Automatic dust removing and tightening device for powder bag opening

Abstract

The invention discloses an automatic dust removing and tightening device for a powder bag opening. The automatic dust removing and tightening device is provided with a supporting frame, a conical discharging opening, a hydraulic assembly and a clamping component or is provided with a material bag positioning seat. The central axis of the conical discharging port is vertically fixed to the middle of the supporting frame, and the conical discharging port is used for being connected with an inner bag in a sleeved mode. The hydraulic assemblies are symmetrically installed on the supporting frame on the two sides of the conical discharging opening, the lower ends of hydraulic pistons are connected with the clamping parts, and the clamping parts can be driven to tighten the inner bag opening connected to the conical discharging opening in a sleeving mode; the material bag positioning seat is arranged below the supporting frame and used for positioning and supporting the double-layer outer bag. According to the device, integrated operation of inner bag set loading, dust removal and outer bag tightening can be achieved, the automation degree is high, the labor cost can be reduced, the sealing effect is good, and the packaging quality is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of packaging automation, in particular to a dust removal and tightening integrated device for a powder bag opening. BACKGROUND

[0002] Bag opening tightening equipment is an important tool in the packaging industry, widely used in agriculture, food, chemical industry and other fields. Its core advantage is to improve efficiency, reduce labor cost and ensure sealing quality. It mainly realizes efficient sealing through the following three working principles: 1. Cylinder drive and hot melt glue sealing technology: take the mushroom bag automatic opening machine as an example. The equipment drives the needle to penetrate the bag opening through the cylinder, synchronously sprays hot melt glue to complete sealing instantly, ensures the sterile environment and reduces the pollution risk.

[0003] 2. Mechanical imitation of manual operation: the bagging and opening integrated machine uses a mechanical hand to simulate human hand movements, automatically completes the opening, feeding process, and realizes the integration of bagging and opening with the computer program control system, supports touch screen operation and parameter adjustment (such as bagging opening tightness, feeding speed).

[0004] 3. Aluminum nail / buckle fastening technology: some equipment uses U-shaped aluminum nails or buckles to seal the bag opening with single layer through the pressure of the rolling head, replacing the traditional double-layer folded tape method, reducing material loss.

[0005] In the existing 500T powder bagging operation of the applicant's enterprise, the rope buckle binding method is used to connect the dust removal and ash discharge opening. Not only is the dust leakage large, but also a large amount of manual operation is required, which cannot meet the "cost reduction, quality improvement and efficiency increase" demand of large-scale production, and the connection method of the bag opening and the dust removal and ash discharge opening needs to be improved.

[0006] The purpose of the application is to provide a device that can automatically tighten the bag opening after the packaging bag is filled with material. When the packaging bag filled with material is sent to the lifting and rotating conveying table of the automatic bag opening tightening device, the automatic bag opening tightening work of the packaging bag is realized through the actions of closing, lifting, wrapping and tightening, cutting off the belt strip and returning. The invention cannot remove dust, and there may be dust leakage during the bag opening tightening process. SUMMARY

[0007] Invention purposes: To solve the problems of large dust leakage, high labor dependence and low efficiency in the existing powder bag opening binding process, provide a powder bag opening automatic dust removal and tightening device with high automation, good sealing effect and "dust removal and tightening" integration, reduce labor cost and improve packaging quality.

[0008] Technical scheme: The automatic dust removal and bagging device of the powder bag mouth of the present application: composed of a support frame, a conical discharge port, a hydraulic assembly, a clamping component, a hydraulic control system, used for dust removal and bagging of double-layer bags.

[0009] The structure and connection relationship of each component are as follows: Support frame: as the main support structure of the device, made of metal material, with high stability, providing installation reference for other components.

[0010] Conical discharge port: conical structure, upper end diameter larger than lower end diameter. Machined or injection molded, inner side polished to reduce material residue, fixed in the middle of the support frame, symmetric axis perpendicular to the horizontal plane of the support frame, used for inserting the inner bag mouth to form a material conveying channel.

