Multi-purpose full-automatic light bulk material packaging method and equipment

Abstract

The invention belongs to the technical field of automatic packaging, and discloses a multi-purpose full-automatic light bulk material packaging method which comprises the following working steps: opening an opening part of a cylindrical packaging film due to an opening device, clamping the cylindrical film by a film taking device, fixing the opening of the cylindrical film at a discharge hole of a feeding bin, sealing and shearing a bag bottom by a bag bottom sealing and shearing device, fixing an empty bag by a semi-circular bag holding shell, and simultaneously, sealing and shearing the empty bag by a sealing and shearing device. In one circulation of connection and disconnection of the second clutch, when the cross-shaped fixed stock bin rotates by 180 degrees, materials in the stock bin above the cross-shaped fixed stock bin fall into 1 / 2 of the space and then fall into the feeding bin below the cross-shaped fixed stock bin; then, in one circulation of connection and disconnection of the first clutch, the lead screw drives the scraper to push materials in the feeding bin into a newly-made empty bag and then return, a certain space is reserved at a bag opening so that the bag opening sealer can seal the bag, finally, the film taking device loosens the bag opening and returns, the bag bottom sealing and shearing device drives the bag holding shell to be away from the bag, the material bag rolls down along the inclined face to be unloaded, and automatic bag making is achieved by repeating the steps. Full-automatic equipment used in the method is simple in structure and low in production cost.

Description

Technical Field

[0001] The invention belongs to the technical field of fully automatic lightweight bulk material packaging, and in particular relates to a multi-purpose fully automatic lightweight bulk material packaging method and equipment. Background Art

[0002] ‌Fully automatic lightweight bulk packaging equipment‌ is a packaging equipment that can automatically complete the processes of metering, filling, bag making, sealing, cutting, conveying, etc. It is suitable for various bulk materials, such as powder, granules, short fibers, etc., and is widely used in agriculture, food, chemical industry and other industries.

[0003] However, the existing fully automatic lightweight bulk packaging equipment has the following disadvantages: 1) When the shape and size of the matrix bag changes, the adjustment of the machine is more troublesome. First, the matrix bag forming mold (such as patent number: 201922173485.5, patent number 202021810525.9) needs to be replaced, and even the combined mold (such as patent number: 202021412169.5) is also troublesome to adjust. Secondly, when the height of the matrix bag becomes smaller (or larger), the height of its forming mold must also become smaller (or larger). However, because the material at the sealing point will affect the fusion and reduce the sealing quality during hot melt sealing. Therefore, in order to prevent the material from being scattered at the position to be sealed, the material needs to be in a relatively closed space from the discharge of the silo to the filling into the forming mold. Therefore, in the existing equipment, except for the silo and the fixed material box below, almost all the mechanism components need to change their height position to adapt to the height of the forming mold, which is very troublesome to adjust. 2) Only matrix bags can be produced, and the purpose is relatively single. For example, compared with substrate bags, edible fungus bags contain more materials in a cylindrical shape, but existing equipment cannot produce edible fungus bags fully automatically. At present, most of the popular edible fungus bag production in the market is semi-automatic equipment. The bag taking, bag opening, and bag tying (sealing) after filling are all done manually. A few fully automatic equipment, such as automatic bagging and stringing machines, not only have a more complex stringing system, but also require manual bag taking and bag opening. Another type of equipment that replaces manual bag taking and bag opening is to obtain negative pressure between the manipulator and the film with the help of a pneumatic system to achieve the purpose of bag taking and bag opening. However, these types of fully automatic equipment have complex structures and high costs. Summary of the invention

[0004] In view of the above problems and / or existing problems in the existing light bulk material packaging methods, the object of the present invention is to provide a multi-purpose fully automatic light bulk material packaging method, wherein the fully automatic equipment used in the method has a simple structure and low production cost.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multi-purpose fully automatic lightweight bulk material packaging method, the specific steps are as follows: Step 1: The preparation work before equipping the automatic circulation production material bag is as follows: First, according to the material bags of different sizes, select the appropriate cross-fixing bin, the fan-shaped fixing adjustment column, the feeding bin and the feeding scraper, the film taker, and the mouth opener, and assemble them; then, adjust the size of the material storage space of the cross-fixing bin through the fan-shaped fixing adjustment column, that is, the depth of the fan-shaped groove inserted into the cross-fixing bin; third, fill the fan-shaped column storage space V11 of the cross-fixing bin with the evenly mixed material, and Make the cross blades of the cross-fixing bin rotate 90 degrees clockwise; fourth, adjust the bag mouth sealer and the bag bottom sealer and shear, and adjust the bag holding shell that is fixedly connected to the pressure head above the bag bottom sealer and shear, so that it can effectively fix the finished material bag after filling the material; fifth, roll the cylindrical film of corresponding size on the frame, put the film inner support film body into the cylindrical film, and at the same time combine the outer film positioning rod and the film inner support film body of the cylindrical film, and pull the cylindrical film mouth forward until it is flush with the cutting edge of the bag bottom sealer and shear.

