CN106113476B - A PVC film blowing machine - Google Patents

Abstract

The invention provides a PVC film blowing machine, and belongs to the technical field of film blowing machines. It has solved the problem of blowing inefficiency among the prior art. The PVC film blowing machine comprises a base, wherein a first mounting plate and a second mounting plate which are arranged in parallel are fixed on the base, a mounting frame is detachably arranged between the first mounting plate and the second mounting plate, a melting mechanism capable of melting raw materials is arranged on the base, a film blowing mechanism capable of blowing out film materials is arranged on one side of the melting mechanism, a cooling mechanism capable of cooling the film materials is arranged below the film blowing mechanism, a third traction roller is arranged above the cooling mechanism, a cutting mechanism capable of cutting edge materials is arranged above the third traction roller, and a recovery mechanism capable of recovering waste materials is arranged above the cutting mechanism; still be equipped with pinch roller one and pinch roller two between mounting panel one and the mounting panel II, one side of pinch roller one and pinch roller two is equipped with the receiving agencies that can be with the membrane material rolling. The invention has the advantage of high film blowing efficiency.

Description

A PVC film blowing machine

technical field

The invention belongs to the technical field of film blowing machines and relates to a PVC film blowing machine.

Background technique

Process flow of film blowing machine: raw material mixing—thermoplastic extrusion—inflation—cooling—traction—winding. The plastic particles enter the screw from the hopper by their own weight. When the particles contact the beveled edge of the thread, the rotating bevel faces the plastic and produces a thrust perpendicular to the bevel surface, pushing the plastic particles forward. During the process, due to The friction between the plastic and the screw, the plastic and the barrel, and the collision friction between the particles are also gradually melted due to the external heating of the barrel, and the molten plastic is filtered through the machine head to remove impurities and comes out of the die mouth, and is cooled by the air ring , Inflation, the finished film is rolled into a tube by the bubble stabilizer herringbone plate and the traction roller. In the existing technology, the cooling effect is poor, the film blowing machine is bulky, and the rewound film still needs to be manually reprocessed.

After searching, for example, Chinese patent literature discloses a film blowing machine [patent number: ZL201511016254.3; authorized announcement number: CN105415660A]. This film blowing machine includes extruder, die head, fixed core rod, air ring, traction roller and herringbone frame. The die head is provided with a first air outlet at the connection with the fixed core rod, the first air outlet is arranged on the inside of the discharge port of the die head, and the fixed core rod is provided with a second outlet The air outlet, the second air outlet is arranged on the rod body of the fixed core rod. However, this kind of film blowing machine does not discharge the side material of the film material, and the side material needs to be cut manually after production. It has not realized automatic film blowing, and the film blowing efficiency is relatively low.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems in the existing technology, and propose a PVC film blowing machine. The PVC film blowing machine has the characteristics of fully automatic film blowing and high film blowing efficiency.

The purpose of the present invention can be achieved through the following technical solutions:

A PVC film blowing machine, comprising a base, two parallel mounting plates 1 and 2 are fixed on the base, a mounting frame is detachably provided between the mounting plate 1 and the mounting plate 2, and It is characterized in that a melting mechanism capable of melting raw materials is provided on the base, a film blowing mechanism capable of blowing out film materials is provided on one side of the melting mechanism, and the film blowing mechanism includes a rectangular main mold Body and auxiliary mold body, the opposite sides of the main mold body and the auxiliary mold body are provided with insulation layers, and a cavity for blowing out the film material is formed between the main mold body and the auxiliary mold body. A screw is provided in the cavity, and the screw is connected with a power structure. The upper part of the main mold body and the auxiliary mold body has a second feeding port, and the lower part of the main mold body and the auxiliary mold body has a second discharge port; A cooling mechanism capable of cooling the film material is provided below the film blowing mechanism, traction roller 1 and traction roller 2 are arranged below the cooling mechanism, traction roller 3 is arranged above the cooling mechanism, traction roller 1, traction roller The second and the traction roller three are all arranged between the installation plate one and the installation plate two by means of axially fixed and circumferential rotation, and a cutting mechanism capable of cutting edge material is provided above the traction roller three, and a cutting mechanism is provided above the cutting mechanism. A recovery mechanism that can recycle waste materials; a pressure roller 1 and a pressure roller 2 are also arranged between the installation plate 1 and the installation plate 2, and the pressure roller 1 and the pressure roller 2 are all on one side of the cutting mechanism, and the pressure roller 1 and the pressure roller 2 are both located on one side of the cutting mechanism, The pinch roller 2 is located under the pinch roller 1, and a channel for the membrane material to pass is formed between the pinch roll 1 and the pinch roll 2. One side of the pinch roller 1 and the pinch roll 2 is equipped with a receiving mechanism.

