Wrapping machine

Abstract

The present invention provides a wrapping machine that includes a turntable and a fixed base and is equipped with a film clamping and pulling mechanism, the film clamping and pulling mechanism is movably mounted on the turntable and is equipped with a drive motor that causes the film clamping and pulling mechanism to pull back the film, the film clamping and pulling mechanism is further equipped with a film cutting mechanism that is located between the film clamp operating portion of the film clamping and pulling mechanism and the boundary of the area where the packaged items are placed, and the film cutting mechanism is used to reduce the connection strength of the film so that it can be torn. By providing the film clamping and pulling mechanism on the turntable, the present invention can reduce the movement stroke of the film clamping and pulling mechanism, and because the film is cut by the film pulling back action, work efficiency can be improved by being driven by a motor, and the wrapping machine related to the invention can be fully electric.

Description

[Technical Field]

[0001] The present invention relates to a wrapping machine that uses a turntable to wrap a film around an item to be packaged while rotating the item on the turntable. [Background technology]

[0002] A wrapping machine, which uses a turntable to rotate the packaged items while wrapping them with film, is equipped with a film clamping mechanism fixed to the turntable. A swinging film thermal melt-breaking mechanism is mounted on a fixed base. After the wrapping process is complete, the film thermal melt-breaking mechanism must be swung behind the film clamping mechanism to thermally melt and break the film. Because this film thermal melt-breaking mechanism has a relatively large swing stroke and requires additional swinging motion after swinging to the specified position, a cylinder-driven mechanism is more suitable. Therefore, air tubing must be installed throughout the wrapping machine to supply air. However, many workplaces lack an air source or the environment does not permit the use of an air source (due to the constant polluting nature of air sources, some workplaces do not allow air sources). This makes implementing these operations quite difficult.

[0003] With the development of the storage battery field and product development, there is a demand for fully electric wrapping machines. However, the conventional composite structure using a film clamping mechanism and a film thermal melting and breaking mechanism has a long stroke of the thermal melting and breaking operating part, which makes it difficult to quickly break the film using a motor-driven system. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention provides a wrapping machine that avoids the use of an air source, thereby realizing a fully electric wrapping machine according to the present invention. [Means for solving the problem]

[0005] A wrapping machine having a turntable and a fixed base, A wrapping machine comprising a film clamping and pulling-out mechanism, the film clamping and pulling-out mechanism being movably mounted on a turntable and provided with a drive motor that causes the film clamping and pulling-out mechanism to pull back the film; the film clamping and pulling-out mechanism also being provided with a film cutting mechanism, the film cutting mechanism being located between the film clamp operating part of the film clamping and pulling-out mechanism and the boundary of the area where the packaged item is placed, and the film cutting mechanism being used to reduce the bonding strength of the film so that the film can be torn.

[0006] The present invention is based on the above technical means and may also use the following additional technical means or a combination of these additional technical means.

[0007] the film clamping and pulling mechanism includes a mounting base; the mounting base is rotatably connected to a turntable; The drive motor rotates together with the mounting base and the turntable, The drive motor is disposed on the mounting base and is driven by the drive motor to rotate relative to the turntable, and a film clamp operating portion is movably provided on the mounting base.

[0008] The mounting base is provided with a running support roller, The travel support roller is connected to the drive motor and is driven to rotate, and rolls along a circular locus with the rotation center of the mounting base as its center.

[0009] The film clamp and pull-out mechanism includes a mounting base. The mounting base is movably mounted on a turntable. A drive motor is mounted on the mounting base to drive the mounting base to move back and forth relative to the turntable. The drive motor rotates together with the mounting base and the turntable. Rails are mounted on the turntable and fixed base, and the rails on the fixed base match and fit with the rails on the turntable. The rails mounted on the turntable and fixed base are connected at the initial position of the turntable, and the mounting base can move in the film tearing direction and return to the turntable, and a film clamp operating unit is mounted on the mounting base.

[0010] The film clamping and tearing mechanism includes a mounting base, on which a running support roller is provided, the running support roller being connected to the drive motor so as to be rotatable and rolling along a slide rail.

[0011] The film clamp and pull-out mechanism is provided with a positioning structure, which positions the film clamp and pull-out mechanism relative to the turntable when the mechanism returns to its initial position on the turntable.

[0012] The positioning structure includes an electromagnet, a fixed plate that forms an adsorption fit with the electromagnet, and a limit structure that limits the movement of the film clamp and pull-out mechanism that is fixed on a turntable.

