Packing method and packing device for aramid pulp

Abstract

The embodiment of the invention provides a packaging method and a packaging device for aramid pulp, and relates to the field of material packaging. The packaging method for the aramid pulp comprises the following steps: conveying and weighing materials; extruding the materials to form material blocks; the bag film is formed, and the material blocks are bagged to form material bags; rechecking the material bag; and the rechecked material bags are stacked. Compared with the prior art, the packaging method for the aramid pulp optimizes the packaging process, avoids the weight difference by rechecking the material bag, and further prevents the negative influence on the overall quality.

Description

Technical Field

[0001] The invention relates to the field of material packaging, and in particular to a packaging method and a packaging device for aramid pulp. Background Art

[0002] The existing aramid pulp packaging process is mostly manual work with a low degree of automation, and the material blocks are not re-inspected after bagging, resulting in large differences in the weight of different bags, which in turn has a negative impact on the overall quality. Summary of the invention

[0003] The present invention provides a packaging method and a packaging device for aramid pulp, which can improve the automation degree of packaging operations and can re-inspect the bagged material blocks, thereby avoiding weight differences and preventing negative impacts on overall quality.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] An embodiment of the present invention provides a packaging method for aramid pulp, comprising:

[0006] Transport and weigh materials;

[0007] Extruding the material to form a block;

[0008] Forming a bag film and bagging the material blocks to form a material bag;

[0009] Re-inspecting the bag;

[0010] The re-inspected bags are palletized.

[0011] Optionally, before the step of transferring and weighing the material, the packaging method for aramid pulp further comprises:

[0012] The material is subjected to a destaticizing operation.

[0013] Optionally, the step of re-inspecting the material bag includes:

[0014] reweighing the bags; and / or,

[0015] The material bag is subjected to metal detection.

[0016] Optionally, after the step of re-inspecting the material bags and before the step of palletizing the re-inspected material bags, the packaging method for aramid pulp further includes:

[0017] The material bags are subjected to labeling operation.

[0018] The embodiment of the present invention further provides a packaging device for aramid pulp, which is used to implement the packaging method for aramid pulp. The packaging device for aramid pulp comprises:

[0019] The raw material storage tank, transmission weighing mechanism, briquetting mechanism, bag making mechanism, re-inspection mechanism and palletizing mechanism are arranged in sequence;

[0020] Among them, the raw material storage tank is used to output the material, the transmission and weighing mechanism is used to transmit and weigh the material, the briquetting mechanism is used to extrude the material to form the material block, the bag making mechanism is used to shape the bag film and bag the material block to form the material bag, the re-inspection mechanism is used to re-inspect the material bag, and the stacking mechanism is used to stack the material bag.

[0021] Optionally, the raw material storage tank includes a tank body, a stirring paddle and a discharge valve, wherein the stirring paddle is disposed in the tank body and is used to stir the material, and the discharge valve is rotatably connected to the bottom of the tank body and is used to rotate and discharge the material.

[0022] Optionally, the packaging device for aramid pulp further includes a static electricity removal mechanism, and the static electricity removal mechanism is arranged between the raw material storage tank and the transmission weighing mechanism.

[0023] Optionally, the bag film is a three-layer structure, and the melting point of the middle layer is higher than the melting points of the upper and lower layers;

[0024] And / or, the bag film comprises an antistatic agent, and the content of the antistatic agent is 0.1% to 0.3%;

[0025] And / or, the bag film is a structure of at least two layers, at least one layer of which is a PE film or a PVC film or a HDPE film;

[0026] And / or, the bottom of the material bag is formed with a flange angle;

[0027] And / or, the edge of the compression cavity of the pressing block mechanism is a curved surface.

[0028] Optionally, the re-inspection mechanism comprises a re-weighing machine, and the re-weighing machine is used to re-weigh the material bag;

[0029] And / or, the re-inspection mechanism includes a metal detector, and the metal detector is used to perform metal detection on the material bag.

