Film discharging mechanism and film laminating device

Abstract

The utility model provides a film discharging mechanism and a film covering device. In the initial state, the static clamping piece of the film drawing assembly clamps the free end of the film roll. A first driving component of the film releasing assembly drives a roller to rotate, so that a film roll film material on the roller is released. And a second driving component of the tensioning assembly drives the movable rod to move away from the static clamping piece, so that the membrane material wound on the movable rod is tensioned. And then the movable clamping piece is moved to the static clamping piece, and the free end of the film roll is clamped from the static clamping piece. And the static clamping piece is opened, and the movable clamping piece translates relative to the static clamping piece, so that the membrane material with the preset length is pulled out. And the second driving component does not drive the movable rod, and the movable rod is pulled by the membrane material to move close to the static clamping piece. And after the film material between the movable clamping piece and the static clamping piece is laminated and cut, the next circulation is carried out. The film discharging mechanism can draw out the film with the preset length from the film roll, and the film discharging efficiency is high.

Description

Technical Field

[0001] This application belongs to the technical field of film covering structures, and particularly relates to a film discharging mechanism and a film covering device. Background Art

[0002] In order to preserve and protect products such as fruits, vegetables, etc., these products can be packaged with plastic wrap. Currently, the film material is usually drawn out from the film roll manually and covered on the products, with low work efficiency and unstable quality for multiple film coverings. How to provide a film discharging mechanism and a film covering device, where the film discharging mechanism can draw out the film material from the film roll with high efficiency, and the film covering device has high film covering efficiency and stable quality for multiple film coverings. Content of the Utility Model

[0003] The purpose of the embodiments of this application is to provide a film discharging mechanism and a film covering device, where the film discharging mechanism can draw out the film material from the film roll with high efficiency, and the film covering device has high film covering efficiency and stable quality for multiple film coverings.

[0004] The embodiments of this application provide a film discharging mechanism, including: a film releasing assembly, a film pulling assembly, and a tensioning assembly; the film releasing assembly includes a first driving member and a roller, the first driving member is connected to the roller, the first driving member is used to drive the roller to rotate, and the roller is used to install the film roll; the film pulling assembly includes a stationary clamping member and a movable clamping member, the stationary clamping member can clamp the free end of the film roll; the movable clamping member can clamp the free end of the film roll from the stationary clamping member; when the stationary clamping member is in the open state, the movable clamping member can translate the free end of the film roll a predetermined distance relative to the stationary clamping member; the tensioning assembly includes a second driving member and a movable rod, the second driving member is connected to the movable rod, the movable rod is located on the side of the stationary clamping member away from the movable clamping member, the movable rod is used for the film material of the film roll to be wound around, and the second driving member is used to drive the movable rod to move away from the stationary clamping member.

[0005] In an optional implementation manner, the stationary clamping member includes a first driving part and a pair of first clamping parts, the first driving part is used to drive one of the first clamping parts to move, so that the pair of first clamping parts open or close; the movable clamping member includes a second driving part and a pair of second clamping parts, the second driving part is used to drive one of the second clamping parts to move, so that the pair of second clamping parts open or close; one side of the first clamping part facing the second clamping part has a first tooth part, one side of the second clamping part facing the first clamping part has a second tooth part, and the first tooth part and the second tooth part can be engaged with each other.

[0006] In an alternative implementation, it further includes a linear module, which is connected to the movable clamping member and is used to drive the movable clamping member to translate relative to the stationary clamping member.

[0007] In an alternative implementation, the first driving member includes a first control motor and a first transmission group. The first transmission group is connected between the first control motor and the drum, and the first transmission group is used to convert the output rotation of the first control motor into the rotation of the drum.

[0008] In an alternative implementation, both the first control motor and the drum are arranged on the frame;

[0009] In an alternative implementation, the first transmission group is a synchronous belt mechanism.

[0010] In an alternative implementation, the second driving member includes a second control motor, a second transmission group and a swing arm; the swing arm is pivotally connected to the frame, and the movable rod is installed at the free end of the swing arm; the second transmission group is connected between the second control motor and the swing arm, and the second transmission group is used to convert the output rotation of the second control motor into the rotation of the swing arm.

