Film feeding mechanism of packaging machine

Abstract

The utility model discloses a film feeding mechanism of a packaging machine. The film feeding mechanism comprises a film feeding frame, a folded film feeding assembly and an adhesive tape feeding assembly. The film sticking assembly is arranged on the film feeding frame and located on the side close to the folded film feeding assembly, the film sticking assembly comprises a film sticking driving part, an upper film feeding roller and a lower film feeding roller, and the output end of the film sticking driving part is connected with the upper film feeding roller or the lower film feeding roller; the film drawing assembly is arranged on the film feeding frame and located on the side close to the cutting and sealing assembly, the film drawing assembly comprises a first film drawing driving part, a first upper film drawing roller and a first lower film drawing roller, and the output end of the first film drawing driving part is connected with the first upper film drawing roller or the first lower film drawing roller; the folding film and the adhesive tape are sequentially wound around the film sticking assembly and the film pulling assembly, the folding film and the adhesive tape are bonded between the upper film feeding roller and the lower film feeding roller, additional manpower or machines are not needed for bonding, and the packaging efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, and in particular to a film feeding mechanism for a packaging machine. Background Technology

[0002] Film packaging machines typically include the following components: bag making, bag feeding, bag opening, material feeding, and sealing. Bag making refers to the process of preparing a packaging bag from a film.

[0003] like Figure 1 As shown, Figure 1 This is a type of packaging bag comprising a double-layered bag body. The lower layer of the bag body is connected to a flange with an adhesive strip. After the bag is filled with an object, the flange flips along the flange line, and the adhesive strip adheres the flange to the upper layer of the double-layered bag body, thus sealing the bag opening. In existing technologies, the adhesive strip is applied manually or by machine after bag manufacturing, which is inefficient. Utility Model Content

[0004] Based on the above, the purpose of this utility model is to provide a film feeding mechanism for a packaging machine, which completes the bonding of adhesive strips during the film feeding process before bag making, thereby improving packaging efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a film feeding mechanism for a packaging machine, comprising:

[0007] A film feeding frame has a folded film feeding assembly and an adhesive tape feeding assembly at one end and a cutting and sealing assembly at the other end. The folded film feeding assembly is located above the adhesive tape feeding assembly. Folded film is wound on the folded film feeding assembly and adhesive tape is wound on the adhesive tape feeding assembly.

[0008] A film-adhesive assembly is disposed on the film feeding frame and located on the side close to the folded film feeding assembly. It includes a film-adhesive drive unit, an upper film feeding roller, and a lower film feeding roller, with the output end of the film-adhesive drive unit connected to either the upper or lower film feeding roller.

[0009] A film pulling assembly is disposed on the film feeding frame and located on the side close to the cutting and sealing assembly. It includes a first film pulling drive unit, a first upper film pulling roller and a first lower film pulling roller. The output end of the first film pulling drive unit is connected to the first upper film pulling roller or the first lower film pulling roller.

[0010] The folded film and the adhesive tape pass sequentially around the film-adhesive assembly and the film-pulling assembly, and the folded film and the adhesive tape are bonded between the upper film-feeding roller and the lower film-feeding roller.

[0011] Furthermore, the film feeding frame is also provided with a film continuing assembly, which includes n sets of upper film continuing rollers and m sets of lower film continuing rollers. The upper film continuing rollers are located above the upper film continuing rollers. The film feeding frame is rotatably mounted on the film feeding frame. The upper film continuing rollers are rotatably mounted on the film feeding frame, and the lower film continuing rollers are rotatably mounted on the film continuing frame, where m = n - 1.

[0012] A second film-pulling roller is rotatably arranged above the upper film-continuing roller;

[0013] The folded film, already attached with adhesive tape, sequentially and cyclically passes over n sets of upper film rollers and m sets of lower film rollers, and then passes over the second film-pulling roller to be conveyed to the film-pulling assembly.

[0014] Furthermore, n equals 4 and m equals 3.

[0015] Furthermore, the film feeding frame is also provided with a second film pulling drive unit, the second film pulling roller is rotatably mounted on the film feeding frame, and the output end of the second film pulling drive unit is connected to the second film pulling roller.

