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 wraps a film around an object to be wrapped while rotating the object on a turntable.

Background Art

[0002] A wrapping machine that wraps a film around an object to be wrapped while rotating the object on a turntable includes a film clamping mechanism with a fixed position on the turntable. A swing-type film heat fusion breaking mechanism is provided on a fixed base. After the wrapping operation is completed, it is necessary to swing the film heat fusion breaking mechanism behind the film clamping mechanism to heat-fusion break the film. This film heat fusion breaking mechanism has a relatively large swing stroke, and an additional swinging operation is required even after swinging to a specified position. Therefore, a cylinder drive method is more suitable, and thus, an air tube must be provided in the entire wrapping machine to supply air. However, in many workplaces, there is no air source, or the environment of the air source (since the air source is inherently polluting, there are cases where the air source is not allowed in certain workplaces) is not allowed. Therefore, it is quite difficult to realize these operations.

[0003] With the development of the battery field and products, full electrification of the wrapping machine is required. However, the conventional composite structure using a film clamping mechanism and a film heat fusion breaking mechanism has a large stroke of the heat fusion breaking operation part. Therefore, it has been quite difficult to quickly break the film using a motor drive method.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention provides a wrapping machine that avoids the use of an air source and realizes full electrification of the wrapping machine according to the present invention.

Means for Solving the Problems

[0005] A wrapping machine equipped with a turntable and a fixed base, A wrapping machine characterized by comprising a film clamping and pulling mechanism, the film clamping and pulling mechanism being movably mounted on a turntable and provided with a drive motor, the drive motor causing the film clamping and pulling mechanism to pull back the film, the film clamping and pulling mechanism further provided with a film cutting mechanism, the film cutting mechanism being located between the film clamping operating part of the film clamping and pulling mechanism and 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 may also be used based on the above technical means, or in combination thereof.

[0007] The aforementioned film clamp / pull-out mechanism includes a mounting base, The mounting base is rotatably connected to the turntable, The aforementioned drive motor rotates together with the turntable along with the mounting base. The drive motor is positioned on the mounting base and is driven by the drive motor to perform rotational motion relative to the turntable, and a movable film clamp operating part is provided on the mounting base.

[0008] The aforementioned mounting base is provided with a travel support roller. The aforementioned travel support roller is connected to the drive motor and rotated, and rolls along a circular trajectory 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 provided 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 turntable along with the mounting base. Rails are installed on the turntable and a fixed base, and the rails on the fixed base are matched and fitted to the rails on the turntable. The rails installed on the turntable and the fixed base are connected at the initial position of the turntable, and the mounting base can move in the film tearing direction and can also return to the turntable, and a film clamp operating part is provided on the mounting base.

[0010] The film clamping and tearing mechanism includes a mounting base. The mounting base is provided with a travel support roller. The travel support roller can be connected to the drive motor to drive rotation and roll along a sliding rail.

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

[0012] The positioning structure includes an electromagnet, a fixing plate that provides an attractive fit to the electromagnet, and a limit structure that restricts the movement of the film clamp / pull-out mechanism fixed on the turntable.

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

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

[0015] The film clamp operating unit includes a left clamp arm and a right clamp arm, and the film cutting mechanism includes a saw-like blade groove, the saw-like blade grooves are provided on the left clamp arm and the right clamp arm respectively, the saw-like blade is inserted into the blade groove when the film clamp operating unit is closed, and since the saw-like blade uses a toothed cutting blade, when cutting the film, the multiple teeth on the toothed cutting blade are used to pierce and tear or cut the lower part 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, it becomes unnecessary to provide a oscillating heat melt film cutting mechanism on a fixed base, and by providing a film clamping and pulling mechanism on a turntable, the movement stroke of the film clamping and pulling mechanism can be reduced. Since the film is cut by the film pulling back operation, work efficiency can be improved by motor drive, and the wrapping machine related to the invention can be fully electrified. [Brief explanation of the drawing]

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

[0019]

[0020]

[0021]

[0022]

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION

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

[0025] The wrapping machine of the present invention is equipped with a film clamping and pulling mechanism. The film clamping and pulling mechanism is mounted on a turntable 100 and rotates together with the turntable 100 when wrapping is performed. The film clamping and pulling mechanism is movably mounted on the turntable 100 and is equipped with a drive motor. The drive motor 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. The film cutting mechanism is located between the film clamping actuation part of the film clamping and pulling mechanism and the boundary of the area where the packaged item is placed (the packaged item). When the film clamping and pulling mechanism is closed, the film cutting mechanism enters an activated state, reducing the bonding strength of the film and causing it to tear. When the film clamping and pulling mechanism is opened, the film cutting mechanism also opens.

