Film supporting and releasing device capable of storing film rolls

Abstract

The utility model discloses a film supporting and releasing device capable of storing film rolls, and relates to the technical field of film packaging machines. The standby film roll storage frame is arranged on one side of the film supporting and releasing mechanism of the film supporting and releasing device, the upper film roll channel is arranged between the standby film roll storage frame and the film supporting and releasing mechanism, and the standby film roll on the standby film roll storage frame rolls to the film supporting and releasing mechanism through the upper film roll channel. The standby film roll storage function of the film supporting and releasing device can be achieved, meanwhile, due to the fact that the upper film roll channel is arranged between the standby film roll storage frame and the film supporting and releasing mechanism, standby film rolls can be easily transferred to the film supporting and releasing mechanism, and the efficiency of supplementing new film rolls is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film packaging machines, in particular to the technical field of a film supporting device for placing a packaging film roll in a film packaging machine, and more specifically to a film supporting device capable of storing a film roll. Background Art

[0002] The existing film-releasing devices for packaging machines all use a pair of relatively fixed film-supporting rollers to support the film roll, and the film-supporting rollers are connected to a power source. The film-supporting rollers rotate, driving the film roll above them to rotate, thereby realizing the film-supporting and film-releasing functions. For example, the utility model patent with the publication number CN218055843U and the publication date December 16, 2022, named "Film-releasing device for packaging machine", the film-supporting mechanism of the utility model patent is a pair of relatively fixed film-supporting rollers. Another example is the utility model patent with the publication number CN206813429U and the publication date December 29, 2017, named "A film-feeding device for packaging machine", the film-supporting mechanism of the utility model patent is also a pair of relatively fixed film-supporting rollers. Its working principle is to control the linear speed of the film roll unwinding by controlling the rotation speed of the film-supporting rollers through two film-supporting rollers that are tangent to the film roll respectively.

[0003] The above-mentioned film supporting device does not have the function of storing spare film rolls. When the film roll needs to be replenished, the new film roll can only be manually placed on the two film supporting rollers of the film supporting device, and the packaging film of the new film roll is pulled out for film splicing. The efficiency of replenishing the new film roll is slow. Utility Model Content

[0004] In order to overcome the defects and shortcomings existing in the above-mentioned prior art, the utility model provides a film supporting device that can store film rolls. The purpose of the invention of the utility model is to solve the problem that the film supporting device in the prior art cannot store spare film rolls, resulting in slow efficiency in replenishing new film rolls. The utility model arranges a spare film roll reserve rack on one side of the film supporting mechanism of the film supporting device, and an upper film roll channel is arranged between the spare film roll reserve rack and the film supporting mechanism. The spare film roll on the spare film roll reserve rack rolls onto the film supporting mechanism through the upper film roll channel. The utility model can realize the spare film roll reserve function of the film supporting device. At the same time, through the arrangement of the upper film roll channel between the spare film roll reserve rack and the film supporting mechanism, the spare film roll can be easily transferred to the film supporting mechanism, thereby improving the efficiency of replenishing new film rolls.

[0005] In order to solve the above problems existing in the prior art, the utility model is implemented through the following technical solutions.

[0006] The utility model provides a film supporting and placing device capable of storing film rolls, comprising a film supporting frame and a film supporting and placing mechanism assembled on the film supporting frame, a spare film roll storage frame is arranged at one end of the film supporting frame, the spare film roll storage frame is located at one side of the film supporting and placing mechanism, an upper film roll channel is arranged between the spare film roll storage frame and the film supporting and placing mechanism, and the spare film roll on the spare film roll storage frame rolls onto the film supporting and placing mechanism through the upper film roll channel.

[0007] Further preferably, the spare film roll storage rack comprises a spare film roll storage portion and an upper film plate extending from the spare film roll storage portion toward the film supporting mechanism, and the upper film roll channel is formed above the upper film plate.

[0008] More preferably, the end of the upper film plate away from the film supporting mechanism is bent obliquely upward to form the spare film roll storage portion.

[0009] More preferably, the spare film roll storage rack is assembled on the film supporting rack via a connecting shaft, and the spare film roll storage rack is driven by the upper film driving mechanism to swing the connecting shaft with the film supporting rack.

[0010] Further preferably, in the initial state, the roll film reserve portion on the spare film roll reserve rack is lower than or parallel to the plane where the film supporting mechanism is located. After the upper film driving mechanism drives the spare film roll reserve rack to swing upward, the roll film reserve portion is higher than the plane where the film supporting mechanism is located, and the upper film plate is tilted to form an inclined upper film roll channel, and the spare film roll of the roll film reserve portion rolls along the inclined upper film roll channel to the film supporting mechanism.

