CN2399557Y

CN2399557Y - Tension bridle for press roller driving chain of plastic calender

Info

Publication number: CN2399557Y
Application number: CN 99228977
Authority: CN
Inventors: 高学飞; 闵凯; 陈斌
Original assignee: JIANGSU VICTORY MACHINERY CO Ltd
Current assignee: JIANGSU VICTORY MACHINERY CO Ltd
Priority date: 1999-07-21
Filing date: 1999-07-21
Publication date: 2000-10-04
Anticipated expiration: 2009-07-21

Abstract

The utility model provides a tension device for a press roller transmission chain of a plastic calender. When the utility model is adopted, two tension pulleys are arranged on a T-shaped chain wheel supporting seat, the supporting seat is installed on a supporting shaft which is fixedly connected with a wall board, the supporting seat and the supporting shaft can rotate correspondingly, a rolling column is arranged in a chute which is arranged on the tail end of the T-shaped chain wheel supporting seat, and the rolling column is rotationally connected with an outer end head of a push rod of a damping cylinder mutually. The utility model has the advantages that the tension of the chain can be automatically adjusted, the transmission of a transmission mechanism is stable, the vibration of the transmission mechanism is small, and a relative constant value of the tensioning degree of the chain can be always maintained when the chain is utilized to transfer the motive power, and a transmission chain which is used for driving three rollers of the calender can be automatically and quickly adjusted to have the suitable length after a spacing distance between three rollers of the calender is adjusted.

Description

The tension device of plastics calender pressure roller drive chain

The utility model belongs to the mechanical transmission tension device, relates in particular to the tension device of plastics calender pressure roller drive chain.

Calender is to make one of capital equipment in the plastics extrudate piece production process, it be by three rollers to rolling, the plastics after the heating are pushed a kind of equipment that makes frosting become smooth.These three rollers normally adopt the type of belt drive of worm and gear, when needs adjustment during by the thickness of press polish plastics, must regulate the distance between shafts of each roller, if the diameter difference of three rollers just can not adopt the kind of drive of worm and gear.For this reason, present mode of having used chain transmission instead drives three rollers.In chain transmission, because the roller up and down in three rollers usually needs to adjust relative spacing with middle roller according to the thickness of required goods, thus, the chain that drives these three rollers also needs to adjust its length.The method of adjusting chain length commonly used is in manual mode, and the position of adjusting Idle wheel makes chain tension.Manual adjustment both bothered, and can not adjust its rate of tension in right amount again.Usually make for this reason that the transmission of three rollers is not steady, and then cause the surface finishment of goods to descend.

The purpose of this utility model is: the tension device that a kind of drive chain of plastics calender pressure roller is provided.

For achieving the above object, the utility model is that the axle head in three press polish roller driving ends, the wallboard outside respectively is connected with a sprocket wheel with key, also is provided with a sprocket wheel as third wheel in the outside of wallboard; Chain is meshed with sprocket wheel, third wheel on three roller axles, and chain also is meshed with drive sprocket.Also be fixed with a back shaft in the outside of wallboard, back shaft be provided with one can with back shaft T-shape chain wheeling support in relative rotation, the tail end of T-shape chain wheeling support is provided with a chute, be provided with a roller in the chute, the push rod external end head of a roller and a damping cylinder is rotationally connected mutually, and damping cylinder is fixed in the wallboard outside with bolt; Respectively be connected with a minor axis at the head two ends of T-shape chain wheeling support, respectively be provided with a tension sprocket that can rotate mutually with minor axis on the minor axis, the mesh form of tension sprocket and chain is " S " shape.

The tension force that the utility model has the advantages that chain can be adjusted into a steady state value automatically, and the driving mechanism stable drive is vibrated little.

Below in conjunction with accompanying drawing the utility model is done explanation in further detail:

Fig. 1 is a transmission schematic representation of the present utility model;

The A-A sectional view of Fig. 2 the utility model Fig. 1;

The B-B sectional view of Fig. 3 the utility model Fig. 1;

Among Fig. 1, Fig. 2, Fig. 3, the utility model is in the axial end in the driving end of three press polish rollers 17,18,19, wallboard 1 outside, respectively is connected with

sprocket wheel

2,3,5 with key 22,21,20 respectively, also is provided with a chain third wheel 15 in the outside of wallboard 1; Third wheel 15 be installed in one with the affixed minor axis 16 of wallboard 1 on, third wheel 15 can rotate mutually with minor axis 16, chain 4 is meshed with

sprocket wheel

2,3,5 and third wheel 15 on three roller axles, and chain 4 also is meshed with drive sprocket 6, and drive sprocket 6 joins with power source.Also be fixed with a back shaft 9 in the outside of wallboard 1, back shaft 9 is affixed with wallboard 1 with nut 25, packing ring 26, back shaft 9 be provided with one can with back shaft 9 T-shape chain wheeling support 13 in relative rotation, the tail end of T-shape chain wheeling support 13 is provided with a chute 11, be provided with a roller 12 in the chute 11, the external end head of the push rod 10 of a roller 12 and a damping cylinder 7 is rotationally connected mutually, and damping cylinder 7 usefulness bolts 27 are fixed in the outside of wallboard 1; Respectively be connected with a minor axis 23,24 at the head two ends of T-shape chain wheeling support 13, respectively be provided with a

tension sprocket

14,8 that can rotate mutually with minor axis on the minor axis 23,24, the mesh form of tension sprocket 14,8 and chain 4 is " S " shape.

When adjusting the distance between shafts of roller 17,19 and roller 18, the rate of tension of chain 4 changes, pass to damping cylinder 7 in the sprocket wheel tensioning mechanism by chain 4, damping cylinder 7 has a cover to adjust interior device of pressing automatically, make damping cylinder 7 interior pressures remain a steady state value, make 13 actions of T-shape chain wheeling support by push rod 10, thereby reach the effect of drive chain 4 automatic constantforce tensionings.

Claims

1, a kind of tension device of plastics calender pressure roller drive chain is that the axle head in three press polish roller driving ends, the wallboard outside respectively is connected with a sprocket wheel with key, also is provided with a sprocket wheel as third wheel in the outside of wallboard; Chain is meshed with sprocket wheel, third wheel on three roller axles, and chain also is meshed with drive sprocket; It is characterized in that: be fixed with a back shaft in the outside of wallboard, back shaft be provided with one can with back shaft T-shape chain wheeling support in relative rotation, the tail end of T-shape chain wheeling support is provided with a chute, be provided with a roller in the chute, the push rod external end head of a roller and a damping cylinder is rotationally connected mutually, and damping cylinder is fixedly mounted on the wallboard outside; Respectively be connected with a minor axis at the head two ends of T-shape chain wheeling support, respectively be provided with a tension sprocket that can rotate mutually with minor axis on the minor axis.

2, the tension device of plastics calender pressure roller drive chain according to claim 1, it is characterized in that: the mesh form of tension sprocket and chain is " S " shape.