Device for producing degradable plastic straws

Abstract

The present invention discloses a device for producing degradable plastic straws, comprising a straw conduit, a support column, an air pump, a conduit, and a magnetic attraction mechanism. The two ends of the straw conduit are respectively connected to a paper or plastic straw feeding device. The straw conduit is provided with a first discharge port, which is provided with a cover. The support column is provided in the straw conduit and penetrates the paper straw. The magnetic attraction mechanism is installed above the straw conduit. The magnetic attraction device drives the support column to move axially along the straw conduit. The straw delivery conduit is provided with an air inlet ring cavity at both ends. The straw conduit is provided with an air outlet ring cavity at the middle and one end of the first discharge port. The air inlet ring cavity is connected to the air outlet ring cavity through a strip air groove provided on the inner wall of the straw conduit. The air inlet ring cavity is connected to the air pump through the conduit. The straw conduit at the first discharge port and the cover are provided with a heating device. The present invention heats and presses the plastic straw and the paper straw after plugging them together, and supports the paper straw from the inside, thereby improving the firmness of the spliced ​​straw.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic straw production, and in particular to a device for producing degradable plastic straws. Background Art

[0002] Degradable plastics refer to a type of plastic whose products meet various performance requirements, maintain performance during the shelf life, and degrade into environmentally friendly substances under natural environmental conditions after use. However, due to the high cost of degradable plastics, the cost of making a straw using degradable plastics is about 5 cents. Therefore, the existing technology uses a solution that combines plastic straws and paper straws to reduce the production cost of straws. When splicing plastic straws and paper straws together, the existing technology directly heats and softens the plastic straws before plugging them in. However, the softened plastic straws are easily deformed when plugged in, resulting in a loose splicing. Summary of the Invention

[0003] In response to the above-mentioned prior art, the present invention provides a device for producing degradable plastic straws, which connects plastic straws and paper straws and then heats and presses them tightly, and supports the paper straws from the inside, thereby improving the firmness of the assembled straws.

[0004] The technical solution of the present invention is achieved as follows:

[0005] A device for producing degradable plastic straws, comprising a straw conduit, a support column, an air pump, a conduit and a magnetic mechanism, wherein the two ends of the straw conduit are respectively connected to a paper straw feeding device and a plastic straw feeding device, a first discharge port is provided in the middle of the bottom surface of the straw conduit, and a cover that can be opened and closed is provided on the first discharge port, the support column is provided in the straw conduit and passed through the paper straw, the magnetic mechanism is installed above the straw conduit, the magnetic device is used to adsorb the support column and drive the support column to move axially along the straw conduit, air inlet ring cavities are provided at both ends of the straw conveying conduit, and air outlet ring cavities are provided at the middle and one end of the first discharge port of the straw conduit, the air inlet ring cavity is connected to the air outlet ring cavity through a strip air groove provided on the inner wall of the straw conduit, the air inlet ring cavity is connected to the air pump through a conduit, and the straw conduit and the cover at the first discharge port are provided with a heating device.

[0006] Furthermore, it also includes a support platform, the straw catheter is installed on the support platform, the support platform is provided with a mounting seat, the mounting seat is connected to a first electric telescopic rod, the first electric telescopic rod is connected to the lid, and the first electric telescopic rod drives the lid to close and open the first discharge port when it is extended or retracted.

[0007] Furthermore, the heating device includes a heating wire arranged in the cover and the straw conduit.

[0008] Furthermore, cutting knives are provided on both sides of the cover.

[0009] Furthermore, the magnetic attraction device includes a second electric telescopic rod and a first magnet, the first magnet and the support column attract each other, the first magnet is installed on the second electric telescopic rod, and the second electric telescopic rod drives the first magnet to move along the axial direction of the straw catheter.

