Film winding machine

Abstract

The utility model discloses a film winding machine which comprises a cantilever lifting mechanism, the cantilever lifting mechanism comprises a stand column and a cantilever, and the stand column and the cantilever are rotationally connected to a first connecting position; the push rod assembly and the cantilever are connected to a second connecting position, and the push rod assembly is used for driving the cantilever to rotate relative to the stand column; the elastic power assisting structure is connected with the cantilever at a third connecting position, and the elastic power assisting structure provides rotation assisting power for the cantilever; and the second connecting part and the third connecting part are respectively positioned on two sides of the first connecting part. The elastic assistance mechanism provides rotation assistance for the cantilever, so that the transmission efficiency is improved, the thrust is improved, and the movement response speed of the cantilever is further increased.

Description

Technical Field

[0001] This application relates to the technical field of wrapping equipment, and more particularly to a wrapping machine. Background Technology

[0002] Cantilever stretch wrapping carts (also known as stretch wrapping machines) are widely used in logistics, packaging, and other industries due to their flexible application, simple operation, and convenient maintenance. Cantilever stretch wrapping carts are typically equipped with a traveling mechanism, such as wheels with a drive motor, to move the cart around the goods for packaging. The equipment also includes an upright column with a cantilever pivotally mounted on it. A push rod assembly is connected to the cantilever, and a film roll storage box is attached to the end of the cantilever furthest from the column to hold the film rolls. When the push rod assembly retracts or moves away from the cantilever, it lowers the cantilever, causing the film roll storage box to descend; conversely, when the push rod assembly extends or moves towards the cantilever, it raises the cantilever, causing the film roll storage box to rise. In this way, cantilever stretch wrapping carts can adapt to goods of varying heights, making them suitable for a wide range of applications.

[0003] However, due to the high frequency of use of the push rod assembly in actual use of the cantilever wrapping truck, it suffers from high power consumption and short driving range. Utility Model Content

[0004] Existing cantilever wrapping machines suffer from high power consumption and short operating range.

[0005] A wrapping machine is provided, including a cantilever lifting mechanism, the cantilever lifting mechanism comprising:

[0006] A column and a cantilever, wherein the column and the cantilever are rotatably connected at a first connection point;

[0007] A push rod assembly is connected to the cantilever at a second connection point, and the push rod assembly is used to drive the cantilever to rotate relative to the column;

[0008] An elastic assist structure is connected to the cantilever at a third connection point, and the elastic assist structure provides rotational assistance to the cantilever.

[0009] The second connection and the third connection are located on both sides of the first connection.

[0010] In the aforementioned wrapping machine, the third connection point is the end of the cantilever.

[0011] In the aforementioned wrapping machine, one end of the elastic assist structure is connected to the cantilever at the third connection point, and the other end is connected to the first fixed seat. The first fixed seat is located at or near the bottom area of ​​the column.

[0012] In the aforementioned wrapping machine, the column includes a first side biased towards the second connection and a second side offset from the second connection, and the distance between the third connection and the second side of the column is less than the distance between the third connection and the first side of the column.

[0013] In the aforementioned wrapping machine, the cantilever includes a cantilever body and an assist plate. The first end of the assist plate is directly or indirectly fixedly connected to the end of the cantilever body. The second end of the assist plate extends axially along the cantilever body to the rear side of the column. The third connection is located at the end of the second end of the assist plate. The rear side of the column refers to the side offset from the second connection.

[0014] In the aforementioned wrapping machine, the cantilever lifting mechanism further includes a limiting member and a first rotating shaft. One end of the limiting member is fixedly connected to the end of the cantilever body, and the other end is rotatably connected to the column through the first rotating shaft.

[0015] The first end of the assist plate is fixedly connected to the limiting member, and the second end of the assist plate is connected to the elastic assist structure. The assist plate is rotatably engaged with the first rotating shaft, and the rotation position is located between the first end and the second end of the assist plate.

[0016] In the aforementioned wrapping machine, the cantilever lifting mechanism further includes a first bearing seat and a first bearing. The first bearing seat is mounted on the column, and the first bearing is fixed to the first bearing seat. The first rotating shaft passes through the first bearing and then sequentially passes through the limiting member and the assist plate, and rotates in cooperation with the limiting member and the assist plate.