[0011] More preferably, one side of the spare film roll reserve rack is provided with an upper film driving mechanism for pushing the spare film roll on the spare film roll reserve rack to the film supporting mechanism.

[0012] Further preferably, the spare film roll reserve portion of the spare film roll reserve rack is arranged higher than the plane where the film supporting mechanism is located, the upper film roll channel is inclined, and a blocking component is provided at the front end of the upper film roll channel, and the blocking component is configured to block the spare film roll on the spare film roll reserve rack. After the blocking component is released, the spare film roll rolls through the inclined upper film roll channel to the film supporting mechanism.

[0013] Further preferably, the film supporting mechanism includes a film supporting roller I, a film supporting roller II and a separation driving mechanism for changing the distance between the film supporting roller I and the film supporting roller II.

[0014] Further preferably, film supporting roller I is fixedly mounted relative to the film supporting frame, and film supporting roller I rotates relative to the film supporting frame; film supporting roller II is slidably mounted on the film supporting frame through sliding seats at both ends thereof, and film supporting roller II rotates relative to the sliding seats; the sliding seats are connected to the separation driving mechanism, and the sliding seats are driven by the separation driving mechanism to slide on the film supporting frame, and the sliding seats drive film supporting roller II to approach or move away from film supporting roller I to change the distance between film supporting roller I and film supporting roller II.

[0015] Further preferably, film roll guide plates are provided on both sides of the upper film roll channel.

[0016] Compared with the prior art, the beneficial technical effects brought by the utility model are as follows:

[0017] 1. Compared with the prior art, the utility model, on the one hand, provides a spare film roll storage rack so that the film supporting device has the function of storing film rolls, and on the other hand, provides an upper film roll channel between the spare film roll storage rack and the film supporting mechanism, so that the spare film roll on the spare film roll storage rack can be rolled onto the film supporting mechanism through the upper film roll channel, without the need for manual replenishment of new film rolls, thereby improving the efficiency and convenience of replenishing new film rolls and reducing the workload of workers.

[0018] 2. The spare film roll storage rack in the utility model adopts the structure of an upper film plate. One end of the upper film plate is bent to form a spare film roll storage part to ensure the stable storage of the spare film roll at this position. The other end extends toward the film supporting mechanism to facilitate the transport of the spare film roll to the film supporting mechanism for film placing operation after the film splicing is completed, thereby realizing automatic replacement of the film roll.

[0019] 3. In order to realize automatic replacement of film rolls in the utility model, a variety of structural methods can be adopted. After the film roll on the film supporting and placing mechanism has been laid down and the film connection between the spare film roll and the film roll on the film supporting and placing mechanism has been completed, a certain power is provided by the film-laying driving mechanism so that the spare film roll can be moved to the film supporting and placing mechanism to continue laying the film, thus realizing automatic film laying of the spare film roll without manual operation, improving efficiency and making film roll replacement faster and more convenient.

[0020] 4. Compared with the prior art, the film supporting mechanism of the utility model is set as a pair of film supporting rollers with adjustable spacing, and the spacing between film supporting rollers I and II is changed by a separation drive mechanism. After the film roll on the film supporting roller is finished, the film roll core is automatically released without the need to manually remove the roll core. The film roll can be automatically replaced in cooperation with the spare film roll storage rack.

[0021] 5. The film support mechanism of the utility model is set as a pair of film support rollers with variable spacing. When the diameter of the film roll is large, a pair of film support rollers can be set with a larger spacing to stably support the film roll. As the film roll continues to be unwound, the diameter of the film roll will gradually decrease. At this time, the spacing between the film support rollers can be reduced to continuously provide stable support for the film roll and avoid jumping during the unwounding process.

