CN211518479U

CN211518479U - Tension control device of BOPP film stretching mechanism

Info

Publication number: CN211518479U
Application number: CN201922225273.7U
Authority: CN
Inventors: 方文彬; 方晨; 刘文顺; 刘志辉; 蒋立凤
Original assignee: Guizhou Jintian New Material Technology Co ltd
Current assignee: Guizhou Jintian New Material Technology Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-18
Anticipated expiration: 2029-12-12

Abstract

The utility model belongs to the technical field of the membrane processing, the utility model discloses a tension control device of BOPP membrane drawing mechanism, include the auxiliary forming mechanism and be located the tensile chamber in the auxiliary forming mechanism, the rotation is connected with a plurality of evenly distributed's tensile cylinder in the tensile chamber, the tensile cylinder includes the drive cylinder that rotates to be connected in the tensile chamber and the sleeve that the cover is established outside the drive cylinder, the internal rotation of drive cylinder is connected with the regulation section of thick bamboo; the inserting groove shape and specification in different sleeves have consistency, so that the processing difficulty and the processing cost of the sleeves are reduced, the adjusting column is rotated to enable the adjusting cylinder to displace forwards and backwards, the wedge block and the adjusting chute are matched to slide up and down at the moment, and then the inserting rib and the inserting groove are driven to be attached to complete the fixation of the sleeves.

Description

Tension control device of BOPP film stretching mechanism

Technical Field

The utility model belongs to the technical field of the membrane processing, specifically a BOPP membrane tension control device of tensile mechanism.

Background

Along with the continuous development of social economy, the use amount of the plastic film is larger and larger, the plastic film is generally produced in a wide range during production, and the plastic film needs to be cut into small pieces according to different production requirements after the production is finished. The production of the BOPP film is that the melt of high molecular polypropylene is firstly made into a sheet or a thick film through a long and narrow machine head, and then under a certain temperature and a set speed, the BOPP film is longitudinally and transversely stretched through a longitudinal stretching mechanism and a transverse stretching mechanism in sequence to realize that the width and the thickness of the BOPP film meet the production requirements.

Chinese patent discloses an inlet tension control device of a BOPP film longitudinal stretching mechanism, the disclosure number of which is (CN206326848U), the patent detects the pressure on a tension roller 2 when the BOPP film is transmitted through a pressure sensor 3, then adjusts the transmission speed of the longitudinal stretching mechanism, the tension control device is arranged at the inlet of the longitudinal stretching mechanism, the stretching effect of the BOPP film is better controlled, however, the patent finishes the stretching purpose of the film by mutually coordinating a plurality of rollers, because the stretching of different films needs to change the rollers with different diameters to mutually cooperate, the patent mainly drives the roller to rotate through a chain wheel, the roller is not practical at the moment, most of the existing driving rollers adopt a sleeve for replacing the edge of the roller, as shown in figure 4 in the technical scheme, the bearing roller needs to cooperate with a mounting roller through an inserting rib, when the diameter of the bearing roller increases, the height of the splicing ribs needs to be increased, so that cost waste is caused, the splicing ribs produced by each roller are different in length, the manufacturing cost is increased, and the applicability is reduced. Accordingly, a tension control device of a BOPP film stretching mechanism is provided by those skilled in the art to solve the above problems in the background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a BOPP membrane tension control device of drawing mechanism to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a tension control device of a BOPP film stretching mechanism comprises an auxiliary forming mechanism and a stretching cavity positioned in the auxiliary forming mechanism, wherein a plurality of stretching rollers which are uniformly distributed are rotatably connected in the stretching cavity, each stretching roller comprises a driving barrel which is rotatably connected in the stretching cavity and a sleeve which is sleeved outside the driving barrel, the driving barrel is rotatably connected with an adjusting barrel, the outer wall of the adjusting barrel is provided with a plurality of adjusting chutes which are uniformly distributed, the adjusting chutes are slidably connected with wedge blocks in the adjusting chutes, the upper end surface of each wedge block is fixedly connected with a supporting rod, the outer wall of the driving barrel is provided with a plurality of sliding holes which are matched with the supporting rod, the outer wall of the adjusting barrel is fixedly connected with four splicing ribs which are annularly distributed through the supporting rod, one end of the driving barrel is provided with a threaded hole, and one end of, adjust the post outer wall seted up with screw hole complex screw thread portion, drive a section of thick bamboo inner wall and keep away from adjust post one end fixedly connected with gag lever post, adjust a section of thick bamboo and be close to gag lever post one side seted up with gag lever post complex regulation hole.

As a further aspect of the present invention: the inner wall of the sleeve is provided with four insertion grooves matched with the insertion ribs.

As a further aspect of the present invention: the length of the insertion rib is smaller than that of the sleeve.

As a further aspect of the present invention: one end of the driving cylinder, which is far away from the adjusting column, is fixedly connected with a connecting column.

As a further aspect of the present invention: the length of the adjusting hole is larger than that of the thread part.

As a further aspect of the present invention: the width between the adjusting cylinder and the inner wall of the driving cylinder is smaller than the length of the right-angle edge of the wedge block.

