CN211968413U

CN211968413U - Pressing device for pressing plastic film and paper

Info

Publication number: CN211968413U
Application number: CN202020451972.3U
Authority: CN
Inventors: 欧伟; 王振宇
Original assignee: Chongqing Shengyu Printing Co ltd
Current assignee: Chongqing Shengyu Printing Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-20
Anticipated expiration: 2030-03-31

Abstract

The utility model belongs to the technical field of packaging bag processing, in particular to a pressing device for pressing plastic films and paper, which comprises a film feeding unit, a paper feeding unit, a pressing unit and a rolling unit, wherein the film feeding unit, the paper feeding unit, the pressing unit and the rolling unit are sequentially arranged along the transmission direction of the plastic films; the pressing unit comprises a supporting mechanism and a pressing mechanism positioned above the supporting mechanism, and the pressing mechanism comprises a telescopic part and a pressing roller rotatably connected to the lower part of the telescopic part; the supporting mechanism comprises a supporting platform and a supporting roller which is rotatably connected to the supporting platform, and the supporting roller and the press-fit roller are arranged oppositely. In this scheme, can be easy adjust the position of pressfitting roller through adjusting the pars contractilis, ensure that the pressfitting roller can exert the pressure of suitable size to paper, plastic film, easy operation is convenient.

Description

Pressing device for pressing plastic film and paper

Technical Field

The utility model belongs to the technical field of the wrapping bag processing, concretely relates to plastic film and paper compression fittings for pressfitting.

Background

The film covering is a main technology of post-printing processing, and is characterized by that the plastic film coated with adhesive and paper printed matter are heated, pressurized and adhered together to form a paper-plastic integrated product, which is one of the existent common post-printing processing technologies of paper printed matter. The surface of the printed matter after being coated with the film is provided with a layer of thin and transparent plastic film, so that the surface is smoother and brighter, the glossiness and the fastness of the printed matter are improved, the service life of the printed matter is prolonged, and meanwhile, the plastic film plays a role in protection such as moisture resistance, water resistance, pollution resistance, wear resistance, folding resistance, chemical corrosion resistance and the like.

The conventional common film coating process flow is generally as follows: the plastic film and the paper are pressed into a whole by applying an adhesive on the plastic film in advance, then attaching the plastic film to the paper and applying pressure to the plastic film and the paper by using a pressing device. The existing laminating device generally utilizes a plurality of press rollers to press the plastic film and the paper so as to laminate the plastic film and the paper. Although the paper can be effectively pressed by adopting the mode, due to the different specifications of the pressed paper, the plastic film and the like, the height of the pressing roller needs to be properly adjusted, so that the pressing roller can apply proper pressure to the paper and the plastic film, the pressure can ensure that the paper and the plastic film cannot be conveyed forwards due to the fact that the plastic film and the paper are laminated, but the position of the pressing roller used in the existing device is not easy to adjust, and the specific operation is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model provides a plastic film and compression fittings for paper pressfitting to solve the difficult problem of adjusting in current compression fittings's compression roller position.

In order to achieve the above purpose, the utility model discloses a scheme does: the laminating device for laminating the plastic film and the paper comprises a film feeding unit, a paper feeding unit, a laminating unit and a winding unit, wherein the film feeding unit, the paper feeding unit, the laminating unit and the winding unit are sequentially arranged along the transmission direction of the plastic film; the pressing unit comprises a supporting mechanism and a pressing mechanism positioned above the supporting mechanism, and the pressing mechanism comprises a telescopic part and a pressing roller rotatably connected to the lower part of the telescopic part; the supporting mechanism comprises a supporting platform and a supporting roller which is rotatably connected to the supporting platform, and the supporting roller and the press-fit roller are arranged oppositely.

