A film hot melt extruder and method for producing packaging bag film

Abstract

The present invention discloses a film hot melt extruder and method based on the production of packaging bag film, and the present invention relates to the technical field of film hot melt extrusion. The film hot melt extruder and method based on the production of packaging bag film include an extruder body, a filter plate detachably installed in the extruder body for filtering impurities, an intermediate block is installed at the filter plate, and a decontamination component for removing pollutants and an enhancement component for enhancing the removal effect are arranged in the intermediate block, and the decontamination component includes: a removal block, which is slidably installed in the intermediate block for removing pollutants on the back of the filter plate, and a rotating shaft is fixed on the side wall of the removal block, and a fixed plate is passed through the rotating shaft; by setting the removal block, during the extrusion production process, bubbles in the material are helped to be discharged, the product quality is improved, and during the cleaning process, pollutants on the back of the filter plate and the edge dead corners are removed to prevent pollutants from contaminating the next batch of materials.

Description

Technical Field

[0001] The invention relates to the technical field of film hot-melt extrusion, in particular to a film hot-melt extruder and method based on the production of packaging bag films. Background Art

[0002] At present, in the process of hot-melt extrusion of thin films using a screw extruder, due to the different colors of different packaging bags, it is necessary to replace materials of different colors to produce different films. However, when replacing different materials, it is difficult to thoroughly clean the inside of the screw extruder, which is easy to cause residues to contaminate new products. The existing pollutant removal method usually adopts the method of mixing cleaning materials with abrasives. However, in order to ensure product quality, a filter is usually set in the extruder to remove impurities, but the filter is prone to clogging. When this method is used to remove pollutants, the side of the filter facing the screw and the channel can be well cleaned with the help of pressure and abrasives. However, after these cleaning materials flow through the filter holes to the side of the filter facing away from the screw, the pressure will weaken, resulting in pollutants on the back of the filter that are easy to remain and contaminate the next batch of products produced;

[0003] For example, the plastic twin-screw extruder cleaning device disclosed in the announcement number CN218593632U has the problem that the pollutants on the back of the filter cannot be removed by cleaning with cleaning materials. There is also an extruder and a working method thereof disclosed in the announcement number CN117644631B that use ultrasonic cleaning. This application uses cavitation to make the pollutants attached to the screw extruder fall into the solution. This method requires the bubbles in the liquid to expand first and then burst. The buoyancy of the bubbles will increase when they expand and float upward. It cannot be guaranteed that the bubbles will be next to the pollutants when they burst. Therefore, a film hot melt extruder and method based on the production of packaging bag films are proposed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a film hot melt extruder and method based on the production of packaging bag film, which solves the problem that it is difficult to fully remove pollutants attached to the side of the filter screen facing away from the screw by the cooperation of pressure and abrasive, resulting in pollutants easily remaining on the back of the filter screen and contaminating the next batch of products produced.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A film hot melt extruder based on the production of packaging bag film, comprising an extruder body, a filter plate detachably installed in the extruder body for filtering impurities, an intermediate block installed at the filter plate, a decontamination component for removing pollutants and an enhancement component for enhancing the removal effect are arranged in the intermediate block, and the decontamination component includes:

[0006] A removal block is slidably mounted in the middle block and is used to remove pollutants on the back of the filter plate. A rotating shaft is fixed on the side wall of the removal block, and a fixing plate is passed through the rotating shaft.

[0007] An electric push rod, one end of which is fixedly mounted on the top of the middle block for driving the removal block to move, and the other end of the electric push rod is fixed with a support plate, the bottom of the support plate is fixed to the top of the fixed plate;

[0008] A micro motor is installed on the top of the middle block through a motor seat to drive the removal block to rotate;

[0009] The enhancement assembly includes a boost plate slidably mounted on a removal block.

