Material collecting equipment for food-grade film and using method of material collecting equipment

Abstract

The invention relates to the technical field of film processing, in particular to food-grade film collecting equipment and a method thereof.The food-grade film collecting equipment comprises horizontal plates arranged at the two ends of the front side of a splitting machine, a first motor is arranged on the left sides of the horizontal plates, and the output end of the first motor is in transmission connection with a first screw; one side of the first screw penetrates into the horizontal plate and is rotationally connected with the inner wall of the horizontal plate. The splitting machine can accurately cut a film material into a required width, the unloading mechanism is responsible for conveying the cut film material to a winding position, and the loading mechanism tightly and uniformly winds the film material on a winding drum through an accurate winding and expanding mechanism, especially a moving assembly and an expanding part mentioned in the claim. According to the film winding machine, the equipment can automatically adapt to winding drums with different diameters, the flatness and compactness of a film material in the winding process are ensured, and the flexible winding mechanism not only improves the winding efficiency, but also reduces the waste of the film material caused by non-uniform winding.

Description

Technical Field

[0001] The present invention relates to the technical field of film processing, and in particular to a food-grade film collecting device and a use method thereof. Background Art

[0002] Plastic film is a hard and soft plastic sheet, usually used for packaging, covering and protecting items; it can be made of different types of plastics, such as polyethylene, polypropylene, etc., with the characteristics of waterproof, tear-resistant and fresh-keeping. Plastic film is widely used in food packaging, agricultural covering, building protection and other fields; in the production process of plastic film, it needs to be slit, and then rolled up after slitting.

[0003] A Chinese patent discloses a winding and conveying device for slitting plastic film, the publication number of which is CN118458477B. The slitting machine can slit plastic film, and the slitting machine includes a No. 1 shaft and a slitting knife; the winding and conveying device for slitting plastic film also includes: an automatic loading and unloading unit, and the slitting machine is provided with an automatic loading and unloading unit. The automatic loading and unloading unit can unload the rolled film roll and automatically install a new empty roll; the winding and conveying device for slitting plastic film is provided with an automatic loading and unloading unit on the slitting machine. There is an automatic loading and unloading unit, which can unload the wound film roll and automatically install a new empty roll; it replaces manual unloading and loading of rolls, saves time and effort, is convenient to operate, and improves its automation level, which solves the problem of needing to use a slitting machine when slitting the plastic film. After the slitting machine slits the plastic film, it will unload the slit and wound film roll as needed, and replace it with an empty roll to slit and rewind it; the above process usually requires manual operation, which is time-consuming and labor-intensive, and the automation level is not high.

[0004] The conveyor belt provided in the winding and conveying device for slitting plastic film in the comparative document is not directly shown in the drawings of this device, and the conveyor belt used in the comparative document is the same as that used in the comparative document.

[0005] According to the technical effects of the above-mentioned existing technologies and technical solutions, there are still areas that need to be optimized: when installing the reel, it is not possible to clamp and install it according to the diameters of different reels, and the adaptability range is small. Moreover, when disassembling the reel, since there is no function for clamping the reel, even if a conveyor belt is provided, it is easy for the reel to not fall off the surface of the winding roller. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the above problems existing in the existing food-grade film receiving equipment, the present invention is proposed.

[0008] Therefore, the object of the present invention is to provide a material receiving equipment for food-grade film, the purpose of which is that: the equipment can efficiently complete the cutting, conveying, winding and loading and unloading processes of food-grade film through the coordinated work of a slitting machine, an unloading mechanism and a loading mechanism, which helps to improve production efficiency and meet the needs of large-scale production.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0010] A slitting machine, the slitting machine comprising a rotating shaft and a slitting blade, the rotating shaft and the slitting blade are both arranged on the top of the slitting machine;

[0011] The unloading mechanism comprises horizontal plates arranged at both ends of the front side of the slitting machine, a No. 1 motor is arranged on the left side of the horizontal plate, an output end of the No. 1 motor is transmission-connected to a No. 1 screw, one side of the No. 1 screw penetrates into the interior of the horizontal plate and is rotationally connected to the inner wall of the horizontal plate; and,

[0012] A vertical plate is arranged at the front side of the horizontal plate, a No. 2 motor is arranged at the top of the vertical plate, a No. 2 screw is connected to the output end of the No. 2 motor, the bottom of the No. 2 screw passes through the interior of the vertical plate and is rotatably connected to the inner wall of the vertical plate, and a moving component is connected to the surface of the No. 2 screw; and,

[0013] The mounting mechanism comprises a fixing plate arranged on one side of the slitting machine, and a mounting assembly is arranged on the front side of the fixing plate.