[0016] Furthermore, the film feeding frame is also rotatably equipped with a first reversing roller group, a second reversing roller, a third reversing roller, a fourth reversing roller, and a fifth reversing roller group;

[0017] The first reversing roller group and the second reversing roller are disposed near the top of the film feeding frame, the fifth reversing roller group is disposed near the bottom of the film feeding frame, and the third and fourth reversing rollers are disposed in the middle of the film feeding frame.

[0018] After the folded film with adhesive tape is applied passes around the second film-pulling roller, it then passes around the first reversing roller group, the second reversing roller, the third reversing roller, the fourth reversing roller, and the fifth reversing roller group in sequence before being conveyed to the film-pulling assembly.

[0019] Furthermore, the folded film feeding assembly includes a folded film feeding tray, a first tensioning roller, a second tensioning roller, and a third tensioning roller;

[0020] After being fed out of the folded film feed tray, the film passes sequentially around the first tension roller, the second tension roller, and the third tension roller.

[0021] Furthermore, the tape feeding assembly includes a tape feeding tray, a first tensioning roller, a second tensioning roller, and a third tensioning roller;

[0022] After being fed from the adhesive tape feeder, the tape passes sequentially around the first tensioning roller, the second tensioning roller, and the third tensioning roller.

[0023] Furthermore, the film feeding frame is also equipped with a take-up tray assembly, which includes a take-up motor, and the output end of the take-up motor is provided with a take-up tray. The beneficial effects of this utility model are:

[0024] This utility model provides a film feeding mechanism for a packaging machine. By setting an adhesive tape feeding component, during the film feeding process, the folded film and the adhesive tape sequentially pass around the film adhesive component and the film pulling component. The folded film and the adhesive tape are bonded between the upper film feeding roller and the lower film feeding roller. The adhesive tape is bonded during the film feeding process, eliminating the need for additional manual or machine bonding and improving packaging efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a packaging bag in the background art;

[0027] Figure 2 This is a schematic diagram of the structure of the folded film according to an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the adhesive tape structure according to an embodiment of the present invention;

[0029] Figure 4 This invention provides a schematic diagram of the structure of a film feeding mechanism for a packaging machine, as shown in the embodiments of the present invention.

[0030] Figure 5 This invention provides a structural schematic diagram of another view of the film feeding mechanism of a packaging machine according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the running pattern according to an embodiment of the present invention.

[0032] In the picture:

[0033] 1. Folded film; 11. Double-layer bag body; 12. Folded edge; 2. Adhesive tape; 21. Adhesive strip; 22. Release paper; 31. Film feeder; 311. Folded film feeding assembly; 3111. Folded film feeding tray; 3112. First tension roller; 3113. Second tension roller; 3114. Third tension roller; 312. Adhesive tape feeding assembly; 3121. Adhesive tape feeding tray; 3122. First tension roller; 3123. Second tension roller; 3124. Third tension roller; 313. Sealing assembly; 32. Adhesive film assembly; 321. Adhesive film drive unit 322. Upper film feeding roller; 323. Lower film feeding roller; 33. Film pulling assembly; 331. First film pulling drive unit; 332. First upper film pulling roller; 333. First lower film pulling roller; 34. Film reconnection assembly; 341. Upper film reconnection roller; 342. Lower film reconnection roller; 343. Film reconnection frame; 344. Second film pulling roller; 351. First reversing roller group; 352. Second reversing roller; 353. Third reversing roller; 354. Fourth reversing roller; 355. Fifth reversing roller group; 36. Take-up tray assembly; 361. Take-up motor; 362. Take-up tray. Detailed Implementation

[0034] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] like Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of the folded film 1 according to an embodiment of the present utility model. The folded film 1 includes a double-layer bag body 11 and a flange 12. Figure 3 This is a schematic diagram of the structure of the adhesive tape 2 provided in an embodiment of the present invention. The adhesive tape 2 includes an adhesive strip 21 and a release paper 22. In the bag making process, the adhesive strip 21 is adhered to the flange.