[0011] In an alternative implementation, the frame is provided with an origin sensor for detecting that the swing arm is at the zero position; when the swing arm is at the zero position, the movable rod is located at a position away from the stationary clamping member so that the film material wound around the movable rod is tensioned;

[0012] In an alternative implementation, the frame has an arc-shaped groove, and the extension route of the arc-shaped groove is centered on the pivot axis of the swing arm. The movable rod passes through the arc-shaped groove; during the swinging process of the swing arm, the movable rod moves along the arc-shaped groove;

[0013] In an alternative implementation, the movable rod includes a shaft rod and a roller, and the roller is rotatably installed on the shaft rod;

[0014] In an alternative implementation, the second transmission group is a synchronous belt mechanism.

[0015] In an alternative implementation, it further includes one or more rollers, which are installed on the frame and are used for the film material to be wound around.

[0016] The beneficial effects of the film discharging mechanism provided by the embodiments of the present application are as follows: In the initial state, the stationary clamping member of the film pulling assembly clamps the free end of the film roll. The first driving member of the film feeding assembly drives the roller to rotate, so that the film material on the roller is discharged. The second driving member of the tensioning assembly drives the movable rod to move away from the stationary clamping member, so that the film material wound around the movable rod is tensioned. Then, the movable clamping member is moved to the stationary clamping member, and the free end of the film roll is clamped from the stationary clamping member. The stationary clamping member is opened, and the movable clamping member translates relative to the stationary clamping member to pull out a predetermined length of film material. During the process of the movable clamping member translating to pull out the film material, the second driving member does not drive the movable rod, and the movable rod is pulled by the film material to move closer to the stationary clamping member. After the film material between the movable clamping member and the stationary clamping member is completed with film covering and cutting, the free end of the film roll is clamped by the stationary clamping member again, the film feeding assembly feeds the film, and the tensioning assembly tensions the film material to enter the next cycle. This film discharging mechanism can extract a predetermined length of film material from the film roll, and the film discharging efficiency is relatively high.

[0017] The embodiments of the present application provide a film covering device, including: a lifting assembly, a film cutting assembly, and the above-mentioned film discharging mechanism; the lifting assembly is located below the film pulling assembly and is used to lift and lower a predetermined object; the film cutting assembly is arranged close to the stationary clamping member and is used to cut and separate part of the film material.

[0018] In an optional implementation manner, the lifting assembly includes a third driving part and a supporting part. The supporting part is connected to the third driving part. The third driving part is used to drive the supporting part to move up and down, and the supporting part is used to support a predetermined object;

[0019] In an optional implementation manner, the film cutting assembly includes a fourth driving part and a sliding knife. The sliding knife is connected to the fourth driving part. The fourth driving part is used to drive the sliding knife to translate.

[0020] The beneficial effects of the film covering device provided by the embodiments of the present application are as follows: The film discharging mechanism can extract a predetermined length of film material from the film roll. The film material between the movable clamping member and the stationary clamping member can be used as a packaging material. The lifting assembly raises the predetermined object so that one side of the predetermined object is covered by the film material, and then the film cutting assembly cuts and separates part of the film material. Then, the lifting assembly lowers the predetermined object to complete film covering. This film covering device has high film covering efficiency and stable film covering quality for multiple times. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 This is the three-dimensional assembly drawing of the film discharging mechanism provided by the embodiment of the present application;

[0023] Figure 2 It is Figure 1 the schematic structural diagram of the film discharging mechanism when a film roll is installed;

[0024] Figure 3 It is Figure 2 the schematic structural diagram of another perspective of the film discharging mechanism;

[0025] Figure 4a , Figure 4b , Figure 4c , Figure 4d They are respectively Figure 2 the schematic diagrams of the film discharging process of the film discharging mechanism;

[0026] Figure 5a , Figure 5b They are respectively Figure 2 the schematic structural diagrams of the film discharging mechanism when the movable clamping member and the stationary clamping member are separated and close to each other;

[0027] Figure 6 It is Figure 3 the schematic structural diagram of the film discharging mechanism when the movable clamping member clamps and drives the free end of the film roll to translate relative to the stationary clamping member to the maximum stroke. Detailed implementation manners

