CN112092325A - Production method of polypropylene biaxially oriented film - Google Patents

Production method of polypropylene biaxially oriented film Download PDF

Info

Publication number
CN112092325A
CN112092325A CN202010886248.8A CN202010886248A CN112092325A CN 112092325 A CN112092325 A CN 112092325A CN 202010886248 A CN202010886248 A CN 202010886248A CN 112092325 A CN112092325 A CN 112092325A
Authority
CN
China
Prior art keywords
water
rod
thick sheet
rotating shaft
biaxially oriented
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202010886248.8A
Other languages
Chinese (zh)
Inventor
周雪琳
吴玉坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202010886248.8A priority Critical patent/CN112092325A/en
Publication of CN112092325A publication Critical patent/CN112092325A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0092—Drying moulded articles or half products, e.g. preforms, during or after moulding or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/28—Storing of extruded material, e.g. by winding up or stacking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/885—External treatment, e.g. by using air rings for cooling tubular films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

The invention relates to the field of film production, in particular to a production method of a polypropylene biaxially oriented film, wherein a production device used in the method comprises a bearing bottom plate, a bearing frame is arranged at the upper end of the bearing bottom plate, a second rotating shaft is arranged at the rear end inside the bearing frame, a stretching rod is arranged at the rear end of the second rotating shaft, a groove is arranged above the second rotating shaft on the outer surface of the rear end inside the bearing frame, a compression spring is arranged at the upper end inside the groove, a connecting block is arranged inside the groove at the lower end of the compression spring, a first rotating shaft is arranged at the rear end of the connecting block, a squeezing rod is arranged at the rear end of the first rotating shaft, a supporting plate is arranged on one side of the bearing frame at the upper end of the bearing bottom plate, and a. The production method of the polypropylene biaxially oriented film can facilitate the installation of the winding rod, improve the stretching quality and bring better use prospect.

