Bottom folding machine for square-bottom paper bag

Abstract

The invention discloses a square-bottom paper bag bottom folding machine, and relates to the technical field of paper bag bottom folding. The bottom folding machine for the square-bottom paper bag comprises a rotating machine, the right side of the rotating machine is fixedly connected with a paper folding machine, the outer wall of the paper folding machine is fixedly connected with a first support, and the outer wall of the first support is fixedly connected with an airflow mechanism. According to the bottom folding machine for the square-bottom paper bag, airflow is blown onto paper through the second pipeline, dust on the paper falls, flowing of the airflow can drive the dust to move, the dust cleaning effect is achieved, then the dust is cleaned in cooperation with movement of an elastic belt, the effect of accelerating dust cleaning is achieved, dust cleaning is ensured, and the paper bag bottom folding machine is suitable for popularization and application. In addition, the second pipeline is located at the bottom of the elastic belt, the elastic belt is made of an elastic material, the airflow flows at the bottom of the elastic belt, the higher the airflow speed is, the smaller the pressure is, and therefore the elastic belt can descend to be attached to the paper under the action of the pressure difference.

Description

Technical Field

[0001] The present invention relates to the technical field of paper bag bottom folding, and specifically to a square-bottom paper bag bottom folding machine. Background Art

[0002] As long as part of the bag's material contains paper, it can be generally referred to as a paper bag. There are many varieties of paper bags, diverse varieties of paper materials, and many styles. According to the material, they can be divided into: white cardboard paper bags, whiteboard paper bags, copperplate paper bags, kraft paper bags, and a small amount are made of special paper; Referring to a Chinese invention with a patent number of CN115195203A, this patent discloses a square-bottom folding device for a paper bag machine. The key points of its technical solution include an opening bottom drive mechanism. The opening bottom drive mechanism includes a rotating shaft, symmetrically arranged mounting seats on the rotating shaft, a suction disc is arranged between a pair of mounting seats, a transmission shaft connecting a paper clip is eccentrically arranged on the mounting seat, the transmission shaft is rotatably connected to the mounting seat and can move horizontally; a driving wheel is arranged on the rotating shaft, a cam for controlling the swing of the paper clip is arranged on one side of the driving wheel, and a paper clamping wheel cooperating with the cam is arranged on the transmission shaft; a return spring is arranged between the paper clip and the mounting seat; a push plate abutting against the transmission shaft is also arranged on the driving wheel, and the push plate is used to drive the transmission shaft to translate towards the mounting seat direction, and a spring is arranged between the paper clamping wheel and the mounting seat; Before the paper roll is made into a paper bag, it is stacked or transported. During stacking or transportation, dust and impurities will fall on it. The presence of impurities affects the aesthetics of the paper bag, and the difficulty of cleaning the dust after the paper bag is made will increase. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a square-bottom paper bag bottom folding machine to solve the problems raised in the above background art.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A square-bottom paper bag bottom folding machine includes a rotating machine. A paper folding machine is fixedly connected to the right side of the rotating machine. An air flow mechanism is fixedly connected to the outer wall of the paper folding machine. The air flow mechanism includes: A blower, which is fixedly connected to the outer wall of the first support. A first pipeline, which is fixedly connected to the bottom of the blower. The second pipeline, which is fixedly connected to the top of the fan. The second pipeline blows air flow onto the paper, causing the dust on the paper to fall. The flow of the air flow itself will drive the dust to move, achieving the effect of cleaning the dust. Then, combined with the movement of the elastic band to clean the dust, it produces the effect of accelerating the cleaning of the dust, ensuring the removal of the dust, reducing the subsequent dust removal process in the paper bag. Moreover, the second pipeline is located at the bottom of the elastic band. The elastic band is made of elastic material. The air flow flows at the bottom of the elastic band. The greater the air flow velocity, the smaller the pressure. Therefore, under the action of the pressure difference, the elastic band will descend and fit onto the paper. The elastic band and the cleaning brush clean the dust on the paper, making use of the air flow to drive the cleaning brush to clean the dust.