[0010] Preferably, an output shaft is connected to the output end of the micromotor, a connecting rod is fixed to one end of the output shaft, one end of the connecting rod is movably connected to a movable shaft one, one end of the movable shaft one is movably connected to an upper sliding rod, a magnet is fixed to the bottom of the upper sliding rod, a lower sliding rod is provided on the outer sliding sleeve of the upper sliding rod, and the magnet and the lower sliding rod are magnetically connected.

[0011] Preferably, a movable shaft 2 is movably connected to the side wall of the lower sliding rod, and the other end of the movable shaft 2 is movably connected to a support rod, and the side wall of the support rod is fixed to one end of the rotating shaft.

[0012] Preferably, a mounting block is fixed on the side wall of the middle block, a water collecting box is inserted in the mounting block through a latch, a fixing block is fixed on the inner wall of the middle block, a supporting shaft is hinged on the side wall of the fixing block through a torsion spring, a mounting rod is movably mounted on one end of the supporting shaft, one end of the mounting rod is connected to the side wall of the mounting column through the mounting shaft, a baffle is fixed to the bottom of the mounting column, the baffle is slidably abutted against the middle block and the removal block, and a sealing arrangement is provided at the connection.

[0013] Preferably, a sliding column is slidably provided in the removal block, an extrusion block is fixed to one end of the sliding column, a positioning plate is fixed to the sliding column, a power slider is fixed to the other end of the sliding column, a driven slider is abutted on the power slider, and one end of the driven slider is fixed to the boosting plate.

[0014] Preferably, a movable slider is fixed on the side wall of the boost plate, a fixed slider is abutted on the movable slider, one end of the fixed slider is fixed on the removal block, and a steel sheet is fixed on one end of the boost plate.

[0015] Preferably, a spring is fixed on the side wall of the positioning plate, the other end of the spring is fixed in the removal block, the spring is sleeved on the sliding column, a moving electromagnet is fixed on the side wall of the positioning plate, a fixed electromagnet is connected to the side wall of the moving electromagnet, and one end of the fixed electromagnet is fixed in the removal block.

[0016] Preferably, a connecting plate is fixed on the side wall of the positioning plate, an inner sliding rod is fixed on the side wall of the connecting plate, one end of the inner sliding rod is slidably inserted into the removal block, one end of the inner sliding rod is fixed with a reinforcing plate, and a steel bar is fixed on the reinforcing plate.

[0017] The present invention also provides a method for removing pollutants from a film hot melt extruder for producing packaging bag films, comprising the following steps:

[0018] S1. After the previous remaining material in the extruder body is extruded, a cleaning material mixed with abrasive is added and the extruder body is started;

[0019] S2. Clean the extruder body by starting the decontamination component and using the cleaning material;

[0020] S3, strengthening the cleaning effect by combining the strengthening component with the decontamination component;

[0021] S4, discharging the cleaning material containing pollutants through the die outlet of the extruder body;

[0022] S5. After resetting the decontamination component, the extrusion production operation of the next film material can be started.

[0023] Preferably, during cleaning, the extrusion speed of the extruder body is between 10-13 r / min.

[0024] The present invention provides a film hot melt extruder and method for producing packaging bag films. Compared with the prior art, it has the following beneficial effects:

[0025] (1) The film hot melt extruder and method for producing packaging bag film are provided with an extruder body, a filter plate, an intermediate block, a mounting block, a water receiving box, a micro motor, an output shaft, a connecting rod, a movable shaft 1, an upper sliding rod, a magnet, a lower sliding rod, a movable shaft 2, a support rod, a rotating shaft, a removal block, a fixed plate, a support plate, an electric push rod, a baffle, a mounting column, a mounting rod, a support shaft, and a fixed block. When it is necessary to replace materials of different colors to produce packaging bag films of different colors, a cleaning agent mixed with an abrasive is added after the material of the previous color is extruded. The cleaning agent mixed with an abrasive is used to clean important parts such as the screw, the barrel, the filter plate, and the mold in the extruder body. The side of the filter plate facing the screw and the filter holes on the filter plate are in full contact and friction with the cleaning agent mixed with the abrasive. The contaminants attached to the side of the filter plate facing away from the screw are removed by the removal block to prevent the contaminants from contaminating the next batch of materials.

