A production process for mattress sponge

Abstract

The present invention discloses a production process for mattress sponges, which relates to the field of sponge production technology and includes a cleaning frame, wherein a reflux groove is provided on the inner side of the cleaning frame, and a first positioning plate, a second positioning plate, a water pipe, a water pump, a transmission mechanism, a cleaning mechanism, a first rotating rod, a driving motor, and a first transmission belt are installed on the inner side of the cleaning frame; the cleaning mechanism includes a rack and a fixed rod. By setting a transmission mechanism and a cleaning mechanism, the present invention can make the latex sponge move forward along the first transmission belt, the second transmission belt, the third transmission belt, and the fourth transmission belt, without the need for manual winding, thus reducing the operation steps and improving work efficiency. Moreover, while the transmission mechanism is working, it will also drive the cleaning mechanism to work, knocking and scraping the latex sponge, so that the debris attached to the latex sponge is removed from the pores and outer wall of the latex sponge under the vibration force and scraping, thereby further cleaning the latex sponge.

Description

Technical Field

[0001] The invention relates to the technical field of sponge production, in particular to a production process of sponge for mattresses. Background Art

[0002] Sponge is a porous rubber material with a pore structure consisting of all or most of the pores being connected, and a small number of non-connected pores. It is the type of latex product that consumes the most latex. It has the characteristics of high elasticity, vibration absorption, resistance to compression fatigue, good load-bearing capacity, comfort and durability.

[0003] During the production process, the Dunlop method of producing latex sponge is to deliver all the raw materials into a mixing tank according to the formula, stir them evenly and then enter the latex foaming process. After the foaming is completed, it enters the injection molding process and the surface shaping process. In the surface shaping process, the molded material is shaped in hot air at 80-90°C for 10-15 minutes and then vulcanized with hot air. It is then washed, cooled and cut into shape.

[0004] According to the announcement number: CN112024501B, a latex sponge preparation process is proposed, which includes a base plate, a mounting frame, an extrusion device and a cleaning device. The specific process flow of using the above-mentioned cleaning equipment to prepare latex sponge is as follows: latex vulcanization, molding and demoulding, latex cleaning, centrifugal dehydration and cold air drying. The cleaning device includes a vertical plate, a cleaning water tank, a support frame, a limit frame, an auxiliary rod, a partition and an opening and closing mechanism. The present invention uses a multi-stage cleaning and extrusion method to clean the latex sponge after demolding to remove the residual substances in the sponge that may cause it to turn yellow and discolor. Due to the multi-stage cleaning process, the residual impurities can be effectively reduced, and the cleaning water can flow from left to right, that is, from a position with higher cleanliness to a position with lower cleanliness, so as to realize the multiple use of water and reduce the consumption of water resources.

[0005] The above-mentioned latex sponge preparation process increases the cleaning time of the latex sponge by folding the latex sponge and increasing the time between the latex sponge passing through the cleaning box when in use. Although the debris is separated from the latex sponge body under the action of the cleaning unit, there is a possibility that the debris will adhere to the latex sponge after contacting with water, which makes it inconvenient to fully clean the debris. Therefore, the utility model proposes a production process for mattress sponge. Summary of the Invention

[0006] The purpose of the present invention is to provide a production process for mattress sponge in order to solve the problem that debris adheres to the sponge under the action of water.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a production process for mattress sponge, the specific process flow is as follows:

[0008] S1, latex vulcanization: After injecting foam latex into the mold, the entire mold is placed in a vulcanizer for vulcanization;

[0009] S2, molding and demoulding: after the latex sponge is formed, the mold is removed from the vulcanizer, and the formed latex sponge is removed from the mold;

[0010] S3, latex cleaning: Use the above cleaning equipment to clean the latex sponge to prevent the latex sponge from turning yellow due to residual substances after S treatment;

[0011] S4, centrifugal dehydration: the latex sponge after S treatment is taken out from the equipment and dehydrated by centrifugal drying;

[0012] S5, cold air drying: taking out the latex sponge treated in S and drying it with cold air;

[0013] The equipment used in the step S3 includes a cleaning frame, a reflux groove is opened on the inner side of the cleaning frame, a first positioning plate and a second positioning plate are installed on the inner side of the cleaning frame, the first positioning plate is located on one side of the second positioning plate, and water pipes are installed inside the first positioning plate and the second positioning plate. The bottom end of the water pipe is connected to a water pump, and the water pump is fixedly connected to the inner cavity of the reflux groove through a mounting bracket. The transmission mechanism and the cleaning mechanism are installed inside the second positioning plate and the first positioning plate, and the cleaning mechanism is located inside the transmission mechanism.