[0017] In the aforementioned wrapping machine, the push rod assembly includes: a second bearing seat, a ball screw, a screw nut, and a drive assembly. The second bearing seat is hinged to the column or the first fixed seat. One end of the ball screw is hinged to the cantilever. The screw nut is rotatably disposed within the second bearing seat. The ball screw and the screw nut are threadedly connected. The drive assembly drives the screw nut to rotate, and the ball screw moves axially, thereby raising and lowering the cantilever.

[0018] The aforementioned wrapping machine, wherein the drive assembly includes: a motor, a first sprocket, a second sprocket, and a chain; the motor is fixed on the second bearing seat; the motor is connected to the first sprocket via a drive mechanism; the second sprocket is mounted on the lead screw nut; and the first sprocket and the second sprocket are connected via a chain drive mechanism.

[0019] The push rod assembly further includes: a nut seat and a second bearing, the nut seat being disposed between the second bearing seat and the lead screw nut, the second bearing seat and the nut seat being rotatably engaged by the second bearing, and the lead screw nut being fixed inside the nut seat;

[0020] The ball screw is provided with a first limit detection block and a second limit detection block at both ends, and the second bearing seat is provided with a first limit switch and a second limit switch. When the first limit switch detects the first limit detection block or the second limit switch detects the second limit detection block, the drive assembly stops driving.

[0021] The positive effects of the above technical solution compared with the existing technology are:

[0022] This application features an elastic assist structure that provides rotational assistance to the cantilever, thereby improving transmission efficiency, increasing thrust, and further accelerating the cantilever's movement response speed. It can also further reduce energy consumption and increase the driving range of the wrapping truck, thus having significant economic value. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the wrapping machine of this application;

[0024] Figure 2 This is a schematic diagram of a structure of an embodiment of the wrapping machine of this application, in which the first fixed base is located in the bottom region of the column;

[0025] Figure 3 This is a schematic diagram of a structural embodiment of the connection between the cantilever body and the column in the wrapping machine of this application;

[0026] Figure 4 This is a schematic diagram of a structural embodiment of the connection between the cantilever body and the column in the wrapping machine of this application;

[0027] Figure 5 This is a schematic diagram of the push rod assembly in an embodiment of the wrapping machine of this application;

[0028] Figure 6 This is a structural cross-sectional view of an embodiment of the push rod assembly in the wrapping machine of this application;

[0029] Figure 7 This is a schematic diagram of a structure of an embodiment of the connection between the ball screw and the first connecting seat in the wrapping machine of this application;

[0030] Figure 8 This is a schematic diagram of an embodiment of the installation structure of the elastic assist structure in the wrapping machine of this application;

[0031] Figure 9 This is a schematic diagram of an embodiment of the connection between the elastic assist structure and the assist plate in the wrapping machine of this application;

[0032] Figure 10 This is a schematic diagram of an embodiment of the connection between the elastic assist structure and the first fixed seat in the wrapping machine of this application;

[0033] Figure 11 This is a schematic diagram of an embodiment of the wrapping machine of this application in which the ball screw extends into the first fixed seat;

[0034] Figure 12 This is a schematic diagram of the overall structure of an embodiment of the film-wrapping vehicle of this application;

[0035] In the attached diagram: 1. Column; 2. Cantilever; 3. Push rod assembly; 4. Elastic assist structure; 6. Assist plate; 7. Drive assembly; 8. Vehicle body; 9. First fixed seat; 10. Film roll storage box; 11. First connection; 12. Second connection; 13. Third connection; 21. Cantilever body; 31. Second bearing seat; 32. Ball screw; 33. Screw nut; 34. Nut seat; 35. Second bearing; 36. Bearing bracket; 37. Second connecting seat; 38. 51. First connecting seat; 52. First rotating shaft; 53. Limiting component; 54. First bearing seat; 55. C-type slot component; 56. Second rotating shaft; 57. Cantilever sub-body; 71. Motor; 72. First sprocket; 73. Second sprocket; 74. Chain; 75. Reducer; 81. First limit detection block; 82. Second limit detection block; 83. First limit switch; 84. Second limit switch; 91. Base plate; 92. Double ear plate; 93. Ring buckle. Detailed Implementation

[0036] The embodiments of this application will be further described below with reference to the accompanying drawings and specific examples, but these descriptions are not intended to limit the scope of the embodiments of this application.

