Winding film packer

Abstract

The utility model provides a wrapping film packer. The wrapping film packer comprises a main body frame, a fixing frame, a lifting mechanism and a winding drum fixing mechanism. The fixing frame is slidably arranged in the body frame and can ascend and descend relative to the body frame. The winding drum fixing mechanism is arranged in the fixing frame and used for fixing a winding film winding drum. The lifting mechanism is arranged between the fixing frame and the main body frame so that the fixing frame can be automatically lifted when the winding film winds an object, and the fixing frame can descend to the initial position under the gravity of the fixing frame after winding is completed. The wrapping film packaging machine can be flexibly suitable for wrapping film packaging operation of various types of products, is small in occupied area, flexible in operation mode, free of power and energy-saving, and meanwhile has the advantages that the wrapping film packaging machine is easy to operate, adjustment of the cutting height and the number of packaging turns can be completed by non-professionals, rapid switching of packaging of different products can be achieved, and the packaging efficiency is improved. And compared with other automatic equipment, the cost is saved by more than 80%.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a low-cost stretch film packaging machine. Background Art

[0002] Stretch film packaging is a common operation for manufacturers across various sectors, primarily ensuring the safety of packaged objects during transportation and storage. This process is largely manual, requiring the packager to bend over and continuously rotate the film around the packaged object. Each bundle of film can weigh between 5 and 10 kg, resulting in high labor intensity and low efficiency.

[0003] To address the issues associated with manual stretch film handling, automated stretch film packaging devices have emerged on the market. However, these devices primarily utilize pallet-type wrapping equipment, requiring a turntable, lifting columns, motors, electrical boxes, and chains. These devices are not only expensive but also require at least two fork pallet positions, limiting their widespread adoption by businesses. Furthermore, the manufacturing industry experiences rapid product updates and a wide variety of materials. Stretch film packaging devices must be able to adjust to the circumference of the object being packaged, the number of layers, and the height of the package. However, existing stretch film packaging devices lack these capabilities.

[0004] Therefore, it is urgent to develop a stretch film baler to meet all the above needs. Utility Model Content

[0005] The purpose of the utility model is to provide a low-cost stretch film baling machine to solve the technical problems in the prior art of stretch film baling devices being large in size, complex in structure, high in cost, and unable to be adjusted as needed.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The utility model provides a stretch film baler, comprising a main frame, a fixing frame, a lifting mechanism, and a roll fixing mechanism; wherein:

[0008] The fixing frame is slidably arranged in the main frame and can be raised and lowered relative to the main frame;

[0009] The roll fixing mechanism is arranged in the fixing frame to fix the stretch film roll;

[0010] The lifting mechanism is arranged between the fixing frame and the main frame to automatically lift the fixing frame when the stretch film is wrapped around the article and to lower the fixing frame to its initial position under its own weight after the wrapping is completed.

[0011] The low-cost stretch film baler of this utility model can be flexibly applied to stretch film baling operations of various types of products, and has a small footprint, flexible operation, no power, and energy saving. At the same time, the stretch film baler of this utility model is also simple to operate, and non-professionals can complete the adjustment of the cutting height and the number of packing circles, and can realize rapid switching of packing different products. Compared with other automated equipment, it saves more than 80% of costs.

[0012] As a further improvement of the present invention, a film cutting mechanism is further included, and the film cutting mechanism is arranged between the fixing frame and the main frame to cut the completed wrapping film.

[0013] As a further improvement of the present invention, the reel fixing mechanism includes a base, a connecting column, a lower positioning member and an upper positioning member;

[0014] The base is rotatably arranged at the bottom of the fixing frame through the connecting column;

[0015] The lower positioning member is mounted on the top of the base;

[0016] The upper positioning piece is movably mounted on the top of the fixing frame.

[0017] As a further improvement of the present invention, the lower positioning member includes a positioning rod, a positioning crossbeam, and a guide member; wherein:

[0018] The positioning rod is vertically arranged on the base;

[0019] The positioning crossbeam is arranged horizontally and connected to the middle part of the positioning rod;

[0020] The guide member is connected to the positioning rod and is located above the positioning crossbeam.

