Film roll replacing device and packaging machine

Abstract

The utility model relates to the technical field of packaging machines, and particularly discloses a film roll replacing device, a packaging machine and a standby film roll storage mechanism which are used for storing standby film rolls and comprise a storage station used for placing the film rolls. The film roll transferring mechanism is used for transferring the standby film roll located on the storage station to the packaging machine; the film roll and film head clamping mechanism comprises fixed film clamping assemblies, and the fixed film clamping assemblies correspond to the storage stations one to one, are installed near the storage stations of the driving panel and are used for clamping film heads of standby film rolls; through the film roll transferring mechanism, the grabbing component can grab the standby film roll located on the storage station and move the standby film roll to the corresponding station of the packaging machine, then the clamping component carries the film head to move to the range of the packaging machine by pulling the film clamping assembly to rotate, and the film head or an unfolded film is installed on the packaging machine. Therefore, the standby film roll can be automatically replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a film roll replacement device and a packaging machine. Background Art

[0002] The axial stretch film packaging machines currently in use all require manual film changing, and a person must manually enter the rotating area of ​​the rotating arm to change the film. The equipment requires power off during the film changing process, which affects the working efficiency of the equipment as well as the safety of the personnel, posing certain safety hazards. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a film roll replacement device and a packaging machine, which have the advantages of rotating and replacing film rolls and solve the problems in the background technology.

[0004] The film roll replacement device and packaging machine of the utility model include:

[0005] A spare film roll storage mechanism, used for storing spare film rolls, including a storage station for placing film rolls;

[0006] The film roll transfer mechanism is used to transfer the spare film roll located at the storage station to the packaging machine;

[0007] The film roll and film head clamping mechanism comprises a fixed film clamping assembly, and the fixed film clamping assembly is installed near the storage station of the driving panel in a one-to-one corresponding storage station and is used for clamping the film head of the spare film roll.

[0008] In some embodiments, the spare film roll storage mechanism includes a driving device; the driving device includes a driving panel and a driving component, and the driving panel is connected end to end; a plurality of the storage stations are installed on the driving panel, and follow the driving panel to move in a cycle under the drive of the driving component.

[0009] In some embodiments, a positioning assembly is also included, the positioning assembly includes a plurality of limit units and a one-way limit mechanism, the limit unit is rotated and positioned after passing through the one-way limit mechanism; the plurality of limit units are arranged on the drive panel in a one-to-one corresponding storage position;

[0010] The one-way limiting mechanism is installed on the outside of the spare film roll storage mechanism, and the one-way limiting mechanism includes a fixed mounting frame, on which a swing arm and a limit stop are installed. The limit stop is installed on the fixed mounting frame and is located on one side of the swing arm, and is used to limit the swing arm from rotating to that side.

[0011] In some embodiments, the driving panel is an annular plate, and the bottom of the annular plate is rotatably connected to a frame;

[0012] The storage station is a film-receiving shaft provided on a conveying panel of a vertical driving device.

[0013] An installation station for installing a film roll transfer mechanism is provided in the center of the driving panel.

[0014] In some embodiments, the film roll transfer mechanism includes a movable bracket; a lifting bracket and a first driving unit for driving the lifting bracket to move up and down are vertically slidably connected to the movable bracket;

[0015] A film delivery arm is installed on the top of the lifting frame in a transverse sliding manner, and a grabbing component is installed at the beginning of the film delivery arm; the film delivery arm is driven by a second driving unit.

[0016] In some embodiments, the fixed membrane clamping assembly includes two membrane clamping plates, each of which is provided with a corresponding membrane clamping groove for the membrane head to enter, and the two membrane clamping grooves and the path therebetween form a membrane clamping station; a membrane clamping member and a pneumatic spring for driving the membrane clamping member are provided on the membrane clamping plate, and the end of the membrane clamping member away from the opening of the membrane clamping groove is rotatably connected to the membrane clamping plate.

[0017] In some embodiments, the film clamping station is arranged vertically with the spare film roll;

[0018] The fixed film clamping assembly also includes a support frame, and the support frame is installed on the top of the film clamping member.