[0037] like Figures 1 to 12 As shown, in one embodiment, the wrapping machine includes a cantilever lifting mechanism, which includes: a column 1, a cantilever 2, a push rod assembly 3, and an elastic assist structure 4. The column 1 and the cantilever 2 are rotatably connected at a first connection 11. The push rod assembly 3 is connected to the cantilever 2 at a second connection 12. The push rod assembly 3 is used to drive the cantilever 2 to rotate relative to the column. The elastic assist structure 4 is connected to the cantilever 2 at a third connection 13. The elastic assist structure 4 provides rotational assistance to the cantilever 2. The second connection 12 and the third connection 13 are located on both sides of the first connection 11.

[0038] The push rod assembly 3 is rotatably connected to the cantilever 2 at the second connection point 12. The push rod assembly 3 can be an electric push rod. In some embodiments, the push rod assembly 3 is one of a gas spring type telescopic push rod, a hydraulic type telescopic push rod, a direct drive sprocket chain type push rod, or a ball screw type push rod. When the push rod assembly 3 is working, its telescopic movement drives the cantilever 2 to rotate around the first connection point 11, thereby driving the film roll storage box 10 to rise and fall.

[0039] The second connection 12 and the third connection 13 are located on either side of the first connection 11. The second connection 12 is located in front of the first connection 11, i.e., on the side of the cantilever 2 extending outwards. The second connection 12 can be located on the side of the cantilever 2 closest to the first connection 11. The second connection 12 can be located at the bottom, inside, or on the side of the cantilever 2. The third connection 13 is located behind the first connection 11, i.e., on the side of the root of the cantilever 2.

[0040] In some implementations, such as Figure 1-3 A first connecting seat 38 is provided at the bottom of the cantilever 2, and one end of the push rod assembly 3 is hinged to the first connecting seat 38. The first connecting seat 38 can be fixedly connected to the cantilever 2 using bolts, pins, rivets, welding, or other connection methods, providing a stable hinge point for the push rod assembly 3. The first connecting seat 38 can be a double-ear type hinge seat, with an ear plate on each side, forming a symmetrical structure. Both ear plates have hinge holes. One end of the push rod assembly 3 has a radial through hole. Aligning the radial through hole at the end of the push rod assembly 3 with the hinge hole on the ear plate of the first connecting seat 38, and inserting a rotating shaft, allows the push rod assembly 3 to rotate relative to the first connecting seat 38. By using a double-ear type hinge seat, the swaying of the push rod assembly 3 can be reduced, thereby improving the stability and vibration resistance of the entire cantilever lifting mechanism.

[0041] Optionally, the outer end face of the radial through hole at the end of the push rod assembly 3 is a plane. In one embodiment, the end of the lead screw of the push rod assembly 3 is rotatably connected to the first connecting seat 38. The lead screw is cylindrical in shape, and its end is provided with a cantilever connection portion. One side of the cantilever connection portion and the other side radially opposite to it are planes. The outer end faces of the two openings of the radial through hole are respectively located on the two plane sides of the cantilever connection portion. That is, the two outer end faces of the radial through hole at the end of the push rod assembly 3 are planes, which facilitates a tight fit with the ear plates located on both sides of the first connecting seat 38 to form a stable rotational connection. In another embodiment, the cantilever connection portion at the end of the push rod assembly 3 is a connecting plate welded or screwed to the end. The two sides of the connecting plate are planes. The radial through hole at the end of the push rod assembly 3 is provided on the connecting plate to tightly fit with the ear plates located on both sides of the first connecting seat 38.

[0042] Optionally, to enhance the stability of the connection between the push rod assembly 3 and the cantilever 2, a washer is provided between the outer end face of the radial through hole at the end of the push rod assembly 3 and the hinge hole on the first connecting seat 38.