The working principle and the beneficial effects of the scheme are as follows: when paper and plastic films of different specifications and models need to be pressed, the paper and the plastic films penetrate between the supporting roller and the pressing roller, and then the height of the pressing roller is adjusted through the telescopic part, so that the pressing roller can apply pressure of proper magnitude to the paper and the plastic films, and the paper and the plastic films cannot be too large or too small. After the adjustment is finished, the film feeding unit, the paper feeding unit and the winding unit start to work, the film feeding unit outputs plastic films, the paper feeding unit outputs paper, the paper and the plastic films are pressed into a whole under the combined action of the pressing roller and the supporting roller, and the winding unit winds the pressed plastic films and the paper. In this scheme, can be easy adjust the position of pressfitting roller through adjusting the pars contractilis, ensure that the pressfitting roller can exert the pressure of suitable size to paper, plastic film, easy operation is convenient.

Optionally, the telescopic part comprises a limiting sleeve and an inner plunger slidably connected to the lower part of the limiting sleeve, and an adjusting part for adjusting the extension length of the plunger is arranged on the limiting sleeve; the pressing roller is rotatably connected to the lower part of the plunger. When the position of the pressing roller needs to be adjusted, the adjusting part is adjusted to control the extending length of the plunger.

Optionally, the adjusting part comprises a piston and an adjusting piece, and the piston is slidably connected in the limiting sleeve and positioned above the plunger; the adjusting piece comprises a cam which is always kept on the surface of the piston and a rotating shaft which is rotatably connected to the limiting sleeve, and one end of the rotating shaft is fixed on the cam. When the position of the pressing roller is adjusted, the rotating shaft is rotated, the cam on the rotating shaft also rotates to drive the piston to move, and the plunger also moves under the action of the piston, so that the pressing roller on the plunger is driven to move together, and the effect of adjusting the position of the pressing roller is achieved.

Optionally, a closed dovetail groove is formed in the circumferential surface of the cam, and a connecting rod which is clamped in the dovetail groove and can rotate along the dovetail groove is welded on the piston. Through the arrangement of the connecting rod and the dovetail groove, the cam can be always in contact with the surface of the piston, and the cam can effectively transmit force to the piston.

Optionally, the limiting sleeve is provided with an installation frame, and the installation frame is rotatably connected with a driving shaft and is provided with a limiting part capable of limiting the rotation of the driving shaft; the driving shaft is provided with a driving gear, the rotating shaft is provided with a driven gear meshed with the driving gear, and the transmission ratio of the driving gear to the driven gear is 2-5. When the position of the pressing roller needs to be adjusted, the driving shaft is rotated, and the rotating shaft and the cam on the rotating shaft also rotate through the transmission of the driving gear and the driven gear. The cam rotates to drive the piston to move, and the plunger also moves under the action of the piston, so that the pressing roller on the plunger is driven to move together, and the effect of adjusting the position of the pressing roller is achieved. In the scheme, the rotating shaft is not directly rotated to control the cam to rotate, so that the pressing roller is easily moved excessively due to overlarge rotation amount. This scheme sets up driving gear, driven gear, through control drive ratio, makes the driving gear rotate the certain angle of round driven gear just rotation, makes the pivot can realize the fine setting, comparatively accurate control cam's rotation volume to the amount of movement of accurate control pressfitting roller.

Optionally, the limiting portion includes at least one screw rod in threaded connection with the mounting frame, and an end of the screw rod can abut against the driving shaft. The end of the screw rod is tightly propped against the driving shaft by screwing the screw rod, and the driving shaft can be prevented from rotating randomly by increasing the friction force borne by the driving shaft.

Optionally, the lower part of the plunger is rotatably connected with a plurality of pressing rollers, the rotating centers of the pressing rollers are connected with connecting shafts, the connecting shafts are respectively provided with a chain wheel, and the chain wheel is sleeved with a same conveying chain; the limiting sleeve is provided with a motor used for driving one of the connecting shafts to rotate. When the pressing operation is needed, the motor is started, and all the pressing rollers synchronously rotate under the action of the chain wheel and the conveying chain. The rotation direction of control motor makes the rotation direction of pressfitting roller opposite with the direction of delivery of paper, sets up like this, enables the effect of pressfitting better, helps leveling the fold on paper, the plastic film moreover, guarantees the quality of pressfitting.

