Double-screw type film blowing production forming equipment

Abstract

The invention belongs to the technical field of double-screw type film blowing equipment, and discloses double-screw type film blowing production forming equipment which comprises a double-screw film blowing device. The film blowing air ring is arranged on the right side of the top of the double-screw film blowing device; the supporting frame is arranged on the right side of the top of the double-screw film blowing device and above the right side of the film blowing air ring. According to the technical scheme, by arranging the trigger rod and the air cavity ring, when the double-screw film blowing device extrudes and cools materials and is located below the film blowing air ring, film blowing can be carried out to enable film bubbles in the inner cavity of the film blowing air ring to expand, then the two air grooves are extruded to move oppositely, and at the moment, negative pressure can be generated in the inner cavity of the inner side of the trigger rod; the negative pressure acts on the first connecting air channel, the metal hose and the inner cavity of the air cavity ring, so that the outer side of the bottom of the bubble is tightly sucked, limited and fixed by the first air hole when the air cavity ring is communicated with the first air hole subsequently, and the influence of vibration on the stability of the bubble is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of twin-screw film blowing equipment, in particular to a twin-screw film blowing production and molding equipment. Background Art

[0002] The twin-screw film blowing equipment consists of a twin-screw extruder, a film head and a film blowing mechanism. The working principle of the twin-screw extruder is based on the mutual engagement and counter-rotation of the twin screws. The heating, melting and mixing of the plastic are achieved through precise mechanical control. The design of the twin screws allows the material to be subjected to stronger shearing and mixing during the extrusion process, promoting the uniformity of the material and improving product quality.

[0003] In the existing twin-screw film blowing production and molding equipment, after the screw extrude to the film head position, when the film is cooled and blown through the film blowing mechanism, the air ring position lacks a limit on the film bubble, which will cause the bottom of the film bubble to move and shake, making the extruded film bubble unstable, and the film bubble will sag and tear. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a twin-screw film blowing production and molding equipment, which has the advantage of being convenient for sucking and limiting the bottom of the film bubble during film blowing.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a twin-screw film blowing production and molding equipment, including a twin-screw film blowing device; a film blowing air ring, arranged on the top right side of the twin-screw film blowing device; a support frame, arranged on the top right side of the twin-screw film blowing device and above the right side of the film blowing air ring; a limiting collar, arranged between the film blowing air ring and the support frame, and with limiting shaping rods fixedly installed above and below; a trigger assembly includes an air groove, the air groove is movably installed on both sides of the top of the inner cavity of the film blowing air ring, a trigger rod is provided inside the film blowing air ring and is located on the outside of the air groove, the outer end of the air groove extends to the inner cavity of the trigger rod, a first connecting air duct is opened inside the film blowing air ring and on the inner side of the top of the air groove, and a first suction assembly is provided inside the film blowing air ring and is located above the trigger assembly.

[0006] Preferably, the first tightening assembly comprises a first air hole, an air cavity ring and a metal hose;

[0007] The first air hole is opened on the inner side of the top of the film blowing air ring, the air cavity ring is movably installed in the inner cavity of the film blowing air ring and the outside of the first air hole, the metal hose is fixedly connected to the outside of the bottom end of the air cavity ring, and the other end of the metal hose is connected to the top of the first connecting air duct.

[0008] Preferably, a first shielding component located on the left side of the air cavity ring is provided on the top of the film blowing air ring, and the first shielding component includes a linkage frame, a gear block and a linkage gear;

[0009] The linkage frame is fixedly installed on the upper left side of the left end air groove, and the top of the linkage frame extends to the left side of the air cavity ring. The linkage gear is movably sleeved on the top of the film blowing air ring and in front of the top of the linkage frame, and the surface of the linkage gear is meshed with the front end of the top of the linkage frame. The tooth block is fixedly installed on the left side of the air cavity ring, and the left side of the tooth block is meshed with the surface of the linkage gear.

[0010] Preferably, the top end of the limiting shaping rod is fixedly connected to the top of the pneumatic component.