Description

Production method of polypropylene biaxially oriented film
Technical Field
The invention relates to the field of film production, in particular to a production method of a polypropylene biaxially oriented film.
Background
The production line of the polypropylene biaxial stretching film is characterized in that polypropylene is heated and extruded by an extruder, is cooled by a cooling tank and a water tank of the extruder, is removed by a fan when being cooled, and is stretched by a stretching roller to form a film; the existing polypropylene biaxial stretching film production line has certain defects in use, the stretching quality is too low, the winding rod is inconvenient to install, and certain adverse effects are brought to practical use;
in the process of film production, the water-cooled thick sheet is required to be dried, so that the thin film can be conveniently stretched in the following process, but the efficiency is low only by the dewatering fan, and the drying effect is achieved by stopping in the dewatering chamber for a period of time, so that the discontinuity of the production process is caused; therefore, a method for producing the polypropylene biaxially oriented film is provided.
Disclosure of Invention
The invention mainly aims to provide a production method of a polypropylene biaxially oriented film, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for producing a polypropylene biaxially oriented film comprises the following steps:
s1: a user injects a polypropylene raw material into the extruder, and then the started extruder heats the polypropylene raw material and extrudes the polypropylene raw material;
s2: feeding the extruded polypropylene into a cooling tank and a water tank in sequence, cooling the polypropylene, and forming a thick sheet by the cooled polypropylene;
s3: after the thick sheet in the S2 is formed, drying the water absorbed by the thick sheet in the water tank by a water removal fan;
s4: after the thick sheet in the S3 is dried, stretching the thick sheet by stretching rollers on a plurality of groups of bearing frames on the production device to change the thick sheet into a thin film, and winding the thin film formed by stretching on a winding rod for later use;
the production device used in the S4 comprises a bearing bottom plate and a controller, wherein the controller is used for controlling the operation of the production device; the upper end of the bearing bottom plate is provided with a bearing frame, the rear end inside the bearing frame is provided with a second rotating shaft, the rear end of the second rotating shaft is provided with a stretching stick, a groove is arranged above the second rotating shaft on the outer surface of the inner rear end of the bearing frame, a compression spring is arranged at the upper end inside the groove, a connecting block is arranged inside the groove at the lower end of the compression spring, the rear end of the connecting block is provided with a first rotating shaft, the rear end of the first rotating shaft is provided with an extrusion stick, a supporting plate is arranged on one side of the bearing frame at the upper end of the bearing bottom plate, a connecting rotating shaft is arranged on the outer surface of the front end of the supporting plate in a penetrating way, a transmission rod penetrates through the inner side of the connecting rotating shaft, a mounting threaded cylinder is arranged at the rear end of the transmission rod, a winding rod is arranged on the inner side of the mounting threaded cylinder, and fixed threaded blocks are arranged on the outer side of the winding rod and the outer side of the mounting threaded cylinder; a water removing chamber is arranged on the other side of the bearing frame at the upper end of the bearing bottom plate, and a water removing fan is arranged in the water removing chamber;
the front end of the bearing bottom plate is provided with a supporting block, the front end of a transmission rod at the upper end of the supporting block is provided with a driving motor, the outer surface of the lower end of the driving motor is fixedly connected with the outer surface of the front end of the bearing bottom plate through the supporting block, the supporting block plays a role in connection and support, the transmission rod plays a role in transmission, and the type of the driving motor is one-three-zero-MB-one-five-zero-A-seven-zero; the water removing fan is arranged on the other side of the bearing frame at the upper end of the bearing bottom plate, a water tank is arranged on one side of the water removing fan on the outer surface of the upper end of the bearing bottom plate, a cooling tank is arranged on one side of the water tank, an extruder is arranged on one side of the cooling tank, the bearing frame plays a supporting role, the type of the water removing fan is KCS-forty-five zero D, the cooling tank and the water tank play a cooling role, and the type of the extruder is SJ forty-fifty-X three zero; the outer surface of the front end of the extrusion rod is movably connected with the outer surface of the rear end of the connecting block through a first rotating shaft, the outer surface of the upper end of the connecting block is movably connected with the outer surface of the inner upper end of the groove through compression springs, the number of the compression springs is a plurality of groups, the extrusion rod plays an extrusion role, the first rotating shaft plays a connecting and rotating role, the connecting block plays a connecting role, and the compression springs play a resetting role; the outer surface of the winding rod is fixedly connected with the inner side outer surface of the mounting threaded cylinder through a fixing threaded block, the inner side outer surface of the fixing threaded block is provided with internal threads, the outer surface of the mounting threaded cylinder is provided with external threads, the internal threads of the fixing threaded block are mutually meshed with the external threads of the mounting threaded cylinder, the winding rod plays a role in winding, and the fixing threaded block and the mounting threaded cylinder play roles in connection and fixation; the outer surface of the front end of the mounting threaded cylinder is fixedly connected with the outer surface of the rear end of the support plate through a transmission rod, the outer surface of the transmission rod is movably connected with the outer surface of the inner side of the support plate through a connecting rotating shaft, the length of the outer diameter of the transmission rod is the same as the length of the inner diameter of the connecting rotating shaft, the support plate plays a supporting role, and the connecting rotating shaft plays a connecting and rotating role;
when in use, a user can insert one end of a winding rod into the mounting threaded barrel through the fixed threaded block, push the winding rod downwards at the same time, align the other end of the winding rod with the other mounting threaded barrel, then insert the other end of the winding rod into the mounting threaded barrel, then simultaneously rotate the two fixed threaded blocks, reduce the inner diameter of the mounting threaded barrel through the fixed threaded blocks, namely fix the winding rod inside the mounting threaded barrel, mount the winding rod on the transmission rod, then inject a polypropylene raw material into the extruder, heat and extrude the polypropylene raw material by the extruder, simultaneously cool the polypropylene raw material into a thick sheet through the cooling tank and the water tank, blow-dry the water adsorbed in the water tank through the water removal fan, then stretch the thick sheet through the stretching rollers on the plurality of groups of bearing frames to form a thin film, and wind the stretched thin film on the winding rod for standby, and when the slab when tensile on tensile rod, can hug closely the extrusion rod through compression spring's on the connecting block flexible performance on the tensile rod, be about for the slab compresses tightly on tensile rod always, makes its tensile rod can be sticis on tensile rod in the rotation in-process slab, avoids it to appear shaking because of pressing not tight slab and influences its tensile quality, and then realizes its benefit that improves tensile quality, and the effect of use is better for traditional mode.
