CN111941687A

CN111941687A - Recycling method of renewable environment-friendly paper-plastic composite bag

Info

Publication number: CN111941687A
Application number: CN202010807079.4A
Authority: CN
Inventors: 陈蓓蓓; 谷珍妮
Original assignee: Individual
Current assignee: Anhui Juyi New Material Technology Co.,Ltd.
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-11-17
Anticipated expiration: 2040-08-12
Also published as: CN111941687B

Abstract

The invention belongs to the technical field of paper-plastic composite bags, and particularly relates to a recycling treatment method of a renewable environment-friendly paper-plastic composite bag, which is completed by matching a recycling treatment machine of the renewable environment-friendly paper-plastic composite bag, and comprises the following steps: step one, fixing the paper-plastic composite bag through a clamping mechanism; step two, soaking the paper-plastic composite bag: putting the paper-plastic composite bag into a water tank to soften kraft paper; step three, removing kraft paper: cleaning the soaked kraft paper through a brush roller; step four, cleaning the plastic layer: and (5) immersing the paper-plastic composite bag into water again, and cleaning away residual kraft paper. The invention improves the removal effect of the kraft paper, and the surface of the plastic layer is not damaged in the kraft paper cleaning process.

Description

Recycling method of renewable environment-friendly paper-plastic composite bag

Technical Field

The invention belongs to the technical field of paper-plastic composite bags, and particularly relates to a recycling method of a renewable environment-friendly paper-plastic composite bag.

Background

The renewable environment-friendly paper-plastic composite bag is formed by compounding plastic and kraft paper, wherein the plastic layer is usually flat-silk woven cloth taking polypropylene or polyethylene as a base material, and the kraft paper is refined composite special kraft paper and has the characteristics of high strength and good waterproofness. The renewable environment-friendly paper-plastic composite bag is one of the most popular packaging materials at present, and is widely applied to the industries of plastic raw materials, cement, feed, chemical industry, fertilizer and the like. The renewable environment-friendly paper-plastic composite bag needs to be recycled after being used for a period of time, and the plastic layer of the paper-plastic composite bag needs to be separated from kraft paper during recycling. At present, when the plastic layer of the renewable environment-friendly paper-plastic composite bag is separated from kraft paper, water needs to be sprayed on the kraft paper, and the kraft paper is scraped from the plastic layer by a scraper after the kraft paper absorbs water and is softened. In the actual production process, the above mode is not only low in efficiency, but also has the following problems: (1) the scraper is difficult to scrape the kraft paper on the plastic layer clean, and the kraft paper is easy to remain, so that the recycling of the plastic layer is influenced; (2) when the scraper scrapes the kraft paper, the surface of the plastic layer is easily scratched, and the recycling of the plastic layer is also adversely affected.

Disclosure of Invention

Technical problem to be solved

The invention provides a recycling treatment method of a renewable environment-friendly paper-plastic composite bag, aiming at solving the following problems existing when a scraper is used for separating a plastic layer of the paper-plastic composite bag from kraft paper at present: (1) the scraper is difficult to scrape the kraft paper on the plastic layer clean, and the kraft paper is easy to remain, so that the recycling of the plastic layer is influenced; (2) when the scraper scrapes the kraft paper, the surface of the plastic layer is easily scratched, and the recycling of the plastic layer is also adversely affected.

(II) technical scheme

In order to solve the technical problems, the invention adopts the following technical scheme:

the recycling treatment method of the renewable environment-friendly paper-plastic composite bag is completed by matching a renewable environment-friendly paper-plastic composite bag recycling treatment machine, wherein the renewable environment-friendly paper-plastic composite bag recycling treatment machine comprises a horizontal bottom plate, a water tank with a rectangular cross section is fixedly arranged on the upper surface of the bottom plate, and an opening is formed in the top surface of the water tank. Two clamping mechanisms are symmetrically arranged on the left and right of the upper surface of the bottom plate. The upper surface of the bottom plate is provided with a cleaning mechanism.