[0026] The film clamp and pull-out mechanism is movable and performs film retraction and resetting. The movement of the film clamp and pull-out mechanism can be rotary. The rotation angle is sufficient to allow the film to be torn along the cutting blade in front of the workpiece. Because the rotation angle is small, it is suitable for electric drive. Embodiment 1 shown in Figures 1 to 4 illustrates an embodiment of such a rotary film pull-out mechanism. The film clamp and pull-out mechanism includes a mounting base 11. The mounting base 11 is mounted on a turntable 100 so as to be rotatable. A drive motor 12 is mounted on the mounting base 11. The drive motor 12 rotates together with the turntable 100 together with the mounting base 11 and drives the mounting base 11 to rotate relative to the turntable 100. A movable film clamp actuation part is provided on the mounting base 11. Reference numeral 111 in the drawings is a mounting base shaft fixed on the turntable 100. Reference numeral 112 in the drawings is a bearing seat provided on the mounting base 11.

[0027] The mounting base is provided with a travel support roller 13. The travel support roller 13 functions as a drive wheel. The travel support roller 13 is connected to a drive motor 12 via a radial shaft 14, and its rotation is driven. The mounting base moves along a circular trajectory with the rotation center, i.e., the shaft 111, as its center. A moving passive roller 131, which plays an auxiliary support role, is provided on the mounting base 11. Each of these rollers is provided above the mounting base 11. There is a hole in 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 located below the mounting base 11, in contact with the turntable 100 (fixed base 200). This keeps the height of the mounting base 11 low.

[0028] In the film clamp / pull-out mechanism, the rotation angle of the mounting base 11, that is, the travel distance of the movable film clamp operating part, can be controlled by the rotation speed of the drive motor 12. The current position can be maintained by stopping the drive of the drive motor 12. Preferably, the film clamp / pull-out mechanism can be provided with an additional positioning structure that positions the mechanism when it has rotated to the initial position on the turntable 100 (see Figure 2). The positioning structure includes an electromagnet 15, a fixed plate that is attracted to the electromagnet located on the turntable (located on the turntable or utilizing the side of the movement limit structure 16 as in this embodiment), and a movement limit structure 16 fixed on the turntable 100 that restricts the movement of the film clamp / pull-out mechanism. A sensor switch 17 can also be provided on the mounting base 11. The sensor switch 17 controls the turning on of the electromagnet 15, and when it has rotated to a specified position, the sensor switch 17 detects the fit part and turns on the electromagnet. The rotational stroke of the mounting base 11 along the film retraction direction can be controlled by the rotational speed of the drive motor 12, or by the alignment of the sensor switch 17 with the fitting part on the fixed base 200, or by a limiting part. Once the alignment by the sensor switch 17 is complete, a signal is emitted and the drive motor 12 stops driving. When the film clamp / pull-out mechanism rotates back to its initial position, it is positioned entirely on the turntable 100. When it rotates to a specified position in the film retraction direction (see Figure 3), depending on the film pull-out distance setting, the film clamp / pull-out mechanism may still be positioned on the turntable 100, or a portion of it may be positioned on 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 actuation part corresponding to the bottom of the film. Since the film cutting mechanism can move together with the movable film clamp actuation part, the structure becomes simpler and the film clamp actuation part automatically fits perfectly. The movable film clamping actuation unit 18 of the film clamping and pulling mechanism comprises a left clamping arm 181 and a right clamping arm 182. The film cutting mechanism includes a sawtooth blade 183 and a blade groove 184. The sawtooth blade 183 and the blade groove 184 are located on the left clamping arm 181 and the right clamping arm 182, respectively. The sawtooth blade 183 is inserted into the blade groove 184 when the film clamping actuation unit is closed. When cutting the film using a toothed cutting blade 185, the sawtooth blade 183 uses multiple teeth on the toothed cutting blade to pierce or cut the lower part of the film. The pierced portion of the film functions as a dot, a perforation, or a long cut. The film clamping and pulling mechanism pulls the film back along this cut, 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 to the same level.