[0010] Furthermore, the straw conveying part includes a paper straw conveying part and a plastic straw conveying part, and the junction of the paper straw conveying part and the plastic straw conveying part is located at the first discharge port. The inner diameter of the paper straw conveying part is smaller than the inner diameter of the plastic straw and larger than the outer diameter of the paper straw, and the inner diameter of the plastic straw conveying part is larger than the inner diameter of the plastic straw.

[0011] Furthermore, the support column includes a column, an inner shaft, a sleeve, a movable ring, a second magnet and a cylindrical flexible bag. The outer diameters of the column, the sleeve and the flexible bag are the same. The column is connected to the inner shaft, the inner shaft is threadedly connected to the sleeve, the flexible bag is sleeved on the inner shaft, the movable ring is located between the flexible bag and the sleeve, the second magnet is located in an eccentric position of the sleeve, the second electric telescopic rod is provided with a ring, and several of the first magnets are arranged along the circumferential direction of the ring. The first magnet is an electromagnet, and the first magnet is connected to the controller signal. The controller controls the first magnet to be energized in sequence along the circumferential direction.

[0012] Furthermore, it includes a first box body and a second box body, the first box body is used to place cut plastic straws, and the second box body is used to place cut paper straws. The lower ends of the first box body and the second box body are provided with second discharge ports, and the two second discharge ports are connected through the straw duct.

[0013] The beneficial effects of the present invention are as follows: the first discharge port is covered by a lid, and the heating device is turned on to heat the plastic to soften it. When the softened plastic straw receives the squeezing force of the lid, it deforms and clamps the paper straw, thereby completing the splicing of the paper straw and the plastic straw. In the process of splicing the paper straw and the plastic straw, since the support column is passed through the paper straw, the paper straw can be supported from the inside. When the lid presses the straw, the shape of the straw can be kept stable, and deformation during the straw squeezing process can be avoided, thereby ensuring that the shape of the straw is complete and the splicing is firm after the production is completed. After the splicing is completed, the magnetic device is used to drive the support column to move along the straw guide tube, so that the support column is separated from the position of the first discharge port. After the limiting effect of the support column is lost, the spliced ​​straw is discharged from the first discharge port. The present invention can splice paper straws and plastic straws together and can operate continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a schematic structural diagram of a device for producing degradable plastic straws according to the present invention;

[0016] Figure 2 is a schematic cross-sectional view of a suction tube catheter of the present invention;

[0017] Figure 3 This is a schematic structural diagram of a device for producing degradable plastic straws according to the present invention;

[0018] In the figure, 1 is the straw guide tube, 2 is the support column, 3 is the air pump, 4 is the guide tube, 5 is the magnetic suction mechanism, 6 is the first discharge port, 7 is the lid, 8 is the air inlet ring cavity, 9 is the air outlet ring cavity, 10 is the strip air groove, 11 is the electric heating wire, 12 is the support platform, 13 is the mounting seat, 14 is the first electric telescopic rod, 15 is the cutting knife, 16 is the second electric telescopic rod, 17 is the first magnet, 18 is the paper straw conveying part, 19 is the plastic straw conveying part, 20 is the column, 21 is the inner shaft, 22 is the sleeve, 23 is the movable ring, 24 is the second magnet, 25 is the flexible bag, 26 is the ring, 27 is the first box body, 28 is the second box body, 29 is the second discharge port. DETAILED DESCRIPTION

[0019] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0020] Example 1

[0021] See also Figures 1 and 2A device for producing degradable plastic straws includes a straw conduit 1, a support column 2, an air pump 3, a conduit 4 and a magnetic attraction mechanism 5. The two ends of the straw conduit 1 are respectively connected to a paper straw feeding device and a plastic straw feeding device. A first discharge port 6 is provided in the middle of the bottom surface of the straw conduit 1. The first discharge port 6 is provided with an openable and closable cover 7. The support column 2 is provided in the straw conduit 1 and passes through the paper straw. The magnetic attraction mechanism 5 is installed above the straw conduit 1. The magnetic attraction device is used to The support column 2 is adsorbed and driven to move axially along the straw conduit 1. An air inlet ring cavity 8 is provided at both ends of the straw delivery conduit 4. An air outlet ring cavity 9 is provided at the middle and one end of the first discharge port 6 of the straw conduit 1. The air inlet ring cavity 8 is connected to the air outlet ring cavity 9 through a strip air groove 10 provided on the inner wall of the straw conduit 1. The air inlet ring cavity 8 is connected to the air pump 3 through the conduit 4. The straw conduit 1 and the cover 7 at the first discharge port 6 are provided with a heating device.

