CN113997478B - Blown film unit for producing blown films - Google Patents
Blown film unit for producing blown films Download PDFInfo
- Publication number
- CN113997478B CN113997478B CN202111301076.4A CN202111301076A CN113997478B CN 113997478 B CN113997478 B CN 113997478B CN 202111301076 A CN202111301076 A CN 202111301076A CN 113997478 B CN113997478 B CN 113997478B
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- film
- flow channel
- box
- wall
- blown
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- 230000007246 mechanism Effects 0.000 claims abstract description 56
- 238000007599 discharging Methods 0.000 claims abstract description 50
- 238000003825 pressing Methods 0.000 claims abstract description 21
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 239000002356 single layer Substances 0.000 claims abstract description 8
- 238000000071 blow moulding Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 15
- 238000009826 distribution Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002985 plastic film Substances 0.000 description 8
- 229920006255 plastic film Polymers 0.000 description 8
- 238000007664 blowing Methods 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000010096 film blowing Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
- B29C43/146—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making multilayered articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/26—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length in several steps
- B29C43/265—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length in several steps for making multilayered articles
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/46—Rollers
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a blown film unit for manufacturing blown films, which relates to the technical field of film production and comprises a film discharging mechanism, a film combining box and a pressing mechanism, wherein the film combining box is arranged on a working floor through a supporting frame, five groups of film discharging mechanisms are arranged at the bottom of the film combining box and are used for carrying out blow molding treatment on annular films, a pair of rolling rollers are arranged at the top of the film discharging mechanism and are rotatably arranged on the bottom wall of the film combining box, a driving shaft of the rolling rollers is connected with a motor, five groups of flow channels are formed in the film combining box, the five groups of flow channels are respectively positioned right above the five groups of film discharging mechanisms, a single-layer film blown by the film discharging mechanism is led into corresponding flow channels through the rolling rollers, a second flow channel, a third flow channel and a first flow channel are communicated together, a fourth flow channel, a fifth flow channel are also communicated with the first flow channel, a pair of pressing mechanism is arranged at the top of the film combining box, and the centers of the two groups of pressing mechanisms are positioned right above the first flow channel.
Description
Technical Field
The invention relates to the technical field of plastic film production, in particular to a blown film unit for manufacturing a blown film.
Background
Plastic film blowing, also known as flat folded film tube extrusion or blown film extrusion, is one of the primary methods of producing plastic films. Adding plastic into an extruder, melting, extruding into a cylinder (tube) from an annular gap of a front port die, introducing compressed air into a central hole of a core rod of a machine head, blowing the cylinder into a bubble tube shape (generally 2-3 times of blowing), stretching the longitudinal and transverse times to obtain a bubble tube with a certain blowing multiple, cooling by an outer air ring (sometimes adding internal cooling), then entering a guide clamping plate and a traction clamping roller to flatten the bubble tube, preventing air in the bubble tube from leaking out to maintain the required constant blowing pressure, flattening the bubble tube to form a flat-folded double-layer film, and finally entering a coiling device for coiling.
The existing blown film machine supports the annular film through gas, but the ductility of plastic films configured by different materials is different, so that when different plastics are subjected to film blowing, the plastic barrels are required to be supported for better control, if the introduced gas is too much, the annular film is broken, if the input gas is less, the annular film cannot be supported, and the volume of the gas can be changed continuously due to the change of the temperature inside the annular film, so that the gas quantity is inconvenient to control.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a blown film unit for manufacturing a blown film, which is more convenient to adjust.