[0039] like Figures 4 to 6As shown, this utility model embodiment provides a film feeding mechanism for a packaging machine, including: a film feeding frame 31, one end of which is provided with a folded film feeding assembly 311 and an adhesive tape feeding assembly 312, and the other end is provided with a cutting and sealing assembly 313. The cutting and sealing assembly 313 is not an innovation of this utility model and will not be elaborated here; the folded film feeding assembly 311 is located above the adhesive tape feeding assembly 312, the folded film feeding assembly 311 is wound with folded film 1, and the adhesive tape feeding assembly 312 is wound with adhesive tape 2; and an adhesive film assembly 32 is disposed on the film feeding frame 31, located on the side close to the folded film feeding assembly. It includes a film-adhesive driving unit 321, an upper film-feeding roller 322, and a lower film-feeding roller 323. The output end of the film-adhesive driving unit 321 is connected to the upper film-feeding roller 322 or the lower film-feeding roller 323. The film-adhesive driving unit 321 is a drive motor. Both the upper film-feeding roller 322 and the lower film-feeding roller 323 are rotatably connected to the film-feeding frame 31. The film-adhesive driving unit 321 can drive the upper film-feeding roller 322 or the lower film-feeding roller 323 to rotate. A film-pulling assembly 33 is disposed on the film-feeding frame 31, located on the side close to the cutting and sealing assembly 313. It includes a first film-pulling driving unit 331, a first upper film-pulling roller 332, and a first lower film-pulling roller 333. The first film-pulling driving unit... The output end of 331 is connected to the first upper film-pulling roller 332 or the first lower film-pulling roller 333; the first film-pulling drive unit 331 is a drive motor, and the first upper film-pulling roller 332 and the first lower film-pulling roller 333 are rotatably connected to the film feeding frame 31. The first film-pulling drive unit 331 can drive the first lower film-pulling roller 333 or the first upper film-pulling roller 332 to rotate; the film-pulling assembly 33 and the adhesive film assembly 32 provide power for the entire film feeding process; the folded film 1 and the adhesive tape 2 pass around the adhesive film assembly 32 and the film-pulling assembly 33 in sequence, and the folded film 1 and the adhesive tape 2 are bonded between the upper film feeding roller 322 and the lower film feeding roller 323.

[0040] This utility model provides a film feeding mechanism for a packaging machine. By setting an adhesive tape feeding assembly 312, during the film feeding process, the folded film 1 and the adhesive tape 2 sequentially pass around the adhesive tape assembly 32 and the film pulling assembly 33. The folded film 1 and the adhesive tape 2 are bonded between the upper film feeding roller 322 and the lower film feeding roller 323. The bonding of the adhesive strip 21 is completed during the film feeding process, eliminating the need for additional manual or machine bonding and improving packaging efficiency.

[0041] During the cutting and sealing process, the already completed folded film 1 needs to be cut and heat-sealed simultaneously to form individual packaging bags. Therefore, the film pulling assembly 33 pulls the film, stops, cuts, and heat-seals it. After cutting and heat-sealing, it pulls the film again, stops again, and so on in a cycle. At the same time, the upper film feeding roller 322 and the lower film feeding roller 323 of the adhesive film assembly 32 also rotate and stop repeatedly. This constant rotation and stopping presents two problems: First, the greater pulling force during startup may deform the adhesive tape 2 or the film. Second, when stopping, due to inertia, the folded film 1 and adhesive tape 2 will wrinkle and pile up at the entrance positions of the upper film feeding roller 322 and the lower film feeding roller 323, or even prematurely complete the bonding, resulting in disordered and substandard bonding. To solve these two problems, the adhesive film driving unit 321 is continuously driven. The upper film feeding roller 322 or the lower film feeding roller 323 rotates. The film feeding frame 31 is also provided with a film continuing assembly 34. The film continuing assembly 34 includes n sets of upper film continuing rollers 341 and m sets of lower film continuing rollers 342. The upper film continuing rollers 341 are located above the upper film continuing rollers 341. The film feeding frame 31 is rotatably provided with a film continuing frame 343. The upper film continuing rollers 341 are rotatably provided on the film feeding frame 31. The lower film continuing rollers 342 are rotatably provided on the film continuing frame 343. m = n-1. In this embodiment, n equals 4 and m equals 3. A second film pulling roller 344 is also rotatably provided above the upper film continuing roller 341. The folded film 1, which has been attached with adhesive tape 2, sequentially and cyclically passes around the n sets of upper film continuing rollers 341 and the m sets of lower film continuing rollers 342, and then passes around the second film pulling roller 344 to be conveyed to the film pulling assembly 33.

