Multi-layer polymeric membrane co-extrusion molding equipment and molding method

Abstract

The invention discloses multi-layer polymeric membrane co-extrusion forming equipment and a forming method, and relates to the technical field of co-extrusion forming equipment.The multi-layer polymeric membrane co-extrusion forming equipment comprises a discharging frame, an extrusion pipe and an inner pipe, the extrusion pipe and the inner pipe are installed on the discharging frame, a first feeding barrel is fixedly installed on the extrusion pipe, and a base is fixedly installed on the side wall of the discharging frame; and a second feeding cylinder is fixedly mounted on the base. The first auger is located on the outer wall of the inner pipe, at the moment, a first extrusion channel is formed between the outer wall of the inner pipe and the extrusion pipe, the second auger is fixedly installed on the inner rod, at the moment, a second extrusion channel is formed between the inner rod and the inner pipe, and the heating rod is arranged on the inner pipe. At the moment, the heating rod can heat the first extrusion channel and the second extrusion channel at the same time, so that heat utilization is more efficient, the first packing auger and the second packing auger extrude materials in the first extrusion channel and the second extrusion channel correspondingly, and more space is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of co-extrusion molding equipment, and particularly relates to a multi-layer polymer film co-extrusion molding equipment and a molding method. Background Art

[0002] The multi-layer polymer film is extruded through different plastics or different formulations by multiple extruders, reasonably layered, and then extruded and cast by a die head to form a film with a multi-layer structure having various functions;

[0003] When extruding, some existing extrusion equipment usually melts and heats and extrudes one kind of plastic through one extrusion tube, so that when extruding a multi-layer plastic film, multiple extrusion tubes are required to extrude simultaneously. At this time, the multiple extrusion tubes occupy a relatively large space, and the multiple extrusion tubes respectively require different heat sources for melting, resulting in relatively serious heat waste. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-layer polymer film co-extrusion molding equipment and a molding method to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A multi-layer polymer film co-extrusion molding equipment, including a discharge frame and an extrusion tube and an inner tube installed thereon. A first feeding cylinder is fixedly installed on the extrusion tube. A base is fixedly installed on the side wall of the discharge frame. A second feeding cylinder is fixedly installed on the base. A servo motor is fixedly installed on the base. The output end of the servo motor is fixedly installed with a friction disk. A rotating ring is rotatably installed on the inner wall of the extrusion tube. An inner disk is fixedly installed on the inner wall of the rotating ring. Inner rods are fixedly installed on the inner disk. A first auger is fixedly installed on the rotating ring. A second auger is fixedly installed on the inner disk. And a heating rod is fixedly installed inside the inner tube.

[0006] Preferably, a feeding tube is fixedly installed at the bottom end of the second feeding cylinder, and the other end of the feeding tube is communicated with the inner rod;

[0007] A feeding port is opened on the inner rod.

[0008] Preferably, a first discharge port is opened on the extrusion tube, and a second discharge port is opened on the inner tube. Both the first discharge port and the second discharge port are communicated with the discharge frame;

[0009] Two discharge grooves are arranged on the discharge frame, and the first discharge port and the second discharge port are respectively communicated with the two discharge grooves.

[0010] Preferably, an elastic pressure plate is installed on the inner top wall of the discharge groove. A slider is vertically slidably installed on the inner wall of the discharge frame. A vertical rod is fixedly installed at the bottom end of the slider;

[0011] A variable rod is horizontally and slidably installed on the side wall of the discharge frame, and a sliding rod is installed on the variable rod;

[0012] An arc-shaped rod is fixedly installed on the inner wall of the discharge frame. A side plate is fixedly installed on the side wall of the arc-shaped rod. A rotating block is rotatably installed on the side plate, and a rotating rod is rotatably installed on the rotating block;

[0013] A screw rod is threadedly installed on the arc-shaped rod, and a plug rod inserted into the screw rod is slidably installed on the rotating rod.

[0014] Preferably, a connecting block is fixedly installed on the sliding rod, and the connecting block is T-shaped and slidably passes through the middle of the variable rod.

[0015] Preferably, a square slot is opened on the screw rod, and the size of the plug rod is adapted to the size of the slot.

[0016] Preferably, a square plate is fixedly installed at the inner end of the plug rod located inside the rotating rod. A return spring is fixedly installed between the square plate and the rotating rod. A pull rod is fixedly installed at the end of the square plate away from the plug rod, and a pull plate is fixedly installed on the pull rod.

