Improved automatic film wrapping machine

Abstract

The present application relates to automatic film winding machine technical field, especially in kind of improved automatic film winding machine, including base, film winding device, rotating device, corner pushing device and auxiliary clamping device. The existing box type goods stacking and winding film packaging is usually artificial separate stacking and winding film, and the film winding efficiency is low, and there is no function of simultaneously winding multiple packaging corner guards after the box type goods stacking. The film winding device, rotating device, corner pushing device and auxiliary clamping device used in the application can be installed with right angle corner guard for film winding packaging to prevent the goods from being impacted, extruded or damaged during transportation and handling. The four right angle corner guards can be pushed to the box type goods for clamping, which improves the efficiency of installing right angle corner guard and avoids the installed right angle corner guard from tilting and falling. The box type goods can also be compacted to avoid the problem of tilting and scattering of the box type goods during rotating film winding, and the film winding and packaging efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic film winding machines, in particular to an improved automatic film winding machine. BACKGROUND

[0002] The automatic film winding machine is also called a wrapping machine or a film wrapping machine, and is an indispensable machine in the packaging machinery. In order to meet the packaging requirements of cargo containerization storage, transportation and mechanized loading and unloading operations, it is widely used in foreign trade exports, food and beverages, packaging, papermaking, dyes, plastic chemical industry, glass ceramics, mechanical and electrical castings and other products, which can not only improve production efficiency, but also prevent damage to goods during the handling process, and also play a role in dustproof, moistureproof and clean.

[0003] The existing box type cargo stacking and winding film packaging is usually manually stacked and wound with film alone, the film winding efficiency is low, and the two connected box type cargos are not locked and protected, resulting in low fixing force between the box type cargos, which is easy to break the film and cause the box type cargos to scatter and fall when impacted, and the box type cargos do not have the function of installing multiple packaging corner protectors at the same time after stacking, which is easy to cause the goods to slide, tip over or collapse during transportation, resulting in loss and safety risk of the goods, and the box type cargos may directly scatter and fall when impacted by external force, which has the risk of corner wear, breakage and damage to the goods. SUMMARY

[0004] The technical problem to be solved: the improved automatic film winding machine can solve the above-mentioned problems.

[0005] Technical scheme: In order to achieve the above-mentioned purpose, the improved automatic film winding machine adopts the following technical scheme, which comprises a base, a film winding device is installed on the right side of the upper end of the base, a rotating device is installed on the middle of the upper end of the base, a corner pushing device is installed on the upper end of the base, and an auxiliary clamping device is installed on the rotating device.

[0006] The corner pushing device comprises a corner storage mechanism, and a suction and pushing mechanism is installed on the corner storage mechanism.

[0007] The corner storage mechanism comprises four rectangular support seats which are evenly arranged on the circumference of the upper end of the base, a corner baffle is arranged on the side of the upper end of the rectangular support seat away from the center of the four rectangular support seats, a right-angle corner is slidably arranged on the side of the lower side of the corner baffle close to the center of the four rectangular support seats, a first right-angle baffle which can slide and fit the right-angle corner is hinged to the upper and lower sides of the right-angle corner on the lower side of the corner baffle through a rotating shaft, two tension springs are connected between the first right-angle baffle and the corner baffle, and a second right-angle baffle is arranged on the two right-angle ends of the corner baffle corresponding to the right-angle corner on the upper side.

[0008] As a preferred technical scheme of the present application, the suction and pushing mechanism comprises two rectangular through holes opened at two right angle ends of the right angle guard corresponding to the position of the right angle guard baffle between the two right angle baffles, two No. 2 rectangular support plates are arranged on the upper and lower sides of the rectangular through hole of the right angle guard baffle, a No. 3 rectangular support plate is arranged at the end away from the right angle guard baffle of the No. 2 rectangular support plate, two cylinder push rods are installed on the No. 3 rectangular support plate through the mounting frame corresponding to the position of the two rectangular through holes, and a suction disc that can be attached to the right angle guard is arranged at the telescopic end of the cylinder push rod.

