JPS5853458Y2 - low torque roll - Google Patents

Description

[Detailed description of the invention] This invention is suitable for use in surface molding, conveyance, etc. of sheets and tapes used in manufacturing equipment for various types of resin films and tapes. Concerning lightweight, low-torque roll that responds sensitively to

For rolls that are required to be driven at high speeds and stopped suddenly, or whose driving speed changes rapidly, not only is it necessary to reduce the weight of the roll itself in order to reduce centrifugal force and inertia, but also to reduce the weight of the roll itself. In order to rotate with torque, the shaft diameter is generally made smaller and a smaller diameter bearing is used.

However, when the diameter of the shaft is reduced, the shaft becomes deflected during rotation, which tends to reduce the rotation accuracy of the roll.

Therefore, in the past, the diameter of the shaft was determined by these compromises.

In addition, for example, in a type in which the bearing part of the shaft is disassembled when the roll is attached or removed, the attachment and detachment work is troublesome, and centering of the bearing part is also troublesome.

The main purpose of the present invention is to provide a low-torque roll with little deflection despite using a small diameter shaft.Other purposes of the present invention are to provide a low-torque roll that is extremely easy to attach and detach, and that is easy to center. The object of the present invention is to provide a low torque roll that can be performed with high precision.

A still further object of the present invention is to provide a low torque roll that provides additional rotation in the event of bearing failure and does not come to an abrupt stop.

In the present invention, supported recesses are provided at the center of both end faces of the shaft, and the recesses reach an area close to the bearing support on the shaft, and are generally complementary to the supported recesses. It is supported by a pair of support means having shaped tips.

This substantially eliminates deflection of the shaft during rotation even if the shaft diameter is made thinner.

The shaft is interposed between these supports and normally remains stationary, but in the event of a bearing failure, it can slide and rotate on the tip, preventing sudden stoppage. This prevents secondary equipment failure.

Furthermore, one of the pair of support means is fixedly arranged and is herein referred to as fixed support means.

The other has the tip and a movable support member movable in the axial direction with respect to the fixed support means is arranged on a fixed holding member.

Thus, when the movable support member is in the forward position close to the fixed support means, the shaft is sandwiched and supported between their distal ends, and when the movable support member is in the retracted position remote from the fixed support means. , the shaft can be released from between the tips.

Adjustment means is provided for moving the movable support member between the retracted position and the forward position to ensure that the shaft is clamped between the two distal ends, thereby preventing the shaft from separating from the distal end of the image during operation. is prevented.

A spring biasing means is provided for biasing the movable support member to the forward position, which prevents loosening due to vibrations etc. during operation when the adjusting means is in the forward position, and also biases the adjusting means to the desired adjusted position. It also has the function of holding

Having outlined the present invention above, the present invention will now be further described with reference to the accompanying drawings showing specific examples of the present invention.

The attached drawings show a specific example of the present invention, for example:
Another utility model registration application filed by the applicant, Utility Model Application No. 1818-1983
A lightweight hollow roll 1, such as a lightweight aluminum hollow roll as disclosed in No. 845, has headers 2.
2' is inserted.

These headers 2, 2' are shown as annular members having a funnel-shaped hole in the center.

The small diameter bore portion 21,21' is rotatably supported on the shaft 4 via a small diameter bearing 5.5'.

The shaft 4 has supported recesses 41 and 41' formed on both end faces thereof.

In the illustrated embodiment, these supported recesses are shown as conical recesses coaxial with the central axis of the shaft 4.

The support means 3, 3' have tips 31.31' which respectively engage the supported recesses 41.41', which in the illustrated embodiment are shown as conical protrusions complementary to the conical recesses. has been done.

This conical projection facilitates centering of the rotating shaft.

The shaft 4 thus has these tips m3. ．． 1.31'
The rotary roll formed by the hollow roll 1 and a pair of headers 2 and 2' is rotatably supported via bearings 5 and 5'.

When the bearing is damaged, the shaft 4
．． It will be appreciated that sliding rotation may occur on 31'.

Since the supported recess 41.41' extends to the area close to the bearing support 42.42' on the shaft 4 and the shaft is supported in this supported recess, the conventional shaft structure is further improved. Even if the diameter is made smaller, the shaft will not bend during rotation.

