CN210552974U

CN210552974U - MDO stretching roller

Info

Publication number: CN210552974U
Application number: CN201921337719.9U
Authority: CN
Inventors: 虞阿五; 俞炳仙; 殷红兵
Original assignee: Shaoxing Riyue New Material Co Ltd
Current assignee: Shaoxing Riyue New Material Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-05-19
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to a relevant technical field of drawing roller just discloses a MDO drawing roller, which comprises a mounting bracket, the inboard of mounting bracket is provided with drawing roller, the equal hollow pivot of fixedly connected with in both ends about the mounting bracket, two the one end that hollow pivot was carried on the back mutually runs through the mounting bracket respectively through the location bearing and controls the inside wall and extend to the outside of mounting bracket, and the mounting hole has all been seted up at both ends about drawing roller, and the equal fixed mounting in inboard of two mounting holes has sealed bearing, and the inboard of two sealed bearing is all fixed to be alternate has the drain hollow shaft, the port of drain hollow shaft extends to the outside of corresponding hollow pivot respectively, drawing roller's outside activity is alternate has the contact outer lane. This MDO stretching roller avoids stretching roller to carry out direct contact, loss when reducing the equipment use, the life of effectual extension equipment, and the stable cooperation between contact outer lane and the stretching roller has been ensured in the use of metal heat-conducting layer simultaneously.

Description

MDO stretching roller

Technical Field

The utility model relates to a relevant technical field of stretching roller specifically is a MDO stretching roller.

Background

The polyester film (PET) is a film material which is prepared by using polyethylene glycol terephthalate as a raw material, preparing a thick sheet by an extrusion method and performing biaxial tension. The original machine random stretching roller is made of Teflon material, but can only use 4 months under the current process, the service life is long enough, and less can only use 2 months, according to the situation, a development official group is established, the research is started from the process and the equipment, the formula and the processing process of the surface coating are changed through cooperation with external work, the adhesion is reduced by increasing the roughness of the surface, after the surface coating is operated for a long time, the surface coating is worn and still adheres to the roller, the effect cannot be achieved, and the scratch appears on the surface of the film after the roughness is increased, so the inventor designs a novel MDO stretching roller to reduce the occurrence of the wearing and adhering conditions of the surface of the film.

SUMMERY OF THE UTILITY MODEL

The problem that the existing MDO stretching roller is easy to wear and stick to the roller is solved.

An MDO stretching roller comprises a mounting frame, stretching rollers are arranged on the inner side of the mounting frame, hollow rotating shafts are fixedly connected to the left end and the right end of the mounting frame, the opposite ends of the two hollow rotating shafts penetrate through the left inner side wall and the right inner side wall of the mounting frame respectively through positioning bearings and extend to the outer side of the mounting frame, mounting holes are formed in the left end and the right end of each stretching roller, sealing bearings are fixedly mounted on the inner sides of the two mounting holes, liquid guiding hollow shafts are fixedly inserted into the inner sides of the two sealing bearings, ports of the liquid guiding hollow shafts respectively extend to the outer sides of the corresponding hollow rotating shafts, contact outer rings are movably inserted into the outer sides of the stretching rollers, positioning discs are fixedly bonded to the left end and the right end of each stretching roller, limiting discs are fixedly connected to the two positioning discs through positioning bolts, and positioning outer rings are fixedly connected to the, the side faces of the ring openings, opposite to the two positioning outer rings, of the ring openings are respectively contacted with the surfaces of the left ring opening and the right ring opening of the contact outer ring, and a metal heat conduction layer is arranged on the inner side of the contact outer ring.

Preferably, the fit relation between the metal heat conduction layer on the inner side of the contact outer ring and the outer side wall of the stretching roller is interference fit, and the outer diameter of the contact outer ring is equal to that of the limiting disc.

Preferably, the two limiting discs are respectively contacted with the surfaces of the corresponding positioning discs, the outer diameters of the limiting discs are larger than that of the positioning discs, and the inner diameter of the positioning outer ring is larger than that of the positioning discs.

Preferably, the inner diameter of the hollow rotating shaft is larger than that of the mounting hole of the sealing bearing, and a gap is reserved between the outer side wall of the hollow rotating shaft and the inner side wall of the corresponding limiting disc.

Preferably, the hollow rotating shafts at the two ends of the stretching roller are symmetrically arranged around the stretching roller, and the outer side walls of the two hollow rotating shafts are fixedly connected with the positioning disc.

Preferably, the opposite side surfaces of the two positioning outer rings and the surfaces of the left and right ports contacting the outer ring are rough surfaces and are contacted and pressed for fixing.

The utility model has the advantages that:

(1) this MDO stretching roller, through setting up stretching roller, hollow rotating shaft, sealing bearing, the contact outer lane, positioning disk and location outer loop are mutually supported, when equipment uses, the contact outer lane carries out the contact friction with the polyester film that needs carry out stretching, avoid stretching roller to carry out direct contact, loss when reducing equipment uses, positioning disk and spacing dish interconnect compress tightly fixedly the contact outer lane through the location outer lane simultaneously, be convenient for contact outer lane change maintenance after long-time the use, thereby effectual extension equipment's life.

(2) This MDO stretch roller mutually supports through setting up contact outer lane and metal heat-conducting layer, and when equipment uses, the heat that stretch roller surface was conducted is conducted for the contact outer lane through the metal heat-conducting layer to the produced thermal transmission of guarantee equipment reduces the thermal loss of equipment and heat altered shape volume, and the use of metal heat-conducting layer has ensured the stable cooperation between contact outer lane and the stretch roller simultaneously.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is a schematic view of the present invention.