[0011] Preferably, a second suction assembly is arranged on the inner side of the limiting collar, and the second suction assembly includes a second air hole, a ventilation cavity, an air cylinder and a first pneumatic rod;

[0012] The second air hole is opened in the middle of the inner side of the limiting ring, the ventilation cavity is opened in the inner wall of the limiting ring and the outer side of the ventilation cavity, the air cylinder is fixedly installed in the middle of both sides of the bottom of the limiting ring, and the top is connected with the ventilation cavity, and the first pneumatic rod is movably installed in the inner cavity of the air cylinder.

[0013] Preferably, a driving assembly located at the front end of the outer side of the air cylinder is arranged on the outer side of the limiting collar, and the driving assembly includes a ventilation channel, a ventilation pipe and a driving air chamber;

[0014] The ventilation channel is opened inside the film blowing air ring and outside the trigger rod, the ventilation pipe is fixedly installed on the top of the film blowing air ring and directly above the ventilation channel, the driving air chamber is fixedly installed on both sides of the limiting ring and the front end of the outer side of the air cylinder, and the inner side of the bottom end of the driving air chamber is fixedly connected to the top of the ventilation pipe.

[0015] Preferably, a rotating assembly is disposed inside the driving air chamber, and the rotating assembly includes a rotating rod, a driving gear, a connecting spring and a driven gear plate;

[0016] The rotating rod is movably sleeved on the middle part of the inner cavity of the driving air chamber, the driving gear is fixedly sleeved on the surface of the rear end of the rotating rod and the back of the driving air chamber, the connecting spring is fixedly installed between the outer side of the rotating rod and the inner wall of the driving air chamber, and the driven gear plate is fixedly installed on the bottom end of the first pneumatic rod.

[0017] Preferably, the surface of the driving gear meshes with the outer side of the driven gear plate.

[0018] Preferably, a second shielding assembly is provided inside the limiting collar and is located in the middle and below the second air hole, and the second shielding assembly includes a shielding plate, a cylindrical groove and a linkage rod;

[0019] The shielding plate is opened inside the limiting ring and on both sides below the second air hole, the cylindrical groove is movably installed in the inner cavity of the shielding plate, and the linkage rod is fixedly installed on the top of the cylindrical groove and located in the middle of the second air hole.

[0020] Preferably, a pneumatic assembly located outside the shielding plate is provided inside the limiting collar, and the pneumatic assembly includes a pneumatic groove, a second pneumatic rod and a second connecting air channel;

[0021] The pneumatic groove is opened inside the limiting collar and between the baffle plate and the ventilation cavity. The second pneumatic rod is movably installed in the inner cavity of the pneumatic groove. The bottom end of the second pneumatic rod is fixedly connected to the top end of the first pneumatic rod. The second connecting airway is opened inside the limiting collar and between the pneumatic groove and the inner side of the bottom end of the baffle plate.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The above technical solution is provided with a trigger rod and an air cavity ring. When the twin-screw film blowing device extrude and cools the material under the film blowing air ring, film blowing can be carried out to expand the film bubble in the inner cavity of the film blowing air ring, and then the two air grooves will be squeezed to move in opposite directions. At this time, negative pressure can be generated in the inner cavity inside the trigger rod, so that the negative pressure acts on the inner cavity of the first connecting air duct, the metal hose and the air cavity ring, so that when the air cavity ring and the first air hole are connected subsequently, the position of the first air hole can be sucked and fixed to the outer side of the bottom of the film bubble to avoid vibration that affects the stability of the film bubble.

[0024] The present invention sets a first pneumatic rod, a driving gear and a driven gear plate. When the air groove moves away from each other in the inner cavity of the trigger rod, the gas on the outer side of the inner cavity of the trigger rod will be pushed through the ventilation groove and the ventilation pipe into the interior of the driving air chamber, so that the air pressure in the inner cavity of the driving air chamber becomes large and smoothly pushes the rotating rod to drive the driving gear to rotate. At this time, due to the meshing relationship between the driving gear and the outer side of the driven gear plate, the driven gear plate and the first pneumatic rod can be driven to move downward as a whole, and finally negative pressure is generated at the top of the inner cavity of the air cylinder, and the subsequent negative pressure will act on the inside of the ventilation cavity to inhale, and then when the second air hole is unsealed, the middle surface of the inner membrane bubble can be sucked and fixed to shape the membrane bubble as a whole.