The working process of the PVC film blowing machine, firstly, put the raw materials into the melting mechanism, the melting mechanism melts the raw materials and sends them to the film blowing mechanism, after the film blowing mechanism is processed, the film material is output from the outlet; secondly, the film material passes through After the cooling mechanism is cooled, it is conveyed by the traction roller 1 and the traction roller 2; then, when the film material passes the traction roller 3, the upper cutting mechanism starts to cut the side material of the film material, and the cut waste is recycled by the recycling mechanism; finally, The membrane material is transported to the receiving mechanism through the first and second pinch rollers.

The melting mechanism includes a rectangular melting box, the melting box is fixed on the base, the top of the melting box is provided with a feed inlet 1, and one side of the melting box is provided with a discharge outlet 1, and the outlet The first feed port is connected to the second feed port through a discharge pipe. An electric heater is fixed inside the melting tank, and an insulating layer is fixed on the inner wall of the melting tank. The raw material is put into the melting tank through the feeding port on the top, and the electric heater in the melting tank heats the raw material, and the heated raw material is in a liquid state, and flows to the film blowing mechanism through the discharge pipe.

The power structure includes an electromagnetic speed regulating motor and a speed reducer, and the electromagnetic speed regulating motor and the speed reducer are fixed on the base, and the output shaft of the electromagnetic speed regulating motor is connected with the input shaft of the speed reducer through a coupling In connection, the above-mentioned screw is connected with the output shaft of the reducer through coupling two. The electromagnetic speed-regulating motor runs, and the output shaft of the electromagnetic speed-regulating motor drives the first shaft coupling to rotate, the first shaft coupling drives the speed reducer to rotate, the speed reducer rotates to drive the second shaft coupling to rotate, and the second shaft coupling drives the screw to rotate.

The cooling mechanism includes a cooling drum with an air inlet and an air blower with an air outlet, the air blower is fixed on the above-mentioned installation plate 1, the air outlet of the air blower is connected with the air inlet of the cooling drum, and the air outlet of the cooling drum is A number of air outlet holes are opened on the cylinder wall, and the air outlet holes are all strip-shaped. Start the blower, the cooling drum starts to enter the air under the action of the blower, and the wind goes out from the outlet of the blower after passing through the cooling drum, so as to realize the flow of air and achieve the effect of cooling the film material.

Both ends of the cooling drum are provided with bearings, the inner rings of the bearings are respectively fixed to the two ends of the cooling drum, and the outer rings of the bearings are respectively fixed on the first mounting plate and the second mounting plate. By setting the bearing, the cooling drum can rotate together with the transmission of the film material, and the rotation of the cooling drum promotes the accelerated circulation of the air, so that the cooling effect of the film material is better.

The cutting mechanism includes a fixed rod, a left cutter and a right cutter, the two ends of the fixed rod are rotatably connected to the first mounting plate and the second mounting plate, and the fixed rod is provided with a sliding groove along its axial direction. The left cutter is fixed with a slide block one that matches the slide groove and can slide along it, and the right cutter is fixed with a slide block two that matches the slide groove and can slide along it. The slide block one and the slide block two Self-locking switches are respectively arranged on the mounting frame, and a swing structure capable of causing the fixed rod to swing is provided on the mounting frame. One piston rod is hinged on the above-mentioned fixed rod. According to the actual width of the film material, adjust the distance between the left cutter and the right cutter through the slider 1 and the slider 2, and press the self-locking switch to prevent the slider 1 and the slider 2 from sliding relative to each other. The piston rod moves outward to make the fixed rod swing, and the cutting mechanism is in the working state. When the film material passes through the cutting mechanism, the left and right cutters cut the excess side material.

