Film blowing device for polyethylene film production

Abstract

The utility model relates to the field of polyethylene film production equipment, and discloses a film blowing device for polyethylene film production, which comprises a machine body, the left end of the machine body is fixedly connected with a gearbox, the right side of the machine body is provided with a die head, and the upper surface of the machine body is fixedly connected with a feeding hopper. A buffer hopper is fixedly connected into the feeding hopper, an adsorption plate is arranged in the feeding hopper, an electromagnet is fixedly connected to the bottom face of the adsorption plate, a vibration unit is arranged on the left side of the adsorption plate, a dredging unit is arranged at the top end of the vibration unit, and a buffer plate is fixedly connected to the left end of the upper surface of the adsorption plate. According to the feeding hopper, through the cooperation of the buffer hopper, the adsorption plate and the electromagnet, metal impurities in materials entering the feeding hopper can be adsorbed and removed, and the metal impurities are prevented from affecting the forming quality of a polyethylene film.

Description

Technical Field

[0001] The utility model relates to the field of polyethylene film production equipment, in particular to a film blowing device for polyethylene film production. Background Art

[0002] Polyethylene film refers to a film produced from PE particles. PE film has the characteristics of moisture resistance and low moisture permeability. In the prior art, when producing PE film, a film blowing machine is used to first melt the plastic particles fed into the machine body, and then the molten material is further heated to the most suitable temperature required for film blowing. The molten material evenly overflows from the annular interlayer, and then the molten material is blown into a plastic film using the air evenly blown out from the inside of the annular interlayer.

[0003] After searching, Chinese patent announcement number: CN218576976U discloses a film blowing machine for CPP film production, including a fan installed on the surface of a dust removal box to remove the CPP film material blocks added to the lower hopper, and filter and collect them through a dust collection bag and a filter screen plug plate. The servo motor controls the S-shaped stirring rod to effectively drive the internal material to cooperate with dust removal, thereby further improving the quality of CPP film production.

[0004] In the actual process of the above-mentioned film blowing device, the PE film particle raw materials used will not only be mixed with dust impurities but also some metal impurities. Since some metal impurities have a large density, the metal impurities cannot be completely removed by just blowing with a fan, which will cause the metal impurities to enter the body, which will not only cause wear of the conveying auger, but also affect the molding quality of the polyethylene film. Therefore, a film blowing device for polyethylene film production is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a film blowing device for polyethylene film production, aiming to improve the problem in the prior art that the film blowing device cannot completely remove metal impurities during the raw material impurity removal process, which affects the service life of the device and the film forming effect.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a film blowing device for producing polyethylene film, comprising a machine body, a gearbox is fixedly connected to the left end of the machine body, a die head is arranged on the right side of the machine body, a feeding hopper is fixedly connected to the upper surface of the machine body, a buffer hopper is fixedly connected to the inside of the feeding hopper, an adsorption plate is arranged inside the feeding hopper, an electromagnet is fixedly connected to the bottom surface of the adsorption plate, a vibration unit is arranged on the left side of the adsorption plate, a dredging unit is arranged on the top of the vibration unit, a buffer plate is fixedly connected to the left end of the upper surface of the adsorption plate, and a buffer rod is fixedly connected to the right inner wall surface of the buffer hopper.

[0007] As a further description of the above technical solution:

[0008] A discharge port is provided on the right surface of the feeding hopper, an L-shaped through groove is provided on the upper surface of the discharge port, an L-shaped sealing frame is provided inside the L-shaped through groove, a fixing plate is provided inside the discharge port, a limiting groove is provided on the upper surface of the fixing plate, and a collecting box is fixedly connected to the left surface of the fixing plate.

[0009] As a further description of the above technical solution:

[0010] The vibration unit includes a slide groove, which is opened on the left inner wall surface of the feeding hopper, an elastic member is fixedly connected to the inner bottom end of the slide groove, a sliding block is fixedly connected to the top end of the elastic member, and a direct vibration motor is fixedly connected to the bottom end of the electromagnet.

[0011] As a further description of the above technical solution:

[0012] The slider is slidably connected to the inside of the slide groove, and the right side surface of the slider is fixedly connected to the left side surface of the adsorption plate.

[0013] As a further description of the above technical solution:

[0014] The dredging unit comprises a connecting rod, the connecting rod is fixedly connected to the upper end of the sliding block, the upper end of the connecting rod is fixedly connected to a cross bar, and the upper end of the cross bar is fixedly connected to a dredging plate.