[0005] Preferably, an air flow chamber is also fixedly connected to the outer wall of the first pipeline. The fan is connected to the air flow chamber. The fan sucks air through the air flow chamber. The air flow chamber sucks the paper, causing the paper to move closer to the air flow chamber. The cleaning plate contacts the paper. By sucking the air flow, it ensures the fitting of the paper and the cleaning plate, increasing the cleaning force of the cleaning plate on the paper and ensuring the removal of the dust at the bottom of the paper. The setting of the second spring enables the cleaning plate to descend elastically, thus avoiding the rigid contact between the cleaning plate and the paper, achieving the effect of protecting the paper and preventing the paper from being damaged. A second support is fixedly connected to the outer wall of the air flow chamber.

[0006] Preferably, a bearing is fixedly connected to the outer wall of the second support. The inner wall of the bearing is rotatably connected to a rotating roller. The rotating roller is located at the top of the air flow chamber. The rotating machine is installed on the paper folding machine. The paper roll is installed on the rotating machine. The rotating machine drives the paper roll to rotate, enabling the paper to be conveyed to the paper folding machine. Before the paper is processed by the paper folding machine, the paper moves between the air flow chamber and the cross plate. The rotating roller is arranged at the top of the air flow chamber through the bearing. The paper contacts and moves with the rotating roller. The fan is powered on and started. The fan is connected to the air flow chamber through the first pipeline. The fan sucks air through the air flow chamber. The air flow chamber sucks the paper, causing the paper to move closer to the air flow chamber. The cleaning plate is arranged above the air flow chamber, so the cleaning plate contacts the paper. During the movement of the paper, the cleaning plate cleans the dust at the bottom of the paper. Moreover, the setting of the second spring enables the cleaning plate to descend elastically, thus avoiding the rigid contact between the cleaning plate and the paper. The fan is arranged at the top position through the second pipeline, so the second pipeline blows air flow onto the paper, causing the dust on the paper to fall. Moreover, due to the installation of the third support and the cross plate, the second pipeline is located at the bottom of the elastic band. The elastic band is made of elastic material. The air flow flows at the bottom of the elastic band. The greater the air flow velocity, the smaller the pressure. Therefore, under the action of the pressure difference, the elastic band will descend and fit onto the paper. The elastic band and the cleaning brush clean the dust on the paper. An installation plate is fixedly connected to the top of the air flow chamber. A second spring is fixedly connected to the top of the installation plate. The top of the second spring is fixedly connected to the cleaning plate.

[0007] Preferably, a cleaning mechanism is fixedly connected to the outer wall of the second pipeline. The cleaning mechanism includes a third bracket, and the third bracket is fixedly connected to the top of the second pipeline.

[0008] Preferably, a cross plate is fixedly connected to the outer wall of the third bracket, an elastic band is fixedly connected to the bottom of the cross plate, and the second pipeline is located at the bottom of the elastic band.

[0009] Preferably, a long rod is fixedly connected to the top of the elastic band, and cleaning brushes are fixedly connected to both ends of the long rod.

[0010] Preferably, a vibration mechanism is fixedly connected to the inner wall of the rotating machine. The vibration mechanism includes a round rod, and the round rod is fixedly connected to the inner wall of the rotating machine. A collar is sleeved on the outer wall of the round rod. By utilizing the rotation of the rotating machine, the long plate and the impact plate will collide with each other. After the long plate is collided, it will drive the impact ball to move. The impact ball moves and impacts the inner wall of the rotating machine. During the impact process, it will drive the rotating machine to vibrate. The vibration of the rotating machine drives the vibration of the paper, and the vibration of the paper further accelerates the falling of the dust on it. The vibration of the paper avoids the accumulation of dust and ensures the falling of the dust. The outer wall of the collar is fixedly connected to a long plate, and two first springs are fixedly connected to both sides of the long plate. The ends of both first springs are fixedly connected to impact balls.