[0030] Optionally, the packaging device for aramid pulp further comprises a labeling machine, and the labeling machine is used to label the material bags.

[0031] The beneficial effects of the baling method and baling device for aramid pulp according to the embodiments of the present invention include, for example:

[0032] The packaging method for aramid pulp includes conveying and weighing materials; extruding materials to form material blocks; forming bag films and bagging the material blocks to form material bags; re-inspecting the material bags; and stacking the re-inspected material bags. The packaging method for aramid pulp optimizes the packaging process compared to the prior art, avoids weight differences by re-inspecting the material bags, and thus prevents negative impacts on the overall quality.

[0033] The packaging device for aramid pulp includes: a raw material storage tank, a transmission and weighing mechanism, a briquetting mechanism, a bag making mechanism, a re-inspection mechanism and a stacking mechanism which are arranged in sequence; the raw material storage tank is used to output materials, the transmission and weighing mechanism is used to transmit and weigh materials, the briquetting mechanism is used to extrude materials to form blocks, the bag making mechanism is used to form bag films and bag the blocks to form bags, the re-inspection mechanism is used to re-inspect the bags, and the stacking mechanism is used to stack the bags. The packaging device for aramid pulp can improve the automation of packaging operations through the coordinated operation of various mechanisms, and can re-inspect the bagged blocks, thereby avoiding weight differences and preventing negative impacts on overall quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of a process for packaging aramid pulp provided in an embodiment of the present invention;

[0036] Figure 2 It is a schematic structural diagram of a packaging device for aramid pulp provided in an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the structure of a raw material storage tank provided in an embodiment of the present invention;

[0038] Figure 4 It is a schematic structural diagram of a sealing knife provided in an embodiment of the present invention;

[0039] Figure 5 It is a schematic structural diagram of the long and short side sealing structure provided in an embodiment of the present invention.

[0040] Icons: 100-packing device for aramid pulp; 110-raw material storage tank; 111-tank body; 112-stirring paddle; 1121-spindle; 1122-stirring blade; 1123-stirring blade; 113-discharging valve; 120-transmission weighing mechanism; 130-briquetting mechanism; 140-bag making mechanism; 145-sealing knife; 1451-base; 1452-blade; 1453-recessed groove; 149-long and short side sealing structure; 150-re-inspection mechanism; 152-re-weighing machine; 154-metal detector; 160-stacking mechanism; 170-static removal mechanism; 180-labeling machine. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0046] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0047] Unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0049] As mentioned in the background technology, the existing aramid pulp packaging process is mostly manual work with a low degree of automation, and the bagged material blocks are not re-inspected, resulting in large differences in the weight of different bags, which in turn has a negative impact on the overall quality.

[0050] In addition, the existing packaging devices and packaging methods also have certain limitations in other aspects. For example, the sealing performance of the existing pulp packaging is poor, and air and moisture can easily enter the pulp packaging, affecting the stability of pulp use and even causing pulp performance degradation; it is difficult to pack wet pulp with a large water content, and the existing packaging and packaging methods have poor water and air blocking capabilities; during the packaging molding process, the adsorption of the material and the cavity causes uneven processing, and the packaging weight is difficult to control. During the transportation and storage of pulp, the pulp product is fluffy and has a low volume density, resulting in high transportation and storage costs. The existing pulp compression method only compacts the pulp fibers, and the volume after packaging is still large, which is not easy to transport or store. At the same time, the compacted density is uneven, which may produce lumps and cause unqualified product quality. In addition, during the packaging process, wet pulp still has the problem of lumps caused by stress generated by the packaging method, and there is also the problem of material adhering to the inner wall of the bag due to electrostatic adsorption.

[0051] Please refer to Figure 1 and Figure 2 The packaging method and packaging device for aramid pulp provided in the embodiments of the present invention can solve the above problems, which will be described in detail below.

[0052] Embodiment 1

[0053] Please refer to Figure 2 The packaging device 100 for aramid pulp provided in the embodiment of the present invention can solve the above problems, which will be described in detail below.