[0013] The film cutting mechanism is fixed on the film clamp actuator and moves together with the film clamp actuator.

[0014] The film cutting mechanism uses a toothed cutting blade, and when cutting the film, the teeth on the cutting blade pierce and tear or cut the bottom of the film.

[0015] The film clamp operating part includes a left clamp arm and a right clamp arm, and the film cutting mechanism includes a saw blade groove, which is provided on the left clamp arm and the right clamp arm, respectively, and the saw blade is inserted into the groove when the film clamp operating part is closed.The saw blade uses a toothed cutting blade, so that when cutting the film, the multiple teeth on the toothed cutting blade are used to pierce, tear, or cut the bottom of the film.

[0016] The top surface of the turntable and the top surface of the fixed base are connected and placed at the same level. [Effects of the Invention]

[0017] By using the technical means of the present invention, there is no need to install an oscillating heat-melting film cutting mechanism on a fixed base, and by installing the film clamping and pulling-out mechanism on the turntable, the movement stroke of the film clamping and pulling-out mechanism can be reduced.The film is cut by the film pulling-back action, so work efficiency can be improved by motor drive, and the wrapping machine related to the invention can be fully electric. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic diagram of Example 1 of the present invention. [Figure 2] FIG. 2 is a perspective view of the first embodiment of the present invention, showing the structure of the film clamp and pull-out mechanism of the first embodiment in the initial position and the film pull-out position. [Figure 3] FIG. 3 is a perspective view of the first embodiment of the present invention, showing the structure of the film clamp and pull-out mechanism of the first embodiment in the initial position and the film pull-out position. [Figure 4] FIG. 4 is an exploded view of the film clamping and pulling-out mechanism of the first embodiment. [Figure 5]FIG. 5 is a schematic diagram of Example 2 of the present invention, showing the structure of the film clamping and tearing mechanism of Example 2 in the initial position and the film pulling position. [Figure 6] FIG. 6 is a schematic diagram of the second embodiment of the present invention, showing the structure of the film clamping and tearing mechanism of the second embodiment in the initial position and the film pulling position. [Figure 7] FIG. 7 is an exploded view of the film clamp and pull-out mechanism of the second embodiment. [Figure 8] FIG. 8 is an exploded view of the film clamping and pulling-out mechanism of the second embodiment. [Figure 9] FIG. 9 is a schematic diagram of the film clamping and tearing mechanism of Example 3 and an exploded view of the positioning structure. [Figure 10] FIG. 10 is a schematic diagram of the film clamping and tearing mechanism of Example 3 and an exploded view of the positioning structure.

[0019]

[0020]

[0021]

[0022]

[0023] DETAILED DESCRIPTION OF THE INVENTION

[0024] As shown in the drawings, the wrapping machine according to the present invention uses a wrapping machine in which an item to be packaged 400 rotates on a turntable and a film is wrapped around the item to be packaged 400. The wrapping machine includes a turntable 100 and a fixed base 200, on which a standing post 300 is provided, and the film roll rack of the wrapping machine is connected to a lifting mechanism within the standing post 300.

[0025] The wrapping machine of the present invention is provided with a film clamping and pulling-out mechanism. The film clamping and pulling-out mechanism is mounted on a turntable 100 and rotates together with the turntable 100 during wrapping. The film clamping and pulling-out mechanism is movably mounted on the turntable 100 and is equipped with a drive motor. The drive motor causes the film clamping and pulling-out mechanism to pull back the film. The film clamping and pulling-out mechanism is further provided with a film cutting mechanism. The film cutting mechanism is located between the film clamp operating portion of the film clamping and pulling-out mechanism and the boundary of the placement area for the packaged item (the packaged item). When the film clamping and pulling-out mechanism is closed, the film cutting mechanism enters an operating state, reducing the bonding strength of the film and causing it to tear. When the film clamping and pulling-out mechanism is opened, the film cutting mechanism is also opened.

[0026] The film clamping and unwinding mechanism is movable and retracts and resets the film. The movement of the film clamping and unwinding mechanism can be rotary. The rotation angle is sufficient as long as the film can be torn along the cutting blade in front of the product. Because the rotation angle is small, it is suitable for electric drive. Example 1 shown in Figures 1 to 4 illustrates an embodiment of such a rotary film unwinding mechanism. The film clamping and unwinding mechanism includes a mounting base 11. The mounting base 11 is rotatably mounted on a turntable 100. A drive motor 12 is mounted on the mounting base 11. The drive motor 12 rotates together with the mounting base 11 and the turntable 100, driving the mounting base 11 to rotate relative to the turntable 100. A movable film clamp operating unit is mounted on the mounting base 11. Reference numeral 111 in the drawings denotes a mounting base shaft fixed on the turntable 100. Reference numeral 112 in the drawings denotes a bearing seat mounted on the mounting base 11.