As a further aspect of the present invention: and one side of the side wall of the adjusting column, which is far away from the threaded part, is provided with a knurl.

Compared with the prior art, the beneficial effects of the utility model are that:

the main rotation of drive cylinder is connected and is unable to be dismantled in tensile intracavity, and the inserting groove has been seted up to the sleeve inner wall, inserting groove shape and specification in the different sleeves this moment has the uniformity, thereby telescopic processing degree of difficulty and processing cost have been reduced, and through rotating the displacement around the regulation post messenger regulation section of thick bamboo, the voussoir slides from top to bottom with adjusting the chute cooperation this moment, and then it accomplishes telescopic fixed with the inserting groove laminating to drive the grafting muscle, the convenience of operation and telescopic suitability have been improved through this method, the material waste because the grafting muscle leads to the fact has been reduced, thereby the practicality has more.

Drawings

Fig. 1 is a schematic structural diagram of a tension control device of a BOPP film stretching mechanism;

FIG. 2 is a schematic cross-sectional view of a stretching roller in a tension control device of a BOPP film stretching mechanism;

FIG. 3 is a schematic side sectional view of a stretching roller in a tension control device of a BOPP film stretching mechanism;

figure 4 is a schematic view of a prior art load bearing roller installation.

In the figure: 1. an auxiliary forming mechanism; 2. a stretching chamber; 3. stretching the roller; 31. an adjusting cylinder; 311. adjusting the chute; 312. an adjustment hole; 32. a drive cylinder; 321. a limiting rod; 322. a slide hole; 323. connecting columns; 324. a threaded hole; 33. a wedge block; 331. a support bar; 34. a sleeve; 341. inserting grooves; 35. inserting ribs; 36. an adjustment column; 361. a threaded portion.

Detailed Description

Referring to fig. 1-3, in the embodiment of the present invention, a tension control device for a BOPP film stretching mechanism includes an auxiliary forming mechanism 1 and a stretching cavity 2 located inside the auxiliary forming mechanism 1, a plurality of stretching rollers 3 uniformly distributed are rotatably connected in the stretching cavity 2, each stretching roller 3 includes a driving cylinder 32 rotatably connected in the stretching cavity 2 and a sleeve 34 sleeved outside the driving cylinder 32, an adjusting cylinder 31 is rotatably connected in the driving cylinder 32, a plurality of adjusting chutes 311 uniformly distributed are formed on an outer wall of the adjusting cylinder 31, wedges 33 are slidably connected in the adjusting chutes 311, a support rod 331 is fixedly connected to an upper end surface of each wedge 33, a plurality of sliding holes 322 matched with the support rod 331 are formed on an outer wall of the driving cylinder 32, four insertion ribs 35 annularly distributed are fixedly connected to an outer wall of the adjusting cylinder 31 through the support rod 331, a threaded hole 324 is formed at one end of the driving cylinder, one end of the adjusting cylinder 31 is rotatably connected with an adjusting column 36, the outer wall of the adjusting column 36 is provided with a threaded portion 361 matched with the threaded hole 324, one end of the inner wall of the driving cylinder 32, which is far away from the adjusting column 36, is fixedly connected with a limiting rod 321, one side of the adjusting cylinder 31, which is close to the limiting rod 321, is provided with an adjusting hole 312 matched with the limiting rod 321, the auxiliary forming mechanism 1 mainly comprises a preheating zone mechanism, a stretching zone mechanism and a shaping zone mechanism, a stretching cavity 2 is a general name of the inner cavity of the auxiliary forming mechanism 1, a plurality of stretching rollers 3 are arranged in the stretching cavity 2, the stretching rollers 3 are matched with one another to stretch films passing between the stretching rollers 3, rollers with different diameters are matched with one another due to the stretching of different films, during replacement, the adjusting column 36 is rotated, the adjusting column 36 is matched with the threaded portion 361 and the threaded hole 324 to drive the adjusting cylinder 31 to, make voussoir 33 lapse, voussoir 33 drives bracing piece 331 and slides in sliding hole 322 to drive grafting muscle 35 and shrink inwards, grafting muscle 35 breaks away from spacingly with inserting groove 341 this moment, thereby accomplish the dismantlement of sleeve 34, reverse operation is the installation promptly, has improved the convenience of operation and sleeve 34's suitability through this method, has reduced because the material waste that grafting muscle 35 caused, thereby has the practicality more.

In fig. 1: the side of the side wall of the adjusting column 36, which is far away from the threaded portion 361, is provided with a knurl, which can increase the friction force on the surface of the adjusting column 36, so that the operator can rotate the adjusting column 36 more conveniently.

In fig. 2: four grafting muscle 35 complex inserting grooves 341 are seted up to sleeve 34 inner wall, and the length of grafting muscle 35 is less than sleeve 34's length, through grafting muscle 35 and inserting grooves 341 cooperation, can effectually prevent that sleeve 34 from taking place the rotational friction with grafting muscle 35, and grafting muscle 35 length is less than sleeve 34's length, and inserting grooves 341 both ends are sealed this moment, make grafting muscle 35 unable follow inserting grooves 341 both ends roll-off.