[0014] As a preferred solution of the food-grade film collecting equipment described in the present invention, the moving component includes a moving plate arranged on the front side of the vertical plate, a moving block is arranged on the rear side of the moving plate, the upper and lower sides of the moving block are transmission connected to the surface of the No. 2 screw rod through threaded holes, a No. 3 motor is arranged on the front side of the moving block, the output end of the No. 3 motor is transmission connected to a rotating rod, the surface of the rotating rod is sleeved with a reel, and the surface of the reel is provided with an expansion component.

[0015] As a preferred solution of the food-grade film collecting equipment described in the present invention, the expansion component includes a thread groove opened on the surface of the rotating rod, the thread groove has a bidirectional thread direction, a positioning block is provided on the surface of the rotating rod, a transmission block is provided on one side of the positioning block, the transmission block is transmission-connected to the thread groove, the upper and lower sides of the positioning block and the transmission block are rotatably connected to the expansion rod, one side of the expansion rod is rotatably connected to the expansion plate, and one side of the expansion plate is in contact with the inner wall of the reel.

[0016] As a preferred solution of the food-grade film collecting equipment of the present invention, the mounting assembly includes a mounting groove opened on one side of the fixing plate, a mounting rod is arranged on the surface of the mounting groove, and a support plate is arranged on one side of the mounting rod.

[0017] As a preferred solution of the food-grade film collecting equipment of the present invention, a fixing block is arranged on the rear side of the vertical plate, and both left and right sides of the fixing block are transmission-connected to the surface of the No. 2 screw through threaded holes.

[0018] As a preferred solution of the food-grade film receiving equipment described in the present invention, two receiving plates are arranged on the front side of the fixed plate, the two receiving plates are divided into a main receiving plate and an auxiliary receiving plate, and the rear side of the main receiving plate is fixedly connected to the front side of the fixed plate.

[0019] As a preferred solution of the food-grade film collecting equipment described in the present invention, travel grooves are provided at both ends of the front side of the fixed block, vertical rods are fixedly connected to the surface of the travel grooves, travel blocks and springs are sleeved on the surfaces of the vertical rods, the upper and lower sides of the springs are respectively fixedly connected to the top of the travel block and the inner wall of the travel groove, and the front side of the travel block is fixedly connected to the rear side of the auxiliary receiving plate.

[0020] As a preferred solution of the food-grade film receiving equipment described in the present invention, a positioning plate is fixedly connected to the front side of the fixed plate, an electric push rod is arranged at the bottom of the positioning plate, and the output end of the electric push rod is transmission-connected to the top of the auxiliary receiving plate.

[0021] The beneficial effects of the present invention are as follows: the equipment realizes efficient and automatic material collection of food-grade films through the coordinated work of the slitting machine, the unloading mechanism and the loading mechanism. The slitting machine can accurately cut the film material into the required width, the unloading mechanism is responsible for transmitting the cut film material to the winding position, and the loading mechanism uses a precise winding and expansion mechanism to tightly and evenly wind the film material on the reel. In particular, the moving components and expansion components mentioned in the claims enable the equipment to automatically adapt to reels of different diameters and ensure the flatness and tightness of the film material during the winding process. This flexible winding mechanism not only improves the winding efficiency, but also reduces the waste of film materials caused by uneven winding.

[0022] In view of the problems existing in the above-mentioned existing food-grade film collecting method, the present invention is proposed.

[0023] Therefore, the object of the present invention is to provide a method for collecting food-grade films, the purpose of which is that the equipment can efficiently complete the cutting, conveying, winding and loading and unloading processes of food-grade films through the coordinated work of a slitting machine, an unloading mechanism and a loading mechanism, which helps to improve production efficiency and meet the needs of large-scale production.

[0024] In order to solve the above technical problem, the present invention provides the following technical solution: the vertical plate moves to the right for the first time to complete the installation of the roll, and when the vertical plate moves to the right for the second time, the roll can be taken out.

