Efficient rubber tube packing machine

By designing an efficient hose packing machine, using technical means such as pipe feeding mechanism, fixing mechanism and rotating motor, the existing hose packing method cannot meet customers' needs for longer hose, and an efficient and fast hose packing process is achieved.

CN222905940UActive Publication Date: 2025-05-27ZHEJIANG JINHAO PIPE IND CO LTD
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Patent Information

Application Number
CN202421823800.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-30
Publication Date
2025-05-27
Estimated Expiration
2034-07-30

AI Technical Summary

Technical Problem

The existing hose packaging method cannot meet customers' needs for longer hoses, and requires cutting or manual bending, which is time-consuming and labor-consuming.

Method used

An efficient hose packing machine is designed, and the hose is fed into the packaging tray using a pipe feeding mechanism. The fixing mechanism fixes the end of the hose. The rotating motor drives the packaging tray to rotate, and is wound by a packaging column and tied and fixed by a belt puller.

Benefits of technology

It realizes efficient packaging of long-length hoses, which is convenient and fast, without cutting or manual bending, saving time and effort.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to an efficient rubber tube packing machine, and relates to the technical field of rubber tube manufacturing machinery, the efficient rubber tube packing machine comprises a rack, a packing disc is rotationally arranged on the rack, a tube conveying mechanism is arranged on the rack, the tube conveying mechanism is used for conveying rubber tubes to the packing disc, and a plurality of packing columns are uniformly distributed on the packing disc in the circumferential direction with the center of the packing disc as the circle center; a fixing mechanism is arranged on the packing disc, a belt binding machine is arranged on the machine frame located below the packing disc, and the belt binding machine binds a rubber pipe roll wound on the packing disc with a binding belt. One end of a rubber tube is fed to the packaging disc through the tube feeding mechanism, the end of the rubber tube is fixed through the fixing mechanism on the packaging disc, then the rotating motor is started to drive the packaging disc to rotate, the packaging disc rotates to wind the rubber tube through the multiple packaging columns, and the rubber tube is bound and fixed through the lacing machine after being wound. The rubber tube packing machine is convenient and fast to use, does not need cutting or manual bending, and saves time and labor.
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Description

Technical Field

[0001] The present application relates to the technical field of hose manufacturing machinery, and in particular, to an efficient hose bundling machine. Background Art

[0002] A hose, also known as a rubber hose, is a tubular product made of rubber material and is widely used in multiple fields such as industry, agriculture, construction, automobiles, and medical treatment. Hoses have good elasticity and chemical resistance, can withstand certain pressures and temperatures, and are suitable for transporting media such as liquids, gases, and solid particles.

[0003] After the hoses are manufactured, in order to facilitate the transportation of the hoses, the hoses need to be bundled. The bundling work in existing factories is to cut the hoses into specified lengths, and then tie several hoses of fixed lengths together with ropes or tapes. Although this method is simple, it cannot meet the needs of customers for hoses of longer lengths, and the applicable range is small. Summary of the Utility Model

[0004] In order to facilitate the bundling and transportation of hoses with longer lengths, the present application provides an efficient hose bundling machine.

[0005] An efficient hose bundling machine provided by the present application adopts the following technical solutions:

[0006] An efficient hose bundling machine includes a frame. A bundling disk is rotatably arranged on the frame. A rotating motor is arranged on the frame. The output shaft of the rotating motor is fixedly connected to the bundling disk. A hose feeding mechanism is arranged on the frame. The hose feeding mechanism is used to send the hose onto the bundling disk. A plurality of bundling columns are circumferentially and evenly arranged on the bundling disk with the center of the bundling disk as the center of the circle. A fixing mechanism is arranged on the bundling disk. The fixing mechanism fixes the end of the hose. A banding machine is arranged on the frame below the bundling disk. The banding machine binds and ties the hose coil wound on the bundling disk.

[0007] By adopting the above technical solutions, the hose feeding mechanism sends one end of the hose onto the bundling disk. The fixing mechanism on the bundling disk fixes the end of the hose. Then the rotating motor is started to drive the bundling disk to rotate. The bundling disk rotates to wind the hose through a plurality of bundling columns. After the hose is wound, it is bound and fixed by the banding machine, thus completing the bundling work of the hose with a longer length, which is convenient and fast, without cutting or manual bending, saving time and effort.

