CN111469387A - Bidirectional stretching processing method for polyurethane plastic film - Google Patents
Bidirectional stretching processing method for polyurethane plastic film Download PDFInfo
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- CN111469387A CN111469387A CN202010299666.7A CN202010299666A CN111469387A CN 111469387 A CN111469387 A CN 111469387A CN 202010299666 A CN202010299666 A CN 202010299666A CN 111469387 A CN111469387 A CN 111469387A
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- stretching
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- plastic film
- stretching mechanism
- polyurethane plastic
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- 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
- B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
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- 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
- B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
- B29C55/165—Apparatus therefor
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- 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
- B29C55/20—Edge clamps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention relates to a polyurethane plastic film biaxial stretching processing method, which comprises a feeding roller, a placing platform, a first stretching mechanism, a second stretching mechanism, a discharging roller and a driving mechanism, wherein the two sides of the placing platform are respectively provided with the first stretching mechanism and the second stretching mechanism, the first stretching mechanism, the second stretching mechanism and the placing platform are fixed through bolts, the first stretching mechanism and the second stretching mechanism are two components with the same structure, the top of the first stretching mechanism is provided with the driving mechanism, one end of the placing platform is provided with the feeding roller, the other end of the placing platform is provided with the discharging roller, a first protective shell and a second protective shell are respectively and correspondingly arranged on the upper end surfaces of the second stretching mechanism and the first stretching mechanism through bolts, the top of the second protective shell is provided with the driving motor, the invention can carry out continuous biaxial stretching work on a coiled thick sheet film, the stretching efficiency is high, and the stretching effect is good.
Description
Technical Field
The invention relates to the technical field of processing methods of polyurethane plastic films, in particular to a bidirectional stretching processing method of a polyurethane plastic film.
Background
Plastic films are films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging, and used as film coatings. Polyurethane plastic film is one of many plastic films. There are many methods for forming polyurethane plastic films, and biaxially oriented films are the focus of attention. The bidirectional stretching film is prepared by heating and melting high plant resin by an extruder, extruding the high plant resin into a thick sheet, and stretching the thick sheet by a certain multiple under the action of external force to obtain an ideal plastic film.
The existing polyurethane plastic film biaxial tension processing method in the market has the following problems in the operation process: a. when the traditional bidirectional stretching processing method of the polyurethane plastic film is used for stretching the extruded thick film, namely the stretching process adopts independent setting, namely the coiled thick film needs to be independently cut and then independently stretched, namely the coiled thick film cannot be continuously processed effectively, so that the stretching efficiency of the device is low; b. when the polyurethane plastic film biaxial stretching processing method is used for stretching a thick film, the contact area between the clamping device used for being in contact with the thick film and the film is small, namely the clamping device cannot effectively and completely cover the surface of the film, so that when the thick film is stretched, the stress on two sides of the film is uneven, the local area on the surface of the thick film cannot be stretched in place, and the stretching effect of the film is poor.