Preferably, two auxiliary dewatering modules are arranged in the dewatering chamber at positions close to the inlet; the two water removing modules are symmetrically distributed on the side walls of the two sides of the water removing chamber; the auxiliary dewatering module comprises a bracket, a push rod motor, a dewatering plate and a water absorption felt; one end of the push rod motor is fixedly arranged on the side wall of the water removing chamber, and the other end of the push rod motor is fixedly connected to the side surface of the supporting rod; the support is arranged into a T shape, and two protruding ends of the support are respectively hinged with a water repelling plate; the sum of the lengths of the two water repelling plates is larger than the width value of the thick sheet, and the water repelling plates are provided with water absorbing felts. When the device works, in the process of film production, the water-cooled thick sheet is required to be dried, so that the film can be conveniently stretched in the following process, but the efficiency is low only by the dewatering fan, and the device is required to be stopped for a period of time in the dewatering chamber in order to achieve the drying effect, so that the discontinuity of the production process is caused; the invention solves the problem, concretely, the auxiliary dewatering module is arranged in the dewatering chamber, when the thick sheet enters the dewatering chamber, the controller controls the push rod motors on the two sides to start, the bracket on the end part and the synchronous push rod motors move to the middle part until the end parts of the dewatering plates on the two sides are contacted, the thick sheet just falls into a space formed by the dewatering plates, so that the dewatering plates are contacted with the two sides of the thick sheet, then the push rod motors are stopped to keep the position of the bracket still, in the normal movement process of the thick sheet, as the auxiliary dewatering module is arranged at the position close to the inlet, water drops attached on the thick sheet can be firstly absorbed by the water absorbing felt on the dewatering plates, even if the water drops are not absorbed, the water drops can be spread on the surface of the thick sheet, the contact area is increased, the thick sheet can enter the dewatering chamber to be quickly dried by the dewatering fan, and quick drying can be realized without waiting, the time is saved, and the production efficiency is improved; according to the invention, the two auxiliary dewatering modules are matched, so that a thick sheet to be dried falls into a space formed by the dewatering plates, the thick sheet is effectively limited, the thick sheet is prevented from vibrating due to the air quantity of the dewatering fan and is not beneficial to stretching in the next process, meanwhile, water drops on the thick sheet can be absorbed or spread by matching the dewatering plates and the water-absorbing felt, the synchronous drying purpose can be realized by matching the dewatering fans, waiting in the drying process is not needed, the time is saved, and the production continuity is greatly improved.
Preferably, a winding roller is arranged on the upper surface of the upper water-dispelling plate, and an unwinding roller is arranged on the lower surface of the lower water-dispelling plate; the winding roller and the unwinding roller are both driven by a rotating motor; two guide rollers are arranged at the corner of one side of the support, which is sunken; one end of the water-absorbing felt is connected to the winding roller, and the other end of the water-absorbing felt is connected to the unwinding roller after sequentially penetrating through the two guide rollers. When the water absorbing felt works, water absorption saturation is very easy to occur in the using process of the water absorbing felt, the water absorbing felt needs to be replaced frequently in sequence, the drying process needs to be stopped, and production continuity is affected.
Preferably, through holes are formed in the ends, far away from the water-dispelling plates, of the water-dispelling plates; an electromagnet is inserted into the through hole; the direction of the magnetic force is changed through the electromagnet, so that the opening and closing action between the two water repelling plates is realized. When the water catch-up device works, the contact area between the thick sheet and the water catch-up plate is inconsistent due to the fact that the thickness of the produced thick sheet is inconsistent, so that the water catch-up plate is always in close contact with two sides of the thick sheet, the two groups of electromagnets are controlled by the controller, when the thickness of the thick sheet is thinner, the upper group of electromagnets and the lower group of electromagnets are controlled to attract each other magnetically, the two water catch-up plates swing along respective hinge points, the distance between the two water catch-up plates is reduced, and the thick sheet is always attached to the water catch-up plate; when the thickness of slab is thicker, magnetism between two sets of electro-magnets about the controller control is repelled this moment to make the distance between two boards of catching up with water grow, guaranteed that the slab is effectual to paste with the board both sides of catching up with water and tightly.
Preferably, a group of spray heads are respectively arranged on the front side face and the rear side face of the bracket; the spray head is connected with the air pump through an air pipe; a pipeline is wound on the outer wall of the extruder; the pipeline is communicated with the air pump; the air pump is used for sending the hot air overflowed from the extruder into the spray head through the pipeline and the air pipe and spraying the hot air out of the spray head. The during operation, when adnexed drop of water is too much on the thick piece, need control the water pump and start, gas in the pipeline is by waste heat heating on the extruder, thereby it spouts through the trachea shower nozzle afterwards to heat back gas through the air pump, thereby make the intratracheal spun hot gas form gaseous interlayer, thereby drive excessive drop of water on the thick piece tentatively, adsorb and remove the air-drying of water fan through the felt that absorbs water afterwards again, further improve dry efficiency, and the steam that utilizes waste heat heating also can carry out the drying to the thick piece, and the drying effect is improved, the effectual utilization of resources that has realized.
Compared with the prior art, the invention has the following beneficial effects:
