Casting device for plastic bag production

Abstract

The utility model relates to the technical field of plastic film production, and provides a casting device for plastic bag production, which comprises an outer frame and a material box, the material box is fixed at the top of the outer frame, a dust removal component is arranged on the material box, a casting forming component is arranged on the outer frame and the material box, a cooling cleaning component is arranged at the bottom of the outer frame, and an inner frame is fixed inside the material box. The surface of the inner frame is fixedly connected with a pair of hydraulic cylinders, the output ends of the hydraulic cylinders are connected with heating extrusion plates, a pair of convex layers are arranged in the material box, and the extrusion plates and the convex layers are attached in a sealed mode. By means of the technical scheme, the problems that in the related technology, a cast film needs to be cooled on the cooling roller after being extruded, the cooling water cavity is formed in the cooling roller, cooling water flows in from one end of the cooling roller and then flows out from the other end of the cooling roller, scale is formed on the inner wall of the cooling roller in the long-time using process, and the service life of the cast film is prolonged are solved. And the inner wall of the cooling roller is thickened, so that the cooling efficiency is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production, in particular to a casting device for producing plastic bags. Background Art

[0002] Cast film is a non-stretched, non-directional flat extruded film produced by quenching the melt. The plastic film prepared by the casting method first passes through an extruder to plasticize and melt the raw materials. It is extruded through a T-shaped structure forming die and cast in a sheet shape onto the roller surface of a steadily rotating cooling roller. The film is cooled and shaped on the cooling roller, and then the product is rolled up after traction and trimming.

[0003] After the cast film is extruded, it needs to be cooled on a cooling roller. A cooling water chamber is provided inside the cooling roller. The cooling water flows in from one end of the cooling roller and flows out from the other end of the cooling roller. During long-term use, scale will form on the inner wall of the cooling roller, causing the inner wall of the cooling roller to become thicker, affecting the cooling efficiency.

[0004] Therefore, improvements are made to address the above problems. Utility Model Content

[0005] The utility model provides a casting device for producing plastic bags, which solves the problem in the related art that the casting film needs to be cooled on a cooling roller after being extruded, a cooling water chamber is arranged inside the cooling roller, cooling water flows in from one end of the cooling roller and flows out from the other end of the cooling roller, scale is formed on the inner wall of the cooling roller during long-term use, causing the inner wall of the cooling roller to become thicker, thereby affecting the cooling efficiency.

[0006] The technical solution of the utility model is as follows:

[0007] An outer frame and a material box, wherein the material box is fixed on the top of the outer frame;

[0008] A dust removal component, wherein the dust removal component is arranged on the material box;

[0009] A tape casting component, wherein the tape casting component is arranged on the outer frame and the material box;

[0010] A cooling and cleaning component, wherein the cooling and cleaning component is arranged at the bottom of the outer frame;

[0011] The tape casting assembly includes an inner frame, which is fixed inside the material box. A pair of hydraulic cylinders are fixedly connected to the surface of the inner frame, and a heating extrusion plate is connected to the output end of the hydraulic cylinder. A pair of convex layers are arranged in the material box, and the heating extrusion plate is sealed and fitted with the convex layers.

[0012] As a further technical solution, a pair of extrusion rollers are rotatably connected to the inner surface of the outer frame, a drive motor is installed on the outer surface of the outer frame, a transmission shaft is provided on the outer surface of the outer frame, the transmission shaft is connected to the output end of the drive motor, and a transmission gear is provided on one end of the transmission shaft and the extrusion roller.

[0013] As a further technical solution, a circular cavity is opened in the extrusion roller, and a refrigeration roller is rotatably mounted in the circular cavity. One end of the refrigeration roller is fixedly connected to the inner surface of the outer frame, and a plurality of extrusion ports are opened on both sides of the bottom of the material box.

[0014] As a further technical solution, the dust removal assembly includes a hair dryer, which is installed on the outer surface of the material box. An air cavity is opened in the convex layer, and the air cavity is connected to the output end of the hair dryer. A blowing mesh is opened on the upper surface of the convex layer.

[0015] As a further technical solution, the cooling and cleaning assembly includes a pair of base frames, which are respectively fixed at the two ends of the bottom of the outer frame, a pair of guide rollers are rotatably connected between the base frames, a cooling water pump is provided on the side surface of the outer frame, and a pair of rectangular pipes are connected between the base frames.

[0016] As a further technical solution, the surface of the rectangular pipe is provided with scattered holes, and a pair of cleaning plates are rotatably connected between the base frames, and the cleaning plates can be flipped 360°.