Optionally, the telescopic part comprises a hydraulic cylinder, a piston rod of the hydraulic cylinder is provided with a mounting seat, and the pressing roller is rotatably connected to the mounting seat. The position of the pressing roller can be quickly adjusted through the hydraulic cylinder, so that the pressing roller can apply appropriate acting force to the plastic film and the paper, and the operation is simple and convenient.

Optionally, the winding unit includes a winding roller and a winding motor for driving the winding roller to rotate. When the paper and the plastic film which are pressed into a whole need to be rolled, the rolling motor is started, and the rolling roller rolls and presses the paper and the plastic film into a whole under the action of the rolling motor.

Optionally, the film feeding unit comprises a film placing roller and a first pressing roller for adjusting the position of the plastic film; the paper feeding unit comprises a paper discharge roller and a first pressing roller for adjusting the position of the paper. When the device works, the rolling unit rolls the paper and the plastic film which are pressed into a whole, the plastic film on the film roller and the paper on the paper roller are pulled out at the moment, and the first pressing roller and the second pressing roller enable the paper and the plastic film to be attached together, so that the subsequent paper and the plastic film are pressed conveniently.

Drawings

Fig. 1 is a cross-sectional view of a pressing device for pressing plastic films and paper according to an embodiment of the present invention;

FIG. 2 is a full cross-sectional view of the plunger of FIG. 1;

fig. 3 is a half sectional view of a pressing device for pressing plastic film and paper according to a second embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the film releasing roller comprises a film releasing roller 10, a first pressing roller 11, a paper releasing roller 20, a second pressing roller 21, a limiting sleeve 30, a piston 31, a connecting rod 311, a plunger 32, a pressing roller 321, a cam 40, a dovetail groove 41, a rotating shaft 42, a driven gear 43, an installing frame 50, a driving shaft 51, a screw 52, a driving gear 53, a winding roller 60, a hydraulic cylinder 70, an installing seat 71, a connecting shaft 80, a chain wheel 81, a supporting table 90 and a supporting roller 91.

Example one

The embodiment is basically as shown in fig. 1 and fig. 2: the laminating device for laminating the plastic film and the paper comprises a rack, a film feeding unit, a paper feeding unit, a laminating unit and a rolling unit, wherein the film feeding unit, the paper feeding unit, the laminating unit and the rolling unit are sequentially arranged in the transmission direction (from left to right) of the plastic film. The winding unit comprises a winding roller 60 and a winding motor fixedly mounted on the rack, the winding roller 60 is rotatably connected to the rack, and an output shaft of the winding motor is connected to the rotating center of the winding roller 60. The winding unit can also be additionally provided with a speed reducer, and the output speed of the winding motor is controlled by the speed reducer. The film feeding unit comprises a film placing roller 10 and a first pressing roller 11, the paper feeding unit comprises a paper placing roller 20 and a second pressing roller 21, the film placing roller 10, the first pressing roller 11, the paper placing roller 20 and the second pressing roller 21 are all connected to the rack in a rotating mode, the first pressing roller 11 and the second pressing roller 21 are arranged oppositely, the first pressing roller 11 is used for adjusting the position of a plastic film, and the second pressing roller 21 is used for adjusting the position of paper.