[0008] Optionally, the hose feeding mechanism includes:

[0009] A tubing feeding groove is horizontally and slidably arranged on the frame along the axial direction of the packing column. The width of the tubing feeding groove is only enough to accommodate one rubber hose. The rubber hoses are stacked vertically on the tubing feeding groove. An outlet is formed on the side wall of one end of the tubing feeding groove close to the packing disc.

[0010] A tubing feeding push plate is slidably arranged on the tubing feeding groove along the length direction of the tubing feeding groove.

[0011] A tubing feeding cylinder is arranged on the tubing feeding groove, and the piston rod is connected to the tubing feeding push plate. The tubing feeding push plate pushes the rubber hose out from the outlet under the action of the tubing feeding cylinder.

[0012] A moving assembly is arranged on the frame and is used to drive the tubing feeding groove to move horizontally.

[0013] By adopting the above technical solutions, when the tubing feeding cylinder is started, it drives the tubing feeding push plate to move. The movement of the tubing feeding push plate drives the rubber hose to move. The rubber hose moves out from the outlet and moves onto the packing disc. At the same time, the moving assembly is started to drive the tubing feeding groove to move, so that the rubber hose sent out by the tubing feeding groove can be evenly wound around the packing column. After one rubber hose is moved out, the tubing feeding cylinder moves the tubing feeding push plate back to its original position. Then, the stacked rubber hoses in the tubing feeding groove above the outlet will fall under the action of gravity. Starting the tubing feeding cylinder again can continue to push out the rubber hose, thus completing the feeding work of moving the rubber hose onto the packing disc.

[0014] Optionally, the moving assembly includes:

[0015] A moving lead screw is rotatably arranged on the frame and is threadedly connected to the tubing feeding groove.

[0016] A moving motor is arranged on the frame, and the output shaft is connected to the moving lead screw.

[0017] By adopting the above technical solutions, when the moving motor is started, it drives the moving lead screw to rotate. The rotation of the moving lead screw drives the tubing feeding groove to move, thus realizing the movement of the position of the tubing feeding groove by controlling the moving motor.

[0018] Optionally, the fixing mechanism includes:

[0019] A first fixing plate is arranged on the packing disc.

[0020] A second fixing plate is rotatably arranged on the packing disc. The rotation point of the second fixing plate is at its center. When the rubber hose moves onto the packing disc, the first fixing plate extends into the rubber hose and abuts against the inner side wall of the rubber hose, and the second fixing plate is located outside the rubber hose.

[0021] A rotating assembly, which is arranged on the packing disc and used to drive the second fixed plate to rotate. The second fixed plate cooperates with the first fixed plate under the action of the rotating assembly to clamp the side wall of the rubber hose.

[0022] By adopting the above technical solution, when the rubber hose moves to the packing disc, as the rubber hose moves, the first fixed plate extends into the rubber hose. Then the rotating assembly starts to drive the second fixed plate to rotate. The second fixed plate rotates and abuts against the outer side wall of the rubber hose and cooperates with the first fixed plate to clamp the side wall of the rubber hose, thus completing the fixing work of the end of the rubber hose.

[0023] Optionally, the rotating assembly includes:

[0024] A rotating spring, which is arranged on the first fixed plate and the second fixed plate. The second fixed plate cooperates with the first fixed plate under the action of the rotating spring to clamp the side wall of the rubber hose;

[0025] A rotating cylinder, which is arranged on the packing disc. The piston rod of the rotating cylinder is connected to the second fixed plate. The rotating cylinder and the rotating spring are respectively located on both sides of the second fixed plate.

[0026] By adopting the above technical solution, under normal circumstances, the second fixed plate abuts against the first fixed plate under the action of the rotating spring. When the rubber hose is about to move to the packing disc, the rotating cylinder starts to drive the second fixed plate to compress the rotating spring and move, so that the second fixed plate is separated from the first fixed plate. Then the rubber hose can be moved between the first fixed plate and the second fixed plate. Then control the rotating cylinder to be separated from the second fixed plate. The second fixed plate then cooperates with the first fixed plate under the action of the rotating spring to clamp the side wall of the rubber hose, thus completing the rotation work of the second fixed plate.