[0011] Preferably, a fourth bracket is fixedly connected to the outer wall of the paper folding machine. When the paper moves towards the paper folding machine, the rotating machine will rotate to drive the paper to be sent out. The impact plate is installed on the paper folding machine through the fourth bracket. At this time, the impact plate is stationary. The long plate follows the rotation of the rotating machine, and the long plate and the impact plate will collide with each other. After the long plate is collided, it will drive the impact ball to move. The impact ball moves and impacts the inner wall of the rotating machine. During the impact process, it will drive the rotating machine to vibrate. The vibration of the rotating machine drives the vibration of the paper, and the vibration of the paper further accelerates the falling of the dust on it. Moreover, the first spring is arranged between the impact ball and the long plate. Under the elasticity of the first spring, the long plate is reset. The collar is sleeved on the round rod, so that the long plate can rotate. The outer wall of the fourth bracket is fixedly connected to an impact plate, and the impact plate is in movable contact with the long plate.

[0012] Preferably, a mounting rod is fixedly connected to the top of the paper folding machine. A telescoping machine is fixedly connected to the outer wall of the mounting rod. The bottom of the telescoping machine is movably connected to a telescoping shaft, and a pressing plate is fixedly connected to the bottom of the telescoping shaft. A pressure receiving plate is fixedly connected to the position of the outer wall of the rotating machine at the bottom of the pressing plate.

[0013] The present invention provides a square-bottom paper bag bottom folding machine. It has the following beneficial effects: 1. The bottom-fold paper bag folding machine blows air flow through the second pipeline onto the paper, causing the dust on the paper to fall. The flow of the air itself drives the dust to move, achieving the effect of cleaning the dust. Then, in combination with the movement of the elastic band, the dust is cleaned, resulting in an accelerated dust cleaning effect, ensuring the removal of dust and reducing the subsequent dust removal process for the paper bag. Moreover, the second pipeline is located at the bottom of the elastic band. The elastic band is made of elastic material. The air flow flows at the bottom of the elastic band. The greater the air flow velocity, the smaller the pressure. Therefore, under the action of the pressure difference, the elastic band will descend and fit onto the paper. The elastic band and the cleaning brush clean the dust on the paper, and the flow of the air is utilized to drive the cleaning brush to clean the dust.

[0014] 2. The bottom-fold paper bag folding machine is connected to the air flow bin through a fan. The fan sucks air through the air flow bin, and the air flow bin sucks the paper, causing the paper to move closer to the direction of the air flow bin. The cleaning plate contacts the paper. By sucking the air flow, the fitting of the paper and the cleaning plate is ensured, increasing the cleaning force of the cleaning plate on the paper and ensuring the removal of the dust at the bottom of the paper. The setting of the second spring enables the cleaning plate to descend elastically, thus avoiding the rigid contact between the cleaning plate and the paper, achieving the effect of protecting the paper and preventing the paper from being damaged.

[0015] 3. The bottom-fold paper bag folding machine utilizes the rotation of the rotating machine. The long plate and the impact plate will collide with each other. After being collided, the long plate will drive the impact ball to move. The movement of the impact ball collides with the inner wall of the rotating machine. During the collision process, the rotating machine will be driven to vibrate. The vibration of the rotating machine drives the vibration of the paper, and the vibration of the paper accelerates the falling of the dust on it. The vibration of the paper avoids the accumulation of dust and ensures the falling of the dust.

[0016] 4. The bottom-fold paper bag folding machine has a square pressing plate. When it descends, it fits with the receiving pressing plate. During the fitting process, the paper is extruded to form a square mark, facilitating the subsequent formation of a bottom-fold paper bag and accelerating the forming efficiency of the paper bag. Moreover, each time the pressing plate descends, it pulls the paper roll, causing the paper roll to descend. The descending paper roll contacts the cleaning plate, increasing the contact force between the paper and the cleaning plate and enhancing the cleaning effect on the paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention Figure 2 It is an axonometric three-dimensional structure schematic diagram of the present invention; Figure 3 It is a schematic diagram of the dorsal three-dimensional structure of the present invention; Figure 4 It is the present invention Figure 2 Sectional structure schematic diagram; Figure 5 It is the present invention Figure 2 Enlarged structure schematic diagram of part A in the present invention; Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure of part B in the present invention; Figure 7 Schematic diagram of the partial structure of the fan of the present invention.