[0014] The transmission mechanism includes a first rotating rod rotatably connected to the inside of the first positioning plate, one end of the first rotating rod is connected to the driving motor, and the outer wall of the first rotating rod is sleeved with a first transmission belt;

[0015] The cleaning mechanism includes a rack and a fixing rod. The rack is fixed on the inner side of the first transmission belt, and the fixing rod is fixedly installed in the inner cavity of the first positioning plate.

[0016] As a further solution of the present invention: the transmission mechanism also includes a second transmission belt that is socketed and engaged with the outer wall of the first transmission belt, the second transmission belt is located at one end of the first transmission belt, the inner side of the top end of the first transmission belt is socketed and engaged with the second rotating rod, the outer wall of the other end of the second rotating rod is socketed and engaged with the third transmission belt, the inner wall of the third transmission belt is socketed and engaged with the third rotating rod, the inner side of the other end of the third rotating rod is socketed and engaged with the fourth transmission belt, the inner cavity of the fourth transmission belt is socketed and engaged with the fourth rotating rod, and the inner side of the fourth rotating rod is socketed and engaged with the fifth transmission belt.

[0017] As a further solution of the present invention: the cleaning mechanism also includes a first connecting rod rotatably connected to one end of the fixed rod, the outer wall of the first connecting rod is fixedly connected to the first spur gear and the second spur gear, the second transmission belt and the second spur gear do not contact each other, the bottom outer wall of the second spur gear is meshed with a third spur gear, one end of the third spur gear is fixedly connected to the second connecting rod, the outer wall of the second connecting rod is fixedly connected to the swing rod, and the outer wall of the second connecting rod is sleeved with a torsion spring.

[0018] As a further solution of the present invention: the first rotating rod and the first transmission belt, the second transmission belt, the second rotating rod and the third transmission belt, the third rotating rod and the fourth transmission belt, the third transmission belt, the fourth rotating rod and the fourth transmission belt, the fifth transmission belt are all engaged and sleeved through transmission gears.

[0019] As a further solution of the present invention: the driving motor is electrically connected to an external power supply through a wire, and there are multiple first positioning plates and second positioning plates. The multiple first positioning plates and second positioning plates are evenly distributed on the inner side of the cleaning frame, and the distribution trajectories of the first positioning plates and the second positioning plates form a "Z" shape structure.

[0020] As a further solution of the present invention: the outer wall of the first positioning plate is provided with a first groove matching the lateral movement trajectory of the second transmission belt and the fourth transmission belt, and a second groove matching the vertical movement trajectory of the first transmission belt, the third transmission belt and the fourth rotating rod.

[0021] As a further solution of the present invention: the inner walls of the first positioning plate and the second connecting rod are provided with a slot matching one end of the torsion spring, and the two ends of the torsion spring are respectively clamped in the inner wall slots of the first positioning plate and the second connecting rod.

[0022] As a further solution of the present invention, the outer wall tooth blocks of the second spur gear are evenly distributed on the outer wall of the second spur gear at an angle of 180 degrees, and the outer wall of the rack is meshed with the outer wall of the first spur gear.

[0023] As a further solution of the present invention: the outer wall of the swing rod is in an "L"-shaped structure, there are multiple swing rods, and the multiple swing rods are evenly distributed on the outer wall of the second connecting rod, and the ends of the multiple swing rods are connected by scrapers.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] By setting up a transmission mechanism and a cleaning mechanism, the latex sponge can move forward along the first transmission belt, the second transmission belt, the third transmission belt, and the fourth transmission belt without manual winding, reducing the operation steps and improving work efficiency. While the transmission mechanism is working, it will also drive the cleaning mechanism to work, knocking and scraping the latex sponge, so that the debris attached to the latex sponge is removed from the pores and outer wall of the latex sponge under the vibration force and scraping, thereby further cleaning the latex sponge. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the transmission mechanism of the present invention;

[0028] Figure 3 This is a schematic diagram of the internal structure of the first positioning plate of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the cleaning mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the water pump structure of the present invention.