[0043] The elastic assist structure 4 employs a damping element. When the cantilever 2 is in a lower position, the elastic assist structure 4 stores elastic potential energy, providing an upward rotational assist for the cantilever 2. In some embodiments, the elastic assist structure 4 includes a tension spring. When the cantilever 2 is in a lower position, the tension spring is stretched, generating a contracting elastic force, providing an upward rotational assist for the cantilever 2, thereby reducing the load on the push rod assembly 3 and reducing its energy consumption. In other embodiments, the elastic assist structure 4 includes a balancer, whose elastic force provides an upward rotational assist for the cantilever 2.

[0044] By setting up the elastic assist structure 4, rotational assistance is provided to the cantilever 2, reducing the load on the push rod assembly 3, thereby reducing the output power, reducing the power consumption of the drive motor, and increasing the equipment's range.

[0045] In some embodiments, the third connection point 13 is the end of the cantilever 2 near the column 1, that is, the connection point between the cantilever 2 and the elastic assist structure 4 is located at the end of the cantilever 2 near the column 1, so that the force of the elastic assist structure 4 can be directly applied to the farthest end of the cantilever 2, thereby generating the maximum torque when the cantilever 2 rotates and obtaining a better assist effect. The end of the cantilever 2 can be directly connected to the elastic assist structure 4; the cantilever 2 can be connected to the elastic assist structure 4 through a connecting seat or ear plate. The connecting seat or ear plate can be designed in various shapes, such as circular, square, or other irregular shapes, and has holes. The top of the elastic assist structure 4 is provided with a hook for hooking into the holes.

[0046] like Figure 12 In the above embodiment, a film roll storage box 10 is installed at the end of the cantilever 2 away from the column 1. The film wrapping vehicle in this application adopts the cantilever lifting structure described above, which can reduce energy consumption and increase the driving range of the film wrapping vehicle, and has significant economic value.

[0047] In some embodiments, one end of the elastic assist structure 4 is connected to the cantilever 2 at the third connection point 13, and the other end is connected to the first fixing seat 9, which is located in the bottom area of ​​the column 1.

[0048] The first fixing seat 9 is located at the bottom of the column 1. That is, the first fixing seat 9 is a fixing seat located at the bottom of the column 1. It can be a ring extending outward from the side of the bottom of the column 1, or it can be a fixing plate connected to the column 1 by welding, bolting or other means. The fixing plate is provided with a connection structure that cooperates with the elastic assist structure 4. For example, the end of the elastic assist structure 4 is provided with a hook, and the fixing plate is provided with a ring.

[0049] In other embodiments, one end of the elastic assist structure 4 is connected to the cantilever 2 at the third connection point 13, and the other end is connected to the first fixed seat 9, which is located near the bottom area of ​​the column 1.

[0050] The first fixing seat 9 is located near the bottom area of ​​the column 1. The first fixing seat 9 and the column 1 may not be connected. The first fixing seat 9 is an independent fixing seat near the bottom of the column 1.

[0051] In some implementations, such as Figure 8 , 10 11. The first fixing base 9 includes a base plate 91 and double ear plates 92 extending upward in a direction perpendicular to the base plate 91. One end of the elastic assist structure 4 is connected to the base plate 91. A ring buckle 93 can be fixedly installed on the base plate 91 and connected to the hook at the end of the elastic assist structure 4. The base plate 91 is flat and fixed to the wrapping truck base. The base plate 91 can be connected to the wrapping truck base by screws, or a part of the wrapping truck base can be used as the base plate 91, or a plate welded to the wrapping truck base can be used as the base plate 91. The double ear plates 92 are two symmetrically arranged plates perpendicular to the base plate 91. One end of them is fixed to the base plate 91 by welding or other firm connection methods, and the other end extends upward in a direction perpendicular to the base plate 91, forming a door-like frame. The bottom of the column 1 is fixed to the top of the double ear plates 92 of the first fixing base 9. The two plates of the double-ear plate 92 form a receiving space for the lead screw of the push rod assembly 3 to pass through.

[0052] In some embodiments, the column 1 includes a first side biased toward the second connection 12 and a second side deviated from the second connection 12, and the distance between the third connection 13 and the second side of the column 1 is less than the distance between the third connection 13 and the first side of the column 1.

[0053] The first connection 11 is located on the first side of the column 1, or close to the first side of the column 1.