In order to achieve the above purpose, the present invention provides the following technical solutions: the plastic film blowing machine comprises a film discharging mechanism, a film closing box and a pressing mechanism, wherein the film closing box is arranged on the working ground through a supporting frame, five groups of film discharging mechanisms are arranged at the bottom of the film closing box, the film discharging mechanism performs blow molding treatment on an annular film, a pair of pressing rollers are arranged at the top of the film discharging mechanism, the pressing rollers are rotatably arranged on the bottom wall of the film closing box, a driving shaft of the pressing rollers is connected with a motor, a first runner, a second runner, a third runner, a fourth runner and a fifth runner are simultaneously arranged in the film closing box, the first runner, the second runner, the third runner, the fourth runner and the fifth runner are respectively arranged right above the five groups of film discharging mechanisms, single-layer films blown by the film discharging mechanisms are led into corresponding runners through the pressing rollers, the second runner, the third runner and the first runner are communicated together, the fourth runner and the fifth runner are also communicated with the first runner, the top of the film closing box is simultaneously provided with a pair of pressing mechanisms, and the centers of the two groups of pressing mechanisms are arranged right above the first runner.
As a further scheme of the invention: the film outlet mechanism comprises a film outlet machine, a distribution box and a positioning box, wherein the film outlet machine is arranged on the working floor, the input end of the film outlet machine is communicated with a feeding pipe, the distribution box is arranged at the output end of the film outlet machine, a film outlet seat is arranged at the top of the distribution box, a film outlet is arranged in the film outlet seat, the positioning box is arranged above the film outlet seat and arranged on the top wall of the distribution box through a supporting rod, a through hole is formed in the positioning box, four groups of positioning rings are arranged in the through hole, the positioning rings are connected together through a driving mechanism and the inner wall of the through hole, and the inner wall of the positioning rings is contacted with the outer wall of the annular film.
As a further scheme of the invention: the driving mechanism comprises a screw rod, a connecting rod and auxiliary rods, wherein a pair of connecting rods are arranged on the outer wall of the positioning ring, the other ends of the connecting rods are arranged on the side walls of the fixed blocks, the fixed blocks are arranged at the end parts of the screw rod, an inner cavity is formed in the positioning box, the inner cavity is located at the outer side of the through hole, the other ends of the screw rod extend into the inner cavity, driven bevel gears are arranged on the outer wall of the screw rod, the driven bevel gears are rotatably arranged on the side walls of the inner cavity, a pair of auxiliary rods are rotatably arranged on the two side walls of the fixed blocks, the other ends of the auxiliary rods are rotatably arranged at the end parts of the sliding blocks, the sliding blocks are slidably arranged in sliding rails, and the sliding rails are arranged on the inner walls of the through holes.
As a further scheme of the invention: the inner cavity is internally provided with two first rotating shafts and two second rotating shafts, the first rotating shafts and the second rotating shafts are rotatably arranged in the inner cavity and are connected together through bevel gear groups, meanwhile, the two first rotating shafts and the second rotating shafts are connected together through bevel gear groups, the end part of one first rotating shaft extends out of the side wall of the positioning box, the extending end of the first rotating shaft is connected with a handle, the second rotating shaft is meshed together through a bevel gear and a driven bevel gear outside the screw, a chute is formed in the side wall of the screw, the first rotating shaft extends out of the chute, and the first rotating shafts are meshed together through the bevel gear and the driven bevel gear outside the screw.
As a further scheme of the invention: the top of the positioning box is provided with a pair of air cylinders through a bracket, the end parts of the air cylinders are provided with cooling blocks, the cooling blocks are arranged into a ring shape, meanwhile, the inner walls of the cooling blocks are provided with snake-shaped grooves, the top ends of the snake-shaped grooves are connected with an air inlet pipe, and the other ends of the air inlet pipe are connected with an external air conditioner.
As a further scheme of the invention: the compressing mechanism comprises a compression roller and side rods, wherein the compression roller is arranged on the outer wall of an installation shaft, two ends of the installation shaft are rotatably arranged in the side wall of a bearing seat, the bearing seat is slidably arranged on the top wall of the membrane closing box, one end of the installation shaft is connected with an output shaft of a first motor through a coupling, and the first motor is arranged on the side wall of the bearing seat.
As a further scheme of the invention: a pair of side rods are installed on the side wall of the bearing seat, the side rods are installed on the outer wall of the side rods in a rotating mode, the other ends of the side rods are installed on the outer wall of the lead screw in a rotating mode through a side wall installing block, one end of the lead screw is installed on an output shaft of the second motor, the second motor is installed on the top wall of the film closing box, the other ends of the lead screws are installed in the side wall of the installation frame in a rotating mode, and the installation frame is installed on the top wall of the film closing box.