[0031] In the figure: 1. Cleaning frame; 2. First positioning plate; 3. Second positioning plate; 4. Reflow trough; 5. Transmission mechanism; 501. First rotating rod; 502. Driving motor; 503. First transmission belt; 504. Second transmission belt; 505. Second rotating rod; 506. Third transmission belt; 507. Third rotating rod; 508. Fourth transmission belt; 509. Fourth rotating rod; 510. Fifth transmission belt; 6. Cleaning mechanism; 601. Rack; 602. Fixed rod; 603. First connecting rod; 604. First spur gear; 605. Second spur gear; 606. Third spur gear; 607. Second connecting rod; 608. Swing rod; 609. Torsion spring; 7. Water pump; 8. Water pipe. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1 to 5 In the embodiment of the present invention, a production process of a mattress sponge is provided, and the specific process flow is as follows:

[0034] S1, latex vulcanization: After injecting foam latex into the mold, the entire mold is placed in a vulcanizer for vulcanization;

[0035] S2, molding and demoulding: after the latex sponge is formed, the mold is removed from the vulcanizer, and the formed latex sponge is removed from the mold;

[0036] S3, latex cleaning: Use the above cleaning equipment to clean the latex sponge to prevent the latex sponge from turning yellow due to the residual substances on the latex sponge after S2 treatment;

[0037] S4, centrifugal dehydration: taking the latex sponge treated in S3 out of the equipment and dehydrating it by centrifugal drying;

[0038] S5, cold air drying: taking out the latex sponge treated in S4 and drying it with cold air;

[0039] The equipment used in step S3 includes a cleaning frame 1, a reflux groove 4 is opened on the inner side of the cleaning frame 1, a first positioning plate 2 and a second positioning plate 3 are installed on the inner side of the cleaning frame 1, the first positioning plate 2 is located on one side of the second positioning plate 3, and a water pipe 8 is installed inside the first positioning plate 2 and the second positioning plate 3. The bottom end of the water pipe 8 is connected to a water pump 7, and the water pump 7 is fixedly connected to the inner cavity of the reflux groove 4 through a mounting bracket. A transmission mechanism 5 and a cleaning mechanism 6 are installed inside the second positioning plate 3 and the first positioning plate 2. The cleaning mechanism 6 is located inside the transmission mechanism 5.

[0040] The transmission mechanism 5 includes a first rotating rod 501 rotatably connected to the inside of the first positioning plate 2, one end of the first rotating rod 501 is connected to a driving motor 502, and the outer wall of the first rotating rod 501 is sleeved with a first transmission belt 503;

[0041] The cleaning mechanism 6 includes a rack 601 and a fixing rod 602 . The rack 601 is fixed on the inner side of the first transmission belt 503 , and the fixing rod 602 is fixedly installed in the inner cavity of the first positioning plate 2 .

[0042] In this embodiment: when using this device, by starting the drive motor 502, the drive motor 502 will drive the first rotating rod 501 to rotate, and the first transmission belt 503 and the second transmission belt 504 will transmit the transmission. By placing the end of the demolded latex sponge in the gap between the cleaning frame 1 and the first positioning plate 2, the transmission parts of the transmission mechanism 5 will work, so that the latex sponge will move through the "Z"-shaped positioning groove between the first positioning plate 2 and the second positioning plate 3 until the latex sponge passes through the gap between the other first positioning plate 2 and the cleaning frame 1, thereby completing the cleaning. During this process, the rack 601 will be synchronously transmitted under the action of the first transmission belt 503, and drive the transmission component of the cleaning mechanism 6 to work, so that the vibration component of the cleaning mechanism 6 will work, knocking and scraping the latex sponge, causing the latex sponge to vibrate, so that the internal debris is removed from the gap between the latex sponges, and is gathered and cleaned under the scraping, further increasing the cleaning effect.