[0022] The straw conduit 1 of the present invention is connected at both ends to a paper straw feeding device and a plastic straw feeding device, respectively. For example, it can be connected to a robot, which inserts paper straws and plastic straws into the ends of the conduit 4 through the robot, or it can be connected to a straw segmenting machine through a pipeline, so that the segmented straws are directly transported along the pipeline into the straw conduit 1. The straw delivery conduit 4 is provided with an air intake annular cavity 8 at both ends. The air intake annular cavity 8 is connected to the air pump 3 through the conduit 4. When the air pump 3 is in operation, it pumps gas into the air intake annular cavity 8. The gas flows along the strip-shaped air groove 10, pushing the straws toward the center of the straw conduit 1. Two air outlet annular cavities 9 are located in the middle of the first outlet 6 and at one end of the first outlet 6 near the paper straw feeding device. The air outlet annular cavity 9 located in the middle of the first outlet 6 communicates with the air inlet annular cavity 8 located near the plastic straw feeding device via a strip air groove 10. Similarly, the air outlet annular cavity 9 located at one end of the first outlet near the paper straw feeding device communicates with the air inlet annular cavity 8 located near the paper straw feeding device via a strip air groove 10. Once the paper straw reaches the first outlet 6, the gas flowing through the strip air groove 10 no longer contacts the paper straw, thus stopping its propulsion. The plastic straw, propelled by the gas, moves toward the paper straw, encasing it, with a portion of the paper straw inserted into the plastic straw. A lid 7 covers the first outlet 6, and a heating device is activated to heat and soften the plastic. The softened plastic straw deforms under the pressure of the lid 7, clamping the paper straw, thereby completing the splicing of the paper and plastic straws. During the splicing process of paper straws and plastic straws, since the support column 2 is inserted into the paper straw, the paper straw can be inserted from the internal support column 2. When the lid 7 presses the straw, the shape of the straw can be kept stable, avoiding deformation during the straw extrusion process, thereby ensuring that the straw has a complete shape and is firmly spliced ​​after production. After the splicing is completed, the magnetic device is used to drive the support column 2 to move along the straw guide tube 1, so that the support column 2 is separated from the position of the first discharge port 6. After the limiting effect of the support column 2 is lost, the spliced ​​straw is discharged from the first discharge port 6. The present invention can splice paper straws and plastic straws together and can operate continuously. After the plastic straws at the position of the strip groove are squeezed, micro ribs are formed, which improves the strength of the straw.

[0023] Specifically, the device further includes a support platform 12, upon which the straw conduit 1 is mounted. The support platform 12 is provided with a mounting base 13, to which a first electric telescopic rod 14 is connected. The first electric telescopic rod 14 is connected to the lid 7, and when the first electric telescopic rod 14 is extended or retracted, it drives the lid 7 to close and open the first discharge port 6. The support platform 12 provides both support and fixation. The mounting base 13 and the first electric telescopic rod 14 are provided on the support platform 12. When the first electric telescopic rod 14 is extended, it pushes the lid 7 to close the first discharge port 6 and squeezes the straws to securely join them. When the first electric telescopic rod 14 is retracted, it pulls the lid 7 to open the first discharge port 6, allowing the joined straws to fall out of the straw conduit 1.

[0024] Specifically, the heating device includes a heating wire 11 provided in the cover 7 and the straw conduit 1. When the heating wire 11 is energized, it generates heat to heat the plastic straw.