[0027] The mounting base is provided with running support rollers 13, which function as drive wheels. The running support rollers 13 are connected to a drive motor 12 via a radial shaft 14, and their rotation is driven. The mounting base moves on a circular trajectory with the rotation center, i.e., the axis 111, as the center of the circle. A moving passive roller 131, which serves as an auxiliary support, is provided on the mounting base 11. Each of the rollers is provided above the mounting base 11. A hole is provided on the mounting base 11, and only the bottom edge of the roller protrudes downward from the mounting base 11, and only the bottom edge is positioned below the mounting base 11, making contact with the turntable 100 (fixed base 200). This keeps the height of the mounting base 11 low.

[0028] In the film clamp and pull-out mechanism, the rotation angle of the mounting base 11, i.e., the travel distance of the movable film clamp actuator, can be controlled by the rotation speed of the drive motor 12. The current position can be maintained by stopping the drive motor 12. Preferably, the film clamp and pull-out mechanism can be provided with an additional positioning structure that positions it relative to the turntable 100 when it rotates to its initial position on the turntable (see FIG. 2). The positioning structure includes an electromagnet 15, a fixed plate (located on the turntable or, as in this embodiment, utilizing the side of the travel limit structure 16) that is attracted to the electromagnet located on the turntable, and a travel limit structure 16 that limits the travel of the film clamp and pull-out mechanism fixed on the turntable 100. A sensor switch 17 can also be provided on the mounting base 11. The sensor switch 17 controls the on-off of the electromagnet 15. When it rotates to the specified position, the sensor switch 17 detects the fitting and turns on the electromagnet. The rotation stroke of the mounting base 11 in the film retraction direction can be controlled by the number of rotations of the drive motor 12, or by the alignment of the sensor switch 17 with a fitting on the fixed base 200, or by a limiting component. Once the sensor switch 17 has completed alignment, it sends a signal to stop the drive motor 12. When the film clamp and pull-out mechanism returns to its initial position, it is positioned entirely above the turntable 100. When it has rotated to the specified position in the film retraction direction (see Figure 3), depending on the film pull-out distance setting, the film clamp and pull-out mechanism may still be positioned above the turntable 100, or may be partially positioned above the fixed base 200.

[0029] The film cutting mechanism may be driven by a separate drive motor. Preferably, in this embodiment, it is fixed to a movable film clamp actuator corresponding to the lower part of the film. Since the film cutting mechanism can move together with the movable film clamp actuator, the structure is simpler and the film clamp actuator is perfectly fitted to the automatic. The movable film clamp actuator 18 of the film clamp and pull-out mechanism includes a left clamp arm 181 and a right clamp arm 182. The film cutting mechanism includes a saw blade 183 and a cutting groove 184. The saw blade 183 and the cutting groove 184 are provided on the left clamp arm 181 and the right clamp arm 182, respectively. The saw blade 183 is inserted into the cutting groove 184 when the film clamp actuator is closed. When the saw blade 183 cuts the film using a toothed cutting blade 185, multiple teeth on the toothed cutting blade pierce or cut the bottom of the film. The pierced portion of the film appears as a point, a perforation, or a long slit. The film clamp and pull-out mechanism pulls the film back along the slit, tearing and separating the film.

[0030] A base plate can be installed on both the top surface of the turntable 100 and the top surface of the fixed base 200 (or on only one of them) (in this embodiment, a base plate 201 is installed on the top surface of the fixed base 200), connecting the top surfaces of the turntable 100 and the fixed base 200 at the same level.

[0031] The film clamp and pull-out mechanism is provided with a film clamp drive motor 186. The film clamp drive motor drives the left clamp arm 181 and the right clamp arm 182 to rotate synchronously in opposite directions via a gear transmission mechanism. A gear is provided at the rotation center of each of the left clamp arm 181 and the right clamp arm 182. The two gears are meshed together, and one of the gears is connected to the drive motor 186 to function as a drive gear.