[0043] Please refer to Figure 2-4 The transmission mechanism 5 also includes a second transmission belt 504 that is sleeved and meshed with the outer wall of the first transmission belt 503. The second transmission belt 504 is located at one end of the first transmission belt 503. The inner side of the top of the first transmission belt 503 is sleeved and meshed with a second rotating rod 505. The outer wall of the other end of the second rotating rod 505 is sleeved and meshed with a third transmission belt 506. The inner wall of the third transmission belt 506 is sleeved and meshed with a third rotating rod 507. The inner side of the other end of the third rotating rod 507 is sleeved and meshed with a fourth transmission belt 508. The inner cavity of the fourth transmission belt 508 is sleeved and meshed with a fourth rotating rod 509. The fourth rotating rod The inner side of 509 is sleeved and meshed with the fifth transmission belt 510, and the cleaning mechanism 6 also includes a first connecting rod 603 rotatably connected to one end of the fixed rod 602, the outer wall of the first connecting rod 603 is fixedly connected to the first spur gear 604 and the second spur gear 605, the second transmission belt 504 and the second spur gear 605 do not contact each other, the outer wall of the bottom end of the second spur gear 605 is meshed with the third spur gear 606, one end of the third spur gear 606 is fixedly connected to the second connecting rod 607, the outer wall of the second connecting rod 607 is fixedly connected to the swing rod 608, and the outer wall of the second connecting rod 607 is sleeved with a torsion spring 609.

[0044] In this embodiment: by starting the driving motor 502, the driving motor 502 will drive the first rotating rod 501 to rotate, and the first transmission belt 503 and the second transmission belt 504 will be driven. By placing the end of the demoulding completed latex sponge in the gap between the cleaning frame 1 and the first positioning plate 2, the second rotating rod 505, the third transmission belt 506, the third rotating rod 507, the fourth transmission belt 508, the fourth rotating rod 509, and the fifth transmission belt 510 will serve as transmission parts. Under the rotation of the first rotating rod 501, the latex sponge will first contact with the fourth transmission belt 508. The fourth transmission belt 508 will drive the latex sponge to move until the end of the latex sponge contacts the fifth transmission belt 510, and the latex sponge will be offset. Then the bottom end of the latex sponge will contact the second rotating rod 505, and the second rotating rod 505 will continue to drive the latex sponge to move, and so on, contacting the second transmission belt 504, forming a "Z" shape, so that the latex sponge moves automatically for cleaning without manual winding, until the latex sponge moves out through the gap between the other first positioning plate 2 and the cleaning frame 1, thereby completing the cleaning. During this process, the rack 601 will be in the first The transmission belt 503 is used for synchronous transmission. The first connecting rod 603, the first spur gear 604, the second spur gear 605, the third spur gear 606 and the second connecting rod 607 work as a transmission component. The transmission of the rack 601 rotates the first connecting rod 603 at the top and gives the first spur gear 604 a thrust to rotate it. The rotation of the first spur gear 604 drives the first connecting rod 603, the first spur gear 604, the second spur gear 605, the third spur gear 606 and the second connecting rod 607 to rotate. The rotation of the second connecting rod 607 gives tension to the torsion spring 609, thereby driving the vibration The swing rod 608 of the dynamic component swings, and when the second spur gear 605 is no longer in contact with the third spur gear 606, the third spur gear 606 will no longer be subjected to the thrust of the second spur gear 605, so that the second connecting rod 607 is reset under the tension of the torsion spring 609, so that the second connecting rod 607 is in contact with the latex sponge, knocking and scraping the latex sponge, causing the latex sponge to vibrate, so that the internal debris is moved out from the gap between the latex sponges, and is gathered and cleaned under the scraping, further increasing the cleaning effect, until the second spur gear 605 is in contact with the third spur gear 606 again.