Disclosure of Invention
In order to solve the above problems, the present invention provides a biaxial stretching processing method for a polyurethane plastic film, which can solve the problems mentioned in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: the bidirectional stretching processing method of the polyurethane plastic film uses a bidirectional stretching processing device of the polyurethane plastic film, the bidirectional stretching processing device of the polyurethane plastic film comprises a feeding roller, a placing platform, a first stretching mechanism, a second stretching mechanism, a discharging roller and a driving mechanism, and the specific method when the bidirectional stretching processing device of the polyurethane plastic film is adopted to stretch the polyurethane plastic film is as follows:
s1, thick sheet feeding: manually placing one end of a coiled thick film which is obtained by heating, melting and extruding high plant resin through an extruder on the upper end surface of a feed roller, controlling the feed roller to enter a working state, and driving the thick film to enter a first stretching mechanism and a second stretching mechanism through the rotation of the feed roller;
s2, driving device: manually controlling the driving mechanism to enter a working state, and driving the first stretching mechanism (3) and the second stretching mechanism to enter the working state through the driving mechanism;
s3, biaxial stretching: performing bidirectional stretching work on the thick film through a first stretching mechanism and a second stretching mechanism;
s4, film discharging: the thick film is processed by S3 to form a polyurethane plastic film, the formed polyurethane plastic film enters the upper end of the discharge roller, the discharge roller is manually controlled to work, the polyurethane plastic film is driven by the discharge roller to be separated from the first stretching mechanism and the second stretching mechanism, and the film discharging process is realized;
a first stretching mechanism and a second stretching mechanism are respectively installed on two sides of the placing platform, the first stretching mechanism and the second stretching mechanism are fixed with the placing platform through bolts, the first stretching mechanism and the second stretching mechanism are two components with the same structure, a driving mechanism is arranged at the top of the first stretching mechanism, a feeding roller is installed at one end of the placing platform, and a discharging roller is installed at the other end of the placing platform;
actuating mechanism includes driving motor, the driving shaft, the driving pulley, driving belt, the driven shaft, driven pulley, drive gear, first protective housing and second protective housing correspond the up end of installing at second tensile mechanism and first tensile mechanism respectively through the bolt respectively, driving motor is installed at the top of second protective housing, driving motor's output shaft end is connected with the driving shaft, the outer wall welding of driving shaft has the driving pulley, the outer wall cup joint of driving pulley has driving belt, the internally mounted of first protective housing has the axle sleeve, the inside grafting of axle sleeve has the driven shaft, the outer wall welding of driven shaft has driven pulley, and driven pulley cup joints the other end at driving belt, the other end of driving shaft and driven shaft is located the inside of first tensile mechanism and second tensile mechanism respectively, and the one end department that driving shaft and driven shaft are located first tensile mechanism and second tensile mechanism all welds and drives the welding of driving shaft and driven shaft And a moving gear.
First stretching mechanism includes fixed shell, location roller, conveyer belt, centre gripping subassembly, V type guide rail, fixed strip and feed chute, and fixed shell passes through the bolt fastening at place platform's up end, and the inside at fixed shell is installed to the location roller, and the conveyer belt has been cup jointed to the lateral wall of location roller, and one side of conveyer belt is connected with the centre gripping subassembly, and the opposite side and the drive gear of conveyer belt are connected, and the top of centre gripping subassembly is provided with the fixed strip, and the up end of fixed strip passes through the dead lever and links to each other with fixed shell's inner wall, and both ends, just two about V type guide rail passes through the bolt fastening at fixed shell's inside V type guide rail cup joints respectively at the upper and lower both ends of conveyer belt.
Further, the centre gripping subassembly includes first backup pad, L type supporting rod, first grip block, supporting spring, first rack, connecting gear, the second rack, the second grip block, second backup pad and contact element, the lateral wall at the conveyer belt is installed respectively to first backup pad and second backup pad, L type supporting rod has all been welded to the lower terminal surface of first backup pad and the up end of second backup pad, L type supporting rod outer wall that is located first backup pad one end has cup jointed first grip block, L type supporting rod outer wall that is located second backup pad one end has cup jointed the second grip block, the junction of first grip block and second grip block and L type supporting rod all is provided with supporting spring, the mounting bracket is installed to the lateral wall of first backup pad, connecting gear is installed to the bottom of mounting bracket, one side meshing of connecting gear has first rack, the opposite side meshing of connecting gear has the second rack, the top of first rack links to each other with the outer wall of first grip block through the connecting rod, the bottom of second rack passes through the connecting rod and links to each other with the outer wall of second grip block, the one end of first grip block and the contact element all are provided with contact element.
Furthermore, a rectangular groove is formed in the center of one side of the conveying belt, a connecting tooth groove is formed in the rectangular groove, and one side of the conveying belt is meshed with the driving gear through the connecting tooth groove.
Furthermore, an extrusion block is welded on the lower end face of the fixing strip, and an arc chamfer is formed in one end of the extrusion block.
Furthermore, steel balls are embedded into the tops of the first clamping block and the second clamping block at equal intervals, and rectangular grooves are formed in the joints of the first clamping block and the second clamping block and the L-type bearing rod.