[0054] Among them, such as Figure 2 The column 1 is biased toward the first side of the second connection 12, that is, the first side of the column 1 refers to the side of the column 1 facing the cantilever extension direction, which is also the side where the main body of the cantilever 2 is located. The column 2 is biased toward the second side of the second connection 12, that is, the other side that is radially opposite to the first side. The connection between the elastic assist structure 4 and the cantilever 2—the third connection 13—is closer to the second side of the column 1. Under this arrangement, the length between the rotational connection point (first connection 11) of the column 1 and the cantilever 2 and the third connection 13 is relatively long, so that the elastic assist structure 4 can provide greater assistance.

[0055] In some embodiments, such as Figure 3The cantilever 2 includes a cantilever body 21 and an assist plate 6. The first end of the assist plate 6 is directly or indirectly fixedly connected to the end of the cantilever body 21. The second end of the assist plate 6 extends axially along the cantilever body 21 to the rear side of the column 1. The third connection 13 is located at the end of the second end of the assist plate 6. The rear side of the column 1 refers to the side that is offset from the second connection 12.

[0056] In this article, the front side of column 1 refers to the side of column 1 facing the direction of cantilever extension, and the rear side of column 1 refers to the other side that is radially opposite to the first side of column 1.

[0057] In one embodiment, the booster plate 6 and the cantilever body 21 are an integral structure, which has higher overall rigidity and strength, can withstand greater loads and impacts, is less prone to loosening or deformation, has better stability, reduces maintenance, does not require disassembly between the two, makes the installation process simpler and faster, and reduces the overall weight.

[0058] In another embodiment, the booster plate 6 is fixed to the cantilever body 21 by fasteners such as screws or bolts, which provides greater flexibility. The cantilever body 21 or the booster plate 6 can be replaced separately without replacing the entire cantilever structure, thus reducing maintenance costs, processing difficulty, and processing costs.

[0059] The rear side of the column 1 refers to the side that is off from the second connection 12, that is, relative to the connection position between the cantilever body 21 and the push rod assembly 3. The second end of the assist plate 6 extends to the other side of the column 1 to obtain a more reasonable lever arm length, thereby providing effective assistance when the cantilever 2 moves and reducing the burden on the push rod assembly 3.

[0060] Furthermore, the second end of the assist plate 6 has a first mounting hole, the first fixing seat 9 has a second mounting hole, and hooks are respectively provided at both ends of the elastic assist structure 4. One end of the elastic assist structure 4 is hung on the first mounting hole and the other end is hung on the second mounting hole. With the above structure, the elastic assist structure 4 can be quickly installed and easily disassembled without complicated tools or steps, making it easy to replace and maintain.

[0061] For further embodiments of this application, please refer to... Figure 3-4 As shown, the cantilever lifting mechanism also includes a limiting member 52 and a first rotating shaft 51. One end of the limiting member 52 is fixedly connected to the end of the cantilever body 21, and the other end is rotatably connected to the column 1 through the first rotating shaft 51.

[0062] Furthermore, the first end of the assist plate 6 is fixedly connected to the limiting member 52, and the second end of the assist plate 52 is connected to the elastic assist structure 4. The assist plate 6 is rotatably engaged with the first rotating shaft 51, and the rotation position is located between the first end and the second end of the assist plate 6.

[0063] The limiting member 52 of this application also rotates in conjunction with the first rotating shaft 51, so that the cantilever 2 rotates smoothly relative to the column 1.

[0064] The cantilever lifting mechanism of the wrapping machine of this application also includes a first bearing seat 53 and a first bearing 54. The first bearing seat 53 is installed on the column 1, and the first bearing 54 is fixed to the first bearing seat 53. The first rotating shaft 51 passes through the first bearing 54 and then passes through the limiting member 52 and the assist plate 6 in sequence, and rotates with the limiting member 52 and the assist plate 6.

[0065] The cooperation between the first bearing housing 53 and the first bearing 54 makes the cantilever 2 rotate more smoothly.

[0066] Furthermore, the limiting member 52 includes two corresponding limiting plates with a receiving space between them. A portion of the first bearing seat 53 extends into and is limited in the receiving space, and the end of the cantilever body 21 also extends into the receiving space. The two limiting plates are respectively fixed to both sides of the cantilever body 21, thereby preventing the cantilever 2 from swaying left and right.