The clamping mechanism comprises an electric sliding block, an air cylinder, a top plate, a support, a pressure bearing strip, a screw rod, a guide rod, a pressure applying strip, a first spring and a guide wheel. The quantity of electronic slider is two, and two electronic sliders symmetrical arrangement are in the front and back both sides of water tank, and electronic slider is along left and right direction and bottom plate sliding fit. The electric sliding block is vertically and fixedly provided with air cylinders, and the top ends of the piston rods of the two air cylinders are horizontally and fixedly provided with top plates arranged along the front-back direction. The support of roof lower surface fixedly connected with L style of calligraphy, the bearing strip of arranging along the fore-and-aft direction is installed to the support tip, bearing strip and support normal running fit. The front end and the rear end of the upper surface of the bearing strip are respectively and vertically provided with a screw rod and a guide rod. The guide rod is matched with a pressure applying strip parallel to the pressure bearing strip in a sliding way. The screw rod penetrates through the pressure applying strip and is in rotating fit with the pressure applying strip through threads. A first spring is arranged between the top surface of the pressure applying strip and the bottom surface of the top plate. The guide wheels are rotatably arranged at the front end and the rear end of the lower surface of the bearing strip, and guide plates are vertically and fixedly arranged on the water tank bottom plate along the left-right direction. The top surface of the guide plate is matched with the guide wheel in a rolling way. The edges of the left end and the right end of the paper-plastic composite bag are plugged between the pressure bearing strips and the pressure applying strips, and the screw rod is rotated to drive the pressure applying strips to move downwards until the pressure applying strips press the edges of the paper-plastic composite bag against the pressure bearing strips. The top plate, the support, the bearing strip, the lead screw, the guide rod, the pressing strip and the paper-plastic composite bag are driven by the cylinder to integrally move downwards until the paper-plastic composite bag is completely immersed in water in the water tank. Drive cylinder roof, support, bearing strip, lead screw, guide bar, the strip of exerting pressure and the whole periodic phase in opposite directions and the reverse movement of compound bag is moulded to paper through electronic slider to make the compound bag of paper moulding periodic phase crooked and tensioning, mould the compound bag to paper and play the effect of kneading, make moisture can fully permeate the space of kraft paper, play soft effect to the kraft paper. Meanwhile, through the cooperation of leading wheel and deflector to and the elasticity effect of first spring, drive the bearing strip and apply pressure strip both ends and reciprocate periodically, thereby make four angles of compound bag production of paper moulding reciprocate periodically, increase the fold on the compound bag is moulded to paper, make moisture can fully permeate in the space of kraft paper, further play soft effect to the kraft paper.

The cleaning mechanism comprises a mounting bar, a vertical rod, a guide rail, a mounting block, a limiting sleeve, a mounting plate, a brush roller, a first motor, a support plate, a bidirectional screw rod and a second motor. The quantity of mounting bar is two, and two mounting bar symmetries are installed on the bottom plate of both sides around the water tank, and the mounting bar is arranged and both ends fixed mounting has vertical pole about the mounting bar along left right direction. A guide rail is horizontally and fixedly arranged between the two vertical rods which are symmetrical in the front-back direction. The front and back symmetrical sliding fit on the guide rail is provided with two mounting blocks, the bottom of each mounting block is vertically and fixedly provided with a limiting sleeve penetrating through the guide rail, and the mounting plates are vertically and slidably matched in the limiting sleeves. And brush rollers which are arranged along the left and right direction are horizontally and rotatably arranged between the two mounting plates which are symmetrical left and right. The mounting plate close to the right side is fixedly provided with a first motor, and the output end of the first motor is fixedly connected with the brush roller. The front end and the rear end of the guide rail are symmetrically and fixedly provided with supporting plates, and a bidirectional screw rod which penetrates through the two mounting blocks and is in threaded rotation fit with the mounting blocks is horizontally and rotatably arranged between the two supporting plates which are symmetrical front and rear. And a second motor is fixedly arranged on the supporting plate close to the rear part, and the output end of the second motor is fixedly connected with the bidirectional screw rod. The soaked paper-plastic composite bag is driven by the clamping mechanism to move upwards until the paper-plastic composite bag is attached to the brush roller. The first motor drives the brush roller to rotate, so that the softened kraft paper is cleaned. The two-way screw rod is driven to rotate through the second motor, so that the two mounting blocks are driven to move from the middle to the front end and the rear end, and the mounting blocks drive the limiting sleeve, the mounting plate and the brush roller to move from the middle to the front end and the rear end. The brush roller cleans the softened kraft paper from the plastic layer and pushes the cleaned kraft paper fragments to move from the middle to the front and back ends until the kraft paper fragments automatically fall into the water tank after being separated from the plastic layer. The two-way screw rod is driven to rotate reversely through the second motor, so that the two mounting blocks are driven to move towards the middle from the front end and the rear end, the mounting blocks drive the limiting sleeves, the mounting plate and the brush roller to move towards the middle from the front end and the rear end, and the brush roller returns to the initial position.

The recycling treatment method of the renewable environment-friendly paper-plastic composite bag comprises the following steps:

step one, fixing the paper-plastic composite bag: and (3) enabling kraft paper of the paper-plastic composite bag to face upwards, inserting the edges of the left end and the right end of the paper-plastic composite bag between the pressure bearing strip and the pressure applying strip, and clamping the edges of the left end and the right end of the paper-plastic composite bag.

Step two, soaking the paper-plastic composite bag: after water is injected into the water tank, the paper-plastic composite bag is driven by the cylinder to descend and be immersed in water. The left end and the right end of the paper-plastic composite bag are driven by the electric sliding block to periodically move in opposite directions, so that the paper-plastic composite bag is periodically bent and tensioned. In the process, the paper-plastic composite bag is driven to twist through the matching of the guide wheel and the guide plate, so that wrinkles are formed on the surface of the paper-plastic composite bag.