[0022] 6. The distance between the film supporting roller I and the film supporting roller II of the film supporting mechanism of the utility model is adjustable. When the spare film roll rolls onto the film supporting mechanism, a larger distance can be set between the film supporting roller I and the film supporting roller II to provide stable support for the spare film roll and prevent the spare film roll from rolling to one side of the film supporting mechanism; then, in the process of gradually releasing the film, the distance between the two film supporting rollers is gradually reduced to continuously provide stable support. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the film holding and placing device capable of storing film rolls of the utility model;

[0024] Figure 2 This is a diagram showing the use status of the film holding and placing device capable of storing film rolls according to the utility model;

[0025] Figure 3 It is a side view of the film holding device capable of storing film rolls of the utility model;

[0026] Figure numerals: 1. film supporting rack, 2. film supporting and placing mechanism, 3. spare film roll storage rack, 4. upper film roll channel, 5. spare film roll, 6. film roll currently in use, 7. spare film roll storage section, 8. upper film plate, 9. connecting shaft, 10. upper film driving mechanism, 11. film supporting roller I, 12. film supporting roller II, 13. separation driving mechanism, 14. sliding seat, 15. film roll guide plate. DETAILED DESCRIPTION

[0027] The following are exemplary embodiments of the present invention that are combined with the accompanying drawings to help fully understand the claims and their equivalents, wherein the specific details are only considered as exemplary and do not limit the scope of the present invention. Therefore, those of ordinary skill in the art can make various changes and modifications to the embodiments without departing from the scope and spirit of the present invention.

[0028] Example 1

[0029] As a preferred embodiment of the present invention, refer to the attached specification Figure 1 As shown, the present embodiment discloses a film supporting device capable of storing film rolls, comprising a film supporting frame 1 and a film supporting mechanism 2 mounted on the film supporting frame 1, a spare film roll storage frame 3 is arranged at one end of the film supporting frame 1, the spare film roll storage frame 3 is located on one side of the film supporting mechanism 2, an upper film roll channel 4 is arranged between the spare film roll storage frame 3 and the film supporting mechanism 2, and the spare film roll on the spare film roll storage frame 3 rolls onto the film supporting mechanism 2 through the upper film roll channel 4.

[0030] In this embodiment, the film supporting mechanism 2 can adopt an existing film supporting mechanism 2, such as a pair of film supporting roller structures cited in the prior art patent document in the background technology, or adopt other film supporting mechanisms 2 that can simultaneously support the film roll and release the film roll.

[0031] In this embodiment, the existing film supporting device that does not have the function of storing film rolls can be upgraded and modified. A spare film roll storage rack 3 is set on one side of the film supporting mechanism 2, and then an upper film roll channel 4 is set between the spare film roll storage rack 3 and the film supporting mechanism 2, so that the spare film roll can be rolled onto the film supporting mechanism 2 through the upper film roll channel 4, thereby easily realizing the film loading of the spare film roll.

[0032] As an example of this embodiment, refer to the attached Figure 1 and attached Figure 2 As shown, the standby film roll storage rack 3 includes a standby film roll storage portion 7 and an upper film plate 8 extending from the standby film roll storage portion 7 toward the film supporting mechanism 2, and the upper film roll channel 4 is formed above the upper film plate 8. The end of the upper film plate 8 away from the film supporting mechanism 2 is bent obliquely upward to form the standby film roll storage portion 7.

[0033] As an example of this embodiment, in order to further ensure that the spare film roll rolls accurately and does not deviate when rolling toward the film supporting mechanism 2 , film roll guide plates 15 are provided on both sides of the upper film roll channel 4 .

[0034] The spare film roll storage rack 3 is not limited to the attached Figure 1 and attached Figure 2 The structure shown in , other structures that can realize the function of the spare film roll storage rack 3 of the present application are all acceptable, and the present application does not limit this.

[0035] Example 2

[0036] As another preferred embodiment of the present invention, this embodiment is based on the above-mentioned embodiment 1, and further supplements and elaborates on the technical solution of the present invention. In this embodiment, after the currently used film roll 6 on the film supporting mechanism 2 has finished releasing the film, the spare film roll 5 and the packaging film released by the currently used film roll 6 are spliced ​​(manual splicing or automatic splicing, preferably automatic splicing), and the spare film roll 5 needs to be moved to the film supporting mechanism 2. In order to realize that the spare film roll 5 on the spare film roll storage rack 3 can automatically roll to the film supporting mechanism 2, this embodiment proposes the following implementation methods.

[0037] As an implementation method of this embodiment, refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 3As shown, the standby film roll reserve rack 3 is assembled on the film supporting rack 1 through the connecting shaft 9, and the standby film roll reserve rack 3 is driven by the upper film driving mechanism 10 to swing the connecting shaft 9 with the film supporting rack 1. In the initial state, the film roll reserve portion on the standby film roll reserve rack 3 is lower than or parallel to the plane where the film supporting mechanism 2 is located. After the upper film driving mechanism 10 drives the standby film roll reserve rack 3 to swing upward, the film roll reserve portion is higher than the plane where the film supporting mechanism 2 is located, and the upper film plate 8 is tilted to form an inclined upper film roll channel 4, and the standby film roll of the film roll reserve portion rolls along the inclined upper film roll channel 4 to the film supporting mechanism 2.