[0027] Optionally, an outlet mechanism for pushing the packed rubber hose out of the packing disc is arranged on the packing disc. The outlet mechanism includes:

[0028] An outlet cylinder, which is horizontally slidably arranged on the frame;

[0029] An outlet plate, which is arranged on the piston rod of the outlet cylinder;

[0030] A sliding assembly, which is arranged on the frame and used to drive the outlet cylinder to move. The outlet cylinder drives the outlet plate to insert between the rubber hose and the packing disc under the action of the sliding assembly.

[0031] By adopting the above technical solution, when the rubber hose on the packing disc is packed, the sliding assembly starts to drive the outlet cylinder to move. The outlet cylinder moves to drive the outlet plate to move. The outlet plate moves and inserts between the rubber hose and the packing disc. Then the outlet cylinder starts to drive the outlet plate to move. The outlet plate moves to push the rubber hose out of the packing column, thus completing the pushing work of the rubber hose.

[0032] Optionally, the sliding assembly includes:

[0033] A sliding block which is slidably arranged on the frame in a direction close to or away from the packing disc, and the tube outlet cylinder is arranged on the sliding block;

[0034] A sliding lead screw which is rotatably arranged on the frame and is threadedly connected to the sliding block;

[0035] A sliding motor which is arranged on the frame and the output shaft of which is connected to the sliding lead screw.

[0036] By adopting the above technical solution, when the sliding motor is started, it drives the sliding lead screw to rotate. The rotation of the sliding lead screw drives the sliding block to move, and the movement of the sliding block drives the tube outlet cylinder to move, so that the movement of the tube outlet cylinder is realized by controlling the sliding motor.

[0037] In summary, the present application includes at least one of the following beneficial technical effects:

[0038] 1. One end of the rubber tube is sent onto the packing disc by the tube feeding mechanism, and the fixing mechanism on the packing disc fixes the end of the rubber tube. Then, when the rotating motor is started, it drives the packing disc to rotate. The rotation of the packing disc winds the rubber tube through a plurality of packing columns. After the rubber tube is wound up, it is tied and fixed by a bundling machine, thus completing the packing work of the rubber tube with a longer length, which is convenient and fast, without cutting or manual bending, saving time and effort;

[0039] 2. When the moving motor is started, it drives the moving lead screw to rotate. The rotation of the moving lead screw drives the tube feeding groove to move, so that the movement of the position of the tube feeding groove is realized by controlling the moving motor;

[0040] 3. When the sliding motor is started, it drives the sliding lead screw to rotate. The rotation of the sliding lead screw drives the sliding block to move, and the movement of the sliding block drives the tube outlet cylinder to move, so that the movement of the tube outlet cylinder is realized by controlling the sliding motor. Description of the Drawings

[0041] Figure 1 is a three-dimensional structural schematic diagram of the present application;

[0042] Figure 2 is a structural schematic diagram of the tube feeding mechanism and the tube outlet mechanism in the present application, in which the side wall of the tube feeding groove is sectioned;

[0043] Figure 3 is Figure 1 an enlarged schematic diagram of part A in

[0044] Reference numerals: 1, frame; 11, packing disc; 12, rotating motor; 13, packing column; 14, banding machine; 2, pipe feeding mechanism; 21, pipe feeding groove; 22, pipe feeding push plate; 23, pipe feeding cylinder; 24, moving assembly; 25, moving lead screw; 26, moving motor; 3, fixing mechanism; 31, first fixing plate; 32, second fixing plate; 33, rotating assembly; 34, rotating spring; 35, rotating cylinder; 4, pipe discharging mechanism; 41, pipe discharging cylinder; 42, pipe discharging plate; 43, sliding assembly; 44, sliding block; 45, sliding lead screw; 46, sliding motor. Detailed implementation mode

[0045] The following will further describe the present application in detail with reference to Figure 1 - attached Figure 3 drawings to make further detailed description of the present application.

[0046] The embodiment of the present application discloses an efficient rubber hose packing machine.

[0047] Referring to Figure 1 and Figure 2 , the efficient rubber hose packing machine includes a frame 1, a packing disc 11 is rotatably installed on the frame 1, and a rotating motor 12 is fixedly installed on the frame 1. The output shaft of the rotating motor 12 is fixedly connected to the packing disc 11, and a pipe feeding mechanism 2 is arranged on the frame 1. The pipe feeding mechanism 2 is used to send the rubber hose onto the packing disc 11.