[0018] In the figure: 1, rotating machine; 2, first bracket; 3, paper folding machine; 4, air flow mechanism; 41, fan; 42, first pipeline; 43, second pipeline; 44, second bracket; 45, air flow bin; 46, bearing; 47, rotating roller; 5, cleaning mechanism; 51, cross plate; 52, third bracket; 53, elastic band; 54, cleaning brush; 55, long rod; 6, vibration mechanism; 61, collar; 62, round rod; 63, impact ball; 64, first spring; 65, long plate; 66, impact plate; 67, fourth bracket; 7, mounting plate; 8, second spring; 9, cleaning plate; 10, telescopic shaft; 11, telescopic machine; 12, pressing plate; 13, mounting rod; 14, pressure receiving plate. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation of the present invention. Embodiment 1

[0021] Please refer to Figures 1-4 , the present invention provides a technical solution: a square-bottom paper bag bottom folding machine, including a rotating machine 1, a paper folding machine 3 is fixedly connected to the right side of the rotating machine 1, a first bracket 2 is fixedly connected to the outer wall of the paper folding machine 3, and an air flow mechanism 4 is fixedly connected to the outer wall of the first bracket 2; The air flow mechanism 4 includes: A fan 41, the fan 41 is fixedly connected to the outer wall of the first bracket 2; A first pipeline 42, the first pipeline 42 is fixedly connected to the bottom of the fan 41; The second duct 43 is fixedly connected to the top of the fan 41. The second duct 43 blows air onto the paper, causing the dust on the paper to fall. The flow of the air itself drives the dust to move, achieving the effect of cleaning the dust. Then, in cooperation with the movement of the elastic band 53, the dust is cleaned, resulting in an accelerated dust cleaning effect, ensuring the removal of dust and reducing the subsequent dust removal process for the paper bags. Moreover, the second duct 43 is located at the bottom of the elastic band 53. The elastic band 53 is made of an elastic material. The air flow moves at the bottom of the elastic band 53. The greater the air flow velocity, the smaller the pressure. Therefore, under the action of the pressure difference, the elastic band 53 will descend and fit onto the paper. The elastic band 53 and the cleaning brush 54 clean the dust on the paper, making use of the air flow to drive the cleaning brush 54 to clean the dust.

[0022] An air flow chamber 45 is also fixedly connected to the outer wall of the first duct 42. The fan 41 is connected to the air flow chamber 45. The fan 41 sucks air through the air flow chamber 45. The air flow chamber 45 sucks the paper, causing the paper to move closer to the air flow chamber 45. The cleaning plate 9 contacts the paper. By sucking the air flow, the fitting of the paper and the cleaning plate 9 is ensured, increasing the cleaning force of the cleaning plate 9 on the paper and ensuring the removal of the dust at the bottom of the paper. The setting of the second spring 8 enables the cleaning plate 9 to elastically descend, thus avoiding the rigid contact between the cleaning plate 9 and the paper, achieving the effect of protecting the paper and preventing damage to the paper. The outer wall of the air flow chamber 45 is fixedly connected to a second support 44.

[0023] A bearing 46 is fixedly connected to the outer wall of the second support 44. The inner wall of the bearing 46 is rotatably connected to a rotating roller 47. The rotating roller 47 is located at the top of the air flow chamber 45. A mounting plate 7 is fixedly connected to the top of the air flow chamber 45. A second spring 8 is fixedly connected to the top of the mounting plate 7. The top of the second spring 8 is fixedly connected to a cleaning plate 9.

[0024] A cleaning mechanism 5 is fixedly connected to the outer wall of the second duct 43. The cleaning mechanism 5 includes a third support 52, and the third support 52 is fixedly connected to the top of the second duct 43.

[0025] A cross plate 51 is fixedly connected to the outer wall of the third support 52. An elastic band 53 is fixedly connected to the bottom of the cross plate 51. The second duct 43 is located at the bottom of the elastic band 53.

[0026] A long rod 55 is fixedly connected to the top of the elastic band 53. Cleaning brushes 54 are fixedly connected to both ends of the long rod 55.

