CN210364740U

CN210364740U - Elastic limiting body for labeling machine

Info

Publication number: CN210364740U
Application number: CN201921390975.4U
Authority: CN
Inventors: 不公告发明人
Original assignee: China Tianjin Kailida Control Technology Development Co ltd
Current assignee: China Tianjin Kailida Control Technology Development Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-04-21
Anticipated expiration: 2029-08-26

Abstract

The utility model relates to an elasticity spacing body for labeller, elasticity spacing body presss from both sides tight suit at the shaft, the elasticity spacing body is confined loop configuration, there are two tangent points at least in the inner edge of the elasticity spacing body and the excircle of shaft. The circle formed by the tangent points is called an inscribed circle, when the elastic limiting body is not used, the diameter of the inscribed circle is called a minimum inscribed circle diameter, when the elastic limiting body is supported to be the maximum, the diameter of the inscribed circle is called a maximum inscribed circle diameter, and the diameter of the minimum inscribed circle is smaller than the diameter of the wheel shaft and smaller than the diameter of the maximum inscribed circle. The utility model has the advantages of simple structure and scientific and reasonable design, the design is ingenious, through the non-circular shape structural feature of elasticity spacing body inner edge, makes the elasticity spacing body all have certain power of hugging closely with the shaft, is convenient for adjust moreover, and the practicality is strong, has the value of extensive popularization and application.

Description

Elastic limiting body for labeling machine

Technical Field

The utility model belongs to the labeller field relates to an elasticity spacing body for labeller.

Background

The labeling machine is a device for sticking coiled self-adhesive paper labels (paper or metal foils) on PCBs, products or specified packages. Because the width of the label is different, a limiting ring is sleeved on the wheel shaft for limiting.

The paper tape spacing ring used on the labeling machine generally adopts two structures:

firstly, adopt radial jackscrew structure, as shown in fig. 1a, jackscrew 3 is installed to 2 diametral directions of spacing ring, through rotatory jackscrew top tight shaft 1 to make the spacing ring fix at the shaft epaxially, when the spacing ring 2 positions of needs adjustment, need loosen jackscrew 3 earlier, screw jackscrew 3 again after adjusting spacing ring position 2 positions, complex operation, and when the space had the limit, the jackscrew was screwed to the spanner was difficult to the operation.

The other is an open structure, as shown in fig. 1b, when the limit ring 2 is sleeved on the wheel shaft 1, the wheel shaft is tightly held by the elasticity of the deformation of the split ring. In this way, the retainer ring needs to have a certain wall thickness (the wall thickness is the difference between the outer radius and the inner radius of the ring) to ensure sufficient elasticity, and when the wall thickness is too thin, the retainer ring cannot hold the wheel axle tightly due to too small elasticity.

Therefore, a novel elastic limiting body with simple structure and convenient adjustment is urgently needed to be developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a simple structure, adjust convenient novel structure be used for the elasticity spacing body of labeller.

The scheme of the utility model is realized like this:

the elastic limiting body is in a closed annular structure, and at least two tangent points exist between the inner edge of the elastic limiting body and the excircle of the wheel shaft.

And the circle formed by the tangent points is called an inscribed circle, the diameter of the inscribed circle is called a minimum inscribed circle diameter when the elastic limiting body is not used, the diameter of the inscribed circle is called a maximum inscribed circle diameter when the elastic limiting body is supported to be maximum, and the minimum inscribed circle diameter is smaller than the diameter of the wheel axle and smaller than the maximum inscribed circle diameter.

Moreover, the inner edge of the elastic limiting body is of an elliptical structure.

Moreover, the outer ring of the elastic limiting body is of a circular or oval structure.

Moreover, the tangent surface of the inner edge of the elastic limiting body and the wheel axle is a plane.

Moreover, the planes are arranged at intervals.

Moreover, the surface of the inner edge of the elastic limiting body tangent to the wheel shaft is a curved surface.

Moreover, the curved surface is a plurality of and interval sets up.

Moreover, the outer ring of the elastic limiting body is of a circular structure.

