Film roll replacement device and packaging machine

Abstract

A film roll replacement device and a packaging machine. The film roll replacement device comprises: a standby film roll storage mechanism which is configured for storage of standby film rolls and comprises storage stations for placement of the film rolls; a film roll transfer mechanism which is configured to transfer a standby film roll located on a storage station to a packaging machine; and a film-roll film head clamping mechanism, which comprises fixed film-clamping assemblies, the fixed film-clamping assemblies corresponding to the storage stations on a one-to-one basis, being mounted near the storage stations on a driving panel, and being configured to clamp the film heads of the standby film rolls. By means of the film roll transfer mechanism, a gripping component can grip a standby film roll located on a storage station and move same to a corresponding station of the packaging machine. Then, by means of rotation of a traction and film-clamping assembly of the film-roll film head clamping mechanism, a clamping component carries the film head to the packaging machine, and the film head or an unrolled film is mounted on the packaging machine, thereby realizing automatic replacement of the standby film roll.

Description

Film roll replacing device and packaging machine TECHNICAL FIELD

[0001] The present application relates to the technical field of packaging machines, in particular to a film roll replacing device and a packaging machine. BACKGROUND

[0002] The axial stretch film packaging machines currently in use all need to be manually replaced with film. The film is replaced by manually entering the rotating arm rotating area, and the equipment needs to be powered off during the film replacement process, which affects the working efficiency of the equipment and the safety of the personnel, and there is a certain safety hazard. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a film roll replacing device and a packaging machine, which has the advantage of rotating to replace the film roll and solves the problems in the background art.

[0004] The film roll replacing device and the packaging machine of the present application comprise: a standby film roll storage mechanism for storing standby film rolls, comprising a storage station for placing film rolls;

[0005] A film roll transfer mechanism is used to transfer the standby film roll located on the storage station to the packaging machine;

[0006] A film roll head clamping mechanism comprises a fixed film clamping assembly, which is installed near the storage station of the drive panel one-to-one corresponding to the storage station and is used to clamp the film head of the standby film roll.

[0007] In some embodiments, the standby film roll storage mechanism comprises a driving device; the driving device comprises a drive panel and a driving component, and the drive panel is connected end to end; a plurality of storage stations are installed on the drive panel and move in a loop following the drive panel under the driving of the driving component.

[0008] In some embodiments, a positioning assembly is further included, which comprises a plurality of limiting units and a one-way limiting mechanism, and the limiting units are positioned by rotating after passing through the one-way limiting mechanism; a plurality of limiting units are arranged on the drive panel one-to-one corresponding to the storage stations;

[0009] The one-way limiting mechanism is installed on the outside of the standby film roll storage mechanism, and comprises a fixed mounting bracket, an oscillating arm and a limiting dead stopper, the limiting dead stopper is installed on the fixed mounting bracket and located on one side of the oscillating arm, and is used to limit the rotation of the oscillating arm to that side.

[0010] In some embodiments, the drive panel is a ring-shaped plate, and the bottom of the ring-shaped plate is rotatably connected with a rack;

[0011] The storage station is a film placing shaft arranged on the conveying panel of the vertical driving device.

[0012] The inner center of the driving panel is provided with a mounting station for mounting the film roll transfer mechanism.

[0013] In some embodiments, the film roll transfer mechanism comprises a moving support, a lifting frame vertically slidingly connected to the moving support, and a first driving unit for driving the lifting frame to move up and down.

[0014] A film feeding arm is transversely slidingly mounted on the top of the lifting frame, the film feeding arm is provided with a mounting grabbing component at the beginning end, and the film feeding arm is driven by a second driving unit.

[0015] In some embodiments, the fixed film clamping assembly comprises two film clamping plates, film clamping grooves for the film head to enter are correspondingly formed on the two film clamping plates, and the two film clamping grooves and the path therebetween form a film clamping station; the film clamping plates are provided with film clamping members and pneumatic springs for driving the film clamping members, and the film clamping members are rotationally connected between the film clamping plates and the ends away from the openings of the film clamping grooves.