As a further scheme of the invention: the guide roller I is rotatably arranged on the top wall of the right side of the film combining box, the guide roller II and the guide roller III are rotatably arranged on the right side wall of the film combining box, the composite film is led out from the guide roller I, the guide roller II and the guide roller III in sequence, the leading-out end of the composite film is connected with the winding roller, and the winding roller is arranged on the working ground.
As still further aspects of the invention: the locating ring comprises an upper ring body and a lower ring body, wherein the upper ring body is arranged at the top of the lower ring body, the diameter of the upper ring body is larger than that of the lower ring body, and the lower ring body is arranged close to the film outlet machine.
By adopting the technical scheme, the invention has the following advantages: the invention is provided with the locating box, the locating box is internally provided with the through holes, the locating rings are connected through the driving mechanism, the four driven bevel gears are driven to rotate through the four groups of rotating shafts to drive the four screws to synchronously move, the four groups of locating rings can be adjusted, the auxiliary locating of annular films with different diameters is realized, the problem that the plastic films are influenced due to inconvenient control of the gas inlet amount is solved, the annular films are more convenient to process, meanwhile, the top of the film outlet mechanism is provided with the film closing box, five groups of flow channels are arranged in the film closing box, single-layer composite films enter the flow channels to be compounded, and then the multi-layer composite films are formed through the compound compaction of the pressing mechanism, so that the production requirements of different plastic films are met.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of a film discharging mechanism of the present invention.
FIG. 3 is a schematic cross-sectional view of the film combining box of the present invention.
Fig. 4 is an enlarged view of a portion of the present invention at a.
Fig. 5 is a side view of the drive rod of the present invention.
FIG. 6 is a schematic view of a retaining ring according to the present invention.
Fig. 7 is a side view of the retaining ring of the present invention.
Fig. 8 is a top view of a cooling block of the present invention.
FIG. 9 is an expanded schematic view of the inside of the cooling block of the present invention.
Fig. 10 is a schematic longitudinal section of the film combining box of the present invention.
Fig. 11 is a schematic structural view of a compressing mechanism of the present invention.
As shown in the figure: 1. the film discharging mechanism comprises a film combining box, 201, a first runner, 202, a second runner, 203, a third runner, 204, a fourth runner, 205, a fifth runner, 3, a pressing mechanism, 4, a composite film, 5, a roller, 6, a supporting frame, 7, a first guide roller, 8, a second guide roller, 9, a third guide roller, 10, a winding roller, 11, a film discharging machine, 12, a distribution box, 13, a film discharging seat, 14, a film discharging opening, 15, an air gun, 16, a positioning box, 17, an air cylinder, 18, a cooling block, 19, a feeding pipe, 20 and a supporting rod, 21, an air inlet pipe, 22, a through hole, 23, an inner cavity, 24, a positioning ring, 2401, an upper ring body, 2402, a lower ring body, 25, a first rotating shaft, 26, a second rotating shaft, 27, a screw, 28, a crank, 29, a connecting rod, 30, a fixed block, 31, an auxiliary rod, 32, a sliding block, 33, a sliding rail, 34, a sliding groove, 35, a serpentine slot, 36, a compression roller, 37, a mounting shaft, 38, a bearing seat, 39, a side block, 40, a first motor, 41, a side rod, 42, a mounting block, 43, a screw rod, 44, a second motor, 45, a mounting rack, 46 and an annular membrane.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 3, in the embodiment of the invention, a blown film unit for producing blown film includes a film discharging mechanism 1, a film combining box 2 and a compressing mechanism 3, wherein the film combining box 2 is mounted on a working surface through a supporting frame 6, five groups of film discharging mechanisms 1 are disposed at the bottom of the film combining box 2, the film discharging mechanism 1 performs blow molding treatment on an annular film 46, a pair of rolling rollers 5 are disposed at the top of the film discharging mechanism 1, the rolling rollers 5 are rotatably mounted on the bottom wall of the film combining box 2, a driving shaft of the rolling rollers 5 is connected with a motor (not shown