Step three, removing kraft paper: the paper-plastic composite bag is driven by the cylinder to rise away from the water surface until the kraft paper is pressed against the brush roller. The first motor drives the brush rollers to rotate, and the second motor drives the two brush rollers which are symmetrical front and back to move from the middle to the front and back ends, so that the soaked kraft paper is cleaned.

Step four, cleaning the plastic layer: and D, putting the paper-plastic composite bag without the kraft paper into water according to the method in the second step, cleaning the residual kraft paper on the plastic layer through water flow, moving the cleaned plastic layer out of the water surface, and finally detaching the edges of the left end and the right end of the plastic layer from the clamping mechanism.

In a preferred embodiment of the present invention, the mounting bar is an electric skateboard, and is slidably mounted on the upper surface of the base plate in the left-right direction. The brush roller cleans the kraft paper in-process, drives the brush roller through the mounting bar along controlling direction round trip movement to brush and sweep the in-process and brush about going on simultaneously around making the brush roller to the kraft paper, improved the kraft paper clearance effect.

According to a preferable technical scheme of the invention, the rubber strip parallel to the pressure-bearing strip is fixedly attached to the upper surface of the pressure-bearing strip so as to increase the friction force between the pressure-bearing strip and the paper-plastic composite bag and ensure that the whole paper-plastic composite bag cannot fall off from the clamping mechanism in the process of cleaning kraft paper by the cleaning mechanism.

As a preferable technical scheme of the invention, the top surfaces of the guide plates positioned at the left front part and the right rear part in the water tank are of a structure with high left and right ends and low middle. The top surfaces of the guide plates positioned at the left rear part and the right front part in the water tank are of structures with lower left ends and lower right ends and higher middle. Make two fixture in opposite directions or the reverse motion in-process, great difference in height can appear in two adjacent corners of compound bag is moulded to paper to make the whole distortion that appears of compound bag is moulded to paper, further make moisture can stretch into the kraft paper fast fully in, guarantee that the kraft paper is softened.

As a preferred technical scheme of the invention, the positions of the left inner side wall and the right inner side wall of the water tank, which correspond to the supports, are vertically and fixedly provided with the magnet strips. The support is internally provided with a sliding chute arranged along the left-right direction. And a rotating column which is in running fit with the bracket is fixedly arranged on the pressure-bearing strip. The end face of the rotating column is provided with a slot corresponding to the sliding groove. The square block with iron is in sliding fit in the sliding groove. A second spring is fixedly arranged between the square block and the end face of the sliding groove. Support, pressure-bearing strip and paper mould compound bag decline in-process, the square piece is adsorbed to the magnet strip, and the square piece slides along the spout and breaks away from the slot on the rotation post terminal surface to compress the second spring. After the paper-plastic composite bag is immersed in water, the rotating column and the pressure-bearing strip can rotate freely. Support, the compound bag decline in-process is moulded to bearing strip and paper, square piece breaks away from behind the adsorption of magnet strip, slides along the spout under the elastic force effect of second spring and resumes to the normal position, and insert the slot on the rotation post terminal surface, plays limiting displacement to the rotation post to avoided cleaning the mechanism and cleaned the in-process bearing strip and paper to the kraft paper and moulded compound bag and produced the rotation, ensured that paper is moulded compound bag and is in the horizontality, improved the effect of cleaning.

As a preferred technical scheme of the invention, a vertical limiting groove is formed in the limiting sleeve, and the mounting plate is in sliding fit in the limiting groove. The mushroom nail is fixedly installed at the top of the installing plate, and a clamping groove matched with the mushroom nail is formed in the top surface of the limiting groove. And a third spring is vertically and fixedly arranged between the top surface of the limiting groove and the mounting plate. An oil groove communicated with the clamping groove is formed in the limiting sleeve, an ejector rod is arranged at one end of the oil groove in a vertical sliding fit mode, and a fourth spring is vertically and fixedly installed between the ejector rod and the inner wall of the oil groove. The oil groove other end level sliding fit has the sealing rod, and sealing rod tip fixed mounting has first magnet piece. And the front and the back of the middle part of the guide rail are symmetrically and fixedly provided with second magnet blocks corresponding to the first magnet blocks. The position of the vertical rod corresponding to the mounting plate is fixedly provided with a wedge-shaped block. The brush roller cleans the in-process to the kraft paper to both ends removal around from the centre, and the wedge lifts up mounting panel and brush roller upwards, and the mounting panel compresses the third spring, and the mushroom nail card is gone into in the draw-in groove to spacing the height that breaks away from the kraft paper surface with the brush roller. The brush roller moves the in-process from front and back both ends to the centre, and the brush roller is in the separation state with the kraft paper all the time to avoid sweeping the kraft paper back to middle zone. After the limiting sleeve reaches the middle position, mutual repulsion force is generated between the first magnet block and the second magnet block, the first magnet block pushes the sealing rod to slide along the oil groove, the sealing rod extrudes hydraulic oil in the oil groove, and the hydraulic oil pushes the ejector rod to enter the clamping groove, so that the mushroom nails are ejected out of the clamping groove. The mounting panel breaks away from the limiting displacement of draw-in groove to drive the brush roller downstream under the elastic force effect of third spring, support again and press the kraft paper surface until the brush roller, the brush roller cleans the kraft paper once more to the front and back both ends removal in the centre.

