusted by means of a spacer.

In a preferred embodiment of the utility model, the thickness of the shim = plate expansion height + material thickness-clamping gap of different materials.

By adopting the technical scheme, the utility model can normally lock and loosen the used paper, film, ribbon, cloth and other materials under the condition of no winding drum, thereby expanding the application range.

Drawings

FIG. 1 is an exploded view of the improved expansion shaft of the present utility model.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description.

Referring to fig. 1, the improved expansion shaft shown in the drawings comprises an expansion shaft 10, wherein three plates 30 are arranged on the expansion shaft 10, each plate 30 is fixed on a corresponding key bar 11 on the expansion shaft 10 through a fastener such as a screw, and further comprises a baffle 20, the baffle 20 is fixed on the body of the expansion shaft 10 through the fastener such as the screw and a gasket 40, and materials pass through between the baffle 20 and the plates 30. The circumferential width of the flap 20 approximates the circumferential width of the panel 30. And the central angles corresponding to the circumferential width of the baffle 20 and the circumferential width of the plate 30 are smaller than 120 degrees. The distance between the flap 20 and the expansion shaft 10 is adjusted by means of the spacer 40.

The utility model is based on the working principle of the expansion shaft 10, so as to achieve the functions of locking and conveniently loosening the material under the condition of no winding drum. Such applications are only available when the material is wound up and cannot be applied to the supply shaft.

By attaching a fixed flap 20 and plate 30 to the outside of the shaft 10, the flap 20 should be close to the plate 30 width and should be less than 120 ° circumferentially, facilitating removal of the rolled material after relaxation. The spacing between the baffle 20 and the plate 30 is determined according to the thickness of the material to be locked, and when the plate 30 reaches the maximum height, the spacing between the baffle 20 and the plate 30 is smaller than the thickness of the material, so that the material is clamped by the plate 30 and the baffle 20 after the plate 30 expands.

When the material is required to be locked on the expansion shaft 10, the key bar 11 on the expansion shaft 10 is firstly loosened to the lowest position, the initial part of the material is inserted into the gap between the plate 30 and the baffle 20, the plate 30 is manually rotated or inflated to expand the plate 30, after the plate 30 is expanded to a certain height, the plate 30 and the baffle 20 clamp the material, and then the recovery or pulling effect of the material is achieved through the rotation of the expansion shaft 10.

After the material is rolled up to a certain diameter, when the rolled material needs to be taken down, the rolled material can be easily taken down by manually rotating or deflating the air tap, so that the sheet 30 is recovered to the lowest position.

Claims

1. The utility model provides an improved generation inflation axle, includes the inflation axle, be provided with three slab on the inflation axle, every slab is fixed on the epaxial corresponding keybar of inflation, its characterized in that still includes a separation blade, the separation blade is fixed on the body of inflation axle and with cover on a slab, the material is followed pass between separation blade and the slab.

2. An improved expansion joint according to claim 1, wherein the circumferential width of said flap is approximately the circumferential width of said panel.

3. An improved expansion joint according to claim 2, wherein the circumferential width of the baffle and the circumferential width of the plate each have a central angle of less than 120 °.

4. An improved expansion joint according to claim 3, wherein the distance between said flap and said plate is adjusted by means of shims.

5. An improved expansion shaft according to claim 4, characterized in that the thickness of the shim = plate expansion height + material thickness-clamping gap of different materials.