Further, the contact unit comprises an installation shell, a positioning insertion rod, a rubber pad, a connecting bottom plate, a movable sleeve, an extrusion roller shaft, a support rod, a silica gel belt and a winding roller, the installation shell is fixed at one end of the first clamping block through spot welding, the bottom of the installation shell is provided with the connecting bottom plate, the lower end face of the connecting bottom plate is bonded with the rubber pad, the positioning insertion rod is welded at the center of the upper end face of the connecting bottom plate, the outer wall of the positioning insertion rod is sleeved with the movable sleeve, two ends of the movable sleeve are hinged with the support rod, the bottom of the support rod is movably provided with the extrusion roller shaft, the top of the positioning insertion rod penetrates through the installation shell and the first clamping block, a push rod is arranged right above the movable sleeve, the top of the push rod is welded on the inner wall of the installation shell, the outer wall of the positioning insertion rod is sleeved with a, the other end of the silica gel belt is embedded into two ends of the bottom of the rubber pad, and the inner wall of the silica gel belt is tightly leaned against the outer wall of the extrusion roll shaft.
The invention has the beneficial effects that:
1. according to the bidirectional stretching processing method for the polyurethane plastic film, the stretching mechanism can be used for integrally stretching the rolled thick film, namely, the bidirectional stretching work for the thick film can be realized in the process of unreeling and reeling the thick film, the independent processing is not needed like the traditional bidirectional stretching processing method for the polyurethane plastic film, the stretching efficiency of the film is effectively increased, meanwhile, the bidirectional stretching work for the film is synchronously performed under the action of the same driving mechanism, and the same bidirectional stretching degree of the film is effectively ensured.
2. According to the processing method for the bidirectional stretching of the polyurethane plastic film, provided by the invention, when the clamping framework clamps the film, the deformable contact unit acts on the surface of the film, so that the two stretched sides of the film are completely covered by the contact unit, the uniform stress on the two sides of the film is ensured in the stretching process, the situation that the local stretching of the two side areas of the film is not in place is avoided, and the bidirectional stretching effect of the film is effectively ensured.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic perspective view of the overall device of the present invention;
FIG. 3 is a cross-sectional view of a first stretching mechanism of the present invention;
FIG. 4 is a schematic view of the overall construction of the clamping assembly of the present invention;
FIG. 5 is a bottom view of the first clamp block of the present invention;
FIG. 6 is a cross-sectional view of a contact unit of the present invention;
FIG. 7 is a cross-sectional view of the drive mechanism of the present invention;
FIG. 8 is a partial schematic view of a fastening strip of the present invention;
fig. 9 is a partial structural schematic view of the first clamping block of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to 1-9, a polyurethane plastic film biaxial stretching processing method uses a polyurethane plastic film biaxial stretching processing device, the polyurethane plastic film biaxial stretching processing device comprises a feeding roller 1, a placing platform 2, a first stretching mechanism 3, a second stretching mechanism 4, a discharging roller 5 and a driving mechanism 6, and the specific method when the polyurethane plastic film biaxial stretching processing device is adopted to stretch a polyurethane plastic film is as follows:
s1, thick sheet feeding: manually placing one end of a coiled thick film which is obtained by heating, melting and extruding high plant resin through an extruder on the upper end surface of a feed roller 1, controlling the feed roller 1 to enter a working state, and driving the thick film to enter a first stretching mechanism 3 and a second stretching mechanism 4 through the rotation of the feed roller 1;
s2, driving device: manually controlling the driving mechanism 6 to enter a working state, and driving the first stretching mechanism 3 and the second stretching mechanism 4 to enter the working state through the driving mechanism 6;
s3, biaxial stretching: performing bidirectional stretching work on the thick film through a first stretching mechanism 3 and a second stretching mechanism 4;
s4, film discharging: the thick film is processed by S3 to form a polyurethane plastic film, the formed polyurethane plastic film enters the upper end of the discharge roller 5, the discharge roller 5 is manually controlled to work, the discharge roller 5 drives the polyurethane plastic film to be separated from the first stretching mechanism 3 and the second stretching mechanism 4, and the film discharging process is realized;
the two sides of the placing platform 2 are respectively provided with a first stretching mechanism 3 and a second stretching mechanism 4, the first stretching mechanism 3, the second stretching mechanism 4 and the placing platform 2 are fixed through bolts, the first stretching mechanism 3 and the second stretching mechanism 4 are members with the same structure, the top of the first stretching mechanism 3 is provided with a driving mechanism 6, one end of the placing platform 2 is provided with a feeding roller 1, the other end of the placing platform 2 is provided with a discharging roller 5, when the polyurethane plastic film to be processed is manually placed at the upper end of the feeding roller 1 and enters the first stretching mechanism 3 and the second stretching mechanism 4 under the driving of the feeding roller 1, meanwhile, the first stretching mechanism 3 and the second stretching mechanism 4 are manually driven through the driving mechanism 6 to enter a working state, and the two sides of the polyurethane plastic film are stretched bidirectionally through the first stretching mechanism 3 and the second stretching mechanism 4, the stretched polyurethane plastic film enters the upper end of the discharging roller 5.