[0025] As a preferred embodiment of the food-grade film receiving method of the present invention, the new roll can be clamped by the initial movement of the vertical plate to the right and then reeled up. When the vertical plate moves to the right for the second time, the roll can be taken out by the cooperation of the main receiving plate and the auxiliary receiving plate.

[0026] The beneficial effects of the present invention are as follows: by arranging an unloading mechanism and a loading mechanism on the slitting machine, the unloading mechanism and the loading mechanism can unload the rolled-up film roll and automatically install a new empty roll, replacing manual unloading and loading of rolls, saving trouble and labor, facilitating operation and improving the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0028] Figure 1 This is a schematic structural diagram of the slitting machine provided by the present invention.

[0029] Figure 2 The present invention provides Figure 1 A local enlarged schematic diagram of point A in the middle.

[0030] Figure 3 This is a schematic diagram of the unloading mechanism provided by the present invention.

[0031] Figure 4 A schematic diagram of the expansion component provided by the present invention.

[0032] Figure 5 This is a schematic diagram of the installation assembly provided by the present invention.

[0033] Figure 6 Schematic diagram of the main material receiving plate and the auxiliary material receiving plate provided by the present invention.

[0034] Figure 7 The present invention provides Figure 6 A local enlarged schematic diagram of point B in the middle.

[0035] 100, slitting machine; 1, rotating shaft; 2, slitting blade; 200, unloading mechanism; 201, horizontal plate; 202, No. 1 motor; 203, No. 1 screw; 204, vertical plate; 205, No. 2 motor; 206, No. 2 screw; 207, moving assembly; 207a, moving plate; 207b, moving block; 207c, No. 3 motor; 207d, rotating rod; 207e, reel; 208, expansion component; 208a, thread groove; 208b, positioning block; 208c, transmission block; 208d, expansion rod; 208e, expansion plate; 300, mounting mechanism; 301, fixing plate; 302, mounting assembly; 302a, mounting slot; 302b, mounting rod; 302c, support plate; 401, fixing block; 402, receiving plate; 402a, main receiving plate; 402b, auxiliary receiving plate; 403, travel slot; 404, vertical rod; 405, travel block; 406, spring; 407, positioning plate; 408, electric push rod; DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0040] Example 1

[0041] Reference Figures 1 to 7 , which is the first embodiment of the present invention, provides a food-grade film receiving method to achieve automatic installation and disassembly of the roll 207e.

[0042] The vertical plate 204 moves to the right for the first time to complete the installation of the reel 207e, and when the vertical plate 204 moves to the right for the second time, the reel 207e can be taken out;

[0043] The new roll 207e can be clamped by the initial rightward movement of the vertical plate 204, and then rolled up. When the vertical plate 204 moves to the right for the second time, the roll 207e can be taken out by the cooperation of the main receiving plate 402a and the auxiliary receiving plate 402b.

[0044] The equipment can efficiently complete the cutting, conveying, winding and loading and unloading processes of the food-grade film through the coordinated work of the slitting machine 100, the unloading mechanism 200 and the loading mechanism 300, which helps to improve production efficiency and meet the needs of large-scale production.

[0045] Example 2

[0046] Reference Figures 1 to 3 , 6, and 7 are the second embodiment of the present invention, which provides a disassembly mechanism 200 to realize the automatic disassembly of the reel 207e.

[0047] The unloading mechanism 200 includes a horizontal plate 201 arranged at both ends of the front side of the slitting machine 100, a No. 1 motor 202 is arranged on the left side of the horizontal plate 201, and the output end of the No. 1 motor 202 is transmission-connected to a No. 1 screw 203, one side of the No. 1 screw 203 penetrates into the interior of the horizontal plate 201 and is rotatably connected to the inner wall of the horizontal plate 201; and, a vertical plate 204 is arranged on the front side of the horizontal plate 201, a No. 2 motor 205 is arranged on the top of the vertical plate 204, and the output end of the No. 2 motor 205 is transmission-connected to a No. 2 screw 206, and the bottom of the No. 2 screw 206 penetrates into the interior of the vertical plate 204 and is rotatably connected to the vertical plate The inner wall of No. 204 is rotatably connected, and the surface of the No. 2 screw 206 is transmission-connected with a moving component 207; the moving component 207 includes a moving plate 207a arranged on the front side of the vertical plate 204, and a moving block 207b is arranged on the rear side of the moving plate 207a, and the upper and lower sides of the moving block 207b are transmission-connected with the surface of the No. 2 screw 206 through threaded holes, and a No. 3 motor 207c is arranged on the front side of the moving block 207b, and the output end of the No. 3 motor 207c is transmission-connected with a rotating rod 207d, and the surface of the rotating rod 207d is sleeved with a reel 207e, and the surface of the reel 207e is provided with an expansion component 208.

