Automatic unpacking machine for clean chemical powder

Abstract

This invention relates to the field of powder packaging bag unpacking technology, and discloses a clean-type automatic chemical powder unpacking machine, including a stepping lifting platform, an unpacking machine frame, and a six-degree-of-freedom bag-grabbing robot. The unpacking machine frame is equipped with a shell, inside which are a dust removal chamber and an unpacking chamber. The dust removal chamber contains a conveying and dust removal structure, and the unpacking chamber contains an inclined conveying and fixing structure, which includes several telescopic fixing spikes. The unpacking chamber contains a cutting structure and a waste bag roller, with several telescopic claws on the waste bag roller. A spiral conveying device is located at the waste bag roller, and a powder conveying device is located at the outlet of the unpacking chamber. This invention, using the above-described structure, can automatically grab, convey, position, fix, and efficiently unload chemical powder packaging bags, collecting waste bags. The entire unpacking process is completed within the dust removal chamber and the unpacking chamber, preventing powder contamination and avoiding environmental pollution.

Description

Technical Field

[0001] This invention relates to the field of powder packaging bag unpacking technology, and in particular to a clean-type automatic unpacking machine for chemical powders. Background Technology

[0002] Chemical powder packaging bags need to be opened by a bag-opening machine, and the powder inside is then transported away by a conveyor. The packaging bags become waste bags and are collected. An automatic bag-opening machine is a piece of equipment used in industrial production to automatically unpack packaging bags and unload bulk powder, achieving fast and efficient material handling. The automatic bag-opening machine uses a mesh conveyor to feed the packaging bags containing materials into the machine. After entering the machine, the packaging bags are cut open by a high-speed rotating cutting device. As the conveyor belt continues to advance, most of the powder passes through a buffer hopper in the conveyor, while the remaining packaging bags are discharged from the machine through a roller equipped with a screw conveyor for collection.

[0003] Existing unpacking machines still have an open design, causing powder to scatter during the unpacking process. Many chemical powders are toxic or have irritating odors, and must be protected from contamination by other materials during production. Because existing unpacking machines lack adequate dust removal measures, dust can scatter or contaminate the materials, endangering the health and safety of operators, polluting the surrounding environment, and even causing a decline in product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a clean automatic unpacking machine for chemical powders, solving the problem of powder scattering during the unpacking process that causes harm to workers in the aforementioned background art.

[0005] To achieve the above objectives, the present invention provides a clean-type automatic unpacking machine for chemical powders, including a stepping lifting platform, an unpacking machine frame, and a six-degree-of-freedom bag-gripping robot for transferring packaging bags. The six-degree-of-freedom bag-gripping robot is disposed between the stepping lifting platform and the unpacking machine frame. The unpacking machine frame is provided with a shell, and a dust removal chamber and an unpacking chamber are provided inside the shell. The opening of the dust removal chamber is connected to a conveyor belt for conveying packaging bags into the dust removal chamber. A conveying dust removal structure is provided inside the dust removal chamber. An inclined conveying fixing structure is provided inside the unpacking chamber. The conveying fixing structure includes several telescopic fixing spikes. A cutting structure for opening the packaging bags and a waste bag deflector roller are provided inside the unpacking chamber. Several telescopic claws are provided on the waste bag deflector roller. A spiral conveying device for discharging waste bags is provided at the waste bag deflector roller. A powder conveying device is provided at the outlet of the unpacking chamber.

[0006] Preferably, the outer casing is provided with a first dust suction port and a second dust suction port, the first dust suction port being connected to the dust removal chamber and the second dust suction port being connected to the unpacking chamber.

[0007] Preferably, a brush curtain is installed at the opening of the dust removal chamber.

[0008] Preferably, the conveying dust removal structure includes several spaced conveyor belts for conveying packaging bags to the unpacking chamber, with air jets and fixed brushes arranged between the spaced conveyor belts, and air jets and fixed brushes arranged above the spaced conveyor belts.

[0009] Preferably, the conveying and fixing structure includes several inclined spaced conveyor belts 2 for conveying the packaging bags to the waste bag dispensing roller, and several telescopic structures are provided between the spaced conveyor belts 2.

[0010] Preferably, the waste bag roller is provided with several telescopic structures, and the telescopic structures at two intervals of the conveyor belt adopt the same structure as the telescopic structures on the waste bag roller.