[0019] In some embodiments, the film roll film head clamping mechanism further includes a traction film clamping assembly, the traction film clamping assembly includes a clamping component connected to the film head, and the width of the clamping component is adapted to the film clamping station;

[0020] The clamping component includes a fixed plate, a movable plate is provided above the fixed plate, the clamping component also includes a third driving unit for driving the movable plate to move toward the fixed plate to form a clamp, and the traction clamping film assembly also includes a rotating shaft and a driving motor for driving the rotating shaft to rotate.

[0021] A packaging machine, characterized in that it comprises a packaging frame and the film roll replacement device, wherein a rotatable rotating arm is provided on the top of the packaging frame, and one end of the rotating arm is vertically slidably connected to a film roll installation assembly;

[0022] The film roll installation assembly includes a mounting frame, one side of which is provided with a docking shaft for receiving a spare film roll, and a clamping drive mechanism for clamping and driving the film;

[0023] The clamping drive mechanism includes a driving shaft arranged parallel to the docking shaft, and a driven shaft used to clamp the driving shaft. The driven shaft is installed on the swing cover plate, and the swing cover plate can be buckled on the driving shaft through a gas rod. The driving shaft is driven by a motor.

[0024] In some embodiments, the positioning assembly includes two one-way limiting mechanisms, and the two one-way limiting mechanisms are installed on the sliding path of the film feeding arm. One of the one-way limiting mechanisms corresponds to the limiting unit setting on the drive panel, and the other one-way limiting mechanism corresponds to the limiting unit setting installed on the mounting frame.

[0025] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0026] 1. The utility model can enable the grabbing component to grab the spare film roll located at the storage station and move it to the corresponding station of the packaging machine through the film roll transfer mechanism, and then the grabbing component can move the film head to the packaging machine range by pulling the film clamping assembly to rotate, and the film head or the unfolded film can be installed on the packaging machine, so as to realize the automatic replacement of the spare film roll.

[0027] 2. The fixed film clamping assembly of the utility model is installed near the storage station, that is, when manually placing the spare film roll, the film head of the spare film roll can be unfolded and clamped, thereby avoiding the film head of the spare film roll from being messy after unfolding, and there is no need to manually unfold the spare film roll after the film roll on the packaging machine is used.

[0028] 3. The utility model uses a spare film roll storage mechanism that can circulate and rotate. When installing the spare film roll at the storage station, the storage stations can be moved closer to the workers one by one to ensure that the storage station for installing the spare film roll is always kept away from the storage station for removing the spare film roll, thereby effectively ensuring the safety of the personnel storing the spare film roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 This is a schematic diagram of the structure of the spare film roll storage mechanism of the utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the positioning component of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the one-way limiting mechanism of the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of the film roll transfer mechanism of the utility model;

[0034] Figure 5 This is a structural schematic diagram of the film roll transfer mechanism of the utility model installed at the installation station;

[0035] Figure 6This is a schematic diagram of the structure of the fixed film clamping assembly of the utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the traction clamping membrane assembly of the utility model;

[0037] Figure 8 It is a schematic diagram of the structure of the packaging machine of the utility model with a fixed film clamping assembly and a pulling film clamping assembly;

[0038] Fig. 9 This is a schematic diagram of the packaging machine structure in which the film roll replacement device is installed according to the utility model;

[0039] Fig.10 This is a schematic diagram of the structure when the swing cover plate in the film roll installation assembly of the utility model is opened;

[0040] Fig.11 This is a schematic diagram of the structure of the film roll installation assembly of the utility model when the swing cover is closed;

[0041] Fig.12 This is a schematic diagram of the rear view structure of the membrane roll installation assembly of the utility model.

[0042] In the figure: 1, spare film roll storage mechanism; 101, driving component; 102, driving panel; 103, storage station; 104, installation station;

[0043] 2. Film roll transfer mechanism; 201. Mobile bracket; 202. Lifting frame; 203. First drive unit; 204. Film delivery arm; 205. Grabbing component; 206. Second drive unit;

[0044] 3. Film roll and film head clamping mechanism;

[0045] 301, fixed film clamping assembly; 3011, film clamping plate; 3012, film clamping groove; 3013, film clamping member; 3014, pneumatic spring; 3015, film clamping station; 3016, support frame;

[0046] 302, traction clamping film assembly; 3021, clamping component; 30211, fixed plate; 30212, movable plate; 30213, third driving unit; 3022, rotating shaft; 3023, driving motor;