[0017] As a further technical solution, the transmission gear on the transmission shaft and the transmission gear at one end of the squeezing roller are both bevel gears.

[0018] As a further technical solution, a detachable filter is installed on the top of the hair dryer.

[0019] As a further technical solution, the rectangular pipe has a certain inclination angle, and the inclination angle of the rectangular pipe is the same as the conveying inclination angle of the plastic film.

[0020] As a further technical solution, a pair of the cleaning plates are offset from each other, and the rotational connection of the cleaning plates is limited by a ratchet transmission.

[0021] The working principle and beneficial effects of the utility model are:

[0022] The utility model is provided with a tape casting molding component. Through the interaction of structures such as a hydraulic cylinder, a heated extrusion plate, an extrusion roller, a driving motor, a transmission shaft, a transmission gear, a refrigeration roller and an extrusion port, the material extruded by the heated extrusion plate under a high temperature state can be extruded and molded by two synchronously rotating extrusion rollers, and cooled by the refrigeration roller at the same time. Through the mutual extrusion of the two extrusion rollers, no abnormal conditions such as bubbles will occur, and a good molding and cooling processing effect is achieved. The cooling method is convenient for cleaning, and there will be no situation where scale cannot be handled. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is the axonometric drawing of the utility model;

[0026] Figure 3 This is an axonometric drawing from another perspective of the utility model;

[0027] Figure 4 It is a cross-sectional view of the utility model;

[0028] Figure 5 This is a cross-sectional view from another perspective of the utility model;

[0029] Figure 6 For the utility model Figure 5 A partial enlarged view of part A;

[0030] In the figure: 1. outer frame; 2. material box; 3. cast molding component; 3-1. inner frame; 3-2. hydraulic cylinder; 3-3. heating extrusion plate; 3-4. convex layer; 3-5. extrusion roller; 3-6. driving motor; 3-7. transmission shaft; 3-8. transmission gear; 3-9. circular cavity; 3-10. refrigeration roller; 3-11. extrusion port; 4. dust removal component; 4-1. blower; 4-2. air cavity; 4-3. air blowing mesh; 5. cooling and cleaning component; 5-1. bottom frame; 5-2. guide roller; 5-3. cooling water pump; 5-4. rectangular pipe; 5-5. dispersion hole; 5-6. cleaning plate; 6. filter. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] like Figure 1 to Figure 6 As shown, this embodiment provides a casting device for producing plastic bags, comprising

[0033] An outer frame 1 and a material box 2, wherein the material box 2 is fixed on the top of the outer frame 1;

[0034] A dust removal component 4, wherein the dust removal component 4 is arranged on the material box 2;

[0035] A tape casting component 3, wherein the tape casting component 3 is arranged on the outer frame 1 and the material box 2;

[0036] A cooling and cleaning component 5, wherein the cooling and cleaning component 5 is arranged at the bottom of the outer frame 1;

[0037] The tape casting assembly 3 includes an inner frame 3-1, which is fixed inside the material box 2. A pair of hydraulic cylinders 3-2 are fixedly connected to the surface of the inner frame 3-1, and a heating extrusion plate 3-3 is connected to the output end of the hydraulic cylinder 3-2. A pair of convex layers 3-4 are arranged in the material box 2, and the heating extrusion plate 3-3 is sealed and fitted with the convex layer 3-4. A pair of extrusion rollers 3-5 are rotatably connected to the inner surface of the outer frame 1, and a driving motor 3-6 is installed on the outer surface of the outer frame 1. A transmission shaft 3-7 is arranged on the outer surface of the outer frame 1, and the transmission shaft 3-7 is connected to the output end of the driving motor 3-6. A transmission gear 3-8 is arranged on one end of the transmission shaft 3-7 and the extrusion roller 3-5. A circular cavity 3-9 is provided in the extrusion roller 3-5, and a refrigeration roller 3-10 is rotatably mounted in the circular cavity 3-9. One end of the refrigeration roller 3-10 is fixedly connected to the inner surface of the outer frame 1. A plurality of extrusion ports 3-11 are provided on both sides of the bottom of the material box 2.