(III) advantageous effects

The invention has at least the following beneficial effects:

(1) the invention solves the following problems existing in the prior art when a scraper is used for separating a plastic layer of a paper-plastic composite bag from kraft paper: the scraper is difficult to scrape the kraft paper on the plastic layer clean, and the kraft paper is easy to remain, so that the recycling of the plastic layer is influenced; when the scraper scrapes the kraft paper, the surface of the plastic layer is easily scratched, and the recycling of the plastic layer is also adversely affected.

(2) Before the plastic layer of the paper-plastic composite bag is separated from the kraft paper, the whole paper-plastic composite bag is immersed in water, and the paper-plastic composite bag is periodically bent and tensioned to achieve the kneading effect, so that water can fully permeate into gaps of the kraft paper and soften the kraft paper; and cleaning the softened kraft paper by using the brush roller, and finally soaking the paper-plastic composite bag into water to clean the residual kraft paper, so that the removal effect of the kraft paper is improved.

(3) Before the cleaning of the kraft paper by the brush roller, the whole paper-plastic composite bag is soaked in water to soften the kraft paper, the height of the kraft paper is adjusted before cleaning, so that the extrusion force between the kraft paper and the cleaning roller is in a lower state, the kraft paper can be removed by using smaller cleaning force during cleaning, and the situation that the cleaning roller scratches the surface of the plastic layer in the cleaning process is avoided.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a step diagram of a recycling method of a recyclable environment-friendly paper-plastic composite bag according to an embodiment of the present invention;

FIG. 2 is a schematic view of a first three-dimensional structure of a recycling machine for recyclable environment-friendly paper-plastic composite bags according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a second three-dimensional structure of a recycling machine for recyclable environment-friendly paper-plastic composite bags according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of a recycling machine A for recyclable environment-friendly paper-plastic composite bags according to an embodiment of the present invention;

FIG. 5 is a schematic view showing the internal structure of the connecting portion of the support and the pressure-bearing strip of the holding mechanism in the embodiment of the present invention;

FIG. 6 is a schematic view showing the internal structure of the connection part of the limiting sleeve and the mounting plate of the cleaning mechanism in the embodiment of the present invention.

In the figure: 1-bottom plate, 2-water tank, 3-clamping mechanism, 31-electric sliding block, 32-air cylinder, 33-top plate, 34-support, 35-bearing strip, 36-lead screw, 37-guide rod, 38-pressing strip, 39-first spring, 310-guide wheel, 311-rubber strip, 312-magnet strip, 313-chute, 314-rotating column, 315-square block, 316-second spring, 4-cleaning mechanism, 41-mounting strip, 42-vertical rod, 43-guide rail, 44-mounting block, 45-limit sleeve, 46-mounting plate, 47-brush roller, 48-first motor, 49-support plate, 410-bidirectional lead screw, 411-second motor, 412-limit groove, 413-mushroom nail, 414-clamping groove, 415-third spring, 416-oil groove, 417-top rod, 418-fourth spring, 419-sealing rod, 420-first magnet block, 421-second magnet block, 422-wedge block and 5-guide plate.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 2 to fig. 6, the embodiment provides a recycling machine for renewable environment-friendly paper-plastic composite bags, which includes a horizontal bottom plate 1, a water tank 2 with a rectangular cross section is fixedly mounted on the upper surface of the bottom plate 1, and an opening is formed on the top surface of the water tank 2. Two clamping mechanisms 3 are symmetrically arranged on the left and right of the upper surface of the bottom plate 1. The upper surface of the bottom plate 1 is provided with a cleaning mechanism 4.

