PE film blow molding machine

Abstract

The present invention belongs to the technical field of blow molding machines, especially blow molding machines for PE film processing, and the following scheme is proposed, including a spiral feeding barrel, a lower hopper and a blow molding head, and also including a cooling component; the cooling component is provided with two mounting frames, two pressure rollers 1 are rotatably arranged above the two mounting frames, and two pressure rollers 2 are rotatably arranged below the two mounting frames, and one end of one of the mounting frames is provided with a driving mechanism 1 at positions corresponding to pressure rollers 1 and 2; two rotating tubes are provided between the two mounting frames, and the two rotating tubes are respectively located at two sides of the film body, and the outer wall of the rotating tube is connected to a blowing head distributed in a circular array, and the blowing head extends in the horizontal direction. The present invention uses the blowing head to rotate so that the wind force acting on the side of the film body is inclined upward, thereby offsetting the influence of gravity on the surface of the film body when it is not completely cooled and shaped, so as to improve the quality of the finished product made of the film body.

Description

Technical Field

[0001] The invention relates to the technical field of blow molding machines, in particular to a blow molding machine for processing PE films. Background Art

[0002] The film blowing machine is a device that heats and melts PE plastic particles and then blows them into film. The blow molding machine used for PE film processing generally adds dry plastic particles into the lower hopper, and then pushes the plastic particles forward through the thrust of the screw. The molten plastic in the lower hopper and the spiral feeding barrel is blown and then cooled to form a film.

[0003] Referring to the Chinese patent with patent publication number CN111590869A, a blow molding machine for PE film processing is disclosed, whose structure includes a blow molding box, a box door, a feeding pipe, and a motor. The box door is installed on one side of the blow molding box, the bottom of the feeding pipe is embedded in the upper surface of the blow molding box, and the motor is installed above the blow molding box; the heating tube heats the heat storage cavity to increase the temperature inside, and conducts the heat to the inside of the heating cylinder through the heat conduction plate, thereby melting the plastic particles, and at the same time, the rotating plate heating tube rotates to make the heat of the inner wall of the heating cylinder uniform.

[0004] The above patent is the same as the conventional means of the prior art, which generally directly blows air to cool the film that is blown into sheets after being inflated. However, due to the high temperature just delivered and the effect of gravity, the film is easily unevenly distributed, affecting the quality of the finished product. Summary of the invention

[0005] Based on the technical problems of the background technology, the present invention proposes a blow molding machine for PE film processing.

[0006] The blow molding machine for PE film processing proposed by the present invention comprises a spiral feeding barrel, a lower hopper and a blow molding head, and also comprises a cooling component; the lower hopper is connected to the top position of the spiral feeding barrel, the blow molding head is connected to the discharge port position of the spiral feeding barrel, and the film body is delivered from the bottom of the blow molding head; the cooling component is provided with two mounting frames, two pressure rollers 1 are rotatably arranged above between the two mounting frames, and two pressure rollers 2 are rotatably arranged below between the two mounting frames, and one end of one of the mounting frames is provided with a driving mechanism 1 at positions corresponding to the pressure rollers 1 and 2; two rotating tubes are provided between the two mounting frames, the two rotating tubes are respectively located at two sides of the film body, and the outer wall of the rotating tube is connected with blowing heads distributed in a ring array, the blowing head extends in the horizontal direction, one end of the two rotating tubes is transmission-connected with the same driving mechanism 2, the position of the rotating tube close to the film body moves from bottom to top, and the outer wall of one end of the rotating tube away from the driving mechanism 2 is rotatably connected with a fixed tube, and the fixed tube is fixedly connected to the mounting frame.

[0007] Preferably, the rotating tube is arranged at a position close to the pressure roller one, two baffles are arranged between the two mounting frames, the baffle is arranged between the rotating tube and the pressure roller two, the two baffles are respectively arranged at two sides of the membrane body, and the side walls of the baffles are connected to multiple blowing pipes, which blow cold air toward the membrane body.

[0008] Preferably, a flattening piece 1 and a flattening piece 2 are provided on one side of the baffle close to the membrane body, and the flattening piece 1 is located above the flattening piece 2. The flattening piece 1 and the flattening piece 2 are both provided with a rotating belt and two rotating rollers, the rotating belt is rotatably connected to the two rotating rollers, and the two ends of the rotating rollers are rotatably connected to the mounting frame.

[0009] Preferably, the side wall of the rotating belt away from the baffle is in contact with the outer wall of the membrane body, and a gear is provided at the end of each of the two flattening pieces 1 and the two flattening pieces 2. The gear is fixed to the outer wall of the rotating roller, and the four gears are meshed in sequence. A driving mechanism 3 is fixed to the outer wall of one of the mounting frames, and the driving mechanism 3 is connected to the end of one of the rotating rollers in a transmission manner.