[0054] The packaging device 100 for aramid pulp comprises a raw material storage tank 110, a transmission weighing mechanism 120, a briquetting mechanism 130, a bag making mechanism 140, a re-inspection mechanism 150 and a palletizing mechanism 160 which are arranged in sequence;

[0055] Among them, the raw material storage tank 110 is used to output materials, the transmission and weighing mechanism 120 is used to transmit and weigh materials, the briquetting mechanism 130 is used to extrude materials to form material blocks, the bag making mechanism 140 is used to shape bag films and bag the material blocks to form material bags, the re-inspection mechanism 150 is used to re-inspect the material bags, and the stacking mechanism 160 is used to stack the material bags.

[0056] During operation, the packaging device 100 for aramid pulp can improve the automation of packaging operations through the coordinated operation of various mechanisms, and can re-inspect the bagged material blocks to avoid weight differences and prevent negative impacts on overall quality.

[0057] Please refer to Figure 3 The raw material storage tank 110 includes a tank body 111, a stirring paddle 112 and a discharge valve 113. The stirring paddle 112 is disposed in the tank body 111 and is used to stir the material. The discharge valve 113 is rotatably connected to the bottom of the tank body 111 and is used to rotate and discharge the material.

[0058] During the working process, the material will first enter the tank body 111, and the stirring paddle 112 will stir the material. After stirring to a suitable degree, the discharge valve 113 will open to facilitate the discharge of the material. At the same time, in order to avoid the material from sticking and causing blockage during the discharge, the discharge valve 113 can be rotated relative to the tank body 111 during the discharge process, thereby realizing the rotary discharge of the material. After the discharge is completed, the discharge valve 113 is closed to prevent the continuous discharge from having a negative impact on the uniformity of the weight of subsequent bags.

[0059] Furthermore, in order to improve the stirring and mixing effect of the material, the stirring paddle 112 can be made into a variable diameter structure. During the stirring process, the material can be mixed in the front-to-back direction, the left-to-right direction, and the up-and-down direction, further reducing the volume fluctuation caused by the loose material and making the weight distribution of the material more uniform.

[0060] Please refer to Figure 3In this embodiment, the stirring paddle 112 can have three layers of stirring blades 1122, and the three layers of stirring blades 1122 are arranged in sequence along the axial direction of the main shaft 1121 of the stirring paddle 112. Each layer of stirring blades 1122 is formed with stirring sub-blades 1123 extending in the vertical direction. The main shaft 1121 can rotate during the stirring process, thereby driving the stirring blades 1122 and the stirring sub-blades 1123 to rotate at the same time.

[0061] Specifically, there are two stirring blades 1123 on the first layer of stirring blades 1122, and the two stirring blades 1123 are arranged about the first stirring blade 1122 in the axial direction and symmetrical about the main shaft 1121 of the stirring paddle 112 in the radial direction; there are four stirring blades 1123 on the second layer of stirring blades 1122, of which two stirring blades 1123 are located at the end of the stirring blade 1122 away from the main shaft 1121, and the other two stirring blades 1123 are arranged at positions close to the two stirring blades 1123 of the first layer, but in the radial direction, the stirring blade 1123 on one side of the first layer is located between the two stirring blades 1123 on the same side of the second layer; there are two stirring blades 1123 on the third layer, which are respectively arranged at the end of the stirring blade 1122 away from the main shaft 1121. The stirring blades 1123 are interlaced with each other, which can enhance the flow effect of the material during the stirring process.

[0062] Furthermore, the main shaft 1121 can move axially under the action of external force, thereby achieving stirring of materials at different heights in the tank body 111. Specifically, the power source of the main shaft 1121 can be set at the top of the tank body 111, and its power source can be a rotary electric cylinder, a rotary air cylinder or a rotary hydraulic cylinder, and its specific power form is not limited.