Moreover, the elastic limiting body is made of polyethylene, polyformaldehyde, polytetrafluoroethylene or nylon.

The utility model has the advantages that:

1. the inner edge of the elastic limiting body is of an oval structure, two opposite tangent points are formed between the inner edge of the elastic limiting body and the wheel shaft, and the elastic limiting body is simple in structure and easy to adjust.

2. The inner edge of the elastic limiting body is provided with a plurality of planes or curved surfaces at intervals, the planes or curved surfaces are tangent with the outer circle of the wheel shaft to form a plurality of tangent points, and the structure is uniformly stressed and is easy to adjust.

3. The utility model has the advantages of simple structure and scientific and reasonable design, the design is ingenious, through the non-circular shape structural feature of elasticity spacing body inner edge, makes the elasticity spacing body all have certain power of hugging closely with the shaft, is convenient for adjust moreover, and the practicality is strong, has the value of extensive popularization and application.

Drawings

FIG. 1 is a schematic diagram of a stop collar of the prior art;

FIG. 2 is a cross-sectional view of the elastic spacing body of the present invention (the inner edge is an oval structure);

FIG. 3 is a cross-sectional view of the elastic spacing body of the present invention (the inner edge is a plurality of planes spaced uniformly);

FIG. 4 is a cross-sectional view of the elastic spacing body of the present invention (the inner edge is a plurality of curved surfaces spaced uniformly);

fig. 5 is a view showing the usage state of the present invention (the inner edge is an oval structure).

Reference numerals:

1-wheel axle, 2-limit ring, 3-jackscrew, 4-elastic limit body, 4A-outer ring, 4B-inner edge, 4C-plane, 4D-curved surface, F-tangent point, H1-long axis, H2-short axis, H3-inscribed circle diameter, H4-wheel axle diameter and 5-inscribed circle.

Detailed Description

The present invention will be described in further detail below with reference to the accompanying drawings by way of specific embodiments.

As shown in fig. 2 to 4, the elastic limiting body 4 is clamped and sleeved on a wheel shaft, the elastic limiting body 4 is of a closed annular structure, and at least two tangent points exist between an inner edge 4B of the elastic limiting body 4 and an outer circle of the wheel shaft. The circle formed by the tangent points is called an inscribed circle 5, as shown in fig. 5.

In this embodiment, as shown in fig. 2, the inner edge 4B of the elastic limiting body 4 has an elliptical structure, so that there are two tangent points F that are symmetrical up and down. The outer ring 4A of the elastic limiting body 4 is circular or oval.

As another embodiment of the present invention, as shown in fig. 3, the tangent plane of the inner edge 4B of the elastic limiting body 4 and the wheel axle is a plane 4C, three planes 4C tangent to the wheel axle are uniformly formed at intervals on the inner edge 4B of the elastic limiting body 4, and there are three tangent points. The outer ring 4A of the elastic limiting body is circular.

As another embodiment of the present invention, as shown in fig. 4, the tangent plane of the inner edge 4B of the elastic limiting body 4 and the wheel axle is a curved surface 4D, and three curved surfaces 4D tangent to the wheel axle are formed at the inner edge 4B of the elastic limiting body 4 at regular intervals to form three tangent points. The outer ring 4A of the elastic limiting body is of a multi-curved-surface structure.

The elastic limiting body is made of elastic materials such as polyethylene, polyformaldehyde, polytetrafluoroethylene, nylon and the like.

The following description will take the elastic limiting body with an elliptical inner edge as an example to further describe:

when the elastic limiting body is not used or is not inserted into the wheel axle, the short axis H2 of the inner edge of the elastic limiting body is the diameter of an inscribed circle, namely the diameter of the smallest inscribed circle, and the long axis H1 is 21 mm. A round rod is inserted into the elastic limiting body, then the diameter of the round rod is continuously changed and enlarged, so that the inner edge of the round rod is enlarged, and the maximum diameter of the round rod, into which the inner edge of the round rod can be inserted, is called as the maximum diameter H3 of the inscribed circle under the condition that the elastic limiting body is not damaged.