[0038] In this embodiment, in order to achieve the effect of extrusion and molding cooling, a cast molding component 3 is designed, and an inner frame 3-1 and a hydraulic cylinder 3-2 are arranged inside the extrusion box. The output end of the hydraulic cylinder 3-2 is fixed downward on the surface of the inner frame 3-1, and a heating extrusion plate 3-3 is arranged at the output end of the hydraulic cylinder 3-2, which can produce a heating extrusion effect that meets the melting standard. Extrusion ports 3-11 are opened on both sides of the bottom of the extrusion box, and the material is extruded outward at the extrusion ports 3-11. Two extrusion rollers 3-5 are rotatably connected in the base frame 5-1, and a circular cavity 3-9 is opened inside the extrusion roller 3-5. A refrigeration roller 3-10 is arranged inside the circular cavity 3-9. One end of the refrigeration roller 3-10 is fixedly connected to one side of the base frame 5-1 and will not rotate with the extrusion roller 3-5. The extrusion roller 3-5 is continuously cooled to facilitate the molding of the extruded material.

[0039] Furthermore, the dust removal component 4 includes a blower 4-1, which is installed on the outer surface of the material box 2. An air cavity 4-2 is opened in the convex layer 3-4, and the air cavity 4-2 is connected to the output end of the blower 4-1. A blowing mesh 4-3 is opened on the upper surface of the convex layer 3-4.

[0040] In this embodiment, in order to achieve the dust cleaning effect before the raw materials are extruded, a dust cleaning component is designed. An air cavity 4-2 and a blowing mesh 4-3 are opened inside the convex layer 3-4, and a blowing fan is installed outside the extrusion box. The blowing fan can make the blowing mesh 4-3 generate gas to clean and blow out the internal dust.

[0041] Furthermore, the cooling and cleaning assembly 5 includes a pair of base frames 5-1, which are respectively fixed at the two ends of the bottom of the outer frame 1, a pair of guide rollers 5-2 are rotatably connected between the base frames 5-1, a cooling water pump 5-3 is provided on the side surface of the outer frame 1, a pair of rectangular pipes 5-4 are connected between the base frames 5-1, and dispersion holes 5-5 are opened on the surface of the rectangular pipes 5-4, and a pair of cleaning plates 5-6 are rotatably connected between the base frames 5-1, and the cleaning plates 5-6 can be flipped 360°.

[0042] In this embodiment, in order to achieve the effect of cooling the plastic bag and cleaning the surface, a cooling and cleaning component 5 is designed. A base frame 5-1 is provided at both ends of the bottom of the outer frame 1. Two guide rollers 5-2 are rotatably connected between the base frames 5-1. Two rectangular pipes 5-4 are provided between the guide rollers 5-2. Dispersion holes 5-5 are opened on the surface of the rectangular pipes 5-4. A cooling water pump 5-3 is fixed on the outer frame 1. The cooling water pump 5-3 is connected to the rectangular pipes 5-4. Water can be sucked by the cooling water pump 5-3 and scattered on the surface of the plastic film through the dispersion holes 5-5. The rotating guide rollers 5-2 are used to squeeze and push the water on the surface of the plastic film. Two rotatable cleaning plates 5-6 are also provided to scrape the water on the surface of the plastic film.

[0043] Furthermore, the transmission gear 3 - 8 on the transmission shaft 3 - 7 and the transmission gear 3 - 8 at one end of the squeezing roller 3 - 5 are both bevel gears.

[0044] In this embodiment, the transmission angle between the transmission gears 3 - 8 reaches 90° through the structure of the bevel gear, so that the two squeezing rollers 3 - 5 can rotate in opposite directions.

[0045] Furthermore, a detachable filter 6 is installed on the top of the hair dryer 4-1.

[0046] In this embodiment, by installing a filter 6 at the air inlet of the hair dryer 4-1, the incoming dust can be filtered out, thereby improving the dust removal effect.

[0047] Furthermore, the rectangular pipe 5 - 4 has a certain inclination angle, and the inclination angle of the rectangular pipe 5 - 4 is the same as the conveying inclination angle of the plastic film.

[0048] In this embodiment, the water on the surface of the plastic film can be fully squeezed out by adjusting the tilt angle, coordinating with the conveying direction of the plastic bag, and coordinating with the guide roller 5 - 2 .

[0049] Furthermore, the pair of cleaning plates 5 - 6 are offset from each other, and the rotation connection of the cleaning plates 5 - 6 is limited by ratchet transmission.

[0050] In this embodiment, the cleaning plates 5-6 can be respectively attached to the surface and bottom of the plastic film through the mutually staggered connection positions, which can completely clean the water stains on the surface, and the different surfaces can be flipped for easy cleaning through the rotating connection effect.