[0063] Of course, in other embodiments of the present invention, the stirring paddle 112 may also have double-layer, quadruple-layer, five-layer, etc. stirring blades 1122, and the number of stirring sub-blades 1123 on each layer of stirring blades 1122 may also be one, two, four groups, etc., and the specific setting structure of the stirring paddle 112 is not limited.

[0064] It should be noted that in the material discharge structure, a variable diameter screw can be provided in the discharge port of the tank body 111, and the diameter of the variable diameter screw gradually increases from the root to the top, thereby facilitating the uniform production of the material. Compared with the structure in which the diameter gradually decreases from the root to the top, the material will not be over-extruded.

[0065] After the material is unloaded, the material is transported and weighed by the transport weighing mechanism 120. Specifically, the transport weighing mechanism 120 can be a belt scale, which can transport the material toward the briquetting mechanism 130 through a belt while achieving weighing, and the briquetting mechanism 130 briquetting the transported material.

[0066] It is worth noting that in order to ensure that the material after being transmitted by the transmission weighing mechanism 120 can smoothly enter the briquetting mechanism 130 for briquetting operation, a lower hopper can be provided between the transmission weighing mechanism 120 and the briquetting mechanism 130. The lower hopper can be located at the lower side of the end of the transmission weighing mechanism 120 away from the tank body 111 and at the upper side of the briquetting mechanism 130, so that the material can first enter the lower hopper and then enter the briquetting mechanism 130. In addition, the lower hopper can be made to have a structure with a large upper part and a small lower part, so that the material can be gathered first when it is pressed into the briquetting mechanism 130, so as to facilitate the subsequent briquetting operation.

[0067] Please refer to Figure 2 As for the operation process of the briquetting mechanism 130, it can specifically pre-compress the material by pushing the pre-compression rotating beam through the pre-compression cylinder, and compress it downward to a first preset width (about 350mm) and a first preset height (about 280mm); then the main pressure cylinder drives the main pressure movable beam to push the pre-compressed material to the direction of the vertical pressure cylinder to further compress it to a first preset length (about 550mm); then the vertical pressure cylinder drives the vertical pressure movable beam to push the compressed material downward to a fixed length to a first preset width (about 350mm); then the gate cylinder pulls in the gate to form a briquetting fixed length cavity, further compresses the length, width and height, and then pushes out the gate through the gate cylinder to form a briquetting outlet channel; finally, the pushing block cylinder drives the pushing block movable beam to push the briquetting through the gate buckle and the briquetting outlet to push the material block to the bag making mechanism 140 position.

[0068] It is worth noting that the briquetting mechanism 130 limits the external dimensions of the material blocks during the briquetting operation, so that the weight of the material blocks can also be controlled within 5.0kg to 5.3kg per bag, which can specifically be 5.0kg, 5.1kg, 5.2kg, 5.3kg, etc.

[0069] In addition, during the briquetting process, by adjusting the right-angled edge of the compression cavity to a curved surface, the problem of unstable compaction density, uneven compaction and hard lumps is solved. In the compression process, the friction between the material and the inner cavity of the bag is reduced, the stress concentration is reduced, and the conditions for the formation of hard lumps are eliminated. Specifically, the curved surface is preferably a 60° arc.

[0070] Please refer to Figure 2 , Figure 4 and Figure 5As for the operation process of the bag making mechanism 140, it can specifically drive the film release roller to convey the bag film through the film release motor, and then the bag film is turned into a bag tube shape through the forming component, and then the bag film is hot-seamed by the tube making component, and then the bag bottom and bag opening position of the bag film are hot-seamed by the sealing component, and full bags are divided to bag the material blocks.

[0071] Specifically, the bag making mechanism 140 can include a sealing knife 145, which includes a base 1451 and a blade 1452. A recessed groove 1453 is formed in the middle of the base 1451. The blade 1452 is located in the middle of the base 1451 and the recessed groove 1453. The tip of the blade 1452 is flush with the top surface of the base 1451. The recessed groove 1453 is a V-shaped structure, and its recessed side wall gradually approaches the bottom surface of the base 1451 along the direction approaching the blade 1452.