[0010] Preferably, a horizontally placed fixing bar is provided in the rotating belt, fixing plates are fixed between the two ends of the fixing bar and the mounting frame, a plurality of connecting rings are provided between the two fixing plates, and connecting rods are fixed between two adjacent connecting rings and between the connecting rings and the fixing plates.

[0011] Preferably, the inner wall of the connecting ring is slidably connected with a horizontally placed movable block, both ends of the movable block are in contact with the inner walls on both sides of the rotating belt, and the top of the movable block is located on both sides of the connecting ring and is connected with elastic ropes, and the top of the elastic rope is fixed between the fixed bar.

[0012] Preferably, a positioning block is fixed to the bottom end of one side of the baffle close to the membrane body, a limiting rod is fixed to the top of the positioning block, a slider is slidably connected to the outer wall of the limiting rod, and a spring is connected between the bottom of the slider and the positioning block.

[0013] Preferably, a vertical plate extending downward is fixed to one side of the bottom of the slider close to the baffle, the outer wall of the vertical plate is in sliding contact with the outer wall of the baffle, and the blowing pipes are distributed at equal distances on the baffle, and the blowing pipes are distributed at both ends of the vertical plate.

[0014] Preferably, both ends of the vertical plate are fixed with horizontally placed extension plates, the outer walls of the extension plates are in sliding contact with the outer walls of the baffle plates, and the two extension plates are arranged between the blowing pipes in a normal state.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the rotating tube is rotated and the side of the rotating tube close to the film body is rotated from bottom to top, so that the wind force acting on the side of the film body is inclined upward through the blowing of the blowing head, thereby offsetting the influence of gravity on the surface of the film body when it is not completely cooled and shaped, thereby preventing the film body from being excessively affected by gravity during the cooling and shaping process of the film body, thereby improving the quality of the finished product made of the film body.

[0017] 2. In the present invention, by meshing four gears in sequence, two rotating belts in the same horizontal direction move vertically in the same direction near the membrane body, while two adjacent rotating belts in the vertical direction move in opposite directions near the membrane body, so that the membrane body is subjected to the same friction force in the vertical direction in the horizontal position to improve the flatness, and the rotating belts rotating in the opposite direction in the vertical direction are used to improve the dispersion effect of the airflow blown by the blowing pipe, thereby further improving the cooling efficiency and cooling and shaping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the PE film processing blow molding machine proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the cooling assembly structure of the PE film blow molding machine proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the distribution structure of the pressure roller 1, the pressure roller 2 and the rotating tube of the blow molding machine for PE film processing proposed by the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the rotating rod and the blowing head of the blow molding machine for PE film processing proposed by the present invention;

[0022] Figure 5 This is a schematic structural diagram of a flattening part 1 and a flattening part 2 of a blow molding machine for PE film processing proposed by the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the rotating belt and rotating roller of the blow molding machine for PE film processing proposed by the present invention;

[0024] Figure 7 This is a schematic structural diagram of the connecting ring, connecting rod and movable block of the PE film processing blow molding machine proposed by the present invention;

[0025] Figure 8 This is a schematic diagram of the baffle structure of the blow molding machine for PE film processing proposed by the present invention.

[0026] In the figure: 1 spiral feeding barrel, 2 lower hopper, 3 blowing head, 4 film body, 5 cooling assembly, 6 mounting frame, 7 pressure roller 1, 8 pressure roller 2, 9 driving mechanism 1, 10 fixed pipe, 11 rotating pipe, 111 blowing head, 12 driving mechanism 2, 13 flat piece 1, 14 flat piece 2, 15 rotating belt, 16 rotating roller, 17 gear, 18 driving mechanism 3, 19 baffle, 20 blowing pipe, 21 fixed strip, 22 fixed plate, 23 connecting ring, 24 connecting rod, 25 movable block, 26 elastic rope, 27 positioning block, 28 limiting rod, 29 slider, 30 spring, 31 vertical plate, 32 extension plate. DETAILED DESCRIPTION