When the elastic limiting body is sleeved on a proper wheel shaft, the minimum inscribed circle is smaller than the outer diameter of the wheel shaft, and the maximum inscribed circle is larger than the outer diameter of the wheel shaft, so that the elastic limiting body can be inserted into the wheel shaft, can tightly hold the wheel shaft with certain force due to extrusion deformation, and can also slide on the shaft in the axial direction to adjust the position. The holding force can be realized by adjusting the size of the minimum inscribed circle, and the smaller the minimum inscribed circle is relative to the shaft diameter, the larger the holding force is. Meanwhile, the holding force can be changed by changing the form of the inner circle curve. For example, the larger the number of curve segments, the larger the holding force becomes for the same minimum inscribed circle.

The principle of the present invention is described below by specific numerical values, and the elastic limiting body using the principle is included in the protection scope of the present invention only for explaining the principle.

FIG. 5 shows an elastic limiting body with an elliptical inner rim and an elliptical outer rim, wherein the elastic limiting body has equal wall thickness. Fig. 5a shows the minimum inscribed circle diameter, i.e., H3-H2, fig. 5b shows the maximum inscribed circle diameter H3, and fig. 5c shows the installation state of the elastic stopper and the wheel axle.

In fig. 5, the major axis H1 has a diameter of 21mm and the minor axis H2 has a diameter of 19.2mm, and the corresponding minimum inscribed circle diameter H3 is 19.2mm, i.e., H3 is H2 and the corresponding maximum inscribed circle diameter H3 is about 20.13 mm. The outer diameter H4 of the matched wheel shaft is 20 mm. Satisfies the following conditions: the diameter of the minimum inscribed circle of the elastic spacing body is 19.2mm < the outer diameter of the wheel shaft is 20mm < the diameter of the maximum inscribed circle of the elastic spacing body is 20.13 mm. When the paper tape limiting ring is sleeved on the wheel shaft, the inner edge is expanded and can be inserted, the moderate clamping force is provided, and the paper tape limiting ring can also axially move.

It should be emphasized that the embodiments described herein are illustrative and not restrictive, and thus the present invention includes but is not limited to the embodiments described in the detailed description, as well as other embodiments derived from the technical solutions of the present invention by those skilled in the art, which also belong to the scope of the present invention.

Claims

1. The utility model provides a elasticity spacing body for labeller, elasticity spacing body presss from both sides tight suit at the shaft, its characterized in that: the elastic limiting body is of a closed annular structure, and at least two tangent points exist between the inner edge of the elastic limiting body and the outer circle of the wheel shaft.

2. The elastic spacing body of claim 1, wherein: the circle formed by the tangent points is called an inscribed circle, when the elastic limiting body is not used, the diameter of the inscribed circle is called a minimum inscribed circle diameter, when the elastic limiting body is supported to be the maximum, the diameter of the inscribed circle is called a maximum inscribed circle diameter, and the diameter of the minimum inscribed circle is smaller than the diameter of the wheel shaft and smaller than the diameter of the maximum inscribed circle.

3. The elastic spacing body of claim 1, wherein: the inner edge of the elastic limiting body is of an elliptical structure.

4. An elastic stop body for a labelling machine according to claim 3, characterised in that: the outer ring of the elastic limiting body is of a circular or oval structure.

5. An elastic stop body for a labelling machine according to claim 1, characterised in that: the tangent plane of the inner edge of the elastic limiting body and the wheel axle is a plane.

6. An elastic stop body for a labelling machine according to claim 5, characterised in that: the planes are multiple and arranged at intervals.

7. An elastic stop body for a labelling machine according to claim 1, characterised in that: the tangent surface of the inner edge of the elastic limiting body and the wheel axle is a curved surface.

8. An elastic stop body for a labelling machine according to claim 7, characterised in that: the curved surface is a plurality of and interval setting.

9. Elastic stop body for labelling machines according to claim 5 or 7, characterised in that: the outer ring of the elastic limiting body is of a circular structure.

10. An elastic stop body for a labelling machine according to claim 1, 3, 5 or 7, characterised in that: the elastic limiting body is made of polyethylene, polyformaldehyde, polytetrafluoroethylene or nylon.