1. the production device used in the invention is provided with the compression spring, so that when the thick sheet is stretched on the stretching rod, the extrusion rod can be attached to the stretching rod in a clinging manner through the telescopic performance of the compression spring on the connecting block, namely, the thick sheet is always pressed on the stretching rod, so that the thick sheet can be pressed on the stretching rod in the rotation process of the stretching rod, the phenomenon that the stretching quality is influenced by shaking caused by the fact that the thick sheet is not pressed tightly is avoided, and the advantage of improving the stretching quality is further realized.
2. The production device used in the invention is provided with the mounting thread cylinder, so that one end of the winding rod can penetrate through the fixed thread blocks and be inserted into the mounting thread cylinder, the winding rod is pushed downwards at the same time, the other end of the winding rod is aligned to the other mounting thread cylinder, then the other end of the winding rod is inserted into the mounting thread cylinder, and then the two fixed thread blocks are rotated simultaneously, so that the winding rod is fixed inside the mounting thread cylinder by reducing the inner diameter of the mounting thread cylinder through the fixed thread blocks, namely the winding rod is fixed inside the mounting thread cylinder, the purpose of mounting the winding rod on the transmission rod is achieved, the advantage of convenience in mounting the winding rod is further realized, and the using effect is better than that of the traditional mode.
3. The production device used in the invention is matched with the two auxiliary dewatering modules, so that the thick sheet to be dried falls into the space formed by the dewatering plates, the thick sheet is effectively limited, the thick sheet is prevented from vibrating due to the air quantity of the dewatering fan and is not beneficial to the stretching of the next procedure, meanwhile, the water beads on the thick sheet can be absorbed or spread by the cooperation of the dewatering plates and the water-absorbing felt, the synchronous drying purpose can be realized by the cooperation of the dewatering fans, the waiting in the drying procedure is not needed, the time is saved, and the production continuity is greatly improved.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view showing the overall structure of a production apparatus used in the present invention;
FIG. 3 is a sectional view showing the connection of a take-up reel and a driving reel of the production apparatus used in the present invention;
FIG. 4 is an enlarged view of A in FIG. 3;
FIG. 5 is a view showing the connection of the squeeze roll and the carrier frame of the manufacturing apparatus used in the present invention;
FIG. 6 is a rear view showing the connection of the connection block to the carrier of the manufacturing apparatus used in the present invention;
FIG. 7 is a schematic view of a mounting threaded cylinder of a production apparatus used in the present invention;
FIG. 8 is a front view of the water removal chamber;
FIG. 9 is a side view of the water repelling plate and the bracket;
FIG. 10 is an enlarged view of B in FIG. 8;
in the figure: 1. a load floor; 2. an extruder; 3. a cooling tank; 4. a water tank; 5. a water removing chamber; 6. a carrier; 7. stretching the rod; 8. a squeezing rod; 9. a support block; 10. a drive motor; 11. winding the rod; 12. a support plate; 13. connecting the rotating shaft; 14. a transmission rod; 15. installing a threaded cylinder; 16. fixing the thread block; 17. a groove; 18. connecting blocks; 19. a first rotating shaft; 20. a compression spring; 21. a second rotating shaft; 22. an auxiliary water removal module; 23. a support; 24. a push rod motor; 25. a water repelling plate; 26. a water-absorbing felt; 27. a wind-up roll; 28. unwinding rollers; 29. an electromagnet; 30. and (4) a spray head.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 10, a method for producing a biaxially oriented polypropylene film comprises the following steps:
s1: a user injects a polypropylene raw material into the extruder 2, and then the started extruder 2 heats and extrudes the polypropylene raw material;
s2: feeding the extruded polypropylene into a cooling tank 3 and a water tank 4 in sequence, cooling the polypropylene, and forming a thick sheet by the cooled polypropylene;
s3: after the thick sheet in the S2 is formed, drying the water absorbed by the thick sheet in the water tank 4 by a water removal fan;
s4: after the thick sheet in the S3 is dried, stretching the thick sheet by stretching rollers 7 on a plurality of groups of bearing frames 6 on the production device to change the thick sheet into a thin film, and winding the thin film formed by stretching on a winding rod 11 for later use;
the production device used in the step S4 comprises a bearing bottom plate 1 and a controller, wherein the controller is used for controlling the operation of the production device; the bearing device is characterized in that a bearing frame 6 is arranged at the upper end of the bearing bottom plate 1, a second rotating shaft 21 is arranged at the rear end inside the bearing frame 6, a stretching rod 7 is arranged at the rear end of the second rotating shaft 21, a groove 17 is arranged above the second rotating shaft 21 on the outer surface of the rear end inside the bearing frame 6, a compression spring 20 is arranged at the upper end inside the groove 17, a connecting block 18 is arranged inside the groove 17 at the lower end of the compression spring 20, a first rotating shaft 19 is arranged at the rear end of the connecting block 18, a squeezing rod 8 is arranged at the rear end of the first rotating shaft 19, a supporting plate 12 is arranged at one side of the bearing frame 6 at the upper end of the bearing bottom plate 1, a connecting rotating shaft 13 is arranged on the outer surface of the front end of the supporting plate 12 in a penetrating manner, a transmission rod 14 is, a winding rod 11 is arranged on the inner side of the mounting threaded cylinder 15, and fixed threaded blocks 16 are arranged on the outer side of the winding rod 11 and the outer side of the mounting threaded cylinder 15; a water removing chamber 5 is arranged on the other side of the bearing frame 6 at the upper end of the bearing bottom plate 1, and a water removing fan is arranged in the water removing chamber 5;
the front end of the bearing bottom plate 1 is provided with a supporting block 9, the front end of a transmission rod 14 at the upper end of the supporting block 9 is provided with a driving motor 10, the outer surface of the lower end of the driving motor 10 is fixedly connected with the outer surface of the front end of the bearing bottom plate 1 through the supporting block 9, the supporting block 9 plays a role in connection and support, the transmission rod 14 plays a role in transmission, and the model of the driving motor 10 is three-zero MB, one-five-zero A-seven-zero one-zero; a water removal fan 5 is arranged on the other side of a bearing frame 6 at the upper end of the bearing bottom plate 1, a water tank 4 is arranged on one side of the water removal fan 5 on the outer surface of the upper end of the bearing bottom plate 1, a cooling tank 3 is arranged on one side of the water tank 4, an extruder 2 is arranged on one side of the cooling tank 3, the bearing frame 6 plays a supporting role, the type of the water removal fan 5 is KCS-forty-five-zero D, the cooling tank 3 and the water tank 4 play a cooling role, and the type of the extruder 2 is SJ forty-fifty-four-X; the outer surface of the front end of the extrusion stick 8 is movably connected with the outer surface of the rear end of the connecting block 18 through a first rotating shaft 19, the outer surface of