[0072] It is worth noting that during the bag making process, the material bag can be designed with a flange angle, which is formed at the bottom of the material bag and has an angle of about 60°, so as to improve the packaging sealing performance, avoid the negative impact on the material stability after the mixing of air and moisture, and prevent the performance of the material from being reduced after the mixing; at the same time, a long and short side sealing structure 149 is formed by the flange, which can reduce the length of the contact line during heat sealing and reduce the heat sealing defect rate; and the triangular structure formed by the angle setting has higher strength than the conventional rectangular structure.

[0073] Furthermore, during the hot bonding process, the heat sealing temperature can be set to 100° C. to 110° C., specifically 100° C., 105° C. and 110° C., and the heat sealing time can be set to 8s to 12s, specifically 8s, 10s and 12s.

[0074] Please refer to Figure 2 In order to perform anti-static treatment on the material and reduce the probability of uneven discharge or uneven packaging of the material due to electrostatic adsorption, the packaging device 100 for aramid pulp may also include an anti-static mechanism 170, and the anti-static mechanism 170 is arranged between the raw material storage tank 110 and the transmission weighing mechanism 120.

[0075] In this embodiment, the static electricity removal mechanism 170 can be an ion fan or an ion rod device, which is used to remove static electricity from the material after unloading. Similarly, in order to avoid increasing static electricity during the material flow process, anti-static flooring, increasing humidity, and static electricity grounding of equipment can be used to eliminate or reduce static electricity.

[0076] Of course, in other embodiments of the present invention, the static electricity removal mechanism 170 may also be other devices with static electricity adsorption or removal functions, and the specific device type is not limited.

[0077] Please refer to Figure 2 As for the selection of bag film materials, antistatic PE film (with polyethylene plastic film as the base material) can be used first, which can reduce the electrostatic attraction between the material and the PE bag, making it convenient to feed the material after unpacking the bag, reducing the material loss caused by electrostatic adsorption; at the same time, it can also reduce dust and improve the working environment for feeding.

[0078] Of course, you can also choose PVC film (mainly composed of polyvinyl chloride, slightly yellowish, translucent, and shiny) or EVA film (environmentally friendly film made of ethylene and vinyl acetate copolymer) with appropriate strength and water and air barrier properties as the material of the bag film. By limiting the material or performance of the bag film, the packaging has excellent water and air barrier properties, and can be used to package wet pulp. Even if the moisture content of wet pulp is 4-5 times that of dry pulp, it can still fully achieve the insulation effect.

[0079] In this embodiment, the bag film is preferably a three-layer structure, and the melting point of the middle layer is higher than that of the upper and lower layers, which can avoid the phenomenon of hole penetration during heat sealing, thereby improving the heat sealing effect. In addition, the components of the bag film can include an antistatic agent, and the content of the antistatic agent is 0.1% to 0.3%, and its specific content can be 0.1%, 0.2%, and 0.3%. Regarding the multi-layer material of the bag film, it can be EVA-PE-EVA film or EVA-PVC-EVA film or LDPE-HDPE-LDPE sandwich structure.

[0080] It should be noted that, for the three-layer bag film, the heat sealing temperature of the surface layer is relatively low, at 100°C to 110°C, which can make the melting point temperature of the middle layer higher, at 126°C to 136°C, thereby avoiding penetration of the middle layer during heat sealing.

[0081] Please refer to Figure 2 The re-inspection mechanism 150 may include at least one of a re-weighing machine 152 and a metal detector 154. The re-weighing machine 152 is used to re-weigh the material bags, and the metal detector 154 is used to perform metal detection on the material bags (or the material bags after re-weighing).

[0082] Specifically, the reweighing machine 152 is mainly used to reweigh the bags after bagging to ensure that the weights of different bags are relatively uniform; the metal detector 154 is used to perform metal detection on the bags to avoid the presence of residual metal that may easily cause static electricity and have a negative impact on subsequent operations.