in the drawing), meanwhile, a first flow channel 201, a second flow channel 202, a third flow channel 203, a fourth flow channel 204 and a fifth flow channel 205 are disposed in the film combining box 2, and the first flow channel 201, the second flow channel 202, the third flow channel 203, the fourth flow channel 204 and the fifth flow channel 205 are respectively located right above the five groups of film discharging mechanisms 1, the single-layer films blown by the film discharging mechanism 1 are led into corresponding flow passages through the laminating roller 5, the second flow passage 202, the third flow passage 203 and the first flow passage 201 are communicated together, wherein the fourth flow passage 204 and the fifth flow passage 205 are also communicated with the first flow passage 201 together, so that a plurality of groups of single-layer films are compounded together, meanwhile, a pair of pressing mechanisms 3 are arranged at the top of the film combining box 2, the centers of the two groups of pressing mechanisms 3 are positioned right above the first flow passage 201, the plurality of groups of single-layer films are compounded and pressed together through the two groups of pressing mechanisms 3 to form a composite film 4, a guide roller I7 is rotatably arranged on the top wall of the right side of the film combining box 2, a guide roller II 8 and a guide roller III 9 are rotatably arranged on the right side wall of the film combining box 2, the composite film 4 is led out from the guide roller I7, the guide roller II 8 and the guide roller III 9 in sequence, and the leading-out end of the composite film 4 is connected with the winding roller 10, the wind-up roll 10 is installed on the working floor, and the processed composite film 4 is wound up and stored through the wind-up roll 10.
Referring to fig. 2, it can be seen that: the film discharging mechanism 1 comprises a film discharging machine 11, a distribution box 12 and a positioning box 16, wherein the film discharging machine 11 is arranged on a working surface, an input end of the film discharging machine 11 is communicated with a feeding pipe 19, the distribution box 12 is arranged at an output end of the film discharging machine 11, a film discharging seat 13 is arranged at the top of the distribution box 12, a film discharging opening 14 is arranged in the film discharging seat 13, a cylindrical film produced by processing the film discharging machine 11 is led into the film discharging seat 13 through the distribution box 12, then an annular film 46 is led into the film discharging opening 14, meanwhile, the positioning box 16 is arranged above the film discharging seat 13, the positioning box 16 is arranged on the top wall of the distribution box 12 through a supporting rod 20, a through hole 22 is formed in the positioning box 16, four groups of positioning rings 24 are arranged in the through holes 22, the positioning rings 24 are connected together through a driving mechanism and the inner wall of the through hole 22, the inner wall of the positioning rings 24 and the outer wall of the annular film 46 are contacted together, the supporting positioning of the annular film 46 is carried out, the opening diameter of the annular film 46 is more convenient, and the problem that the plastic film is influenced by the inconvenient control of the air inlet quantity is solved.
Specifically, the driving mechanism includes a screw 27, a connecting rod 29 and an auxiliary rod 31, wherein a pair of connecting rods 29 are installed on the outer wall of the positioning ring 24, the other end of the connecting rod 29 is installed on the side wall of the fixed block 30, and the fixed block 30 is installed at the end of the screw 27, meanwhile, an inner cavity 23 is formed in the positioning box 16, the inner cavity 23 is located at the outer side of the through hole 22, the other end of the screw 27 stretches into the inner cavity 23, a driven bevel gear is installed on the outer wall of the inner cavity 23 in a threaded manner, the driven bevel gear is installed on the side wall of the inner cavity 23 in a rotating manner, a pair of auxiliary rods 31 are installed on the two side walls of the fixed block 30 in a rotating manner, the other end of the auxiliary rod 31 is installed at the end of the sliding block 32, the sliding block 32 is installed in the sliding rail 33, and the sliding rail 33 is installed on the inner wall of the through hole 22, so that the screw 27 is limited by the auxiliary rod 31, the driven bevel gear drives the screw 27 to move horizontally, the distance between four groups of positioning rings 24 is adjusted, and the positioning requirements of annular membranes 46 with different diameters are met.