[0011] Hydraulic assembly: including hydraulic cylinder and hydraulic piston, two groups and symmetrically installed on both sides of the conical discharge port of the support frame, through hydraulic drive to realize telescopic action, the execution end (hydraulic piston, telescopic end) for connecting the following clamping component.

[0012] Clamping component: circular ring shape, both sides have one screw hole connected with the hydraulic piston (the outer periphery can be circular or elliptical, elliptical is more convenient to connect with two hydraulic pistons, and an elliptical long axis is provided with one screw hole on both sides of the inner side), with a circular socket hole in the center for socket with the conical discharge port. The diameter of the socket hole is larger than the lower end diameter of the conical discharge port and smaller than the upper end diameter of the conical discharge port.

[0013] Preferably, the inner side of the socket hole is attached with a silica gel anti-slip layer to enhance the clamping stability and avoid damaging the inner bag.

[0014] The clamping component is detachably connected with the telescopic end of the hydraulic piston through the outer periphery connecting screw, moves to the conical discharge port direction under the drive of the hydraulic assembly, realizes the clamping and loosening of the inner bag mouth.

[0015] Hydraulic control system: connected on one side of the support frame, connected with the hydraulic cylinder of the hydraulic assembly through high-pressure oil-resistant hose, and has a control circuit for controlling the pressure of the hydraulic oil in the oil-resistant hose, thereby controlling the telescopic of the hydraulic piston, realizing the lifting clamping and descending reset of the clamping component.

[0016] Double-layer bag positioning seat: set below the support frame corresponding to the position directly below the conical discharge port, used for positioning and supporting double-layer bags, ensuring the accurate butt joint of the inner bag with the inner bag discharge port.

[0017] Auxiliary component: the conical discharge port above the hopper below can also be connected with a dust collector, used for adsorbing the dust scattered in the conical discharge port or the inner bag during the loading and bagging process, further optimizing the dust removal effect.

[0018] Double-layer bag structure: The double-layer bag structure comprises an inner bag and an outer bag. The inner bag is used to directly contact the powder, and the bag opening of the inner bag is sleeved with a conical discharge port, which is clamped and fixed by the clamping component. The outer bag is placed on the double-layer bag positioning seat, and the opening is upwardly connected to the lower end of the inner bag to ensure that the inner bag is stably sleeved inside the outer bag, forming a double-layer protection structure of "inner bag sealed conveying-outer bag bearing and tightening".

[0019] The outer bag is used to wrap and protect the inner bag, and the bag opening of the outer bag is provided with a bag opening tightening strap. The outer bag can be additionally provided with a lifting buckle or a lifting belt for convenient lifting. The bag opening of the inner bag is preferably provided with a certain rigid hoop, and the outer diameter of the hoop when unfolded forms a circular ring, which is greater than the diameter of the sleeving hole of the clamping component and less than the diameter of the upper end of the conical discharge port. The clamping component can drive the inner bag to move upwards outside the conical discharge port, further preventing the inner bag from slipping and leaking dust.

[0020] Operation steps: Step (I): Place the double-layer bag on the double-layer bag positioning seat, and the opening is upwardly connected to the lower end of the inner bag. The operator or the mechanical hand holds the inner bag and slowly sleeves it outside the conical discharge port, adjusts the position along the circumference of the inner bag, and ensures that the inner bag is in close contact with the lower end of the conical discharge port to form a channel.

[0021] Step (II): Through the operation of the hydraulic control system, start the hydraulic assembly, drive the hydraulic piston to move towards the center of the conical discharge port, until the circular clamping component completely presses the bag opening of the inner bag, and the inner bag is in a closed state. Turn off the hydraulic switch to lock the position.

[0022] Step (III): Turn on the discharge switch of the powder production equipment to control the material flow rate. The material falls from the hopper until the double-layer bag is inflated to the preset filling amount (such as 25 kg / bag), and then the discharge switch is turned off.