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0031] In the embodiments of the present application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0032] Please refer to Figures 1 to 3 , the embodiments of the present application provide a film discharging mechanism 500, including: a film feeding component 510, a film pulling component 520, and a tensioning component 530. The film feeding component 510 includes a first driving member 511 and a roller 512. The first driving member 511 is connected to the roller 512. The first driving member 511 is used to drive the roller 512 to rotate, and the roller 512 is used to install the film roll 3. The film pulling component 520 includes a stationary clamping member 521 and a movable clamping member 522. The stationary clamping member 521 can clamp the free end 3a of the film roll 3. Combined with Figure 4a , Figure 4b , Figure 4c , the movable clamping member 522 can clamp the free end 3a of the film roll 3 from the stationary clamping member 521. Combined with Figure 4d , when the stationary clamping member 521 is in the open state, the movable clamping member 522 can translate the free end 3a of the film roll 3 a predetermined distance relative to the stationary clamping member 521. The tensioning component 530 includes a second driving member 531 and a movable rod 532. The second driving member 531 is connected to the movable rod 532. The movable rod 532 is located on the side of the stationary clamping member 521 away from the movable clamping member 522. The movable rod 532 is used for the film material 3b of the film roll 3 to be wound around, and the second driving member 531 is used to drive the movable rod 532 to move away from the stationary clamping member 521.

[0033] Among them, the film roll 3 is wound with a film material 3b. The film material 3b can be a plastic wrap or other types of film materials 3b.

[0034] Both the stationary clamping member 521 and the movable clamping member 522 can be opened or closed. The film material 3b can pass through the open stationary clamping member 521 (or the open movable clamping member 522). The closed stationary clamping member 521 (or the closed movable clamping member 522) can clamp the film material 3b.

[0035] In the initial state of the film discharging mechanism 500 provided by the embodiments of the present application, combined with Figure 4a, the stationary clamping member 521 of the film pulling assembly 520 clamps the free end 3a of the film roll 3. The first driving member 511 of the film feeding assembly 510 drives the roller 512 to rotate, so that the film material 3b on the roller 512 is released. The second driving member 531 of the tensioning assembly 530 drives the movable rod 532 to move away from the stationary clamping member 521, so that the film material 3b wound around the movable rod 532 is tensioned. Combined with Figure 4b , then the movable clamping member 522 is moved to the stationary clamping member 521, combined with Figure 4c , and clamps the free end 3a of the film roll 3 from the stationary clamping member 521. Combined with Figure 4d , the stationary clamping member 521 is opened, and the movable clamping member 522 is translated relative to the stationary clamping member 521 to pull out a predetermined length of the film material 3b. During the translation of the movable clamping member 522 to pull out the film material 3b, the second driving member 531 does not drive the movable rod 532, and the movable rod 532 is pulled by the film material 3b to move closer to the stationary clamping member 521. After the film material 3b between the movable clamping member 522 and the stationary clamping member 521 is covered and cut, the free end 3a of the film roll 3 is clamped by the stationary clamping member 521 again, the film feeding assembly 510 feeds the film, and the tensioning assembly 530 tensions the film material 3b to enter the next cycle. The film discharging mechanism 500 can extract a predetermined length of the film material 3b from the film roll 3, and the film discharging efficiency is relatively high.

[0036] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 4a , the stationary clamping member 521 includes a first driving portion 5211 and a pair of first clamping portions 5212. The first driving portion 5211 is used to drive one of the first clamping portions 5212 to move, so that the pair of first clamping portions 5212 are opened or closed. When the stationary clamping member 521 is in the open state, the two first clamping portions 5212 are spaced apart. When the stationary clamping member 521 is in the closed state, the two first clamping portions 5212 are close to each other. The first driving portion 5211 is connected to one of the first clamping portions 5212 to drive the first clamping portion 5212 to move, so as to realize the opening and closing of the stationary clamping member 521.

[0037] The movable clamping member 522 includes a second driving portion 5221 and a pair of second clamping portions 5222. The second driving portion 5221 is used to drive one of the second clamping portions 5222 to move, so that the pair of second clamping portions 5222 are opened or closed. When the movable clamping member 522 is in the open state, the two second clamping portions 5222 are spaced apart. When the movable clamping member 522 is in the closed state, the two second clamping portions 5222 are close to each other. The second driving portion 5221 is connected to one of the second clamping portions 5222 to drive the second clamping portion 5222 to move, so as to realize the opening and closing of the movable clamping member 522.

[0038] Both the first driving part 5211 and the second driving part 5221 can be cylinders, which are easy to control.