[0047] 4. Packaging frame; 401. Rotating arm; 402. Film roll mounting assembly; 4021. Mounting frame; 4022. Docking shaft; 4023. Driving shaft; 4024. Driven shaft; 4025. Swinging cover plate; 4026. Gas rod;

[0048] 5. Positioning assembly; 501. Limiting unit; 502. One-way limiting mechanism; 5021. Fixed mounting frame; 5022. Swing arm; 5023. Limiting dead stop. DETAILED DESCRIPTION

[0049] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0050] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0051] See also Figure 1 - Figure 8 The film roll replacement device of the utility model comprises:

[0052] See also Figure 1 The spare film roll storage mechanism 1 is used to store spare film rolls, and includes a storage station 103 for placing film rolls. The spare film roll storage mechanism 1 includes a driving device; the driving device includes a driving panel 102 and a driving component 101, and the driving panel 102 is connected end to end; a plurality of storage stations 103 are installed on the driving panel 102, and follow the driving panel 102 to move cyclically under the drive of the driving component 101, and the driving panel 102 is an annular plate, and the bottom of the annular plate is rotatably connected to a frame; the storage station 103 is a film shelf shaft provided on the conveying panel of the vertical driving device;

[0053] See also Figure 1 - Figure 3 , further comprising a positioning assembly 5, the positioning assembly 5 comprising a plurality of limiting units 501 and a one-way limiting mechanism 502, the limiting unit 501 being rotated and positioned after passing through the one-way limiting mechanism 502; the plurality of limiting units 501 being arranged on the driving panel 102 in correspondence with the storage stations 103;

[0054] The one-way limiting mechanism 502 is installed on the outside of the spare film roll storage mechanism 1, and the one-way limiting mechanism 502 includes a fixed mounting frame 5021, on which a swing arm 5022 and a limit stop 5023 are installed. The limit stop 5023 is installed on the fixed mounting frame 5021 and is located on one side of the swing arm 5022, and is used to limit the swing arm 5022 from rotating to that side.

[0055] See also Figure 4 and Figure 5 The film roll transfer mechanism 2 is used to transfer the spare film roll located at the storage station 103 to the packaging machine. The film roll transfer mechanism 2 includes a movable bracket 201, and a lifting bracket 202 and a first driving unit 203 for driving the lifting bracket 202 to move up and down are vertically slidably connected to the movable bracket 201;

[0056] A film delivery arm 204 is installed on the top of the lifting frame 202 for horizontal sliding. A grabbing component 205 is installed at the beginning of the film delivery arm 204. The grabbing component 205 is a grabbing shaft arranged parallel to the diaphragm shaft. The film delivery arm 204 is driven by a second driving unit 206. The grabbing shaft carried by the film delivery arm 204 is coaxial with the film shelf shaft when the first driving component 101 is not started.

[0057] See also Figure 5 - Figure 8 , the film roll and film head clamping mechanism 3 includes a fixed film clamping assembly 301, and the fixed film clamping assembly 301 is installed near the storage station 103 of the driving panel 102 in a one-to-one correspondence with the storage station 103 for clamping the film head of the spare film roll; the fixed film clamping assembly 301 includes two film clamping plates 3011, and the two film clamping plates 3011 are respectively provided with film clamping grooves 3012 for the film head to enter, and the two film clamping grooves 3012 and the path therebetween form a film clamping station 3015; the film clamping plate 3011 is provided with a film clamping member 3013 and a pneumatic spring 3014 for driving the film clamping member 3013, and the end of the film clamping member 3013 away from the opening of the film clamping groove 3012 is rotatably connected to the film clamping plate 3011;

[0058] The film roll film head clamping mechanism 3 also includes a film traction clamping assembly 302, and the film traction clamping assembly 302 includes a clamping component 3021 connected to the film head, and the width of the clamping component 3021 is adapted to the film clamping station 3015;

[0059] The clamping component 3021 includes a fixed plate 30211, and a movable plate 30212 is provided above the fixed plate 30211. The clamping component 3021 also includes a third driving unit 30213 for driving the movable plate 30212 to move toward the fixed plate 30211 to form a clamp. The traction clamping assembly 302 also includes a rotating shaft 3022 and a driving motor 3023 for driving the rotating shaft 3022 to rotate.