[0017] Preferably, a follower block is rotatably installed on the rotating rod, and the follower block is slidably installed on the arc-shaped rod. A stop block is fixedly installed on the arc-shaped rod.

[0018] According to the forming method of the multi-layer polymer film co-extrusion forming equipment described in any one of the above, the following steps are included:

[0019] S1. Place the respective materials in the first feeding cylinder and the second feeding cylinder;

[0020] S2. Start the servo motor, so that it drives the rotating ring to rotate through the friction disc. At this time, the first auger and the second auger will simultaneously convey the respective materials;

[0021] S3. Convey the molten materials into the discharge frame;

[0022] S4. After the molten materials enter the discharge frame, they pass through different discharge grooves and are controlled in thickness under the respective elastic pressure plates and then come out of the discharge frame.

[0023] In the above technical solution, the present invention provides a multi-layer polymer film co-extrusion molding device and a molding method, which have the following beneficial effects: The first auger is located on the outer wall of the inner tube. At this time, a first extrusion channel is formed between the outer wall of the inner tube and the extrusion tube. The second auger is fixedly installed on the inner rod. At this time, a second extrusion channel is formed between the inner rod and the inner tube. The heating rod is arranged on the inner tube. At this time, the heating rod can heat the first extrusion channel and the second extrusion channel simultaneously, so that the heat utilization is more efficient. And the first auger and the second auger respectively extrude the materials in the first extrusion channel and the second extrusion channel, thus saving more space. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0025] Figure 1-2 All are schematic three-dimensional structure diagrams provided by the embodiments of the present invention;

[0026] Figure 3 It is a partial structure diagram of the elastic pressure plate provided by the embodiment of the present invention;

[0027] Figure 4-5 All are partial structure diagrams of the arc-shaped rod provided by the embodiments of the present invention;

[0028] Figure 6 It is an internal structure diagram of the rotating rod provided by the embodiment of the present invention;

[0029] Figure 7 It is a partial structure diagram of the wave plate provided by the embodiment of the present invention;

[0030] Figure 8 It is a partial structure diagram of the inner tube provided by the embodiment of the present invention;

[0031] Figure 9 It is a partial structure diagram of the first auger provided by the embodiment of the present invention.

[0032] Description of the reference numerals:

[0033] 1. Discharge frame; 2. Extrusion tube; 3. First feeding cylinder; 4. Second feeding cylinder; 51. Inner tube; 52. Heating rod; 53. First auger; 54. Second auger; 55. Inner rod; 551. Feeding port; 56. First discharge port; 57. Second discharge port; 61. Servo motor; 62. Friction disc; 63. Rotating ring; 64. Inner disc; 71. Elastic pressure plate; 72. Vertical rod; 73. Slide block; 74. Slide rod; 75. Variable rod; 76. Arc rod; 77. Side plate; 78. Rotating block; 79. Stop block; 710. Follow-up block; 81. Elastic pad; 82. Fluctuating plate; 83. Limit rod; 84. Arc block; 85. Screw; 86. Slot; 87. Connecting block; 91. Rotating rod; 92. Insertion rod; 93. Square plate; 94. Return spring; 95. Pull rod; 96. Pulling plate; 97. Convex block; 10. Cutting knife. Detailed implementation manners

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below in conjunction with the accompanying drawings.

[0035] Please refer to Figure 1-9 , a multi-layer polymer film co-extrusion molding device and molding method, including a discharge frame 1 and an extrusion tube 2 and an inner tube 51 installed thereon. A first feeding cylinder 3 is fixedly installed on the extrusion tube 2. A base is fixedly installed on the side wall of the discharge frame 1. A second feeding cylinder 4 is fixedly installed on the base. A servo motor 61 is fixedly installed on the base. The output end of the servo motor 61 is fixedly installed with a friction disc 62. The inner wall of the extrusion tube 2 is rotatably installed with a rotating ring 63. The inner wall of the rotating ring 63 is fixedly installed with an inner disc 64. An inner rod 55 is fixedly installed on the inner disc 64;

[0036] A first auger 53 is fixedly installed on the rotating ring 63. A second auger 54 is fixedly installed on the inner disc 64. And a heating rod 52 is fixedly installed inside the inner tube 51;

[0037] Wherein the friction disc 62 and the rotating ring 63 are in contact with each other, and the first auger 53 is located on the outer wall of the inner tube 51. At this time, a first extrusion channel is formed between the outer wall of the inner tube 51 and the extrusion tube 2. And the second auger 54 is fixedly installed on the inner rod 55. At this time, a second extrusion channel is formed between the inner rod 55 and the inner tube 51;