The pressing unit comprises a supporting mechanism and a pressing mechanism located above the supporting mechanism, the supporting mechanism comprises a supporting table 90 and a plurality of supporting rollers 91 connected to the supporting table 90 in a rotating mode, and the supporting table 90 is fixedly installed on the rack. The pressing mechanism comprises a telescopic part and a plurality of pressing rollers 321, the telescopic part comprises a limiting sleeve 30 fixed on the rack and an inner plunger 32 connected to the lower part of the limiting sleeve 30 in a sliding and sealing mode, the pressing rollers 321 are connected to the lower part of the plunger 32 in a rotating mode, the number of the supporting rollers 91 is the same as that of the pressing rollers 321, and the supporting rollers 91 are arranged opposite to the pressing rollers 321. The rotation center of the pressing roller 321 is connected with a connecting shaft 80, the connecting shaft 80 is fixed with a chain wheel 81, the chain wheel 81 is sleeved with a same transmission chain, and the transmission chain can drive the chain wheel 81 to rotate. The limiting sleeve 30 is fixedly provided with a motor through a support, an output shaft of the motor is connected with one of the connecting shafts 80, and the motor is started to enable the connecting shaft 80 to rotate.

The stop collar 30 is further provided with an adjusting part for adjusting the extension length of the plunger 32, the adjusting part comprises a piston 31 and an adjusting piece, the piston 31 is connected in the stop collar 30 in a sliding and sealing mode and is located above the plunger 32, and hydraulic oil is filled in the stop collar 30 between the piston 31 and the plunger 32. The adjusting piece comprises a cam 40 and a rotating shaft 42, the cam 40 is positioned above the piston 31, a closed dovetail groove 41 is formed in the circumferential surface of the cam 40, a connecting rod 311 which is clamped in the dovetail groove 41 and can rotate along the dovetail groove 41 is welded on the piston 31, and the cam 40 can be always kept in contact with the upper surface of the piston 31 through the arrangement of the connecting rod 311 and the dovetail groove 41. The rotating shaft 42 is rotatably connected to the side wall of the position limiting sleeve 30, one end of the rotating shaft 42 is fixed on the cam 40, and the other end of the rotating shaft 42 penetrates through the position limiting sleeve 30 and is positioned outside the position limiting sleeve 30. The welding has mounting bracket 50 on the lateral wall of stop collar 30, rotates on the mounting bracket 50 to be connected with drive shaft 51 and be equipped with the spacing portion that is used for restricting drive shaft 51 pivoted. The driving shaft 51 is provided with a driving gear 53, the rotating shaft 42 is provided with a driven gear 43 engaged with the driving gear, the driven gear 43 is positioned outside the limiting sleeve 30, and the transmission ratio of the driving gear 53 to the driven gear 43 is 2-5, in the embodiment, 2.5. The limiting part comprises at least one screw 52 which is in threaded connection with the mounting frame 50, in the embodiment, 3 screws 52 are arranged, and the end part of each screw 52 can be abutted against the surface of the driving shaft 51. By screwing the screw 52, the end of the screw 52 is tightly pressed against the driving shaft 51, and the driving shaft 51 is prevented from being rotated freely by increasing the friction force applied to the driving shaft 51.

When paper and plastic films with different specifications and models need to be pressed, the paper and the plastic films penetrate through the supporting roller 91 and the pressing roller 321, then the height of the pressing roller 321 is adjusted through the telescopic part, specifically, when the position of the pressing roller 321 is adjusted, the driving shaft 51 is rotated, and the rotating shaft 42 and the cam 40 on the rotating shaft 42 are also rotated through the transmission of the driving gear 53 and the driven gear 43. The cam 40 rotates to drive the piston 31 to move, and under the action of the piston 31, the plunger 32 also moves, so that the pressing roller 321 on the plunger 32 is driven to move together, and the pressing roller 321 can apply pressure with proper magnitude on paper and plastic films, and cannot be too large or too small. After the adjustment is completed, the film feeding unit, the paper feeding unit and the winding unit start to work, the film feeding unit outputs plastic films, the paper feeding unit outputs paper, the paper and the plastic films are pressed into a whole under the combined action of the pressing roller 321 and the supporting roller 91, and the winding unit winds the pressed plastic films and the paper.