[0015] As a further description of the above technical solution:

[0016] The dredging plate is located inside the buffer bucket, and the bottom end of the buffer bucket is located at the left upper end of the adsorption plate.

[0017] As a further description of the above technical solution:

[0018] The fixing plate is inserted into the inside of the discharge port, and the bottom end of the L-shaped sealing frame is inserted into the inside of the limiting groove.

[0019] As a further description of the above technical solution:

[0020] The collection box is located at the lower right end of the adsorption plate.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the cooperation of the buffer hopper, adsorption plate and electromagnet, the metal impurities in the material entering the feeding hopper can be adsorbed and removed to prevent the metal impurities from affecting the molding quality of the polyethylene film. The vibration unit and dredging sheet can drive the adsorption plate to vibrate in the up and down directions to prevent a large amount of impurities from accumulating and affecting the subsequent material from sliding, and the bottom surface of the buffer hopper can be dredged to prevent the accumulation of materials from clogging the buffer hopper and affecting the discharge of materials.

[0023] 2. In the utility model, the discharge port, the fixed plate and the collection box are provided, so that the metal impurities sliding down from the adsorption plate can be collected and processed after the use of the feeding hopper is completed, and the fixed plate can be quickly limited by the cooperation of the provided L-shaped through groove, the L-shaped sealing frame and the fixed plate, so that the collection box can be quickly installed and disassembled, and the operation is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the whole of a film blowing device for producing polyethylene film proposed by the utility model;

[0025] Figure 2 A schematic diagram of the interior of a hopper of a film blowing device for producing polyethylene film proposed in the utility model;

[0026] Figure 3 A schematic diagram of a buffer hopper, an adsorption plate, an electromagnet, a vibration unit and a dredging unit of a film blowing device for producing polyethylene film proposed by the utility model;

[0027] Figure 4 The utility model discloses a schematic diagram of an L-shaped sealing frame, a fixing plate and a collecting box of a film blowing device for producing polyethylene film.

[0028] Legend:

[0029] 1. Machine body; 2. Gearbox; 3. Die head; 4. Feeding hopper; 5. Buffer hopper; 6. Adsorption plate; 7. Electromagnet; 81. Slide; 82. Elastic part; 83. Sliding block; 84. Direct vibration motor; 91. Connecting rod; 92. Cross bar; 93. Clearing plate; 10. Buffer plate; 11. Buffer rod; 12. Discharge port; 13. L-shaped through groove; 14. L-shaped sealing frame; 15. Fixing plate; 16. Limiting groove; 17. Collection box. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in 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 in 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.

[0031] Reference Figure 1 The utility model provides an embodiment: a film blowing device for producing polyethylene film, comprising a body 1, a gearbox 2 is fixedly connected to the left end of the body 1, a feeding auger is arranged inside the body 1, and when the gearbox 2 is started, the auger can be driven to rotate to transport the raw materials entering the body 1 to the die head 3 for film blowing molding, a die head 3 is arranged on the right side of the body 1, and a feeding hopper 4 is fixedly connected to the upper surface of the body 1, and the raw materials can enter the body 1 through the feeding hopper 4.

[0032] Reference Figure 2-Figure 3 A buffer hopper 5 is fixedly connected to the inside of the feeding hopper 4, and an adsorption plate 6 is arranged inside the feeding hopper 4. The adsorption plate 6 is made of iron material. An electromagnet 7 is fixedly connected to the bottom surface of the adsorption plate 6. The electromagnet 7 can generate magnetic force when energized. At this time, the adsorption plate 6 also has magnetic force, which can adsorb and remove metal impurities in the raw materials moving downward, so as to prevent metal impurities from entering the machine body 1 and affecting the molding quality of the polyethylene film. The adsorption plate 6 can be fixedly connected with the electromagnet 7 and the slider 83 by bolts, so that when the surface of the adsorption plate 6 is sunken due to impact after being used for a period of time and affecting the feeding, the adsorption plate 6 can be removed and replaced.