[0032] The film clamp and pull-out mechanism is powered by a storage battery 19. The main controller of the wrapping machine controls the operation of each drive motor and electromagnet 15 via a wireless communication module 10, and is also connected to a sensor switch 17. Therefore, the wrapping operation of the wrapping machine can be performed without using an air source or an oscillating film heat melting mechanism, making it possible to realize a fully electric wrapping machine.

[0033] In a preferred embodiment, before operation begins, the components on the overall mounting base 11 are positioned on the turntable 100 by cooperation of the electromagnet 15 and limit structure 16. When wrapping an item placed on the turntable, the film head on the film rack is clamped by the film clamping and unwinding mechanism. The wrapping machine is started, driving the rotation of the turntable 100 to wrap the film around the item. Once the film is wrapped around the item, the film clamping and unwinding mechanism releases the film head. As the film rack rises and falls and the turntable 100 rotates, the film is wound onto the surface of the item. After the winding and packaging operation is completed, the turntable 100 rotates back to the front of the upright 300 of the film clamp and pull-out mechanism, where it stops. The film clamp drive motor 186 is activated, and the movable film clamp operating part 18 clamps the film, while the movable film cutting mechanism closes, piercing and tearing the film. Driven by the drive motor 12, the roller 13 starts rolling. The mounting base 11 rotates around the axis 111 in the direction of pulling back the film. The film is pulled and broken. The film head remains in the film clamp and pull-out mechanism. The drive motor 12 drives in the opposite direction. The mounting base 11 returns to its initial position, and the electromagnet is activated to position the film clamp and pull-out mechanism, ready to begin wrapping the next item again.

[0034] The film clamping and pulling mechanism can also be configured to slide back and forth. The stroke of the movement is sufficient as long as the film can be smoothly torn along the cut edge. Because the movement distance is short, it is suitable for electric drive. Example 2, shown in Figures 5 to 8, illustrates such a sliding film pulling embodiment. The film clamping and pulling mechanism includes a mounting base 21. The mounting base 21 is movably mounted on a turntable 100. A drive motor 22 is mounted on the mounting base 21 and drives the drive motor to slide back and forth relative to the turntable 100. The drive motor 22 rotates together with the mounting base 21 and the turntable 100. Rails are installed on the turntable 100 and fixed base 200. Both sides of the mounting base 21 may slide directly along the rails 102, 202, or they may be slid along the rails 102, 202 using parts such as sliders. The rails 202 on the fixed base are aligned with the rails 102 on the turntable. This allows rails 102, 202 installed on the turntable 100 and fixed base 200 to be connected when the turntable 100 is in its initial position. The mounting base 21 can move in the film retraction direction and can also return to the turntable 100. A movable film clamp operating unit 18 is attached to the mounting base 21.

[0035] The mounting base 21 is provided with travel support rollers 23. The travel support rollers 23 are connected as drive wheels to a drive motor 22 via a drive shaft 24 and are driven to rotate. The travel support rollers 23 are provided on both the left and right sides of the mounting base 21 and roll on the upper surfaces of the turntable 100 and fixed base 200 in the direction of the rails 102, 202. A movable passive roller 231 that plays an auxiliary role may also be provided on the mounting base 21. Each of the rollers is arranged above the mounting base 21, and holes are opened in the mounting base 21 so that only the bottom edges of the rollers protrude downward from the mounting base 21, with only the bottom edges positioned below the mounting base 21 and in contact with the turntable 100 (fixed base 200), thereby keeping the height of the mounting base 21 low.

[0036] In the film clamping and drawing mechanism, the movement stroke of the mounting base 21 is controlled by the rotation speed of the drive motor 22, and the current position is maintained by stopping or driving the drive motor 22. Preferably, the film clamping and drawing mechanism is provided with an additional positioning structure. When the film clamping and drawing mechanism returns to its initial position on the turntable 100 (see FIG. 5), it is positioned. In this embodiment, the positioning structure can use a brake mechanism, which can employ a braking mechanism including a brake electric power mechanism 251 and a rotary friction block 252 driven by the brake electric power mechanism 251. Corresponding fixed plates 253 and 254 are provided on the surfaces of the turntable 100 and the fixed base 200, cooperating with the rotary friction block 252. The rotary friction block 252 can be coated with a friction material or a flexible material. A travel limit structure 26 for the film clamping and drawing mechanism can be provided on the turntable 100. The brake electric power mechanism 251 can employ an electromagnetic suction cylinder. An electromagnetic suction pipe is connected to the rotary friction block 252 via a link mechanism. When the power is turned on, the suction cylinder is held in place and the rotary friction block 252 rotates downward to engage with the fixed plate 253 or 254, thereby applying braking. When the power is turned off, the suction cylinder pops out and the rotary friction block 252 rotates upward to disengage from the fixed plate, thereby releasing the brake mechanism. A sensor switch 27 may also be provided on the mounting base 21. The sensor switch 27 is used to control the activation of the brake electric power mechanism 251, and when the turntable returns to a specified position, the sensor switch 27 detects the corresponding part on the turntable (part of the fixed plate 253) and activates the brake electric power mechanism 251.