[0039] Combined with Figure 2 、 Figure 5a and Figure 5b , on the side where the first clamping part 5212 faces the second clamping part 5222, there is a first tooth part 5212a, and on the side where the second clamping part 5222 faces the first clamping part 5212, there is a second tooth part 5222a. The first tooth part 5212a and the second tooth part 5222a can be engaged with each other. The first tooth part 5212a and the second tooth part 5222a can be engaged with each other means that the first tooth part 5212a and the second tooth part 5222a are embedded in each other. Between adjacent first tooth parts 5212a, a first groove 5212b is formed, and between adjacent second tooth parts 5222a, a second groove 5222b is formed. When the first tooth part 5212a and the second tooth part 5222a are engaged, the first tooth part 5212a is embedded in the second groove 5222b, and the second tooth part 5222a is embedded in the first groove 5212b.

[0040] In the initial state, referring to Figure 2 、 Figure 5a , the stationary clamping part 521 of the film pulling assembly 520 clamps the free end 3a of the film roll 3, and a part of the film material 3b corresponding to the first groove 5212b of the two first clamping parts 5212 is exposed. Combined with Figure 5b , the movable clamping part 522 is moved closer to the stationary clamping part 521, the first tooth part 5212a and the second tooth part 5222a are engaged, and the first tooth part 5212a clamps the exposed part of the film material 3b. Combined with Figure 4c and Figure 4d 、 Figure 6 , when the stationary clamping part 521 is opened, the movable clamping part 522 translates relative to the stationary clamping part 521, so that a predetermined length of the film material 3b can be pulled out.

[0041] Exemplarily, referring to Figure 2 、 Figure 5a , the shape of the first tooth part 5212a is trapezoidal, the shape of the second tooth part 5222a is triangular, and the first tooth part 5212a and the second tooth part 5222a are engaged.

[0042] Exemplarily, the shapes of both the first tooth part 5212a and the second tooth part 5222a are rectangular, and the first tooth part 5212a and the second tooth part 5222a are engaged.

[0043] In some embodiments, please refer to Figures 1 to 3 、 Figure 6, further comprising a linear module 523, the linear module 523 is connected to the movable clamping member 522 and is used to drive the movable clamping member 522 to translate relative to the stationary clamping member 521. The linear module 523 drives the movable clamping member 522 to translate so as to pull out a predetermined length of the film material 3b from the film roll 3. The pulled-out film material 3b between the movable clamping member 522 and the stationary clamping member 521 serves as the packaging material for a predetermined article.

[0044] Exemplarily, the linear module 523 may include a control motor and a lead screw slider mechanism. The control motor drives the lead screw slider mechanism to move and can output a predetermined stroke. The slider of the lead screw slider mechanism serves as the output end of the movable module. The output end of the movable module and the movable clamping member 522 may be connected through a movable frame 524.

[0045] In some embodiments, referring to Figure 1 , the linear module 523 and the stationary clamping member 521 are mounted on the frame 540, and the movable clamping member 522 is mounted on the linear module 523. The linear module 523 can drive the movable clamping member 522 to reciprocate horizontally. The stationary clamping member 521 and the movable clamping member 522 are arranged flush with each other. The frame 540 can position the stationary clamping member 521 and the movable clamping member 522 at a certain height.

[0046] In some embodiments, referring to Figure 3 , the first driving member 511 includes a first control motor 5111 and a first transmission group 5112. The first transmission group 5112 is connected between the first control motor 5111 and the roller 512, and the first transmission group 5112 is used to convert the output rotation of the first control motor 5111 into the rotation of the roller 512. When it is necessary to release the film from the film roll 3, the first control motor 5111 is made to drive the first transmission group 5112 to drive the roller 512 to rotate in a predetermined direction, so as to release the film material 3b of the film roll 3.

[0047] In some embodiments, referring to Figure 1 、 Figure 3 , both the first control motor 5111 and the roller 512 are arranged on the frame 540. The first control motor 5111 and the roller 512 are mounted at predetermined positions, and the first control motor 5111 combined with the first transmission group 5112 can drive the roller 512 to rotate.