[0026] (2) The film hot melt extruder and method for producing packaging bag film are provided with an extrusion block, a sliding column, a spring, a positioning plate, a pressure-increasing plate, a steel sheet, a sliding shaft, a driven slider, a power slider, a fixed slider, a moving slider, a fixed electromagnet, and a moving electromagnet. When the removal block extends from the middle block and rotates around the rotating shaft to perform a decontamination operation, the pressure-increasing plate extends from the removal block and approaches the filter plate, and at the same time, it can approach the edge dead angle where the barrel and the filter plate contact, thereby further reducing the gap between the removal block and the filter plate, increasing the pressure of the removal block on the abrasive, and making the removal block During the rotation, the removal block and the abrasive can cooperate with each other to fully remove the pollutants on the back of the filter plate, and drive the steel sheet to move to the edge dead corner through the booster plate. When the steel sheet abuts against the inner wall of the barrel and the filter plate, it will deform at a certain angle and open or close. In this process, the pollutants in the edge dead corner are removed by the steel sheet. At the same time, the back and forth deflection of the removal block can squeeze the molten material in the barrel, help to discharge the bubbles in the material, improve product quality, and avoid the former material remaining on the removal block during the extrusion production process and contaminating the latter material.

[0027] (3) The film hot melt extruder and method based on the production of packaging bag film are provided with a connecting plate, an inner sliding rod, a reinforcing plate, and a steel bar. As the removal block rotates, the reinforcing plate and the steel bar can extend to clean the back of the filter plate. When the steel bar encounters a filter hole during the rotation, it can be stuck into a small part of the filter hole. At the same time, the steel bar has a certain elasticity, so that after the steel bar is stuck into the filter hole, it can bounce in the filter hole as the removal block rotates, thereby removing pollutants attached to the edge between the filter hole and the back of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 Another perspective schematic diagram of the overall structure of the present invention;

[0030] Figure 3 It is a front cross-sectional view of the filter plate of the present invention;

[0031] Figure 4 For the present invention Figure 3 The enlarged view of point A in the middle;

[0032] Figure 5 is a side sectional view of the intermediate block of the present invention;

[0033] Figure 6 is a schematic diagram of a decontamination assembly of the present invention;

[0034] Figure 7 For the present invention Figure 6 The enlarged view of point B in the middle;

[0035] Figure 8 It is a schematic diagram of the combined state of the upper sliding rod of the present invention;

[0036] Fig. 9 It is a schematic diagram of the disassembled state of the upper sliding rod of the present invention;

[0037] Fig.10 The external structural diagram of the block is removed for the present invention;

[0038] Fig.11 A cross-sectional view with the block removed for the present invention;

[0039] Fig.12 It is a partial structural diagram of the reinforcement assembly of the present invention;

[0040] Fig.13 It is a schematic diagram of the exploded position of the booster plate of the present invention;

[0041] Fig.14 It is a structural diagram of the reinforcing plate of the present invention.

[0042] In the figure: 1, extruder body; 101, filter plate; 2, middle block; 21, mounting block; 22, water receiving box; 3, micro motor; 31, output shaft; 32, connecting rod; 33, movable shaft 1; 34, upper sliding rod; 35, magnet; 36, lower sliding rod; 37, movable shaft 2; 38, support rod; 39, rotating shaft; 310, removal block; 311, fixing plate; 312, support plate; 313, electric push rod; 4, baffle; 4 1. Mounting column; 42. Mounting rod; 43. Support shaft; 44. Fixed block; 5. Extrusion block; 51. Sliding column; 52. Spring; 53. Positioning plate; 54. Boosting plate; 55. Steel sheet; 56. Sliding shaft; 57. Driven slider; 58. Power slider; 59. Fixed slider; 510. Moving slider; 511. Fixed electromagnet; 512. Moving electromagnet; 6. Connecting plate; 61. Inner sliding rod; 62. Reinforcement plate; 63. Steel bar. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figures 1 to 14 , the present invention provides the following technical solutions:

[0045] Embodiment 1: A film hot melt extruder based on the production of packaging bag film, comprising an extruder body 1, a filter plate 101 detachably mounted in the extruder body 1 for filtering impurities, an intermediate block 2 detachably mounted at the filter plate 101, a decontamination component for removing pollutants is arranged in the intermediate block 2, and the decontamination component comprises:

[0046] The side wall of the removal block 310 is slidably mounted in the middle block 2 for removing pollutants on the back of the filter plate 101. A rotating shaft 39 is fixedly mounted on the side wall of the removal block 310, and a fixed plate 311 is movably mounted on the rotating shaft 39 through a bearing.

[0047] One end of the electric push rod 313 is fixedly installed on the top of the middle block 2 to drive the removal block 310 to move, and the other end of the electric push rod 313 is fixedly installed with a support plate 312, and the bottom of the support plate 312 is fixedly connected to the top of the fixed plate 311;

[0048] The outer wall of the micro motor 3 is fixedly installed on the top of the middle block 2 through a motor seat to drive the removal block 310 to rotate. An output shaft 31 is fixedly connected to the output end of the micro motor 3 through a coupling. One end of the output shaft 31 is fixedly connected to a connecting rod 32. One end of the connecting rod 32 is movably connected to a movable shaft 1 33 through a bearing 2. One end of the movable shaft 1 33 is movably connected to an upper sliding rod 34 through a bearing 3. A magnet 35 is fixedly installed on the bottom of the upper sliding rod 34. A lower sliding rod 36 is slidably sleeved outside the upper sliding rod 34. The magnet 35 and the lower sliding rod 36 are magnetically connected. A movable shaft 2 37 is movably connected to the side wall of the lower sliding rod 36 through a shaft tooth 4. The other end of the movable shaft 2 37 is movably connected to a support rod 38 through a bearing 5. The side wall of the support rod 38 is fixedly installed on one end of a rotating shaft 39.

[0049] A mounting block 21 is fixedly installed on the side wall of the middle block 2, and a water receiving box 22 is plugged into the mounting block 21 through a pin. A fixed block 44 is fixedly installed on the inner wall of the middle block 2. A support shaft 43 is hinged on the side wall of the fixed block 44 through a torsion spring. A mounting rod 42 is movably installed on one end of the support shaft 43 through bearing 6. One end of the mounting rod 42 is movably connected to the side wall of the mounting column 41 through the mounting shaft. The bottom of the mounting column 41 is fixedly installed on the top of the baffle 4. The baffle 4 is in sliding contact with the middle block 2 and the removal block 310, and the connection is sealed.

[0050] During use, when it is necessary to replace materials of different colors to produce packaging bag films of different colors, after the material of the previous color is extruded, a cleaning agent mixed with an abrasive is added, and the screw, barrel, filter plate 101, mold and other important parts in the extruder body 1 are cleaned by the cleaning agent mixed with an abrasive. The side of the filter plate 101 facing the screw and the filter holes on the filter plate can fully contact and rub with the cleaning agent mixed with an abrasive, and the contaminants attached to the side of the filter plate 101 facing away from the screw are removed by removing the block 310 to prevent the contaminants from contaminating the next batch of materials;

[0051] When the cleaning agent mixed with abrasive flows to the filter plate 101 under the conveying of the extruder body 1, the electric push rod 313 is started to drive the support plate 312 to move downward, the support plate 312 drives the fixed plate 311 to move downward, the fixed plate 311 drives the rotating shaft 39 to move, the rotating shaft 39 drives the removal block 310 to move downward, so that the removal block 310 extends from the middle block 2, until the rotating shaft 39 and the filter plate 101 are in a coaxial state, the electric push rod 313 stops, during which the rotating shaft 39 drives the support rod 38, the movable shaft 2 37 and the lower sliding rod 36 to move downward, and the lower sliding rod 36 is made to move linearly along the upper sliding rod 34 through the sliding cooperation between the lower sliding rod 36 and the upper sliding rod 34, and the magnet 35 is magnetically connected to the lower sliding rod 36, so that the upper sliding rod 34 and the lower sliding rod 36 can be combined into a whole when there is no external force.