[0011] Preferably, the telescopic structure includes a rotating roller with several protruding holes. A telescopic fixing spike or telescopic pawl is slidably disposed in the protruding holes. A fixing block that drives the hole is disposed at the protruding hole. The fixing block is disposed inside the rotating roller. One end of the telescopic fixing spike or telescopic pawl located inside the rotating roller is provided with an end head. A spring is provided on the telescopic fixing spike or telescopic pawl. The spring is disposed between the fixing block and the end head. A cam that contacts the end head is disposed at the center inside the rotating roller.

[0012] Preferably, the waste bag dispensing roller is provided with a number of waste bag dispensing teeth, and fixed cutters are provided at both ends of the waste bag dispensing roller.

[0013] Preferably, the cutting structure includes a rotary movable cutter for cutting open the front end of the packaging bag, and the movable cutter is connected to a lead screw structure for transmission.

[0014] Therefore, the clean chemical powder automatic unpacking machine of the present invention with the above-described structure has the following beneficial effects:

[0015] (1) The present invention uses a stepping lifting platform and a six-degree-of-freedom robotic arm to feed materials without manual operation. It is set with a three-section structure of conveyor belt, dust removal chamber and unpacking chamber to realize the feeding, dust removal and unpacking process. The dust removal and unpacking are completed in the two chambers of dust removal chamber and unpacking chamber, which can avoid the leakage of powder and pollution of the environment and harm to the human body, and at the same time prevent the powder from being contaminated.

[0016] (2) The present invention uses pulsed airflow ejected through a jet pipe and a fixed brush to blow away dust from the outside of the packaging bag, preventing the powder from being contaminated.

[0017] (3) The present invention uses telescopic fixing spikes to position the packaging bag and prevent it from slipping; and uses telescopic claws to achieve efficient bag dispensing and prevent tangling.

[0018] (4) The present invention achieves three-sided bag opening by combining the action of a fixed cutter and a moving cutter, thus preventing powder residue.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a clean chemical powder automatic unpacking machine according to the present invention;

[0021] Figure 2 This is a top view of the conveying and dust removal structure according to an embodiment of the present invention;

[0022] Figure 3 This is a front view of the conveying and fixing structure according to an embodiment of the present invention;

[0023] Figure 4 This is a view perpendicular to the conveying direction of the conveying fixing structure according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the telescopic structure according to an embodiment of the present invention.

[0025] Figure Labels

[0026] 1. Stepping lifting platform; 2. Six-DOF bag-grabbing robot; 3. Outer shell; 4. Conveyor belt; 5. Dust removal chamber; 6. Unpacking chamber; 7. Dust suction port one; 8. Dust suction port two; 9. Brush curtain; 10. Interval conveyor belt one; 11. Air jet pipe; 12. Fixed brush; 13. Interval conveyor belt two; 14. Telescopic fixed spike; 15. Waste bag turning roller; 16. Telescopic claw; 17. Rotating roller; 18. Extension hole; 19. Fixed block; 20. Spring; 21. End; 22. Cam; 23. Waste bag turning tooth; 24. Fixed cutter; 25. Moving cutter; 26. Packaging bag; 27. Screw conveyor; 28. Powder conveying device. Detailed Implementation

[0027] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms "set," "install," and "connect" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Example

[0030] like Figure 1 As shown, the present invention discloses a clean-type automatic chemical powder unpacking machine, comprising a stepping lifting platform 1, an unpacking machine frame, and a six-degree-of-freedom bag-gripping robot 2 for transferring packaging bags 26. The six-degree-of-freedom bag-gripping robot 2 is positioned between the stepping lifting platform 1 and the unpacking machine frame. Both the stepping lifting platform 1 and the six-degree-of-freedom bag-gripping robot 2 adopt existing structures. The stepping lifting platform 1 facilitates the upward transport of the packaging bags 26, while the six-degree-of-freedom bag-gripping robot 2 facilitates the gripping and transport of the packaging bags 26 from the stepping lifting platform 1 to the unpacking machine frame for subsequent unpacking operations.