[0006] Step 2: The second motor drives the gear rack to drive the film remover to move to the right, so that the elastic movable pressing piece extends into the tube film opening. At this time, the electromagnet connected to the fixed outer ring is energized to generate magnetism, so that a number of elastic movable pressing pieces press the tube film tightly against the fixed outer ring. Then, the second motor reverses to drive the gear rack, causing the film remover to move to the left with the tube film, and the tube film is covered on the outer circumference of the discharge port of the feeding bin.

[0007] Step 3: The third motor drives the small screw with opposite spiral rotation directions at both ends to rotate, so that the upper and lower sliders of the bag bottom sealing and shearing device connected to the two ends of the screw can move towards each other, so that the bag bottom sealing and shearing device can seal the bag opening at the bottom and cut it. Then, the motor stops. At this time, the two sliders of the bag bottom sealing and shearing device stop at the position close to the sealing and shearing. At the same time, the bag holding shell fixed on the upper slider is buckled on the newly made empty bag, and the lower edge is inserted into the long strip hole on the bag unloading slope to make the connection and fixation of the material bag more reliable.

[0008] Step 4: When the first electromagnetic clutch and the second electromagnetic clutch are in the disconnected state, turn on the main motor to drive the arch-breaking mixer in the silo to mix the material. When the material fills the capacity space V12 of the cross-fixed silo, close the second electromagnetic clutch, and the chain drive drives the cross fan blades in the cross-fixed silo to rotate 90 degrees clockwise. The material in the capacity space V11 falls and is filled into the feeding silo. At the same time, the material in the silo fills the capacity space V21. When the cross fan blades of the cross-fixed silo continue to rotate another 90 degrees, the material in the capacity space V12 falls and is also filled into the feeding silo. At the same time, the material fills the capacity space V22. At this time, the second electromagnetic clutch is disconnected, and the cross fan blades in the cross-fixed silo that have rotated 180 degrees continuously stop rotating.

[0009] Step 5: Open the first electromagnetic clutch so that the chain drive drives the screw in the nut screw to rotate, and moves linearly to the right with the push scraper fixed on it, pushing the material in the feeding bin into the newly made empty bag, pressing it appropriately, and leaving a certain space m at the bag mouth to facilitate future sealing. Then, the main motor reverses, driving the screw and the push scraper to return to the leftmost end of the feeding bin, and the electromagnetic clutch is disconnected.

[0010] Step 6: The first motor drives the small screw with opposite spiral rotation directions at both ends to rotate, so that the pressure head and base of the bag sealer connected to the two ends of the screw move closer to each other to achieve sealing. Then, the first motor reverses to make the pressure head and the base return to their original positions and the motor stops.

[0011] Step 7: The electromagnet on the film remover is powered off and demagnetized. At this time, the elastic movable pressing plate rebounds under the action of the spring to loosen the tube film. At the same time, the motor reverses and drives the two sliders on the bag bottom sealing and shearing device to move away from each other and return to their original positions. As a result, the bag holding shell fixedly connected to the slider on the bag bottom sealing and shearing device also loosens the material bag and returns. The material bag filled with material loses its restraint and rolls down the bag unloading slope to complete the automatic production process of a material bag. Using automatic control technology, the above steps 2 to 7 are repeated continuously until the required number of material bags are completed.

[0012] Another object of the present invention is to provide a multi-purpose fully automatic lightweight bulk material packaging equipment, including a main motor, a first electromagnetic clutch, a second electromagnetic clutch, a silo, an arch-breaking mixer and a frame, wherein the main motor is fixedly installed on the left side of the frame, and the silo is fixedly installed on the frame located on the right side of the main motor, the silo is rotatably connected to the arch-breaking mixer through a bearing, and the output shaft of the main motor is fixedly connected to the arch-breaking mixer, and a cross-fixed silo is provided at the bottom end of the silo; the cross-fixed silo is composed of an outer shell and a cross fan blade that can rotate around a central axis, the upper end of the outer shell is connected to the bottom end of the silo, and the bottom end is connected to The upper end of the feeding bin is connected; the bottom of the feeding bin is fixedly mounted on the frame, and a nut screw is arranged inside the frame, and the nut screw is connected to the main motor through the first electromagnetic clutch and chain transmission, and a pushing scraper is arranged on the nut screw, and the pushing scraper slides left and right in the feeding bin; a second motor is fixedly mounted on the frame located at the feeding bin discharge port, and the second motor is fixedly connected to the film remover through the gear in the gear rack, a bag mouth sealer is arranged on the frame located at the feeding bin discharge port, a bag bottom sealer and shearer is arranged on the frame located on the right side of the bag mouth sealer, and an opener is arranged on the frame located on the right side of the bag bottom sealer and shearer.

[0013] The cross material bin comprises a cross partition rotatable around a central axis and a fixed outer shell, and the main motor is connected to the cross partition via a second electromagnetic clutch, the cross partition divides the inner cavity of the cross material bin into four columnar material storage spaces, which are V11, V12, V21 and V22 respectively, and a material adjustment column with a fan-shaped cross section is inserted in the material storage space.