[0051] When processing is required, the material is put into the material box 2, the heating extrusion plate 3-3 is started to start heating, the hydraulic cylinder 3-2 is started intermittently, and the output end of the hydraulic cylinder 3-2 extends downward to push the heating extrusion plate 3-3, so that the material is extruded outward at the extrusion port 3-11, and the driving motor 3-6 is started at the same time, and the two extrusion rollers 3-5 are driven to start rotating through the transmission gear 3-8 to extrude the extruded material. During the extrusion molding process, the temperature is lowered by the refrigeration roller 3-10, and then the guide roller 5-2 is bypassed, and the cooling water pump 5-3 is started to spray water outward from the dispersion holes 5-5 of the rectangular pipe 5-4, and scatter on the surface of the plastic film for further cooling. During the movement, the water stains on the surface can be scraped dry by the guide roller 5-2 and the cleaning plate 5-6. During the processing, the blower 4-1 is kept running, and the gas is blown into the material through the blowing mesh 4-3 to blow the internal dust out.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A casting device for producing plastic bags, characterized in that: include An outer frame (1) and a material box (2), wherein the material box (2) is fixed on the top of the outer frame (1); A dust removal component (4), wherein the dust removal component (4) is arranged on the material box (2); A tape-casting component (3), wherein the tape-casting component (3) is arranged on the outer frame (1) and the material box (2); A cooling and cleaning component (5), wherein the cooling and cleaning component (5) is arranged at the bottom of the outer frame (1); The tape-casting component (3) comprises an inner frame (3-1), wherein the inner frame (3-1) is fixed inside the material box (2), a pair of hydraulic cylinders (3-2) are fixedly connected to the surface of the inner frame (3-1), the output ends of the hydraulic cylinders (3-2) are connected to a heating extrusion plate (3-3), a pair of convex layers (3-4) are arranged inside the material box (2), and the heating extrusion plate (3-3) and the convex layers (3-4) are sealed and fitted together.

2. A casting device for producing plastic bags according to claim 1, characterized in that: A pair of squeezing rollers (3-5) are rotatably connected to the inner surface of the outer frame (1), a driving motor (3-6) is installed on the outer surface of the outer frame (1), a transmission shaft (3-7) is arranged on the outer surface of the outer frame (1), the transmission shaft (3-7) is connected to the output end of the driving motor (3-6), and a transmission gear (3-8) is arranged on one end of the transmission shaft (3-7) and the squeezing roller (3-5).

3. A casting device for producing plastic bags according to claim 2, characterized in that: A circular cavity (3-9) is provided in the extrusion roller (3-5), a refrigeration roller (3-10) is rotatably mounted in the circular cavity (3-9), one end of the refrigeration roller (3-10) is fixedly connected to the inner surface of the outer frame (1), and a plurality of extrusion ports (3-11) are provided on both sides of the bottom of the material box (2).

4. A casting device for producing plastic bags according to claim 1, characterized in that: The dust removal component (4) comprises a blower (4-1), the blower (4-1) is installed on the outer surface of the material box (2), an air cavity (4-2) is provided in the convex layer (3-4), the air cavity (4-2) is connected to the output end of the blower (4-1), and an air blowing mesh (4-3) is provided on the upper surface of the convex layer (3-4).

5. A casting device for producing plastic bags according to claim 1, characterized in that: The cooling and cleaning assembly (5) comprises a pair of base frames (5-1), the base frames (5-1) being respectively fixed at two ends of the bottom of the outer frame (1), a pair of guide rollers (5-2) being rotatably connected between the base frames (5-1), a cooling water pump (5-3) being arranged on the side surface of the outer frame (1), and a pair of rectangular pipes (5-4) being connected between the base frames (5-1).

6. A casting device for producing plastic bags according to claim 5, characterized in that: The surface of the rectangular pipe (5-4) is provided with dispersion holes (5-5), and a pair of cleaning plates (5-6) are rotatably connected between the base frames (5-1), and the cleaning plates (5-6) can be turned 360 degrees.

7. A casting device for producing plastic bags according to claim 2, characterized in that: The transmission gear (3-8) on the transmission shaft (3-7) and the transmission gear (3-8) at one end of the squeezing roller (3-5) are both bevel gears.

8. A casting device for producing plastic bags according to claim 4, characterized in that: A detachable filter screen (6) is installed on the top of the hair dryer (4-1).

9. A casting device for producing plastic bags according to claim 5, characterized in that: The rectangular pipe (5-4) has a certain inclination angle, and the inclination angle of the rectangular pipe (5-4) is the same as the conveying inclination angle of the plastic film.

10. A casting device for producing plastic bags according to claim 6, characterized in that: The pair of cleaning plates (5-6) are mutually offset, and the rotation connection of the cleaning plates (5-6) is limited by ratchet transmission.

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