The recovery mechanism includes a recovery box, a left recovery pipe, a right recovery pipe and a Y-shaped hose. The hose has port 1, port 2 and port 3. The inlet of the left recovery pipe is located on the left Above the cutter, the left recovery pipe is provided with a valve one, the outlet of the left recovery pipe is connected to the inlet of a left recovery pump, the outlet of the left recovery pump is connected to the port one of the hose, and the right recovery pipe is The inlet is located above the right cutter, the right recovery pipe is provided with a valve two, the outlet of the right recovery pipe is connected to the inlet of a right recovery pump, and the outlet of the right recovery pump is connected to the port two of the hose. The port three of the hose connects to the recovery tank. The leftover material cut by the cutting mechanism is sent to the hose through the left recovery pipe and the right recovery pipe under the action of the left recovery pump and the right recovery pump, and finally transported to the recovery box, which can be recycled and reused, saving production cost.

The receiving mechanism includes a receiving box and a discharging plate, the receiving box and the discharging plate are fixed on the base, one side of the receiving box is provided with a material inlet 3, and one end of the discharging plate faces The above-mentioned pressure roller 1 and pressure roller 2, the other end of the discharge plate is in the feed port 3, and a knife rest is fixed on one side of the discharge plate, and a cutting blade capable of cutting the film material is hinged on the knife rest. Knife, described cutting knife links to each other with a cylinder two that can drive it to swing, and the cylinder body of cylinder two is hinged on the mounting plate one, and the piston rod of cylinder two is hinged on the described cutting knife. When the membrane material is transported to the discharge plate by the pressure roller 1 and the pressure roller 2, and enters the receiving box through the discharge plate, according to the length of the required membrane material, the cylinder can be controlled to cut the membrane material with a cutting knife.

The second pinch roller is connected to a drive structure that can drive it to rotate, and the drive structure includes a drive motor, a main gear, a slave gear and a chain, and the drive motor is fixed on the first mounting plate. The main gear is fixed on the output shaft of the driving motor, the said slave gear is fixed at one end of the pressure roller 2, and the said chain is arranged between the main gear and the slave gear. Run drive motor, drive motor output shaft drives main gear to rotate, and main gear rotates and drives chain to rotate, and chain rotates drives slave gear to rotate, and slave gear rotates to drive pinch roller two to rotate.

The installation frame includes several vertical bars and some horizontal bars fixed on the vertical bars, the vertical bars are arranged vertically, the horizontal bars are arranged horizontally, and the horizontal bars and the vertical bars are connected by bolts and nuts; the described One side of mounting plate one is vertically provided with a chute one, and one side of said mounting plate two is vertically provided with a chute two, said chute one and chute two are on the same side, the above-mentioned is close to the installation plate one The first slide bar and the second slide bar are respectively fixed on the vertical bar close to the second mounting plate, and the first slide bar and the second slide bar are slidably arranged in the first slide slot and the second slide slot. The mounting frame plays a very good supporting role, has a simple structure, and is easy to disassemble. By setting the first sliding bar and the second sliding bar, it is convenient to disassemble and replace the first mounting plate and the second mounting plate.

Compared with the existing technology, this PVC film blowing machine has the following advantages:

1. The present invention cuts the width and length of the membrane material in the production process by setting the cutting mechanism and the cutting knife, reduces the subsequent re-cutting process, and improves the production efficiency.

2. The present invention recycles the waste by setting the recovery mechanism, the left recovery pump and the right recovery pump, so that the waste can be reused and the production cost is saved.

3. In the present invention, by setting the cooling roller, the cooling roller can realize driven rotation under the drive of the pinch roller 2, so that the air can accelerate the flow and improve the cooling efficiency. When the film material passes through the cooling roller, the cooling effect is good, so that the film The quality of the material is greatly improved.

4. The present invention not only plays a good supporting role by providing a slidable mounting frame, but also has a simple structure and is easy to disassemble.

Description of drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the present invention.

Figure 3 is a side view of the present invention.

Fig. 4 is a schematic diagram of a partial structure of the film blowing mechanism of the present invention.

Fig. 5 is a schematic structural diagram of the cutting mechanism of the present invention.

Fig. 6 is a structural schematic diagram of the recovery mechanism of the present invention.