[0014] The rack in the gear rack and the gear working with the rack are fixedly connected to the second motor shaft. The second motor drives the film remover through the meshing movement of the gear on the rack to achieve left and right linear movement along the guide rail fixed on the frame.

[0015] The film remover comprises a connecting frame, which is fixed on a gear shaft in a gear rack, an outer ring is fixedly installed on the other side of the connecting frame, a plurality of elastic movable pressing sheets are arranged in the fixed outer ring, and an electromagnet is arranged on the outer surface of the fixed outer ring.

[0016] The bag sealer includes a screw with threads of different rotation directions at both ends, and two upper and lower sliders that cooperate with the screw and are respectively provided with threaded holes of different rotation directions. One of the sliders is the pressure head of the bag sealer, and the other slider is the base of the bag sealer. The screw is fixedly connected to the output shaft of the first motor and is fixedly connected to the frame through a bearing seat.

[0017] The bag bottom sealing and shearing device comprises a sealing device and a shearing device, and a third motor drives a screw with threads of different directions at both ends to rotate, driving the upper and lower sliders to move linearly, thereby achieving sealing and shearing. A bag holding shell with a semicircular long tubular shell is provided on the left side of the bag bottom sealing and shearing device, and is fixedly connected to the upper slider in the bag bottom sealing and shearing device. A bag unloading inclined surface is provided on one side of the frame below the bag holding shell.

[0018] The mouth opener includes an inner membrane supporting membrane body, an outer membrane positioning rod and a connecting frame, wherein the connecting frame is fixedly connected to the frame, and the inner membrane supporting membrane body is cylindrical or prismatic, and has two parallel grooves or annular grooves on the outer side surface of the middle cross-section position perpendicular to the center line of the cylinder, which can be clamped by the two rods of the outer membrane positioning rod and will not move randomly along the axial direction.

[0019] Compared with the prior art, the multi-purpose fully automatic lightweight bulk material packaging method of the present invention has the following advantages: The fully automatic lightweight bulk material packaging equipment provided by the present invention can facilitate personnel to adjust the machine according to the shape and size of the matrix bag, thereby saving time and reducing labor intensity to a certain extent. In addition, it can also achieve the purpose of increasing the scope of use, expanding the purpose, simplifying the structure, and reducing the cost investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of the fully automatic lightweight bulk material packaging equipment of the present invention; Figure 2 It is a top view schematic diagram of the fully automatic lightweight bulk material packaging equipment of the present invention; Figure 3 for Figure 1 A magnified schematic diagram of the structural section at AA in the middle; Figure 4 The push scraper is rectangular and the corresponding cross-fixed bin structure is Figure 1 Enlarged schematic diagram of the cross section at AA; Figure 5 It is a schematic diagram of the state of the bag bottom sealing and cutting device and the bag holding shell before sealing and cutting and fixing the empty bag; Figure 6 It is a schematic diagram of the state after the bag bottom sealing and cutting device and the bag holding shell have sealed and fixed the empty bag; Figure 7 This is a schematic diagram of V11 being filled with materials before automatic bag making in the cross-fixed bin; Figure 8 This is a schematic diagram of V12 being filled with materials before automatic bag making in the cross-fixed bin; Fig. 9 This is the first operating state of automatic bag making in the cross-fixed bin, i.e. the schematic diagram of the material filling and feeding bin in V11; Fig.10 This is a schematic diagram of the second operating state of automatic bag making in the cross-fixed bin, i.e. after the material is filled into the feeding bin and before the material is pushed in V12; Fig.11 This is a schematic diagram of the second operating state of automatic bag making in the cross-fixed bin, i.e. after the material in V12 is filled into the feeding bin and pushed out; Fig.12 This is the third operating state of automatic bag making in the cross-fixed bin, i.e. the schematic diagram of the material filling and feeding bin in V21; Fig.13 This is the fourth operating state of automatic bag making in the cross-fixed bin, that is, the schematic diagram of V22 after the material is filled into the feeding bin and before the material is pushed out. Fig.14 This is a schematic diagram of the fourth operating state of automatic bag making in the cross-fixed bin, i.e. after the material is filled into the feeding bin and pushed out in V22; Fig.15 This is a front view schematic diagram of the feeding bin structure; Fig.16 It is a structural schematic diagram of the membrane extractor; Fig.17 It is a schematic diagram of the structure side view of the membrane extractor; Fig.18 This is a schematic diagram of the state where the elastic movable pressing piece of the film remover is inserted into the tube film; Fig.19 This is a schematic diagram of the structural state of the film remover after clamping the tube film; Fig. 20 This is a schematic diagram of the state of the bag sealer before it starts sealing; Fig.21 It is a schematic diagram of the sealing state of the bag sealer; Fig. 22 It is a schematic diagram of the mouth opening structure and the positional relationship between the mouth opening and the tube membrane; Fig.23 Mouth opening device Fig. 22 lateral view of; Fig.24 Mouth opening device Fig. 22 AA section view of the.

