High-barrier co-extrusion film production equipment

Abstract

The utility model discloses high-barrier co-extrusion film production equipment which comprises a bracket, an exchange cylinder, a flattening cylinder and a transition pipe, the support is of two groups of vertical plate-shaped structures, an exchange cylinder is rotatably matched on the support through a bearing, a flattening cylinder is rotatably matched on the support through a distance adjusting mechanism, shaft rods of the exchange cylinder and the flattening cylinder are both of round pipe structures, and the shaft rod on one side of the exchange cylinder is connected with an input pipe through a rotary joint. A shaft rod of the flattening cylinder is connected with an output pipe through a rotary joint on the same side of the input pipe, the sides, away from the input pipe, of the flattening cylinder are connected to the two ends of the transition pipe through rotary joints, and a power roller and a feeding roller with the axis parallel to the axis of the exchange cylinder are rotationally matched on the support; a power mechanism for providing rotation power for the power roller is arranged on the support, and the feeding roller is arranged on the side, away from the power roller, of the support; the cooling device has the beneficial effects that direct contact with water flow is avoided during cooling, and a drying mechanism with high use cost is omitted.

Description

Technical Field

[0001] The utility model belongs to the technical field of co-extrusion film production, in particular to high-barrier co-extrusion film production equipment. Background Art

[0002] Plastic film has developed into one of the plastic products with the largest output and the most varieties in my country. It is widely used in packaging, electronic appliances, agriculture, architectural decoration and daily necessities, and its output accounts for about 20% of the total output of plastic products. From the perspective of application fields, the most widely used plastic film is the packaging industry, followed by agricultural plastic film, and the rest are used as electrical materials, photosensitive materials, etc. In addition to traditional PE, PVC, and PS, BOPE (biaxially oriented polyester film), BOPP (biaxially oriented polypropylene film), and BOPA (biaxially oriented nylon film) are new film materials that have developed rapidly in recent years; with the development of science and technology, the application of homogeneous materials has been restricted. In order to improve the comprehensive performance of the film, the stretched film adopts multi-layer co-extrusion to produce multifunctional films that can meet more uses, such as high barrier films.

[0003] The patent document with the publication number CN206598531U discloses a water-cooled film co-extrusion blow molding device, including: a co-extrusion mechanism, which includes a die head and multiple extruders; an external water cooling mechanism, which includes a water tank, an external water tank, a first water inlet pipe, a control valve and an external cooling cloth; an internal water cooling mechanism, which includes an internal water tank, a second water inlet pipe, a water pump and an internal cooling cloth, the upper end of the internal cooling cloth extends into the internal water tank, and an annular gap is formed between the internal cooling cloth and the external cooling cloth; a molding mechanism, which includes two heating plates and two extrusion guide rollers; a rolling mechanism, which includes a transition guide roller and a winding roller. The external water cooling mechanism and the internal water cooling mechanism of the utility model respectively form a wet external cooling cloth and an internal cooling cloth, and cool the outer surface and the inner surface of the tubular film respectively, which is conducive to the cooling and molding effect, and also avoids the formation of water stains on the film caused by the cold shower of open water, and uses a V-shaped heating plate to dry the two sides of the formed film respectively to avoid the formation of water marks on the film.

[0004] The drying of the above co-extruded film production equipment relies on water flow to directly cool the film surface. After the cooling is completed, the water flow is dried by a drying device. When the above equipment is implemented, a separate set of drying equipment needs to be set up to dry the co-extruded film, which increases the equipment cost. At the same time, the drying equipment has high energy consumption and high use cost. Utility Model Content