[0025] The present invention sets a linkage frame and a second pneumatic rod, and through the rotation and dislocation of the air cavity ring to block the first air hole and the cylindrical groove to block the second air hole, the air cavity ring and the inner cavity of the ventilation cavity can be sealed and protected to prevent dust and impurities from entering and affecting the subsequent suction and tightening process. When the two air grooves move in opposite directions, the linkage frame can be driven to move left, so that the linkage gear is driven to rotate, and then the linkage gear will drive the gear block and the air cavity ring to rotate as a whole until the inner cavity of the air cavity ring is connected with the first air hole. When the first pneumatic rod moves downward, the second pneumatic rod will be pulled downward synchronously, so that the gas at the bottom end of the inner cavity of the pneumatic groove is introduced into the inner cavity of the baffle plate through the second connecting airway, so that the cylindrical groove and the linkage rod are pushed upward by the air pressure to release the blocking and sealing of the second air hole, and finally the first air hole and the second air hole are smoothly connected with the air cavity ring and the second air hole to suck and tighten the membrane bubble. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the film blowing air ring of the present invention;

[0028] Figure 3 It is a schematic cross-sectional structure diagram of the film blowing air ring of the present invention;

[0029] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0030] Figure 5 for Figure 3 A schematic diagram of the local enlarged structure at B in the middle;

[0031] Figure 6 It is a schematic cross-sectional structural diagram of the linkage assembly of the present invention;

[0032] Figure 7 It is a schematic cross-sectional structure diagram of a part of the driving assembly of the present invention;

[0033] Figure 8 It is a cross-sectional structural schematic diagram of the rotating assembly of the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure in which the linkage frame, the tooth block and the linkage gear are meshed with each other in the present invention.

[0035] In the figure: 1. Twin-screw film blowing device; 2. Film blowing air ring; 3. Support frame; 4. Limiting collar; 5. Trigger assembly; 501. Air groove; 502. Trigger rod; 503. First connecting air channel; 6. First suction assembly; 601. First air hole; 602. Air cavity ring; 603. Metal hose; 7. Second suction assembly; 701. Second air hole; 702. Ventilation cavity; 703. Air cylinder; 704. First pneumatic rod; 8. Drive assembly; 801. Ventilation channel; 802. Ventilation pipe; 803 , driving air chamber; 9, rotating assembly; 901, rotating rod; 902, driving gear; 903, connecting spring; 904, driven gear plate; 10, limiting shaping rod; 11, first shielding assembly; 1101, linkage frame; 1102, gear block; 1103, linkage gear; 12, second shielding assembly; 1201, shielding plate; 1202, cylindrical groove; 1203, linkage rod; 13, pneumatic assembly; 1301, pneumatic groove; 1302, second pneumatic rod; 1303, second connecting airway. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0037] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0038] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details to obscure the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0039] like Figures 1 to 9 As shown, the present invention provides a twin-screw film blowing production and molding equipment, including a twin-screw film blowing device 1; a film blowing air ring 2, which is arranged on the top right side of the twin-screw film blowing device 1; a support frame 3, which is arranged on the top right side of the twin-screw film blowing device 1 and above the right side of the film blowing air ring 2; a limiting collar 4, which is arranged between the film blowing air ring 2 and the support frame 3, and a limiting shaping rod 10 is fixedly installed above and below; a trigger component 5 includes an air groove 501, the air groove 501 is movably installed on both sides of the top of the inner cavity of the film blowing air ring 2, a trigger rod 502 located on the outside of the air groove 501 is opened inside the film blowing air ring 2, the outer end of the air groove 501 extends to the inner cavity of the trigger rod 502, a first connecting air channel 503 is opened inside the film blowing air ring 2 and inside the top of the air groove 501, and a first suction component 6 located above the trigger component 5 is arranged inside the film blowing air ring 2.

[0040] When the film bubble in the inner cavity of the film blowing air ring 2 is inflated and squeezes and pushes the two air grooves 501 to move in opposite directions, the inner cavity gap inside the trigger rod 502 will become larger and generate negative pressure. After that, the bottom of the film bubble in the inner cavity of the film blowing air ring 2 can be sucked, positioned and fixed by the first suction component 6 to ensure stable subsequent film blowing.