[0083] Please refer to Figure 2The baling device 100 for aramid pulp further includes a labeling machine 180, which is used to label the re-inspected bags. After the materials have been re-weighed and metal detected, labeling can be performed. After labeling, palletizing and film wrapping are performed. Specifically, palletizing is performed by manipulators. The size of the pallet is about 1100mm*1100mm*1260mm (length*width*height). After palletizing, cardboard is placed on the pallet and PE film is used for film wrapping.

[0084] It is worth noting that in the process of palletizing by the robot, the control program can be pre-stored in the robot, and the staff can select the program through the touch screen, and then control the robot to grab the labeled bags for palletizing. Of course, the staff can also revise the various parameters in the program according to actual needs, and then adjust the mechanical action speed, grabbing force, palletizing order, number of palletizing layers, etc., so as to perform palletizing operations intelligently.

[0085] In addition, in this embodiment, the length of a single bag is usually 550mm, the height is 280mm, the width is 350mm, and the weight is 5kg, or the length of a single bag is usually 1100mm, the height is 280mm, the width is 350mm, and the weight is 10kg; and the length of the whole pallet after stacking is usually 1100mm, the width is 1100mm, the height is 1260mm, and the weight is 120kg. Therefore, the bags on a pallet can be arranged in a two-row, three-column, four-layer structure. Of course, the size of the selected pallet can be adjusted according to the actual loading situation, so that the size of the whole pallet after stacking and the arrangement of the bags on a pallet can be adaptively adjusted.

[0086] Please refer to Figure 1 The embodiment of the present invention further provides a packaging method for aramid pulp, which is implemented by a packaging device 100 for aramid pulp. The packaging method for aramid pulp includes:

[0087] Step S100: stirring the material and discharging it; it is worth noting that the material in the tank body 111 is stirred by the stirring paddle 112 with a variable diameter structure, and after stirring to a suitable degree, the discharge valve 113 is opened and the discharge valve 113 is rotated relative to the tank body 111 to achieve rotary discharge.

[0088] It is worth noting that between step S100 and step S200, the packaging method for aramid pulp further includes step S150: performing a static electricity removal operation on the material to prevent the material from sticking together during subsequent operations due to the presence of static electricity and to prevent the weight of the bag from being uneven. In this embodiment, this step can be implemented by an ion blower and an ion rod device; of course, in other embodiments of the present invention, step S150 can also be implemented by other static electricity removal devices.

[0089] Step S200: transporting and weighing the material; the transporting and weighing process is specifically implemented by the transporting and weighing mechanism 120 .

[0090] Step S300: Extruding the material to form a material block; the entire extrusion process is specifically implemented by the briquetting mechanism 130, which squeezes the length, width and height of the material to appropriate sizes through its internal structure.

[0091] Step S400: forming the bag film and bagging the material blocks to form a material bag; the bag film can be subjected to processes such as bending, hot gluing, and heat sealing in sequence by the bag making mechanism 140, and the formed bag film can be used for bagging.

[0092] Step S500: re-inspect the material bag;

[0093] Specifically, step S500 includes:

[0094] Step S510: reweighing the material bags; this is specifically achieved by a reweighing machine to ensure the uniformity of the weights of different material bags and to avoid excessive weight differences among material bags in the same batch, which would lead to performance deviations.

[0095] Step S520: Perform metal detection on the material bag, which is implemented by a metal detector to detect residual metal in the material bag to avoid the residual metal generating static electricity that increases the adsorption force of the material and prevents negative impact on performance.

[0096] Step S600: Palletizing the re-inspected bags. It is worth noting that after the bags are palletized, they need to be wrapped with PE film to further improve the protective performance of the overall palletizing structure.

[0097] It is worth noting that, between step S520 and step S600, the packaging method for aramid pulp further includes step S580: labeling the material bags, which can be specifically implemented by a labeling machine.