[0016] In some embodiments, the film clamping station is vertically provided with a spare film roll.

[0017] The fixed film clamping assembly further comprises a support frame mounted on the top of the film clamping members.

[0018] In some embodiments, the film roll film head clamping mechanism further comprises a traction film clamping assembly, the traction film clamping assembly comprises a grabbing component connected to the film head, and the width of the grabbing component is adapted to the film clamping station.

[0019] The grabbing component comprises a fixed plate, an active plate is arranged above the fixed plate, the grabbing component further comprises a third driving unit for driving the active plate to move towards the fixed plate to form clamping, and the traction film clamping assembly further comprises a rotating shaft and a driving motor for driving the rotating shaft to rotate.

[0020] A packaging machine, characterized in that it comprises a packaging machine frame and a film roll replacing device, a rotatable rotating arm is arranged on the top of the packaging machine frame, and a film roll mounting assembly is vertically slidingly connected to one end of the rotating arm.

[0021] The film roll mounting assembly comprises a mounting frame, a butt joint shaft for receiving a spare film roll is arranged on one side of the mounting frame, and a clamping driving mechanism for clamping and driving the film is arranged on the butt joint shaft.

[0022] The clamping driving mechanism comprises a driving shaft arranged in parallel with the butt joint shaft, and a driven shaft for clamping with the driving shaft, the driven shaft is mounted on a swing cover plate, the swing cover plate can be buckled on the driving shaft through an air cylinder, and the driving shaft is driven by a motor.

[0023] In some embodiments, the positioning assembly comprises 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 on the driving panel, and the other one-way limiting mechanism corresponds to the limiting unit installed on the mounting rack.

[0024] Compared with the prior art, the application has the following beneficial effects: 1. The film roll transfer mechanism can move the spare film roll on the storage station to the corresponding station of the packaging machine, and then the film head is moved to the packaging machine range by rotating the traction film clamping assembly, and the film head or the unwound film is installed on the packaging machine, that is, the spare film roll is automatically replaced.

[0025] 2. The fixed film clamping assembly is installed near the storage station, so that the film head of the spare film roll can be unwound and clamped when the spare film roll is placed by the worker, thereby avoiding the film head of the spare film roll from being messy after unwinding, and the worker does not need to manually unwind the spare film roll after the film roll on the packaging machine is used up.

[0026] 3. The spare film roll storage mechanism can rotate circularly, and when the spare film roll is installed on the storage station, the storage station can be gradually moved close to the worker, so that the storage station for installing the spare film roll is always kept away from the storage station for taking down the spare film roll, thereby effectively ensuring the safety of the worker when storing the spare film roll. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate certain illustrative embodiments of the application and together with the description serve to explain the application. In the drawings:

[0028] FIG. 2 is a structural schematic diagram of the positioning assembly of the application;

[0029] FIG. 3 is a structural schematic diagram of the one-way limiting mechanism of the application;

[0030] FIG. 4 is a structural schematic diagram of the film roll transfer mechanism of the application;

[0031] FIG. 5 is a structural schematic diagram of the film roll transfer mechanism installed on the mounting station of the application;

[0032] FIG. 6 is a structural schematic diagram of the fixed film clamping assembly of the application;

[0033] FIG. 7 is a structural schematic diagram of the traction film clamping assembly of the application;

[0034] FIG. 8 is a structural schematic diagram of the packaging machine of the application with the fixed film clamping assembly and the traction film clamping assembly;

[0035] Figure 9 is a schematic diagram of the structure of a packaging machine provided with the film roll mounting and replacing device of the present application;

[0036] Figure 10 is a schematic diagram of the structure of the film roll mounting assembly of the present application when the swing cover is open;

[0037] Figure 11 is a schematic diagram of the structure of the film roll mounting assembly of the present application when the swing cover is closed;

[0038] Figure 12 is a schematic diagram of the structure of the film roll mounting assembly of the present application from the back.