[0041] like Figure 4 As shown, the first tightening assembly 6 includes a first air hole 601, an air cavity ring 602 and a metal hose 603;

[0042] The first air hole 601 is opened on the inner side of the top of the film blowing air ring 2, the air cavity ring 602 is movably installed in the inner cavity of the film blowing air ring 2 and the outer side of the first air hole 601, the metal hose 603 is fixedly connected to the outer side of the bottom end of the air cavity ring 602, and the other end of the metal hose 603 is connected to the top of the first connecting air duct 503.

[0043] The above scheme is adopted: by providing an air cavity ring 602, when the air cavity ring 602 rotates to be connected with the first air hole 601, the negative pressure in the inner cavity of the first connecting air channel 503 can act on the air cavity ring 602 and the first air hole 601, so as to suck and fix the inner surface of the membrane bubble.

[0044] like Figure 6 and Fig. 9 As shown, a first shielding assembly 11 is disposed on the top of the film blowing air ring 2 and is located on the left side of the air cavity ring 602. The first shielding assembly 11 includes a linkage frame 1101, a gear block 1102 and a linkage gear 1103;

[0045] The linkage frame 1101 is fixedly installed on the upper left side of the left end air groove 501, and the top of the linkage frame 1101 extends to the left side of the air cavity ring 602. The linkage gear 1103 is movably connected to the top of the film blowing air ring 2 and the front of the top of the linkage frame 1101, and the surface of the linkage gear 1103 is meshed with the front end of the top of the linkage frame 1101. The gear block 1102 is fixedly installed on the left side of the air cavity ring 602, and the left side of the gear block 1102 is meshed with the surface of the linkage gear 1103.

[0046] The above scheme is adopted: by providing a linkage gear 1103, when the air groove 501 moves in opposite directions, it will push the linkage frame 1101 to move leftward, so as to drive the linkage gear 1103 to rotate, and then drive the gear block 1102 and the air cavity ring 602 to rotate as a whole, so that the air cavity ring 602 and the first air hole 601 are smoothly connected.

[0047] like Figures 1 to 3 As shown, the top end of the limiting shaping rod 10 is fixedly connected to the top of the pneumatic component 13 .

[0048] By adopting the above scheme, the limiting sleeve ring 4 can be integrally fixedly installed on the film blowing air ring 2 through the design of the limiting shaping rod 10, and the limiting shaping rod 10 can fit the surface of the film bubble after expansion, thereby assisting in shaping it.

[0049] like Figure 5 As shown, a second suction assembly 7 is disposed on the inner side of the limiting collar 4, and the second suction assembly 7 includes a second air hole 701, a ventilation cavity 702, an air cylinder 703 and a first pneumatic rod 704;

[0050] The second air hole 701 is opened in the middle of the inner side of the limiting ring 4, the ventilation cavity 702 is opened in the inner wall of the limiting ring 4 and the outer side of the ventilation cavity 702, the air cylinder 703 is fixedly installed in the middle of both sides of the bottom of the limiting ring 4, and the top is connected to the ventilation cavity 702, and the first pneumatic rod 704 is movably installed in the inner cavity of the air cylinder 703.

[0051] The above scheme is adopted: by providing a first pneumatic rod 704, when the first pneumatic rod 704 is driven to move downward, negative pressure will be generated at the top of the inner cavity of the air cylinder 703, and negative pressure will be generated in the inner cavity of the ventilation cavity 702 at the same time, until the ventilation cavity 702 and the second air hole 701 are connected, so that the second air hole 701 can suck and fix the middle part of the membrane bubble.

[0052] like Figure 4 and Figure 7 As shown, the outer side of the limiting collar 4 is provided with a driving assembly 8 located at the outer front end of the air cylinder 703, and the driving assembly 8 includes a ventilation channel 801, a ventilation pipe 802 and a driving air chamber 803;

[0053] The ventilation channel 801 is opened inside the film blowing air ring 2 and outside the trigger rod 502, the ventilation pipe 802 is fixedly installed on the top of the film blowing air ring 2 and directly above the ventilation channel 801, the driving air chamber 803 is fixedly installed on both sides of the limiting ring 4 and the front end of the outer side of the air cylinder 703, and the inner side of the bottom end of the driving air chamber 803 is fixedly connected to the top of the ventilation pipe 802.