[0021] As a further improvement of the present invention, the upper positioning member includes a support frame, a telescopic driving member, a rotary bearing joint, a positioning support head, and a limiting ring; wherein:

[0022] The support frame is installed on the top of the fixing frame;

[0023] One end of the telescopic driving member is connected to the support frame, and the other end is connected to the positioning support head through the rotary bearing joint;

[0024] The limiting ring is rotatably mounted on the telescopic driving member.

[0025] As a further improvement of the present invention, the lifting mechanism includes a T-shaped rod, a control cable, and a guide pulley; wherein:

[0026] The T-shaped rod is arranged at the bottom of the fixing frame, and the head of the T-shaped rod is connected to the connecting column and can rotate around the axis along with the base;

[0027] The guide pulleys are arranged on the top, side and bottom of the main frame;

[0028] One end of the control cable is connected to the rod portion of the T-shaped rod, and the other end is connected to the top of the fixing frame after passing through the guide pulleys in sequence.

[0029] As a further improvement of the present invention, there are two sets of film cutting mechanisms, which are relatively arranged at two ends of one side of the main frame.

[0030] As a further improvement of the present invention, each of the film cutting mechanisms includes a first cutter, a second cutter, a first cutting arm, a second cutting arm, and a propulsion assembly; wherein:

[0031] The first cutting knife is arranged at the end of the first cutting arm;

[0032] The second cutting knife is arranged at the end of the second cutting arm;

[0033] The first cutting arm is rotatably arranged on the upper part of the main frame;

[0034] The second cutting arm is slidably arranged at the lower part of the main frame;

[0035] The ends of the first cutting arm and the second cutting arm are hinged together;

[0036] The propulsion assembly is arranged on the fixing frame and can push the second cutting arm to rise along the main frame as the fixing frame rises.

[0037] As a further improvement of the present invention, the propulsion assembly includes a crossbar, a contact portion and a pushing portion;

[0038] in:

[0039] The cross bar is slidably arranged on the main frame;

[0040] The contact portion is arranged in the middle of the crossbar and can be in contact and connected with the bottom of the fixing frame;

[0041] The pushing portion is arranged on the outside of the cross bar and can be in contact and connected with the second cutting arm.

[0042] As a further improvement of the present invention, the bottom of the main frame is provided with height-adjustable legs.

[0043] The utility model is an automatic stretch film baler composed of a wheel axle, a slider, a connecting rod, etc. The number of packaging layers and the cutting position can be adjusted according to the diameter and height of the packaged object. It can be used in various stretch film packaging scenarios of large-scale pallet trucks / tool ​​trucks and other materials. It can realize automatic film wrapping and film cutting functions, replace manual actions, reduce labor intensity and improve production efficiency. The stretch film position can be cut according to the height of the material, which is suitable for objects of different heights. A certain number of layers can be wrapped around the bottom of the packaged object to improve the packaging effect. It can automatically recover after completing one packaging and can operate in a cycle. The number of packaging layers can be adjusted according to the circumference of the material, which is suitable for objects of different lengths and widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figure 1 This is a schematic diagram of the overall structure of the utility model stretch film baler;

[0046] Figure 2 This is the main view of the stretch film baler of the utility model;

[0047] Figure 3 This is a side view of the stretch film baler of the utility model;

[0048] Figure 4 This is a top view of the stretch film baler of the utility model;

[0049] Figure 5 This is a schematic diagram of the three-dimensional structure of the main frame of the stretch film baler of the utility model;

[0050] Figure 6 This is the main view of the main frame of the stretch film baler of the utility model;

[0051] Figure 7 This is a side view of the main frame of the stretch film baler of the utility model;

[0052] Figure 8 This is a top view of the main frame of the stretch film baler of the utility model;

[0053] Figure 9 This is a schematic diagram of the three-dimensional structure of the fixing frame in the stretch film baling machine of the utility model;

[0054] Figure 10 This is the main view of the fixing frame in the stretch film baler of the utility model;