The support means 3' is a fixed support means in which the tip 31' is fixedly disposed, and in this specific example, the tip 31' is fixedly disposed.
1', and retaining means 33' for holding it fixedly.

The holding means 33' is fixed to the machine frame □ or the machine base by suitable means, and the support member 32' is received in the sleeve and fixed by suitable fixing means, such as bolts 34'.

However, such a structure is just one example.

The support means 3 are shown as including a movable support member 32 having the tip 31 and movable in the axial direction of the nuclear shaft and a retaining member 33 for movably retaining it.

The holding member 33 is fixed to the machine frame or the machine base by suitable means, and the supporting member 32 is received in a sleeve and held movably in the axial direction.

On the axially outer side of the sleeve, a cover body 35 is provided with a bolt 34, for example.
It is fixed to the holding member 33 by suitable fixing means such as.

In addition, in order to attach rolls of different lengths, the holding member 33
may be installed so as to be movable in the axial direction.

Adjustment means for moving the movable support member 32 between a retracted position remote from the fixed support means 3' and an advanced position proximate it (the position shown) and for holding the shaft 4 in position. 36 are provided.

In the illustrated embodiment, this adjustment means 36 is shown as a single bolt threaded through a hole in the lid 35 and into a threaded hole in the movable support member 32.

Furthermore, spring biasing means 37 are provided for constantly biasing the movable support member 32 towards the forward position.

In the illustrated embodiment, the spring biasing means 37 are arranged between the sleeve of the retaining member 33 and a reduced diameter portion of the movable support member received therein.
One end thereof is supported by the lid 35, and the other end is brought into contact with the stepped portion of the movable support member to apply a biasing force thereto.

Thus, when the adjustment means 36 is retracted, the movable support member retracts with it, compressing the spring biasing means.

The shaft 4 can thus be easily removed from the pair of support means 3.3'.

Although one specific example of the present invention has been described in detail above,
The illustrated example is only one specific example of the present invention, and the present invention may include various modifications within the scope of the technical idea of the present invention described in the above-mentioned utility model registration claims, specification, and drawings. Deformation is possible.

[Brief explanation of the drawing]

The drawing is an axial vertical cross-sectional view of a low torque roll according to the present invention. A brief explanation of the symbols: 1: Light hollow roll, 2゜2': Heragu, 3, 3/: Support means, 4: Shaft,
5, 5': Bearing, 21.21': Hole portion, 31.
31': Tip part, 32: Movable support member, 32':
Supporting member, 33: Holding member, 33': Holding means, 34.
34': Bolt, 35: Lid, 36: Adjustment means, 37:
Spring biasing means, 41. 41': Supported recess, 42
．． 42': Bearing support part.

Claims (2)

[Scope of utility model registration request] (1) One lightweight hollow roll and a pair of holes inserted and fixed at both ends of the roll. In a low-torque roll of the type in which a rotary roll having a groove is rotatably supported on a small-diameter stationary shaft via a bearing, (b) a pair of supports each having a supported recess that reaches an area close to the supported position of the bearing, and (b) a pair of supports that each have a tip that engages with the supported recess and supports the shaft; (c) one of the pair of support means is a fixed support means in which the tip is fixedly disposed; (d) the other of the pair of support means is a fixed support means for fixing the tip; a movable support member that is movable in the axial direction of the shaft; a fixedly disposed holding member that holds the movable support member so as to be movable in the axial direction; adjusting means for moving the shaft between a retracted position away from the fixed support member and an advanced position proximate the fixed support means to maintain the shaft in the fixed device; (e) when said movable support member is forced into an advanced position by said adjustment means, said shaft is adapted to engage the distal end of the fixed support means and the distal end of the movable support member; It is supported between the bearings and does not normally rotate, and when the above bearing fails,
The shaft rotates slidingly between the supported recess and the tip, and when the adjusting means is retracted, the movable support member is moved against the biasing force of the spring biasing means. and a low-torque roll, characterized in that the rotating roll supported thereon is configured to be easily removable and removable. (2) The supported recesses formed on both end faces of the shaft are conical recesses formed coaxially with the central axis of the shaft, and the tips of the support means that engage with them are The low torque roll 0 described in l above, which is a conical protrusion complementary to the recess.