[0009] As a preferred technical scheme of the present application, the rotating device comprises a rotating motor installed through the base, a No. 1 rotating disc is connected to the output shaft of the rotating motor at the center position of the four rectangular support seats, a rectangular supporting plate is placed on the upper end of the No. 1 rotating disc, the height of the rectangular supporting plate is flush with the upper end surface of the rectangular support seat, and a plurality of box-shaped goods are placed on the upper end of the rectangular supporting plate.

[0010] As a preferred technical scheme of the present application, the auxiliary clamping device comprises four right angle through holes opened along the matrix corresponding to the rectangular supporting plate of the No. 1 rotating disc, a ring-shaped support seat is arranged on the lower end of the No. 1 rotating disc corresponding to the right angle through hole, the ring-shaped support seat is rotationally connected to the base, an electric telescopic rod is arranged on the ring-shaped support seat corresponding to the right angle through hole, a No. 1 right angle limiting plate with the same height as the No. 1 rotating disc is arranged at the telescopic end of the electric telescopic rod, and the No. 1 right angle limiting plate is slidingly connected to the right angle through hole.

[0011] As a preferred technical scheme of the present application, the film winding device comprises a film winding frame lifting mechanism.

[0012] As a preferred technical scheme of the present application, the film winding frame lifting mechanism comprises a rectangular stand arranged on the right side of the upper end of the base, a No. 1 rectangular support plate is arranged on the upper end of the rectangular stand, a convex sliding groove is opened in the middle of the rectangular stand, a lead screw is rotationally arranged in the convex sliding groove, a forward and reverse motor is installed on the upper end of the No. 1 rectangular support plate through a motor base, the output shaft of the forward and reverse motor rotationally penetrates the No. 1 rectangular support plate and the rectangular stand and is connected to the lead screw, a convex sliding block is threadedly connected to the lead screw corresponding to the convex sliding groove in the middle of the lead screw, a rectangular sliding plate slidingly connected to the rectangular stand is arranged at the front end of the convex sliding block, a No. 1 support plate is arranged on the upper end of the rectangular sliding plate, a No. 2 support plate is arranged on the lower end of the rectangular sliding plate, two film guide cylinders are rotationally arranged at the left front side of the No. 1 support plate and the No. 2 support plate, two film guide rollers are rotationally arranged at the back side of the No. 1 support plate and the No. 2 support plate, a stretched film placement tube is arranged on the right side of the upper end of the No. 2 support plate, and a stretched film is slidingly sleeved on the stretched film placement tube.

[0013] As a preferred technical scheme of the present application, the cargo supporting mechanism comprises a hydraulic push rod installed on the front side of the upper end of the rectangular support plate through a mounting bracket, a second turntable is arranged on the extension end of the hydraulic push rod corresponding to the rotation of the first turntable, and a second right-angle limiting plate is arranged on the lower end of the second turntable corresponding to the first right-angle limiting plate.

[0014] Beneficial effects: 1. The corner protector storage mechanism of the improved automatic film wrapping machine can place the right-angle corner protectors and prevent them from falling off, facilitating subsequent installation of the right-angle corner protectors for film wrapping work, and the right-angle corner protectors and the film wrapping package can provide additional protection against impact, extrusion or damage during transportation and handling.

[0015] 2. The suction and pushing mechanism of the improved automatic film wrapping machine can simultaneously push four pre-placed right-angle corner protectors to the box-shaped cargo, without the need for manual placement of the right-angle corner protectors one by one, improving the efficiency of installing the right-angle corner protectors, and the auxiliary clamping device can assist in clamping the lower side of the right-angle corner protector, avoiding tilting and falling of the right-angle corner protector.