[0052] At the same time, the micro motor 3 is started, and the output shaft 31 is driven to rotate by the micro motor 3, and the output shaft 31 drives the connecting rod 32 to rotate, and the connecting rod 32 drives the movable shaft 1 33 to rotate with the output shaft 31 as the axis, and the movable shaft 1 33 drives the upper sliding rod 34 to make an arc motion with the output shaft 31 as the axis, and the upper sliding rod 34 drives the lower sliding rod 36 to move synchronously through the magnet 35, and the lower sliding rod 36 drives the movable shaft 2 37 to move, and the movable shaft 2 37 drives the support rod 38 to rotate with the rotating shaft 39 as the axis, and the support rod 38 drives the rotating shaft 39 to rotate, and the rotating shaft 39 drives the removal block 310 to rotate, and the abrasive flowing from the filter hole to the back of the filter plate 101 is blocked by the removal block 310 and squeezed on the back of the filter plate 101, and the pollutants attached to the back of the filter plate 101 are removed by the cooperation between the removal block 310 and the abrasive;

[0053] When the electric push rod 313 drives the removal block 310 to extend out of the middle block 2, the fixed plate 311 will squeeze the baffle 4 downward, so that the baffle 4 drives the mounting column 41 to move downward, and the mounting column 41 drives the mounting rod 42 to move downward. The mounting rod 42 flips downward with the support shaft 43 as the axis, and the support shaft 43 is used as the axis through the fixed block 44. The middle block 2 provides a supporting force to the fixed block 44, and then the lower sliding rod 36 and the baffle 4 are slidably abutted, so that the baffle 4 is always kept in a downward flipped open state. At this time, part of the cleaning agent mixed with abrasives will flow into the water receiving box 22 along the drainage channel. The water receiving box 22 is plugged into the mounting block 21 through a pin, and the mounting block 21 is fixed to the middle block 2.

[0054] Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that: a decontamination component for removing pollutants and a reinforcement component for enhancing the removal effect are provided in the middle block 2, and the reinforcement component includes:

[0055] A sliding column 51 is slidably arranged in the removal block 310, and an extrusion block 5 is fixedly installed at one end of the sliding column 51. Two inclined surfaces are arranged at one end of the extrusion block 5. A positioning plate 53 is fixedly installed on the sliding column 51, and a power slider 58 is fixedly installed at the other end of the sliding column 51. A driven slider 57 is slidably abutted on the power slider 58. The surfaces of the power slider 58 and the driven slider 57 that are close to each other are both inclined surfaces and are adapted to each other. One end of the driven slider 57 is fixedly installed on the supercharging plate 54, and a moving slider 510 is fixedly installed on the side wall of the supercharging plate 54. A fixed slider 59 is slidably abutted on the moving slider 510. One end of the fixed slider 59 is fixedly mounted on the removal block 310, and the surfaces of the movable slider 510 and the fixed slider 59 that are close to each other are both inclined and adapted to each other. A group of steel sheets 55 are fixedly mounted on one end of the boost plate 54, and there are gaps between the steel sheets 55. A spring 52 is fixedly mounted on the side wall of the positioning plate 53, and the other end of the spring 52 is fixedly mounted in the removal block 310. The spring 52 is slidably mounted on the sliding column 51, and a moving electromagnet 512 is fixedly mounted on the side wall of the positioning plate 53. A fixed electromagnet 511 is connected to the side wall of the moving electromagnet 512, and one end of the fixed electromagnet 511 is fixedly mounted in the removal block 310.