In the figure, 1, the base; 2, the first mounting plate; 3, the second mounting plate; 4, the mounting frame; 5, the melting tank; 5a, the first feeding port; , electromagnetic speed-regulating motor; 6b, coupling one; 6c, reducer; 6d, coupling two; 6e, screw; 7, cooling mechanism; 8, traction roller one; 9, traction roller two; 10, traction roller Three; 11, cutting mechanism; 11a, fixed rod; 11b, sliding groove; 11c, left cutter; 11d, right cutter; 11e, sliding block one; 11f, sliding block two; 11g, cylinder one; 12, recycling mechanism ;12a, recovery box; 12b, left recovery pipe; 12c, right recovery pipe; 12d, left recovery pump; 12e, right recovery pump; 12f, hose; 13, pressure roller one; 14, pressure roller two; 14a 1. Drive structure; 15. Receiving box; 15a, discharge plate; 15b, cutting knife; 15c, cylinder two.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, a PVC film blowing machine includes a base 1, and two parallel mounting plates one 2 and two mounting plates 3 are fixed on the base 1, the first mounting plate 2 and the mounting plate A mounting frame 4 is detachably arranged between the two 3, and the mounting frame 4 includes several vertical bars and some horizontal bars fixed on the vertical bars. The vertical bars are vertically arranged, and the horizontal bars are horizontally arranged. One side of mounting plate one 2 is vertically provided with a chute one, and one side of mounting plate two 3 is vertically provided with a chute two, and chute one and chute two are on the same side, close to mounting plate one 2 and close to the installation Slide bar one and slide bar two are respectively fixed on the vertical bars of plate two 3, and slide bar one and slide bar two are slidably arranged in chute one and chute two. The mounting frame 4 plays a good supporting role, has a simple structure, and is easy to disassemble. By setting the slide bar 1 and the slide bar 2, it is convenient for the mounting plate 1 2 and the mounting plate 2 3 to be disassembled and replaced.

The base 1 is provided with a melting mechanism that can melt the raw materials. The melting mechanism includes a rectangular melting box 5. The melting box 5 is fixed on the base 1. The top of the melting box 5 is provided with a feed inlet-5a. One side is provided with discharge port one 5b, discharge port one 5b is connected with feed port two through a discharge pipe, an electric heater is fixed inside the melting box 5, and an insulating layer is fixed on the inner wall of the melting box 5. The raw material is put into the melting tank 5 through the feed inlet 5a at the top, and the electric heater in the melting tank 5 heats the raw material, and the heated raw material is in a liquid state, and flows into the film blowing mechanism 6 through the discharge pipe.

One side of melting mechanism is provided with the blown film mechanism 6 that can blow out film material, as shown in Figure 4, blown film mechanism 6 comprises the main mold body and secondary mold body that are rectangular, and the opposite side of main mold body and secondary mold body Both sides are provided with an insulating layer, and a cavity for blowing out the membrane material is formed between the main mold body and the auxiliary mold body. A screw 6e is arranged in the cavity, and the screw 6e is connected with a power structure. The power structure includes an electromagnetic speed regulating motor 6a and Speed reducer 6c, electromagnetic speed regulating motor 6a and speed reducer 6c are fixed on the base 1, the output shaft of electromagnetic speed regulating motor 6a is connected with the input shaft of speed reducer 6c by shaft coupling one 6b, and screw rod 6e is by shaft coupling two 6d is connected with the output shaft of the speed reducer 6c, the upper part of the main mold body and the auxiliary mold body has the second feeding port, and the lower part of the main mold body and the auxiliary mold body has the second discharge port. The electromagnetic speed-regulating motor 6a runs, and the output shaft of the electromagnetic speed-regulating motor 6a drives the shaft coupling one 6b to rotate, and the shaft coupling one 6b rotates to drive the speed reducer 6c to rotate, and the speed reducer 6c rotates to drive the shaft coupling two 6d to rotate, and the shaft coupling Two 6d rotation drives the screw rod 6e to rotate.

The bottom of the film blowing mechanism 6 is provided with a cooling mechanism 7 that can cool the film material. The cooling mechanism 7 includes a cooling drum with an air inlet and a blower with an air outlet. The blower is fixed on the mounting plate-2. The air inlets of the drum are connected to each other, and the wall of the cooling drum is provided with a number of air outlet holes, all of which are in the shape of strips. Both ends of the cooling drum are provided with bearings, the inner rings of the bearings are respectively fixed to the two ends of the cooling drum, and the outer rings of the bearings are respectively fixed on the first mounting plate 2 and the second mounting plate 3. Start the blower, the cooling drum starts to enter the air under the action of the blower, and the wind goes out from the outlet of the blower after passing through the cooling drum, so as to realize the flow of air and achieve the effect of cooling the film material. By setting the bearing, the cooling drum can rotate together with the transmission of the film material, and the rotation of the cooling drum promotes the accelerated circulation of the air, so that the cooling effect of the film material is better.