the upper end of the connecting block 18 is movably connected with the outer surface of the inner upper end of the groove 17 through compression springs 20, the number of the compression springs 20 is a plurality of groups, the extrusion stick 8 plays an extrusion role, the first rotating shaft 19 plays a connecting and rotating role, the connecting block 18 plays a connecting role, and the compression springs 20 play a resetting role; the outer surface of the winding rod 11 is fixedly connected with the inner side outer surface of the mounting thread cylinder 15 through a fixing thread block 16, the inner side outer surface of the fixing thread block 16 is provided with internal threads, the outer surface of the mounting thread cylinder 15 is provided with external threads, the internal threads of the fixing thread block 16 are mutually meshed with the external threads of the mounting thread cylinder 15, the winding rod 11 plays a role in winding, and the fixing thread block 16 and the mounting thread cylinder 15 play roles in connection and fixation; the outer surface of the front end of the mounting threaded cylinder 15 is fixedly connected with the outer surface of the rear end of the support plate 12 through a transmission rod 14, the outer surface of the transmission rod 14 is movably connected with the outer surface of the inner side of the support plate 12 through a connecting rotating shaft 13, the length of the outer diameter of the transmission rod 14 is the same as that of the inner diameter of the connecting rotating shaft 13, the support plate 12 plays a supporting role, and the connecting rotating shaft 13 plays a connecting and rotating role;
when in use, a user can insert one end of the winding rod 11 into the mounting threaded cylinder 15 through the fixing threaded block 16, push the winding rod 11 downwards at the same time, align the other end of the winding rod 11 with the other mounting threaded cylinder 15, then insert the other end of the winding rod 11 into the mounting threaded cylinder 15, then rotate the two fixing threaded blocks 16 at the same time, reduce the inner diameter of the mounting threaded cylinder 15 through the fixing threaded blocks 16, namely fix the winding rod 11 inside the mounting threaded cylinder 15, mount the winding rod 11 on the transmission rod 14, then inject polypropylene raw materials into the extruder 2, heat and extrude the polypropylene raw materials by the extruder 2, cool the polypropylene raw materials into a thick sheet through the cooling tank 3 and the water tank 4, blow dry the water adsorbed in the water tank 4 through the water removal fan 5, and then stretch the thick sheet through the plurality of groups of stretching sticks 7 on the bearing frame 6, make it form the film, the film of tensile completion can be rolled up and carry out reserve on rolling rod 11, and when the slab is tensile on tensile rod 7, can hug closely extrusion rod 8 through compression spring 20's on connecting block 18 flexible performance and attach on tensile rod 7, be about to the slab compresses tightly on tensile rod 7 always, make its tensile rod 7 can be sticis on tensile rod 7 rotating in-process slab, avoid it to appear shaking because of pressing not tight slab and influence its tensile quality, and then realize its benefit that improves tensile quality, the effect of use is better for traditional mode.
As an embodiment of the present invention, two auxiliary water removal modules 22 are disposed in the water removal chamber 5 at positions close to the inlet; the two dewatering modules are symmetrically distributed on the side walls of two sides of the dewatering chamber 5; the auxiliary water removal module comprises a bracket 23, a push rod motor 24, a water-removing plate 25 and a water-absorbing felt 26; one end of the push rod motor 24 is fixedly arranged on the side wall of the water removing chamber 5, and the other end of the push rod motor is fixedly connected to the side surface of the support rod; the bracket 23 is arranged in a T shape, and two protruding ends of the bracket 23 are respectively hinged with a water repelling plate 25; the sum of the lengths of the two water repelling plates 25 is larger than the width value of the thick sheet, and the water repelling plates 25 are provided with water absorbing felts 26. During the operation, in the process of film production, the water-cooled thick sheet is required to be dried, so that the film can be conveniently stretched in the following process, but the efficiency is low only by the dewatering fan, and the drying effect is achieved by stopping in the dewatering chamber 5 for a period of time, so that the discontinuity of the production process is caused; according to the invention, the problem is solved, specifically, the auxiliary dewatering module 22 is installed in the dewatering chamber 5, when the thick sheet enters the dewatering chamber 5, the controller controls the push rod motors 24 on both sides to start, the bracket 23 on the end part and the synchronous push move to the middle part until the end parts of the water expelling plates 25 on both sides contact, the thick sheet just falls into the space formed by the water expelling plates 25, so that the water expelling plates 25 contact both sides of the thick sheet, then the push rod motors 24 are stopped to keep the position of the bracket 23 still, during the normal movement of the thick sheet, because the auxiliary dewatering module 22 is installed at the position close to the inlet, the water drops adhered on the thick sheet are firstly absorbed by the water absorbing felt 26 on the water expelling plates 25, even if the water drops are not absorbed, the water drops are spread on the surface of the thick sheet, the contact area is increased, and the thick sheet is favorable for entering the dewatering chamber 5 to be quickly dried by the dewatering fan, the rapid drying can be realized without waiting, the time is saved, and the production efficiency is also improved; according to the invention, the two auxiliary dewatering modules 22 are matched, so that a thick sheet to be dried falls into a space formed by the dewatering plate 25, the thick sheet is effectively limited, the thick sheet is prevented from being vibrated due to the air quantity of the dewatering fan and is not beneficial to stretching in the next process, meanwhile, water drops on the thick sheet can be absorbed or spread by matching the dewatering plate 25 and the water absorbing felt 26, the synchronous drying purpose can be realized by matching the dewatering fan, waiting in the drying process is not needed, the time is saved, and the production continuity is greatly improved.
As an embodiment of the present invention, a wind-up roll 27 is provided on the upper surface of the upper water-expelling plate 25, and a wind-up roll 28 is provided on the lower surface of the lower water-expelling plate 25; the winding roller 27 and the unwinding roller 28 are both driven by a rotating motor; two guide rollers are arranged at the corner of one concave side of the bracket 23; one end of the water-absorbing felt 26 is connected to the winding roller 27, and the other end of the water-absorbing felt is connected to the unwinding roller 28 after sequentially passing through the two guide rollers. When the water absorbing felt works, the water absorbing felt is easy to absorb water and saturate in the using process, and the water absorbing felt needs to be replaced frequently in sequence, so that the drying process needs to be stopped, and the production continuity is influenced.