The clamping mechanism 3 comprises an electric slide block 31, an air cylinder 32, a top plate 33, a bracket 34, a pressure bearing strip 35, a lead screw 36, a guide rod 37, a pressing strip 38, a first spring 39 and a guide wheel 310. The number of the electric sliding blocks 31 is two, the two electric sliding blocks 31 are symmetrically arranged on the front side and the rear side of the water tank 2, and the electric sliding blocks 31 are in sliding fit with the bottom plate 1 along the left-right direction. The electric sliding block 31 is vertically and fixedly provided with air cylinders 32, and the top ends of the piston rods of the two air cylinders 32 are horizontally and fixedly provided with top plates 33 arranged along the front-back direction. The lower surface of the top plate 33 is fixedly connected with an L-shaped support 34, the end part of the support 34 is provided with a bearing strip 35 which is arranged along the front-back direction, and the bearing strip 35 is in running fit with the support 34. The upper surface of the pressure-bearing strip 35 is fixedly attached with the rubber strip 311 parallel to the pressure-bearing strip to increase the friction between the pressure-bearing strip 35 and the paper-plastic composite bag, so that the cleaning mechanism 4 is ensured to prevent the paper-plastic composite bag from falling off from the clamping mechanism 3 in the kraft paper cleaning process. The front end and the rear end of the upper surface of the pressure-bearing strip 35 are respectively and vertically provided with a screw rod 36 and a guide rod 37. A pressing bar 38 parallel to the bearing bar 35 is slidably fitted on the guide bar 37. The lead screw 36 extends through the pressure bar 38 and is threadedly and rotatably engaged with the pressure bar 38. A first spring 39 is mounted between the top surface of the pressing bar 38 and the bottom surface of the top plate 33. The front end and the rear end of the lower surface of the pressure bearing strip 35 are rotatably provided with guide wheels 310, and a guide plate 5 is vertically and fixedly arranged on the bottom plate of the water tank 2 along the left-right direction. The top surface of the guide plate 5 is in rolling engagement with the guide wheel 310. The top surfaces of the guide plates 5 positioned at the left front part and the right rear part in the water tank 2 are of structures with high left and right ends and low middle. The top surfaces of the guide plates 5 positioned at the left rear part and the right front part in the water tank 2 are of structures with lower left ends and lower right ends and higher middle. Make two fixture 3 in opposite directions or the reverse motion in-process, great difference in height can appear in two adjacent corners of compound bag is moulded to paper to make the whole distortion that appears of compound bag is moulded to paper, further make moisture can stretch into the kraft paper fast fully in, guarantee that the kraft paper is softened. The edges of the left end and the right end of the paper-plastic composite bag are plugged between the pressure bearing strip 35 and the pressure applying strip 38, and the screw rod 36 is rotated to drive the pressure applying strip 38 to move downwards until the pressure applying strip 38 presses the edges of the paper-plastic composite bag on the pressure bearing strip 35. The air cylinder 32 drives the top plate 33, the bracket 34, the pressure-bearing strip 35, the lead screw 36, the guide rod 37, the pressure-applying strip 38 and the paper-plastic composite bag to integrally move downwards until the paper-plastic composite bag is completely immersed in the water tank 2. The electric sliding block 31 drives the top plate 33 of the air cylinder 32, the support 34, the pressure-bearing strip 35, the screw 36, the guide rod 37, the pressure-applying strip 38 and the paper-plastic composite bag to integrally and periodically move in the opposite directions, so that the paper-plastic composite bag is periodically bent and tensioned, the paper-plastic composite bag is kneaded, moisture can fully permeate into the gap of kraft paper, and the kraft paper is softened. Meanwhile, through the cooperation of the guide wheel 310 and the guide plate 5 and the elastic force action of the first spring 39, the bearing strip 35 and the two ends of the pressing strip 38 are driven to move up and down periodically, so that four corners of the paper-plastic composite bag move up and down periodically, wrinkles on the paper-plastic composite bag are increased, moisture can permeate into the gap of kraft paper sufficiently, and the kraft paper is further softened.

The cleaning mechanism 4 comprises a mounting bar 41, a vertical rod 42, a guide rail 43, a mounting block 44, a limiting sleeve 45, a mounting plate 46, a brush roller 47, a first motor 48, a supporting plate 49, a bidirectional screw 410 and a second motor 411. The quantity of mounting bar 41 is two, and two mounting bars 41 symmetry are installed on the bottom plate 1 of water tank 2 front and back both sides, and mounting bar 41 is the electric skateboard, and along left right direction slidable mounting at bottom plate 1 upper surface. Brush roller 47 cleans the in-process to the kraft paper, drives brush roller 47 through mounting bar 41 along left right direction round trip movement to brush about the in-process is swept simultaneously around making brush roller 47 carry out the kraft paper, improved the clearance effect to the kraft paper. The mounting bar 41 is arranged along the left-right direction, and vertical rods 42 are fixedly mounted at the left end and the right end of the mounting bar 41. A guide rail 43 is horizontally and fixedly arranged between the two vertical rods 42 which are symmetrical front and back. Two mounting blocks 44 are symmetrically arranged on the guide rail 43 in a sliding fit manner from front to back, a limiting sleeve 45 penetrating through the guide rail 43 is vertically and fixedly mounted at the bottom of each mounting block 44, and a mounting plate 46 is vertically arranged in each limiting sleeve 45 in a sliding fit manner. A brush roller 47 arranged along the left-right direction is horizontally and rotatably arranged between the two mounting plates which are symmetrical left and right. A first motor 48 is fixedly mounted on the mounting plate 46 near the right side, and the output end of the first motor 48 is fixedly connected with the brush roller 47. The front end and the rear end of the guide rail 43 are symmetrically and fixedly provided with supporting plates 49, and a bidirectional screw 410 which penetrates through the two mounting blocks 44 and is in rotary fit with the mounting blocks 44 through threads is horizontally and rotatably arranged between the two supporting plates 49 which are symmetrical front and rear. A second motor 411 is fixedly mounted on the supporting plate 49 near the rear, and the output end of the second motor 411 is fixedly connected with the bidirectional screw 410. The wetted paper-plastic composite bag is driven by the clamping mechanism 3 to move upwards until the wetted paper-plastic composite bag is attached to the brush roller 47. The first motor 48 drives the brush roller 47 to rotate, so as to clean the softened kraft paper. The second motor 411 drives the bidirectional screw 410 to rotate, so as to drive the two mounting blocks 44 to move from the middle to the front and rear ends, and the mounting blocks 44 drive the limiting sleeve 45, the mounting plate 46 and the brush roller 47 to move from the middle to the front and rear ends. The brush roller 47 cleans the softened kraft paper from the plastic layer, and pushes the cleaned kraft paper scraps to move from the middle to the front and rear ends until the kraft paper scraps are separated from the plastic layer and then automatically fall into the water tank 2. The second motor 411 drives the bidirectional screw 410 to rotate reversely, so as to drive the two mounting blocks 44 to move from the front end to the rear end to the middle, the mounting blocks 44 drive the limiting sleeves 45, the mounting plates 46 and the brush rollers 47 to move from the front end to the rear end to the middle, and the brush rollers 47 return to the initial positions.