[0023] Step (IV): Control the hydraulic piston to reset through the hydraulic control system, and loosen the clamping component of the inner bag. The operator holds the outer bag after being tied together with both hands. The inner bag is gathered when it is completed to seal, which is convenient for tightening the bag opening of the inner bag. The bag opening of the outer bag is tightened using a strap, a U-shaped aluminum nail, or a buckle. The two bag openings are respectively tightened, and the sealing effect is good.

[0024] Step (V): Slowly lift and transport away from the double-layer bag positioning seat to complete a single packaging operation.

[0025] Beneficial effects: Efficiency improvement: The integrated equipment realizes "dust removal-tightening" continuous operation, and the tightening efficiency can reach 80-100 bags / hour. The single machine can increase the processing capacity of 3-5 tons of powder per shift, which greatly improves the production efficiency compared with the traditional manual operation.

[0026] Labor savings: Only simple operations such as feeding and bagging are required by human labor, replacing the repetitive labor of tightening the cable ties manually. A single machine can save 2 workers, reducing labor costs and management difficulty.

[0027] Safety protection: It avoids skin damage to fingers caused by prolonged manual force, and reduces dust leakage through inner bag clamping and sealing and vacuum cleaner assistance, thereby improving the working environment and protecting the health of operators.

[0028] Packaging quality optimization: Hydraulic power drives the clamping components to ensure uniform clamping force on the inner bag and consistent tightness of the outer bag closure, reducing packaging damage and air leakage caused by manual operation and improving the sealing reliability of powder packaging.

[0029] Highly adaptable: The outer bag positioning seat is adjustable, and the hydraulic control system supports parameter adjustment, making it suitable for packaging needs of different specifications of powders. It can be widely used in large-scale operations in agriculture, food, chemical and other fields. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural schematic diagram of the automatic dust removal and sealing device for powder bag openings of the present invention; Figure 2 yes Figure 1 A three-dimensional schematic diagram of part of the hydraulic assembly and clamping components; Figure 3 This is a schematic diagram of a clamping component; Figure 4 This is a structural diagram of an inner bag.

[0031] In the diagram, 1-support frame; 2-conical discharge port; 3-hydraulic components (31-hydraulic cylinder; 32-hydraulic piston); 4-circular clamping component; 5-hydraulic control system; 6-outer bag opening; 7-inner bag opening; 8-outer bag tie; 9-vacuum cleaner; 10-sleeving hole; 11-screw hole; 12-anti-slip layer; 13-inner bag; 14-bag opening reinforcement; 15-inner bag tie. Detailed Implementation

[0032] Example 1: like Figure 2 The automatic dust removal and sealing device for powder bags shown is used for dust removal and sealing of bag openings when filling double-layer bags. The double-layer bag consists of an outer bag and an inner bag 13 fitted inside the outer bag. It has a support frame 1, a conical discharge port 2, a hydraulic component 3, and a hydraulic control system 5. The conical discharge port 2 is fixed in the middle of the support frame 1, and the hydraulic component 3 is fixed on the outside of the support frame 1. The features are as follows: the conical discharge port 2 is in the shape of a flared mouth with a larger diameter at the upper end than at the lower end, which can fit the bag opening 7 of the inner bag; a set of hydraulic components 3 is installed on each side of the support frame 1, and each set of hydraulic components 3 includes a hydraulic cylinder 31 and a hydraulic piston 32. The upper end of the hydraulic cylinder 31 is fixedly connected to the support frame 1, and the hydraulic piston 32 moves vertically downwards to extend and retract. There is also a ring-shaped clamping component 4. Each of the left and right ends of the clamping component 4 has a screw hole 11, which is movably connected to the telescopic end of a hydraulic piston 32. The center of the clamping component 4 has a circular socket hole 10. The outer periphery of the clamping component 4 is ring-shaped.

[0033] The diameter of the connecting hole 10 is larger than the lower diameter of the conical discharge port 2 and smaller than the upper diameter of the conical discharge port 2, so that it can be connected to the conical discharge port 2. The hydraulic control system 5 is connected to the hydraulic component 3 through hydraulic pipelines and control lines, and is used to control the extension and retraction of the hydraulic piston 32, so that the clamping component 4 moves up and down along the outer wall of the conical discharge port 2 to clamp or release the inner bag opening 7.