[0038] As another implementation of this embodiment (not shown in the figure), one side of the spare film roll storage rack 3 is provided with an upper film driving mechanism 10 for pushing the spare film roll on the spare film roll storage rack 3 to the film supporting mechanism 2.

[0039] As another implementation of this embodiment (not shown in the figure), the spare film roll reserve portion 7 of the spare film roll reserve rack 3 is arranged higher than the plane where the film supporting mechanism 2 is located, the upper film roll channel 4 is arranged at an angle, and a blocking component is arranged at the front end of the upper film roll channel 4, and the blocking component is configured to block the spare film roll on the spare film roll reserve rack 3. After the blocking component is released, the spare film roll rolls onto the film supporting mechanism 2 through the inclined upper film roll channel 4.

[0040] As another implementation of the present embodiment, the installation position of the spare film roll storage rack 3 is set. After the film splicing of the spare film roll is completed, the film of the spare film roll is pulled (pulled by an independent film pulling mechanism, or the film roll is pulled during the subsequent packaging process of the packaging machine), which will drive the spare film roll to roll, thereby causing the spare film roll to roll onto the film supporting mechanism 2, and there is no need to set up an upper film driving mechanism 10.

[0041] In the above embodiment, the upper film driving mechanism 10 may be a cylinder or other driving member that can realize this function.

[0042] The above-mentioned embodiments only show some embodiments that can realize automatic fixing of the spare film roll from the spare film roll storage rack 3 to the film supporting mechanism 2.

[0043] Example 3

[0044] As another preferred embodiment of the present invention, this embodiment is based on the above-mentioned embodiment 1 or embodiment 2, and further supplements and explains the technical solution of the present invention in detail. Figure 1 and attached Figure 2 As shown, the film supporting mechanism 2 includes a film supporting roller Ⅰ11, a film supporting roller Ⅱ12 and a separation driving mechanism 13 for changing the distance between the film supporting roller Ⅰ11 and the film supporting roller Ⅱ12.

[0045] The film-supporting mechanism 2 shown in this embodiment is different from the existing film-supporting mechanism 2. The film-supporting mechanism 2 shown in this embodiment sets the existing relatively fixed pair of film-supporting rollers to a pair of film-supporting rollers with adjustable spacing, and changes the spacing between the film-supporting rollers Ⅰ11 and the film-supporting rollers Ⅱ12 by separating the driving mechanism 13. After the film roll on the film-supporting roller is finished, the core of the film roll can be automatically released without the need to manually remove the core. The film roll can be automatically replaced in cooperation with the spare film roll storage rack 3. At the same time, when the diameter of the film roll is large, a pair of film-supporting rollers can be set with a larger spacing between them to stably support the film roll. As the film roll continues to be unwound, the diameter of the film roll will gradually decrease. At this time, the spacing between the film-supporting rollers can be reduced to continuously provide stable support for the film roll and avoid jumping during the film unwinding process. When the spare film roll rolls onto the film supporting mechanism 2, a larger distance can be set between the film supporting roller Ⅰ11 and the film supporting roller Ⅱ12 to provide stable support for the spare film roll and prevent the spare film roll from rolling to the side of the film supporting mechanism 2; then, in the process of gradually releasing the film, the distance between the two film supporting rollers is gradually reduced to continuously provide stable support.

[0046] As an example of this embodiment, the film supporting roller Ⅰ11 is connected to a driving motor to rotate, and the film supporting roller Ⅱ12 is connected to a driving motor to rotate, so as to realize the function of actively releasing the film.