[0056] When in use, when the removal block 310 extends from the middle block 2 and rotates with the rotating shaft 39 as the axis to perform a decontamination operation, the removal block 310 drives the sliding column 51 to rotate synchronously, and the sliding column 51 drives the extrusion block 5 to rotate synchronously with the rotating shaft 39 as the axis. The inclined surface of the extrusion block 5 slides and abuts against the side of the fixed plate 311, so that the extrusion block 5 drives the sliding column 51 to move toward the side close to the filter plate 101, and the sliding column 51 drives the power slider 58 to move, and the power slider 58 squeezes the driven slider 57 to move, and the driven slider 57 drives the booster plate 54 to move, and the booster plate 54 drives the sliding shaft 56 to move, and the sliding shaft 56 and the removal block 310 slide in cooperation, so that the booster plate 54 can only move linearly along the removal block 310 during the movement;

[0057] At the same time, the booster plate 54 drives the movable slider 510 to move, and the movable slider 510 slides and abuts against the fixed slider 59, so that the movable slider 510 can move along the inclined surface of the fixed slider 59, so that the booster plate 54 extends from the removal block 310 to approach the filter plate 101 and can approach the edge dead angle where the barrel and the filter plate 101 contact, thereby further reducing the gap between the removal block 310 and the filter plate 101, increasing the pressure of the removal block 310 on the abrasive, so that during the rotation of the removal block 310, the removal block 310 and the abrasive can cooperate with each other to fully remove the pollutants on the back of the filter plate 101;

[0058] The pressurizing plate 54 drives the steel sheet 55 to move toward the edge dead corner. When the steel sheet 55 abuts against the inner wall of the barrel and the filter plate 101, it will deform at a certain angle to open or close. In this process, the pollutants at the edge dead corner are removed by the steel sheet 55. When the extrusion block 5 is no longer subjected to the extrusion force of the fixed plate 311, the whole is reset to the initial state under the action of the spring 52. Fig.12 shown.

[0059] In another embodiment different from the aforementioned embodiment, the sliding column 51 provides support force for the positioning plate 53, the positioning plate 53 provides support force for the moving electromagnet 512, and the removal block 310 provides support force for the fixed electromagnet 511. By changing the magnetism between the moving electromagnet 512 and the fixed electromagnet 511, the moving electromagnet 511 drives the positioning plate 53 and the sliding column 51 to continuously approach and move away from the fixed electromagnet 511, so that the booster plate 54 and the steel sheet 55 of the removal block 310 can move continuously during the rotation process, thereby fully removing the pollutants on the back side of the entire filter plate 101 and the dead corners on the edge between the filter plate 101 and the barrel.

[0060] In another embodiment different from the aforementioned embodiment, a pressure sensor is installed on both sides of the filter plate 101, and the pressure changes on both sides of the filter plate 101 are detected by the pressure sensors on both sides. The blockage condition of the filter plate 101 is judged by the pressure change, so as to select the cleaning time and cleaning method. The pressure sensor is a high temperature resistant sensor including but not limited to the model XTEH-10LAC-190M.

[0061] Embodiment 3, this embodiment is different from Embodiment 2 in that the technical solution includes: a connecting plate 6 is fixedly installed on the side wall of the positioning plate 53, an inner sliding rod 61 is fixedly installed on the side wall of the connecting plate 6, one end of the inner sliding rod 61 is slidably inserted into the removal block 310, a reinforcing plate 62 is fixedly installed on one end of the inner sliding rod 61, and a group of steel bars 63 are fixedly installed on the reinforcing plate 62.