[0031] The film clamp and pull-out mechanism is equipped 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. Each of the rotation centers of the left clamp arm 181 and the right clamp arm 182 is equipped with a gear. The two gears are meshed together, and one of the gears is connected to the drive motor 186 to become a drive gear.

[0032] The film clamp and pull-out mechanism is powered by a 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 a swing-type film heat melting mechanism, and the wrapping machine can be fully electrified.

[0033] In a preferred embodiment, before starting work, the components on the overall mounting base 11 are positioned on the turntable 100 by the cooperation of the electromagnet 15 and the limit structure 16, and when wrapping items placed on the turntable, the film head on the film rack is clamped to the film clamp / pull-out mechanism. The wrapping machine is started and the rotation of the turntable 100 is driven to wrap the film around the items. Once the film is wrapped around the items, the film clamp / pull-out mechanism releases the film head. As the film rack rises and falls and the turntable 100 rotates, the film is wrapped around the surface of the items. When the winding and wrapping process is complete, the turntable 100 rotates back to the front of the vertical column 300 of the film clamp / pull-out mechanism and stops. The film clamp drive motor 186 activates, and the movable film clamp actuation part 18 clamps the film, while the movable film cutting mechanism also closes, piercing and tearing the film. Driven by the drive motor 12, the roller 13 rolls. The mounting base 11 rotates around the axis 111 in the direction of pulling the film back. The film is pulled and torn. The film head remains at the film clamp / pull-out mechanism. The drive motor 12 drives in the opposite direction. The mounting base 11 returns to its initial position, the electromagnet activates to position the film clamp / pull-out mechanism, and the wrapping process for the next item begins again.

[0034] The movement of the film clamp and pull-out mechanism can also be a forward-and-back sliding type. The movement stroke only needs to be sufficient to allow the film to be smoothly torn along the cut edge, and because the movement distance is short, it is suitable for electric drive. Embodiment 2 shown in Figures 5 to 8 shows such a sliding film pulling embodiment. The film clamp and pull-out mechanism is equipped with a mounting base 21. The mounting base 21 is movably mounted on the turntable 100. A drive motor 22 is provided on the mounting base 21, and the drive motor is driven to slide forward and backward relative to the turntable 100. The drive motor 22 rotates together with the turntable 100 along with the mounting base 21. Rails are installed on the turntable 100 and the fixed base 200. Both sides of the mounting base 21 may slide directly along the rails 102 and 202, or they may slide along the rails 102 and 202 by means of a slider or other component. The rail 202 on the fixed base is aligned with the rail 102 on the turntable. This allows the rails 102 and 202, which are installed on the turntable 100 and the 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 be returned to the turntable 100. A movable film clamp actuation part 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 to a drive motor 22 via a drive shaft 24 and rotated as drive wheels. The travel support rollers 23 are provided on both the left and right sides of the mounting base 21 and roll along the upper surfaces of the turntable 100 and the fixed base 200 in the direction of the rails 102 and 202. A movable passive roller 231 that plays an auxiliary role may also be provided on the mounting base 21. Each of the above rollers is positioned on the upper side of the mounting base 21, and there are holes in the mounting base 21 so that only the bottom edge of the roller protrudes downward from the mounting base 21, so that only the bottom edge is located 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 clamp / pull-out mechanism, the transfer stroke of the mounting base 21 is controlled by the rotational speed of the drive motor 22, and the current position is maintained by stopping the drive motor 22. Preferably, the film clamp / pull-out mechanism is provided with an additional positioning structure. When it returns to the initial position of motion on the turntable 100 (see Figure 5), it is positioned. In this embodiment, the positioning structure can use a brake mechanism, and a braking mechanism comprising a brake electric power mechanism 251 and a rotating friction block 252 driven by the brake electric power mechanism 251 can be employed. Corresponding fixing plates 253 and 254 are provided on the surfaces of the turntable 100 and the fixed base 200, cooperating with the rotating friction block 252. The rotating friction block 252 can be covered with friction material or flexible material. A movement limit structure 26 for the film clamp / pull-out mechanism can be provided on the turntable 100. The brake electric power mechanism 251 can employ an electromagnetic attraction cylinder. The electromagnetic attraction cylinder is connected to the rotating friction block 252 via a link mechanism. When power is turned on, the suction cylinder is held, and the rotating friction block 252 rotates downward to engage with the fixed plate 253 or 254, thereby applying brakes. When power is turned off, the suction cylinder pops out, the rotating friction block 252 rotates upward to disengage from the fixed plate, and the brake mechanism is released. A sensor switch 27 can 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 it returns to a designated 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 the coordination between the sensor switch 27 and a corresponding component on the fixed base 200 (part of the fixed plate 254). 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 emits a signal to stop the drive of the drive motor 22. When the film clamp and pull-out mechanism rotates back to its initial position, the entire mechanism is positioned on the turntable 100, and when the movement in the film pull-back direction reaches a specified position (see Figure 6), the film clamp and pull-out mechanism may remain on the turntable 100 or be positioned partially or entirely above the fixed base 200, depending on the set film pull-out distance. Base plates may be provided on the top surface of both the turntable 100 and the fixed base 200 (or on only one of them) (in this embodiment, a base plate 201 is provided on the top surface of the fixed base 200), and 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 part are the same as in Embodiment 1 shown in Figures 1 to 4. The film cutting mechanism is also the same as in Embodiment 1, and is provided on the movable film clamp operating part. In Figures 5 to 8, if the reference numerals are the same as those in Figures 1 to 4, it means that they are the same. Of these, reference numeral 187 is the drive 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 battery 29, and the main controller of the wrapping machine controls the operation of each drive motor and brake electric power mechanism 251 via a wireless communication module 20, and is also connected to a sensor switch 27. Therefore, the wrapping operation of the wrapping machine can be achieved without using an air source or providing a swing-type film heat melting mechanism, and the wrapping machine can be fully electrified.