[0048] Referring to Figure 1 , a plurality of packing columns 13 are fixedly installed on the surface of the packing disc 11 circumferentially and uniformly with the center of the packing disc 11 as the center of the circle. A fixing mechanism 3 is arranged on the packing disc 11 to fix the end of the rubber hose. A banding machine 14 is fixedly installed on the frame 1 below the packing disc 11, and the banding machine 14 binds and ties the rubber hose roll wound on the packing disc 11.

[0049] Referring to Figure 1 and Figure 2 , the pipe feeding mechanism 2 sends one end of the rubber hose onto the packing disc 11, the fixing mechanism 3 on the packing disc 11 fixes the end of the rubber hose, then the rotating motor 12 is started to drive the packing disc 11 to rotate, and the packing disc 11 rotates to wind the rubber hose through a plurality of packing columns 13. After the rubber hose is wound, it is tied and fixed by the banding machine 14, thus completing the packing work of the rubber hose with a longer length, which is convenient and fast, without cutting or manual bending, saving time and effort.

[0050] Referring to Figure 1 and Figure 2, the tube feeding mechanism 2 includes a tube feeding groove 21, a tube feeding push plate 22, a tube feeding cylinder 23 and a moving component 24. The tube feeding groove 21 is horizontally slidably installed along the axial direction of the packing disc 11 on the frame 1 on one side of the packing disc 11. The upper opening of the tube feeding groove 21 is in an open state. The width of the tube feeding groove 21 is only enough to accommodate one rubber tube. The rubber tubes are stacked vertically on the tube feeding groove 21, and an outlet pipe opening is provided on the side wall of the tube feeding groove 21 close to the packing disc 11. The tube feeding push plate 22 is installed on the tube feeding groove 21 along the length direction of the tube feeding groove 21. The tube feeding cylinder 23 is fixedly connected to the side wall of the tube feeding away from the packing disc 11 and the piston rod extends into the tube feeding groove 21 and is fixedly connected to the tube feeding push plate 22.

[0051] Referring to Figure 1 and Figure 2 , the moving component 24 is arranged on the frame 1 and is used to drive the tube feeding groove 21 to move horizontally. The moving component 24 includes a moving lead screw 25 and a moving motor 26. The moving lead screw 25 is rotatably installed on the frame 1 and is threadedly connected to the tube feeding groove 21. The moving motor 26 is fixedly installed on the frame 1 and the output shaft is connected to the moving lead screw 25. When the moving motor 26 is started, it drives the moving lead screw 25 to rotate, and the rotation of the moving lead screw 25 drives the tube feeding groove 21 to move.

[0052] Referring to Figure 1 and Figure 2 , when the tube feeding cylinder 23 is started, it drives the tube feeding push plate 22 to move. The movement of the tube feeding push plate 22 drives the rubber tube to move. The rubber tube moves out from the outlet pipe opening and moves onto the packing disc 11. At the same time, the moving motor 26 is started to drive the tube feeding groove 21 to move, so that the rubber tube sent out by the tube feeding groove 21 can be evenly wound around the packing column 13. After one rubber tube is moved out, the tube feeding cylinder 23 moves the tube feeding push plate 22 back to its original position, and then the stacked rubber tubes in the tube feeding groove 21 above the outlet pipe opening will fall under the action of gravity. Starting the tube feeding cylinder 23 again can continue to push out the rubber tube, thus completing the feeding work of moving the rubber tube onto the packing disc 11.

[0053] Referring to Figure 1 and Figure 3 , the fixing mechanism 3 includes a first fixing plate 31, a second fixing plate 32 and a rotating component 33. The first fixing plate 31 is fixedly installed on the surface of the packing disc 11. The second fixing plate 32 is rotatably installed on the surface of the packing disc 11 above the first fixing plate 31. The rotating component 33 is arranged on the packing disc 11 and is used to drive the second fixing plate 32 to rotate.

[0054] Referring to Figure 1 and Figure 3, the rotating assembly 33 includes a rotating spring 34 and a rotating cylinder 35. The two ends of the rotating spring 34 are respectively fixedly connected to the opposite side walls of the first fixing plate 31 and the second fixing plate 32. One end of the second fixing plate away from the rotating spring 34 cooperates with the first fixing plate 31 under the action of the rotating spring 34 to clamp the side wall of the rubber hose. The rotating cylinder 35 is fixedly installed on the surface of the packing disc 11. The piston rod of the rotating cylinder 35 is connected to the second fixing plate 32. When the rotating cylinder 35 is started, it can drive the second fixing plate 32 to move by compressing the rotating spring 34.