[0038] Wherein the materials in the first extrusion channel and the second extrusion channel can be heated and melted by the electric heating rod 52. At the same time, the servo motor 61 is started. At this time, the servo motor 61 will drive the friction disc 62 to rotate, and the friction disc 62 will drive the rotating ring 63 to rotate. As the rotating ring 63 rotates, it will drive the first auger 53 and the second auger 54 to rotate so as to push and send out the materials in the first extrusion channel and the second extrusion channel;

[0039] Among them, the power supply of the electric heating rod 52 can be connected through a circuit channel arranged at one end close to the discharge frame 1;

[0040] Among them, a part of the rotating ring 63 is arranged on the inner wall of the extrusion tube 2, and the size of the rotating ring 63 is adapted to the inner wall size of the extrusion tube 2, so that the rotating ring 63 supports one end of the inner rod 55 through the inner disc 64, and at the same time the other end of the inner rod 55 is rotatably installed on the inner tube 51.

[0041] In another embodiment of the present invention: a feeding tube is fixedly installed at the bottom end of the second feeding cylinder 4, and the other end of the feeding tube is communicated with the inner rod 55;

[0042] A feeding port 551 is opened on the inner rod 55;

[0043] Among them, the feeding tube is rotatably connected to the inner rod 55, so that feeding can be continuously carried out when the inner rod 55 rotates, and a plurality of feeding ports 551 are provided, and the plurality of feeding ports 551 are arranged in a circumferential array on the inner rod 55;

[0044] Among them, the bottom end of the feeding tube can be inclined, so that the material in the second feeding cylinder 4 flows into the inner rod 55.

[0045] In another embodiment of the present invention: a first discharge port 56 is opened on the extrusion tube 2, a second discharge port 57 is opened on the inner tube 51, and both the first discharge port 56 and the second discharge port 57 are communicated with the discharge frame 1;

[0046] Two discharge grooves are provided on the discharge frame 1, and the first discharge port 56 and the second discharge port 57 are respectively communicated with the two discharge grooves.

[0047] In another embodiment of the present invention: an elastic pressure plate 71 is installed on the inner top wall of the discharge groove, a slider 73 is vertically slidably installed on the inner wall of the discharge frame 1, and a vertical rod 72 is fixedly installed at the bottom end of the slider 73;

[0048] A variable rod 75 is horizontally slidably installed on the side wall of the discharge frame 1, and a slide rod 74 is installed on the variable rod 75;

[0049] An arc-shaped rod 76 is fixedly installed on the inner wall of the discharge frame 1, a side plate 77 is fixedly installed on the side wall of the arc-shaped rod 76, a rotating block 78 is rotatably installed on the side plate 77, and a rotating rod 91 is rotatably installed on the rotating block 78;

[0050] A screw rod 85 is threadedly installed on the arc-shaped rod 76, and a plug rod 92 inserted into the screw rod 85 is slidably installed on the rotating rod 91;

[0051] There are three screws 85. When the rotating block 78 is rotated, the angle of the rotating rod 91 in the vertical direction can be adjusted. When the rotating rod 91 is horizontal, rotating the rotating rod 91 will drive the inserting rod 92 to insert into the middle screw 85. At this time, the rotation of the rotating rod 91 will drive the screw 85 to move. As the screw 85 moves towards the variable rod 75, it will push the variable rod 75 to slide. At this time, the variable rod 75 will drive the two sliding rods 74 to move simultaneously. At this time, the two sliding rods 74 will simultaneously push the slider 73 to move downward, so that the two elastic pressure plates 71 are simultaneously bent downward, thereby controlling the notch size of the discharge chute, and thus controlling the thickness of the polymer film when it comes out;

[0052] The top end of the vertical rod 72 is in contact with the elastic pressure plate 71;

[0053] A convex block 97 is fixedly installed on the surface of the rotating rod 91, and it is convenient to rotate the rotating rod 91 through the convex block 97;

[0054] The ends of the slider 73 and the sliding rod 74 close to each other are provided with bevel edges.