The cooling mechanism 7 below is provided with traction roller one 8 and traction roller two 9, and the top of cooling mechanism 7 is provided with traction roller three 10, and traction roller one 8 and traction roller two 9, traction roller three 10 all pass through axial fixed circumferential rotation The mode is arranged between the installation plate one 2 and the installation plate two 3, and the top of the traction roller three 10 is provided with a cutting mechanism 11 capable of cutting edge material, as shown in Figure 5, the cutting mechanism 11 includes a fixed rod 11a, a left cutter 11c With the right cutter 11d, the two ends of the fixed rod 11a are rotatably connected to the mounting plate one 2 and the mounting plate two 3, the fixed rod 11a is provided with a sliding groove 11b along its axial direction, and the left cutting blade 11c is fixed with a sliding groove 11b to match the sliding groove 11b. And the sliding block one 11e that can slide along it, the right cutting knife 11d is fixed with the sliding block two 11f that matches with the sliding groove 11b and can slide along it, the sliding block one 11e and the sliding block two 11f are respectively provided with self-locking switches , the mounting frame 4 is provided with a swing structure that can make the fixed rod 11a swing, the swing structure includes a cylinder one 11g, the cylinder body of the cylinder one 11g is hinged on the mounting frame 4, and the piston rod of the cylinder one 11g is hinged on the fixed rod 11a . According to the actual required width of the film material, adjust the distance between the left cutter 11c and the right cutter 11d through the slider 11e and the slider 2 11f, and press the self-locking switch to prevent the slider 11e and the slider 2 11f from happening. Relatively sliding, the piston rod of the cylinder 11g moves outward, so that the fixed rod 11a swings, and the cutting mechanism 11 is in a working state. When the film material passes through the cutting mechanism 11, the left cutter 11c and the right cutter 11d will cut the excess edge material. cutting.

The top of the cutting mechanism 11 is provided with a recovery mechanism 12 capable of reclaiming waste materials. As shown in Figure 6, the recovery mechanism 12 includes a recovery box 12a, a left recovery pipe 12b, a right recovery pipe 12c and a Y-shaped flexible pipe 12f. It has port 1, port 2 and port 3. The inlet of the left recovery pipe 12b is located above the left cutter 11c. Valve 1 is arranged in the left recovery pipe 12b. The outlet of the left recovery pipe 12b is connected to the inlet of a left recovery pump 12d. The outlet of the pump 12d is connected to the port one of the hose 12f, the inlet of the right recovery pipe 12c is located above the right cutter 11d, the right recovery pipe 12c is provided with a valve two, and the outlet of the right recovery pipe 12c is connected to the inlet of a right recovery pump 12e, The outlet of the right recovery pump 12e is connected to the second port of the hose 12f, and the third port of the hose 12f is connected to the recovery tank 12a. The leftover material cut by the cutting mechanism 11 is sent to the hose 12f through the left recovery pipe 12b and the right recovery pipe 12c under the action of the left recovery pump 12d and the right recovery pump 12e, and is finally transported to the recovery box 12a. It can be recycled and reused, saving production cost.

Also be provided with pinching roller one 13 and pinching roller two 14 between mounting plate one 2 and mounting plate two 3, pinching roller one 13 and pinching roller two 14 are all on the side of cutting mechanism 11, pinching roller two 14 is below the pressure roller one 13, and a channel for the film material to pass is formed between the pressure roller one 13 and the pressure roller two 14, and one side of the pressure roller one 13 and the two pressure roller 14 is provided with a film Material rewinding mechanism, the material receiving mechanism includes a material receiving box 15 and a discharge plate 15a, the material receiving box 15 and the material discharge plate 15a are fixed on the base 1, and one side of the material receiving box 15 is provided with a material inlet Three, one end of the discharge plate 15a faces the pressure roller 1 13 and the pressure roller 2 14, the other end of the discharge plate 15a is in the feed port 3, a knife rest is fixed on one side of the discharge plate 15a, and the knife rest A cutting knife 15b that can cut off the membrane material is hinged, and the cutting knife 15b is connected with a cylinder two 15c that can drive it to swing. 15b on. When the film material is delivered to the discharge plate 15a by the pressure roller one 13 and the pressure roller two 14, and enters the material receiving box 15 through the discharge plate 15a, according to the length of the required film material, the cylinder can be controlled to use the cutting knife 15b to The film is cut.