[0039] In the figures: 1, spare film roll storage mechanism; 101, driving component; 102, driving panel; 103, storage station; 104, mounting station;

[0040] 2, film roll transfer mechanism; 201, moving support; 202, lifting frame; 203, first driving unit; 204, film feeding arm; 205, grabbing component; 206, second driving unit;

[0041] 3, film roll film head clamping mechanism;

[0042] 301, fixed film clamping assembly; 3011, film clamping plate; 3012, film clamping groove; 3013, film clamping piece; 3014, pneumatic spring; 3015, film clamping station; 3016, support frame;

[0043] 302, traction film clamping assembly; 3021, clamping component; 30211, fixed plate; 30212, movable plate; 30213, third driving unit; 3022, rotating shaft; 3023, driving motor;

[0044] 4, packaging machine frame; 401, rotating arm; 402, film roll mounting assembly; 4021, mounting frame; 4022, butt joint shaft; 4023, driving shaft; 4024, driven shaft; 4025, swing cover; 4026, pneumatic rod;

[0045] 5, positioning assembly; 501, limiting unit; 502, one-way limiting mechanism; 5021, fixed mounting frame; 5022, swing arm; 5023, limiting dead stop. DETAILED DESCRIPTION

[0046] In the following, a plurality of embodiments of the present application will be disclosed with reference to the drawings. For the purpose of clear illustration, many details of the physical objects will be described in the following description. However, it should be understood that these details of the physical objects should not be used to limit the present application. That is, in some embodiments of the present application, these details of the physical objects are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0047] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and is not intended to particularly indicate the order or sequence, nor to limit the present application, which is merely to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0048] Referring to FIGS. 1-8, the film roll replacing device of the present application comprises:

[0049] Referring to FIG. 1, the standby film roll storage mechanism 1 is used for storing standby film rolls, comprising a storage station 103 for placing film rolls, and the standby 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 follow the driving panel 102 to move circularly under the driving of the driving component 101, and the driving panel 102 is a ring-shaped plate, and the bottom of the ring-shaped plate is rotatably connected with a rack; the storage station 103 is a film placing shaft provided on the conveying panel of the vertical driving device;

[0050] Referring to FIGS. 1-3, it further comprises a positioning assembly 5, and the positioning assembly 5 comprises a plurality of limiting units 501 and a one-way limiting mechanism 502, and the limiting units 501 are positioned by rotating back after passing through the one-way limiting mechanism 502; a plurality of limiting units 501 are provided on the driving panel 102 one by one corresponding to the storage stations 103;

[0051] The one-way limiting mechanism 502 is installed on the outside of the standby film roll storage mechanism 1, and the one-way limiting mechanism 502 comprises a fixed mounting frame 5021, a swing arm 5022 and a limiting dead stop 5023 are installed on the fixed mounting frame 5021, the limiting dead stop 5023 is installed on the fixed mounting frame 5021 and located on one side of the swing arm 5022, and is used for limiting the swing arm 5022 to rotate to the side.

[0052] Referring to FIGS. 4 and 5, the film roll transferring mechanism 2 is used for transferring the standby film roll located on the storage station 103 to the packaging machine, and the film roll transferring mechanism 2 comprises a moving bracket 201, a lifting frame 202 and a first driving unit 203 for driving the lifting frame 202 to move up and down are vertically and slidingly connected on the moving bracket 201;

[0053] The top of the lifting frame 202 is transversely slidably installed with a film feeding arm 204, the initial end of the film feeding arm 204 is provided with a mounting grabbing component 205, the grabbing component 205 is a grabbing shaft provided in parallel with the diaphragm shaft; the film feeding arm 204 is driven by a second driving unit 206; the grabbing shaft carried by the film feeding arm 204 is coaxial with the film storage shaft when the first driving component 101 is not started;