[0041] In Embodiment 2, before starting work, 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 up an item placed on the turntable, the film head on the film rack is clamped to the film clamp / pull-out mechanism. After starting the wrapping machine and driving the rotation of the turntable 100 to wrap the film around the item, the film clamp / pull-out mechanism releases the film head, and as the film rack rises and falls and the turntable 100 rotates, the film is wrapped around the surface of the item. When the winding and wrapping operation is complete and the turntable 100 has rotated back to the front of the vertical column 300 of the film clamp / pull-out mechanism (i.e., the turntable's initial position), the rails 102 and 202 positioned on the turntable 100 and the fixed base 200 are connected. The film clamp drive motor 186 is activated, and the movable film clamp actuation part 18 clamps the film, while the movable film cutting mechanism also closes, piercing and tearing the film. Driven by the drive motor 22, the roller 23 rolls, and the mounting base 21 moves along the rails 102 and 202 in the vertical direction (the direction in which the film is pulled and torn), causing the film to tear. The film head remains held in the film clamp / pull-out mechanism. The drive motor 22 operates in the opposite direction, and the mounting base 21 returns to its initial position. Induced by the sensor switch, the brake mechanism is activated, returning the film clamp / pull-out mechanism to its fixed position, and it is ready to perform the wrapping operation for the next item again.

[0042] As shown in Figures 9 and 10, based on Embodiment 2, a different electromagnetic positioning mechanism is used to position the film clamp / pull-out mechanism back to its initial position, and the position of the film clamp / pull-out mechanism can be maintained when it is pulled back. The electromagnetic positioning mechanism comprises an electromagnet 35 fixed to the bottom surface of the fixed frame 351 of the mounting base. When suction positioning with the turntable is required, the electromagnet 35 is ejected. In Figures 9 and 10, the same reference numerals as in Figures 1 to 8 mean the same elements.

[0043] Unless otherwise specified, the directions or positional relationships indicated in this invention, such as "up," "down," "vertical," "horizontal," "top," "bottom," "inside," "outside," and "axial," are the directions or positional relationships shown in the drawings and are provided solely for the convenience and simplicity of explaining this invention. They do not explicitly or implicitly suggest that a particular device or element must necessarily have a specific direction, specific directional structure, or operation. Therefore, the terms for directions or positional relationships described in this invention are used for illustrative purposes only and should not be understood as limitations on this patent. An ordinary technician in the art should be able to easily understand the specific meaning of the above terms in conjunction with the drawings and in more specific contexts.

[0044] Unless otherwise specified and explicitly stated, terms such as “installation,” “clamping installation,” and “connection” in this invention should be understood in a broad sense. For example, they can be understood as fixed connection, removable connection, or integral connection; they can be understood as direct connection, indirect connection, or internal communication between two elements. An ordinary technician in the art should understand the specific meaning of these terms in this invention based on the specific context.