[0067] In addition, the first bearing 54 is also confined within the receiving space.

[0068] In some embodiments of this application, the cantilever lifting mechanism further includes a cantilever sub-body 57, a C-shaped slot 55, and a second rotating shaft 56. The cantilever sub-body 57 is arranged side by side with the cantilever body 21. The C-shaped slot 55 is installed on the column 1. The cantilever sub-body 57 extends into the slot of the C-shaped slot 55 and is rotatably connected to the C-shaped slot 55 through the second rotating shaft 56.

[0069] Furthermore, the C-shaped slot 55 can prevent the cantilever 2 from swaying left and right.

[0070] Furthermore, the film roll storage box 10 is mounted on the cantilever body 21 and the cantilever sub-body 57.

[0071] In a further embodiment of this application, the push rod assembly 3 includes: a second bearing seat 31, a ball screw 32, a screw nut 33, and a drive assembly 7. The second bearing seat 31 is hinged to the column 1 or the first fixed seat 9. One end of the ball screw 32 is hinged to the cantilever 2. The screw nut 33 is rotatably disposed in the second bearing seat 31. The ball screw 32 and the screw nut 33 are threadedly connected. The drive assembly 7 drives the screw nut 33 to rotate, and the ball screw 32 moves axially, thereby driving the cantilever 2 to rise and fall.

[0072] In a further embodiment of this application, the drive assembly 7 includes: a motor 71, a first sprocket 72, a second sprocket 73, and a chain 74. The motor 71 is fixed on the second bearing seat 31 and is connected to the first sprocket 72 in a transmission connection. The second sprocket 73 is mounted on the lead screw nut 33, and the first sprocket 72 and the second sprocket 73 are connected in a transmission connection through the chain 74.

[0073] In a further embodiment of this application, the ball screw type push rod further includes: a nut seat 34 and a second bearing 35. The nut seat 34 is disposed between the second bearing seat 31 and the screw nut 33. The second bearing seat 31 and the nut seat 34 are rotatably engaged by the second bearing 35. The screw nut 33 is fixed in the nut seat 34.

[0074] Furthermore, the drive assembly 7 also includes a reducer 75, a motor 71, a first sprocket 72, a chain 74, a second sprocket 73, a lead screw nut 33, and a ball screw 32, which are connected in sequence for transmission.

[0075] Furthermore, after the drive screw nut 33 rotates, since the screw nut 33 is threadedly connected to the ball screw 32 and the screw nut 33 is fixed along its axial direction, the ball screw 32 moves along the axial direction of the screw nut 33, thereby driving the cantilever 2 to rise and fall.

[0076] Furthermore, the second sprocket 73 is mounted on the nut seat 34.

[0077] Furthermore, a bearing bracket 36 is provided on the bearing housing 31, and the motor 71 and the second limit switch 84 are both mounted on the bearing bracket 36.

[0078] Furthermore, the side wall of the column 1 is provided with a second connecting seat 37, and the side wall of the cantilever 2 is provided with a first connecting seat 38. The second bearing seat 31 is rotatably connected to the second connecting seat 37, and one end of the ball screw 32 is rotatably connected to the first connecting seat 38.

[0079] The ball screw in the push rod assembly of this application has low wear and long service life with proper maintenance, reducing the frequency of maintenance and replacement. The ball screw is easy to integrate with control systems such as servo motors to achieve precise speed and position control. The ball screw has no slippage, ensuring accurate transmission and eliminating slippage problems. Moreover, the structure is compact and occupies little space. The ball screw structure also improves transmission efficiency and reduces energy consumption, which has significant economic value.

[0080] In a further embodiment of this application, the two ends of the ball screw 32 are respectively provided with a first limit detection block 81 and a second limit detection block 82, and the second bearing seat 31 is provided with a first limit switch 83 and a second limit switch 84. When the first limit switch 83 detects the first limit detection block 81 or the second limit switch 84 detects the second limit detection block 82, the drive assembly 7 stops driving.

[0081] Furthermore, this application can limit the rotation angle of the cantilever 2 through the above-mentioned detection structure.

[0082] like Figure 12As shown in the illustration, this application presents an embodiment of a wrapping machine, which also includes a vehicle body 8, with a cantilever lifting mechanism mounted on the vehicle body 8.