[0016] 3. The cargo supporting mechanism of the improved automatic film wrapping machine cooperates with the auxiliary clamping device to assist in clamping the upper and lower sides of the right-angle corner protector, avoiding tilting and falling of the right-angle corner protector, and the second turntable can press the box-shaped cargo, avoiding tilting and scattering of the box-shaped cargo during rotation, and the film wrapping frame lifting mechanism can control the up-and-down movement of the stretched film, so that the box-shaped cargo can be quickly wrapped up and down by rotating the box-shaped cargo through the rotating device, avoiding the problem of low efficiency of manual film wrapping and packaging. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in conjunction with the drawings and examples.

[0018] Figure 1 is a perspective view of the present application.

[0019] Figure 2 is a front view of the present application.

[0020] Figure 3 is a left view of the present application.

[0021] Figure 4 is a left sectional view of the present application.

[0022] Figure 5 is a perspective view of the auxiliary clamping device of the present application (with a part of the annular support seat).

[0023] Figure 6 is a perspective view of the film wrapping frame lifting mechanism of the present application.

[0024] Figure 7It is the perspective structural schematic diagram of the corner guard pushing device (implicit right angle corner guard) of the application.

[0025] Figure 8 It is the film passing schematic diagram of the film winding frame of the application.

[0026] In the figure: 1, base; 2, film winding device; 21, film winding frame lifting mechanism; 211, rectangular column; 212, No. 1 rectangular support plate; 213, convex sliding groove; 214, lead screw; 215, forward and reverse motor; 216, convex sliding block; 217, rectangular sliding plate; 218, No. 1 support plate; 219, No. 2 support plate; 220, film guide cylinder; 221, film guide roller; 222, stretched film placement tube; 223, stretched film; 23, cargo supporting mechanism; 231, hydraulic push rod; 232, No. 2 rotating disc; 233, No. 2 right angle limiting plate; 3, rotating device; 31, rotating motor; 32, No. 1 rotating disc; 33, rectangular supporting plate; 34, box-shaped cargo; 4, corner guard pushing device; 41, corner guard storage mechanism; 411, rectangular support seat; 412, corner guard baffle; 413, rotating shaft; 414, No. 1 right angle baffle; 415, tension spring; 416, right angle corner guard; 417, No. 2 right angle baffle; 42, suction pushing mechanism; 421, rectangular through hole; 422, No. 2 rectangular support plate; 423, No. 3 rectangular support plate; 424, air cylinder push rod; 425, suction cup; 5, auxiliary clamping device; 51, right angle through hole; 52, annular support seat; 53, electric telescopic rod; 54, No. 1 right angle limiting plate. DETAILED DESCRIPTION

[0027] The embodiments of the application are described in detail below with reference to the accompanying drawings, but the application can be implemented in various different ways limited and covered by the claims.

[0028] Reference Figure 1 An improved automatic film winding machine, comprising a base 1, a film winding device 2 is installed on the rear side of the upper end of the base 1, a rotating device 3 is installed on the middle of the upper end of the base 1, a corner guard pushing device 4 is installed on the upper end of the base 1, and an auxiliary clamping device 5 is installed on the rotating device 3.

[0029] Reference Figure 1 and Figure 7 The corner guard pushing device 4 comprises a corner guard storage mechanism 41, and a suction pushing mechanism 42 is installed on the corner guard storage mechanism 41.

[0030] Reference Figures 2-4 and Figure 7The corner protector storage mechanism 41 comprises four rectangular support seats 411 evenly arranged on the upper end of the base 1, and a corner baffle 412 is arranged on the upper end of the rectangular support seat 411 away from one side of the center position of the four rectangular support seats 411. A right-angle corner 416 is slidably arranged on the lower side of the corner baffle 412 close to one side of the center position of the four rectangular support seats 411. Two right-angle ends of the corner baffle 412 are hingedly connected with a first right-angle baffle 414 that can slide and fit the right-angle corner 416 through a rotating shaft 413 on the upper and lower sides of the right-angle corner 416 located on the lower side. The first right-angle baffle 414 is connected with the corner baffle 412 through two tension springs 415. The two right-angle ends of the corner baffle 412 are provided with a second right-angle baffle 417 corresponding to the right-angle corner 416 located on the upper side.