In this embodiment, the magnet bars 312 are vertically and fixedly mounted on the left and right inner side walls of the water tank 2 at positions corresponding to the brackets 34. The bracket 34 has a slide groove 313 formed therein and arranged in the left-right direction. The bearing strip 35 is fixedly provided with a rotating column 314 which is rotatably matched with the bracket 34. The end surface of the rotating post 314 is provided with a slot corresponding to the sliding slot 313. An iron square block 315 is slidably fitted in the slide groove 313. A second spring 316 is fixedly arranged between the square block 315 and the end surface of the sliding chute 313. In the descending process of the support 34, the pressure-bearing strip 35 and the paper-plastic composite bag, the magnet strip 312 adsorbs the square block 315, the square block 315 slides along the sliding groove 313 to be separated from the slot on the end surface of the rotating column 314, and the second spring 316 is compressed. The rotary post 314 and the pressure bar 35 can rotate freely. In the descending process of the support 34, the pressure-bearing strip 35 and the paper-plastic composite bag, after the square block 315 is separated from the adsorption action of the magnet strip 312, the square block slides along the sliding groove 313 under the elastic action of the second spring 316 to restore to the original position, and is inserted into the slot on the end surface of the rotating column 314 to limit the rotating column 314, so that the pressure-bearing strip 35 and the paper-plastic composite bag are prevented from rotating when the cleaning mechanism 4 cleans kraft paper, the paper-plastic composite bag is ensured to be in a horizontal state, and the cleaning effect is improved.

In this embodiment, a vertical limit groove 412 is formed in the limit sleeve 45, and the mounting plate 46 is slidably fitted in the limit groove 412. The top of the mounting plate 46 is fixedly provided with a mushroom nail 413, and the top surface of the limiting groove 412 is provided with a clamping groove 414 matched with the mushroom nail 413. A third spring 415 is vertically and fixedly arranged between the top surface of the limiting groove 412 and the mounting plate 46. An oil groove 416 communicated with the clamping groove 414 is formed in the limiting sleeve 45, an ejector rod 417 is vertically matched with one end of the oil groove 416 in a sliding mode, and a fourth spring 418 is vertically and fixedly installed between the ejector rod 417 and the inner wall of the oil groove 416. The other end of the oil groove 416 is horizontally and slidably matched with a sealing rod 419, and a first magnet block 420 is fixedly mounted at the end part of the sealing rod 419. The middle part of the guide rail 43 is symmetrically and fixedly provided with a second magnet block 421 corresponding to the first magnet block 420. A wedge block 422 is fixedly mounted on the vertical rod 42 corresponding to the mounting plate 46. In the process that the brush roller 47 moves from the middle to the front end and the rear end to clean the kraft paper, the wedge block 422 lifts the mounting plate 46 and the brush roller 47 upwards, the mounting plate 46 compresses the third spring 415, and the mushroom nails 413 are clamped in the clamping grooves 414, so that the brush roller 47 is limited at a height which is separated from the surface of the kraft paper. In the process that the brush roller 47 moves from the front end to the rear end toward the middle, the brush roller 47 and the kraft paper are in a separated state. After the position limiting sleeve 45 reaches the middle position, mutual repulsion is generated between the first magnet block 420 and the second magnet block 421, the first magnet block 420 pushes the sealing rod 419 to slide along the oil groove 416, the sealing rod 419 extrudes hydraulic oil in the oil groove 416, and the hydraulic oil pushes the push rod 417 to enter the clamping groove 414, so that the mushroom nails 413 are ejected out of the clamping groove 414. The mounting plate 46 is separated from the limiting effect of the clamping groove 414, and the brush roller 47 is driven to move downwards under the elastic force of the third spring 415 until the brush roller 47 is pressed against the surface of the kraft paper again, and the brush roller 47 moves from the middle to the front end and the rear end to clean the kraft paper again.