[0048] In some embodiments, referring to Figure 3, the first drive group 5112 is a synchronous belt mechanism. The synchronous belt mechanism converts the output rotation of the first control motor 5111 into the rotation of the drum 512. The synchronous belt mechanism may include a first pulley 5112a, a second pulley 5112b, and a first synchronous belt 5112c. The first pulley 5112a is connected to the output shaft of the first control motor 5111, the second pulley 5112b is connected to the drum 512, and the first synchronous belt 5112c is wound around the first pulley 5112a and the second pulley 5112b.

[0049] In some embodiments, please refer to Figure 3 , Figure 6 , the second drive member 531 includes a second control motor 5311, a second drive group 5312, and a swing arm 5313. The swing arm 5313 is pivotally connected to the frame 540, and the movable rod 532 is installed at the free end 5313a of the swing arm 5313. The second drive group 5312 is connected between the second control motor 5311 and the swing arm 5313, and the second drive group 5312 is used to convert the output rotation of the second control motor 5311 into the rotation of the swing arm 5313.

[0050] When it is necessary to move the movable rod 532 away from the stationary clamping member 521 to tighten the film material 3b wound around the movable rod 532, the second control motor 5311 drives the swing arm 5313 to swing in combination with the second drive group 5312, and the movable rod 532 moves with the swing arm 5313.

[0051] Viewed from one side of the swing arm 5313, as Figure 6 shown, after the film material 3b between the stationary clamping member 521 and the movable clamping member 522 is laminated and cut and separated, the movable rod 532 is arranged close to the stationary clamping member 521. The second control motor 5311 and the second drive group 5312 drive the swing arm 5313 to rotate counterclockwise to the position as Figure 3 shown, so that the movable rod 532 is arranged away from the stationary clamping member 521 to tighten the new film material 3b. Viewed from one side of the movable rod 532, as Figure 4d shown, the movable rod 532 is close to the stationary clamping member 521. As Figure 4a shown, the movable rod 532 is away from the stationary clamping member 521 to tighten the new film material 3b.

[0052] Combined with Figure 4d , Figure 6, when the stationary clamping member 521 is in the open state and the movable clamping member 522 clamps and drives the free end 3a of the film roll 3 to translate relative to the stationary clamping member 521, the second control motor 5311 has no power, and the film material 3b wound around the movable rod 532 can pull the movable rod 532 to move closer to the stationary clamping member 521. The movable rod 532 moves along with the swing arm 5313, and the second transmission group 5312 moves along with the swing arm 5313 until the movable clamping member 522 translates a predetermined distance to pull out a predetermined length of the film material 3b.

[0053] In some embodiments, refer to Figure 3 、 Figure 6 , the frame 540 is provided with an origin sensor 533 for detecting that the swing arm 5313 is at the zero position. As Figure 3 、 Figure 4a shown, when the swing arm 5313 is at the zero position, the movable rod 532 is located at a position far from the stationary clamping member 521 so that the film material 3b wound around the movable rod 532 is tensioned. During the process of the tensioning assembly 530 tensioning the film material 3b, the second control motor 5311 drives the second transmission group 5312 and the swing arm 5313 to move, so that the movable rod 532 moves away from the stationary clamping member 521, and the film material 3b wound around the movable rod 532 is tensioned. When the origin sensor 533 detects that the swing arm 5313 is at the zero position, the second driving member 531 stops driving the movable rod 532 to move.

[0054] Combined with Figure 4c 、 Figure 4d , during the process of the movable clamping member 522 clamping and driving the free end 3a of the film roll 3 to translate relative to the stationary clamping member 521, by Figure 4c 、 Figure 4d the movable clamping member 522 translates to the left, and the film material 3b wound around the movable rod 532 pulls the movable rod 532 to move closer to the stationary clamping member 521. Combined with Figure 6 , the movable rod 532 drives the swing arm 5313 to move, and the origin sensor 533 leaves the zero position.

[0055] Exemplarily, refer to Figure 3 , the origin sensor 533 can be a photoelectric sensor, and the photoelectric sensor includes a transmitting end and a receiving end arranged at intervals. A blocking member 534 is installed at the pivot position 5313b of the swing arm 5313, and the blocking member 534 can rotate along with the swing arm 5313. When the swing arm 5313 is at the zero position, the blocking member 534 is located between the transmitting end and the receiving end of the photoelectric sensor, so that the light from the transmitting end cannot irradiate to the receiving end. Combined with Figure 6 , when the swing arm 5313 is in other positions, the light from the transmitting end can irradiate to the receiving end.