[0054] Please refer to FIG. 5-8, the film roll head clamping mechanism 3, including a fixed film clamping assembly 301, the fixed film clamping assembly 301 is installed near the storage station 103 of the driving panel 102 in one-to-one correspondence with the storage station 103 for clamping the film head of the standby film roll; the fixed film clamping assembly 301 includes two film clamping plates 3011, both of which are provided with a film clamping groove 3012 for the film head to enter, and the path between the two film clamping grooves 3012 forms a film clamping station 3015; the film clamping plate 3011 is provided with a film clamping piece 3013 and a pneumatic spring 3014 for driving the film clamping piece 3013, and the end of the film clamping piece 3013 away from the opening of the film clamping groove 3012 is rotatably connected with the film clamping plate 3011;

[0055] The film roll head clamping mechanism 3 further includes a traction film clamping assembly 302, the traction film clamping assembly 302 includes a clamping component 3021 connected with the film head, and the width of the clamping component 3021 is adapted to the film clamping station 3015;

[0056] The clamping component 3021 includes a fixed plate 30211, an active plate 30212 is arranged above the fixed plate 30211, the clamping component 3021 further includes a third driving unit 30213 for driving the active plate 30212 to move towards the fixed plate 30211 to form clamping, and the traction film clamping assembly 302 further includes a rotating shaft 3022 and a driving motor 3023 for driving the rotating shaft 3022 to rotate.

[0057] Further, the inside of the driving panel 102 is centrally provided with a mounting station 104 for mounting the film roll transfer mechanism 2, the mounting station 104 is arranged so that the film roll transfer mechanism 2 does not need additional mounting space, and the active space part of the film roll transfer mechanism 2 can coincide with the space above the standby film roll storage mechanism 1, so that the layout is more reasonable;

[0058] The 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 the base point, which can further ensure that different stations after switching can coincide.

[0059] Please refer to FIG. 5, further, the film clamping station 3015 is arranged vertically to the standby film roll; the fixed film clamping assembly 301 further includes a support frame 3016 installed on the top of the film clamping piece 3013;

[0060] By the technical scheme, the film can be gathered to form a film head by the support frame 3016 and then enter the film clamping station 3015, and the film head of the standby film roll can be clamped after gathering, so that the strength of the film head is effectively increased, and the film head is prevented from being broken and hung on the equipment during clamping; and the support frame 3016 can also effectively change the length of the film between the standby film roll and the film clamping station 3015, so as to adapt to the moving range of the traction film clamping assembly 302 carrying the film head.

[0061] Referring to FIG. 5, further, the film clamping piece 3013 rotates along a rotation path closest to the opening direction of the film clamping groove 3012, so that the film clamping piece 3013 moves from the opening direction to the closing direction of the film clamping groove 3012, thereby effectively ensuring clamping of the film head in the film clamping groove 3012 and ensuring that the film head does not fall off after contacting the film clamping piece 3013.

[0062] The steps of using the embodiment are as follows: S1, the driving device of the standby film roll storage mechanism 1 can be directly installed on the ground, so that the storage station 103 can be vertically arranged, and the one-way limiting mechanism 502 in the positioning assembly 5 can be installed near the standby film roll storage mechanism 1 and correspond to the limiting unit 501 installed on the driving panel 102;

[0063] S2, the driving part 101 in the standby film roll storage mechanism 1 is started, so that the driving panel 102 carrying the limiting unit 501 passes through the one-way limiting mechanism 502 in one direction, and the swing arm 5022 is rotated and turned, so that the limiting unit 501 abuts against the swing arm 5022, thereby realizing accurate positioning of the storage station 103;

[0064] S3, then the standby film roll is manually installed on the storage station 103; wherein the standby film roll storage mechanism 1 capable of rotating circularly can ensure that the storage station 103 on which the standby film roll is installed is always kept away from the storage station 103 from which the standby film roll is removed when the standby film roll is installed on the storage station 103, thereby effectively ensuring the safety of personnel storing the standby film roll;

[0065] That is, the device can not only store multiple standby film rolls, but also rotate to move different standby film rolls to the same position, thereby facilitating clamping of the standby film roll by the film roll transfer mechanism 2.