[0060] Furthermore, an installation station 104 for installing the film roll transfer mechanism 2 is provided in the center of the driving panel 102. The installation station 104 does not require an additional installation space for the film roll transfer mechanism 2, and can make the active space in the film roll transfer mechanism 2 overlap with the space above the spare film roll storage mechanism 1, making its layout more reasonable.

[0061] A plurality of storage stations 103 are installed on the surface of the annular plate at equal distances with the center of the annular plate as a base point. This arrangement can further ensure that different stations can overlap after switching.

[0062] See also Figure 5 , further, the film clamping station 3015 is vertically provided with a spare film roll; the fixed film clamping assembly 301 also includes a support frame 3016, and the support frame 3016 is installed on the top of the film clamping member 3013;

[0063] Through the above technical scheme, the film can bypass the support frame 3016 and gather to form a film head before entering the film clamping station 3015. The setting of the vertical spare film roll at the film clamping station 3015 can make the film head of the spare film roll gathered and clamped, thereby effectively increasing the strength of the film head and avoiding the film head from breaking and hanging on the equipment during clamping; and the setting of the support frame 3016 can also effectively change the length of the film between the spare film roll and the film clamping station 3015, thereby adapting to the moving range of the traction film clamping assembly 302 to carry the film head.

[0064] See also Figure 5 Furthermore, the film clamping member 3013 rotates with the opening direction of the film clamping groove 3012 as the closest rotation path, so that the film clamping member 3013 moves from the opening direction of the film clamping groove 3012 to the closing direction, thereby effectively ensuring the clamping of the film head located in the film clamping groove 3012, and ensuring that the film head will not fall off after contacting the film clamping member 3013;

[0065] The steps of using this embodiment are as follows:

[0066] S1. The driving device of the spare film roll storage mechanism 1 can be directly installed on the ground, so that the storage station 103 can be set vertically, and the one-way limiting mechanism 502 in the positioning assembly 5 is installed near the spare film roll storage mechanism 1, and corresponds to the limiting unit 501 installed on the driving panel 102;

[0067] S2, start the driving component 101 in the spare film roll storage mechanism 1, so that the driving panel 102 carries the limiting unit 501 through the one-way limiting mechanism 502 in one direction, so that the swing arm 5022 rotates and then rotates, so that the limiting unit 501 abuts against the swing arm 5022, thereby realizing the precise positioning of the storage station 103;

[0068] S3, then manually and effectively install the spare film roll on the storage station 103; wherein the spare film roll storage mechanism 1 that can circulate and rotate can ensure that the storage station 103 for installing the spare film roll is always kept away from the storage station 103 for removing the spare film roll by making the storage stations 103 approach the manual workers one by one when installing the spare film roll to the storage station 103, thereby effectively ensuring the safety of the personnel storing the spare film roll;

[0069] That is, while the device is convenient for storing a plurality of spare film rolls, it can also rotate to move different spare film rolls to the same position, thereby making it convenient for the film roll transfer mechanism 2 to clamp the spare film rolls.

[0070] S4. Since the fixed film clamping assembly 301 of the device is installed near the storage station 103, the film head of the spare film roll can be unfolded when the spare film roll is placed manually, and then the film head of the film roll is placed into the film clamping station 3015 and clamped by the film clamping member 3013 driven by the pneumatic spring 3014, so that the film head of the spare film roll can be prevented from being messy after unfolding. After the film roll on the packaging machine is used, the clamped film head does not need to be manually unfolded.

[0071] S5. When the packaging machine needs to replace the film roll, the lifting frame 202 in the film roll transfer mechanism 2 carries the film delivery arm 204 and the grabbing component 205 to move, so that the grabbing component 205 can grab the spare film roll located on the storage station 103, and then the lifting frame 202 carrying the spare film roll is raised by the first driving unit 203, so that the spare film roll located at the storage station 103 can be taken down, and then the second driving unit 206 is used to make the film delivery arm 204 carry the spare film roll and move to the corresponding station of the packaging machine, and then the film clamping assembly 302 is pulled and rotated to make the clamping component 3021 carry the film head and move to the range of the packaging machine, and the film head or the unfolded film is installed on the packaging machine.