In one embodiment of the invention, through holes are arranged on one end of the water repelling plate 25 between the two ends; an electromagnet 29 is inserted into the through hole; the electromagnet 29 changes the magnetic force direction, thereby realizing the opening and closing action between the two water repelling plates 25. When the device works, the contact area between the thick sheet and the water expelling plate 25 is inconsistent due to the fact that the thickness of the produced thick sheet is inconsistent, so that in order to ensure that the water expelling plate 25 is always in close contact with two sides of the thick sheet, the two groups of electromagnets 29 are controlled by the controller, when the thickness of the thick sheet is thinner, the upper groups of electromagnets 29 and the lower groups of electromagnets 29 are controlled to be magnetically attracted, the two water expelling plates 25 swing along respective hinge points, the distance between the two water expelling plates 25 is reduced, and the thick sheet is ensured to be always attached to the water expelling plate 25; when the thickness of the thick plate is thick, the controller controls the magnetism between the upper and lower groups of electromagnets 29 to repel each other, so that the distance between the two water repelling plates 25 is increased, and the thick plate is effectively attached to the two sides of the water repelling plates 25.
As an embodiment of the present invention, a set of nozzles 30 is respectively disposed on the front and rear sides of the support 23; the spray head 30 is connected with the air pump through an air pipe; a pipeline is wound on the outer wall of the extruder 2; the pipeline is communicated with the air pump; the air pump is used for sending the hot air overflowed from the extruder 2 into the spray head 30 through a pipeline and an air pipe and spraying the hot air out of the spray head 30. The during operation, when adnexed drop of water is too much on the thick piece, need control the water pump and start, gas in the pipeline is by waste heat heating on extruder 2, thereby it is gaseous through the air pump blowout through trachea shower nozzle 30 afterwards to heat the back, thereby make the interior spun hot gas of trachea form gaseous interlayer, thereby drive too much drop of water on the thick piece tentatively, it is air-dried with the dewatering fan to adsorb through the felt 26 that absorbs water afterwards again, further improve dry efficiency, and the steam that utilizes waste heat heating also can dry the thick piece, drying effect is improved, the effectual utilization of resources that has realized.
When in use, a user can insert one end of the winding rod 11 into the mounting threaded cylinder 15 through the fixing threaded block 16, push the winding rod 11 downwards at the same time, align the other end of the winding rod 11 with the other mounting threaded cylinder 15, then insert the other end of the winding rod 11 into the mounting threaded cylinder 15, then rotate the two fixing threaded blocks 16 at the same time, reduce the inner diameter of the mounting threaded cylinder 15 through the fixing threaded blocks 16, namely fix the winding rod 11 inside the mounting threaded cylinder 15, mount the winding rod 11 on the transmission rod 14, then inject polypropylene raw materials into the extruder 2, heat and extrude the polypropylene raw materials by the extruder 2, cool the polypropylene raw materials into a thick sheet through the cooling tank 3 and the water tank 4, blow dry the water adsorbed in the water tank 4 through the water removal fan 5, and then stretch the thick sheet through the plurality of groups of stretching sticks 7 on the bearing frame 6, the film is formed, the stretched film can be wound on the winding rod 11 for standby, when the thick sheet is stretched on the stretching rod 7, the extrusion rod 8 can be attached to the stretching rod 7 in a clinging manner through the telescopic performance of the compression spring 20 on the connecting block 18, namely, the thick sheet is always pressed on the stretching rod 7, so that the thick sheet can be pressed on the stretching rod 7 in the rotating process of the stretching rod 7, the phenomenon that the thick sheet is shaken due to the fact that the thick sheet is not pressed tightly to influence the stretching quality of the thick sheet is avoided, the advantage of improving the stretching quality of the thick sheet is further achieved, and the using effect is better than that of a traditional mode;
in the process of film production, the water-cooled thick sheet is required to be dried, so that the film can be conveniently stretched into a film in the following process, but the efficiency is low only by the dewatering fan, and the drying effect is achieved by stopping in the dewatering chamber 5 for a period of time, so that the discontinuity of the production process is caused; according to the invention, the problem is solved, specifically, the auxiliary dewatering module 22 is installed in the dewatering chamber 5, when the thick sheet enters the dewatering chamber 5, the controller controls the push rod motors 24 on both sides to start, the bracket 23 on the end part and the synchronous push move to the middle part until the end parts of the water expelling plates 25 on both sides contact, the thick sheet just falls into the space formed by the water expelling plates 25, so that the water expelling plates 25 contact both sides of the thick sheet, then the push rod motors 24 are stopped to keep the position of the bracket 23 still, during the normal movement of the thick sheet, because the auxiliary dewatering module 22 is installed at the position close to the inlet, the water drops adhered on the thick sheet are firstly absorbed by the water absorbing felt 26 on the water expelling plates 25, even if the water drops are not absorbed, the water drops are spread on the surface of the thick sheet, the contact area is increased, and the thick sheet is favorable for entering the dewatering chamber 5 to be quickly dried by the dewatering fan, the rapid drying can be realized without waiting, the time is saved, and the production efficiency is also improved; according to the invention, the two auxiliary dewatering modules 22 are matched, so that a thick sheet to be dried falls into a space formed by the dewatering plate 25, the thick sheet is effectively limited, the thick sheet is prevented from being vibrated due to the air quantity of the dewatering fan and is not beneficial to stretching in the next process, meanwhile, water drops on the thick sheet can be absorbed or spread by matching the dewatering plate 25 and the water absorbing felt 26, the synchronous drying purpose can be realized by matching the dewatering fan, waiting in the drying process is not needed, the time is saved, and the production continuity is greatly improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A production method of a polypropylene biaxial stretching film is characterized by comprising the following steps:
s1: a user injects a polypropylene raw material into the extruder (2), and then the extruder (2) after being started heats the polypropylene raw material and extrudes the heated polypropylene raw material;
s2: the extruded polypropylene is sequentially sent into a cooling tank (3) and a water tank (4) to cool the polypropylene, and the cooled polypropylene forms a thick sheet;
s3: after the thick sheet in the S2 is formed, drying the water absorbed by the thick sheet in the water tank (4) by a water removal fan;
s4: after the thick sheet in the S3 is dried, the thick sheet is stretched through stretching rollers (7) on a plurality of groups of bearing frames (6) on a production device, so that the thick sheet becomes a thin film, and the thin film formed by stretching is wound on a winding rod (11) for standby;