[0066] S4, because the fixed film clamping assembly 301 of the device is installed near the storage station 103, that is, the film head of the standby film roll can be unfolded when the worker places the standby film roll, 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 standby film roll can be unfolded and clamped. After the film head of the film roll is used on the packaging machine, there is no need for manual film unfolding;

[0067] 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 feeding arm 204 and the grabbing component 205 to move, so that the grabbing component 205 can grab the standby film roll located on the storage station 103, and then the lifting frame 202 carries the standby film roll to rise through the first driving unit 203, so that the standby film roll located on the storage station 103 can be removed, and then the film feeding arm 204 carries the standby film roll to move to the corresponding station of the packaging machine through the second driving unit 206, and then the film head is carried to the packaging machine through the rotation of the traction film clamping assembly 302. The film head or the unfolded film is installed on the packaging machine.

[0068] Embodiment two: please refer to FIG. 9-FIG. 12, a packaging machine, comprising a packaging machine frame 4, the film roll replacing device described above, the top of the packaging machine frame 4 is provided with a rotatable rotating arm 401, one end of the rotating arm 401 is vertically and slidingly connected with a film roll mounting assembly 402;

[0069] The film roll mounting assembly 402 comprises a mounting frame 4021, one side of the mounting frame 4021 is provided with a butt joint shaft 4022 for receiving a standby film roll, and a clamping driving mechanism for clamping and driving the film;

[0070] The clamping driving mechanism comprises a driving shaft 4023 arranged in parallel with the butt joint shaft 4022, and a driven shaft 4024 for forming clamping 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 air cylinder 4026, and the driving shaft 4023 is driven by a motor.

[0071] The positioning assembly 5 comprises two one-way limiting mechanisms 502, which are installed on the sliding path of the film feeding arm 204. One of the two 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.

[0072] The embodiment is used, and the difference with the embodiment one is in the step S5: S5.1: when the packaging machine of the film roll needs to be replaced, the film core exists on the docking shaft 4022; the film roll mounting assembly 402 in the packaging machine is driven to rotate under the driving arm, and the limiting unit 501 on the mounting rack 4021 carried by the film roll mounting assembly 402 is rotated and stopped after passing through the corresponding one-way limiting mechanism 502, so that the precise positioning of the docking shaft 4022 in the film roll mounting assembly 402 is realized;

[0073] At this time, the docking shaft 4022 and the storage station 103 without the spare film roll are located on the sliding path of the film feeding arm 204 in the film roll transfer mechanism 2;

[0074] S5.2: the film feeding arm 204 in the film roll transfer mechanism 2 carries the grabbing component 205 to move to the upper side of the docking shaft 4022 under the driving of the second driving unit 206, then the grabbing component 205 is driven to grab the film core on the docking shaft 4022 under the starting of the first driving unit 203, and then the grabbing component 205 is reset to the original position under the starting of the first driving unit 203 and the second driving unit 206;

[0075] Because the storage station 103 located on the path of the film feeding arm 204 is not placed with the spare film roll, the film core can be placed on the empty storage station 103;

[0076] S5.3: the driving component 101 in the spare film roll storage mechanism 1 drives the driving panel 102 to carry the storage station 103 with the spare film roll to rotate, and realizes the coincidence with the original empty storage station 103 under the positioning assembly 5, so that the steps in S5.2 are reversely operated, that is, the grabbing component 205 carries the spare film roll to move to the docking shaft 4022 of the mounting rack 4021;

[0077] S5.4: the driving motor 3023 in the traction film clamping assembly 302 drives the rotating shaft 3022 to carry the film head on the spare film roll to pass through the clamping component 3021 and the mounting rack 4021, at this time, the film between the film head and the spare film roll on the docking shaft 4022 is attached to the driving shaft 4023, then the swing cover plate 4025 carries the driven shaft 4024 to be buckled on the film through the air cylinder 4026, so that the automatic replacement of the film roll is completed.