[0027] Example 1: Reference Figure 1-Figure 5, a blow molding machine for PE film processing, comprising a spiral feeding barrel 1, a lower hopper 2 and a blow molding head 3, and also comprising a cooling assembly 5; the lower hopper 2 is connected to the top position of the spiral feeding barrel 1, the blow molding head 3 is connected to the discharge port position of the spiral feeding barrel 1, the film body 4 is sent out from the lower part of the blow molding head 3, and the cooling assembly 5 is arranged at the lower position of the blow molding head 3; the cooling assembly 5 is provided with two mounting frames 6, the two mounting frames 6 are respectively arranged at the two end positions of the film body 4, two pressure rollers 7 are rotatably arranged above the two mounting frames 6, the two pressure rollers 7 are respectively located at the two sides of the film body 4, and two are rotatably arranged below the two mounting frames 6 A pressure roller 2 8 is provided, and the two pressure rollers 2 8 are respectively located at the two sides of the film body 4. A driving mechanism 1 9 is provided at one end of one mounting frame 6 and at the positions corresponding to the pressure roller 1 7 and the pressure roller 2 8. One end of the pressure roller 1 7 and the pressure roller 2 8 is connected to the driving mechanism 1 9 in a transmission manner. Two rotating tubes 11 are provided between the two mounting frames 6. The two rotating tubes 11 are respectively located at the two sides of the film body 4. The rotating tubes 11 are placed horizontally. The circumferential outer wall of the rotating tube 11 is connected to a blowing head 111 distributed in a circular array. The blowing head 111 is connected to the inside of the rotating tube 11. The blowing head 111 is extended in the horizontal direction. One end of the two rotating tubes 11 is connected to the transmission mechanism 1 It is connected to the same driving mechanism 2 12, the rotating tube 11 moves from bottom to top near the film body 4, and the outer wall of the rotating tube 11 at one end away from the driving mechanism 2 12 is rotatably connected to the fixed tube 10, and the fixed tube 10 is fixedly connected to the mounting frame 6. When in use, the plastic particles are continuously fed into the spiral feeding cylinder 1 in the lower hopper 2, and the plastic particles are melted by heating the lower hopper 2 or the spiral feeding cylinder 1, and then a continuous film structure is formed at the position of the blow molding head 3 for delivery. This part belongs to the conventional technical means in this field, so it will not be described in detail; the film delivered from the blow molding head 3 passes through the pressure roller 1 7 and the pressure roller 2 8 in turn, and passes through The upper pressing roller 7 performs preliminary shaping, and is connected to a cooling air machine through a fixed tube 10 to blow air toward both sides of the film body 4 from multiple blowing heads 111 outside the rotating tube 11 to cool and shape it. During the blowing and cooling process, the rotating tube 11 is rotated and the side of the rotating tube 11 close to the film body 4 is rotated from bottom to top, so that the blowing of the blowing head 111 is in a rotating state so that the wind force acting on the side of the film body 4 is inclined upward, thereby offsetting the influence of gravity on the surface of the film body 4 when it is not completely cooled and shaped, thereby avoiding excessive influence of gravity on the film body 4 during the cooling and shaping process of the film body 4, so as to improve the quality of the finished product made of the film body 4.

[0028] In the present invention, reference is made to Figure 1-Figure 5, the pressure roller 1 7 is arranged at a position close to the blow molding head 3, the rotating tube 11 is arranged at a position close to the pressure roller 1 7, two baffles 19 are arranged between the two mounting frames 6, the baffle 19 is arranged between the rotating tube 11 and the pressure roller 2 8, the two baffles 19 are respectively arranged on both sides of the film body 4, the two ends of the baffle 19 are fixedly connected to the two mounting frames 6, and the side walls of the baffle 19 are connected to multiple blowing pipes 20, and the blowing pipes 20 blow cold air toward the film body 4. Through the rotatable blowing head 111 arranged from top to bottom and the vertically distributed blowing pipes 20, the film body 4 moving from top to bottom is cooled, so as to improve the cooling and shaping operation effect and the cooling efficiency.