[0031] Referring to Figures 2-5 The rotating device 3 comprises a rotating motor 31 installed through the base 1, and the output shaft of the rotating motor 31 is connected with a first rotating disc 32 located at the center position of the four rectangular support seats 411. A rectangular supporting plate 33 is clamped on the upper end of the first rotating disc 32. Specifically, a clamping groove is formed on the lower end of the rectangular supporting plate 33, and a clamping block corresponding to the clamping groove is arranged on the upper end of the first rotating disc 32. The detachable connection between the first rotating disc 32 and the rectangular supporting plate 33 is realized through the cooperation of the clamping block and the clamping groove. The height of the upper end of the rectangular supporting plate 33 is flush with the upper end surface of the rectangular support seat 411. A plurality of box-shaped goods 34 are placed on the upper end of the rectangular supporting plate 33. Four right-angle corners 416 are also placed on the upper end of the rectangular supporting plate 33 corresponding to the box-shaped goods 34 along the matrix.

[0032] The box-shaped goods 34 that need to be wrapped with film are stacked on the rectangular supporting plate 33 by artificial stacking. The rectangular supporting plate 33 is placed on the first rotating disc 32 by a forklift. At the same time, the right-angle corners 416 needed for wrapping the film are pre-placed in multiple numbers between the first right-angle baffle 414, the second right-angle baffle 417 and the corner baffle 412 by external equipment or artificial stacking. In the working process, the right-angle corners 416 are conveyed one by one downward as needed. The corner baffle 412 clamps the right-angle corner 416 located on the lower side through the tension spring 415. The corner protector storage mechanism 41 can place the right-angle corner 416 and prevent the right-angle corner 416 from falling off, which is convenient for subsequent installation of the corner protector for wrapping the film. The upper corner and the wrapping packaging can provide additional protection to prevent the goods from being impacted, squeezed or damaged during transportation and handling.

[0033] Referring to Figure 2 , Figure 3 and Figure 7The suction and pushing mechanism 42 comprises a rectangular corner baffle 412 between two first right-angled baffles 414, and two rectangular through holes 421 are arranged at two right-angled ends of the rectangular corner baffle 416 corresponding to the positions of the two rectangular through holes 421, and two second rectangular supporting plates 422 are arranged on the upper and lower sides of the rectangular through holes 421, and a third rectangular supporting plate 423 is arranged at the end of the second rectangular supporting plate 422 away from the rectangular corner baffle 412, and two cylinder push rods 424 are arranged on the third rectangular supporting plate 423 corresponding to the positions of the two rectangular through holes 421 through mounting frames, and a suction disc 425 is arranged on the telescopic end of the cylinder push rod 424 and can be attached to the right-angled corner 416.

[0034] Referring to Figures 2-5 The auxiliary clamping device 5 comprises four right-angled through holes 51 arranged in a matrix along the rectangular supporting plate 33 corresponding to the first rotating disc 32, a ring-shaped supporting seat 52 is arranged at the lower end of the first rotating disc 32 corresponding to the right-angled through holes 51, and the ring-shaped supporting seat 52 is rotationally connected to the base 1, an electric telescopic rod 53 is arranged on the ring-shaped supporting seat 52 corresponding to the right-angled through holes 51, and a first right-angled limiting plate 54 is arranged on the telescopic end of the electric telescopic rod 53 and is in the same height as the first rotating disc 32, and the first right-angled limiting plate 54 is slidingly connected to the right-angled through holes 51.