[0078] The above is only the embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made in the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A film roll replacing device characterized by comprising: The utility model relates to a spare film roll storage mechanism (1) for storing spare film rolls, comprising a storage station (103) for placing film rolls, a film roll transfer mechanism (2) for transferring spare film rolls on the storage station (103) to a packaging machine, and a film roll head clamping mechanism (3) comprising a fixed film clamping assembly (301) installed near the storage station (103) of the driving panel (102) for clamping the film head of the spare film roll. The spare film roll storage mechanism (1) comprises a driving device, which comprises a driving panel (102) and a driving component (101), the driving panel (102) being connected end to end, and a plurality of storage stations (103) being installed on the driving panel (102) and moving in a loop under the driving of the driving component (101) while following the driving panel (102). The utility model further comprises a positioning assembly (5), which comprises a plurality of limiting units (501) and one-way limiting mechanisms (502), the limiting units (501) being positioned after rotating through the one-way limiting mechanisms (502), and a plurality of limiting units (501) being arranged on the driving panel (102) one by one corresponding to the storage stations (103). The one-way limiting mechanisms (502) are installed on the outside of the spare film roll storage mechanism (1), and each one-way limiting mechanism (502) comprises a fixed mounting bracket (5021), a swing arm (5022), and a limiting dead stop (5023), the limiting dead stop (5023) being installed on the fixed mounting bracket (5021) and located on one side of the swing arm (5022) to limit the rotation of the swing arm (5022) to that side.

2. The film roll changing device according to claim 1, characterized in that: The driving panel (102) is a ring-shaped panel, and the bottom of the ring-shaped panel is rotationally connected to a rack; 3. The film roll changing device according to claim 2, characterized in that: The storage station (103) is a film placing shaft arranged on the conveying panel of the vertical driving device; The inside of the driving panel (102) is centrally provided with a mounting station (104) for mounting the film roll transfer mechanism (2).

4. The film roll changing device according to claim 3, characterized in that: The film roll transfer mechanism (2) comprises a moving bracket (201), a lifting frame (202) vertically slidably connected to the moving bracket (201), and a first driving unit (203) for driving the lifting frame (202) to move up and down; The top of the lifting frame (202) is transversely slidably installed with a film feeding arm (204), the beginning end of the film feeding arm (204) is provided with a mounting grabbing component (205), and the film feeding arm (204) is driven by a second driving unit (206). ​ 5. The film roll changing device according to claim 4, characterized in that: ​ ​ 6. The film roll changing device according to claim 1, characterized in that: The fixed film clamping assembly (301) comprises two film clamping plates (3011), and film clamping grooves (3012) for film head entry are formed on the two film clamping plates (3011), 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 piece (3013) and a pneumatic spring (3014) for driving the film clamping piece (3013), and the film clamping piece (3013) is rotationally connected between the film clamping plate (3011) and the end away from the opening of the film clamping groove (3012).

7. The film roll changing device according to claim 6, characterized in that: The film clamping station (3015) is vertically provided with a spare film roll; The fixed film clamping assembly (301) further comprises a support frame (3016) mounted on the top of the film clamping piece (3013).

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

9. A packaging machine characterized in that, The film roll changing device comprises a packaging machine frame (4), and the packaging machine frame (4) is provided with a rotatable rotating arm (401) on the top, one end of the rotating arm (401) is vertically and slidingly connected with a film roll mounting assembly (402); The film roll mounting assembly (402) comprises a mounting frame (4021), one side of the mounting frame (4021) is provided with a butt joint shaft (4022) for receiving a spare film roll, and a clamping driving mechanism for clamping and driving a film; The clamping driving mechanism comprises a driving shaft (4023) arranged in parallel with the butt joint shaft (4022), and a driven shaft (4024) for clamping 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, characterised in that: The positioning assembly (5) comprises two one-way limiting mechanisms (502), and the two one-way limiting mechanisms (502) are mounted on the sliding path of the film feeding arm (204), one of the one-way limiting mechanisms (502) is arranged corresponding to the limiting unit (501) on the driving face plate (102), and the other one-way limiting mechanism (502) is arranged corresponding to the limiting unit (501) mounted on the mounting frame (4021).

Images