The driving mechanism 6 comprises a driving motor 61, a driving shaft 62, a driving belt pulley 63, a driving belt 64, a driven shaft 65, a driven belt pulley 66, a driving gear 67, a first protective shell 68 and a second protective shell 69, wherein the first protective shell 68 and the second protective shell 69 are respectively and correspondingly installed on the upper end surfaces of the second stretching mechanism 4 and the first stretching mechanism 3 through bolts, the driving motor 61 is installed at the top of the second protective shell 69, the output shaft end of the driving motor 61 is connected with the driving shaft 62, the driving belt pulley 63 is welded on the outer wall of the driving shaft 62, the driving belt 64 is sleeved on the outer wall of the driving belt 63, a shaft sleeve is installed inside the first protective shell 68, the driven shaft 65 is inserted inside the shaft sleeve, the driven belt pulley 66 is welded on the outer wall of the driven shaft 65, the driven belt pulley 66 is sleeved on the other end of the driving belt 64, and the other ends of the driving shaft 62 and the driven shaft 65, and driving shaft 62 and driven shaft 65 are located the one end department of first stretching mechanism 3 and second stretching mechanism 4 and all have welded drive gear 67, and during concrete work, manual control driving motor 61 work drives driving shaft 62 through driving motor 61 and rotates, and driving shaft 62 rotates and drives driving pulley 63 promptly and rotate to drive driven pulley 66 that the drive belt 64 other end is connected and rotate under the effect of drive belt 64, and then drive driven shaft 65 at the axle sleeve internal rotation through driven pulley 66, realize two drive gear 67's synchronous rotation makes first stretching mechanism 3 and second stretching mechanism 4 enter into operating condition.
The rectangular channel has been seted up to one side central point of conveyer belt 33, and the inside of rectangular channel is provided with connects tooth's socket 331, and one side of conveyer belt 33 is connected with drive gear 67 meshing through connecting tooth's socket 331, through drive gear 67 with connect mutually supporting of tooth's socket 331, guarantee that a tensile mechanism 3 and second tensile mechanism 4 can normal operating under actuating mechanism 6's effect.
The first stretching mechanism 3 comprises a fixed shell 31, a positioning roller shaft 32, a conveying belt 33, a clamping assembly 34, a V-shaped guide rail 35, a fixed strip 36 and a feeding groove 37, the fixed shell 31 is fixed on the upper end surface of the placing platform 2 through bolts, the positioning roller shaft 32 is installed inside the fixed shell 31, the conveying belt 33 is sleeved on the outer side wall of the positioning roller shaft 32, one side of the conveying belt 33 is connected with the clamping assembly 34, the other side of the conveying belt 33 is connected with a driving gear 67, the fixed strip 36 is arranged above the clamping assembly 34, the upper end surface of the fixed strip 36 is connected with the inner wall of the fixed shell 31 through a fixed rod, the V-shaped guide rail 35 is fixed at the upper end and the lower end inside the fixed shell 31 through bolts, the two V-shaped guide rails 35 are respectively sleeved at the upper end and the lower end of the conveying belt 33, the feeding groove 37 is formed in the center position of one side, the conveying belt 33 rotates in the outer wall of the positioning roller shaft 32 and the V-shaped guide rail 35, the conveying belt 33 moves to drive the clamping component 34 connected to one side of the conveying belt to move, when the clamping component 34 moves to a position right below the fixing strip 36, the fixing strip 36 generates a certain extrusion force on the clamping component 34, so that the clamping component 34 clamps the upper end surface and the lower end surface of the polyurethane plastic film, clamps the polyurethane plastic film under the action of the clamping component 34 and moves together with the movement track of the conveying belt 33, and because the conveying belt 33 moves under the action of the V-shaped guide rail 35, one end of the conveying belt 33 located at the feeding roller 1 and one end of the discharging roller 5 have a certain height difference, namely, when the polyurethane plastic film moves together with the conveying belt 33 under the action of the clamping component 34, one side of the polyurethane plastic film is stretched, and according to the above principle, the other side of the polyurethane plastic film is stretched by the second stretching mechanism 4 at, the realization is to the biaxial stretching of polyurethane plastic film promptly, and this biaxial stretching mode can act on the tensile operation of whole volume polyurethane plastic film for whole tensile action is gone on in the polyurethane plastic film transportation, and processing continuation is strong, and machining efficiency is high.