[0021] In the figure: main motor 1, first electromagnetic clutch 2, second electromagnetic clutch 3, silo 4, arch-breaking mixer 5, cross-setting silo 6, fan-shaped setting adjustment column 7, feeding silo 8, nut screw 9, push scraper 10, bag mouth sealer 11, forward and reverse spiral screw 111, pressure head 112, base 113, first motor 12, film taker 13, fixed outer ring 131, elastic movable pressing piece 132, connecting frame 133, electromagnet 134, gear rack 14, second motor 15, bag unloading slope 16, third motor 17, bag bottom sealing and shearing device 18, bag holding shell 19, mouth opener 20, film inner support film body 201, film outer positioning rod 202, frame 21. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Figure 1-Figure 24 The present invention provides a structural diagram and a working state diagram of a multi-purpose fully automatic lightweight bulk material packaging device.

[0024] The present invention provides a multi-purpose fully automatic light bulk material packaging method, which includes first opening the film mouth of a tubular packaging film, clamping the tubular film, and covering the film on the tube mouth of a feeding tube, then sealing the bag bottom and cutting it, and finally, loading the material and sealing the bag mouth. The specific steps are as follows: Step 1: When the first electromagnetic clutch 2 and the second electromagnetic clutch 3 are disconnected, turn on the main motor 1. At this time, the arch-breaking mixer 5 in the silo 4 works. When the mixed material fills the storage space V12 of the cross-fixed silo 6, the second electromagnetic clutch 3 is closed, and the chain drive drives the cross-fixed silo 6 to rotate clockwise. When it rotates 90 degrees, the material in the storage space V11 falls and is filled into the feeding silo 8. At the same time, the material in the silo 4 fills the storage space V21, and the cross-fixed silo 6 continues to rotate. When it rotates another 90 degrees, the material in the storage space V12 falls and is filled into the feeding silo 8. At the same time, the material fills the storage space V22. At this time, the second electromagnetic clutch 3 is disconnected, and the cross-fixed silo 6, which has rotated 180 degrees continuously, stops.

[0025] Step 2: The second motor 15 drives the gear rack 14 to drive the film remover 13 to move to the right, so that the elastic movable pressing plate 132 extends into the tube film opening. At this time, the electromagnet 134 connected to the fixed outer ring 131 is energized to generate magnetism, so that a number of elastic movable pressing plates 132 press the tube film tightly against the fixed outer ring 131. Then, the second motor 15 reverses to drive the gear rack 14 to move the film remover 13 to the left, and sleeve it on the outer circumference of the discharge port of the feeding bin 8. If the material bag is a cylinder, the feeding bin 8 and its discharge port are tubular, and the tube film will be sleeved on the outer circumference of the discharge port. Note: In order to save time, the first and second steps can be overlapped appropriately according to the working time of each step; Step 3: The third motor 17 drives the bidirectional spiral small screw to rotate, so that the sliders on the bag bottom sealing and shearing device 18 move toward each other, realize sealing and shearing, and complete the bag making work. After that, the third motor 17 stops rotating. At this time, the sliders on the bag bottom sealing and shearing device 18 will stop at the sealing and shearing position and remain motionless, so that the bag holding shell 19 fixed on a group of sliders is buckled on the upper surface of the bag; Step 4: Open the first electromagnetic clutch 2 to make the chain drive drive the nut screw 9 to work, so that the nut screw 9 pushes the push scraper 10 forward, pushes the material in the feeding bin 8 into the newly made bag, and presses it appropriately, leaving a space of length L near the bag mouth. The size of L is based on the principle that the material collapses after the scraper 10 leaves and does not affect the sealing. If the L space that can be provided cannot meet the needs and affects the sealing effect, then the material humidity and the pressing force of the feeding scraper 10 on the material at the bag mouth can be appropriately increased. Then, the nut screw 9 and the push scraper 10 are returned to the leftmost end of the feeding bin 8, and the first electromagnetic clutch 2 is disconnected; Step 5: The first motor 12 drives the forward and reverse screw rods 111 of the bag sealer 11 to rotate, so that the pressing head 112 and the base 113 move toward each other to achieve sealing, and then the first motor 12 is reversed to return the pressing head 112 and the base 113 to their original positions; Step 6: The electromagnet 134 on the film remover 13 is powered off and demagnetized. At this time, the elastic movable pressing piece 132 rebounds under the action of the spring to release the tubular film. At the same time, the third motor 17 reverses and drives the slider on the bag bottom sealing and cutting device 18 to completely return to its original position; Step 7: Roll the finished material bag down along the bag unloading slope 16 to complete the packaging process of one material bag. This cycle is repeated to enable full-automatic production until the required number of material bags are completed.