[0072] Embodiment 2:

[0073] See also Fig. 9 - Fig.12 A packaging machine comprises a packaging frame 4, the above-mentioned film roll replacement device, the top of the packaging frame 4 is provided with a rotatable rotating arm 401, one end of the rotating arm 401 is vertically slidably connected with a film roll installation assembly 402;

[0074] The film roll installation assembly 402 includes a mounting frame 4021, and one side of the mounting frame 4021 is provided with a docking shaft 4022 for receiving a spare film roll, and a clamping drive mechanism for clamping and driving the film;

[0075] The clamping drive mechanism includes a driving shaft 4023 arranged parallel to the docking shaft 4022, and a driven shaft 4024 used to form a clamp with the driving shaft 4023. The driven shaft 4024 is installed on the swing cover plate 4025, and the swing cover plate 4025 can be buckled on the driving shaft 4023 through the gas rod 4026. The driving shaft 4023 is driven by a motor.

[0076] The positioning assembly 5 includes two one-way limiting mechanisms 502, which are installed on the sliding path of the film feeding arm 204. One of the one-way limiting mechanisms 502 corresponds to the limiting unit 501 on the driving panel 102, and the other one-way limiting mechanism 502 corresponds to the limiting unit 501 installed on the mounting frame 4021.

[0077] When this embodiment is used, the difference from the first embodiment is step S5:

[0078] S5.1: When the packaging machine using the film roll needs to replace the film roll, there will be a film core on the docking shaft 4022; the film roll installation assembly 402 for installing the film roll in the packaging machine rotates under the driving arm, so that the limiting unit 501 on the installation frame 4021 carried by it passes through the corresponding one-way limiting mechanism 502 and then stops rotating, thereby realizing the precise positioning of the docking shaft 4022 in the film roll installation assembly 402;

[0079] At this time, the docking shaft 4022 and a storage station 103 where no spare film roll is installed are both located on the sliding path of the film delivery arm 204 in the film roll transfer mechanism 2;

[0080] S5.2: The film delivery arm 204 in the film roll transfer mechanism 2 carries the grabbing component 205 and moves to the top of the docking shaft 4022 under the drive of the second driving unit 206, and then the grabbing component 205 grabs the film core on the docking shaft 4022 under the activation of the first driving unit 203, and then the grabbing component 205 is reset to the original position under the activation of the first driving unit 203 and the second driving unit 206;

[0081] Since the storage station 103 located on the path of the film delivery arm 204 does not have a spare film roll, the film core can be placed on the vacant storage station 103;

[0082] S5.3: The driving component 101 in the spare film roll storage mechanism 1 causes the driving panel 102 to carry the storage station 103 where the spare film roll is placed to rotate, and overlap with the original vacant storage station 103 under the positioning component 5, thereby reversing the steps in S5.2, that is, the grabbing component 205 can carry the spare film roll and move to the docking shaft 4022 of the mounting frame 4021;

[0083] S5.4: The driving motor 3023 in the traction film clamping assembly 302 causes the rotating shaft 3022 to carry the film head on the spare film roll through the clamping component 3021 to bypass the mounting frame 4021. At this time, the film between the film head and the spare film roll on the docking shaft 4022 will fit on the driving shaft 4023, and then the swing cover plate 4025 carries the driven shaft 4024 to buckle on the film through the gas rod 4026, thereby completing the automatic replacement of the film roll.

[0084] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A film roll replacement device, characterized in that: include: A spare film roll storage mechanism (1), used for storing spare film rolls, comprising a storage station (103) for placing the film rolls; A film roll transfer mechanism (2) is used to transfer the spare film roll located at the storage station (103) to the packaging machine; The film roll and film head clamping mechanism (3) comprises a fixed film clamping assembly (301), wherein the fixed film clamping assembly (301) is installed near the storage station (103) of the drive panel (102) in a one-to-one correspondence with the storage station (103) for clamping the film head of the spare film roll.

2. A film roll replacement device according to claim 1, characterized in that: The spare film roll storage mechanism (1) comprises a driving device; the driving device comprises a driving panel (102) and a driving component (101), and the driving panel (102) is connected end to end; a plurality of storage stations (103) are installed on the driving panel (102), and are driven by the driving component (101) to move cyclically following the driving panel (102).