The pinch roller 2 14 is connected with a drive structure 14a that can drive it to rotate. The drive structure 14a includes a drive motor, a master gear, a slave gear and a chain. The drive motor is fixed on the mounting plate 1 2, and the master gear is fixed on the output of the drive motor. On the shaft, the slave gear is fixed on one end of the pinch roller two 14, and the chain is arranged between the main gear and the slave gear. Run the drive motor, the drive motor output shaft drives the main gear to rotate, the main gear rotates to drive the chain to rotate, the chain rotates to drive the slave gear to rotate, and the slave gear rotates to drive the pinch roller 2 14 to rotate.

Generally speaking, the working process of the PVC film blowing machine is as follows. The working process of the PVC film blowing machine, first, put the raw materials into the melting box 5, and the electric heater in the melting box 5 heats the raw materials, and the heated raw materials are in the shape of In the liquid state, it flows through the discharge pipe to the feed port 2 and reaches the cavity, and after being processed in the cavity, the film material flows out of the discharge port 2; secondly, the film material passes through the traction roller 1 8 and the traction roller 2 after being cooled by the cooling drum. 9 for conveying; then, when the film material passes through the traction roller three 10, the left cutter 11c and the right cutter 11d above start to cut the film material, and the cut waste is fed by the left recovery pump 12d and the right recovery pump 12e Recovered in the recovery box 12a; finally, the film material is transported to the material receiving box 15 through the first pinch roller 13 and the second pinch roller 14 .

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although this article uses more base 1; installation plate one 2; installation plate two 3; installation frame 4; Coupling one 6b; reducer 6c; coupling two 6d; screw 6e; cooling mechanism 7; traction roller one 8; traction roller two 9; traction roller three 10; cutting mechanism 11; ; left cutter 11c; right cutter 11d; sliding block one 11e; sliding block two 11f; cylinder one 11g; recovery mechanism 12; recovery box 12a; left recovery pipe 12b; Pump 12e; hose 12f; pinch roller one 13; pinch roller two 14; driving structure 14a; receiving box 15; discharge plate 15a; cutting knife 15b; possibility. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (10)