[0033] A vibration unit is provided on the left side of the adsorption plate 6. The vibration unit includes a chute 81. The chute 81 is opened on the left inner wall surface of the hopper 4. An elastic member 82 is fixedly connected to the bottom end of the chute 81. A slider 83 is fixedly connected to the top of the elastic member 82. The slider 83 is slidably connected to the inside of the chute 81. The slider 83 can perform linear motion in the up and down directions inside the chute 81. When the slider 83 moves downward, the elastic member 82 can be squeezed to compress the elastic member 82 to generate elastic potential energy. The right side surface of the slider 83 is fixedly connected to the left side surface of the adsorption plate 6. When the adsorption plate 6 moves, it can drive The slider 83 moves synchronously, and the movement of the adsorption plate 6 can be guided and limited by the cooperation of the slider 83 and the slide groove 81, so that the adsorption plate 6 can only perform linear motion in the up and down directions. The bottom end of the electromagnet 7 is fixedly connected to a direct vibration motor 84. When the direct vibration motor 84 is started, the adsorption plate 6 can be driven by the electromagnet 7 to vibrate continuously in the up and down directions. When the raw material reaches the top of the adsorption plate 6 and is magnetically adsorbed to remove impurities, a large amount of adsorbed metal impurities will block the subsequent sliding raw materials. At this time, the adsorption plate 6 vibrates, which can make the blocked raw material jump and continue to fall, avoiding affecting the feeding.

[0034] A dredging unit is provided at the top of the vibration unit, and the dredging unit includes a connecting rod 91, which is fixedly connected to the upper end of the slider 83, and the upper end of the connecting rod 91 is fixedly connected to a cross bar 92, and the upper end of the cross bar 92 is fixedly connected to a dredging plate 93. When the slider 83 follows the adsorption plate 6 to vibrate in the up and down directions, the dredging plate 93 can be driven to vibrate synchronously through the connecting rod 91 and the cross bar 92. The dredging plate 93 is located inside the buffer bucket 5. When the dredging plate 93 vibrates in the up and down directions, the raw materials blocked at the bottom of the buffer bucket 5 can be moved, thereby achieving the effect of dredging the bottom of the buffer bucket 5, and avoiding the blockage of raw materials due to the small bottom of the buffer bucket 5 affecting the feeding.

[0035] The bottom end of the buffer bucket 5 is located at the upper left end of the adsorption plate 6. The left end of the upper surface of the adsorption plate 6 is fixedly connected to a buffer plate 10. The buffer plate 10 and the buffer rod 11 are both made of rubber material. When the material falls above the adsorption plate 6 through the buffer bucket 5, it will hit the buffer plate 10 for buffering treatment, reducing the kinetic energy of the material, so that the material slowly rolls on the adsorption plate 6, so that the adsorption plate 6 can more comprehensively adsorb and remove impurities from the metal impurities. The right inner wall surface of the buffer bucket 5 is fixedly connected to a buffer rod 11. When the material slides downward along the right inner wall surface of the buffer bucket 5, the buffer rod 11 can reduce the sliding speed of the material, further reducing the situation where the material flies out directly without being removed when it hits the adsorption plate 6 due to excessive speed.

[0036] Reference Figure 2 and Figure 4A discharge port 12 is provided on the right surface of the hopper 4, an L-shaped through groove 13 is provided on the upper surface of the discharge port 12, an L-shaped sealing frame 14 is provided inside the L-shaped through groove 13, and the bottom of the L-shaped sealing frame 14 can seal the inside of the opened discharge port 12. The staff can directly lift the L-shaped sealing frame 14 upward from the right end of the hopper 4 to open the discharge port 12. A fixing plate 15 is provided inside the discharge port 12, and the fixing plate 15 is plugged into the inside of the discharge port 12. The fixing plate 15 can seal the inside of the discharge port 12 to prevent impurities from flying out directly from the discharge port 12 when collecting metal impurities. A limiting groove 16 is provided on the upper surface of the fixing plate 15, and an inner groove is provided on the right surface of the fixing plate 15 to facilitate the staff to operate and move the fixing plate 15. 4 is plugged into the interior of the limiting groove 16, and the left surface of the fixing plate 15 is fixedly connected with a collecting box 17, which is located at the lower right end of the adsorption plate 6. After the feeding hopper 4 stops being used, the L-shaped sealing frame 14 can be lifted upward to open the discharge port 12, and then the collecting box 17 and the fixing plate 15 are inserted through the discharge port 12. When the fixing plate 15 completely enters the discharge port 12, the L-shaped sealing frame 14 can be loosened, so that the L-shaped sealing frame 14 falls into the limiting groove 16 to limit the fixing plate 15, and then the power supply to the electromagnet 7 is stopped, so that the metal impurities slide downward along the inclined surface of the adsorption plate 6, and the impurities that slide can enter the collecting box 17 for collection. After the collection is completed, the L-shaped sealing frame 14 is lifted to connect the fixing plate 15 to the collecting box 17 for removal and cleaning, which is easy to operate.