[0035] The suction disc 425 is controlled by the cylinder push rod 424 to move to the rectangular through hole 421, and when the suction disc 425 contacts the right-angled corner 416, the suction disc 425 is tightly attached to the right-angled corner 416, the cylinder push rod 424 continues to push the suction disc 425 to drive the right-angled corner 416 to move to the box-shaped goods 34, at this time, the right-angled corner 416 drives the first right-angled baffle 414 to rotate outward, thereby driving the right-angled corner 416 to move to the neatly stacked box-shaped goods 34 until the right-angled corner 416 is attached to the neatly stacked box-shaped goods 34, the first right-angled baffle 414 is turned back to the original position under the action of the tension spring 415, the first right-angled limiting plate 54 is controlled by the electric telescopic rod 53 to move upward to protrude out of the right-angled through hole 51, at this time, the first right-angled limiting plate 54 is clamped to the right-angled corner 416, the suction and pushing mechanism 42 can simultaneously push four pre-placed right-angled corner baffles to the box-shaped goods 34, without manually placing the right-angled corner baffles 416 one by one, thereby improving the efficiency of installing the right-angled corner baffles 416, and cooperating with the auxiliary clamping device 5 to assist in clamping the lower side of the right-angled corner baffle 416, thereby avoiding the problem of tilting and falling when the right-angled corner baffle 416 is wrapped with film.

[0036] It should be noted that, in order to avoid the right-angled corner 416 on the upper side from falling downward and affecting the reset of the suction cup 425 during the process that the suction cup 425 pushes the right-angled corner 416 on the lower side to move to the box-shaped cargo 34, the length of the suction cup 425 can be designed to ensure that the right-angled corner 416 on the upper side will not fall below the suction cup 425 during the process that the suction cup 425 pushes the right-angled corner 416 on the lower side to move to the box-shaped cargo 34, and when the suction cup 425 is completely reset, the right-angled corner 416 on the upper side is no longer blocked and can fall to a position where the lower end thereof is in contact with the rectangular support base 411, so as to package the next batch of box-shaped cargos 34.

[0037] Referring to Figure 1 and Figure 6 , the film wrapping device 2 comprises a film wrapping frame lifting mechanism 21, and a cargo supporting mechanism 23 is installed at the upper end of the film wrapping frame lifting mechanism 21.

[0038] Referring to Figures 2-4 , Figure 6 and Figure 8 , the film wrapping frame lifting mechanism 21 comprises a rectangular column 211 arranged at the right side of the upper end of the base 1, a first rectangular support plate 212 arranged at the upper end of the rectangular column 211, a convex-shaped sliding groove 213 formed in the middle of the rectangular column 211, a lead screw 214 rotatably arranged in the convex-shaped sliding groove 213, a forward and reverse motor 215 mounted on the motor base at the upper end of the first rectangular support plate 212, and the output shaft of the forward and reverse motor 215 rotatably penetrates the first rectangular support plate 212 and is connected to the lead screw 214 through the rectangular column 211, a convex-shaped sliding block 216 is threadedly connected to the middle of the lead screw 214 corresponding to the convex-shaped sliding groove 213, a rectangular sliding plate 217 is arranged at the front end of the convex-shaped sliding block 216 and is slidingly connected to the rectangular column 211, a first support plate 218 is arranged at the upper end of the rectangular sliding plate 217, a second support plate 219 is arranged at the lower end of the rectangular sliding plate 217, two film guide cylinders 220 are rotatably arranged at the left front side of the first support plate 218 and the second support plate 219, two film guide rollers 221 are rotatably arranged at the back side of the first support plate 218 and the second support plate 219, a stretched film placing pipe 222 is arranged at the right side of the upper end of the second support plate 219, and a stretched film 223 is slidingly sleeved on the stretched film placing pipe 222.

[0039] Referring to Figures 2-4 , the cargo supporting mechanism 23 comprises a hydraulic push rod 231 mounted on the front side of the upper end of the first rectangular support plate 212 through a mounting bracket, a second turntable 232 rotatably arranged at the extension end of the hydraulic push rod 231 corresponding to the first turntable 32, and a second right-angle limiting plate 233 arranged at the lower end of the second turntable 232 corresponding to the first right-angle limiting plate 54.