[0026] See also Figure 1-Figure 24 A multi-purpose fully automatic lightweight bulk material packaging equipment, including a main motor 1, a first electromagnetic clutch 2, a second electromagnetic clutch 3, a silo 4, an arch-breaking mixer 5, a cross-setting silo 6, a fan-shaped setting adjustment column 7, a feeding silo 8, a nut screw 9, a material pushing scraper 10, a bag mouth sealer 11, a first motor 12, a film taker 13, a gear rack 14, a second motor 15, a bag unloading slope 16, a third motor 17, a bag bottom sealing and shearing device 18, a bag holding shell 19, an opener 20 and a frame 21. The main motor 1 is fixedly installed on the left side of the frame 21, and the silo 4 is fixedly installed on the frame 21 on the right side of the main motor 1. The silo 4 is rotatably connected to the arch-breaking mixer through a bearing. 5, and the output shaft of the main motor 1 is fixedly connected to the arch-breaking mixer 5, a cross-fixed material bin 6 is provided at the bottom end of the silo 4, and the silo 4 and the cross-fixed material bin 6 are in an intercommunication state, a feeding bin 8 is provided at the bottom end of the cross-fixed material bin 6, and the feeding bin 8 and the cross-fixed material bin 6 are in an intercommunication state, the feeding bin 8 is fixedly installed on the frame 21, a film taker 13 is provided on the frame 21 located at the discharge port of the feeding bin 8, a bag mouth sealer 11 is provided on the frame 21 located at the discharge port of the feeding bin 8, a bag bottom sealing and shearing device 18 is provided on the frame 21 located on the right side of the bag mouth sealer 11, and a mouth opener 20 is provided on the frame 21 located on the right side of the bag bottom sealing and shearing device 18; The right half of the feeding bin 8 is a round tube, and the left half needs to be filled with materials from the cross-fixed bin 6. Therefore, the tube wall of the left end of the feeding bin 8 is cut off at the longitudinal connection line with the cross-fixed bin 6, that is, the c1c2 sections of the two at the connection are connected. Generally, the outer packaging of the material bag is made of soft material (such as plastic film, etc.). Therefore, whether it is a pillow bag (such as a matrix bag) or a cylindrical bag (such as a mushroom stick), a round tube-shaped feeding bin can be used to hold the filling bag. However, if the outer packaging of the material is made of hard material (such as hard and thick paper, etc.) into a rectangular cylindrical bag, then the feeding bin 8 can also be made into a rectangular tube.

[0027] A cross partition that can rotate around the central axis is provided in the cross material bin 6, and the main motor 1 is connected to the cross partition through the second electromagnetic clutch 3 and the chain drive. The cross partition divides the inner cavity of the cross material bin 6 into four columnar material storage spaces, which are V11, V12, V21 and V22 respectively, and a fan-shaped material adjustment column 7 is inserted in the material storage space; Among them, V11 and V21 are columnar spaces with fan-shaped cross sections, V12 and V22 are columnar spaces surrounded by arcs, and the materials in the four columnar material storage spaces just meet the needs of two material bags. For example: Fig.10 The two material storage spaces V21 and V22 filled with materials just meet the usage of one material bag. The other half of the material is being sent to the bag by the material pusher 10 in the feeding bin 8. If the material bag is small and the required material is less than the amount that the cross-fixed material bin 6 can provide, then the excess material storage space can be blocked to reduce the material filling. In the present invention, two fan-shaped material adjustment columns 7 are inserted into the two larger material storage spaces V11 and V21. The insertion depth is determined according to the actual requirements of the material bag. The fan-shaped material adjustment column 7 is a fan-shaped cross-section cylinder with the same cross-section as the material storage spaces V11 and V21. The arc shape of the two columnar spaces V12 and V22 surrounded by the arc is the same as the outer shape of the material pusher 10, and the fit is relatively tight, so as to avoid that during the process of the material pusher 10 pushing the material, more materials will flip over from the top of the material pusher 10 and remain in the feeding bin 8 and cannot be effectively pushed.

[0028] A nut screw 9 is provided in the feeding bin 8, and the main motor 1 is connected to the nut screw 9 through the first electromagnetic clutch 2 and the chain drive. A push scraper 10 is provided on the nut screw 9, and the push scraper 10 can slide left and right in the feeding bin 8 to feed or retract.

[0029] A second motor 15 is fixedly mounted on the frame 21 located at the discharge port of the feeding bin 8 , and the second motor 15 is fixedly connected to the film extractor 13 via a gear in the gear rack 14 .

[0030] The film remover 13 comprises a connecting frame 133 , which is arranged on the gear. A fixed outer ring 131 is fixedly mounted on one side of the connecting frame 133 . A plurality of elastic movable pressing sheets 132 are arranged in the fixed outer ring 131 . An electromagnet 134 is arranged on the outer surface of the fixed outer ring 131 .

[0031] The bag sealer 11 is actually equivalent to a device that connects several staplers side by side. The bag sealer 11 includes a screw rod 111 with different rotational threads at both ends, and two upper and lower sliders that cooperate with the screw rod 111 and are respectively provided with threaded holes of different rotational directions. One (upper) slider is the pressure head 112 of the bag sealer 11, and the other (lower) slider is the base 113 of the bag sealer 11, and the screw rod 111 is fixedly connected to the output shaft of the first motor 12, and is fixedly connected to the frame 21 through a bearing seat.