[0098] In addition, in the process of processing materials using the above method, when processing materials with a weight of 5kg and a moisture content of 6%, a 2mm PE black flat film is selected, the heat sealing temperature is 110℃, and the heat sealing time is 10s, so that the packaging size is 550mm*350mm*280mm, and the flange angles on the left and right sides of the bag are 90°. The bags on a pallet are arranged in two rows, three columns and four layers. The pallet size is 1100mm*1100mm*1260mm. Under the condition that each pallet has 24 bags, after testing, the average weight of a single bag is 5.05kg, the average packaging size is 551mm*351mm*280mm, and the compaction density is 0.0936g / cm 3 , fluctuation is less than 0.0001g / cm 3 .

[0099] When processing materials with a weight of 10kg and a moisture content of 30%, a 2mm PE black flat film is selected, the heat sealing temperature is 110℃, the heat sealing time is 10s, the packaging size is 1100mm*350mm*280mm, the flange angles on the left and right sides of the bag are 90°, the bags on a pallet are arranged in a row, three columns and four layers, the pallet size is 1100mm*1100mm*1260mm, and each pallet has 12 bags. After testing, the average weight of a single bag is 10.03kg, the average packaging size is 1101mm*350mm*282mm, and the compaction density is 0.0923g / cm 3 , fluctuation is less than 0.0001g / cm 3 .

[0100] When processing materials with a weight of 10kg and a moisture content of 6%, a 3mm PVC black flat film is selected, the heat sealing temperature is 110℃, the heat sealing time is 10s, the packaging size is 1100mm*350mm*280mm, the flange angles on the left and right sides of the bag are 60°, the bags on a pallet are arranged in a row, three columns and four layers, the pallet size is 1100mm*1100mm*1260mm, and each pallet has 12 bags. After testing, the average weight of a single bag is 10.05kg, the average packaging size is 1103mm*351mm*280mm, and the compaction density is 0.0927g / cm 3 , fluctuation is less than 0.0001g / cm 3 .

[0101] When processing materials with a weight of 10kg and a moisture content of 6%, a 3mm EVA-PE-EVA black flat film is selected, the heat sealing temperature is 105℃, the heat sealing time is 8s, the packaging size is 1100mm*350mm*280mm, the flange angles on the left and right sides of the bag are 60°, the bags on a pallet are arranged in a row of three columns and four layers, the pallet size is 1100mm*1100mm*1260mm, and each pallet has 12 bags. After testing, the average weight of a single bag is 10.05kg, the average packaging size is 1101mm*351mm*279mm, and the compaction density is 0.0932g / cm 3 , fluctuation is less than 0.0001g / cm 3 .

[0102] In summary, the baling device 100 and baling method for aramid pulp provided by the embodiments of the present invention have at least the following advantages:

[0103] (1) The baling device 100 for aramid pulp can utilize the reweigher 152 and the metal detector 154 in the re-inspection mechanism 150 to re-inspect the material bags to ensure the uniformity of the weight of each material bag and avoid the presence of metal residues in the material bags that may cause material adsorption and affect material performance, thereby reducing the defective rate of the material bags.

[0104] (2) The packaging device 100 for aramid pulp can realize streamlined packaging of materials through the coordinated operation of various mechanisms, thereby improving the degree of automation of packaging operations, reducing the labor intensity of staff, improving packaging efficiency and packaging quality, and reducing poor loading caused by manual packaging.

[0105] (3) The baling device 100 for aramid pulp improves the stirring effect of the material by arranging a stirring paddle 112 in the tank body 111, so that the material gathered in the tank body 111 can be fully stirred and mixed, thereby improving the density uniformity of the material; and a discharge valve 113 is rotatably connected to the bottom of the tank body 111, so that the discharge valve 113 can rotate to discharge the material when it rotates relative to the tank body 111, thereby avoiding blockage caused by adhesion of the material during discharge.

[0106] (4) The packaging device 100 for aramid pulp improves the sealing performance of the bag by selecting a suitable bag film and forming the bag by the bag making mechanism 140, thereby isolating the air and moisture in the environment from entering the bag and affecting the performance of the material; it also reduces the length of the heat seal contact line and reduces the heat seal failure rate; and improves the edge strength of the bag through the flange angle structure.