[0045] Please refer to Figure 2-3The first rotating rod 501 and the first transmission belt 503 and the second transmission belt 504, the second rotating rod 505 and the third transmission belt 506, the third rotating rod 507 and the fourth transmission belt 508 and the third transmission belt 506, the fourth rotating rod 509 and the fourth transmission belt 508 and the fifth transmission belt 510 are all engaged and sleeved through transmission gears, and the drive motor 502 is electrically connected to the external power supply through a wire. There are multiple first positioning plates 2 and second positioning plates 3, and the multiple first positioning plates 2 and second positioning plates 3 are evenly distributed on the inner side of the cleaning frame 1 up and down. The distribution tracks of the first positioning plates 2 and the second positioning plates 3 form a "Z" shape structure. The outer wall of the first positioning plate 2 is provided with a first groove matching the horizontal movement track of the second transmission belt 504 and the fourth transmission belt 508, and a second groove matching the vertical movement track of the first transmission belt 503, the third transmission belt 506 and the fourth rotating rod 509.

[0046] In this embodiment: the latex sponge can be automatically transported and cleaned through this structure, without the need for manual winding of the latex sponge on each rotating rod, thereby reducing manual operation and increasing work efficiency.

[0047] Please refer to Figure 3-4 The inner walls of the first positioning plate 2 and the second connecting rod 607 are provided with a slot matching one end of the torsion spring 609, and the two ends of the torsion spring 609 are respectively clamped in the inner wall slots of the first positioning plate 2 and the second connecting rod 607. The outer wall tooth blocks of the second spur gear 605 are evenly distributed on the outer wall of the second spur gear 605 at a 180-degree angle. The outer wall of the rack 601 is meshed with the outer wall of the first spur gear 604. The outer wall of the swing rod 608 is an "L"-shaped structure. There are multiple swing rods 608, and the multiple swing rods 608 are evenly distributed on the outer wall of the second connecting rod 607. The ends of the multiple swing rods 608 are connected by scrapers.

[0048] In this embodiment: through this structure, when the first spur gear 604 rotates, it can drive the first connecting rod 603, the first spur gear 604, the second spur gear 605, the third spur gear 606, and the second connecting rod 607 to rotate. Then the rotation of the second connecting rod 607 will give tension to the torsion spring 609, thereby driving the swing rod 608 as a vibration component to swing. When the tooth block on the second spur gear 605 no longer contacts the third spur gear 606, the third spur gear 606 will no longer be pushed by the second spur gear 605, so that the second connecting rod 607 is reset under the tension of the torsion spring 609, so that the second connecting rod 607 is in contact with the latex sponge, knocking and scraping the latex sponge, causing the latex sponge to vibrate, so that the internal debris is removed from the gap between the latex sponges, and is gathered and cleaned under the scraping, further increasing the cleaning effect, until the second spur gear 605 contacts the third spur gear 606 again.