3. A film roll replacement device according to claim 2, characterized in that: The device also includes a positioning assembly (5), wherein the positioning assembly (5) includes a plurality of limiting units (501) and a one-way limiting mechanism (502), wherein the limiting unit (501) is rotated and positioned after passing through the one-way limiting mechanism (502); and the plurality of limiting units (501) are arranged on the driving panel (102) in a one-to-one correspondence with the storage stations (103); The one-way limiting mechanism (502) is installed on the outside of the spare film roll storage mechanism (1), and the one-way limiting mechanism (502) includes a fixed mounting frame (5021), and a swing arm (5022) and a limit stop (5023) are installed on the fixed mounting frame (5021). The limit stop (5023) is installed on the fixed mounting frame (5021) and is located on one side of the swing arm (5022) for limiting the swing arm (5022) from rotating toward that side.

4. A film roll replacement device according to claim 3, characterized in that: The driving panel (102) is an annular plate, the bottom of which is rotatably connected to a frame; The storage station (103) is a film-receiving shaft provided on a conveying panel of a vertical driving device; An installation station (104) for installing a film roll transfer mechanism (2) is provided in the center of the interior of the driving panel (102).

5. A film roll replacement device according to claim 4, characterized in that: The film roll transfer mechanism (2) comprises a movable bracket (201); a lifting bracket (202) and a first driving unit (203) for driving the lifting bracket (202) to move up and down are vertically slidably connected to the movable bracket (201); A film delivery arm (204) is installed on the top of the lifting frame (202) in a transversely slidable manner, and a grabbing component (205) is installed at the beginning of the film delivery arm (204); the film delivery arm (204) is driven by a second driving unit (206).

6. A film roll replacement device according to claim 1, characterized in that: The fixed film clamping assembly (301) includes two film clamping plates (3011), each of the two film clamping plates (3011) is provided with a corresponding film clamping groove (3012) for the film head to enter, and the two film clamping grooves (3012) and the path therebetween form a film clamping station (3015); the film clamping plate (3011) is provided with a film clamping member (3013) and a pneumatic spring (3014) for driving the film clamping member (3013), and the end of the film clamping member (3013) away from the opening of the film clamping groove (3012) is rotatably connected to the film clamping plate (3011).

7. A film roll replacement device according to claim 6, characterized in that: The film clamping station (3015) is arranged vertically with a spare film roll; The fixed film clamping assembly (301) further comprises a support frame (3016), and the support frame (3016) is installed on the top of the film clamping member (3013).

8. A film roll replacement device according to claim 7, characterized in that: The film roll and film head clamping mechanism (3) also includes a traction and film clamping assembly (302), and the traction and film clamping assembly (302) includes a clamping component (3021) connected to the film head, and the width of the clamping component (3021) is compatible with the film clamping station (3015).

9. A packaging machine, characterized in that: It comprises a packaging frame (4), and a film roll replacement device according to any one of claims 1 to 8, wherein a rotatable rotating arm (401) is provided on the top of the packaging frame (4), and one end of the rotating arm (401) is vertically slidably connected to a film roll installation assembly (402); The film roll installation assembly (402) comprises a mounting frame (4021), one side of the mounting frame (4021) is provided with a docking shaft (4022) for receiving a spare film roll, and a clamping drive mechanism for clamping and driving a film; The clamping drive mechanism comprises a driving shaft (4023) arranged parallel to a docking shaft (4022), and a driven shaft (4024) used to form a clamp with the driving shaft (4023); the driven shaft (4024) is mounted on a swing cover plate (4025), and the swing cover plate (4025) can be buckled on the driving shaft (4023) through a gas rod (4026); and the driving shaft (4023) is driven by a motor.

10. A packaging machine according to claim 9, characterized in that: It also includes a positioning component (5), which includes two one-way limiting mechanisms (502) and a plurality of limiting units (501). The two one-way limiting mechanisms (502) are installed on the sliding path of the film feeding arm (204), one of the one-way limiting mechanisms (502) corresponds to the limiting unit (501) on the driving panel (102), and the other one-way limiting mechanism (502) corresponds to the limiting unit (501) installed on the mounting frame (4021).

Images