[0048] Specifically, the unloading mechanism 200 realizes the fast and convenient unloading of the film material and the roll through the coordinated work of the No. 1 motor 202 and the No. 2 motor 205, which greatly simplifies the operation process and reduces the difficulty of operation, thereby significantly improving the unloading efficiency and improving the production efficiency.

[0049] Furthermore, the unloading mechanism 200 is responsible for conveying the cut film material to the material receiving position, and then drives the film material to be conveyed to the material receiving position, and drives the No. 2 screw 206 to rotate through the No. 2 motor 205, and drives the moving block 207b to move again through the No. 2 screw 206, thereby driving the moving plate 207a to move downward. When the moving plate 207a moves to the bottom, the No. 1 motor 202 drives the No. 1 screw 203 by driving the No. 1 screw 203 to drive the fixed block 401 to move the horizontal plate 201. At this time, the main receiving plate 402a and the auxiliary receiving plate 402b work together. The auxiliary receiving plate 402b moves downward under the action of the electric push rod 408, and clamps the reel 207e together with the main receiving plate 402a. After the expansion component 208 is reset, the inner wall of the reel 207e is released from the squeezing of the expansion plate 208e, so that the reel 207e can be removed from the rotating rod 207d.

[0050] Example 3

[0051] Reference Figures 1 to 5 , which is the third embodiment of the present invention, provides a mounting mechanism 300 to achieve automatic mounting of the reel 207e.

[0052] The mounting mechanism 300 comprises a fixed plate 301 arranged on one side of the slitting machine 100, and a mounting assembly 302 is arranged on the front side of the fixed plate 301; the mounting assembly 302 comprises a mounting groove 302a opened on one side of the fixed plate 301, a mounting rod 302b is arranged on the surface of the mounting groove 302a, and a support plate 302c is arranged on one side of the mounting rod 302b; the expansion component 208 comprises a thread groove 208a opened on the surface of the rotating rod 207d, the thread direction of the thread groove 208a is bidirectional, a positioning block 208b is arranged on the surface of the rotating rod 207d, a transmission block 208c is arranged on one side of the positioning block 208b, the transmission block 208c is transmission-connected to the thread groove 208a, the upper and lower sides of the positioning block 208b and the transmission block 208c are both rotationally connected to the expansion rod 208d, one side of the expansion rod 208d is rotationally connected to the expansion plate 208e, and one side of the expansion plate 208e contacts the inner wall of the reel 207e.

[0053] Specifically, the mounting mechanism 300 can realize the rapid and stable installation of the roll 207e through the mounting component 302 on the fixed plate 301, which greatly improves the automation degree of the equipment and reduces the tediousness and errors of manual operation. The design of the mounting component 302 enables the equipment to adapt to rolls 207e of different specifications and sizes. This flexibility enables the equipment to be widely used in food-grade film production lines of different scales and types. The automated installation function of the mounting mechanism 300 can significantly shorten the roll replacement time, thereby improving the production efficiency of the entire production line.

[0054] Furthermore, the mounting mechanism 300 is responsible for mounting and clamping the reel 207e, so that the vertical plate 204 is driven by the transmission force of the No. 1 screw 203 driven by the No. 1 motor 202, and moves to the right side on the surface of the No. 1 screw 203 by means of the fixing block 401. At this time, the expansion component 208 is in an unexpanded state, so that the rotating rod 207d can be easily moved to the inside of the reel 207e. When the rotating rod 207d enters the inside of the reel 207e, the No. 3 motor 207c drives the rotating rod 207d to rotate. Since the surface of the rotating rod 207d is provided with a bidirectional thread groove 208a, the bidirectional thread groove 208a can be easily moved to the inside of the reel 207e. The positioning block 208b which is connected to the threaded groove 208a and the transmission block 208c will drive the expansion rod 208d to expand outward, and the expansion rod 208d will drive the expansion plate 208e to expand outward, so that the expansion plate 208e is in close contact with the inner wall of the reel 207e. In this way, during the winding process, the film material can be tightly wound on the reel 207e. Under the action of the expansion component 208, the film material is tightly wound on the reel 207e. As the winding proceeds, due to the automatic adjustment function of the expansion component 208, the film material can always maintain a flat and tightly wound state.