The lower end face of the fixed strip 36 is welded with the extrusion block 361, one end of the extrusion block 361 is provided with an arc chamfer, the extrusion block 361 is located on the lower end face of the fixed strip 36, namely, a certain height difference exists between the lower end face of the extrusion block 361 and the upper end face of the fixed strip 36, and when the top of the first clamping block 343 enters the lower end face of the extrusion block 361 along the arc chamfer, the lower end face of the extrusion block 361 can generate relative extrusion force on the top of the first clamping block 343.
The clamping assembly 34 includes a first supporting plate 341, a L-type supporting rod 342, a first clamping block 343, a supporting spring 344, a first rack 345, a connecting gear 346, a second rack 347, a second clamping block 348, a second supporting plate 349 and a contact unit 340, the first supporting plate 341 and the second supporting plate 349 are respectively installed on the side wall of the conveying belt 33, a L-type supporting rod 342 is welded on the lower end face of the first supporting plate 341 and the upper end face of the second supporting plate 349, a first clamping block 343 is sleeved on the outer wall of a L-type supporting rod 342 at one end of the first supporting plate 341, a second clamping block 348 is sleeved on the outer wall of a L-type supporting rod 342 at one end of the second supporting plate 349, a supporting spring 344 is arranged at the joint of the first clamping block 343 and the second clamping block 348 and the L-type supporting rod 342, a mounting rack 348 is installed on the side wall of the first supporting plate 341, a connecting gear 346 is installed at the bottom of the mounting rack 346, a connecting gear 346 is engaged with a first rack 345, the other side of the clamping block 346, a second rack 345 is engaged with a second rack 347 engaged with a second rack 346, the other side of the rack 345, the rack 345 is engaged with a second clamping block 343, a second rack 347, the rack 347, when the clamping block 343 and the clamping block 343, the clamping block 343 is moved up-down, the clamping block 343 and the clamping block 343, the clamping block 343 is moved along the clamping block 343, the clamping block 343 and the clamping block 343, the clamping block 343 is moved along the clamping block 343, the clamping block 343 and the clamping block 343, the clamping block.
The steel balls 3431 are embedded in the tops of the first clamping block 343 and the second clamping block 348 at equal intervals, when the top of the first clamping block 343 enters the lower end face of the extrusion block 361 along the arc chamfer, the steel balls 3431 firstly contact with the arc chamfer, so that the friction between the top of the first clamping block 343 and the arc chamfer is rolling friction, the abrasion at the top corner of the first clamping block 343 is effectively reduced, a rectangular groove 3432 is formed at the joint of the first clamping block 343, the second clamping block 348 and the L-type supporting rod 342, the position of the first clamping block 343 is limited by the rectangular groove 3432, the first clamping block 343 is prevented from rotating relative to the L-type supporting rod 342, namely, the contact unit 340 connected with the bottom of the first clamping block 343 is prevented from rotating on the surface of the polyurethane plastic film, the polyurethane plastic film is prevented from being damaged, and the two sides of the stretched polyurethane plastic film are effectively guaranteed to be complete and undamaged.