[0032] The bag bottom sealing and shearing device 18 actually includes two parts, a sealing device and a shearing device, and the screw rod with different screw threads at both ends rotates to drive the upper and lower sliders to move linearly to achieve sealing and shearing. The bag bottom sealing and shearing device 18 is the same as the sealing part of the bag mouth sealing device 11, except that the upper slider of the bag bottom sealing and shearing device 18 is fixedly installed with a pressure head, an upper shear blade and a bag holding shell 19, and the lower slider is fixedly installed with a sealing base and a lower shear blade, and the screw rod 111 is fixedly connected to the output shaft of the third motor 17, and is fixedly connected to the frame 21 through a bearing seat.

[0033] The mouth opener 20 includes an inner membrane supporting film body 201, an outer membrane positioning rod 202 and a connecting bracket, and the connecting bracket is fixedly mounted on the frame 21. During operation, the inner membrane supporting film body 201 and the outer membrane positioning rod 202 have no direct mechanical connection, and there is a tubular film in between. The structural shape of the inner membrane supporting film body 201 is a cylinder with a depression in the middle, and the depression is used to place two rollers of the outer membrane positioning rod 202, which can also be made into a dumbbell shape. The function of the inner membrane supporting film body 201 is to open the tubular film, and the outer membrane positioning rod 202 is composed of two freely rotatable (or non-rotatable) rollers (or other shapes) and their brackets, and its function is to support the inner membrane supporting film body 201 in the correct working position without tipping over or shifting. The present invention opens the mouth of the tubular film and takes out the tubular film, not taking bags and opening the bag mouth. A bag unloading slope 16 is fixedly mounted on one side of the frame 21 to facilitate the bag full of materials to roll down and unload.

[0034] In order to prevent the bag from rolling off the inclined surface 16 too early before and after filling, and to prevent the bag from being torn or broken due to excessive feeding pressure of the feeding scraper 10, or the bag from shifting or swelling, etc., a bag holding shell 19 is designed to protect and fix the bag for loading. After the sealing is completed, the upper and lower heads are left here without returning, or slightly returned to a safe distance (in hot melt sealing) to protect and fix the bottom surface of the bag. The bag holding shell 19 is fixed together with the upper half of the slider of the bag bottom sealing and shearing device 18, and the movement direction of the two is perpendicular to the bag unloading inclined surface 16, so that the bag holding is effective. When hot-melt sealing is used, in order to prevent the sealed bag from being burned and damaged, after the sealing is completed, the sealing heads on both sides of the sealer should be relatively separated by a safe distance L. At this time, the bag holding shell 19 will be away from the bag and the bag holding will fail. Therefore, before the machine works, the bag holding shell 19 should be adjusted to move a distance L in the direction close to the bag unloading slope 16, so that after the sealing is completed, the bag holding shell 19 can still effectively hold the bag after the sealing heads on both sides of the sealer are separated by a distance L. However, in this case, when the bag mouth sealer 11 is sealing, the left edge of the bag holding shell 19 will interfere with the bag unloading slope 16 (the right edge is higher than the upper side of the bag unloading slope 16), and in order to prevent the bag holding shell 19 from failing due to excessive bag pressure, a narrow slit is opened in advance at the corresponding position of the bag unloading slope 16, so that the edge of the bag holding shell 19 can be inserted and fixed and avoid interference with the bag unloading slope 16.

[0035] Figure 4 Another embodiment of the present invention is given, when the push scraper is rectangular and the corresponding cross fixed bin structure is Figure 1 Enlarged schematic diagram of the cross section at AA.

[0036] The preparation and adjustment process before working of a multi-purpose fully automatic lightweight bulk material packaging method of the present invention is as follows: Process 1: According to the material bags of different sizes, select the appropriate cross-shaped material bin 6, fan-shaped material adjustment column 7, feeding bin 8 and feeding scraper 10, film taker 13, and mouth opener 20, and assemble them.

[0037] Process 2: Adjust the size of the material storage space of the cross material storage bin 6 through the fan-shaped material storage adjustment column 7, that is, insert the depth of the fan-shaped groove of the cross material storage bin 6 (block the excess material storage space).

[0038] Process 3: Fill the fan-shaped cylindrical material storage space V11 of the cross-fixing bin 6 with the evenly mixed materials, and rotate the cross-fixing bin 6 90 degrees clockwise.

[0039] Process 4: Adjust the bag mouth sealer 11 and the bag bottom sealer 18, install staples etc. as needed, adjust the bag holding shell 19 connected with the bag bottom sealer 18, and make it able to effectively fix the finished bag after filling the material.

[0040] Process 5: Roll and hang a tubular film of corresponding size on the frame 21, and put the inner film support 201 into the tubular film. At the same time, combine the outer film positioning rod 202 with the inner film support 201 of the tubular film, and then pull the tubular film mouth forward until it is flush with the cutting edge of the bag bottom sealing cutter 18.