[0054] By adopting the above solution: by providing the ventilation pipe 802, when the air grooves 501 move in opposite directions, the inner cavity outside the trigger rod 502 can be pushed through the ventilation groove 801 and the ventilation pipe 802 into the driving air chamber 803, so that the air pressure inside the driving air chamber 803 increases.

[0055] like Figure 5 , Figure 7 and Figure 8 As shown, a rotating assembly 9 is disposed inside the driving air chamber 803, and the rotating assembly 9 includes a rotating rod 901, a driving gear 902, a connecting spring 903 and a driven gear plate 904;

[0056] The rotating rod 901 is movably sleeved in the middle of the inner cavity of the driving air chamber 803, the driving gear 902 is fixedly sleeved on the surface of the rear end of the rotating rod 901 and the back of the driving air chamber 803, the connecting spring 903 is fixedly installed between the outer side of the rotating rod 901 and the inner wall of the driving air chamber 803, and the driven gear plate 904 is fixedly installed at the bottom end of the first pneumatic rod 704.

[0057] The above scheme is adopted: by providing a connecting spring 903, when the air pressure in the driving air chamber 803 increases, it will drive the rotating rod 901 and the driving gear 902 to deflect, and at the same time squeeze the connecting spring 903, and then the elastic force of the connecting spring 903 is released to drive the driving gear 902 to reset, so that the increased gas in the driving air chamber 803 is guided back through the ventilation pipe 802 and the ventilation channel 801.

[0058] like Figure 8 As shown, the surface of the driving gear 902 is meshed with the outer side of the driven gear plate 904 .

[0059] By adopting the above solution, the driving gear 902 is provided. When the rotating rod 901 drives the driving gear 902 to rotate, the driven gear plate 904 and the first pneumatic rod 704 can be driven to move downward as a whole, so that negative pressure is smoothly generated at the top of the inner cavity of the air cylinder 703.

[0060] like Figure 7 As shown, the interior of the limiting collar 4 is provided with a second shielding assembly 12 located in the middle and below the second air hole 701, and the second shielding assembly 12 includes a shielding plate 1201, a cylindrical groove 1202 and a linkage rod 1203;

[0061] The baffle plate 1201 is opened inside the limiting ring 4 and on both sides below the second air hole 701 , the cylindrical groove 1202 is movably installed in the inner cavity of the baffle plate 1201 , and the linkage rod 1203 is fixedly installed on the top of the cylindrical groove 1202 and located in the middle of the second air hole 701 .

[0062] By adopting the above solution: by providing a linkage rod 1203, when the air pressure in the inner cavity at the bottom of the baffle plate 1201 increases, the cylindrical groove 1202 and the linkage rod 1203 will be pushed upward, so that the second air hole 701 and the ventilation cavity 702 are smoothly connected.

[0063] like Figure 7 As shown, the interior of the limiting collar 4 is provided with a pneumatic assembly 13 located outside the shielding plate 1201, and the pneumatic assembly 13 includes a pneumatic groove 1301, a second pneumatic rod 1302 and a second connecting air channel 1303;

[0064] The pneumatic groove 1301 is opened inside the limiting ring 4 and between the baffle plate 1201 and the ventilation cavity 702. The second pneumatic rod 1302 is movably installed in the inner cavity of the pneumatic groove 1301. The bottom end of the second pneumatic rod 1302 is fixedly connected to the top end of the first pneumatic rod 704. The second connecting airway 1303 is opened inside the limiting ring 4 and between the pneumatic groove 1301 and the inner side of the bottom end of the baffle plate 1201.

[0065] The above solution is adopted: by providing a second pneumatic rod 1302, when the first pneumatic rod 704 moves downward as a whole, it will drive the second pneumatic rod 1302 downward synchronously, so that the gas in the bottom inner cavity of the second pneumatic rod 1302 is pushed through the second connecting airway 1303 into the bottom inner cavity of the baffle plate 1201.