[0005] The utility model aims to provide a high barrier co-extrusion film production device to solve the technical problem in the above background technology that the equipment and use costs are too high due to the need to set up a drying mechanism.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] The high-barrier co-extruded film production equipment comprises: a bracket, an exchange cylinder, a flattening cylinder, and a transition tube; the bracket is two groups of vertical plate-like structures, the bracket is rotatably equipped with an exchange cylinder through a bearing, and the bracket is rotatably equipped with a flattening cylinder through a distance adjustment mechanism, the axis lines of the exchange cylinder and the flattening cylinder are arranged in parallel, the shafts of the exchange cylinder and the flattening cylinder are both circular tube structures, the circular tube structure and the interior of the exchange cylinder and the flattening cylinder are conductive, the shaft on one side of the exchange cylinder is connected to an input tube through a rotating joint, the shaft of the flattening cylinder is connected to an output tube through a rotating joint on the same side of the input tube, the side of the exchange cylinder and the flattening cylinder away from the input tube is connected to the two ends of the transition tube through a rotating joint, the bracket is rotatably equipped with a power roller and a feed roller whose axis lines are parallel to the axis line of the exchange cylinder, the bracket is provided with a power mechanism for providing rotational power to the power roller, and the feed roller is arranged on the side of the bracket away from the power roller.

[0008] Furthermore, in order to increase the heat exchange area between the film to be cooled and the exchange cylinder, a return roller having an axis parallel to the axis of the exchange cylinder is rotatably matched on the bracket, and the return roller is set on the side of the exchange cylinder away from the power roller.

[0009] Furthermore, in order to adjust the distance between the exchange cylinder and the flattening cylinder according to the thickness of the film to be cooled, the distance adjusting mechanism includes: a deflection shaft, a deflection rod, a servo electric cylinder, a rod frame, and a reinforcement rod. There are two groups of deflection rods, and the two groups of deflection rods are respectively rotated and fitted on the same side brackets through the deflection shaft, and the side of the deflection rod away from the deflection shaft is rotated and fitted with the flattening cylinder through the bearing and the shaft rod; the extended end of the servo electric cylinder is rotationally fitted with the middle part of the deflection rod, and the non-extended end of the servo electric cylinder is rotationally fitted with the bracket on the same side.

[0010] Furthermore, in order to accurately determine the distance between the exchange cylinder and the flattening cylinder, a movable seat with a block structure is fixed on the deflection rod, a fixed seat is fixed on the bracket through the mounting seat, and a distance sensor is provided between the fixed seat and the movable seat.

[0011] Furthermore, in order to increase the stability and synchronization of the eccentric rods matched with the flattening cylinder, the eccentric rods are connected and fixed by a rod-shaped reinforcing rod, and the axis of the reinforcing rod is parallel to the axis of the flattening cylinder.

[0012] Furthermore, in order to make the power roller have a stable large torque output capacity, the power mechanism includes: a reducer, a motor, the power roller and the output shaft of the reducer are coaxially fixed, the reducer is fixed on the bracket on the same side thereof, a motor is fixed on the reducer, and the output shaft of the motor and the input shaft of the reducer are coaxially fixed.

[0013] Furthermore, in order to prevent the transition pipe from affecting the movement of the flattening cylinder when the distance between the exchange cylinder and the flattening cylinder is adjusted, the transition pipe is made of a hose.

[0014] Furthermore, in order to increase the film transporting capacity of the power roller, the power roller is provided with circumferentially distributed anti-slip grooves.

[0015] In summary, the utility model has the following beneficial effects:

[0016] ① The co-extruded film is cooled directly during the co-extruded film conveying process without direct contact with the water flow, thus omitting the drying mechanism with high use cost: through the establishment of the exchange cylinder and the flattening cylinder; when the film to be cooled is co-extruded and blown out, it is conveyed to the feed roller, and the film to be cooled is conveyed and coated on the exchange cylinder for heat energy exchange, and the cold water enters the exchange cylinder from the input pipe, and the heat on the film to be cooled is input to the cold water in the exchange cylinder by the cylinder wall of the exchange cylinder, and the film to be cooled is cooled at this time, and then the film to be cooled can be quickly cooled during the conveying process of the film to be cooled, and the cooling does not need to be immersed in water, thus omitting the subsequent drying equipment and processes, and the motor drives the cooled film to be cooled to move through the reducer, thus completing the streamlined cooling operation of the film to be cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the bottom structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the reinforcement rod in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the distance adjustment mechanism and the distance sensing mechanism of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the exchange cylinder and the flattening cylinder in the utility model;

[0022] Figure 6 It is a schematic diagram of the cooling principle of the co-extruded film of the utility model.