[0056] In some embodiments, refer to Figure 1 、 Figure 3 、Figures 4a to 4d The frame 540 has an arc-shaped groove 541, and the extension route of the arc-shaped groove 541 is centered on the pivot axis of the swing arm 5313. The movable rod 532 is inserted through the arc-shaped groove 541. During the swinging process of the swing arm 5313, the movable rod 532 moves along the arc-shaped groove 541. By arranging the movable rod 532 on the front side of the frame 540 and the swing arm 5313 and the second transmission group 5312 on the back side of the frame 540, the swing arm 5313 and the second transmission group 5312 can be better protected.

[0057] In some embodiments, please refer to Figure 1 , the movable rod 532 includes a shaft rod 5321 and a roller 5322, and the roller 5322 is rotatably mounted on the shaft rod 5321. The frictional force between the movable rod 532 and the film material 3b is small, which is convenient for the movable clamping member 522 to clamp and drive the free end 3a of the film roll 3 to translate to pull out a predetermined length of the film material 3b.

[0058] In some embodiments, please refer to Figure 3 , Figure 6 , the second transmission group 5312 is a synchronous belt mechanism. The synchronous belt mechanism converts the output rotation of the second control motor 5311 into the swing of the swing arm 5313. The synchronous belt mechanism may include a third pulley 5312a, a fourth pulley 5312b, and a second synchronous belt 5312c. The third pulley 5312a is connected to the output shaft of the second control motor 5311, the fourth pulley 5312b is connected to the pivot position of the swing arm 5313, and the second synchronous belt 5312c is wound around the third pulley 5312a and the fourth pulley 5312b.

[0059] In some embodiments, please refer to Figure 1 , Figure 2 , Figures 4a to 4d , further includes one or more rollers 542, and the rollers 542 are installed on the frame 540 for the film material 3b to be wound around. The extension route of the film material 3b and the direction of the free end 3a of the film roll 3 can be adjusted through the rollers 542, and the combination of the rollers 542 and the movable rod 532 can achieve the limitation of the predetermined length of the film material 3b.

[0060] Exemplarily, the frame 540 is provided with three rollers 542, namely a first roller 542a, a second roller 542b, and a third roller 542c. The first roller 542a, the second roller 542b, and the third roller 542c are arranged in the up-down direction below the roller 512. The film material 3b coming out of the film roll 3 of the roller 512 is sequentially wound around the first roller 542a, the movable rod 532, the second roller 542b, and the third roller 542c. The third roller 542c is flush with the stationary clamping member 521, so that the film material 3b can pass through the stationary clamping member 521 along a predetermined direction.

[0061] Please refer to Figure 1, Figure 2 , an embodiment of the present application provides a film laminating device, including: a lifting assembly, a film cutting assembly 560, and the above-mentioned film feeding mechanism 500. The lifting assembly is located below the film pulling assembly 520 and is used to lift and lower a predetermined object. The film cutting assembly 560 is disposed close to the stationary clamping member 521 and is used to cut and separate a part of the film material 3b.

[0062] Among them, the predetermined object can be a packaging box, and products such as fruits and vegetables can be contained in the packaging box.

[0063] For the film laminating device provided by the embodiment of the present application, the film feeding mechanism 500 can extract a predetermined length of the film material 3b from the film roll 3. The film material 3b between the movable clamping member 522 and the stationary clamping member 521 can be used as a packaging material. The lifting assembly raises the predetermined object so that one side of the predetermined object is covered by the film material 3b, and then the film cutting assembly 560 cuts and separates a part of the film material 3b. Then, the lifting assembly lowers the predetermined object to complete film lamination. The film laminating device has high film laminating efficiency and stable film laminating quality for multiple times.

[0064] In some embodiments, the lifting assembly includes a third driving part and a supporting part. The supporting part is connected to the third driving part. The third driving part is used to drive the supporting part to move up and down, and the supporting part is used to support the predetermined object. The third driving part can be a cylinder, which is easy to control.

[0065] In some embodiments, please refer to Figure 6 , the film cutting assembly 560 includes a fourth driving part 561 and a sliding knife 562. The sliding knife 562 is connected to the fourth driving part 561. The fourth driving part 561 is used to drive the sliding knife 562 to translate. After the lifting assembly raises the predetermined object so that one side of the predetermined object is covered by the film material 3b, the fourth driving part 561 drives the sliding knife 562 to translate to cut and separate a part of the film material 3b. The fourth driving part 561 can be a cylinder, which is easy to control.