[0034] A dust collector 9 is connected above the conical discharge 2 and below the hopper to help remove dust leaking from the inner bag opening 7 during the loading and outer bag opening 6 process.

[0035] Device assembly steps: Step (1): The support frame 1 is made of aluminum alloy profile, which is cut and welded and then anodized. The conical discharge port 2 is injection molded and polished on the inside. The clamping component 4 is a ring structure with a silicone anti-slip layer 12 attached to the clamping surface. The hydraulic component 3 is a standard hydraulic cylinder 31 and a hydraulic piston 32. The hydraulic control system 5 is a hydraulic control cabinet with touch screen operation.

[0036] Step (2): Fix the conical discharge port 2 to the preset mounting hole in the middle of the support frame 1 with bolts, and use a level to calibrate it to ensure that its axis is perpendicular to the horizontal plane of the support frame 1, with a deviation of no more than 0.5°.

[0037] Step (3): Fix the two sets of hydraulic components 3 symmetrically on the crossbeams of the support frame 1 on both sides of the conical discharge port 2, with the spacing matching the conical discharge port 2; connect the ring clamping component 4 to the telescopic end of the hydraulic piston 32 with bolts to ensure a firm connection.

[0038] Step (4): Fix the hydraulic control system 5 to the right column of the support frame 1 with bolts, connect the hydraulic control cabinet to the two sets of hydraulic cylinders 31 using high-pressure oil-resistant hoses, and complete the wiring of the control lines.

[0039] Step (5): Power on the hydraulic control system 5, test the extension and retraction stroke of the hydraulic piston 32, and ensure that the clamping component 4 can completely fit the inner bag 13 on the outside of the conical discharge port 2 to complete the assembly.

[0040] Actual usage steps: Step (1): Place the double-layer bag on the double-layer bag positioning seat with the opening facing upwards and align it with the lower end of the inner bag 13; the operator or robot arm holds the inner bag 13 and slowly places it on the outside of the conical discharge port 2, adjusting its position around the inner bag 13 to ensure that there is no gap between the inner bag 13 and the lower end of the conical discharge port 2, forming a sealed channel.

[0041] Step (2): By operating the hydraulic control system 5, start the hydraulic component 3 and drive the hydraulic piston 32 to move towards the center of the conical discharge port 2 until the circular clamping component 4 completely presses the inner bag opening 7, the inner bag 13 is in a closed state, and the hydraulic switch is turned off to lock the position.

[0042] Step (3): Turn on the discharge switch of the powder production equipment, control the material flow rate until the double-layer bag inflates to the preset filling amount (e.g., 25kg / bag), then turn off the discharge switch.

[0043] Step (4): The hydraulic piston 32 is reset by the hydraulic control system 5, and the clamping component 4 releases the inner bag 13; the operator holds the tied yellow outer bag with both hands, and the inner bag 13 completes the sealing and simultaneously gathers the bag opening 6 of the outer bag. The bag opening is sealed by the pressure of the clamping head using U-shaped aluminum nails or buckles.

[0044] Step (5): Slowly remove the sealed bag from the clamping component of the double-layer bag positioning seat to complete a single packaging operation.

[0045] Example 2: like Figure 2 The automatic dust removal and sealing device for powder bags shown is used for dust removal and sealing of bag openings when filling double-layer bags. The double-layer bag consists of an outer bag and an inner bag 13 fitted inside the outer bag. It has a support frame 1, a conical discharge port 2, a hydraulic component 3, and a hydraulic control system 5. The conical discharge port 2 is fixed in the middle of the support frame 1, and the hydraulic component 3 is fixed on the outside of the support frame 1. The features are as follows: the conical discharge port 2 is in the shape of a flared mouth with a larger diameter at the upper end than at the lower end, which can fit the bag opening 7 of the inner bag; a set of hydraulic components 3 is installed on each side of the support frame 1, and each set of hydraulic components 3 includes a hydraulic cylinder 31 and a hydraulic piston 32. The upper end of the hydraulic cylinder 31 is fixedly connected to the support frame 1, and the hydraulic piston 32 moves vertically downwards to extend and retract. Another ring-shaped clamping component 4 has an outer ring shape and a circular socket 10 in the center. The inner sides of both ends of the elliptical major axis of the clamping component 4 are respectively provided with screw holes 11, which are movably connected to the telescopic ends of a hydraulic piston 32. The socket 10 of the clamping component 4 has a silicone anti-slip layer 12 at its opening.