[0023] In the figure, 1. bracket; 2. exchange cylinder; 3. flattening cylinder; 4. power mechanism; 5. distance adjustment mechanism; 6. distance sensing mechanism; 7. rotary joint; 8. transition pipe; 9. power roller; 10. input pipe; 11. output pipe; 12. feed roller; 13. return roller; 14. film to be cooled; 41. reducer; 42. motor; 51. deflection shaft; 52. deflection rod; 53. servo electric cylinder; 54. rod holder; 55. reinforcement rod; 61. movable seat; 62. mounting seat; 63. fixed seat; 64. distance sensor; 91. anti-slip pattern. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] Example:

[0026] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0027] The high barrier co-extruded film production equipment comprises: a bracket 1, an exchange cylinder 2, a flattening cylinder 3, and a transition tube 8; the bracket 1 is two groups of vertical plate-like structures, the bracket 1 is rotatably matched with an exchange cylinder 2 through a bearing, and the bracket 1 is rotatably matched with a flattening cylinder 3 through a distance adjustment mechanism 5, the axis lines of the exchange cylinder 2 and the flattening cylinder 3 are arranged in parallel, the shafts of the exchange cylinder 2 and the flattening cylinder 3 are all circular tube structures, the circular tube structure and the interior of the exchange cylinder 2 and the flattening cylinder 3 are conductive, the shaft on one side of the exchange cylinder 2 is connected to an input tube 10 through a rotating joint 7, the shaft of the flattening cylinder 3 is connected to an output tube 11 on the same side of the input tube 10 through the rotating joint 7, the side of the exchange cylinder 2 and the flattening cylinder 3 away from the input tube 10 is connected to the two ends of the transition tube 8 through the rotating joint 7, the bracket 1 is rotatably matched with a power roller 9 and a feed roller 12 whose axis lines are parallel to the axis line of the exchange cylinder 2, the bracket 1 is provided with a power mechanism 4 for providing rotational power to the power roller 9, and the feed roller 12 is arranged on the side of the bracket 1 away from the power roller 9.

[0028] The bracket 1 is rotatably matched with a return roller 13 whose axis is parallel to the axis of the exchange drum 2 . The return roller 13 is set on the side of the exchange drum 2 away from the power roller 9 .

[0029] The distance adjustment mechanism 5 includes: a deflection shaft 51, a deflection rod 52, a servo electric cylinder 53, a rod frame 54, and a reinforcement rod 55. There are two groups of deflection rods 52. The two groups of deflection rods 52 are respectively rotated and matched on the bracket 1 on the same side through the deflection shaft 51. The side of the deflection rod 52 away from the deflection shaft 51 is rotated and matched with the flattening cylinder 3 through a bearing and an axle rod (axle rod of a circular tube structure); the extended end of the servo electric cylinder 53 is rotated and matched with the middle part of the deflection rod 52, and the non-extended end of the servo electric cylinder 53 is rotated and matched with the bracket 1 on the same side.

[0030] A movable seat 61 of a block-shaped structure is fixed on the deflection rod 52, a fixed seat 63 is fixed on the bracket 1 through the mounting seat 62, and a distance sensor 64 is provided between the fixed seat 63 and the movable seat 61 (the type of the distance sensor 64 is not limited, and the capacitive proximity switch model PUBNNG--CBT12 can be referred to).