[0037] The movement stroke of the mounting base 21 in the film retraction direction can be controlled by the rotation speed of the drive motor 22, or by cooperation between the sensor switch 27 and a corresponding component (part of the fixed plate 254) on the fixed base 200. A limit structure similar to the movement limit structure 26 can also be provided on the fixed base 200.

[0038] When the sensor switch 27 detects a predetermined position, it sends a signal to stop driving the drive motor 22. When the film clamp and pull-out mechanism returns to its initial position, it is positioned entirely above the turntable 100. When it reaches a specified position in the film pull-back direction (see FIG. 6), depending on the set film pull-out distance, the film clamp and pull-out mechanism can remain on the turntable 100, or can be positioned partially or entirely above the fixed base 200. A base plate can be provided on both the top surface of the turntable 100 and the top surface of the fixed base 200 (or on just one of them) (in this embodiment, a base plate 201 is provided on the top surface of the fixed base 200), so that the top surfaces of the turntable 100 and the fixed base 200 are aligned on the same horizontal plane.

[0039] In this embodiment, the structure of the film cutting mechanism and the structure of the movable film clamp operating unit are the same as those in embodiment 1 shown in Figures 1 to 4. The film cutting mechanism is also the same as in embodiment 1 and is mounted on the movable film clamp operating unit. In Figures 5 to 8, reference numerals that are the same as those in Figures 1 to 4 indicate the same parts. Of these, reference numeral 187 is the driving gear described in the embodiment, and reference numeral 188 is the passive gear that meshes with it.

[0040] The film clamp and pull-out mechanism is powered by a storage battery 29, and the wrapping machine's main controller controls the operation of each drive motor and brake electric power mechanism 251 via wireless communication module 20, and is also connected to sensor switch 27. Therefore, wrapping work can be performed by the wrapping machine without using an air source or providing an oscillating film heat melting mechanism, making it possible to realize a fully electric wrapping machine.

[0041] In Example 2, before starting operation, the components on the overall mounting base 21 are positioned on the turntable 100 by the action of the brake mechanism and limit structure. When winding an item placed on the turntable, the film head on the film rack is clamped to the film clamp and pull-out mechanism. The wrapping machine is started, driving the rotation of the turntable 100 to wrap the film around the item. After that, the film clamp and pull-out mechanism releases the film head, and as the film rack rises and falls and the turntable 100 rotates, the film is wound around the surface of the item. After the winding and wrapping operation is completed, the turntable 100 rotates back to the front of the upright 300 of the film clamp and pull-out mechanism (i.e., the initial position of the turntable), and the rails 102, 202 disposed on the turntable 100 and the fixed base 200 are connected. The film clamp drive motor 186 is activated, and the movable film clamp actuator 18 clamps the film. At the same time, the movable film cutting mechanism closes and pierces and tears the film. Drive motor 22 drives roller 23, which moves mounting base 21 along rails 102 and 202 in the direction of the vertical column (the direction in which the film is pulled and broken), breaking the film. The film head remains held by the film clamp and pull-out mechanism. Drive motor 22 then operates in the opposite direction, returning mounting base 21 to its initial position. Guided by the sensor switch, the brake mechanism is activated, returning the film clamp and pull-out mechanism to its set position, and the film is ready to wrap the next item again.

[0042] As shown in Figures 9 and 10, based on the second embodiment, a different electromagnetic positioning mechanism is used to position the film clamp and pull-out mechanism back to its initial position, and the position of the film clamp and pull-out mechanism can be maintained when it is pulled back. The electromagnetic positioning mechanism includes an electromagnet 35 fixed to the bottom surface of a fixed frame 351 of the mounting base. When suction positioning with the turntable is required, the electromagnet 35 is popped out. In Figures 9 and 10, the same reference numerals as in Figures 1 to 8 refer to the same elements.