[0049] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A production process for mattress sponge, characterized in that: The specific process is as follows: S1, latex vulcanization: After injecting foam latex into the mold, the entire mold is placed in a vulcanizer for vulcanization; S2, molding and demoulding: after the latex sponge is formed, the mold is removed from the vulcanizer, and the formed latex sponge is removed from the mold; S3, latex cleaning: Use cleaning equipment to clean the latex sponge to prevent the residual substances on the latex sponge after S2 treatment from causing the latex sponge to turn yellow; S4, centrifugal dehydration: taking the latex sponge treated in S3 out of the equipment and dehydrating it by centrifugal drying; S5, cold air drying: taking out the latex sponge treated in S4 and drying it with cold air; The equipment used in the step S3 includes a cleaning frame (1), a reflow groove (4) is provided on the inner side of the cleaning frame (1), a first positioning plate (2) and a second positioning plate (3) are installed on the inner side of the cleaning frame (1), the first positioning plate (2) is located on one side of the second positioning plate (3), a water pipe (8) is installed inside the first positioning plate (2) and the second positioning plate (3), the bottom end of the water pipe (8) is connected to a water pump (7), the water pump (7) is fixedly connected to the inner cavity of the reflow groove (4) through a mounting bracket, a transmission mechanism (5) and a cleaning mechanism (6) are installed inside the second positioning plate (3) and the first positioning plate (2), and the cleaning mechanism (6) is located inside the transmission mechanism (5). The transmission mechanism (5) comprises a first rotating rod (501) rotatably connected to the inside of the first positioning plate (2), one end of the first rotating rod (501) is connected to a driving motor (502), and the outer wall of the first rotating rod (501) is sleeved with a first transmission belt (503); The cleaning mechanism (6) comprises a rack (601) and a fixing rod (602), wherein the rack (601) is fixed on the inner side of the first transmission belt (503), and the fixing rod (602) is fixedly mounted in the inner cavity of the first positioning plate (2); The transmission mechanism (5) further includes a second transmission belt (504) which is sleeved and engaged with the outer wall of the first transmission belt (503), the second transmission belt (504) is located at one end of the first transmission belt (503), the inner side of the top end of the first transmission belt (503) is sleeved and engaged with a second rotating rod (505), the outer wall of the other end of the second rotating rod (505) is sleeved and engaged with a third transmission belt (506), the inner wall of the third transmission belt (506) is sleeved and engaged with a third rotating rod (507), the inner side of the other end of the third rotating rod (507) is sleeved and engaged with a fourth transmission belt (508), the inner cavity of the fourth transmission belt (508) is sleeved and engaged with a fourth rotating rod (509), and the inner side of the fourth rotating rod (509) is sleeved and engaged with a fifth transmission belt (510); The cleaning mechanism (6) further comprises a first connecting rod (603) rotatably connected to one end of a fixed rod (602); a first spur gear (604) and a second spur gear (605) are fixedly connected to the outer wall of the first connecting rod (603); the second transmission belt (504) and the second spur gear (605) do not contact each other; a third spur gear (606) is meshed with the outer wall of the bottom end of the second spur gear (605); one end of the third spur gear (606) is fixedly connected to a second connecting rod (607); the outer wall of the second connecting rod (607) is fixedly connected to a swing rod (608); and the outer wall of the second connecting rod (607) is sleeved with a torsion spring (609); When the transmission mechanism (5) is working, it will also drive the cleaning mechanism (6) to work, so as to knock and scrape the latex sponge.

2. The production process of a mattress sponge according to claim 1, characterized in that: The first rotating rod (501) and the first transmission belt (503), the second transmission belt (504), the second rotating rod (505) and the third transmission belt (506), the third rotating rod (507) and the fourth transmission belt (508), the third transmission belt (506), the fourth rotating rod (509) and the fourth transmission belt (508), the fifth transmission belt (510) are all meshed and sleeved through transmission gears.

3. The production process of a mattress sponge according to claim 1, characterized in that: The driving motor (502) is electrically connected to an external power supply via a wire. A plurality of the first positioning plates (2) and the second positioning plates (3) are provided. The plurality of the first positioning plates (2) and the second positioning plates (3) are evenly distributed up and down on the inner side of the cleaning frame (1). The distribution tracks of the first positioning plates (2) and the second positioning plates (3) form a "Z"-shaped structure.

4. The production process of a mattress sponge according to claim 1, characterized in that: The outer wall of the first positioning plate (2) is provided with a first groove matching the lateral movement trajectory of the second transmission belt (504) and the fourth transmission belt (508), and a second groove matching the vertical movement trajectory of the first transmission belt (503), the third transmission belt (506) and the fourth rotating rod (509).

5. The production process of a mattress sponge according to claim 1, characterized in that: The inner walls of the first positioning plate (2) and the second connecting rod (607) are provided with a slot matching one end of the torsion spring (609), and the two ends of the torsion spring (609) are respectively clamped in the inner wall slots of the first positioning plate (2) and the second connecting rod (607).

6. The production process of a mattress sponge according to claim 1, characterized in that: The outer wall tooth blocks of the second spur gear (605) are evenly distributed at 180 degrees on the outer wall of the second spur gear (605), and the outer wall of the rack (601) is meshed with the outer wall of the first spur gear (604).

7. The production process of a mattress sponge according to claim 1, characterized in that: The outer wall of the swing rod (608) is in an "L"-shaped structure. There are multiple swing rods (608), and the multiple swing rods (608) are evenly distributed on the outer wall of the second connecting rod (607). The ends of the multiple swing rods (608) are connected by scrapers.

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