[0055] Figure 11 This is a side view of the fixing frame in the stretch film baler of the utility model;

[0056] Figure 12 This is a top view of the fixing frame in the stretch film baler of the utility model;

[0057] Figure 13 This is a three-dimensional structural diagram of the roll fixing mechanism in the stretch film baling machine of the utility model;

[0058] Figure 14 This is a front view of the roll fixing mechanism in the stretch film baler of the utility model;

[0059] Figure 15 This is a side view of the roll fixing mechanism in the stretch film baler of the utility model;

[0060] Figure 16 This is a top view of the roll fixing mechanism in the stretch film baler of the utility model;

[0061] Figure 17 This is a schematic diagram of the three-dimensional structure of the base and the lower positioning member in the reel fixing mechanism of the utility model;

[0062] Figure 18 This is a front view of the base and lower positioning member in the reel fixing mechanism of the utility model;

[0063] Figure 19 It is a side view of the base and the lower positioning member in the reel fixing mechanism of the utility model;

[0064] Figure 20 This is a top view of the base and lower positioning member in the reel fixing mechanism of the utility model;

[0065] Figure 21 This is a schematic diagram of the three-dimensional structure of the film cutting mechanism of the utility model;

[0066] Figure 22 This is the front view of the film cutting mechanism of the utility model;

[0067] Figure 23 It is a side view of the film cutting mechanism of the utility model;

[0068] Figure 24 This is a top view of the film cutting mechanism of the utility model;

[0069] Figure 25 It is a three-dimensional structural schematic diagram of a stretch film reel processed in the stretch film baling machine of the utility model.

[0070] In the figure, 1. main frame; 2. fixing frame; 21. sliding block; 3. lifting mechanism; 31. T-bar; 32. control cable; 33. guide pulley; 4. reel fixing mechanism; 41. base; 42. connecting column; 43. lower positioning member; 431. positioning rod; 432. positioning crossbeam; 433. guide member; 44. upper positioning member; 441. support frame; 442. telescopic driving member; 443. rotating bearing joint; 444. positioning support head; 445. limiting ring; 5. film cutting mechanism; 51. first cutter; 52. second cutter; 53. first cutting arm; 54. second cutting arm; 55. propulsion assembly; 551. cross bar; 552. contact part; 553. pushing part; 56. sleeve slider mechanism; 6. support leg; 7. wrap film reel. DETAILED DESCRIPTION

[0071] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0072] like Figure 1-Figure 25 As shown, the utility model provides a stretch film baler, including a main frame 1, a fixing frame 2, a lifting mechanism 3, and a roll fixing mechanism 4; wherein:

[0073] The fixing frame 2 is slidably disposed within the main frame 1 and can be raised and lowered relative to the main frame 1. Specifically, the fixing frame 2 is slidably disposed within the main frame 1 via 100 mm long sliding blocks 21. To achieve smooth lifting, the sliding blocks 21 are respectively disposed at the top and bottom of the fixing frame 2.

[0074] The roll fixing mechanism 4 is disposed within the fixing frame 2 for fixing the stretch film roll 7. To facilitate the installation of the roll fixing mechanism 4, the top of the fixing frame 2 is open for mounting the roll fixing mechanism 4. A crossbeam is provided in the middle of the bottom of the fixing frame 2 for mounting the lifting mechanism 3. When the stretch film roll 7 is fixed to the roll fixing mechanism 4, the stretch film can be extended from the side of the fixing frame 2 for wrapping and packaging items.

[0075] The lifting mechanism 3 is provided between the fixing frame 2 and the main frame 1 to automatically lift the fixing frame 2 when the stretch film is wrapped around the article and to lower the fixing frame 2 to its initial position under its own weight after the wrapping is completed.

[0076] The low-cost stretch film baler of this utility model can be flexibly applied to stretch film baling operations of various types of products, and has a small footprint, flexible operation, no power, and energy saving. At the same time, the stretch film baler of this utility model is also simple to operate, and non-professionals can complete the adjustment of the cutting height and the number of packing circles, and can realize rapid switching of packing different products. Compared with other automated equipment, it saves more than 80% of costs.