1. A PVC film blowing machine, comprising a base, two mounting plates one and two installed in parallel are fixed on the base, and a mounting frame is detachably arranged between the first mounting plate and the second mounting plate , it is characterized in that a melting mechanism capable of melting raw materials is provided on the base, a film blowing mechanism capable of blowing out film materials is provided on one side of the melting mechanism, and the film blowing mechanism includes a rectangular The main mold body and the auxiliary mold body, the opposite sides of the main mold body and the auxiliary mold body are provided with an insulating layer, and a cavity for blowing out the film material is formed between the described main mold body and the auxiliary mold body. A screw rod is provided in the cavity, and the screw rod is connected with a power structure. The upper part of the main mold body and the auxiliary mold body has a second feeding port, and the lower part of the main mold body and the auxiliary mold body has a second discharge port; The bottom of the film blowing mechanism is provided with a cooling mechanism capable of cooling the film material, the lower part of the cooling mechanism is provided with a traction roller one and two traction rollers, and the top of the cooling mechanism is provided with a traction roller three, traction roller one, Both the traction roller 2 and the traction roller 3 are arranged between the installation plate 1 and the installation plate 2 by means of axially fixed and circumferential rotation, and a cutting mechanism capable of cutting edge materials is provided above the traction roller 3, and above the cutting mechanism A recovery mechanism capable of recycling waste materials is provided; a pressure roller 1 and a pressure roller 2 are also provided between the installation plate 1 and the installation plate 2, and both the pressure roller 1 and the pressure roller 2 are located on one side of the cutting mechanism , the pinch roller 2 is under the pinch roller 1, a channel for the membrane material to pass is formed between the pinch roller 1 and the pinch roller 2, and one side of the pinch roller 1 and the pinch roller 2 is provided with a film material Rewinding mechanism. 2. The PVC film blowing machine according to claim 1, wherein the melting mechanism comprises a rectangular melting box, the melting box is fixed on the base, and the top of the melting box is provided with a feeding port 1. One side of the melting tank is provided with a discharge port 1. The discharge port 1 is connected to the above-mentioned feed port 2 through a discharge pipe. An electric heater is fixed inside the melting tank. On the inner wall of the melting tank Fixed with insulation. 3. The PVC film blowing machine according to claim 1, wherein the power structure includes an electromagnetic speed-regulating motor and a reducer, and the electromagnetic speed-regulating motor and the reducer are fixed on the base, and the described The output shaft of the electromagnetic speed-regulating motor is connected with the input shaft of the reducer through coupling one, and the above-mentioned screw is connected with the output shaft of the reducer through coupling two. 4. The PVC film blowing machine according to claim 1, wherein the cooling mechanism includes a cooling drum with an air inlet and a blower with an air outlet, the blower is fixed on the first mounting plate, and the blower The air outlet of the cooling drum is connected with the air inlet of the cooling drum, and a plurality of air outlet holes are opened on the wall of the cooling drum, and the air outlet holes are in the shape of strips. 5. The PVC film blowing machine according to claim 4, characterized in that, both ends of the cooling drum are provided with bearings, the inner rings of the bearings are respectively fixed to the two ends of the cooling drum, and the outer rings of the bearings are respectively fixed On the above-mentioned installation board one and installation board two. 6. The PVC film blowing machine according to claim 1, characterized in that, the cutting mechanism comprises a fixed rod, a left cutter and a right cutter, and the two ends of the fixed rod are rotatably connected to a mounting plate and installed On the second board, the fixed rod is provided with a sliding groove along its axial direction, the left cutter is fixed with a sliding block 1 that matches the sliding groove and can slide along it, and the right cutting knife is fixed with a sliding block that matches the sliding groove and can slide along it. The sliding block 2 slides along it, the sliding block 1 and the sliding block 2 are respectively provided with self-locking switches, and the mounting frame is provided with a swing structure capable of swinging the fixed rod, and the swing structure includes Cylinder one, the cylinder body of the cylinder one is hinged on the installation frame, and the piston rod of the cylinder one is hinged on the above-mentioned fixed rod. 7. The PVC film blowing machine according to claim 6, characterized in that, the recovery mechanism comprises a recovery box, a left recovery pipe, a right recovery pipe and a Y-shaped flexible pipe, and the flexible pipe has a port 1. Port 2 and port 3. The inlet of the left recovery pipe is located above the left cutter. Valve 1 is provided in the left recovery pipe. The outlet of the left recovery pipe is connected to the inlet of a left recovery pump. The outlet of the left recovery pump is connected to port one of the hose, the inlet of the right recovery pipe is located above the right cutter, the valve two is set in the right recovery pipe, and the outlet of the right recovery pipe is connected to a right recovery The inlet of the pump and the outlet of the right recovery pump are connected to port 2 of the hose, and port 3 of the hose is connected to the recovery tank. 8. The PVC film blowing machine according to claim 1, wherein the receiving mechanism comprises a receiving box and a discharging plate, and the receiving box and the discharging plate are all fixed on the base, and the collecting One side of the material box is provided with a feed inlet 3, one end of the discharge plate faces the above-mentioned pressure roller 1 and pressure roller 2, the other end of the discharge plate is in the feed inlet 3, and one side of the discharge plate is fixed There is a knife rest, and a cutting knife capable of cutting the membrane material is hinged on the knife rest, and the cutting knife is connected with a cylinder 2 that can drive it to swing, and the cylinder body of the cylinder 2 is hinged on the mounting plate 1, and the cylinder 2 The piston rod is hinged on the cutting knife. 9. The PVC film blowing machine according to claim 1 or 8, characterized in that, the second pinch roller is connected to a drive structure capable of driving it to rotate, and the drive structure includes a drive motor, a main gear, From the gear and the chain, the drive motor is fixed on the mounting plate one, the main gear is fixed on the output shaft of the drive motor, the slave gear is fixed on one end of the pressure roller two, and the chain is set between the master and slave gears. 10. The PVC film blowing machine according to claim 9, characterized in that, the mounting frame includes several vertical bars and some cross bars fixed on the vertical bars, the vertical bars are vertically arranged, and the The horizontal bar is arranged horizontally, and the horizontal bar and the vertical bar are connected by bolts and nuts; a chute 1 is vertically provided on one side of the mounting plate 1, and a chute 2 is vertically provided on one side of the mounting plate 2, so that The chute 1 and the chute 2 are on the same side, the above-mentioned vertical bars close to the installation plate 1 and the installation plate 2 are respectively fixed with the slide bar 1 and the slide bar 2, and the slide bar 1 and the slide bar 2 are slidably arranged on the chute 1 and chute 2.