As shown in fig. 1, the embodiment provides a recycling method for a renewable environment-friendly paper-plastic composite bag, which is completed by matching the recycling machine for the renewable environment-friendly paper-plastic composite bag, and comprises the following steps:

step one, fixing the paper-plastic composite bag: the kraft paper of the paper-plastic composite bag faces upwards, the edges of the left end and the right end of the paper-plastic composite bag are plugged between the pressure bearing strip 35 and the pressure applying strip 38, and the edges of the left end and the right end of the paper-plastic composite bag are clamped tightly.

Step two, soaking the paper-plastic composite bag: after water is injected into the water tank 2, the paper-plastic composite bag is driven by the air cylinder 32 to descend and be immersed in the water. The left end and the right end of the paper-plastic composite bag are driven by the electric slide block 31 to periodically move in opposite directions, so that the paper-plastic composite bag is periodically bent and tensioned. In the process, the paper-plastic composite bag is driven to twist by the cooperation of the guide wheel 310 and the guide plate 5, so that wrinkles are formed on the surface of the paper-plastic composite bag.

Step three, removing kraft paper: the paper-plastic composite bag is driven by the air cylinder 32 to rise out of the water until the kraft paper is pressed against the brush roller 47. The first motor 48 drives the brush rollers 47 to rotate, and the second motor 411 drives the two brush rollers 47 which are symmetrical front and back to move from the middle to the front end and the back end, so that the soaked kraft paper is cleaned.

Step four, cleaning the plastic layer: and (2) putting the paper-plastic composite bag without the kraft paper into water according to the method in the second step, cleaning the residual kraft paper on the plastic layer through water flow, moving the cleaned plastic layer out of the water surface, and finally detaching the edges of the left end and the right end of the plastic layer from the clamping mechanism 3.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for recycling and processing a renewable environment-friendly paper-plastic composite bag is completed by matching a renewable environment-friendly paper-plastic composite bag recycling and processing machine, and is characterized in that: the renewable environment-friendly paper-plastic composite bag recycling machine comprises a horizontal bottom plate (1), wherein a water tank (2) with a rectangular cross section is fixedly arranged on the upper surface of the bottom plate (1), and an opening is formed in the top surface of the water tank (2); two clamping mechanisms (3) are symmetrically arranged on the left and right of the upper surface of the bottom plate (1); the upper surface of the bottom plate (1) is provided with a cleaning mechanism (4);

the clamping mechanism (3) comprises an electric sliding block (31), an air cylinder (32), a top plate (33), a bracket (34), a pressure bearing strip (35), a screw rod (36), a guide rod (37), a pressure applying strip (38), a first spring (39) and a guide wheel (310); the number of the electric sliding blocks (31) is two, the two electric sliding blocks (31) are symmetrically arranged on the front side and the rear side of the water tank (2), and the electric sliding blocks (31) are in sliding fit with the bottom plate (1) along the left-right direction; the electric sliding block (31) is vertically and fixedly provided with air cylinders (32), and the top ends of piston rods of the two air cylinders (32) are horizontally and fixedly provided with top plates (33) arranged along the front-back direction; the lower surface of the top plate (33) is fixedly connected with an L-shaped support (34), the end part of the support (34) is provided with a pressure-bearing strip (35) which is arranged along the front-back direction, and the pressure-bearing strip (35) is in running fit with the support (34); the front end and the rear end of the upper surface of the pressure-bearing strip (35) are respectively and vertically provided with a screw rod (36) and a guide rod (37); a pressure strip (38) parallel to the pressure bearing strip (35) is matched on the guide rod (37) in a sliding way; the screw rod (36) penetrates through the pressing strip (38) and is in rotating fit with the pressing strip (38) through threads; a first spring (39) is arranged between the top surface of the pressing strip (38) and the bottom surface of the top plate (33); guide wheels (310) are rotatably arranged at the front end and the rear end of the lower surface of the pressure bearing strip (35), and guide plates (5) are vertically and fixedly arranged on a bottom plate of the water tank (2) along the left-right direction; the top surface of the guide plate (5) is matched with the guide wheel (310) in a rolling way;

the cleaning mechanism (4) comprises a mounting bar (41), a vertical rod (42), a guide rail (43), a mounting block (44), a limiting sleeve (45), a mounting plate (46), a brush roller (47), a first motor (48), a supporting plate (49), a bidirectional screw (410) and a second motor (411); the number of the mounting bars (41) is two, the two mounting bars (41) are symmetrically mounted on the bottom plates (1) on the front side and the rear side of the water tank (2), the mounting bars (41) are arranged along the left-right direction, and the left end and the right end of the mounting bars (41) are fixedly provided with vertical rods (42); a guide rail (43) is horizontally and fixedly arranged between the two vertical rods (42) which are symmetrical front and back; two mounting blocks (44) are symmetrically matched with the guide rail (43) in a sliding manner from front to back, a limiting sleeve (45) penetrating through the guide rail (43) is vertically and fixedly mounted at the bottom of each mounting block (44), and a mounting plate (46) is vertically matched with the limiting sleeve (45) in a sliding manner; brush rollers (47) which are arranged along the left and right direction are horizontally and rotatably arranged between the two mounting plates which are symmetrical left and right; a first motor (48) is fixedly arranged on the mounting plate (46) close to the right side, and the output end of the first motor (48) is fixedly connected with the brush roller (47); supporting plates (49) are symmetrically and fixedly installed at the front end and the rear end of the guide rail (43), and a bidirectional screw rod (410) which penetrates through the two installation blocks (44) and is in rotary fit with the installation blocks (44) through threads is horizontally and rotatably installed between the two supporting plates (49) which are symmetrical in front and rear; a second motor (411) is fixedly installed on the supporting plate (49) close to the rear part, and the output end of the second motor (411) is fixedly connected with the bidirectional screw rod (410);