[0040] The second rotating disc 232 is driven to move downward by the hydraulic push rod 231 until the second rotating disc 232 presses the box-shaped goods 34, at this time, the four second right-angle limiting plates 233 assist in clamping the upper side of the right-angle corner guard 416, the stretch film 223 placed on the stretch film placing pipe 222 in advance is pulled out by manual, and the stretch film 223 is pulled out between the two film guide rollers 221 and then between the two film guide cylinders 220, according to whether the rectangular supporting plate 33 needs to be reused, the pulled-out stretch film 223 is fixed at a position between the rectangular supporting plate 33 and the box-shaped goods 34 that will not fall off, the first rotating disc 32 is controlled to rotate by the rotating motor 31, the box-shaped goods 34 is driven to rotate by the rectangular supporting plate 33, the lead screw 214 is controlled to rotate by the forward and reverse motor 215, the convex sliding block 216 is driven to reciprocate up and down by the lead screw 214, the stretch film 223 is driven to reciprocate up and down by the rectangular sliding plate 217, the box-shaped goods 34 is rotated to drive the stretch film 223 to be wound, the wrapped box-shaped goods 34 is taken out after the winding of the box-shaped goods 34 is completed, the above operation is repeated to perform the winding work on the next batch of box-shaped goods 34, the goods supporting mechanism 23 cooperates with the auxiliary clamping device 5 to assist in clamping the upper and lower sides of the right-angle corner guard 416, so as to avoid the right-angle corner guard 416 from tilting and falling off, and the second rotating disc 232 can press the box-shaped goods 34 to avoid the box-shaped goods 34 from tilting and scattering during rotation, and the stretch film 223 can be controlled to move up and down by the stretch film winding frame lifting mechanism 21, so that the box-shaped goods 34 is rotated by the rotating device 3 to quickly wind the box-shaped goods 34 up and down, thereby avoiding the problem of low efficiency of manual winding and packaging.

[0041] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, in the description of the present application, unless otherwise specified and limited, the meanings of "a plurality of", "a plurality of", "a plurality of" are two or more.

[0042] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "set", "connected", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and equivalent changes made according to the structure, shape, principle of the present application should be included in the protection scope of the present application.

Claims

1. An improved automatic wrapping machine, comprising a base (1), characterized in that, A film wrapping device (2) is installed on the upper right side of the base (1), a rotating device (3) is installed in the middle of the upper part of the base (1), a corner protection pushing device (4) is installed around the rotating device (3) on the upper part of the base (1), and an auxiliary clamping device (5) is installed on the rotating device (3). The corner protector pushing device (4) includes a corner protector storage mechanism (41), and a suction and pushing mechanism (42) is installed on the corner protector storage mechanism (41). The corner protector storage mechanism (41) includes four rectangular support seats (411) evenly arranged circumferentially on the upper end of the base (1). A corner protector baffle (412) is provided on the side of the upper end of the rectangular support seat (411) away from the center position of the four rectangular support seats (411). Multiple right-angle corner protectors (416) are vertically slidably arranged on the side of the corner protector baffle (412) close to the center position of the four rectangular support seats (411). The two right-angle ends of the corner protector baffle (412) are connected to the upper and lower sides of the right-angle corner protector (416) on the lower side by a rotating shaft (413) with a first right-angle baffle (414) that can slide and fit against the right-angle corner protector (416). The first right-angle baffle (414) is connected to the corner protector baffle (412) by two tension springs (415). The two right-angle ends of the corner protector baffle (412) are provided with a second right-angle baffle (417) on the upper side of the right-angle corner protector (416). The rotating device (3) includes a turntable (32), a rectangular pallet (33) is placed on the upper end of the turntable (32), and multiple box-shaped goods (34) are placed on the upper end of the rectangular pallet (33). The wrapping device (2) includes a wrapping frame lifting mechanism (21), and a cargo support mechanism (23) is installed at the upper end of the wrapping frame lifting mechanism (21). The cargo support mechanism (23) includes a hydraulic push rod (231). The telescopic end of the hydraulic push rod (231) is rotatably mounted on a second turntable (232) corresponding to the first turntable (32). A second right-angle limiting plate (233) is mounted on the lower end of the second turntable (232). The cargo support mechanism (23) works with the auxiliary clamping device (5) to clamp the right-angle corner protector (416) on both sides to prevent the right-angle corner protector (416) from tilting and falling. At the same time, the second turntable (232) presses down on the box-shaped cargo (34).