Preferably, two first rotating shafts 25 and two second rotating shafts 26 are disposed in the inner cavity 23, the first rotating shafts 25 and the second rotating shafts 26 are rotatably mounted in the inner cavity 23, the first rotating shafts 25 and the second rotating shafts 26 are connected together through bevel gears, simultaneously the two first rotating shafts 25 and the second rotating shafts 26 are connected together through bevel gears, the end portion of one first rotating shaft 25 extends out of the side wall of the positioning box 16, the extending end of the first rotating shaft 25 is connected with a handle 28, so that the four rotating shafts are driven to synchronously rotate through the handle 28, the second rotating shaft 26 is meshed together through driven bevel gears outside the bevel gears and the screw 27, a sliding groove 34 is formed in the side wall of the screw 27, the first rotating shaft 25 extends out of the sliding groove 34, and the first rotating shaft 25 is meshed together through driven bevel gears outside the bevel gears and the screw 27, so that the four driven bevel gears are driven to rotate through the four rotating shafts, the four screw 27 are driven to synchronously move, and the four positioning rings 24 can be adjusted.
Preferably, the positioning ring 24 includes an upper ring 2401 and a lower ring 2402, wherein the upper ring 2401 is mounted on top of the lower ring 2402, and the diameter of the upper ring 2401 is larger than that of the lower ring 2402, and the lower ring 2402 is disposed close to the film-discharging machine 11, so that the annular film 46 is slowly deformed in the positioning ring 24, and the process is smoother.
Specifically, a pair of cylinders 17 are installed at the top of the positioning box 16 through a bracket, a cooling block 18 is installed at the end part of each cylinder 17, the cooling block 18 is arranged into a ring shape, the cooling block 18 is pushed by the cylinders 17 to be buckled on the outer wall of the annular membrane 46, meanwhile, a snake-shaped groove 35 is formed in the inner wall of the cooling block 18, the top end of the snake-shaped groove 35 is connected with an air inlet pipe 21, the other end of the air inlet pipe 21 is connected with an external air conditioner, cold air is led into the snake-shaped groove 35, so that the cold air flows in a snake-shaped manner in the cold air block 18, the outer wall of the annular membrane 46 is contacted, and the cooling efficiency is higher.
Referring to fig. 11, it can be seen that: the pressing mechanism 3 comprises a pressing roller 36 and side rods 41, wherein the pressing roller 36 is arranged on the outer wall of a mounting shaft 37, two ends of the mounting shaft 37 are rotatably arranged in the side wall of a bearing seat 38, the bearing seat 38 is slidably arranged on the top wall of a film combining box 2, one end of the mounting shaft 37 and an output shaft of a first motor 40 are connected together through a coupling, the first motor 40 is arranged on the side wall of the bearing seat 38, a pair of side rods 41 are arranged on the side wall of the bearing seat 38, the side rods 41 are rotatably arranged on the outer wall of the side rods 41, the other ends of the side rods 41 are rotatably arranged on the side wall of a mounting block 42, a mounting block 42 is rotatably arranged on the outer wall of a lead screw 43, one end of the lead screw 43 is arranged on the output shaft of a second motor 44, the second motor 44 is arranged on the top wall of the film combining box 2, and the other end of the lead screw 43 is rotatably arranged in the side wall of a mounting frame 45, and the mounting frame 45 is arranged on the top wall of the film combining box 2; the screw rod 43 is driven to rotate through the second motor 44, and the bearing seat 38 is slidably mounted at the top of the film combining box 2 to limit the mounting block 42, so that the mounting block 42 horizontally moves under the driving of the screw rod 43, and the compression requirements of composite films 4 with different thicknesses are met.