[0041] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multi-purpose fully automatic lightweight bulk packaging method, characterized in that: The specific steps are as follows: Step 1: The preparation work before equipping the automatic circulation production of material bags is as follows: first, according to the material bags of different sizes, select the appropriate cross-fixing bin (6), the fan-shaped fixing adjustment column (7), the feeding bin (8) and the feeding scraper (10), the film taker (13), and the mouth opener (20), and assemble them; then, adjust the size of the material storage space of the cross-fixing bin (6) through the fan-shaped fixing adjustment column (7), that is, the depth of the fan-shaped groove inserted into the cross-fixing bin (6); third, fill the fan-shaped column material storage space V11 of the cross-fixing bin (6) with the evenly mixed material, and make the cross-fixing bin (6) The cross blades of the silo (6) are rotated 90 degrees clockwise; fourth, the bag mouth sealer (11) and the bag bottom sealer (18) are adjusted, and the bag holding shell (19) fixedly connected to the pressure head above the bag bottom sealer (18) is adjusted so that the finished bag after filling with materials can be effectively fixed during operation; fifth, a cylindrical film roll of corresponding size is mounted on the frame, and the film inner support film body (201) is placed in the cylindrical film. At the same time, the film outer positioning rod (202) is combined with the film inner support film body (201) on which the cylindrical film is mounted, and the cylindrical film mouth is pulled forward until it is flush with the cutting edge of the bag bottom sealer (18); Step 2: The second motor (15) drives the gear rack (14) to drive the film taker (13) to move to the right, so that the elastic movable pressing piece (132) extends into the tube film opening. Then, the electromagnet (134) connected to the fixed outer ring (131) is energized to generate magnetic force, and the suction force causes the plurality of elastic movable pressing pieces (132) to press the tube film onto the fixed outer ring (131). Finally, the second motor (15) drives the gear rack (14) in reverse, so that the film taker (13) moves to the left with the tube film, and the tube film is sleeved on the outer circumference of the discharge port of the feeding bin (8) and fixed. Step 3: The third motor (17) drives the small screw with two ends rotating in opposite directions to rotate, so that the upper and lower sliders of the bag bottom sealing and shearing device (18) connected to the two ends of the screw can move towards each other, so that the bag bottom sealing and shearing device (18) can seal the bag mouth at the bottom and cut it. Then, the motor (17) stops rotating. At this time, the two sliders of the bag bottom sealing and shearing device (18) stop at the position close to the sealing and shearing. At the same time, the bag holding shell (19) fixed on the upper slider is buckled on the newly made empty bag, and the lower edge is inserted into the long strip hole of the bag unloading slope (16) to make the connection and fixation of the material bag more reliable. Step 4: When the first electromagnetic clutch (2) and the second electromagnetic clutch (3) are in the disconnected state, the main motor (1) is turned on to drive the arch-breaking mixer (5) in the silo (4) to mix the material. When the material fills the storage space V12 of the cross-fixed silo (6), the second electromagnetic clutch (3) is closed, and the chain drive drives the cross blades in the cross-fixed silo (6) to rotate 90 degrees clockwise, and the material in the storage space V11 falls and fills into the feeding silo (8). At the same time, the material in the silo (4) fills the storage space V21. When the cross blades of the cross-fixed silo (6) continue to rotate another 90 degrees, the material in the storage space V12 also falls and fills into the feeding silo (8). At the same time, the material fills the storage space V22. At this time, the second electromagnetic clutch (3) is disconnected, and the cross blades in the cross-fixed silo (6) that have rotated 180 degrees continuously stop rotating; Step 5: Open the first electromagnetic clutch (2) so that the chain drive drives the screw in the nut screw (9) to rotate and move linearly to the right with the push scraper (10) fixed thereon, pushing the material in the feeding bin (8) into the newly made empty bag, pressing it appropriately, and leaving a certain space m at the bag mouth to facilitate future sealing. Then, the main motor (1) reverses to drive the screw and the push scraper (10) back to the leftmost end of the feeding bin (8), and the electromagnetic clutch (2) is disconnected; Step 6: The first motor (12) drives the small screw (111) with two ends rotating in opposite directions to rotate, so that the pressure head (112) and the base (113) connected to the two ends of the screw of the bag mouth sealer (11) move closer to each other to achieve sealing. Then, the first motor (12) is reversed to make the pressure head (112) and the base (113) return to their original positions, and the motor (17) stops rotating; Step 7: The electromagnet (134) on the film remover (13) is powered off and demagnetized. At this time, the elastic movable pressing piece (132) rebounds under the action of the spring to loosen the tube film. At the same time, the motor (17) reverses and drives the two sliders on the bag bottom sealing and shearing device (18) to move away from each other and return to their original positions. As a result, the bag holding shell 19 fixedly connected to the slider on the bag bottom sealing and shearing device (18) also loosens the material bag and returns. The material bag filled with material loses its restraint and rolls down along the bag unloading slope (16) to be unloaded, completing the automatic production process of a material bag. Using automatic control technology, the above steps from step 2 to step 7 are continuously repeated until the required number of material bags are produced.