[0066] The working principle and use process of the present invention:

[0067] First, the operator can add the material into the twin-screw film blowing device 1, and then the material is conveyed to the bottom of the film blowing air ring 2 through the rotation and extrusion of the twin-screw film blowing device 1 for cooling, and then it can be blown to form a film bubble. The expanded film bubble will first squeeze and push the two air grooves 501 to move opposite to each other, so that the inner cavity gap inside the trigger rod 502 becomes larger, generating negative pressure. At the same time, due to the opposite movement of the two air grooves 501, the air groove 501 at the left end can drive the linkage frame 1101 to move left, and due to the meshing relationship between the front right side of the top of the linkage frame 1101 and the linkage gear 1103, the linkage gear 1103 can be driven to rotate, and then through the meshing relationship between the surface of the linkage gear 1103 and the left side of the tooth block 1102, the tooth block 1102 and the air cavity ring 602 can be driven to rotate as a whole, until the air cavity ring 602 is directly connected to the first air hole 601, and finally the first air hole 601 can suck and limit the outer side of the bottom of the film bubble, so that the film bubble can be stably blown upward.

[0068] Afterwards, when the inner cavity of the trigger rod 502 moves in opposite directions through the air groove 501, the gas outside the inner cavity of the trigger rod 502 can be pushed into the interior of the driving air chamber 803 through the ventilation groove 801 and the ventilation pipe 802. At this time, the air pressure in the inner cavity of the driving air chamber 803 can be increased, and then the front end part of the rotating rod 901 will be pushed to deflect to the left, causing the driving gear 902 to rotate synchronously, and then the driven gear plate 904 and the first pneumatic rod 704 can be driven to move downward as a whole. When the first pneumatic rod 704 moves downward, the gap at the top of the inner cavity of the gas cylinder 703 can be enlarged to generate negative pressure, so that negative pressure is formed in the inner cavity of the ventilation cavity 702 at the same time.

[0069] At the same time, when the first pneumatic rod 704 moves downward, it will drive the second pneumatic rod 1302 to move downward synchronously, so that the gas in the inner cavity of the pneumatic groove 1301 is pushed through the second connecting airway 1303 and introduced into the inner cavity of the baffle plate 1201. At this time, due to the increase in air pressure at the bottom of the inner cavity of the cylindrical groove 1202, the cylindrical groove 1202 and the linkage rod 1203 will be smoothly driven upward as a whole until the linkage rod 1203 is misaligned with the second air hole 701, and the blocking seal can be released. At this time, the negative pressure of the ventilation cavity 702 will suck and fix the middle part of the upwardly inflated film bubble through the second air hole 701, so that the bubble surface can be smoothly shaped.

[0070] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0072] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A twin-screw film blowing production and molding equipment, characterized in that: It comprises a twin-screw film blowing device (1); A film blowing air ring (2) is arranged on the top right side of the twin-screw film blowing device (1); A support frame (3) is arranged on the top right side of the twin-screw film blowing device (1) and above the right side of the film blowing air ring (2); A limiting collar (4) is arranged between the film blowing air ring (2) and the support frame (3), and a limiting shaping rod (10) is fixedly installed above and below; The trigger assembly (5) includes an air groove (501), the air groove (501) is movably installed on both sides of the top of the inner cavity of the film blowing air ring (2), a trigger rod (502) located outside the air groove (501) is provided inside the film blowing air ring (2), the outer end of the air groove (501) extends to the inner cavity of the trigger rod (502), a first connecting air channel (503) is provided inside the film blowing air ring (2) and on the inner side of the top of the air groove (501), and a first clamping assembly (6) located above the trigger assembly (5) is provided inside the film blowing air ring (2).

2. The twin-screw film blowing production and molding equipment according to claim 1, characterized in that: The first suction assembly (6) comprises a first air hole (601), an air cavity ring (602) and a metal hose (603); The first air hole (601) is opened on the inner side of the top of the film blowing air ring (2), the air cavity ring (602) is movably installed in the inner cavity of the film blowing air ring (2) and the outer side of the first air hole (601), the metal hose (603) is fixedly connected to the outer side of the bottom end of the air cavity ring (602), and the other end of the metal hose (603) is connected to the top of the first connecting air duct (503).

3. The twin-screw film blowing production and molding equipment according to claim 1 is characterized in that: A first shielding component (11) located on the left side of the air cavity ring (602) is arranged on the top of the film blowing air ring (2), and the first shielding component (11) comprises a linkage frame (1101), a gear block (1102) and a linkage gear (1103); The linkage frame (1101) is fixedly installed on the upper left side of the left end air groove (501), and the top of the linkage frame (1101) extends to the left side of the air cavity ring (602). The linkage gear (1103) is movably sleeved on the top of the film blowing air ring (2) and in front of the top of the linkage frame (1101), and the surface of the linkage gear (1103) is meshed with the front end of the top of the linkage frame (1101). The gear block (1102) is fixedly installed on the left side of the air cavity ring (602), and the left side of the gear block (1102) is meshed with the surface of the linkage gear (1103).