[0077] In order to facilitate cutting of the stretch film, the present embodiment further includes a film cutting mechanism 5 , which is disposed between the fixing frame 2 and the main frame 1 to cut the finished stretch film.

[0078] Furthermore, because the stretch film will extend from the side of the fixing frame 2, the film cutting mechanism 5 is arranged on the side of the fixing frame 2, that is, the direction in which the stretch film extends, so that the stretch film can be cut by the film cutting mechanism 5 after the stretch film is completed.

[0079] As an optional embodiment of the present invention, the reel fixing mechanism 4 includes a base 41, a connecting column 42, a lower positioning member 43 and an upper positioning member 44;

[0080] The base 41 is rotatably mounted on the bottom of the fixed frame 2 via a connecting column 42. Specifically, a rotating bearing joint 443 is provided on the connecting column 42. Connecting rods are provided on both sides of the rotating bearing joint 443, and the connecting rods are connected to the fixed frame 2. The connecting column 42 is connected to the connecting rods via the rotating bearing joint 443, so that the connecting column 42 can rotate around the rotating bearing joint 443 relative to the fixed frame 2. The base 41 is connected to the connecting column 42, so that the base 41 can rotate relative to the fixed frame 2.

[0081] The lower positioning member 43 is installed on the top of the base 41 and is used to limit and fix the bottom of the stretch film reel 7;

[0082] The upper positioning member 44 is movably mounted on the top of the fixing frame 2 and is used to limit and fix the top of the stretch film reel 7 .

[0083] It should be noted that the upper positioning member 44 can be raised and lowered relative to the fixing frame 2, so that the wrapping film roll 7 is first inserted into the lower positioning member 43 and then the upper part is fixed, which facilitates the insertion and removal of the wrapping film roll 7.

[0084] As a further improvement of the present invention, the lower positioning member 43 includes a positioning rod 431, a positioning crossbeam 432, and a guide member 433; wherein:

[0085] The positioning rod 431 is vertically arranged on the base 41 and is used for inserting the winding film reel 7;

[0086] The positioning crossbeam 432 is horizontally arranged and connected to the middle of the positioning rod 431, thereby forming a T-shaped structure to radially limit and fix the wrapping film reel 7;

[0087] The guide member 433 is connected to the positioning rod 431 and is located above the positioning crossbeam 432. In this embodiment, the guide member 433 is a spherical joint, which is used to guide the wrapping film roll 7 when it is inserted.

[0088] The upper positioning member 44 includes a support frame 441, a telescopic driving member 442, a rotating bearing joint 443, a positioning support head 444, and a limiting ring 445; wherein:

[0089] The support frame 441 is installed on the top of the fixed frame 2;

[0090] One end of the telescopic drive member 442 is connected to the support frame 441, and the other end is connected to the positioning support head 444 via a rotating bearing joint 443. Specifically, the telescopic drive member 442 includes a column, a sliding block 21, and a crossbar. The two columns are spaced apart and the tops of the columns are connected to the support frame 441. The two ends of the crossbar are respectively connected to the two columns via sliding blocks 21. The rotating bearing joint 443 is set on the crossbar. The positioning support head 444 is connected to the crossbar via the rotating bearing joint 443, so that the positioning support head 444 can rotate relative to the crossbar around the rotating bearing joint 443.

[0091] The limiting ring 445 is rotatably mounted on the telescopic driving member 442 . Specifically, the limiting ring 445 is rotatably arranged at the ends of the two columns through bearings, thereby guiding and limiting the rotation of the wrapping film reel 7 .

[0092] As an optional embodiment of the present invention, the lifting mechanism 3 includes a T-shaped rod 31, a control cable 32, and a guide pulley 33; wherein:

[0093] The T-shaped rod 31 is arranged at the bottom of the fixing frame 2, and the head of the T-shaped rod 31 is connected to the connecting column 42, and can rotate around the axis along with the base 41; furthermore, the rod portion of the T-shaped rod 31 is used to control the winding of the cable 32, so that when the control cable 32 is continuously wound around the T-shaped rod 31, the fixing frame 2 is automatically lifted, and the lifting process of the fixing frame 2 can be completed without additional power.