[0055] Referring to Figure 1 and Figure 3 , under normal circumstances, the second fixing plate 32 abuts against the first fixing plate 31 under the action of the rotating spring 34. When the rubber hose is to be moved onto the packing disc 11, the rotating cylinder 35 is started to drive the second fixing plate 32 to move by compressing the rotating spring 34, so that the second fixing plate 32 is separated from the first fixing plate 31, and then the rubber hose can be moved between the first fixing plate 31 and the second fixing plate 32. Then, the rotating cylinder 35 is controlled to be separated from the second fixing plate 32, and the second fixing plate 32 cooperates with the first fixing plate 31 under the action of the rotating spring 34 to clamp the side wall of the rubber hose.

[0056] Referring to Figure 1 and Figure 2 , an outlet mechanism 4 for pushing the packed rubber hose out of the packing disc 11 is provided on the packing disc 11. The outlet mechanism 4 includes an outlet cylinder 41, an outlet plate 42 and a sliding assembly 43. The outlet cylinder 41 is horizontally slidably installed on the frame 1. The outlet plate 42 is fixedly installed on the piston rod of the outlet cylinder 41. The sliding assembly 43 is arranged on the frame 1 and is used to drive the outlet cylinder 41 to move.

[0057] Referring to Figure 1 and Figure 2 , the sliding assembly 43 includes a sliding block 44, a sliding screw rod 45 and a sliding motor 46. The sliding block 44 is slidably installed on the frame 1 in a direction close to or away from the packing disc 11. The outlet cylinder 41 is fixedly installed on the upper surface of the sliding block 44. The sliding screw rod 45 is rotatably installed on the frame 1 and is threadedly connected to the sliding block 44. The sliding motor 46 is fixedly installed on the frame 1 and the output shaft is connected to the sliding screw rod 45.

[0058] Referring to Figure 1 and Figure 2 , when the sliding motor 46 is started, it drives the sliding screw rod 45 to rotate. The rotation of the sliding screw rod 45 drives the sliding block 44 to move. The movement of the sliding block 44 drives the outlet cylinder 41 to move. The movement of the outlet cylinder 41 drives the outlet plate 42 to move. The outlet plate 42 moves and is inserted between the rubber hose and the packing disc 11. Then, the outlet cylinder 41 is started to drive the outlet plate 42 to move, and the outlet plate 42 moves to push the rubber hose out of the packing column 13, thus completing the pushing work of the rubber hose.

[0059] The working principle of the embodiment of this application is as follows:

[0060] The tube feeding cylinder 23 starts to drive the tube feeding push plate 22 to move. The movement of the tube feeding push plate 22 drives the rubber tube to move. The rubber tube moves out from the outlet and moves onto the packing disc 11. The first fixing plate 31 and the second fixing plate 32 cooperate to clamp and fix the end of the rubber tube. Then, the rotating motor 12 starts to drive the packing disc 11 to rotate. The rotation of the packing disc 11 winds up the rubber tube through a number of packing columns 13. After the rubber tube is wound up, it is tied and fixed by the bundling machine 14, thus completing the packing work of the rubber tube with a longer length, which is convenient and fast, without cutting or manual bending, saving time and effort.

[0061] The above are all the preferred embodiments of this application. Without restricting the protection scope of this application accordingly, therefore: All equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. An efficient hose baler, characterized by: The invention comprises a frame (1), a packing disk (11) is rotatably arranged on the frame (1), a rotating motor (12) is arranged on the frame (1), an output shaft of the rotating motor (12) is fixedly connected to the packing disk (11), a pipe delivery mechanism (2) is arranged on the frame (1), the pipe delivery mechanism (2) is used to deliver the rubber hose to the packing disk (11), a plurality of packing columns (13) are evenly distributed in the circumferential direction on the packing disk (11) with the center of the packing disk (11) as the center, a fixing mechanism (3) is arranged on the packing disk (11), the fixing mechanism (3) fixes the end of the rubber hose, and a strapping machine (14) is arranged on the frame (1) below the packing disk (11), the strapping machine (14) straps the rubber hose roll wound on the packing disk (11) with a strap.