According to the above preferred embodiment provided by the present invention, the working principle of the present invention is: firstly, operating personnel rotate the crank 28 to drive four driving rods 27 to horizontally move, adjust the positioning ring 24 to a proper position, assist in positioning the annular membrane 46, the operation of opening the annular membrane is more convenient, the problem that the inconvenient control of the gas inlet amount can affect the plastic membrane is solved, the production efficiency is higher, after the blowing is finished, an external air conditioner is started, the air conditioner is led into the snake-shaped groove 35, the annular membrane 46 is cooled, the annular membrane 46 is flattened and formed through two groups of rolling rollers 5 after the cooling is finished, the flattened and formed single-layer membrane enters corresponding flow channels in the membrane combining box 2, then the multi-layer composite membrane 4 is formed by combining and enters between two groups of pressing mechanisms 3, a second motor 44 is started to adjust the two groups of pressing mechanisms 3 to a proper position, the composite membrane 4 is pressed and formed, and the pressed composite membrane 4 is led into the rolling roller 10 through a plurality of groups of guide rollers 7 to be stored.
Claims (6)
1. A blown film unit for making blown film, including play membrane mechanism (1), close membrane case (2) and hold-down mechanism (3), its characterized in that: the film combining box (2) is arranged on a working floor through a supporting frame (6), five groups of film discharging mechanisms (1) are arranged at the bottom of the film combining box (2), the film discharging mechanisms (1) are used for carrying out blow molding treatment on annular films (46), a pair of rolling rollers (5) are arranged at the top of the film discharging mechanisms (1), the rolling rollers (5) are rotatably arranged on the bottom wall of the film combining box (2), a driving shaft of the rolling rollers (5) is connected with a motor, meanwhile, a first flow channel (201), a second flow channel (202), a third flow channel (203), a fourth flow channel (204) and a fifth flow channel (205) are formed in the film combining box (2), the first flow channel (201), the second flow channel (202), the third flow channel (203), the fourth flow channel (204) and the fifth flow channel (205) are respectively arranged right above the five groups of film discharging mechanisms (1), monolayer films which are blown by the film discharging mechanisms (1) are led into corresponding flow channels through the rolling rollers (5), the second flow channel (202), the first flow channel (203) and the fourth flow channel (204) are communicated with the fifth flow channel (205) together, the top of the film combining box (201) is communicated with the first flow channel (3), the centers of the two groups of pressing mechanisms (3) are positioned right above the first flow channel (201); the film discharging mechanism (1) comprises a film discharging machine (11), a distribution box (12) and a positioning box (16), wherein the film discharging machine (11) is installed on a working floor, an input end of the film discharging machine (11) is communicated with a feeding pipe (19), the distribution box (12) is installed at an output end of the film discharging machine (11), a film discharging seat (13) is installed at the top of the distribution box (12), a film discharging opening (14) is installed in the film discharging seat (13), the positioning box (16) is arranged above the film discharging seat (13), the positioning box (16) is installed on the top wall of the distribution box (12) through a supporting rod (20), through holes (22) are formed in the positioning box (16), four groups of positioning rings (24) are arranged in the through holes (22), the positioning rings (24) are connected together through the driving mechanism and the inner walls of the through holes (22), and the inner walls of the positioning rings (24) are contacted with the outer walls of annular films (46); the positioning ring (24) comprises an upper ring body (2401) and a lower ring body (2402), wherein the upper ring body (2401) is arranged at the top of the lower ring body (2402), the diameter of the upper ring body (2401) is larger than that of the lower ring body (2402), and the lower ring body (2402) is arranged close to the film discharging machine (11); the driving mechanism comprises a screw rod (27), a connecting rod (29) and an auxiliary rod (31), wherein a pair of connecting rods (29) are arranged on the outer wall of a positioning ring (24), the other ends of the connecting rods (29) are arranged on the side walls of a fixed block (30), the fixed block (30) is arranged at the end part of the screw rod (27), an inner cavity (23) is formed in the positioning box (16), the inner cavity (23) is located at the outer side of a through hole (22), the other end of the screw rod (27) extends into the inner cavity (23), a driven bevel gear is arranged on the outer wall of the inner cavity (23) in a threaded manner, the driven bevel gear is rotatably arranged on the side walls of the inner cavity (23), a pair of auxiliary rods (31) are rotatably arranged on the two side walls of the fixed block (30), the other ends of the auxiliary rods (31) are rotatably arranged at the end parts of a sliding block (32), the sliding block (32) are slidably arranged in a sliding rail (33), and the sliding rail (33) is arranged on the inner wall of the through hole (22).