[0043] Unless otherwise specified, the orientations or positional relationships indicated in the present invention, such as "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "axial direction," are orientations or positional relationships shown in the drawings, and are intended merely for the convenience and simplicity of the description of the present invention, and do not expressly or imply that a certain device or element must have a specific orientation, specific orientation structure, or operation. Therefore, the orientations or positional relationships described in the present invention are used for illustrative purposes only and should not be construed as limitations on the present patent. Those skilled in the art should be able to easily understand the specific meanings of the above terms in conjunction with the drawings and in more specific situations.

[0044] Unless otherwise specified and clearly defined, the terms "installation," "clamp installation," and "connection" used in the present invention should be understood in a broad sense. For example, they can be understood as fixed connection, detachable connection, or integral connection, as well as direct connection, indirect connection, or internal communication between two elements. Those skilled in the art should understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0045] The above are only specific embodiments of the present invention, and the structural features of the present invention are not limited thereto. Any variations or modifications made by those skilled in the art within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A wrapping machine having a turntable and a fixed base, Equipped with a film clamp and pull-out mechanism, the film clamping and drawing mechanism is movably mounted on the turntable and includes a drive motor; the drive motor can operate the film clamping and drawing mechanism to draw back the film; The film clamping and drawing mechanism further includes a film cutting mechanism, A wrapping machine characterized in that the film cutting mechanism is located between the film clamp operating part of the film clamp / pulling mechanism and the boundary of the area where the packaged item is placed, and the film cutting mechanism is used to reduce the bonding strength of the film so that the film can be torn.

2. 2. The wrapping machine of claim 1, wherein the film clamping and pulling mechanism includes a mounting base, the mounting base is rotatably connected to a turntable, the drive motor rotates together with the mounting base and the turntable, the drive motor is mounted on the mounting base and is driven by the drive motor to rotate relative to the turntable, and a film clamp operating unit is movably mounted on the mounting base.

3. 3. The wrapping machine according to claim 2, wherein a running support roller is provided on the mounting base, the running support roller is connected to the drive motor so that its rotation can be driven, and the running support roller rolls and moves on a circumferential locus with the rotation center of the mounting base as the center of the circle.

4. 2. The wrapping machine of claim 1, wherein the film clamp and pull-out mechanism includes a mounting base, the mounting base is movably mounted on the turntable, a drive motor is mounted on the mounting base to drive back and forth movement relative to the turntable, the drive motor rotates together with the mounting base and the turntable, rails are mounted on the turntable and the fixed base, the rails on the fixed base match and fit with the rails on the turntable so that the rails on the turntable and the fixed base are connected at the initial position of the turntable, the mounting base can move in the film tearing direction and can also return to the turntable, and a film clamp operating unit is mounted on the mounting base.

5. 5. The wrapping machine according to claim 4, wherein the film clamping and tearing mechanism includes a mounting base, the mounting base is provided with a running support roller, the running support roller is connected to the drive motor so as to be able to drive rotation, and rolls along a rail.

6. 6. A wrapping machine as described in claim 2, 3, 4 or 5, wherein the film clamping and pulling mechanism is provided with a positioning structure that positions the film clamping and pulling mechanism relative to the turntable when the mechanism returns to its initial position on the turntable.

7. 7. The wrapping machine according to claim 6, wherein the positioning structure includes an electromagnet, a fixed plate that forms an adsorption fit with the electromagnet, and a limit structure that limits the movement of the film clamping and pulling mechanism fixed on a turntable.

8. 2. The wrapping machine according to claim 1, wherein the film cutting mechanism is fixed on the film clamp actuator and moves together with the film clamp actuator.

9. 2. The wrapping machine according to claim 1, wherein the film cutting mechanism uses a toothed cutting blade, and when cutting the film, multiple teeth on the cutting blade pierce, tear, or cut the bottom of the film.

10. 9. The wrapping machine of claim 8, wherein the film clamp operating unit includes a left clamp arm and a right clamp arm, the film cutting mechanism includes a saw blade groove, the saw blade grooves are provided on the left clamp arm and the right clamp arm, respectively, the saw blade is inserted into the groove when the film clamp operating unit is closed, and the saw blade is a toothed cutting blade, so that when cutting the film, the multiple teeth of the toothed cutting blade are used to pierce, tear or cut the bottom of the film.

11. 2. The wrapping machine according to claim 1, wherein the top surface of the turntable and the top surface of the fixed base are connected and placed at the same level.

Images