[0107] (5) During the briquetting process, the baling device 100 for aramid pulp solves the problems of unstable compaction density, uneven compaction and hard lumps by adjusting the right angles during the compression process to curved surfaces. During the compression process, the friction between the material and the inner cavity of the bag body is reduced, stress concentration is reduced, and thus the conditions for the formation of hard lumps are eliminated.

[0108] (6) Compared with the prior art, the packaging method for aramid pulp optimizes the packaging process and avoids weight differences by re-inspecting the bags, thereby preventing a negative impact on the overall quality.

[0109] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A packaging method for aramid pulp, characterized in that: include: Transport and weigh materials; Extruding the material to form a block; Forming a bag film and bagging the material blocks to form a material bag; Re-inspecting the bag; The re-inspected bags are palletized.

2. The packaging method for aramid pulp according to claim 1, characterized in that: Before the step of transferring and weighing the material, the packaging method for aramid pulp further includes: The material is subjected to a destaticizing operation.

3. The packaging method for aramid pulp according to claim 1, characterized in that: The step of re-inspecting the bag comprises: reweighing the bags; and / or, The material bag is subjected to metal detection.

4. The packaging method for aramid pulp according to claim 1, characterized in that: After the step of re-inspecting the material bags and before the step of palletizing the re-inspected material bags, the packaging method for aramid pulp further includes: The material bags are subjected to labeling operation.

5. A packaging device for aramid pulp, characterized in that: Used to implement the packaging method for aramid pulp according to any one of claims 1 to 4, the packaging device for aramid pulp comprises: A raw material storage tank (110), a transmission weighing mechanism (120), a briquetting mechanism (130), a bag making mechanism (140), a re-inspection mechanism (150) and a palletizing mechanism (160) are sequentially arranged; The raw material storage tank (110) is used to output the material, the transmission and weighing mechanism (120) is used to transmit and weigh the material, the briquetting mechanism (130) is used to extrude the material to form the material block, the bag making mechanism (140) is used to shape the bag film and bag the material block to form the material bag, the re-inspection mechanism (150) is used to re-inspect the material bag, and the palletizing mechanism (160) is used to palletize the material bag.

6. The baling device for aramid pulp according to claim 5, characterized in that: The raw material storage tank (110) comprises a tank body (111), a stirring paddle (112) and a discharge valve (113); the stirring paddle (112) is arranged in the tank body (111) and is used to stir the material; the discharge valve (113) is rotatably connected to the bottom of the tank body (111) and is used to rotate and discharge the material.

7. The baling device for aramid pulp according to claim 5, characterized in that: The packaging device for aramid pulp further comprises a static electricity removal mechanism (170), wherein the static electricity removal mechanism (170) is arranged between the raw material storage tank (110) and the transmission weighing mechanism (120).

8. The baling device for aramid pulp according to claim 5, characterized in that: The bag film has a three-layer structure, and the melting point of the middle layer is higher than that of the upper and lower layers; And / or, the bag film comprises an antistatic agent, and the content of the antistatic agent is 0.1% to 0.3%; And / or, the bag film is a structure of at least two layers, at least one layer of which is a PE film or a PVC film or a HDPE film; And / or, the bottom of the material bag is formed with a flange angle; And / or, the edge of the compression cavity of the pressing mechanism (130) is a curved surface.

9. The baling device for aramid pulp according to claim 5, characterized in that: The re-inspection mechanism (150) comprises a re-weighing machine (152), and the re-weighing machine (152) is used to re-weigh the material bag; And / or, the re-inspection mechanism (150) includes a metal detector (154), and the metal detector (154) is used to perform metal detection on the material bag.

10. The baling device for aramid pulp according to claim 5, characterized in that: The packaging device for aramid pulp further comprises a labeling machine (180), wherein the labeling machine (180) is used to label the material bags.

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