[0094] The guide pulleys 33 are arranged on the top, side and bottom of the main frame 1;

[0095] One end of the control cable 32 is connected to the rod portion of the T-shaped rod 31 , and the other end is connected to the top of the fixed frame 2 after passing through the guide pulley 33 in sequence.

[0096] By setting up the lifting mechanism 3, the packaging height of the stretch film can be changed from bottom to top during the packaging process; by changing the rod diameter of the T-shaped rod 31, the transmission ratio can be adjusted to change the lifting speed of the stretch film; when in use, the control rope 32 can be wound around the T-shaped rod 31 several times in advance, and the wound control rope 32 is loosely wound, thereby achieving the goal of winding several layers of film on the bottom before rising to wrap the film.

[0097] The lifting mechanism 3 uses a T-shaped connecting rod to store the control rope during rotation, which reduces the total length of the free part of the control rope, lifts the fixed frame 2, and drives the wrapping film to rise to the film cutting mechanism 5; when the wrapping film is cut by the film cutting mechanism 5, the fixed frame 2 descends under the drive of its own gravity, the control rope is driven, the bottom lifting mechanism 3 reverses, the control rope is released, and the total length of the control rope increases.

[0098] As an optional embodiment of the present invention, there are two sets of film cutting mechanisms 5 , which are relatively arranged at two ends of one side of the main frame 1 .

[0099] By arranging two sets of film cutting mechanisms 5 at both ends of one side of the main frame 1, the stretch film can be cut from both sides. It should be noted that the film cutting mechanism 5 can cut automatically, or the stretch film can be manually pulled to the position of the film cutting mechanism 5 for manual cutting.

[0100] As a further improvement of the present invention, each film cutting mechanism 5 includes a first cutter 51, a second cutter 52, a first cutting arm 53, a second cutting arm 54, and a propulsion assembly 55; wherein:

[0101] The first cutting knife 51 is provided at the end of the first cutting arm 53;

[0102] The second cutting knife 52 is provided at the end of the second cutting arm 54;

[0103] The first cutting arm 53 is rotatably arranged on the upper part of the main frame 1;

[0104] The second cutting arm 54 is slidably disposed on the lower portion of the main frame 1; further, the second cutting arm 54 is slidably disposed on the main frame 1 via a sleeve slider mechanism 56;

[0105] The ends of the first cutting arm 53 and the second cutting arm 54 are hinged together;

[0106] The propulsion assembly 55 is provided on the fixed frame 2 and can push the second cutting arm 54 to rise along the main frame 1 as the fixed frame 2 rises. When the second cutting arm 54 is pushed to move upward, since the first cutting arm 53 can only rotate but cannot be raised or lowered, the angle between the first cutting arm 53 and the second cutting arm 54 becomes smaller, so that the first cutter 51 and the second cutter 52 move forward to approach the stretch film located in the middle of one side of the fixed frame 2, so as to perform automatic film cutting.

[0107] By setting up the film cutting mechanism 5, the automatic film cutting and film wrapping functions can be realized. The propulsion component 55 enables the second cutting arm to slide up and down on the vertical rod, so that the film cutting mechanism 5 can change the angle and thus cut off the pulled out wrapping film.

[0108] As a further improvement of the present invention, the propulsion assembly 55 includes a crossbar 551, a contact portion 552 and a push portion 553; wherein:

[0109] The crossbar 551 is slidably arranged on the main frame 1; Figure 9 As shown, specifically, vertical rods are provided at both ends of the horizontal rod 551, and the tops of the vertical rods are mounted on the sliding block 21 between the fixing frame 2 and the main frame 1;

[0110] The contact portion 552 is disposed in the middle of the crossbar 551 and can be in contact with and connected to the bottom of the fixing frame 2;

[0111] The pushing portion 553 is arranged outside the crossbar 551 and can be in contact with and connected to the second cutting arm 54; specifically, Figure 5 As shown, the pushing portion 553 is an L-shaped structure, with a first end mounted on the sliding block 21 between the main frame 1 and the fixing frame 2, and a second end arranged horizontally.