[0055] The remaining structure is the same as that of Example 2.

[0056] Example 4

[0057] Reference Figures 1 to 7 , which is the fourth embodiment of the present invention. This embodiment is different from the third embodiment in that: this embodiment provides a material collecting equipment for food-grade film.

[0058] When using this device;

[0059] First, the slitting machine 100 cuts the food-grade film material into a desired width through the cooperation of the rotating shaft 101 and the slitting blade 102. The rotating shaft 101 drives the slitting blade 102 to rotate to achieve cutting of the film material.

[0060] The mounting mechanism 300 is responsible for mounting and clamping the reel 207e, so that the vertical plate 204 is driven by the transmission force of the No. 1 screw 203 driven by the No. 1 motor 202, and moves to the right side on the surface of the No. 1 screw 203 by means of the fixing block 401. At this time, the expansion component 208 is in an unexpanded state, so that the rotating rod 207d can be easily moved to the inside of the reel 207e. When the rotating rod 207d enters the inside of the reel 207e, the No. 3 motor 207c drives the rotating rod 207d to rotate. Since the surface of the rotating rod 207d is provided with a bidirectional thread groove 208a, the bidirectional thread groove 208a is formed on the surface of the rotating rod 207d. The positioning block 208b connected to the groove 208a and the transmission block 208c will drive the expansion rod 208d to expand outward, and the expansion rod 208d drives the expansion plate 208e to expand outward, so that the expansion plate 208e is in close contact with the inner wall of the reel 207e. In this way, during the winding process, the film material can be tightly wound on the reel 207e. Under the action of the expansion component 208, the film material is tightly wound on the reel 207e. As the winding proceeds, due to the automatic adjustment function of the expansion component 208, the film material can always maintain a flat and tightly wound state.

[0061] When a roll of film material is wound up, the unloading mechanism 200 is responsible for conveying the cut film material to the material receiving position, and then drives the film material to be conveyed to the material receiving position, and drives the No. 2 screw 206 to rotate through the No. 2 motor 205, and drives the moving block 207b to move again through the No. 2 screw 206, thereby driving the moving plate 207a to move downward. When the moving plate 207a moves to the bottom, the No. 1 motor 202 drives the No. 1 screw 203 by driving the No. 1 screw 203 to drive the fixed block 401 to move the horizontal plate 201. At this time, the main material receiving plate 402a and the auxiliary material receiving plate 402b work together. The auxiliary material receiving plate 402b moves downward under the action of the electric push rod 408, and clamps the reel 207e together with the main material receiving plate 402a. After the expansion component 208 is reset, the inner wall of the reel 207e is released from the squeezing of the expansion plate 208e, so that the reel 207e can be taken off the rotating rod 207d.

[0062] In summary: after completing the winding and unwinding of one roll of film material, the equipment can repeat the above steps to continue the winding operation of the next roll of film material.

[0063] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible, for example, the size, scale, structure, shape and proportion of various elements, and parameter values ​​such as temperature, pressure, etc., mounting arrangements, use of materials, color, directional changes, etc., without substantially departing from the novel angles and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the execution function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0064] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A food-grade film receiving device, characterized in that: include, A slitting machine (100), the slitting machine (100) comprising a rotating shaft (101) and a slitting blade (102), the rotating shaft (101) and the slitting blade (102) both being arranged on the top of the slitting machine (100); The unloading mechanism (200) comprises horizontal plates (201) arranged at both ends of the front side of the slitting machine (100), a first motor (202) being arranged on the left side of the horizontal plate (201), an output end of the first motor (202) being transmission-connected to a first screw rod (203), one side of the first screw rod (203) passing through the interior of the horizontal plate (201) and being rotationally connected to the inner wall of the horizontal plate (201); and, A vertical plate (204) is arranged at the front side of the horizontal plate (201), a second motor (205) is arranged at the top of the vertical plate (204), an output end of the second motor (205) is connected to a second screw rod (206) in a transmission manner, a bottom of the second screw rod (206) passes through the interior of the vertical plate (204) and is rotatably connected to the inner wall of the vertical plate (204), and a moving component (207) is connected to the surface of the second screw rod (206); and, The mounting mechanism (300) comprises a fixing plate (301) arranged on one side of the slitting machine (100), and a mounting assembly (302) is arranged on the front side of the fixing plate (301).