2. An improved automatic wrapping machine according to claim 1, characterized in that: The suction and pushing mechanism (42) includes a corner guard (412) with two rectangular through holes (421) at the two right-angle ends of the right-angle corner guard (416) between two first right-angle guards (414). The corner guard (412) is provided with second rectangular support plates (422) on the upper and lower sides of the rectangular through holes (421). The second rectangular support plate (422) is provided with a third rectangular support plate (423) at the end away from the corner guard (412). The third rectangular support plate (423) is provided with two cylinder push rods (424) at the position of the two rectangular through holes (421) through the mounting bracket. The telescopic end of the cylinder push rod (424) is provided with a suction cup (425) that can fit the right-angle corner guard (416).

3. An improved automatic wrapping machine according to claim 2, characterized in that: The rotating device (3) also includes a rotating motor (31) installed through the base (1). The output shaft of the rotating motor (31) is connected to a turntable (32) located at the center of four rectangular support seats (411), and the rectangular support plate (33) is flush with the upper surface of the rectangular support seat (411).

4. An improved automatic wrapping machine according to claim 3, characterized in that: The auxiliary clamping device (5) includes four right-angle through holes (51) opened along the matrix of the first turntable (32) corresponding to the rectangular support plate (33). The lower end of the first turntable (32) is provided with an annular support seat (52) corresponding to the right-angle through hole (51), and the annular support seat (52) is rotatably connected to the base (1). The annular support seat (52) is provided with an electric telescopic rod (53) corresponding to the right-angle through hole (51). The telescopic end of the electric telescopic rod (53) is provided with a first right-angle limiting plate (54) of the same height as the first turntable (32), and the first right-angle limiting plate (54) is slidably connected to the right-angle through hole (51).

5. An improved automatic wrapping machine according to claim 4, characterized in that: The film wrapping frame lifting mechanism (21) includes a rectangular column (211) provided on the upper right side of the base (1). A first rectangular support plate (212) is provided on the upper end of the rectangular column (211). A convex groove (213) is provided in the middle of the rectangular column (211). A lead screw (214) is rotatably installed in the convex groove (213). A forward and reverse motor (215) is installed on the upper end of the first rectangular support plate (212) through a motor mount. The output shaft of the forward and reverse motor (215) rotates through the first rectangular support plate (212) and is connected to the lead screw (214) through the rectangular column (211). A convex slider (214) is threadedly connected to the convex groove (213) in the middle of the lead screw (214). 6) A rectangular slide plate (217) is slidably connected to a rectangular column (211) at the front end of the convex slider (216). A first support plate (218) is provided at the upper end of the rectangular slide plate (217), and a second support plate (219) is provided at the lower end of the rectangular slide plate (217). Two guide cylinders (220) are rotatably arranged on the left front side of the first support plate (218) and the second support plate (219). Two guide rollers (221) are rotatably arranged on the rear side of the first support plate (218) and the second support plate (219). A stretch film placement tube (222) is provided on the upper right side of the second support plate (219), and a stretch film (223) is slidably sleeved on the stretch film placement tube (222).

6. An improved automatic wrapping machine according to claim 5, characterized in that: A hydraulic push rod (231) is installed on the front side of the upper end of the first rectangular support plate (212) via a mounting bracket. The first right-angle limiting plate (54) corresponds to the second right-angle limiting plate (233).

Images