[0066] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A film discharging mechanism, characterized in that, Comprising: A film unwinding assembly, a film pulling assembly, and a tensioning assembly; The film unwinding assembly includes a first driving member and a roller, the first driving member is connected to the roller, the first driving member is used to drive the roller to rotate, and the roller is used to mount a film roll; The film pulling assembly includes a stationary clamping member and a movable clamping member, the stationary clamping member can clamp the free end of the film roll; the movable clamping member can clamp the free end of the film roll from the stationary clamping member; When the stationary clamping member is in an open state, the movable clamping member can translate the free end of the film roll a predetermined distance relative to the stationary clamping member; The tensioning assembly includes a second driving member and a movable rod, the second driving member is connected to the movable rod, the movable rod is located on a side of the stationary clamping member away from the movable clamping member, the movable rod is used for the film material of the film roll to be wound around, and the second driving member is used to drive the movable rod to move away from the stationary clamping member.

2. The film discharging mechanism according to claim 1, characterized in that, The stationary clamping member includes a first driving part and a pair of first clamping parts, the first driving part is used to drive one of the first clamping parts to move, so that the pair of first clamping parts open or close; The movable clamping member includes a second driving part and a pair of second clamping parts, the second driving part is used to drive one of the second clamping parts to move, so that the pair of second clamping parts open or close; One side of the first clamping part facing the second clamping part has a first tooth part, one side of the second clamping part facing the first clamping part has a second tooth part, and the first tooth part and the second tooth part can be engaged with each other.

3. The film outlet mechanism according to claim 2, characterized in that, It further includes a linear module, the linear module is connected to the movable clamping member, and is used to drive the movable clamping member to translate relative to the stationary clamping member.

4. The film outlet mechanism according to claim 1, characterized in that, The first driving member includes a first control motor and a first transmission group, the first transmission group is connected between the first control motor and the roller, and the first transmission group is used to convert the output rotation of the first control motor into the rotation of the roller.

5. The film discharging mechanism according to claim 4, characterized in that, Both the first control motor and the roller are arranged on a frame; And / or, the first transmission group is a synchronous belt mechanism.

6. The film discharging mechanism according to any one of claims 1 to 5, characterized in that, The second driving member includes a second control motor, a second transmission group, and a swing arm; The swing arm is pivotally connected to the frame, and the movable rod is installed at the free end of the swing arm; The second transmission group is connected between the second control motor and the swing arm, and the second transmission group is used to convert the output rotation of the second control motor into the rotation of the swing arm.

7. The film discharging mechanism according to claim 6, characterized in that, The frame is provided with an origin inductor for detecting that the swing arm is at the zero position; when the swing arm is at the zero position, the movable rod is located at a position away from the stationary clamping member, so that the film material wound around the movable rod is tensioned; And / or, the frame has an arc-shaped groove, the extension route of the arc-shaped groove is centered on the pivot axis of the swing arm, and the movable rod passes through the arc-shaped groove; during the swinging process of the swing arm, the movable rod moves along the arc-shaped groove; And / or, the movable rod includes a shaft rod and a roller, and the roller is rotatably installed on the shaft rod; And / or, the second transmission group is a synchronous belt mechanism.

8. The film discharging mechanism according to any one of claims 1 to 5, characterized in that, It further includes one or more rollers, which are installed on the frame and used for the film material to be wound around.

9. A film laminating device, characterized in that, Comprising: A lifting assembly, a film cutting assembly, and a film discharging mechanism according to any one of claims 1 to 8; The lifting assembly is located below the film pulling assembly and is used for lifting and lowering a predetermined object; The film cutting assembly is arranged close to the stationary clamping member and is used for cutting and separating a part of the film material.

10. The film laminating device according to claim 9, characterized in that, The lifting assembly includes a third driving part and a supporting part. The supporting part is connected to the third driving part. The third driving part is used for driving the supporting part to move up and down, and the supporting part is used for supporting a predetermined object; And / or, the film cutting assembly includes a fourth driving part and a sliding knife. The sliding knife is connected to the fourth driving part. The fourth driving part is used for driving the sliding knife to translate.

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