[0083] Furthermore, the first fixed seat 9 is installed on the vehicle body 8.

[0084] The bottom of the column 1 is mounted on the vehicle body 8, or the bottom of the column 1 is mounted on the first fixed seat 9.

[0085] This application combines the elastic assist structure 4 and the ball screw structure in the same cantilever lifting mechanism of the wrapping machine, resulting in better transmission efficiency, further reducing energy consumption and increasing the driving range of the wrapping vehicle.

[0086] The above description is only a preferred embodiment of this application and does not limit the implementation method and protection scope of this application. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of this application should be included within the protection scope of this application.

Claims

1. A wrapping machine, comprising a cantilever lifting mechanism, characterized in that, The cantilever lifting mechanism includes: A column and a cantilever, wherein the column and the cantilever are rotatably connected at a first connection point; A push rod assembly is connected to the cantilever at a second connection point, and the push rod assembly is used to drive the cantilever to rotate relative to the column; An elastic assist structure is connected to the cantilever at a third connection point, and the elastic assist structure provides rotational assistance to the cantilever. The second connection and the third connection are located on both sides of the first connection.

2. The wrapping machine according to claim 1, characterized in that, The third connection point is the end of the cantilever.

3. The wrapping machine according to claim 1 or 2, characterized in that, One end of the elastic assist structure is connected to the cantilever at the third connection point, and the other end is connected to the first fixed seat. The first fixed seat is located at or near the bottom area of ​​the column.

4. The wrapping machine according to claim 3, characterized in that, The column includes a first side biased towards the second connection and a second side deviated from the second connection, and the distance between the third connection and the second side of the column is less than the distance between the third connection and the first side of the column.

5. The wrapping machine according to claim 2, characterized in that, The cantilever includes a cantilever body and an assist plate. The first end of the assist plate is directly or indirectly fixedly connected to the end of the cantilever body. The second end of the assist plate extends axially along the cantilever body to the rear side of the column. The third connection is located at the end of the second end of the assist plate. The rear side of the column refers to the side that is offset from the second connection.

6. The wrapping machine according to claim 5, characterized in that, The cantilever lifting mechanism also includes a limiting member and a first rotating shaft. One end of the limiting member is fixedly connected to the end of the cantilever body, and the other end is rotatably connected to the column through the first rotating shaft. The first end of the assist plate is fixedly connected to the limiting member, and the second end of the assist plate is connected to the elastic assist structure. The assist plate is rotatably engaged with the first rotating shaft, and the rotation position is located between the first end and the second end of the assist plate.

7. The wrapping machine according to claim 6, characterized in that, The cantilever lifting mechanism further includes a first bearing seat and a first bearing. The first bearing seat is mounted on the column, and the first bearing is fixed to the first bearing seat. The first rotating shaft passes through the first bearing and then passes through the limiting member and the assist plate in sequence, and rotates with the limiting member and the assist plate.

8. The wrapping machine according to claim 3, characterized in that, The push rod assembly includes: a second bearing housing, a ball screw, a screw nut, and a drive assembly. The second bearing housing is hinged to the column or the first fixed base. One end of the ball screw is hinged to the cantilever. The screw nut rotates within the second bearing housing. The ball screw and the screw nut are threadedly connected. The drive assembly drives the screw nut to rotate. The ball screw moves axially, causing the cantilever to rise and fall.

9. The wrapping machine according to claim 8, characterized in that, The drive assembly includes: a motor, a first sprocket, a second sprocket, and a chain. The motor is fixed on the second bearing seat and is driven by the first sprocket. The second sprocket is mounted on the lead screw nut, and the first sprocket and the second sprocket are driven by the chain. The push rod assembly further includes: a nut seat and a second bearing, the nut seat being disposed between the second bearing seat and the lead screw nut, the second bearing seat and the nut seat being rotatably engaged by the second bearing, and the lead screw nut being fixed inside the nut seat; The ball screw is provided with a first limit detection block and a second limit detection block at both ends, and the second bearing seat is provided with a first limit switch and a second limit switch. When the first limit switch detects the first limit detection block or the second limit switch detects the second limit detection block, the drive assembly stops driving.

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