[0027] A mounting rod 13 is fixedly connected to the top of the paper folding machine 3. A telescoping machine 11 is fixedly connected to the outer wall of the mounting rod 13. The bottom of the telescoping machine 11 is movably connected to a telescoping shaft 10. A pressing plate 12 is fixedly connected to the bottom of the telescoping shaft 10. A pressure receiving plate 14 is fixedly connected to the outer wall of the rotating machine 1 at the position below the pressing plate 12.

[0028] During use, the rotating machine 1 is installed on the paper folding machine 3, the paper roll is installed on the rotating machine 1, and the rotating machine 1 drives the paper roll to rotate to convey the paper to the paper folding machine 3. The paper folding machine 3 processes the paper into paper bags. Before the paper is processed by the paper folding machine 3, the paper moves between the air flow bin 45 and the cross plate 51. The rotating roller 47 is arranged at the top of the air flow bin 45 through the bearing 46, and the paper contacts and moves with the rotating roller 47. The fan 41 is powered on and started. The fan 41 is connected to the air flow bin 45 through the first pipeline 42. The fan 41 sucks air through the air flow bin 45, and the air flow bin 45 sucks the paper, so that the paper will move closer to the air flow bin 45. The cleaning plate 9 is arranged above the air flow bin 45, so the cleaning plate 9 contacts the paper. During the movement of the paper, the cleaning plate 9 cleans the dust at the bottom of the paper. Moreover, due to the setting of the second spring 8, the cleaning plate 9 can elastically descend, so as to avoid the rigid contact between the cleaning plate 9 and the paper. The fan 41 is arranged at the top position through the second pipeline 43, so the second pipeline 43 blows air flow onto the paper to make the dust on the paper fall off. Moreover, due to the installation of the third support 52 and the cross plate 51, the second pipeline 43 is located at the bottom of the elastic belt 53. The elastic belt 53 is made of elastic material. The air flow flows at the bottom of the elastic belt 53. The greater the air flow velocity, the smaller the pressure. Therefore, under the action of the pressure difference, the elastic belt 53 will descend and fit onto the paper, and the elastic belt 53 and the cleaning brush 54 clean the dust on the paper. During the conveying process of the paper roll by the rotating machine 1, the telescoping machine 11 is powered on and started. The telescoping machine 11 starts at regular intervals and drives the pressing plate 12 to descend through the telescoping shaft 10. The pressing plate 12 is square. When descending, it fits with the receiving plate 14. During the fitting process, the paper is extruded with a square mark, which is convenient for subsequent making of square-bottom paper bags. Moreover, each descent of the pressing plate 12 will pull the paper roll, so that the paper roll descends, and the paper roll descends and contacts the cleaning plate 9. Embodiment Two

[0029] Please refer to Figures 1-6 , based on Embodiment One, the present invention provides a technical solution: A vibration mechanism 6 is fixedly connected to the inner wall of the rotating machine 1. The vibration mechanism 6 includes a round rod 62. The round rod 62 is fixedly connected to the inner wall of the rotating machine 1. A collar 61 is sleeved on the outer wall of the round rod 62. A long plate 65 is fixedly connected to the outer wall of the collar 61. Utilizing the rotation of the rotating machine 1, the long plate 65 and the impact plate 66 will collide with each other. After the long plate 65 is collided, it will drive the impact ball 63 to move. The movement of the impact ball 63 collides with the inner wall of the rotating machine 1. During the collision process, it will drive the rotating machine 1 to vibrate. The vibration of the rotating machine 1 drives the vibration of the paper, and the vibration of the paper further accelerates the falling of the dust on it. The vibration of the paper avoids the accumulation of dust and ensures the falling of dust. Two first springs 64 are fixedly connected to both sides of the long plate 65, and impact balls 63 are fixedly connected to the ends of the two first springs 64.

[0030] The outer wall of the paper folding machine 3 is fixedly connected with a fourth support 67, and the outer wall of the fourth support 67 is fixedly connected with an impact plate 66, and the impact plate 66 is in movable contact with the long plate 65.