2. Blown film unit for producing blown films according to claim 1, characterized in that: two first rotating shafts (25) and two second rotating shafts (26) are arranged in the inner cavity (23), the first rotating shafts (25) and the second rotating shafts (26) are rotatably arranged in the inner cavity (23), the first rotating shafts (25) and the second rotating shafts (26) are connected together through bevel gear groups, meanwhile, the two first rotating shafts (25) and the second rotating shafts (26) are connected together through bevel gear groups, the end portion of one first rotating shaft (25) extends out of the side wall of the positioning box (16), the extending end of the first rotating shaft (25) is connected with a handle (28), the second rotating shaft (26) is meshed together through a bevel gear and a driven bevel gear outside the screw (27), a sliding groove (34) is formed in the side wall of the screw (27), the first rotating shaft (25) extends out of the sliding groove (34), and the first rotating shaft (25) is meshed together through the bevel gear and the driven bevel gear outside the screw (27).
3. Blown film unit for producing blown films according to claim 1, characterized in that: a pair of air cylinders (17) are arranged at the top of the positioning box (16) through a bracket, cooling blocks (18) are arranged at the ends of the air cylinders (17), the cooling blocks (18) are arranged in a ring shape, a snake-shaped groove (35) is formed in the inner wall of each cooling block (18), the top end of each snake-shaped groove (35) is connected with an air inlet pipe (21), and the other end of each air inlet pipe (21) is connected with an external air conditioner.
4. Blown film unit for producing blown films according to claim 1, characterized in that: the compressing mechanism (3) comprises a compression roller (36) and side rods (41), wherein the compression roller (36) is arranged on the outer wall of a mounting shaft (37), two ends of the mounting shaft (37) are rotatably arranged in the side wall of a bearing seat (38), the bearing seat (38) is slidably arranged on the top wall of the film closing box (2), one end of the mounting shaft (37) is connected with an output shaft of a first motor (40) through a coupling, and the first motor (40) is arranged on the side wall of the bearing seat (38).
5. A blown film unit for producing blown films as defined in claim 4 wherein: a pair of side rods (41) are installed on the side wall of the bearing seat (38), the side rods (41) are rotatably installed on the outer wall of the side rods (41), the other ends of the side rods (41) are rotatably installed on the outer wall of the lead screw (43) through side wall installation blocks (42), one end of the lead screw (43) is installed on the output shaft of the second motor (44), the second motor (44) is installed on the top wall of the film closing box (2), the other ends of the lead screws (43) are rotatably installed in the side wall of the installation frame (45), and the installation frame (45) is installed on the top wall of the film closing box (2).
6. Blown film unit for producing blown films according to claim 1, characterized in that: the device is characterized in that a first guide roller (7) is rotatably arranged on the top wall of the right side of the film combining box (2), a second guide roller (8) and a third guide roller (9) are rotatably arranged on the right side wall of the film combining box (2), the composite film (4) is led out from the first guide roller (7), the second guide roller (8) and the third guide roller (9) in sequence, the leading-out end of the composite film (4) is connected with a winding roller (10), and the winding roller (10) is arranged on the working ground.
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| CN202111301076.4A CN113997478B (en) | 2021-11-04 | 2021-11-04 | Blown film unit for producing blown films |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111301076.4A CN113997478B (en) | 2021-11-04 | 2021-11-04 | Blown film unit for producing blown films |
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| CN113997478B true CN113997478B (en) | 2024-04-12 |
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| CN113997478A (en) | 2022-02-01 |
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