[0112] As a further improvement of the present invention, a height-adjustable support leg 6 is provided at the bottom of the main frame 1 .

[0113] Furthermore, a power turntable is provided next to the stretch film baler. The material to be packaged is placed on the power turntable, and the material rotates under the rotation of the power turntable. During the rotation process, the stretch film in the stretch film baler is wrapped around the surface of the material for packaging.

[0114] Directions:

[0115] The material is driven to rotate by the power turntable, and the winding film drum 7 is vertically fixed in the reel fixing mechanism 4 inside the fixed frame 2, and rotates as the winding film is consumed, so that the control rope 32 is wound on the T-bar 31, so that the length of the control rope 32 between the T-bar 31 and the top of the fixed frame 2 is reduced, driving the internal fixed frame 2 to rise (thereby achieving packaging materials from bottom to top), and when it is wound to the top, the propulsion assembly 55 is used to push the second cutting arm 54 upward, so that the two cutters are close to each other, contact with the winding film and cut the winding film. After cutting the winding film, the internal fixed frame 2 falls downward to its initial position under its own gravity because there is no tension between the winding film and the material, that is, the lifting force of the fixed frame 2. During the falling process, it is ensured to fall slowly under the action of the control rope 32 (the control rope 32 on the bottom T-bar 31 rotates in the opposite direction, releasing the length, and the fixed frame 2 falls). This device addresses the high labor intensity and low efficiency of stretch film packaging, as well as the potential safety hazards of lumbar muscle strain caused by bending over to pack, and scratches on fingers caused by manually rotating the reel. This new stretch film baler has a simple structure, requires no power, and offers high flexibility, making it suitable for stretch film packaging of various heights and sizes of pallets.

[0116] The stretch film baling machine of the present invention is an automatic stretch film baling machine composed of a lean tube, a connecting roll, an axle, a pulley, a slider, a connecting rod, a nylon rope (control cable), a counterweight and other parts. It has no power devices such as a motor, and uses the gravity of the counterweight and the internal fixed frame 2 and the pulling force of the power turntable to balance. At the same time, it drives the sleeve slider mechanism 56 to form a toggle mechanism, which drives the film cutting mechanism 5 to cut the stretch film, thereby realizing automatic cutting of the stretch film; after the stretch film head is opened with manual assistance, it is hung on the bottom of the plate material, and then the power turntable is activated to drive the stretch film to rotate, and the stretch film reel 7 is driven by the power turntable to rotate. The stretch film reel 7 is vertically fixed on the reel positioning mechanism 4 and rotates with the pulled stretch film, driving the control rope to be wound around the T-bar to achieve length reduction, and driving the fixed frame 2 to rise (thereby realizing packaging of the plate goods from bottom to top). At this time, the control rope is wound by the T-bar at the bottom to form a rope storage of a certain radius. The front film cutting mechanism 5 is driven to approach the middle position to cut the stretch film. After the stretch film is cut, the internal fixed frame 2 returns to the bottom position by gravity (the control cable of the bottom T-shaped rod rotates in the opposite direction, the length is released, and the fixed frame drops), and the reset is completed by gravity; the number of packaging layers and the cutting position can be adjusted according to the diameter and height of the packaged object, and it can be suitable for various stretch film packaging scenarios of large-scale cargo / tooling vehicles and other materials. It can realize automatic film wrapping and film cutting functions, replace manual actions, reduce labor intensity, and improve production efficiency. The stretch film position can be cut according to the height of the material, which is suitable for objects of different heights. A certain number of layers can be wrapped on the bottom of the packaged object to improve the packaging effect. It can automatically recover after completing one packaging, and can operate in a cycle; the number of packaging layers can be adjusted according to the circumference of the material, which is suitable for objects of different lengths and widths.