In the figure: the device comprises a mounting frame 1, a stretching roller 2, a hollow rotating shaft 3, a sealing bearing 4, a liquid guiding hollow shaft 5, a contact outer ring 6, a positioning disk 7, a limiting disk 8, a positioning bolt 9, a positioning outer ring 10 and a metal heat conducting layer 11.

Detailed Description

As shown in fig. 1-3, the utility model provides a technical solution: an MDO stretching roller comprises a mounting frame 1, wherein a stretching roller 2 is arranged on the inner side of the mounting frame 1, hollow rotating shafts 3 are fixedly connected to the left end and the right end of the mounting frame 1, the opposite ends of the two hollow rotating shafts 3 respectively penetrate through the left inner side wall and the right inner side wall of the mounting frame 1 through positioning bearings and extend to the outer side of the mounting frame 1, mounting holes are formed in the left end and the right end of the stretching roller 2, sealing bearings 4 are fixedly mounted on the inner sides of the two mounting holes, liquid guiding hollow shafts 5 are fixedly inserted into the inner sides of the two sealing bearings 4, the end ports of the liquid guiding hollow shafts 5 respectively extend to the outer sides of the corresponding hollow rotating shafts 3, contact outer rings 6 are movably inserted into the outer sides of the stretching roller 2, positioning discs 7 are fixedly bonded to the left end and the right end of the stretching roller 2, limiting discs 8 are fixedly connected to the two positioning discs 7 through positioning, a gap is reserved between the outer side wall of the hollow rotating shaft 3 and the inner side wall of the corresponding limiting disc 8, the hollow rotating shafts 3 at the two ends of the stretching roller 2 are symmetrically arranged relative to the stretching roller 2, the outer side walls of the two hollow rotating shafts 3 are fixedly connected with a positioning disc 7, the opposite side surfaces of the two limiting discs 8 are fixedly connected with positioning outer rings 10, the opposite side surfaces of the two positioning outer rings 10 and the surfaces of the left and right ports of the contact outer ring 6 are rough surfaces and are contacted and pressed for fixation, the two limiting discs 8 are respectively contacted with the corresponding surfaces of the positioning disc 7, the outer diameter of each limiting disc 8 is larger than that of the positioning disc 7, the inner diameter of each positioning outer ring 10 is larger than that of the positioning disc 7, the opposite ring port side surfaces of the two positioning outer rings 10 are respectively contacted with the surfaces of the left and right ring ports of the contact outer ring 6, the inner side of the contact outer ring, the outer diameter of the contact outer ring 6 is equal to the outer diameter of the limiting disc 8.

When equipment uses, contact outer lane 6 carries out the contact friction with the polyester film that needs carry out the drawing, avoid stretch roller 2 to carry out the direct contact, loss when reducing equipment uses, positioning disk 7 and spacing dish 8 interconnect compress tightly fixedly through location outer loop 10 to contact outer lane 6 simultaneously, the change maintenance of contact outer lane 6 after long-time the use of being convenient for is maintained, the heat that stretch roller 2 surface was conducted is conducted and is given contact outer lane 6 through metal heat-conducting layer 11, thereby the produced thermal transmission of guarantee equipment, reduce the thermal loss of equipment and heat altered shape volume, the stable cooperation between contact outer lane 6 and stretch roller 2 has been ensured in the use of metal heat-conducting layer 11 simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An MDO stretching roll, includes mounting bracket (1), its characterized in that: the inner side of the mounting frame (1) is provided with a stretching roller (2), the left end and the right end of the mounting frame (1) are fixedly connected with hollow rotating shafts (3), the back-to-back ends of the two hollow rotating shafts (3) respectively penetrate through the left inner side wall and the right inner side wall of the mounting frame (1) through positioning bearings and extend to the outer side of the mounting frame (1), the left end and the right end of the stretching roller (2) are respectively provided with a mounting hole, the inner sides of the two mounting holes are respectively and fixedly provided with a sealing bearing (4), the inner sides of the two sealing bearings (4) are respectively and fixedly inserted with a liquid guiding hollow shaft (5), the port of the liquid guiding hollow shaft (5) respectively extends to the outer side of the corresponding hollow rotating shaft (3), the outer side of the stretching roller (2) is movably inserted with a contact outer ring (6), the left end and the right end of the stretching roller (2) are respectively and fixedly bonded with positioning discs (7), and the two, two equal fixedly connected with location outer ring (10) in the side that spacing dish (8) is relative, two the ring mouth side that location outer ring (10) is relative contacts with the ring mouth surface about contact outer lane (6) respectively, the inboard of contact outer lane (6) is provided with metal heat-conducting layer (11).

2. The MDO draw roll of claim 1, wherein: the metal heat conduction layer (11) on the inner side of the contact outer ring (6) and the outer side wall of the stretching roller (2) are in interference fit, and the outer diameter of the contact outer ring (6) is equal to that of the limiting disc (8).

3. The MDO draw roll of claim 1, wherein: the two limiting discs (8) are respectively contacted with the surfaces of the corresponding positioning discs (7), the outer diameters of the limiting discs (8) are larger than the outer diameters of the positioning discs (7), and the inner diameters of the positioning outer rings (10) are larger than the outer diameters of the positioning discs (7).

4. The MDO draw roll of claim 1, wherein: the inner diameter of the hollow rotating shaft (3) is larger than that of the mounting hole of the sealing bearing (4), and a gap is reserved between the outer side wall of the hollow rotating shaft (3) and the inner side wall of the corresponding limiting disc (8).

5. The MDO draw roll of claim 1, wherein: the outer side wall of the hollow rotating shaft (3) is fixedly connected with the positioning disc (7).

6. The MDO draw roll of claim 1, wherein: the opposite side surfaces of the two positioning outer rings (10) and the surfaces of the left and right ports contacting the outer ring (6) are rough surfaces and are contacted and pressed for fixation.