4. The twin-screw film blowing production and molding equipment according to claim 1, characterized in that: The top end of the limiting shaping rod (10) is fixedly connected to the top of the pneumatic component (13).

5. The twin-screw film blowing production and molding equipment according to claim 1, characterized in that: A second suction assembly (7) is arranged on the inner side of the limiting collar (4), and the second suction assembly (7) comprises a second air hole (701), a ventilation cavity (702), an air cylinder (703) and a first pneumatic rod (704); The second air hole (701) is opened in the middle of the inner side of the limiting ring (4), the ventilation cavity (702) is opened in the inner wall of the limiting ring (4) and the outer side of the ventilation cavity (702), the air cylinder (703) is fixedly installed in the middle of both sides of the bottom of the limiting ring (4), and the top is connected to the ventilation cavity (702), and the first pneumatic rod (704) is movably installed in the inner cavity of the air cylinder (703).

6. The twin-screw film blowing production and molding equipment according to claim 1, characterized in that: The outer side of the limiting collar (4) is provided with a driving assembly (8) located at the front end of the outer side of the air cylinder (703), and the driving assembly (8) includes a ventilation channel (801), a ventilation pipe (802) and a driving air chamber (803); The ventilation channel (801) is opened inside the film blowing air ring (2) and outside the trigger rod (502), the ventilation pipe (802) is fixedly installed on the top of the film blowing air ring (2) and directly above the ventilation channel (801), the driving air chamber (803) is fixedly installed on both sides of the limiting ring (4) and the front end of the outer side of the air cylinder (703), and the inner side of the bottom end of the driving air chamber (803) is fixedly connected to the top of the ventilation pipe (802).

7. The twin-screw film blowing production and molding equipment according to claim 6, characterized in that: A rotating assembly (9) is disposed inside the driving air chamber (803), and the rotating assembly (9) includes a rotating rod (901), a driving gear (902), a connecting spring (903) and a driven gear plate (904); The rotating rod (901) is movably sleeved on the middle part of the inner cavity of the driving air chamber (803), the driving gear (902) is fixedly sleeved on the surface of the rear end of the rotating rod (901) and the back of the driving air chamber (803), the connecting spring (903) is fixedly installed between the outer side of the rotating rod (901) and the inner wall of the driving air chamber (803), and the driven gear plate (904) is fixedly installed on the bottom end of the first pneumatic rod (704).

8. The twin-screw film blowing production and molding equipment according to claim 7, characterized in that: The surface of the driving gear (902) meshes with the outer side of the driven gear plate (904).

9. The twin-screw film blowing production and molding equipment according to claim 1, characterized in that: A second shielding component (12) is arranged inside the limiting collar (4) and is located in the middle and below the second air hole (701), and the second shielding component (12) comprises a shielding plate (1201), a cylindrical groove (1202) and a linkage rod (1203); The shielding plate (1201) is opened inside the limiting ring (4) and on both sides below the second air hole (701), the cylindrical groove (1202) is movably installed in the inner cavity of the shielding plate (1201), and the linkage rod (1203) is fixedly installed on the top of the cylindrical groove (1202) and located in the middle of the second air hole (701).

10. The twin-screw film blowing production and molding equipment according to claim 1, characterized in that: The interior of the limiting collar (4) is provided with a pneumatic assembly (13) located outside the shielding plate (1201), and the pneumatic assembly (13) comprises a pneumatic groove (1301), a second pneumatic rod (1302) and a second connecting air channel (1303); The pneumatic groove (1301) is opened inside the limiting collar (4) and between the shielding plate (1201) and the ventilation cavity (702); the second pneumatic rod (1302) is movably installed in the inner cavity of the pneumatic groove (1301); the bottom end of the second pneumatic rod (1302) is fixedly connected to the top end of the first pneumatic rod (704); and the second connecting airway (1303) is opened inside the limiting collar (4) and between the pneumatic groove (1301) and the inner side of the bottom end of the shielding plate (1201).

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