The contact unit 340 comprises an installation shell 3401, a positioning inserted bar 3402, a rubber pad 3403, a connecting bottom plate 3404, a movable sleeve 3405, an extrusion roll shaft 3406, a support rod 3407, a silica gel tape 3408 and a winding roller 3409, wherein the installation shell 3401 is fixed at one end of a first clamping block 343 by spot welding, the bottom of the installation shell 3401 is provided with the connecting bottom plate 3404, the lower end face of the connecting bottom plate 3404 is bonded with the rubber pad 3403, the central position of the upper end face of the connecting bottom plate 3404 is welded with the positioning inserted bar 3402, the outer wall of the positioning inserted bar 3402 is sleeved with the movable sleeve 3405, two ends of the movable sleeve 3405 are hinged with the support rod 3407, the bottom of the support rod 3407 is movably provided with the extrusion roll shaft 3406, the top of the positioning inserted bar 3402 penetrates through the installation shell 3401 and the inside the first clamping block 343, a push rod is arranged right above the movable sleeve 3405, the top of the push rod is welded on, the winding rollers 3409 are arranged at two ends of the top of the installation shell 3401, a torsional spring is arranged at the joint of the winding roller 3409 and the installation shell 3401, a silica gel strip 3408 is wound on the outer wall of the winding roller 3409, the other end of the silica gel strip 3408 is embedded at two ends of the bottom of the rubber pad 3403, and the inner wall of the silica gel strip 3408 is tightly leaned against the outer wall of the extrusion roller shaft 3406. during the specific work, when the two contact units 340 move to the upper end surface and the lower end surface of the polyurethane plastic film in opposite directions, the rubber pad 3403 adhered to the bottom of the connecting bottom plate 3404 is tightly attached to the surface of the polyurethane plastic film, the positioning insertion rod 3402 vertically moves upwards relative to the installation shell 3401, namely, the movable sleeve 3405 vertically moves downwards relative to the positioning insertion rod 3402 under the action of the push rod, namely, the distance between the top of the connecting bottom plate 3404 and the installation shell 3401 is shortened, and the included angle between the two support rods 3407 is increased under the push of, the other end of silica gel area 3408 separates with wind-up roll 3409, even make silica gel area 3408 hug closely on polyurethane plastic film's surface at silica gel area 3408's lower terminal surface under the extrusion of extrusion roller shaft 3406, thereby the effectual area of contact who increases contact unit 340 and polyurethane plastic film's surface, make polyurethane plastic film's both sides all covered by contact unit 340, make polyurethane plastic film both sides atress even, the tensile effect of polyurethane plastic film both sides is the same, thereby the effectual condition of avoiding polyurethane plastic film both sides local area stretching not in place takes place.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a polyurethane plastic film biaxial stretching processingequipment, its used a polyurethane plastic film biaxial stretching processingequipment, this polyurethane plastic film biaxial stretching processingequipment includes feed roll (1), place the platform (2), first drawing mechanism (3), second drawing mechanism (4), discharge roll (5) and actuating mechanism (6), its characterized in that: the specific method for stretching the polyurethane plastic film by adopting the bidirectional stretching processing device for the polyurethane plastic film is as follows:
s1, thick sheet feeding: manually placing one end of a coiled thick film which is obtained by heating, melting and extruding high plant resin through an extruder on the upper end surface of a feed roller (1), controlling the feed roller (1) to enter a working state, and driving the thick film to enter a first stretching mechanism (3) and a second stretching mechanism (4) through the rotation of the feed roller (1);
s2, driving device: manually controlling the driving mechanism (6) to enter a working state, and driving the first stretching mechanism (3) and the second stretching mechanism (4) to enter the working state through the driving mechanism (6);
s3, biaxial stretching: the thick film is subjected to bidirectional stretching work through a first stretching mechanism (3) and a second stretching mechanism (4);
s4, film discharging: the thick film is processed by S3 to form a polyurethane plastic film, the formed polyurethane plastic film enters the upper end of the discharge roller (5), the discharge roller (5) is manually controlled to work, the polyurethane plastic film is driven by the discharge roller (5) to be separated from the first stretching mechanism (3) and the second stretching mechanism (4), and the film discharging process is realized;