[0042] In this embodiment of the invention, the upper film feeding roller 341 is fixed, while the lower film feeding roller 342 rotates on the film feeding frame 343 and can swing with the film feeding frame 343. When the first upper film pulling roller 332 and the first lower film pulling roller 333 are rotating, the film feeding frame 343 will swing slightly upward. When the first upper film pulling roller 332 and the first lower film pulling roller 333 stop rotating, the upper film feeding roller 322 and the lower film feeding roller 323 continue to rotate and feed film. As the film becomes longer, the film feeding frame 343 will swing slightly downward under automatic gravity. When the first upper film pulling roller 332 and the first lower film pulling roller 333 rotate again, the film feeding frame 343 swings slightly upward again. This cycle repeats, while the upper film feeding roller 322 and the lower film feeding roller 323 remain rotating. This solves the problems of mold deformation, wrinkle stacking and adhesion when the upper film feeding roller 322 and the lower film feeding roller 323 start and stop, and ensures the stability of film feeding. Furthermore, by setting multiple sets of upper film-continuing rollers 341 and lower film-continuing rollers 342, the swaying amplitude of the film-continuing frame 343 is small when starting and stopping. Furthermore, by setting a second film-pulling roller 344, a second film-pulling drive unit (not shown) is also provided on the film-feeding frame 31. The second film-pulling roller 344 is rotatably mounted on the film-feeding frame 31. The output end of the second film-pulling drive unit is connected to the second film-pulling roller 344. The second film-pulling roller 344 provides a film-pulling power. Like the first upper film-pulling roller 332 and the first lower film-pulling roller 333, the second film-pulling roller 344 rotates once and stops once. By setting the second film-pulling roller 344, the vibration of the entire film-continuing frame 343 can be prevented from being too violent and producing abnormal noise.

[0043] like Figures 3 to 5 As shown, the film feeding frame 31 is also rotatably equipped with a first reversing roller group 351, a second reversing roller 352, a third reversing roller 353, a fourth reversing roller 354, and a fifth reversing roller group 355; the first reversing roller group 351 and the second reversing roller 352 are located near the top of the film feeding frame 31, the fifth reversing roller group 355 is located near the bottom of the film feeding frame 31, and the third reversing roller 353 and the fourth reversing roller 354 are located in the middle of the film feeding frame 31; the folded film 1, which has been attached with adhesive tape 2, passes around the second film pulling roller 344, and then passes around the first reversing roller group 351, the second reversing roller 352, the third reversing roller 353, the fourth reversing roller 354, and the fifth reversing roller group 355 in sequence, before being conveyed to the film pulling assembly 33. Specifically, in this embodiment, the first reversing roller group 351, the second reversing roller 352, the third reversing roller 353, the fourth reversing roller 354 and the fifth reversing roller group 355 not only tension the film, but also guide the direction and orientation of the film.

[0044] like Figures 4 to 6As shown, the folded film feeding assembly 311 includes a folded film feeding tray 3111, a first tensioning roller 3112, a second tensioning roller 3113, and a third tensioning roller 3114. The folded film 1 is fed from the folded film feeding tray 3111 and sequentially passes over the first tensioning roller 3112, the second tensioning roller 3113, and the third tensioning roller 3114. The first tensioning roller 3112, the second tensioning roller 3113, and the third tensioning roller 3114 keep the folded film 1 taut. Simultaneously, the second tensioning roller 3113 can be selected as a correction roller. With the cooperation of a correction photoelectric sensor, deviation can be detected during film feeding and correction can be performed. The principle of how the correction is performed is prior art and will not be elaborated here.

[0045] like Figures 3 to 5 As shown, the adhesive tape feeding assembly 312 includes an adhesive tape feeding tray 3121, a first tensioning roller 3122, a second tensioning roller 3123, and a third tensioning roller 3124. After the adhesive tape 2 is fed out from the adhesive tape feeding tray 3121, it passes sequentially around the first tensioning roller 3122, the second tensioning roller 3123, and the third tensioning roller 3124. The first tensioning roller 3122, the second tensioning roller 3123, and the third tensioning roller 3124 keep the adhesive tape 2 taut during conveying.