2. The food-grade film receiving device according to claim 1, characterized in that: The moving assembly (207) comprises a moving plate (207a) arranged on the front side of the vertical plate (204), a moving block (207b) is arranged on the rear side of the moving plate (207a), the upper and lower sides of the moving block (207b) are transmission-connected to the surface of the No. 2 screw rod (206) through threaded holes, a No. 3 motor (207c) is arranged on the front side of the moving block (207b), the output end of the No. 3 motor (207c) is transmission-connected to a rotating rod (207d), a reel (207e) is sleeved on the surface of the rotating rod (207d), and an expansion component (208) is arranged on the surface of the reel (207e).

3. The food-grade film collecting device according to claim 2, characterized in that: The expansion component (208) includes a thread groove (208a) opened on the surface of the rotating rod (207d), the thread direction of the thread groove (208a) is bidirectional, a positioning block (208b) is provided on the surface of the rotating rod (207d), a transmission block (208c) is provided on one side of the positioning block (208b), and the transmission block (208c) is transmission-connected to the thread groove (208a), the upper and lower sides of the positioning block (208b) and the transmission block (208c) are both rotationally connected to the expansion rod (208d), and one side of the expansion rod (208d) is rotationally connected to the expansion plate (208e), and one side of the expansion plate (208e) is in contact with the inner wall of the reel (207e).

4. The food-grade film collecting device according to claim 3, characterized in that: The mounting assembly (302) comprises a mounting groove (302a) opened on one side of the fixing plate (301), a mounting rod (302b) is arranged on the surface of the mounting groove (302a), and a support plate (302c) is arranged on one side of the mounting rod (302b).

5. The food-grade film collecting device according to claim 4, characterized in that: A fixing block (401) is disposed on the rear side of the vertical plate (204), and both left and right sides of the fixing block (401) are transmission-connected to the surface of the No. 2 screw rod (206) through threaded holes.

6. The food-grade film collecting device according to claim 5, characterized in that: The front side of the fixed plate (301) is provided with two material receiving plates (402), the two material receiving plates (402) are divided into a main material receiving plate (402a) and an auxiliary material receiving plate (402b), and the rear side of the main material receiving plate (402a) is fixedly connected to the front side of the fixed plate (301).

7. The food-grade film receiving device according to claim 6, characterized in that: Both ends of the front side of the fixed block (401) are provided with travel grooves (403), the surface of the travel groove (403) is fixedly connected with a vertical rod (404), the surface of the vertical rod (404) is sleeved with a travel block (405) and a spring (406), the upper and lower sides of the spring (406) are respectively fixedly connected to the top of the travel block (405) and the inner wall of the travel groove (403), and the front side of the travel block (405) is fixedly connected to the rear side of the auxiliary material receiving plate (402b).

8. The food-grade film receiving device according to claim 7, characterized in that: A positioning plate (407) is fixedly connected to the front side of the fixed plate (301), an electric push rod (408) is arranged at the bottom of the positioning plate (407), and an output end of the electric push rod (408) is transmission-connected to the top of the auxiliary material receiving plate (402b).

9. A food-grade film collecting method, characterized in that: The food-grade film receiving device according to any one of claims 1 to 8 further comprises: The vertical plate (204) moves to the right for the first time to complete the installation of the reel (207e), and when the vertical plate (204) moves to the right for the second time, the reel (207e) can be taken out.

10. The food-grade film collecting method according to claim 9, characterized in that: The new roll (207e) can be clamped by the initial rightward movement of the vertical plate (204) and then rolled up. When the vertical plate (204) moves to the right for the second time, the roll (207e) can be taken out through the cooperation of the main receiving plate (402a) and the auxiliary receiving plate (402b).

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