[0031] The deflection rods 52 are connected and fixed by a rod-shaped reinforcing rod 55 , and the axis of the reinforcing rod 55 is parallel to the axis of the flattening cylinder 3 .

[0032] The power mechanism 4 includes: a reducer 41 and a motor 42. The power roller 9 and the output shaft of the reducer 41 are coaxially fixed. The reducer 41 is fixed on the bracket 1 on the same side thereof. A motor 42 is fixed on the reducer 41. The output shaft of the motor 42 and the input shaft of the reducer 41 are coaxially fixed.

[0033] The transition pipe 8 is made of a hose.

[0034] The power roller 9 is provided with anti-skid patterns 91 distributed circumferentially.

[0035] Brief description of the usage process:

[0036] When using, Figure 6 As described, the film 14 to be cooled is wrapped around the bottom of the feed roller 12, then passes through the gap between the exchange cylinder 2 and the flattening cylinder 3, then wraps around the exchange cylinder 2 and folds back to the return roller 13 side (increasing the heat exchange area between the exchange cylinder 2 and the film 14 to be cooled), then wraps around the return roller 13 and extends toward the power roller 9 side, then is pulled out tangently from above or below the power roller 9, a cold water inlet pipe is connected at the input pipe 10, a water outlet pipe or a heat recovery pipe is connected at the output pipe 11, and a film collection mechanism is arranged outside the power roller 9 side;

[0037] After the film 14 to be cooled is co-extruded and blown out, it is conveyed to the feed roller 12. The film 14 to be cooled is coated on the exchange cylinder 2 according to the above-mentioned conveying method for heat energy exchange. Cold water enters the exchange cylinder 2 from the input pipe 10. The heat on the film 14 to be cooled is input to the cold water in the exchange cylinder 2 by the cylinder wall of the exchange cylinder 2. At this time, the film 14 to be cooled is cooled. The heat-absorbing water flow enters the flattening cylinder 3 from the transition pipe 8 and is then discharged from the output pipe 11 connected to the flattening cylinder 3. Therefore, the film 14 to be cooled can be quickly cooled during the conveying process of the film 14 to be cooled, and the cooling does not need to be immersed in water, and the subsequent drying process is omitted. The motor 42 drives the cooled film 14 to move through the reducer 41, and the flow-line cooling operation of the film 14 to be cooled is completed.

[0038] While the film 14 to be cooled is being transported, the flattening cylinder 3 is pressed tightly against the exchange cylinder 2. To ensure the fit between the film 14 to be cooled and the exchange cylinder 2 and the heat exchange area, the distance between the exchange cylinder 2 and the flattening cylinder 3 is consistent with the thickness of the film 14 to be cooled (if the distance is too large, the film 14 to be cooled and the exchange cylinder 2 are not firmly fitted, and the heat exchange area cannot be guaranteed; if the distance is too small, the film 1 to be cooled is easily crushed);

[0039] When it is necessary to produce cooling films 14 of different thicknesses, it is necessary to adaptively adjust the spacing between the exchange cylinder 2 and the flattening cylinder 3. During the adjustment, an external controller is used to drive the servo electric cylinder 53 to extend or shorten, and the servo electric cylinder 53 drives the deflection rod 52 to deflect around the deflection axis 51, and then the flattening cylinder 3 matched on the deflection rod 52 follows the deflection, thereby adjusting the spacing between the exchange cylinder 2 and the flattening cylinder 3.

[0040] When adjusting the spacing between the exchange cylinder 2 and the flattening cylinder 3, the distance between the fixed seat 63 on the bracket 1 and the movable seat 61 on the deflection rod 52 changes, and the specific value of the change is measured and recorded by the distance sensor 64. The data of the distance sensor 64 can be used to accurately adjust the spacing between the exchange cylinder 2 and the flattening cylinder 3 by conversion (since the size of the utility model is not determined, the conversion formula is omitted here) to ensure that the spacing between the exchange cylinder 2 and the flattening cylinder 3 is consistent with the thickness of the film to be cooled 14, thereby ensuring the fit between the cooling film 14 and the exchange cylinder 2 and the heat exchange area.