2. A multi-purpose fully automatic light bulk material packaging device, comprising a main motor (1), a first electromagnetic clutch (2), a second electromagnetic clutch (3), a silo (4), a breaker mixer (5) and a frame (21), characterized in that: A main motor (1) is fixedly mounted on the left side of the frame (21); a silo (4) is fixedly mounted on the frame (21) located on the right side of the main motor (1); the silo (4) is rotatably connected to an arch-breaking mixer (5) via a bearing, and an output shaft of the main motor (1) is fixedly connected to the arch-breaking mixer (5); a cross-fixed silo (6) is provided at the bottom end of the silo (4); the cross-fixed silo (6) is composed of an outer shell and cross-shaped fan blades rotatable about a central axis; the upper end of the outer shell is connected to the bottom end of the silo (4), and the bottom end is connected to the upper end of the feeding silo (8); the bottom of the feeding silo (8) is fixedly mounted on the frame (21), and a nut screw (9) is provided inside the silo, and the nut screw (9) is connected to the upper end of the feeding silo (8); The main motor (1) is connected via a first electromagnetic clutch (2) and a chain drive, and a material pushing scraper (10) is provided on the nut screw (9), and the material pushing scraper (10) can slide left and right in the feeding bin (8); a second motor (15) is fixedly mounted on a frame (21) located at the material outlet of the feeding bin (8), and the second motor (15) is fixedly connected to the film extractor (13) via a gear in a gear rack (14); a bag mouth sealer (11) is provided on the frame (21) located at the material outlet of the feeding bin (8), a bag bottom sealer (18) is provided on the frame (21) located on the right side of the bag mouth sealer (11), and a mouth opener (20) is provided on the frame (21) located on the right side of the bag bottom sealer (18).

3. A multi-purpose fully automatic lightweight bulk material packaging equipment according to claim 2, characterized in that: The cross material bin (6) comprises a cross partition (601) that can rotate around a central axis and a fixed housing (602), and the main motor (1) is connected to the cross partition (601) via a second electromagnetic clutch (3), and the cross partition divides the inner cavity of the cross material bin (6) into four columnar material storage spaces, which are respectively V11, V12, V21 and V22, and a material adjustment column (7) with a fan-shaped cross section is inserted into the material storage space.

4. A multi-purpose fully automatic lightweight bulk material packaging equipment according to claim 2, characterized in that: When the cross partition (601) stops rotating and the pusher scraper (10) pushes the material, the surfaces of the cross partition (601) and the pusher scraper (10) that fit together have the same shape and fit closely, so that when the pusher scraper (10) pushes the material, all the material is sent into the bag, thereby preventing a large amount of material from turning over and remaining in the feeding bin (8) and being unable to be effectively pushed.

5. The multi-purpose fully automatic lightweight bulk material packaging equipment according to claim 2, characterized in that: The rack in the gear rack (14) is fixedly connected to the frame (21), and the gear working in cooperation with the rack is fixedly connected to the shaft of the second motor (15). The second motor (15) drives the film remover (13) through the meshing movement of the gear on the rack to achieve left and right linear movement along the guide rail fixed to the frame (21).

6. The multi-purpose fully automatic lightweight bulk material packaging equipment according to claim 2, characterized in that: The film remover (13) comprises a connecting frame (133), wherein the connecting frame (133) is fixed to the shaft of the gear in the gear rack (14) via a bearing, an outer ring (131) is fixedly mounted on the other side of the connecting frame (133), a plurality of elastic movable pressing sheets (132) are provided in the fixed outer ring (131), and an electromagnet (134) is provided on the outer surface of the fixed outer ring (131).

7. The multi-purpose fully automatic lightweight bulk material packaging equipment according to claim 2, characterized in that: The bag sealer (11) is equivalent to a device in which a plurality of staplers are fixed together in parallel, comprising a screw rod (111) with threads of different rotation directions at both ends, and two upper and lower sliders cooperating with the screw rod (111) and respectively provided with threaded holes of different rotation directions, wherein one of the sliders is a pressure head (112) of the bag sealer (11), and the other slider is a base (113) of the bag sealer (11), and the screw rod (111) is fixedly connected to the output shaft of the first motor (12), and is fixedly connected to the frame (21) via a bearing seat.

8. The multi-purpose fully automatic lightweight bulk material packaging equipment according to claim 2, characterized in that: The bag bottom sealing and shearing device (18) comprises a sealing device and a shearing device, and a third motor (17) drives a screw rod with threads of different rotation directions at both ends to rotate, thereby driving the upper and lower slide blocks to move linearly, thereby achieving sealing and shearing.

9. The multi-purpose fully automatic lightweight bulk material packaging equipment according to claim 2, characterized in that: A bag holding shell (19) in the form of a semicircular long tubular shell is provided on the left side of the bag bottom sealing and shearing device (18) and is fixedly connected to an upper slider in the bag bottom sealing and shearing device (18). A bag unloading inclined surface (16) is provided on one side of the frame (21) below the bag holding shell (19).

10. The multi-purpose fully automatic lightweight bulk material packaging equipment according to claim 2, characterized in that: The mouth opener (20) comprises an inner membrane supporting membrane body (201), an outer membrane positioning rod (202) and a connecting frame, wherein the connecting frame is fixedly connected to the frame (21), and the inner membrane supporting membrane body (201) is cylindrical or prism-shaped, and has two parallel grooves or annular grooves on the outer side surface at the middle cross-section position perpendicular to the center line of the cylinder, which can be clamped by two rods of the outer membrane positioning rod (202) and will not move randomly along the axial direction.

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