[0046] The diameter of the connecting hole 10 is larger than the lower diameter of the conical discharge port 2 and smaller than the upper diameter of the conical discharge port 2, so that it can be connected to the conical discharge port 2.

[0047] The hydraulic control system 5 is connected to the hydraulic component 3 through hydraulic pipelines and control lines, and is used to control the extension and retraction of the hydraulic piston 32, so that the clamping component 4 moves up and down along the outer wall of the conical discharge port 2 to clamp or release the inner bag opening 7.

[0048] like Figure 4 The bag opening 7 of the inner bag shown has a hoop 14. When the hoop 14 is unfolded, the outer diameter of the ring formed is larger than the diameter of the socket hole 10 of the clamping component 4 and smaller than the diameter of the upper end of the conical discharge port 2.

Claims

1. An automatic dust removal and sealing device for powder bag opening, used for dust removal and bag opening sealing when filling double-layer material bags, wherein the double-layer material bag consists of an outer bag and an inner bag (13) fitted inside the outer bag; and has a support frame (1), a conical discharge port (2), a hydraulic component (3), and a hydraulic control system (5), wherein the conical discharge port (2) is fixed in the middle of the support frame (1), and the hydraulic component (3) is fixed on the outside of the support frame (1); Its features are: The conical discharge port (2) is shaped like a flared mouth with a larger diameter at the top than at the bottom, and can fit into the bag opening (7) of the inner bag; a set of hydraulic components (3) is installed on each side of the support frame (1). Each set of hydraulic components (3) includes a hydraulic cylinder (31) and a hydraulic piston (32). The upper end of the hydraulic cylinder (31) is fixedly connected to the support frame (1), and the hydraulic piston (32) moves vertically downwards in a telescopic motion. There is also a ring-shaped clamping component (4). The left and right ends of the clamping component (4) each have a screw hole (11) that is movably connected to the telescopic end of a hydraulic piston (32). The clamping component (4) has a circular socket (10) in the center. The diameter of the socket (10) is larger than the lower diameter of the conical discharge port (2) and smaller than the upper diameter of the conical discharge port (2), so that it can be fitted onto the conical discharge port (2). The hydraulic control system (5) is connected to the hydraulic component (3) through hydraulic pipelines and control lines. It is used to control the extension and retraction of the hydraulic piston (32) so that the clamping component (4) moves up and down along the outer wall of the conical discharge port (2) to clamp or release the inner bag opening (7).

2. The automatic dust removal and sealing device for powder bag openings as described in claim 1, characterized in that: The clamping component (4) has a silicone anti-slip layer (12) at the opening of the socket (10).

3. The automatic dust removal and sealing device for powder bag openings as described in claim 1, characterized in that: The clamping component (4) has an elliptical ring shape on its outer periphery, and the screw holes (11) are respectively provided on the inner sides of the two ends of the major axis of the ellipse.

4. The automatic dust removal and sealing device for powder bag openings as described in claim 1, characterized in that: Above the conical discharge port (2) and below the hopper, a dust collector (9) is connected to help the device to remove dust leaking from the inner bag opening (7) during the loading and outer bag opening (6) sealing process.

5. The automatic dust removal and sealing device for powder bag openings as described in claim 1, characterized in that: The inner bag opening (7) has a hoop (14). When the hoop (14) is unfolded, the outer diameter of the ring formed is greater than the diameter of the socket (10) of the clamping component (4) and smaller than the diameter of the upper end of the conical discharge port (2).

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