[0041] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. High barrier co-extrusion film production equipment, including: A bracket (1), an exchange cylinder (2), a flattening cylinder (3), and a transition tube (8); characterized in that: the bracket (1) is composed of two groups of vertical plate-like structures, the bracket (1) is rotatably matched with an exchange cylinder (2) through a bearing, the bracket (1) is rotatably matched with a flattening cylinder (3) through a distance adjustment mechanism (5), the axis lines of the exchange cylinder (2) and the flattening cylinder (3) are arranged in parallel, the shaft rods of the exchange cylinder (2) and the flattening cylinder (3) are both circular tube structures, the circular tube structure is connected to the inside of the exchange cylinder (2) and the flattening cylinder (3), and the shaft rod on one side of the exchange cylinder (2) is connected to a An input pipe (10) and an axis rod of a flattening cylinder (3) are connected to an output pipe (11) on the same side of the input pipe (10) through a rotating joint (7); the side of the exchange cylinder (2) and the flattening cylinder (3) away from the input pipe (10) is connected to the two ends of a transition pipe (8) through a rotating joint (7); a power roller (9) and a feed roller (12) whose axis lines are parallel to the axis line of the exchange cylinder (2) are rotatably matched on the bracket (1); a power mechanism (4) for providing rotational power to the power roller (9) is provided on the bracket (1); and the feed roller (12) is arranged on the side of the bracket (1) away from the power roller (9).

2. The high barrier co-extrusion film production equipment according to claim 1, characterized in that: The support (1) is rotatably fitted with a return roller (13) whose axis is parallel to the axis of the exchange cylinder (2). The return roller (13) is arranged on a side of the exchange cylinder (2) away from the power roller (9).

3. The high barrier co-extrusion film production equipment according to claim 1, characterized in that: The distance adjustment mechanism (5) comprises: a deflection shaft (51), a deflection rod (52), a servo electric cylinder (53), a rod frame (54), and a reinforcement rod (55). The deflection rod (52) has two groups, and the two groups of deflection rods (52) are respectively rotationally matched on the bracket (1) on the same side thereof through the deflection shaft (51). The side of the deflection rod (52) away from the deflection shaft (51) is rotationally matched with the flattening cylinder (3) through the bearing and the shaft rod; the extended end of the servo electric cylinder (53) is rotationally matched with the middle part of the deflection rod (52), and the non-extended end of the servo electric cylinder (53) is rotationally matched with the bracket (1) on the same side thereof.

4. The high barrier co-extrusion film production equipment according to claim 3, characterized in that: A movable seat (61) of a block structure is fixed on the deflection rod (52), a fixed seat (63) is fixedly mounted on the bracket (1) via the mounting seat (62), and a distance sensor (64) is provided between the fixed seat (63) and the movable seat (61).

5. The high barrier co-extrusion film production equipment according to claim 3, characterized in that: The deflection rods (52) are connected and fixed by a rod-shaped reinforcing rod (55), and the axis center line of the reinforcing rod (55) is parallel to the axis center line of the flattening cylinder (3).

6. The high barrier co-extrusion film production equipment according to claim 1, characterized in that: The power mechanism (4) comprises: a reducer (41) and a motor (42); the power roller (9) and the output shaft of the reducer (41) are coaxially fixed; the reducer (41) is fixed on a bracket (1) on the same side thereof; a motor (42) is fixed on the reducer (41); and the output shaft of the motor (42) and the input shaft of the reducer (41) are coaxially fixed.

7. The high barrier co-extrusion film production equipment according to claim 1, characterized in that: The transition pipe (8) is made of a hose.

8. The high barrier co-extrusion film production equipment according to claim 1, characterized in that: The power roller (9) is provided with anti-skid patterns (91) distributed circumferentially.

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