[0117] The stretch film baler of the present invention is an independently developed LCIA auxiliary device for automatic wrapping and cutting based on the power of an automatic turntable. The device itself has no other power source and electronic equipment, and does not require wiring or programming. The cost is less than 2,000 yuan, which is much lower than that of automated equipment (more than 10 times lower than that of automated equipment). The main mechanism is constructed of a 28mm aluminum alloy hollow tube and assembled through various joints, including horizontal joints, parallel joints, vertical (cross) joints, bearing rotary joints, 28mm tube matching circular sleeves and other parts. Changing the direction of force is usually completed by parts such as control cables, spherical joints and vertical double-bearing wheels, and lifting is completed by sliding blocks.

[0118] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A stretch film baler, characterized in that: It includes a main frame, a fixing frame, a lifting mechanism, and a reel fixing mechanism; wherein: The fixing frame is slidably arranged in the main frame and can be raised and lowered relative to the main frame; The roll fixing mechanism is arranged in the fixing frame to fix the stretch film roll; The lifting mechanism is arranged between the fixing frame and the main frame to automatically lift the fixing frame when the stretch film is wrapped around the article and to lower the fixing frame to its initial position under its own weight after the wrapping is completed.

2. The stretch film baler according to claim 1, characterized in that: It also includes a film cutting mechanism, which is arranged between the fixing frame and the main frame to cut the wound wrapping film.

3. The stretch film baler according to claim 1, characterized in that: The reel fixing mechanism includes a base, a connecting column, a lower positioning member and an upper positioning member; The base is rotatably arranged at the bottom of the fixing frame through the connecting column; The lower positioning member is mounted on the top of the base; The upper positioning piece is movably mounted on the top of the fixing frame.

4. The stretch film baler according to claim 3, characterized in that: The lower positioning member includes a positioning rod, a positioning crossbeam, and a guide member; wherein: The positioning rod is vertically arranged on the base; The positioning crossbeam is arranged horizontally and connected to the middle part of the positioning rod; The guide member is connected to the positioning rod and is located above the positioning crossbeam.

5. The stretch film baler according to claim 3, characterized in that: The upper positioning member includes a support frame, a telescopic driving member, a rotary bearing joint, a positioning support head, and a limiting ring; wherein: The support frame is installed on the top of the fixing frame; One end of the telescopic driving member is connected to the support frame, and the other end is connected to the positioning support head through the rotary bearing joint; The limiting ring is rotatably mounted on the telescopic driving member.

6. The stretch film baler according to claim 3, characterized in that: The lifting mechanism includes a T-shaped rod, a control cable, and a guide pulley; wherein: The T-shaped rod is arranged at the bottom of the fixing frame, and the head of the T-shaped rod is connected to the connecting column and can rotate around the axis along with the base; The guide pulleys are arranged on the top, side and bottom of the main frame; One end of the control cable is connected to the rod portion of the T-shaped rod, and the other end is connected to the top of the fixing frame after passing through the guide pulleys in sequence.

7. The stretch film baler according to claim 2, characterized in that: There are two sets of film cutting mechanisms, which are relatively arranged at two ends of one side of the main frame.

8. The stretch film baler according to claim 7, characterized in that: Each of the film cutting mechanisms includes a first cutter, a second cutter, a first cutting arm, a second cutting arm, and a propulsion assembly; wherein: The first cutting knife is arranged at the end of the first cutting arm; The second cutting knife is arranged at the end of the second cutting arm; The first cutting arm is rotatably arranged on the upper part of the main frame; The second cutting arm is slidably arranged at the lower part of the main frame; The ends of the first cutting arm and the second cutting arm are hinged together; The propulsion assembly is arranged on the fixing frame and can push the second cutting arm to rise along the main frame as the fixing frame rises.

9. The stretch film baler according to claim 8, characterized in that: The propulsion assembly includes a crossbar, a contact portion, and a push portion; wherein: The cross bar is slidably arranged on the main frame; The contact portion is arranged in the middle of the crossbar and can be in contact and connected with the bottom of the fixing frame; The pushing portion is arranged on the outside of the cross bar and can be in contact and connected with the second cutting arm.

10. The stretch film baler according to claim 1, characterized in that: The bottom of the main frame is provided with legs with adjustable height.

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