[0046] like Figure 4 and 5 As shown, the film feeding frame is also equipped with a take-up tray assembly 36, which includes a take-up motor 361 and a take-up tray 362 at the output end of the take-up motor 361. Specifically, before the adhesive tape 2 on the folded film 1 enters the first upper pull film roller 332 and the first lower pull film roller 333, the release paper 22 needs to be torn off. The release paper 22 can be wound on the take-up tray 362. The take-up motor 361 drives the take-up tray 362 to rotate, and during the film feeding process, the release paper 22 is torn off and wound up.

[0047] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A packaging machine film feeding mechanism, characterized in that, include: A film feeding frame has a folded film feeding assembly and an adhesive tape feeding assembly at one end and a cutting and sealing assembly at the other end. The folded film feeding assembly is located above the adhesive tape feeding assembly. Folded film is wound on the folded film feeding assembly and adhesive tape is wound on the adhesive tape feeding assembly. A film-adhesive assembly is disposed on the film feeding frame and located on the side close to the folded film feeding assembly. It includes a film-adhesive drive unit, an upper film feeding roller, and a lower film feeding roller. The output end of the film-adhesive drive unit is connected to the upper film feeding roller or the lower film feeding roller. A film pulling assembly is disposed on the film feeding frame and located on the side close to the cutting and sealing assembly. It includes a first film pulling drive unit, a first upper film pulling roller and a first lower film pulling roller. The output end of the first film pulling drive unit is connected to the first upper film pulling roller or the first lower film pulling roller. The folded film and the adhesive tape pass sequentially around the film-adhesive assembly and the film-pulling assembly, and the folded film and the adhesive tape are bonded between the upper film-feeding roller and the lower film-feeding roller.

2. A packaging machine film feed mechanism according to claim 1, characterised in that, The film feeding frame is also provided with a film continuing assembly, which includes n sets of upper film continuing rollers and m sets of lower film continuing rollers. The upper film continuing rollers are located above the upper film continuing rollers. The film feeding frame is rotatably provided with a film continuing frame, the upper film continuing rollers are rotatably provided on the film feeding frame, and the lower film continuing rollers are rotatably provided on the film continuing frame, where m = n-1. A second film-pulling roller is rotatably arranged above the upper film-continuing roller; The folded film, already attached with adhesive tape, sequentially and cyclically passes over n sets of upper film rollers and m sets of lower film rollers, and then passes over the second film-pulling roller to be conveyed to the film-pulling assembly.

3. The film feeding mechanism of a packaging machine according to claim 2, characterized in that, The n equals 4 and the m equals 3.

4. The film feeding mechanism of a packaging machine according to claim 2, characterized in that, The film feeding frame is also provided with a second film pulling drive unit, and the second film pulling roller is rotatably mounted on the film feeding frame. The output end of the second film pulling drive unit is connected to the second film pulling roller.

5. A film feeding mechanism for a packaging machine according to claim 2, characterized in that, The film feeding frame is also rotatably equipped with a first reversing roller group, a second reversing roller, a third reversing roller, a fourth reversing roller, and a fifth reversing roller group; The first reversing roller group and the second reversing roller are disposed near the top of the film feeding frame, the fifth reversing roller group is disposed near the bottom of the film feeding frame, and the third and fourth reversing rollers are disposed in the middle of the film feeding frame. After the folded film with adhesive tape is applied passes around the second film-pulling roller, it then passes around the first reversing roller group, the second reversing roller, the third reversing roller, the fourth reversing roller, and the fifth reversing roller group in sequence before being conveyed to the film-pulling assembly.

6. The film feeding mechanism of a packaging machine according to claim 1, characterized in that, The folded film feeding assembly includes a folded film feeding tray, a first tensioning roller, a second tensioning roller, and a third tensioning roller; After being fed out of the folded film feed tray, the film passes sequentially around the first tension roller, the second tension roller, and the third tension roller.

7. The film feeding mechanism of a packaging machine according to claim 1, characterized in that, The adhesive tape feeding assembly includes an adhesive tape feeding tray, a first tensioning roller, a second tensioning roller, and a third tensioning roller; After being fed from the adhesive tape feeder, the tape passes sequentially around the first tensioning roller, the second tensioning roller, and the third tensioning roller.

8. The film feeding mechanism of a packaging machine according to claim 1, characterized in that, The film feeding frame is also equipped with a receiving tray assembly, which includes a receiving motor, and the output end of the receiving motor is equipped with a receiving tray.

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