step one, fixing the paper-plastic composite bag: facing the kraft paper of the paper-plastic composite bag upwards, and inserting the edges of the left end and the right end of the paper-plastic composite bag between the pressure bearing strip (35) and the pressure applying strip (38) to clamp the edges of the left end and the right end of the paper-plastic composite bag;

step two, soaking the paper-plastic composite bag: after water is injected into the water tank (2), the paper-plastic composite bag is driven to descend by the air cylinder (32) and is immersed in the water; the left end and the right end of the paper-plastic composite bag are driven to periodically move in the opposite direction through the electric sliding block (31), so that the paper-plastic composite bag is periodically bent and tensioned; in the process, the paper-plastic composite bag is driven to twist through the matching of the guide wheel (310) and the guide plate (5), so that wrinkles are formed on the surface of the paper-plastic composite bag;

step three, removing kraft paper: the paper-plastic composite bag is driven by the air cylinder (32) to rise away from the water surface until the kraft paper is pressed against the brush roller (47); the first motor (48) drives the brush rollers (47) to rotate, and the second motor (411) drives the two brush rollers (47) which are symmetrical front and back to move from the middle to the front and back ends, so that the soaked kraft paper is cleaned;

step four, cleaning the plastic layer: and (2) putting the paper-plastic composite bag without the kraft paper into water according to the method in the second step, washing the residual kraft paper on the plastic layer through water flow, then moving the washed plastic layer out of the water surface, and finally detaching the edges of the left end and the right end of the plastic layer from the clamping mechanism (3).

2. The recycling method of the renewable environment-friendly paper-plastic composite bag according to claim 1, characterized in that: the mounting bar (41) is an electric sliding plate and is mounted on the upper surface of the bottom plate (1) in a sliding mode along the left-right direction.

3. The recycling method of the renewable environment-friendly paper-plastic composite bag according to claim 1, characterized in that: and a rubber strip (311) parallel to the pressure-bearing strip (35) is fixedly attached to the upper surface of the pressure-bearing strip.

4. The recycling method of the renewable environment-friendly paper-plastic composite bag according to claim 1, characterized in that: the top surfaces of the guide plates (5) positioned at the left front part and the right rear part in the water tank (2) are of structures with high left and right ends and low middle; the top surfaces of the guide plates (5) positioned at the left rear part and the right front part in the water tank (2) are of structures with lower left ends and lower right ends and higher middle.

5. The recycling method of the renewable environment-friendly paper-plastic composite bag according to claim 1, characterized in that: magnet strips (312) are vertically and fixedly arranged on the left inner side wall and the right inner side wall of the water tank (2) corresponding to the positions of the brackets (34); a sliding groove (313) arranged along the left-right direction is formed in the bracket (34); a rotating column (314) which is in rotating fit with the bracket (34) is fixedly arranged on the pressure bearing strip (35); the end surface of the rotating column (314) is provided with a slot corresponding to the sliding groove (313); an iron square block (315) is in sliding fit in the sliding groove (313); a second spring (316) is fixedly arranged between the square block (315) and the end surface of the sliding groove (313).

6. The recycling method of the renewable environment-friendly paper-plastic composite bag according to claim 1, characterized in that: a vertical limiting groove (412) is formed in the limiting sleeve (45), and the mounting plate (46) is in sliding fit in the limiting groove (412); the top of the mounting plate (46) is fixedly provided with a mushroom nail (413), and the top surface of the limiting groove (412) is provided with a clamping groove (414) matched with the mushroom nail (413); a third spring (415) is vertically and fixedly arranged between the top surface of the limiting groove (412) and the mounting plate (46); an oil groove (416) communicated with the clamping groove (414) is formed in the limiting sleeve (45), a top rod (417) is vertically matched with one end of the oil groove (416) in a sliding manner, and a fourth spring (418) is vertically and fixedly installed between the top rod (417) and the inner wall of the oil groove (416); a sealing rod (419) is horizontally matched at the other end of the oil groove (416) in a sliding manner, and a first magnet block (420) is fixedly mounted at the end part of the sealing rod (419); a second magnet block (421) corresponding to the first magnet block (420) is symmetrically and fixedly arranged in the middle of the guide rail (43) in a front-back manner; the vertical rod (42) is fixedly provided with a wedge block (422) corresponding to the position of the mounting plate (46).