[0045] The above are merely specific embodiments of the present invention, and the structural features of the present invention are not limited thereto. Any variations or modifications made by an expert in the art within the scope of the present invention are all covered by the present invention.

Claims

1. A wrapping machine equipped with a turntable and a fixed base, Equipped with a film clamping and pulling mechanism, The film clamp and pull-out mechanism is movably mounted to the turntable and is equipped with a drive motor. The aforementioned film clamp and pull-out mechanism includes a mounting base. The mounting base is connected to the turntable so as to be rotatable, and the drive motor is provided on the mounting base, The mounting base is driven by the drive motor and rotates relative to the turntable, and a film clamp operating part is movably provided on the mounting base. The drive motor, together with the mounting base, rotates together with the turntable, causing the film clamp and pull-out mechanism to pull the film back. The aforementioned film clamping and pulling mechanism is further equipped with a film cutting mechanism. The film cutting mechanism is located between the film clamp operating part of the film clamp / pull-out mechanism and the boundary of the area where the packaged item is placed, and is configured to reduce the bonding strength of the film so that the film is torn. A wrapping machine characterized by the following features.

2. The wrapping machine according to claim 1, characterized in that the mounting base is provided with a travel support roller, the travel support roller is connected to the drive motor so that its rotation can be driven, and it rolls along a circular trajectory with the rotation center of the mounting base as its center.

3. A wrapping machine equipped with a turntable and a fixed base, Equipped with a film clamping and pulling mechanism, The film clamp and pull-out mechanism is movably mounted to the turntable and is equipped with a drive motor. The drive motor can cause the film clamp / pull-out mechanism to pull the film back. Rails are provided on the turntable and the fixed base, and the rails on the fixed base are matched and fitted to the rails on the turntable, and the rails on the turntable and the fixed base are configured to connect at the initial position of the turntable. The aforementioned film clamp and pull-out mechanism includes a mounting base. The mounting base is provided so as to be movable relative to the turntable, and the drive motor is provided on the mounting base, which drives the mounting base to move back and forth relative to the turntable, and the mounting base can move in the film tearing direction and can also return to the turntable, and a film clamp operating part is provided on the mounting base, The aforementioned film clamping and pulling mechanism further includes a film cutting mechanism. The film cutting mechanism is located between the film clamp operating part of the film clamp / pull-out mechanism and the boundary of the area where the packaged item is placed, and is configured to reduce the bonding strength of the film so that the film is torn. A wrapping machine characterized by the following features.

4. The wrapping machine according to claim 3, characterized in that the film clamping and pulling mechanism includes a mounting base, the mounting base is provided with a travel support roller, the travel support roller is connected to the drive motor to drive rotation and rolls along a rail.

5. The wrapping machine according to any one of claims 1 to 4, characterized in that the film clamp and pull-out mechanism is provided with a positioning structure, which positions the film clamp and pull-out mechanism when it returns to its initial position on the turntable.

6. The wrapping machine according to claim 5, characterized in that the positioning structure includes an electromagnet, a fixed plate that is attracted to the electromagnet, and a limit structure that restricts the movement of the film clamp / pull-out mechanism fixed on the turntable.

7. A wrapping machine equipped with a turntable and a fixed base, Equipped with a film clamping and pulling mechanism, The film clamp and pull-out mechanism is movably mounted to the turntable and is equipped with a drive motor. The drive motor can cause the film clamp / pull-out mechanism to pull the film back. The aforementioned film clamping and pulling mechanism is further equipped with a film cutting mechanism. The film cutting mechanism is located between the film clamp operating part of the film clamp / pull-out mechanism and the boundary of the area where the packaged item is placed, and the film cutting mechanism is configured to reduce the bonding strength of the film so that the film is torn. The film cutting mechanism is fixed to the film clamp operating part and moves together with the film clamp operating part. The film clamp operating mechanism includes a left clamp arm and a right clamp arm. The film cutting mechanism includes a saw-shaped blade and a blade groove, The saw-like blade and blade groove are provided on the left clamp arm and the right clamp arm, respectively. The aforementioned saw-like blade is equipped with a toothed cutting blade having multiple teeth, The saw-like blade is inserted into the blade groove when the film clamp operating part is closed, and when cutting the film, the multiple teeth of the toothed cutting blade are used to pierce or tear the lower part of the film. A wrapping machine characterized by its features.

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