[0029] In the present invention, reference is made to Figure 1-Figure 7 , a flattening piece 13 and a flattening piece 2 14 are arranged on one side of the baffle 19 close to the membrane body 4, the flattening piece 13 is located above the flattening piece 2 14, the flattening piece 13 and the flattening piece 2 14 are both provided with a rotating belt 15 and two rotating rollers 16, the rotating belt 15 is rotatably connected with the two rotating rollers 16, the rotating belt 15 moves vertically between the two rotating rollers 16, the two ends of the rotating rollers 16 are rotatably connected with the mounting frame 6, the outer wall of the mounting frame 6 corresponding to the rotating rollers 16 is provided with rotating holes, the side wall of the rotating belt 15 away from the baffle 19 contacts the outer wall of the membrane body 4, the ends of the two flattening pieces 13 and the two flattening pieces 2 14 are both provided with a gear 17, the gear 17 is fixed to the outer wall of the rotating roller 16, the four gears 17 are meshed in sequence, a driving mechanism 3 18 is fixed to the outer wall of one of the mounting frames 6, the driving mechanism 3 18 is transmission-connected to the end of one of the rotating rollers 16, and when in use, the driving mechanism 3 18 is used to make The four rotating belts 15 move on the outer wall of the membrane body 4. On the one hand, the vertical movement of the rotating belts 15 on the outer wall of the membrane body 4 is used to smooth the membrane body 4 to improve the quality of the finished product. On the other hand, the rotating belts 15 cooled by the cold air blown by the blowing pipe 20 are rotated to contact the side wall of the membrane body 4, thereby improving the cooling and shaping efficiency of the membrane body 4 through solid contact; and through the sequential meshing of the four gears 17, the two rotating belts 15 in the same horizontal direction are vertically moved in the same direction near the membrane body 4, and the two adjacent rotating belts 15 in the vertical direction are moved in the opposite direction near the membrane body 4, so that the membrane body 4 is subjected to the same friction force in the vertical direction at the horizontal position to improve the flatness, and is subjected to a vertical reverse force between the flattening piece 13 and the flattening piece 2 14 to improve the flattening effect; and the rotating belts 15 rotating in the opposite direction in the vertical direction are used to improve the dispersion effect of the airflow blown by the blowing pipe 20, thereby further improving the cooling efficiency and the cooling and shaping effect.

[0030] In the present invention, reference is made to Figure 1-Figure 7A horizontally placed fixing strip 21 is arranged in the rotating belt 15, and fixing plates 22 are fixed between the two ends of the fixing strip 21 and the mounting frame 6, and a plurality of connecting rings 23 are arranged between the two fixing plates 22, and connecting rods 24 are fixed between two adjacent connecting rings 23 and between the connecting rings 23 and the fixing plates 22, and a horizontally placed movable block 25 is slidably connected to the inner wall of the connecting ring 23, and the two ends of the movable block 25 are in contact with the inner walls of both sides of the rotating belt 15, and the top of the movable block 25 is located on both sides of the connecting ring 23 and is connected to elastic ropes 26, and the elastic ropes 26 are connected to the two sides of the connecting ring 23. The top of the force rope 26 is fixed to the fixed strip 21, and the movable block 25 slidingly arranged in the connecting ring 23 is limited by the elastic ropes 26 on both sides. When the surface of the membrane body 4 bulges, the corresponding rotating belt 15 and the movable block 25 in the rotating belt 15 are squeezed outward, and the movable block 25 pushes the other side of the rotating belt 15 outward to make the part of the rotating belt 15 close to the membrane body 4 return toward the direction of the membrane body 4, and the elastic force of the elastic rope 26 is used to make the movable block 25 return and assist in leveling the membrane body 4, thereby improving the quality of the blow-molded product.