Example two

The present embodiment is different from the first embodiment in that: the telescopic part in this embodiment is different from the first embodiment, as shown in fig. 3, in this embodiment, the telescopic part includes a hydraulic cylinder 70 fixedly mounted on the frame, a mounting seat 71 is connected to a rod of the piston 31 of the hydraulic cylinder 70, and a plurality of stitching rollers 321 are rotatably connected to a lower portion of the mounting seat 71.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be pointed out that to those skilled in the art, without departing from the structure of the present invention, a plurality of modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the present invention.

Claims

1. The laminating device for laminating the plastic film and the paper comprises a film feeding unit, a paper feeding unit, a laminating unit and a winding unit, wherein the film feeding unit, the paper feeding unit, the laminating unit and the winding unit are sequentially arranged along the transmission direction of the plastic film; the method is characterized in that: the pressing unit comprises a supporting mechanism and a pressing mechanism positioned above the supporting mechanism, and the pressing mechanism comprises a telescopic part and a pressing roller rotatably connected to the lower part of the telescopic part; the supporting mechanism comprises a supporting platform and a supporting roller which is rotatably connected to the supporting platform, and the supporting roller and the press-fit roller are arranged oppositely.

2. A laminating arrangement for laminating plastic films to paper according to claim 1, characterised in that: the telescopic part comprises a limiting sleeve and an inner plunger piston which is connected to the lower part of the limiting sleeve in a sliding manner, and the limiting sleeve is provided with an adjusting part for adjusting the extension length of the plunger piston; the pressing roller is rotatably connected to the lower part of the plunger.

3. A laminating arrangement for laminating plastic films to paper according to claim 2, characterised in that: the adjusting part comprises a piston and an adjusting piece, and the piston is connected in the limiting sleeve in a sliding manner and is positioned above the plunger; the adjusting piece comprises a cam which is always kept on the surface of the piston and a rotating shaft which is rotatably connected to the limiting sleeve, and one end of the rotating shaft is fixed on the cam.

4. A laminating arrangement for laminating plastic films to paper according to claim 3, characterised in that: the circumferential surface of the cam is provided with a closed dovetail groove, and the piston is welded with a connecting rod which is clamped in the dovetail groove and can rotate along the dovetail groove.

5. A laminating arrangement for laminating plastic films to paper according to claim 4, characterised in that: the limiting sleeve is provided with an installation frame, and the installation frame is rotatably connected with a driving shaft and is provided with a limiting part capable of limiting the rotation of the driving shaft; the driving shaft is provided with a driving gear, the rotating shaft is provided with a driven gear meshed with the driving gear, and the transmission ratio of the driving gear to the driven gear is 2-5.

6. A laminating arrangement for laminating plastic films to paper according to claim 5, characterised in that: the limiting part comprises at least one screw rod which is in threaded connection with the mounting rack, and the end part of the screw rod can be abutted to the driving shaft.

7. A laminating arrangement for laminating plastic films to paper according to claim 6, characterised in that: the lower part of the plunger is rotatably connected with a plurality of pressing rollers, the rotating center of each pressing roller is connected with a connecting shaft, each connecting shaft is provided with a chain wheel, and the chain wheels are sleeved with a same conveying chain; the limiting sleeve is provided with a motor used for driving one of the connecting shafts to rotate.

8. A laminating arrangement for laminating plastic films to paper according to claim 1, characterised in that: the telescopic part comprises a hydraulic cylinder, a mounting seat is arranged on a piston rod of the hydraulic cylinder, and the press-fit roller is rotatably connected to the mounting seat.

9. A laminating arrangement for laminating plastic films to paper according to claim 1, characterised in that: the winding unit comprises a winding roller and a winding motor for driving the winding roller to rotate.

10. A laminating arrangement for laminating plastic films to paper according to claim 9, characterised in that: the film feeding unit comprises a film placing roller and a first pressing roller for adjusting the position of the plastic film; the paper feeding unit comprises a paper discharge roller and a first pressing roller for adjusting the position of the paper.