a first stretching mechanism (3) and a second stretching mechanism (4) are respectively installed on two sides of the placing platform (2), the first stretching mechanism (3) and the second stretching mechanism (4) are fixed with the placing platform (2) through bolts, the first stretching mechanism (3) and the second stretching mechanism (4) are two components with the same structure, a driving mechanism (6) is arranged on the top of the first stretching mechanism (3), a feeding roller (1) is installed at one end of the placing platform (2), and a discharging roller (5) is installed at the other end of the placing platform (2);
the driving mechanism (6) comprises a driving motor (61), a driving shaft (62), a driving belt pulley (63), a driving belt (64), a driven shaft (65), a driven belt pulley (66), a driving gear (67), a first protective shell (68) and a second protective shell (69), wherein the first protective shell (68) and the second protective shell (69) are respectively and correspondingly installed on the upper end surfaces of the second stretching mechanism (4) and the first stretching mechanism (3) through bolts, the driving motor (61) is installed at the top of the second protective shell (69), the output shaft end of the driving motor (61) is connected with the driving shaft (62), the driving belt pulley (63) is welded on the outer wall of the driving shaft (62), the driving belt (64) is sleeved on the outer wall of the driving belt pulley (63), a shaft sleeve is installed inside the first protective shell (68), the driven shaft (65) is inserted inside the shaft sleeve, the outer wall welding of driven shaft (65) has driven pulley (66), and driven pulley (66) cup joints the other end at drive belt (64), and the other end of driving shaft (62) and driven shaft (65) is located the inside of first drawing mechanism (3) and second drawing mechanism (4) respectively, and the one end department that driving shaft (62) and driven shaft (65) are located first drawing mechanism (3) and second drawing mechanism (4) all welds drive gear (67).
The first stretching mechanism (3) comprises a fixed shell (31), a positioning roller shaft (32), a conveying belt (33), a clamping assembly (34), V-shaped guide rails (35), a fixing strip (36) and a feeding groove (37), wherein the fixed shell (31) is fixed on the upper end face of the placing platform (2) through bolts, the positioning roller shaft (32) is installed inside the fixed shell (31), the conveying belt (33) is sleeved on the outer side wall of the positioning roller shaft (32), the clamping assembly (34) is connected to one side of the conveying belt (33), the other side of the conveying belt (33) is connected with a driving gear (67), the fixing strip (36) is arranged above the clamping assembly (34), the upper end face of the fixing strip (36) is connected with the inner wall of the fixed shell (31) through a fixing rod, the V-shaped guide rails (35) are fixed at the upper end and the lower end of the inside of the fixed shell (31) through bolts, and the two V-shaped guide rails (35), a feed chute (37) is arranged at the center of one side of the fixed shell (31).
2. The biaxial stretching processing method for the polyurethane plastic film according to claim 1, wherein the clamping assembly (34) comprises a first supporting plate (341), a L-type supporting rod (342), a first clamping block (343), a supporting spring (344), a first rack (345), a connecting gear (346), a second rack (347), a second clamping block (348), a second supporting plate (349) and a contact unit (340), the first supporting plate (341) and the second supporting plate (349) are respectively installed on the side wall of the conveyor belt (33), the lower end surface of the first supporting plate (341) and the upper end surface of the second supporting plate (349) are respectively welded with the L-type supporting rod (342), the first clamping block (343) is sleeved on the outer wall of the L-type supporting rod (342) at one end of the first supporting plate (341), the second clamping block (342) is sleeved on the outer wall of the L-type supporting rod (342) at one end of the second supporting plate (348), the second clamping block (346) is sleeved on the outer wall of the supporting rod (342), the first clamping block (343) and the second clamping block (343) are connected with the gear (348), the side wall of the bottom of the gear (343) through the side wall of the first clamping block (345) which is connected with the gear (344), the bottom of the first supporting rod (345), the first clamping block (345) is installed on which is connected with the side wall of the rack (344), the gear (346), the bottom of the first supporting rod (348), the side wall of the first clamping block (345), the first supporting rod (345) and the side wall of the bottom of the second supporting rod (346), the bottom (346) which is connected.