[0031] The unpacking machine frame is equipped with a housing 3, inside which are a dust removal chamber 5 and an unpacking chamber 6. The opening of the dust removal chamber 5 is connected to a conveyor belt 4 for feeding the packaging bags 26 into the dust removal chamber 5. A brush curtain 9 is installed at the opening of the dust removal chamber 5 to sweep away some of the loose dust on the packaging bags 26. Figure 2As shown, a conveying dust removal structure is provided inside the dust removal chamber 5. This structure includes several spaced conveyor belts 10 for conveying the packaging bags 26 to the unpacking chamber 6. Two rows of air jet pipes 11 are installed between the central spaced conveyor belt 10 and the spaced conveyor belts 10 on either side. Four rows of fixed brushes 12 are installed between the outer spaced conveyor belts 10. When the spaced conveyor belts 10 transport the packaging bags 26, the air jet pipes 11 and fixed brushes 12 are positioned above the packaging bags 26. The positions of the upper air jet pipes 11 and fixed brushes 12 correspond to the positions on the spaced conveyor belts 10, and the upper air jet pipes 11 and fixed brushes 12 are located on the inner wall of the outer casing 3. A suction port 7 is provided on the outer casing 3, communicating with the dust removal chamber 5 and connected to an existing dust collection device. After the packaging bag 26 is conveyed into the dust removal chamber 5 by the conveyor belt 4, the pulse airflow sprayed by the jet pipe 11 and the fixed brush 12 blow away the dust on the outside of the packaging bag 26, and then the dust is sucked out through the dust suction port 7.

[0032] The unpacking chamber 6 is equipped with an inclined conveying and fixing structure. For example... Figure 3 , Figure 4 As shown, the conveying fixed structure includes several inclined, spaced conveyor belts 13, with several telescopic structures between the spaced conveyor belts 13. Several telescopic structures are provided on the waste bag shifting roller 15, and the telescopic structures at the spaced conveyor belts 13 are identical to those on the waste bag shifting roller 15.

[0033] like Figure 5As shown, the telescopic structure includes a rotating roller 17 with several protruding holes 18. Telescopic fixing spikes 14 or telescopic claws 16 are slidably disposed within the protruding holes 18. A fixing block 19, which drives the holes, is located at the protruding hole 18. The telescopic fixing spikes 14 and telescopic claws 16 can pass through the holes in the fixing block 19 and protrude from the protruding holes 18. The fixing block 19 is disposed inside the rotating roller 17. One end of the telescopic fixing spike 14 or telescopic claw 16 located inside the rotating roller 17 has an end head 21. A spring 20 is disposed on the telescopic fixing spike 14 or telescopic claw 16, positioned between the fixing block 19 and the end head 21. A cam 22, which contacts the end head 21, is located at the center of the rotating roller 17. A motor drives the cam 22 to rotate, and the protruding part of the cam 22 pushes the end head 21, thereby pushing the telescopic fixing spike 14 or telescopic claw 16 outward. After the protruding part of the cam 22 rotates past this point, the telescopic fixing spikes 14 or telescopic claws 16, which are pushed outward, automatically retract under the action of the spring 20. After passing through the dust removal chamber 5, the packaging bag 26 is conveyed to the waste bag roller 15 by the inclined interval conveyor belt 13. The waste bag roller 15 is equipped with several waste bag teeth 23 to discharge the waste packaging bag 26. During the process of conveying the packaging bag 26 by the interval conveyor belt 13, the telescopic fixing spikes 14 between the interval conveyor belts 13 extend and insert into the packaging bag 26 to fix the packaging bag 26 to the interval conveyor belt 13 and prevent the packaging bag 26 from moving or slipping. The packaging bag 26 continues to move downward under the drive of the interval conveyor belt 13. When it approaches the waste bag roller 15 on the side, the telescopic claws 16 first hook the upper part of the packaging bag 26. Under the rotation of the waste bag roller 15, the upper part of the packaging bag 26 is wound into the waste bag roller 15 and discharged. The outer casing 3 is equipped with a second suction port 8, which is connected to the unpacking chamber 6 and is connected to an existing dust collection device. A rear door is located at the connection between the dust removal chamber 5 and the unpacking chamber 6. The rear door uses an existing intermittent opening and closing structure. After the packaging bag 26 is dusted, the rear door opens, and the packaging bag 26 is conveyed to the unpacking chamber 6 by the interval conveyor belt 10, where it is connected by the inclined interval conveyor belt 13. Residual dust in the unpacking chamber 6 is sucked out through the second suction port 8.