[0037] Working principle: When the material enters the feeding hopper 4, the material will fall to the left side of the upper surface of the adsorption plate 6 through the buffer hopper 5. During this process, the buffer plate 10 and the buffer rod 11 can buffer and slow down the material, reduce the kinetic energy of the material, and avoid the material hitting the adsorption plate 6 at high speed, resulting in material discharge without impurities removal. At the same time, the electromagnet 7 can be energized so that the adsorption plate 6 can adsorb and remove metal impurities in the material. During the impurity removal process, the direct vibration motor 84 can be started to drive the adsorption plate 6 to vibrate continuously in the up and down directions to avoid the adsorption plate 6 adsorbing a large amount of impurities and hindering the subsequent material from passing through and discharging. At the same time, the dredging plate 93 can be driven to move up and down inside the bottom end of the buffer hopper 5, and the bottom end of the buffer hopper 5 can be dredged to avoid material blockage affecting material discharge.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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 film blowing device for producing polyethylene film, comprising a body (1), characterized in that: The left end of the machine body (1) is fixedly connected to a gearbox (2), the right side of the machine body (1) is provided with a die head (3), the upper surface of the machine body (1) is fixedly connected to a feeding hopper (4), the interior of the feeding hopper (4) is fixedly connected to a buffer hopper (5), the interior of the feeding hopper (4) is provided with an adsorption plate (6), the bottom surface of the adsorption plate (6) is fixedly connected to an electromagnet (7), the left side of the adsorption plate (6) is provided with a vibration unit, the top of the vibration unit is provided with a dredging unit, the left end of the upper surface of the adsorption plate (6) is fixedly connected to a buffer plate (10), and the right inner wall surface of the buffer hopper (5) is fixedly connected to a buffer rod (11).

2. The film blowing device for producing polyethylene film according to claim 1, characterized in that: The right side surface of the feeding hopper (4) is provided with a discharge port (12), the upper surface of the discharge port (12) is provided with an L-shaped through groove (13), an L-shaped sealing frame (14) is arranged inside the L-shaped through groove (13), a fixing plate (15) is arranged inside the discharge port (12), a limiting groove (16) is arranged on the upper surface of the fixing plate (15), and a collecting box (17) is fixedly connected to the left side surface of the fixing plate (15).

3. The film blowing device for producing polyethylene film according to claim 1, characterized in that: The vibration unit comprises a slide groove (81), the slide groove (81) is opened on the left inner wall surface of the feeding hopper (4), the inner bottom end of the slide groove (81) is fixedly connected to an elastic member (82), the top end of the elastic member (82) is fixedly connected to a sliding block (83), and the bottom end of the electromagnet (7) is fixedly connected to a direct vibration motor (84).

4. The film blowing device for producing polyethylene film according to claim 3, characterized in that: The slider (83) is slidably connected to the inside of the slide groove (81), and the right side surface of the slider (83) is fixedly connected to the left side surface of the adsorption plate (6).

5. The film blowing device for producing polyethylene film according to claim 1, characterized in that: The dredging unit comprises a connecting rod (91), wherein the connecting rod (91) is fixedly connected to the upper end of the sliding block (83), the upper end of the connecting rod (91) is fixedly connected to a cross rod (92), and the upper end of the cross rod (92) is fixedly connected to a dredging plate (93).

6. The film blowing device for producing polyethylene film according to claim 5, characterized in that: The dredging plate (93) is located inside the buffer bucket (5), and the bottom end of the buffer bucket (5) is located on the upper left end of the adsorption plate (6).

7. The film blowing device for producing polyethylene film according to claim 2, characterized in that: The fixing plate (15) is inserted into the interior of the discharge port (12), and the bottom end of the L-shaped sealing frame (14) is inserted into the interior of the limiting groove (16).

8. The film blowing device for producing polyethylene film according to claim 2, characterized in that: The collection box (17) is located at the lower right end of the adsorption plate (6).

Images