[0062] When in use, the positioning plate 53 provides support force to the connecting plate 6, and the connecting plate 6 provides support force to the inner sliding rod 61. The inner sliding rod 61 slides with the removal block 310, and the inner sliding rod 61 provides support force to the reinforcing plate 62. When the positioning plate 53 moves toward the side close to the filter plate 101 under the drive of the moving electromagnet 510 or the extrusion block 5, the positioning plate 53 synchronously drives the connecting plate 6 to move, so that the connecting plate 6 drives the inner sliding rod 61 to move, and the inner sliding rod 61 drives the reinforcing plate 62 to move, so that the reinforcing plate 62 drives the steel bar 63 close to As the removal block 310 rotates, the reinforcing plate 62 and the steel bar 63 can extend out to clean the back of the filter plate 101. At the same time, the steel bar 63 is slightly longer than the reinforcing plate 62, so that when the steel bar 63 encounters a filter hole during rotation, it can be stuck into a small part of the filter hole. At the same time, the steel bar 63 has a certain elasticity, so that after the steel bar 63 is stuck into the filter hole, it can bounce in the filter hole as the removal block 310 rotates, thereby cleaning the pollutants attached to the edge between the filter hole and the back of the filter plate 101.

[0063] The embodiment of the present invention also provides a method for removing pollutants from a film hot melt extruder for producing packaging bag films, comprising the following steps:

[0064] S1, after the previous remaining material in the extruder body 1 is extruded, a cleaning material mixed with abrasive is added and the extruder body 1 is started;

[0065] S2, cleaning the inside of the extruder body 1 by starting the decontamination component and cooperating with the cleaning material;

[0066] S3, strengthening the cleaning effect by combining the strengthening component with the decontamination component;

[0067] S4, discharging the cleaning material containing pollutants through the die outlet of the extruder body 1;

[0068] S5. After resetting the decontamination component, the extrusion production operation of the next film material can be started.

[0069] During cleaning, the extrusion speed of the extruder body 1 is between 10 and 13 r / min.

[0070] In another embodiment different from the aforementioned embodiment, the installation position of the rotating shaft 29 and other components is moved upward a short distance, and the length of the arc surface of the removal block 310 close to the steel bar 63 is set to a quarter of the length of the circumference of the barrel. During the extrusion operation of the extruder body 1, the micro motor 3 can be started to drive the removal block 310 to deflect back and forth within a range of 3°-5°. At the same time, the material in the barrel will not overflow from the middle block 2. At the same time, the back and forth deflection of the removal block 310 can squeeze the melted material in the barrel, help to discharge the bubbles in the material, improve the product quality, and avoid the former material remaining on the removal block 310 during the extrusion production process, thereby contaminating the latter material.

[0071] In another embodiment different from the aforementioned embodiment, the cross-section of the reinforcing plate 62 is set to be rectangular, and the reinforcing plate 62 is no longer set close to the lower edge of the removal block 310 but is arranged slightly higher, so that when the removal block 310 has not yet extended from the middle block 2, the reinforcing plate 62 and the steel bar 63 will not contact the molten material in the barrel, thereby preventing the former material from remaining on the steel bar 63 during the extrusion production process and contaminating the latter material.