[0047] As another example of this embodiment, refer to the attached Figure 2 As shown, the film support roller Ⅰ11 and the film support roller Ⅱ12 can be connected to the same power source through a transmission component, and the transmission component can be a synchronous belt transmission component, a chain transmission component or a belt transmission component. Figure 2 As shown, under the condition that the film roller Ⅱ12 moves and the film roller Ⅰ11 is fixed, a synchronous pulley Ⅱ is arranged at the end of the film roller Ⅱ12, and a synchronous pulley Ⅲ is arranged at the end of the sliding seat 14 of the film roller Ⅱ12, and the positions of the synchronous pulley Ⅱ and the synchronous pulley Ⅲ are relatively fixed; when the film roller Ⅱ12 moves, the synchronous pulley Ⅱ and the synchronous pulley Ⅲ move synchronously with the film roller Ⅱ12; the end of the film roller Ⅰ11 is provided with a synchronous pulley Ⅰ, and the output shaft of the power source is provided with a synchronous pulley Ⅳ, a synchronous pulley Ⅲ, a synchronous pulley Ⅱ and a synchronous pulley Ⅰ. Under the condition that the film roller Ⅱ12 moves and the film roller Ⅰ11 is fixed, a synchronous pulley Ⅴ can be added on one side of the film roller Ⅰ11 to increase the tension of the synchronous belt and increase it based on its reversing requirements. Similarly, the above-mentioned synchronous belt and synchronous pulley can be replaced by a chain and a sprocket, or a belt and a pulley.

[0048] In this embodiment, the separation driving mechanism 13 changes the distance between the film supporting roller I 11 and the film supporting roller II 12 by driving one of the film supporting rollers to move relative to the other film supporting roller; or by driving the two film supporting rollers to move relative to each other at the same time.

[0049] As an implementation method of this embodiment, refer to the attached Figure 1 and attached Figure 2 As shown, the film supporting roller Ⅰ11 is fixedly assembled relative to the film supporting frame 1, and the film supporting roller Ⅰ11 rotates relative to the film supporting frame 1; the film supporting roller Ⅱ12 is slidably assembled on the film supporting frame 1 through the sliding seats 14 at both ends thereof, and the film supporting roller Ⅱ12 rotates relative to the sliding seat 14; the sliding seat 14 is connected to the separation driving mechanism 13, and the separation driving mechanism 13 drives the sliding seat 14 to slide on the film supporting frame 1, and the sliding seat 14 drives the film roller Ⅱ to approach or move away from the film supporting roller Ⅰ11 to change the distance between the film supporting roller Ⅰ11 and the film supporting roller Ⅱ12.

[0050] As an example, the separation drive mechanism 13 is a cylinder. Among them, the specific structural selection of the separation drive mechanism 13 can be selected according to actual needs, and is not limited to the cylinder. Other drive structures can also be selected, such as a motor + screw nut transmission substructure, a motor + gear rack transmission substructure, or a motor + synchronous belt transmission substructure, etc. The use of a cylinder can achieve rapid action, rapid reciprocating operation between two points, and can quickly release the core and reset it. The use of a motor drive structure can achieve adjustment of any point to achieve adjustment of any distance between the two film support rollers (within the adjustment range), which can adapt to changes in the diameter of the film roll during the film rolling and unwinding process, mainly to stabilize the film roll and supplemented by releasing the core.

[0051] As an example, as shown in the attached manual Figure 1 As shown, two cylinders are provided as the separation driving mechanism 13, and the two cylinders are respectively connected to the sliding seats 14 at both ends of the film supporting roller II 12.

[0052] The above embodiment only provides one implementation structure of the film supporting mechanism 2, and does not exclude other implementation structures for adjusting the distance between the two film supporting rollers, such as film supporting roller Ⅰ11 and film supporting roller Ⅱ12 both slide relative to the film supporting frame 1, that is, film supporting roller Ⅰ11 and film supporting roller Ⅱ12 are both slidably assembled on the film supporting frame 1 through the sliding seats 14 at both ends; film supporting roller Ⅰ11 and film supporting roller Ⅱ12 are both connected to the separation drive mechanism 13, and the separation drive mechanism 13 drives film supporting roller Ⅰ11 and film supporting roller Ⅱ12 to move closer or farther away from each other to change the distance between film supporting roller Ⅰ11 and film supporting roller Ⅱ12. The separation drive mechanism 13 includes a drive motor assembly and a transmission assembly, and the drive motor assembly is connected to the transmission assembly, and the drive motor assembly is driven by the transmission assembly to change the distance between film supporting roller Ⅰ11 and film supporting roller Ⅱ12. The drive motor assembly is a servo motor + reducer.

[0053] As an example, the transmission assembly is a screw-nut transmission pair, a synchronous belt transmission pair or a gear rack transmission pair. The screw in the screw-nut transmission pair is a reverse threaded screw with two nuts; in the synchronous belt transmission pair, the sliding seat 14 of the film support roller Ⅰ11 is fixed on the synchronous belt on one side, and the sliding seat 14 of the film support roller Ⅱ12 is fixed on the synchronous belt on the other side. Two groups of gear rack transmission pairs are set, one group is connected to the sliding seat 14 of the film support roller Ⅰ11, and the other group is connected to the sliding seat 14 of the film support roller Ⅱ12. Other transmission pair structures that can realize the functions of this solution can also be selected.