2. An efficient hose baler according to claim 1, characterized in that: The pipe delivery mechanism (2) comprises: A pipe delivery groove (21), the pipe delivery groove (21) is horizontally slidably arranged on the frame (1) along the axial direction of the packing column (13), the width of the pipe delivery groove (21) is only enough to accommodate one rubber hose, and the rubber hose is vertically stacked on the pipe delivery groove (21), and a pipe outlet is opened on the side wall of one end of the pipe delivery groove (21) close to the packing plate (11); A pipe delivery push plate (22), wherein the pipe delivery push plate (22) is slidably disposed on the pipe delivery groove (21) along the length direction of the pipe delivery groove (21); A pipe delivery cylinder (23), wherein the pipe delivery cylinder (23) is arranged on the pipe delivery groove (21) and the piston rod is connected to the pipe delivery push plate (22), and the pipe delivery push plate (22) pushes the rubber hose out of the pipe outlet under the action of the pipe delivery cylinder (23); A moving assembly (24) is arranged on the frame (1) and is used to drive the pipe feeding trough (21) to move horizontally.

3. An efficient hose baler according to claim 2, characterized in that: The moving assembly (24) comprises: A movable screw rod (25), wherein the movable screw rod (25) is rotatably disposed on the frame (1) and is threadedly connected to the pipe delivery groove (21); A moving motor (26), wherein the moving motor (26) is arranged on the frame (1) and the output shaft is connected to the moving screw rod (25).

4. The efficient hose baling machine according to claim 1 is characterized by: The fixing mechanism (3) comprises: A first fixing plate (31), the first fixing plate (31) being arranged on the packaging tray (11); A second fixing plate (32), the second fixing plate (32) is rotatably arranged on the packing plate (11), the rotation point of the second fixing plate (32) is located at the center thereof, when the rubber hose moves onto the packing plate (11), the first fixing plate (31) extends into the rubber hose and contacts the inner wall of the rubber hose, and the second fixing plate (32) is located outside the rubber hose; A rotating assembly (33) is arranged on the packing plate (11) and is used to drive the second fixed plate (32) to rotate. Under the action of the rotating assembly (33), the second fixed plate (32) cooperates with the first fixed plate (31) to clamp the side wall of the hose.

5. The efficient hose baling machine according to claim 4 is characterized by: The rotating assembly (33) comprises: A rotating spring (34), wherein the rotating spring (34) is arranged on the first fixing plate (31) and the second fixing plate (32), and the second fixing plate (32) cooperates with the first fixing plate (31) to clamp the side wall of the rubber hose under the action of the rotating spring (34); A rotating cylinder (35) is arranged on the packaging plate (11), a piston rod of the rotating cylinder (35) is connected to the second fixed plate (32), and the rotating cylinder (35) and the rotating spring (34) are respectively located on both sides of the second fixed plate (32).

6. The efficient hose baling machine according to claim 1, characterized in that: The packing tray (11) is provided with a tube discharging mechanism (4) for discharging the packed rubber tube out of the packing tray (11), and the tube discharging mechanism (4) comprises: An outlet cylinder (41), wherein the outlet cylinder (41) is horizontally slidably arranged on the frame (1); A tube outlet plate (42), wherein the tube outlet plate (42) is arranged on a piston rod of a tube outlet cylinder (41); A sliding assembly (43) is arranged on the frame (1) and is used to drive the pipe outlet cylinder (41) to move. Under the action of the sliding assembly (43), the pipe outlet cylinder (41) drives the pipe outlet plate (42) to be inserted between the rubber hose and the packing plate (11).

7. An efficient hose baling machine according to claim 6, characterized in that: The sliding assembly (43) comprises: A sliding block (44), the sliding block (44) is slidably arranged on the frame (1) in a direction approaching or moving away from the packaging plate (11), and the outlet cylinder (41) is arranged on the sliding block (44); A sliding screw rod (45), wherein the sliding screw rod (45) is rotatably arranged on the frame (1) and is threadably connected to the sliding block (44); A sliding motor (46), wherein the sliding motor (46) is arranged on the frame (1) and the output shaft is connected to the sliding screw rod (45).