[0031] During use, when the paper moves towards the paper folding machine 3, the rotating machine 1 will rotate to drive the paper to be sent out. The impact plate 66 is installed on the paper folding machine 3 through the fourth support 67. At this time, the impact plate 66 is stationary, and the long plate 65 follows the rotation of the rotating machine 1. The long plate 65 and the impact plate 66 will collide with each other. After the long plate 65 is collided, it will drive the impact ball 63 to move. The impact ball 63 moves and impacts the inner wall of the rotating machine 1. During the impact process, it will drive the rotating machine 1 to vibrate. The vibration of the rotating machine 1 drives the vibration of the paper, and the vibration of the paper further accelerates the falling of the dust on it. Moreover, the first spring 64 is arranged between the impact ball 63 and the long plate 65. Under the elasticity of the first spring 64, the long plate 65 is reset. The collar 61 is sleeved on the round rod 62, so that the long plate 65 can rotate.

[0032] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A square-bottom paper bag bottom folding machine, comprising a rotating machine (1), characterized in that: On the right side of the rotating machine (1), an origami machine (3) is fixedly connected. On the outer wall of the origami machine (3), a first support (2) is fixedly connected. On the outer wall of the first support (2), an air flow mechanism (4) is fixedly connected; The air flow mechanism (4) includes: A blower (41) fixedly connected to the outer wall of the first support (2); A first pipe (42) fixedly connected to the bottom of the blower (41); A second pipe (43) fixedly connected to the top of the blower (41).

2. The bottom folding machine for square-bottom paper bags according to claim 1, wherein: On the outer wall of the first pipe (42), an air flow chamber (45) is also fixedly connected. On the outer wall of the air flow chamber (45), a second support (44) is fixedly connected.

3. The bottom folding machine for square-bottom paper bags according to claim 2, characterized in that: On the outer wall of the second support (44), a bearing (46) is fixedly connected. Inside the inner wall of the bearing (46), a rotating roller (47) is rotatably connected. The rotating roller (47) is located on the top of the air flow chamber (45). On the top of the air flow chamber (45), a mounting plate (7) is fixedly connected. On the top of the mounting plate (7), a second spring (8) is fixedly connected. On the top of the second spring (8), a cleaning plate (9) is fixedly connected.

4. The bottom folding machine for square-bottom paper bags according to claim 3, characterized in that: On the outer wall of the second pipe (43), a cleaning mechanism (5) is fixedly connected. The cleaning mechanism (5) includes a third support (52) fixedly connected to the top of the second pipe (43).

5. The bottom folding machine for square-bottom paper bags according to claim 4, characterized in that: On the outer wall of the third support (52), a cross plate (51) is fixedly connected. At the bottom of the cross plate (51), an elastic band (53) is fixedly connected. The second pipe (43) is located at the bottom of the elastic band (53).

6. The bottom folding machine for square-bottom paper bags according to claim 5, wherein: At the top of the elastic band (53), a long rod (55) is fixedly connected. At both ends of the long rod (55), cleaning brushes (54) are fixedly connected.

7. A bottom folding machine for square-bottom paper bags according to claim 1, characterized in that: Inside the inner wall of the rotating machine (1), a vibration mechanism (6) is fixedly connected. The vibration mechanism (6) includes a round rod (62) fixedly connected to the inner wall of the rotating machine (1). On the outer wall of the round rod (62), a collar (61) is sleeved. On the outer wall of the collar (61), a long plate (65) is fixedly connected. On both sides of the long plate (65), two first springs (64) are fixedly connected. At the ends of the two first springs (64), impact balls (63) are fixedly connected.

8. A bottom folding machine for square-bottom paper bags according to claim 7, characterized in that: On the outer wall of the origami machine (3), a fourth support (67) is fixedly connected. On the outer wall of the fourth support (67), an impact plate (66) is fixedly connected. The impact plate (66) is in movable contact with the long plate (65).

9. A bottom folding machine for square bottom paper bags according to claim 1, characterized in that: On the top of the origami machine (3), a mounting rod (13) is fixedly connected. On the outer wall of the mounting rod (13), a telescoping machine (11) is fixedly connected. At the bottom of the telescoping machine (11), a telescopic shaft (10) is movably connected. At the bottom of the telescopic shaft (10), a pressing plate (12) is fixedly connected. At the position on the outer wall of the rotating machine (1) below the pressing plate (12), a pressure-receiving plate (14) is fixedly connected.

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