3. The biaxial stretching processing method of a polyurethane plastic film as claimed in claim 1, characterized in that: the rectangular groove has been seted up to one side central point of conveyer belt (33), and the inside of rectangular groove is provided with connects tooth's socket (331), and one side of conveyer belt (33) is connected with drive gear (67) meshing through connecting tooth's socket (331).
4. The biaxial stretching processing method of a polyurethane plastic film as claimed in claim 1, characterized in that: the lower end face of the fixed strip (36) is welded with an extrusion block (361), and one end of the extrusion block (361) is provided with an arc chamfer.
5. The biaxial stretching processing method of the polyurethane plastic film as claimed in claim 2, wherein steel balls (3431) are embedded in the tops of the first holding block (343) and the second holding block (348) at equal intervals, and rectangular grooves (3432) are formed at the joints of the first holding block (343) and the second holding block (348) and the L-shaped support rods (342).
6. The biaxial stretching processing method of a polyurethane plastic film as claimed in claim 2, characterized in that: the contact unit (340) comprises an installation shell (3401), a positioning inserted bar (3402), a rubber pad (3403), a connecting bottom plate (3404), a movable sleeve (3405), an extrusion roller shaft (3406), a support rod (3407), a silica gel belt (3408) and a winding roller (3409), the installation shell (3401) is fixed at one end of the first clamping block (343) through spot welding, the connecting bottom plate (3404) is arranged at the bottom of the installation shell (3401), the rubber pad (3403) is bonded at the lower end face of the connecting bottom plate (3404), the positioning inserted bar (3402) is welded at the central position of the upper end face of the connecting bottom plate (3404), the movable sleeve (3405) is sleeved on the outer wall of the positioning inserted bar (3402), the support rods (3407) are hinged at two ends of the movable sleeve (3405), the extrusion roller shaft (3406) is movably mounted at the bottom of the support rod (3407), and the top of the positioning inserted bar (3402) penetrates through the installation shell (340, be provided with the push rod directly over activity sleeve (3405), and the top welding of push rod is at the inner wall of installation shell (3401), reset spring has been cup jointed to the outer wall of location inserted bar (3402), wind-up roll (3409) are installed at the top both ends of installation shell (3401), the outer wall rolling of wind-up roll (3409) has silica gel area (3408), the other end embedding of silica gel area (3408) is at the bottom both ends of rubber pad (3403), and the inner wall of silica gel area (3408) is tightly leaned on the outer wall at extrusion roller axle (3406).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010299666.7A CN111469387A (en) | 2020-04-16 | 2020-04-16 | Bidirectional stretching processing method for polyurethane plastic film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010299666.7A CN111469387A (en) | 2020-04-16 | 2020-04-16 | Bidirectional stretching processing method for polyurethane plastic film |
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| CN111469387A true CN111469387A (en) | 2020-07-31 |
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| CN202010299666.7A Withdrawn CN111469387A (en) | 2020-04-16 | 2020-04-16 | Bidirectional stretching processing method for polyurethane plastic film |
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| CN113001855A (en) * | 2021-03-03 | 2021-06-22 | 浙江世鼎橡胶工业有限公司 | Rolling machine is used in production of sealed diaphragm |
| CN117048031A (en) * | 2023-10-10 | 2023-11-14 | 龙华相位新材料(绵阳)股份有限公司 | Optical film stretching device and stretching method |
| CN118358154A (en) * | 2024-06-18 | 2024-07-19 | 扬州博恒新能源材料科技有限公司 | PP film biaxial stretching former |
| CN118596540A (en) * | 2024-06-21 | 2024-09-06 | 扬州博恒新能源材料科技有限公司 | A membrane stretching device |
| CN118991012A (en) * | 2024-09-26 | 2024-11-22 | 江苏蜀联汉新材料科技有限公司 | Building waterproof coiled material manufacturing equipment and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118991012A (en) * | 2024-09-26 | 2024-11-22 | 江苏蜀联汉新材料科技有限公司 | Building waterproof coiled material manufacturing equipment and manufacturing method thereof |
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