In fig. 3: the end of the driving cylinder 32 far from the adjusting column 36 is fixedly connected with a connecting column 323, and the connecting column 323 can be directly connected with the inner wall of the stretching cavity 2 in a rotating manner, or a transmission mechanism is installed, for example, a chain wheel is in transmission connection with an external driving mechanism through a chain.

In fig. 3: the length of the adjusting hole 312 is larger than that of the threaded part 361, the stability of the rotating connection between the adjusting cylinder 31 and the driving cylinder 32 is achieved through the matching of the adjusting hole 312 and the connecting column 323, and the condition that the adjusting hole 312 is larger than the threaded part 361 can prevent the adjusting hole 312 and the connecting column 323 from slipping is avoided.

In fig. 3: the width between the inner walls of the adjusting cylinder 31 and the driving cylinder 32 is smaller than the length of the right-angle side of the wedge 33, when the width between the inner walls of the adjusting cylinder 31 and the driving cylinder 32 is smaller than the length of the right-angle side of the wedge 33, the wedge 33 cannot slip with the adjusting chute 311, and the sliding stability of the wedge 33 is improved.

The utility model discloses a theory of operation is: the auxiliary forming mechanism 1 mainly comprises a preheating zone mechanism, a stretching zone mechanism and a shaping zone mechanism, wherein a stretching cavity 2 is a general name of an inner cavity of the auxiliary forming mechanism 1, a plurality of stretching rollers 3 are arranged in the stretching cavity 2, the stretching rollers 3 are mutually matched to stretch films passing through the stretching rollers 3, rollers with different diameters are required to be changed for stretching different films to be mutually matched, when the films are replaced, an adjusting column 36 is rotated, the adjusting column 36 is matched with threads of a threaded part 361 and a threaded hole 324 to drive an adjusting cylinder 31 to axially slide in a driving cylinder 32, an adjusting chute 311 is matched with a wedge 33 to enable the wedge 33 to downwards slide, the wedge 33 drives a supporting rod 331 to slide in a sliding hole 322 to drive an inserting rib 35 to inwards shrink, the inserting rib 35 is separated from a inserting groove 341 for limiting, so that the sleeve 34 is disassembled and reversely operated, namely installed, and the convenience of operation and the applicability of the sleeve 34 are improved by the method, the material waste caused by the inserting ribs 35 is reduced, and the practicability is better.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The tension control device of the BOPP film stretching mechanism comprises an auxiliary forming mechanism (1) and a stretching cavity (2) which is positioned inside the auxiliary forming mechanism (1), wherein a plurality of stretching rollers (3) which are uniformly distributed are rotationally connected in the stretching cavity (2), the stretching rollers (3) comprise a driving barrel (32) which is rotationally connected in the stretching cavity (2) and a sleeve (34) which is sleeved outside the driving barrel (32), a regulating barrel (31) is rotationally connected in the driving barrel (32), a plurality of uniformly distributed regulating chutes (311) are formed in the outer wall of the regulating barrel (31), wedge blocks (33) are slidably connected in the regulating chutes (311), supporting rods (331) are fixedly connected to the upper end faces of the wedge blocks (33), a plurality of sliding holes (322) which are matched with the supporting rods (331) are formed in the outer wall of the driving barrel (32), the outer wall of the adjusting cylinder (31) is fixedly connected with four insertion ribs (35) which are distributed annularly through the supporting rod (331);

drive a section of thick bamboo (32) one end set up threaded hole (324), it is connected with regulation post (36) to adjust a section of thick bamboo (31) one end rotation, adjust post (36) outer wall set up with screw hole (324) complex screw thread portion (361), drive a section of thick bamboo (32) inner wall is kept away from adjust post (36) one end fixedly connected with gag lever post (321), it is close to adjust a section of thick bamboo (31) gag lever post (321) one side set up with gag lever post (321) complex regulation hole (312).

2. The tension control device of the BOPP film stretching mechanism as claimed in claim 1, wherein the inner wall of the sleeve (34) is provided with four insertion grooves (341) matched with the insertion ribs (35).

3. The tension control device of a BOPP film stretching mechanism according to claim 1, wherein the length of the insertion rib (35) is smaller than the length of the sleeve (34).

4. The tension control device of the BOPP film stretching mechanism according to claim 1, wherein a connecting column (323) is fixedly connected to one end of the driving cylinder (32) far away from the adjusting column (36).

5. The tension control device of the BOPP film stretching mechanism according to claim 1, wherein the length of the adjusting hole (312) is greater than the length of the threaded portion (361).

6. The tension control device of the BOPP film stretching mechanism according to claim 1, wherein the width between the adjusting cylinder (31) and the inner wall of the driving cylinder (32) is smaller than the length of the right-angle side of the wedge block (33).

7. The tension control device of the BOPP film stretching mechanism according to claim 1, wherein the side wall of the adjusting column (36) far away from the threaded portion (361) is knurled.