[0031] Embodiment 2: Embodiment 2 includes all structures and methods of Embodiment 1, with reference to Figure 1-Figure 8 The blow molding machine for PE film processing also includes a positioning block 27 fixed to the bottom end of the baffle 19 on one side close to the film body 4, a limiting rod 28 fixed to the top of the positioning block 27, a slider 29 slidably connected to the outer wall of the limiting rod 28, a spring 30 is connected between the bottom of the slider 29 and the positioning block 27, a vertical plate 31 extending downward is fixed to the side of the bottom of the slider 29 close to the baffle 19, the outer wall of the vertical plate 31 is in sliding contact with the outer wall of the baffle 19, the blowing pipes 20 are distributed at equal distances on the baffle 19, the blowing pipes 20 are distributed at both ends of the vertical plate 31, and horizontally placed extension plates 32 are fixed to both ends of the vertical plate 31, the outer wall of the extension plate 32 is in sliding contact with the outer wall of the baffle 19, and the two sides are in normal state. An extension plate 32 is arranged at a position between the blowing pipes 20. When in use, when the rotating tube 11 above the baffle 19 rotates with the blowing head 111 and blows air for cooling, the blowing head 111 rotates to the bottom at intervals and blows air toward the top of the slider 29. Under the action of wind force, the slider 29 is pressed down at intervals, and under the action of the spring 30, the slider 29, the vertical plate 31 and the extension plate 32 reciprocate in the vertical direction, so that the extension plate 32 blocks the pipe opening of the blowing pipe 20 at intervals, so that the blowing disturbance of the blowing pipe 20 toward the rotating belt 15 is dispersed, thereby avoiding the heat concentration on the periphery of the rotating belt 15, which makes it difficult to dissipate quickly, thereby further improving the cooling and shaping effect and efficiency of the membrane body 4.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A blow molding machine for PE film processing, comprising a screw feeding barrel (1), a lower hopper (2) and a blow molding head (3), characterized in that: Also included is a cooling component (5); The lower hopper (2) is connected to the top of the spiral feeding barrel (1), the blow molding head (3) is connected to the discharge port of the spiral feeding barrel (1), and the film body (4) is delivered from below the blow molding head (3); The cooling assembly (5) is provided with two mounting frames (6), two pressure rollers (7) are rotatably arranged above the two mounting frames (6), and two pressure rollers (8) are rotatably arranged below the two mounting frames (6), and a driving mechanism (9) is provided at a position corresponding to the pressure rollers (7) and (8) at one end of one of the mounting frames (6); Two rotating tubes (11) are arranged between the two mounting frames (6), and the two rotating tubes (11) are respectively located at two sides of the membrane body (4). The outer wall of the rotating tube (11) is connected to a blowing head (111) distributed in a circular array, and the blowing head (111) extends in the horizontal direction. One end of the two rotating tubes (11) is transmission-connected to the same driving mechanism 2 (12). The rotating tube (11) moves from bottom to top when it is close to the membrane body (4), and the rotating tube (11) moves away from the driving mechanism. The outer wall of one end of the second roller (12) is rotatably connected to a fixed tube (10), and the fixed tube (10) is fixedly connected to the mounting frame (6); the rotating tube (11) is arranged near the first pressure roller (7), and two baffles (19) are arranged between the two mounting frames (6), and the baffles (19) are arranged between the rotating tube (11) and the second pressure roller (8). The two baffles (19) are respectively arranged at two sides of the membrane body (4), and the side walls of the baffles (19) are connected to a plurality of blowing tubes (2 0), the blowing pipe (20) blows cold air in the direction of the membrane body (4), the baffle (19) is provided with a flattening piece 1 (13) and a flattening piece 2 (14) at a side position close to the membrane body (4), the flattening piece 1 (13) is located above the flattening piece 2 (14), the flattening piece 1 (13) and the flattening piece 2 (14) are both provided with a rotating belt (15) and two rotating rollers (16), the rotating belt (15) is rotatably connected to the two rotating rollers (16), and the two ends of the rotating rollers (16) are connected to the mounting frame (6 ), the side wall of the rotating belt (15) away from the baffle (19) contacts the outer wall of the membrane body (4), a gear (17) is provided at the end of each of the two flattening pieces (13) and the two flattening pieces (14), the gear (17) is fixed to the outer wall of the rotating roller (16), and the four gears (17) are meshed in sequence, and a driving mechanism (18) is fixed to the outer wall of one of the mounting frames (6), and the driving mechanism (18) is connected to the end of one of the rotating rollers (16) in a transmission manner.

2. The PE film processing blow molding machine according to claim 1, characterized in that: A horizontally placed fixing strip (21) is arranged in the rotating belt (15); fixing plates (22) are fixed between the two ends of the fixing strip (21) and the mounting frame (6); a plurality of connecting rings (23) are arranged between two fixing plates (22); and connecting rods (24) are fixed between two adjacent connecting rings (23) and between a connecting ring (23) and the fixing plate (22).

3. The PE film processing blow molding machine according to claim 2, characterized in that: The inner wall of the connecting ring (23) is slidably connected to a horizontally placed movable block (25), the two ends of the movable block (25) are in contact with the inner walls of the rotating belt (15) on both sides, the top of the movable block (25) is located on both sides of the connecting ring (23) and is connected to elastic ropes (26), the top of the elastic rope (26) is fixed to the fixing strip (21).

4. The PE film processing blow molding machine according to any one of claims 1 to 3, characterized in that: A positioning block (27) is fixed to the bottom end of one side of the baffle (19) close to the membrane body (4), a limiting rod (28) is fixed to the top of the positioning block (27), a sliding block (29) is slidably connected to the outer wall of the limiting rod (28), and a spring (30) is connected between the bottom of the sliding block (29) and the positioning block (27).

5. The PE film processing blow molding machine according to claim 4, characterized in that: A vertical plate (31) extending downward is fixed to one side of the bottom of the sliding block (29) close to the baffle (19); the outer wall of the vertical plate (31) is in sliding contact with the outer wall of the baffle (19); the blowing pipes (20) are distributed at equal distances on the baffle (19); and the blowing pipes (20) are distributed at both ends of the vertical plate (31).

6. The PE film processing blow molding machine according to claim 5, characterized in that: Both ends of the vertical plate (31) are fixed with horizontally placed extension plates (32), the outer wall of the extension plate (32) is in sliding contact with the outer wall of the baffle plate (19), and in a normal state, the two extension plates (32) are arranged between the blowing pipes (20).

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