the production device used in the S4 comprises a bearing bottom plate (1) and a controller, wherein the controller is used for controlling the operation of the production device; the bearing device is characterized in that a bearing frame (6) is arranged at the upper end of the bearing bottom plate (1), a second rotating shaft (21) is arranged at the rear end inside the bearing frame (6), a stretching stick (7) is arranged at the rear end of the second rotating shaft (21), a groove (17) is arranged above the second rotating shaft (21) on the outer surface of the rear end inside the bearing frame (6), a compression spring (20) is arranged at the upper end inside the groove (17) at the lower end of the compression spring (20), a connecting block (18) is arranged inside the groove (17) at the lower end of the compression spring (20), a first rotating shaft (19) is arranged at the rear end of the connecting block (18), a squeezing stick (8) is arranged at the rear end of the first rotating shaft (19), a supporting plate (12) is arranged on one side of the bearing frame (6) at the upper end of the bearing bottom plate (1, a transmission rod (14) penetrates through the inner side of the connecting rotating shaft (13), a mounting threaded cylinder (15) is arranged at the rear end of the transmission rod (14), a winding rod (11) is arranged on the inner side of the mounting threaded cylinder (15), and fixing threaded blocks (16) are arranged on the outer side of the winding rod (11) and the outer side of the mounting threaded cylinder (15); the water removing chamber (5) is arranged on the other side of the bearing frame (6) at the upper end of the bearing bottom plate (1), and a water removing fan is arranged in the water removing chamber (5).
2. The method for producing a biaxially oriented polypropylene film according to claim 1, wherein: two auxiliary water removal modules (22) are arranged at positions close to the inlet in the water removal chamber (5); the two dewatering modules are symmetrically distributed on the side walls of the two sides of the dewatering chamber (5); the auxiliary water removal module comprises a bracket (23), a push rod motor (24), a water driving plate (25) and a water absorption felt (26); one end of the push rod motor (24) is fixedly arranged on the side wall of the water removing chamber (5), and the other end of the push rod motor is fixedly connected to the side surface of the supporting rod; the support (23) is arranged into a T shape, and two protruding ends of the support (23) are respectively hinged with a water driving plate (25); the sum of the lengths of the two water repelling plates (25) is larger than the width value of the thick sheet, and the water absorbing felt (26) is arranged on the water repelling plates (25).
3. The method for producing a biaxially oriented polypropylene film according to claim 2, wherein: wherein the upper surface of the upper water repelling plate (25) is provided with a winding roller (27), and the lower surface of the lower water repelling plate (25) is provided with a unwinding roller (28); the winding roller (27) and the unwinding roller (28) are both driven by a rotating motor; two guide rollers are arranged at the corner of one side of the support (23) in the concave manner; one end of the water-absorbing felt (26) is connected to the winding roller (27), and the other end of the water-absorbing felt is connected to the unwinding roller (28) after sequentially passing through the two guide rollers.
4. The method for producing a biaxially oriented polypropylene film according to claim 2, wherein: through holes are formed in one end, far away from the water repelling plate (25), of the water repelling plate; an electromagnet (29) is inserted into the through hole; the electromagnet (29) changes the magnetic force direction, thereby realizing the opening and closing action between the two water catching plates (25).
5. The method for producing a biaxially oriented polypropylene film according to claim 4, wherein: a group of spray heads (30) are respectively arranged on the front side surface and the rear side surface of the bracket (23); the spray head (30) is connected with the air pump through an air pipe; a pipeline is wound on the outer wall of the extruder (2); the pipeline is communicated with the air pump; the air pump is used for sending the hot air overflowed from the extruder (2) into the spray head (30) through the pipeline and the air pipe and spraying the hot air out of the spray head (30).
6. The method for producing a biaxially oriented polypropylene film according to claim 1, wherein: the front end of the bearing bottom plate (1) is provided with a supporting block (9), the front end of a transmission rod (14) at the upper end of the supporting block (9) is provided with a driving motor (10), and the outer surface of the lower end of the driving motor (10) is fixedly connected with the outer surface of the front end of the bearing bottom plate (1) through the supporting block (9).
7. The method for producing a biaxially oriented polypropylene film according to claim 1, wherein: a water tank (4) is arranged on one side of a water removing chamber (5) on the outer surface of the upper end of the bearing bottom plate (1), a cooling tank (3) is arranged on one side of the water tank (4), and an extruder (2) is arranged on one side of the cooling tank (3).
8. The method for producing a biaxially oriented polypropylene film according to claim 1, wherein: the outer surface of the front end of the extrusion rod (8) is movably connected with the outer surface of the rear end of the connecting block (18) through a first rotating shaft (19), the outer surface of the upper end of the connecting block (18) is movably connected with the outer surface of the upper end of the inner part of the groove (17) through compression springs (20), and the number of the compression springs (20) is a plurality of groups.
9. The method for producing a biaxially oriented polypropylene film according to claim 1, wherein: the outer surface of the winding rod (11) is fixedly connected with the inner side outer surface of the mounting thread cylinder (15) through a fixing thread block (16), an internal thread is arranged on the inner side outer surface of the fixing thread block (16), an external thread is arranged on the outer surface of the mounting thread cylinder (15), and the internal thread of the fixing thread block (16) is meshed with the external thread of the mounting thread cylinder (15).
10. The method for producing a biaxially oriented polypropylene film according to claim 1, wherein: the outer surface of the front end of the mounting threaded cylinder (15) is fixedly connected with the outer surface of the rear end of the support plate (12) through a transmission rod (14), the outer surface of the transmission rod (14) is movably connected with the outer surface of the inner side of the support plate (12) through a connection rotating shaft (13), and the length of the outer diameter of the transmission rod (14) is the same as the length of the inner diameter of the connection rotating shaft (13).
CN202010886248.8A 2020-08-28 2020-08-28 Production method of polypropylene biaxially oriented film Withdrawn CN112092325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010886248.8A CN112092325A (en) 2020-08-28 2020-08-28 Production method of polypropylene biaxially oriented film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010886248.8A CN112092325A (en) 2020-08-28 2020-08-28 Production method of polypropylene biaxially oriented film