[0025] Specifically, cutting blades 15 are provided on both sides of the cover 7. Paper straws and plastic straws can be cut twice to produce straws of appropriate length.

[0026] Specifically, the magnetic attraction device includes a second electric telescopic rod 16 and a first magnet 17. The first magnet 17 and the support column 2 attract each other. The first magnet 17 is mounted on the second electric telescopic rod 16. The second electric telescopic rod 16 drives the first magnet 17 to move axially along the straw guide tube 1. When the second electric telescopic rod 16 is extended or retracted, it drives the first magnet 17 to move axially, and the first magnet 17 attracts the support column 2 to move axially.

[0027] Specifically, the straw guide tube 1 includes a paper straw conveying portion 18 and a plastic straw conveying portion 19. The junction of the paper straw conveying portion 18 and the plastic straw conveying portion 19 is located at the first discharge port 6. The inner diameter of the paper straw conveying portion 18 is smaller than the inner diameter of the plastic straw and larger than the outer diameter of the paper straw. The inner diameter of the plastic straw conveying portion 19 is larger than the inner diameter of the plastic straw. The paper straw stops moving when the air outlet ring cavity 9 is exposed. The plastic straw gets stuck when it moves to the junction driven by the gas, thereby controlling the moving distance of the paper straw and the plastic straw. The inner diameter of the paper straw conveying portion 18 is smaller than the inner diameter of the plastic straw and larger than the outer diameter of the paper straw. The inner diameter of the plastic straw conveying portion 19 is larger than the inner diameter of the plastic straw. After the paper straw moves through the junction, there is a moving gap between the paper straw and the plastic straw conveying portion 19, and the plastic straw can be easily plugged into the paper straw.

[0028] Example 2

[0029] See also Figure 3The difference between this embodiment and embodiment 1 is that the support column 2 includes a column 20, an inner shaft 21, a sleeve 22, a movable ring 23, a second magnet 24 and a cylindrical flexible capsule 25. The outer diameters of the column 20, sleeve 22 and flexible capsule 25 are the same. The column 20 is connected to the inner shaft 21, which is threadedly connected to the sleeve 22. The flexible capsule 25 is sleeved on the inner shaft 21. The movable ring 23 is located between the flexible capsule 25 and the sleeve. The second magnet 24 is located at an eccentric position of the sleeve 22. The second electric telescopic rod 16 is provided with a ring 26. Several first magnets 17 are arranged along the circumferential direction of the ring 26. The first magnets 17 are electromagnets. The first magnets 17 are connected to the controller signal. The controller controls the first magnets 17 to be energized sequentially along the circumferential direction. In the natural state, the outer diameters of the column 20, sleeve 22 and flexible capsule 25 are the same, which facilitates the movement of the support column 2 in the inner cavity of the paper straw. The cylinder 20 is connected to the inner shaft 21, and the inner shaft 21 is threadedly connected to the sleeve 22. By rotating the sleeve 22, the movable ring 23 can be pushed to move, thereby squeezing and loosening the flexible capsule 25. The outer diameter of the flexible capsule 25 increases after being squeezed by the outside world, thereby filling the inner cavity of the paper straw. The present invention arranges a circular ring 26 and arranges the first magnet 17 along the circumferential direction of the circular ring 26. The controller controls the first magnet 17 to be energized in sequence along the circumferential direction to generate a rotating magnetic field, thereby driving the second magnet 24 and the sleeve 22 to rotate, squeezing and loosening the flexible capsule 25. The flexible capsule 25 is filled with liquid. After being squeezed, the flexible capsule 25 supports and clamps the paper straw from the inside, which can prevent the paper straw from deformation and clamp the paper straw. Therefore, the support rod can also be used to transport the paper straw to a designated position.

[0030] Example 2

[0031] See also Figure 3 The difference between this embodiment and Example 1 is that it further includes a first box body 27 and a second box body 28. The first box body 27 is used to place cut plastic straws, and the second box body 28 is used to place cut paper straws. The lower ends of the first box body 27 and the second box body 28 are provided with a second discharge port 29, and the two second discharge ports 29 are connected through the straw guide tube 1.