[0055] In another embodiment of the present invention: a connecting block 87 is fixedly installed on the sliding rod 74, and the connecting block 87 is in a T shape, and the connecting block 87 slides through the middle of the variable rod 75;

[0056] Among them, referring to Figure 5 , when the variable rod 75 moves to the left, it will directly push the two sliding rods 74 to move. When the rotating block 78 is rotated to drive the rotating rod 91 to tilt upward, at this time, as the inserting rod 92 inserts into the upper screw 85, as the rotating rod 91 is rotated, it will drive the upper screw 85 to rotate through the inserting rod 92. At this time, the upper screw 85 will push the upper connecting block 87 to move. As the upper connecting block 87 moves, it will push the upper sliding rod 74 to move. At this time, the upper sliding rod 74 will push the upper slider 73 to move downward, so as to separately control the upper elastic pressure plate 71. Similarly, when the rotating rod 91 is rotated downward, it will separately control the lower elastic pressure plate 71;

[0057] The upper and lower screws 85 are respectively in contact with the two connecting blocks 87, referring to Figure 5 When the screw 85 moves to the left, it will push the connecting block 87 to move. When the screw 85 moves to the right, the elastic force of the elastic pressure plate 71 itself will increase, thereby pushing the slider 73 and the sliding rod 74 to slide back to their original positions.

[0058] In another embodiment of the present invention: a square slot 86 is opened on the screw 85, and the size of the inserting rod 92 is adapted to the size of the slot 86;

[0059] The plug rod 92 is inserted into the screw rod 85 through the slot 86. When the rotating rod 91 rotates, it will drive the screw rod 85 to rotate through the cooperation of the plug rod 92 and the slot 86. When the screw rod 85 moves, the plug rod 92 will move within the slot 86.

[0060] In another embodiment of the present invention: a square plate 93 is fixedly installed at the inner end of the rotating rod 91 where the plug rod 92 is located. A return spring 94 is fixedly installed between the square plate 93 and the rotating rod 91. A pull rod 95 is fixedly installed at the end of the square plate 93 away from the plug rod 92, and a pull plate 96 is fixedly installed on the pull rod 95.

[0061] When it is necessary to rotate the angle of the rotating rod 91 through the rotating block 78, first, the plug rod 92 is pulled outwards through the pull plate 96 and the pull plate 96, so that the plug rod 92 is removed from the slot 86 of the screw rod 85.

[0062] In another embodiment of the present invention: a follower block 710 is rotatably installed on the rotating rod 91, and the follower block 710 is slidably installed on the arc-shaped rod 76. A stop block 79 is fixedly installed on the arc-shaped rod 76.

[0063] When the angle of the rotating rod 91 is rotated through the rotating block 78, the rotating rod 91 will drive the follower block 710 to move synchronously. Until the follower block 710 abuts against the upper stop block 79, at this time, the plug rod 92 on the rotating rod 91 will be aligned with the slot 86 of the upper screw rod 85. Since both the plug rod 92 and the slot 86 are square, it is possible that the plug rod 92 is not inserted into the slot 86. But as the rotating rod 91 rotates, until the plug rod 92 and the slot 86 are aligned, at this time, the return spring 94 will push the plug rod 92 into the slot 86.

[0064] On the side wall of the arc-shaped rod 76, there is a wave plate 82. A limiting rod 83 is fixedly installed on the wave plate 82. The limiting rod 83 is inserted into the arc-shaped rod 76, and a connecting spring is fixedly installed between the limiting rod 83 and the arc-shaped rod 76. An elastic pad 81 is fixedly installed on the wave plate 82. Arc-shaped blocks 84 are fixedly installed at both ends of the two wave plates 82 close to each other.

[0065] When the follower block 710 approaches the arc-shaped block 84, its side wall will squeeze the arc-shaped block 84, causing it to drive the wave plate 82 to move outwards. At this time, the wave plate 82 will drive the elastic pad 81 to move outwards and away from the screw rod 85. When the follower block 710 moves away, at this time, the connecting spring will pull the limiting rod 83 and the wave plate 82 to move towards the screw rod 85. At this time, the elastic pad 81 will fit with the screw rod 85, and since the elastic pad 81 has elasticity, part of it will be stuck in the thread groove of the screw rod 85, so as to limit the movement of the thread groove as much as possible.

[0066] A cutting knife 10 is installed on the side wall of the discharge frame 1. After the plastic film comes out of the discharge slot, the excess parts on both sides of the plastic film can be cut off by the cutting knife 10. At the same time, the removed plastic film will fall into the collection frame on the side wall of the discharge frame 1 for recycling and reuse.

[0067] The forming method of the multi-layer polymer film co-extrusion molding equipment according to any one of the above includes the following steps:

[0068] S1. Place the respective materials in the first feeding cylinder 3 and the second feeding cylinder 4;

[0069] S2. Start the servo motor 61, so that it drives the rotating ring 63 to rotate through the friction disc 62. At this time, the first auger 53 and the second auger 54 will simultaneously convey the respective materials;

[0070] S3. Convey the molten materials into the discharge frame 1;

[0071] S4. After the molten materials enter the discharge frame 1, they pass through different discharge slots and are controlled in thickness under the respective elastic pressure plates 71 and then come out of the discharge frame 1.