Publications (1)

Publication Number Publication Date
CN112092325A true CN112092325A (en) 2020-12-18

Family

ID=73758333

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010886248.8A Withdrawn CN112092325A (en) 2020-08-28 2020-08-28 Production method of polypropylene biaxially oriented film

Country Status (1)

Country Link
CN (1) CN112092325A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114654698A (en) * 2020-12-23 2022-06-24 河南惠强新能源材料科技股份有限公司 Setting device for battery diaphragm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114654698A (en) * 2020-12-23 2022-06-24 河南惠强新能源材料科技股份有限公司 Setting device for battery diaphragm

Similar Documents

Publication Publication Date Title
CN110295404B (en) Automatic production equipment and method for plane receiving type centrifugal spinning
CN112092325A (en) Production method of polypropylene biaxially oriented film
CN108221230B (en) Textile dyeing device
CN112481866B (en) Textile cloth wetting device for spinning
CN212103270U (en) Steam humidifying mechanism for textile fabric weaving machine
CN208995719U (en) A kind of spray equipment applied to forming machine
CN220444663U (en) Stable wire drawing machine
CN218463018U (en) Carbon fiber round pipe rolling equipment
CN219631800U (en) Double-channel cooling device of precoating film machine
CN114589053B (en) Forming equipment and method for three-dimensional grid core material
CN216448551U (en) Cable core water trap
CN113776287B (en) Drying device with airflow drying function for acetaminophen production and method thereof
CN112048852B (en) Humidification method for glass fiber cloth inspection
CN212558645U (en) Water jet loom coiling mechanism
CN220846602U (en) Prewetting dust-free cloth production device
CN217817761U (en) Drying equipment for fiber production
CN218821311U (en) Drying equipment
CN110711668A (en) Coiled material processing production line
CN220871358U (en) Child base drying device is used in production of modified asphalt waterproofing membrane
CN221349635U (en) Drying device is used in carpet processing
CN221875899U (en) Plastic sheet extruder rolling controlling means
CN211026895U (en) Coiled material processing production line
CN221584483U (en) Cooling device is used in plastic slab production
CN115652603B (en) Coating device for coating cloth production
CN114987841B (en) PUR (polyurethane) glue-transferring coated wall-clicking device and application method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20201218

WW01 Invention patent application withdrawn after publication