[0032] Plastic straws are placed in the first box 27, and paper straws are placed in the second box 28. The first box 27 serves as a plastic straw feeder, and the second box 28 serves as a paper straw feeder. Second discharge ports 29 are provided at the lower ends of the first and second boxes 27, 28, respectively. The two first discharge ports 6 communicate with the straw conduit 1. Each first discharge port 6 can only accommodate one straw, and the diameter of the straw conduit 1 is designed to accommodate only one straw. This allows the straws to fall into the conduit 1 in an orderly manner and be arranged axially within the conduit 1.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for producing degradable plastic straws, characterized in that: It includes a straw guide tube, a support column, an air pump, a guide tube and a magnetic suction mechanism, wherein both ends of the straw guide tube are respectively connected to the paper straw feeding device and the plastic straw feeding device, a first discharge port is provided in the middle of the bottom surface of the straw guide tube, and a lid that can be opened and closed is provided on the first discharge port. The support column is provided in the straw guide tube and passed through the paper straw. The magnetic suction mechanism is installed above the straw guide tube. The magnetic suction mechanism is used to adsorb the support column and drive the support column to move axially along the straw guide tube. Both ends of the straw conveying guide tube are provided with air inlet ring cavities, and the straw guide tube is provided with air outlet ring cavities at the middle and one end of the first discharge port. The air inlet ring cavity is connected to the air outlet ring cavity through a strip air groove provided on the inner wall of the straw guide tube, and the air inlet ring cavity is connected to the air pump through a guide tube. The straw guide tube and the lid at the first discharge port are provided with a heating device; the magnetic suction mechanism includes a second electric telescopic rod and a first magnet, the first magnet and the support column attract each other, and the first magnet is installed on the second electric telescopic rod. The second electric telescopic rod drives the first magnet to move along the axial direction of the straw guide tube; the straw guide tube includes a paper straw conveying part and a plastic straw conveying part, and the junction of the paper straw conveying part and the plastic straw conveying part is located at the first discharge port. The inner diameter of the paper straw conveying part is smaller than the inner diameter of the plastic straw, and larger than the outer diameter of the paper straw, and the inner diameter of the plastic straw conveying part is larger than the inner diameter of the plastic straw; the support column includes a column, an inner shaft, a sleeve, a movable ring, a second magnet and a cylindrical flexible bag. The outer diameters of the column, sleeve and flexible bag are the same. The column is connected to the inner shaft, the inner shaft is threadedly connected to the sleeve, and the flexible bag is sleeved on the inner shaft. The movable ring is located between the flexible bag and the sleeve. The second magnet is located in an eccentric position of the sleeve. The second electric telescopic rod is provided with a circular ring. Several first magnets are arranged along the circumferential direction of the circular ring. The first magnet is an electromagnet. The first magnet is connected to the controller signal. The controller controls the first magnets to be energized in sequence along the circumferential direction.

2. The device for producing degradable plastic straws according to claim 1, characterized in that: It also includes a support platform, the straw catheter is installed on the support platform, the support platform is provided with a mounting seat, the mounting seat is connected to a first electric telescopic rod, the first electric telescopic rod is connected to the lid, and the first electric telescopic rod drives the lid to close and open the first discharge port when it is extended or retracted.

3. The device for producing degradable plastic straws according to claim 1, characterized in that: The heating device includes an electric heating wire arranged in the cover and the straw conduit.

4. The device for producing degradable plastic straws according to claim 2, characterized in that: Cutting knives are provided on both sides of the cover.

5. The device for producing degradable plastic straws according to claim 1, characterized in that: It also includes a first box body and a second box body, the first box body is used to place cut plastic straws, and the second box body is used to place cut paper straws. The lower ends of the first box body and the second box body are provided with second discharge ports, and the two second discharge ports are connected through the straw duct.

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