[0072] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-layer polymer film co-extrusion molding device, comprising a discharge frame (1), an extrusion tube (2) and an inner tube (51) installed thereon. A first feeding cylinder (3) is fixedly installed on the extrusion tube (2), and a base is fixedly installed on the side wall of the discharge frame (1). A second feeding cylinder (4) is fixedly installed on the base, characterized in that, A servo motor (61) is fixedly installed on the base, a friction disc (62) is fixedly installed at the output end of the servo motor (61), a rotating ring (63) is rotatably installed on the inner wall of the extrusion pipe (2), an inner disc (64) is fixedly installed on the inner wall of the rotating ring (63), and an inner rod (55) is fixedly installed on the inner disc (64); A first auger (53) is fixedly installed on the rotating ring (63), a second auger (54) is fixedly installed on the inner disc (64), and a heating rod (52) is fixedly installed inside the inner pipe (51).

2. The multi-layer polymer film co-extrusion molding device according to claim 1, wherein A feeding pipe is fixedly installed at the bottom end of the second feeding cylinder (4), and the other end of the feeding pipe is communicated with the inner rod (55); A feeding port (551) is formed on the inner rod (55).

3. A multi-layer polymer film co-extrusion molding device according to claim 1, characterized in that, A first discharge port (56) is formed on the extrusion pipe (2), a second discharge port (57) is formed on the inner pipe (51), and both the first discharge port (56) and the second discharge port (57) are communicated with the discharge frame (1); Two discharge grooves are provided on the discharge frame (1), and the first discharge port (56) and the second discharge port (57) are respectively communicated with the two discharge grooves.

4. The multi-layer polymer film co-extrusion molding device according to claim 3, characterized in that, An elastic pressure plate (71) is installed on the inner top wall of the discharge groove, a slider (73) is vertically slidably installed on the inner wall of the discharge frame (1), and a vertical rod (72) is fixedly installed at the bottom end of the slider (73); A variable rod (75) is horizontally slidably installed on the side wall of the discharge frame (1), and a sliding rod (74) is installed on the variable rod (75); An arc-shaped rod (76) is fixedly installed on the inner wall of the discharge frame (1), a side plate (77) is fixedly installed on the side wall of the arc-shaped rod (76), a rotating block (78) is rotatably installed on the side plate (77), and a rotating rod (91) is rotatably installed on the rotating block (78); A screw rod (85) is threadedly installed on the arc-shaped rod (76), and a plug rod (92) inserted into the screw rod (85) is slidably installed on the rotating rod (91).

5. The multilayer polymer film coextrusion molding device according to claim 4, characterized in that, A connecting block (87) is fixedly installed on the sliding rod (74), and the connecting block (87) is in a T shape and slidably passes through the middle of the variable rod (75).

6. The multilayer polymer film coextrusion molding device according to claim 4, characterized in that, A square slot (86) is formed on the screw rod (85), and the size of the plug rod (92) is adapted to the size of the slot (86).

7. A multi-layer polymer film co-extrusion molding device according to claim 4, characterized in that, A square plate (93) is fixedly installed at one end of the plug rod (92) located inside the rotating rod (91), a return spring (94) is fixedly installed between the square plate (93) and the rotating rod (91), a pull rod (95) is fixedly installed at one end of the square plate (93) away from the plug rod (92), and a pull plate (96) is fixedly installed on the pull rod (95).

8. A multi-layer polymer film co-extrusion molding device according to claim 4, characterized in that, A follower block (710) is rotatably installed on the rotating rod (91), and the follower block (710) is slidably installed on the arc-shaped rod (76), and a stop block (79) is fixedly installed on the arc-shaped rod (76).

9. The forming method of a multi-layer polymer film co-extrusion forming device according to any one of claims 1-8, characterized in that, It includes the following steps: S1. Place the respective materials in the first feeding cylinder (3) and the second feeding cylinder (4) respectively; S2. Start the servo motor (61) so that it drives the rotating ring (63) to rotate through the friction disc (62). At this time, the first auger (53) and the second auger (54) will simultaneously convey each material; S3. Convey the molten material into the discharge frame (1); S4. After the molten material enters the discharge frame (1), it comes out of the discharge frame (1) through different discharge grooves and is controlled in thickness under each elastic pressure plate (71).

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