[0034] The unpacking chamber 6 is equipped with a cutting structure for opening the packaging bag 26. The cutting structure includes a rotary movable cutter 25, which is connected to an existing lead screw structure mounted on the outer casing 3. The lead screw structure includes a motor that drives the lead screw to rotate, thereby moving the cutter holder along the lead screw. The cutter holder is equipped with a cutter motor that drives the movable cutter 25 to rotate. The movable cutter 25 cuts open the front end of the packaging bag 26 while rotating and moving. Fixed cutters 24 are provided at both ends of the waste bag roller 15. The interval conveyor belt 213 is driven by a stepper motor. When the packaging bag 26 moves to the position of the movable cutter 25, it pauses. The movable cutter 25 cuts the front end of the packaging bag 26 along the middle seam of the front end of the packaging bag 26. The movable cutter 25 then moves back to the side, and the interval conveyor belt 213 continues to run. At the same time, the powder begins to flow out. After the movable cutter 25 is pushed to the side, the interval conveyor belt 213 drives the packaging bag 26 to continue moving. The forward-extending fixed cutter 24 inserts into the packaging bag 26 along the cut seam of the movable cutter 25. The width of the blade sides of the fixed cutter 24 gradually increases, cutting open both sides of the packaging bag 26. The fixed cutter 24 is also wider, which can support the upper part of the packaging bag 26, preventing the upper and lower packaging bags 26 from sticking together and affecting the discharge, and guiding the upper packaging bag 26.

[0035] A screw conveyor 27 for discharging waste bags is installed at the waste bag roller 15, and a powder conveying device 28 is installed at the outlet of the unpacking chamber 6. Both the screw conveyor 27 and the powder conveying device 28 adopt existing structures. After the waste bags are carried out by the waste bag roller 15, they are squeezed out of the unpacking machine by the screw conveyor 27 and collected; the powder is conveyed out by the negative pressure powder conveyor below. The unpacking chamber 6 of the entire unpacking machine is a slightly negative pressure environment to prevent dust from overflowing.

[0036] The specific process of using the automatic package unpacking machine in this embodiment is as follows:

[0037] The automatic bag-unpacking machine, in conjunction with the stepping lifting platform 1 and the six-degree-of-freedom bag-grabbing robot 2, achieves automated feeding of entire stacks of bagged powder materials, eliminating the need for manual handling. After the packaging bags 26 are placed on the conveyor belt 4, the conveyor belt 4 transports the packaging bags 26 to the dust removal chamber 5. The dust removal chamber 5 is equipped with a brush curtain 9 at its opening. When the packaging bags 26 enter the dust removal chamber 5 under the action of the conveyor belt 4, some of the floating dust is first swept away by the brush curtain 9. After entering the dust removal chamber 5, the packaging bags 26 are transported to the interval conveyor belt 10. Under the combined action of the pulsed airflow from the jet pipe 11 and the fixed brush 12, the external dust of the packaging bags 26 is blown away and sucked out through the suction port 7.

[0038] The second interval conveyor belt 13 is arranged at a downward angle to reduce the size of the dust collection chamber 5. When the packaging bag 26 enters the second interval conveyor belt 13, the telescopic fixing spur 14 extends under the action of the cam 22 and inserts into the packaging bag 26, fixing the packaging bag 26 to the second interval conveyor belt 13 and preventing the packaging bag 26 from moving or slipping. When the packaging bag 26 moves to the position of the moving cutter 25, it pauses, and the moving cutter 25 cuts open the front end of the packaging bag 26 along the middle seam of the front end of the packaging bag 26. The moving cutter 25 then retracts to the side, and the powder begins to flow out. After the moving cutter 25 is pushed to the side, the second interval conveyor belt 13 continues to move the packaging bag 26, and the forward-extending fixed cutter 24 inserts into the packaging bag 26 along the cut on the packaging bag 26 by the moving cutter 25, cutting open both sides of the packaging bag 26. The packaging bag 26 continues to move downwards under the drive of the interval conveyor belt 13. When it approaches the waste bag deflector roller 15 on the side, the telescopic claw 16 first hooks the upper part of the packaging bag 26. Under the rotation of the waste bag deflector roller 15, the upper part of the packaging bag 26 is rolled into the waste bag deflector roller 15 and discharged. At this time, the packaging bag 26 is cut open on the front, left and right sides to ensure that no powder remains. After the waste bag is carried out by the waste bag deflector roller 15, it should be squeezed out of the unpacking machine by the screw conveyor device 27 and collected. The powder is conveyed out through the powder conveyor device 28 below.