[0054] While the inventive concept has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made thereto without departing from the spirit and scope of the invention as defined in the claims.

Claims

1. A film supporting device capable of storing a film roll, comprising a film supporting frame (1) and a film supporting mechanism (2) mounted on the film supporting frame (1), characterized in that: A spare film roll storage rack (3) is provided at one end of the film supporting rack (1), the spare film roll storage rack (3) being located on one side of the film supporting mechanism (2), an upper film roll channel (4) being provided between the spare film roll storage rack (3) and the film supporting mechanism (2), and the spare film roll on the spare film roll storage rack (3) is rolled onto the film supporting mechanism (2) through the upper film roll channel (4).

2. A film holding and placing device capable of storing film rolls as claimed in claim 1, characterized in that: The spare film roll storage rack (3) comprises a spare film roll storage portion (7) and an upper film plate (8) extending from the spare film roll storage portion (7) in the direction of the film supporting mechanism (2), and the upper film roll channel (4) is formed above the upper film plate (8).

3. A film holding and placing device capable of storing film rolls as claimed in claim 2, characterized in that: The end of the upper film plate (8) away from the film supporting mechanism (2) is bent obliquely upward to form the spare film roll storage portion (7).

4. A film holding and placing device capable of storing film rolls according to any one of claims 1 to 3, characterized in that: The spare film roll storage rack (3) is assembled on the film support rack (1) via a connecting shaft (9), and the spare film roll storage rack (3) is driven by the upper film driving mechanism (10) to swing the connecting shaft (9) between the spare film roll storage rack and the film support rack (1).

5. A film holding and placing device capable of storing film rolls as claimed in claim 4, characterized in that: In the initial state, the film roll reserve portion on the spare film roll reserve rack (3) is lower than or parallel to the plane where the film supporting mechanism (2) is located. After the upper film driving mechanism (10) drives the spare film roll reserve rack (3) to swing upward, the film roll reserve portion is higher than the plane where the film supporting mechanism (2) is located, and the upper film plate (8) is tilted to form an inclined upper film roll channel (4). The spare film roll of the film roll reserve portion rolls along the inclined upper film roll channel (4) onto the film supporting mechanism (2).

6. A film holding and placing device capable of storing film rolls according to any one of claims 1 to 3, characterized in that: An upper film driving mechanism (10) for pushing the spare film roll on the spare film roll storage rack (3) to the film supporting mechanism (2) is provided on one side of the spare film roll storage rack (3).

7. A film holding and placing device capable of storing film rolls according to any one of claims 1 to 3, characterized in that: The spare film roll storage portion (7) of the spare film roll storage rack (3) is arranged higher than the plane where the film supporting mechanism (2) is located, the upper film roll channel (4) is arranged at an angle, and a blocking component is arranged at the front end of the upper film roll channel (4), and the blocking component is configured to block the spare film roll on the spare film roll storage rack (3). After the blocking component is released, the spare film roll roll rolls onto the film supporting mechanism (2) through the upper film roll channel (4) arranged at an angle.

8. A film holding and placing device capable of storing film rolls according to any one of claims 1 to 3, characterized in that: The film supporting mechanism (2) comprises a film supporting roller I (11), a film supporting roller II (12), and a separation drive mechanism (13) for changing the distance between the film supporting roller I (11) and the film supporting roller II (12).

9. A film holding and placing device capable of storing film rolls as claimed in claim 8, characterized in that: The film supporting roller I (11) is fixedly mounted relative to the film supporting frame (1), and the film supporting roller I (11) rotates relative to the film supporting frame (1); the film supporting roller II (12) is slidably mounted on the film supporting frame (1) via sliding seats (14) at both ends thereof, and the film supporting roller II (12) rotates relative to the sliding seats (14); the sliding seats (14) are connected to the separation driving mechanism (13), and the separation driving mechanism (13) drives the sliding seats (14) to slide on the film supporting frame (1), and the sliding seats (14) drive the film supporting roller II to approach or move away from the film supporting roller I (11), so as to change the distance between the film supporting roller I (11) and the film supporting roller II (12).

10. A film holding and placing device capable of storing film rolls according to any one of claims 1 to 3, characterized in that: Film roll guide plates (15) are provided on both sides of the upper film roll channel (4).

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