[0072] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film hot melt extruder for producing packaging bag films, comprising an extruder body (1), and a filter plate (101) detachably mounted in the extruder body (1) for filtering impurities, characterized in that: The filter plate (101) is provided with an intermediate block (2), wherein a decontamination component for removing pollutants and an enhancement component for enhancing the removal effect are arranged in the intermediate block (2), wherein the decontamination component comprises: A removal block (310) is slidably mounted in the middle block (2) and is used to remove pollutants on the back of the filter plate (101); a rotating shaft (39) is fixed on the side wall of the removal block (310); and a fixing plate (311) is passed through the rotating shaft (39); An electric push rod (313) has one end fixedly mounted on the top of the middle block (2) for driving the removal block (310) to move, and the other end of the electric push rod (313) is fixed with a support plate (312), and the bottom of the support plate (312) is fixed to the top of the fixed plate (311); A micro motor (3) is mounted on the top of the middle block (2) via a motor seat and is used to drive the removal block (310) to rotate; The reinforcing component comprises a boosting plate (54) slidably mounted on a removal block (310); a sliding column (51) is slidably inserted into the removal block (310); an extrusion block (5) is fixed to one end of the sliding column (51); a positioning plate (53) is fixed to the sliding column (51); a power slider (58) is fixed to the other end of the sliding column (51); a driven slider (57) is abutted against the power slider (58); and one end of the driven slider (57) is fixed to the boosting plate (54); A movable slider (510) is fixed on the side wall of the boosting plate (54), a fixed slider (59) is abutted against the movable slider (510), one end of the fixed slider (59) is fixed on the removal block (310), and a steel sheet (55) is fixed on one end of the boosting plate (54); A spring (52) is fixed on the side wall of the positioning plate (53), the other end of the spring (52) is fixed in the removal block (310), the spring (52) is sleeved on the sliding column (51), a moving electromagnet (512) is fixed on the side wall of the positioning plate (53), a fixed electromagnet (511) is connected to the side wall of the moving electromagnet (512), and one end of the fixed electromagnet (511) is fixed in the removal block (310).

2. A film hot melt extruder based on packaging bag film production according to claim 1, characterized in that: An output shaft (31) is connected to the output end of the micro motor (3), a connecting rod (32) is fixed to one end of the output shaft (31), one end of the connecting rod (32) is movably connected to a movable shaft (33), one end of the movable shaft (33) is movably connected to an upper sliding rod (34), a magnet (35) is fixed to the bottom of the upper sliding rod (34), a lower sliding rod (36) is provided on the outer sliding sleeve of the upper sliding rod (34), and the magnet (35) and the lower sliding rod (36) are connected by magnetic attraction.

3. A film hot melt extruder based on packaging bag film production according to claim 2, characterized in that: A second movable shaft (37) is movably connected to the side wall of the lower sliding rod (36), and the other end of the second movable shaft (37) is movably connected to a support rod (38), and the side wall of the support rod (38) is fixed to one end of the rotating shaft (39).

4. A film hot melt extruder based on packaging bag film production according to claim 1, characterized in that: A mounting block (21) is fixed on the side wall of the intermediate block (2), a water receiving box (22) is plugged into the mounting block (21) via a latch, a fixing block (44) is fixed on the inner wall of the intermediate block (2), a support shaft (43) is hinged on the side wall of the fixing block (44) via a torsion spring, a mounting rod (42) is movably mounted on one end of the support shaft (43), one end of the mounting rod (42) is connected to the side wall of the mounting column (41) via the mounting shaft, a baffle (4) is fixed to the bottom of the mounting column (41), the baffle (4) is in sliding contact with the intermediate block (2) and the removal block (310), and a sealing arrangement is provided at the connection.

5. The film hot melt extruder based on the production of packaging bag film according to claim 1, characterized in that: A connecting plate (6) is fixed to the side wall of the positioning plate (53), an inner sliding rod (61) is fixed to the side wall of the connecting plate (6), one end of the inner sliding rod (61) is slidably inserted into the removal block (310), a reinforcing plate (62) is fixed to one end of the inner sliding rod (61), and a steel bar (63) is fixed to the reinforcing plate (62).

6. A method for removing pollutants from a film hot melt extruder for producing packaging bag films according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, after the previous remaining material in the extruder body (1) is extruded, a cleaning material mixed with abrasive is added and the extruder body (1) is started; S2, cleaning the inside of the extruder body (1) by starting the decontamination component and using a cleaning material; S3, strengthening the cleaning effect by combining the strengthening component with the decontamination component; S4, discharging the cleaning material containing pollutants through the die outlet of the extruder body (1); S5. After resetting the decontamination component, the extrusion production operation of the next film material can be started.

7. The method for removing pollutants from a film hot melt extruder for producing packaging bag films according to claim 6, characterized in that: During cleaning, the extrusion speed of the extruder body (1) is between 10 and 13 r / min.

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