[0039] Therefore, the present invention employs a clean-type automatic chemical powder unpacking machine with the above-described structure, which can automatically grasp, convey, and position chemical powder packaging bags. Then, a fixed cutter and a moving cutter work together to cut open three sides of the packaging bag, achieving efficient unloading and ensuring clean unloading. Finally, the waste bags are automatically collected. The entire unpacking process is completed within two chambers: a dust removal chamber and an unpacking chamber, preventing powder contamination and avoiding environmental pollution.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A clean-type automatic unpacking machine for chemical powders, characterized in that: The system includes a stepping lifting platform, a bag-unpacking machine frame, and a six-degree-of-freedom bag-gripping robot for transferring packaging bags. The six-degree-of-freedom bag-gripping robot is positioned between the stepping lifting platform and the bag-unpacking machine frame. The bag-unpacking machine frame has an outer shell, inside which are a dust removal chamber and a bag-unpacking chamber. The opening of the dust removal chamber is connected to a conveyor belt for conveying packaging bags into the dust removal chamber. The dust removal chamber has a conveying and dust removal structure. The bag-unpacking chamber has an inclined conveying and fixing structure, which includes several telescopic fixing spikes. The bag-unpacking chamber has a cutting structure for opening the packaging bags and a waste bag deflector roller. The waste bag deflector roller has several telescopic claws. A spiral conveyor device for discharging waste bags is installed at the waste bag deflector roller. A powder conveying device is installed at the outlet of the bag-unpacking chamber.

2. The clean-type automatic unpacking machine for chemical powders according to claim 1, characterized in that: The outer casing is equipped with a first suction port and a second suction port. The first suction port is connected to the dust removal chamber, and the second suction port is connected to the unpacking chamber.

3. The clean-type automatic unpacking machine for chemical powders according to claim 1, characterized in that: A brush curtain is installed at the opening of the dust removal chamber.

4. The clean-type automatic unpacking machine for chemical powders according to claim 1, characterized in that: The conveying and dust removal structure includes several spaced conveyor belts for conveying packaging bags to the unpacking chamber. Air jet pipes and fixed brushes are arranged between the spaced conveyor belts, and air jet pipes and fixed brushes are arranged above the spaced conveyor belts.

5. The clean-type automatic unpacking machine for chemical powders according to claim 1, characterized in that: The conveying fixed structure includes several inclined spaced conveyor belts 2 for conveying packaging bags to the waste bag dispensing roller, and several telescopic structures are provided between the spaced conveyor belts 2.

6. The clean-type automatic unpacking machine for chemical powders according to claim 5, characterized in that: The waste bag roller is equipped with several telescopic structures, and the telescopic structures at two intervals on the conveyor belt are the same as those on the waste bag roller.

7. The clean-type automatic unpacking machine for chemical powders according to claim 6, characterized in that: The telescopic structure includes a rotating roller with several protruding holes. A telescopic fixing spike or telescopic pawl is slidably disposed in the protruding holes. A fixing block that drives the hole is disposed at the protruding hole. The fixing block is disposed inside the rotating roller. One end of the telescopic fixing spike or telescopic pawl located inside the rotating roller is provided with an end head. A spring is disposed on the telescopic fixing spike or telescopic pawl. The spring is disposed between the fixing block and the end head. A cam that contacts the end head is disposed at the center inside the rotating roller.

8. The clean-type automatic unpacking machine for chemical powders according to claim 1, characterized in that: The waste bag dispensing roller is equipped with several waste bag dispensing teeth, and fixed cutters are installed at both ends of the waste bag dispensing roller.

9. The clean-type automatic unpacking machine for chemical powders according to claim 1, characterized in that: The cutting structure includes a rotary moving cutter for cutting the front end of the packaging bag, and the moving cutter is connected to a lead screw structure for transmission.

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