Film supply mechanism

Abstract

The utility model relates to the technical field of packaging, in particular to a film supply mechanism which comprises a machine frame body, a film supply component and a conveying component. The film supply part is mounted at the bottom of the rack main body, is used for placing a film roll, and comprises a film rolling shaft and a variable speed motor which are rotationally connected; the conveying part is used for conveying a film and comprises a roller, a photoelectric sensor and a brake motor which are mounted on the rack main body; wherein the film roll is fixed on the film rolling shaft, the film rolling shaft rotates through the variable speed motor to convey a film to the roller, and the position of the film is detected through the photoelectric sensor to control the brake motor. And through mutual cooperation of the film supply component and the conveying component and reasonable regulation and control of the variable-speed motor and the brake motor, stable conveying of the film is kept. The problems that due to the fact that a film supply mechanism is not reasonable enough in design, film feeding is unstable, and films are stacked or torn are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a film feeding mechanism. Background Art

[0002] The film feeding mechanism is an important part of modern packaging machinery. Its main function is to stretch the roll-shaped packaging film into a strip according to requirements and convey it to the predetermined station one by one for forming and filling packaging. The existing film feeding mechanism is not reasonably designed, resulting in unstable film feeding, easy deviation of the film, and improper adjustment of the film tension, leading to film accumulation or tearing. Summary of the Utility Model

[0003] In order to solve the problems of unreasonable design of the film feeding mechanism, resulting in unstable film feeding, film accumulation or tearing.

[0004] The utility model provides a film feeding mechanism, which includes a frame body, a film feeding component and a conveying component; the film feeding component is installed at the bottom of the frame body and is used for placing the film roll. The film feeding component includes a film winding shaft and a variable-speed motor which are rotationally connected; the conveying component is used for conveying the film, and the conveying component includes a roller, a photoelectric sensor and a brake motor installed on the frame body; wherein, the film roll is fixed on the film winding shaft, and the film is conveyed to the roller by rotating the film winding shaft through the variable-speed motor, and the brake motor is controlled by detecting the position of the film through the photoelectric sensor.

[0005] Preferably, a driving gear is fixedly connected to one side of the variable-speed motor, a driven gear meshing with the driving gear is arranged on the side of the film winding shaft close to the variable-speed motor, and the frame body is provided with a first bearing, and the first bearing is located at the bottom of both ends of the film winding shaft.

[0006] Preferably, the film feeding component further includes a fixing block installed on the frame body, and the fixing block is used for fixing the film winding shaft.

[0007] Preferably, both the film winding shaft and the roller are provided with limiting rings, and the limiting rings are used for limiting the position of the film.

[0008] Preferably, the film winding shaft is an air shaft.

[0009] Preferably, the roller includes a fixed roller and a swing roller. The two sides of the fixed roller are rotationally connected to the frame body, the brake motor is fixedly connected to one end of the fixed roller, the conveying component further includes two swing arms, the swing arms are symmetrically pinned to both sides of the frame body, and both ends of the swing roller are rotationally connected to the swing arms.

[0010] Preferably, the conveying component further includes an adjusting component, and the adjusting component includes a first guide rod, a first guide rail and a second guide rail; both ends of the first guide rod are fixedly connected to the frame body and are parallel to each other, both ends of the first guide rail are respectively connected to the first guide rods on both sides and are parallel to each other, both ends of the second guide rail are respectively slidably connected to the first guide rails on both sides, and the photoelectric sensor is slidably connected to the second guide rail.

[0011] Preferably, the film supply mechanism further includes a laser component, which includes a laser coding machine and a coding plate arranged opposite to each other. Both ends of the coding plate are fixedly connected to the main body of the frame, the main body of the frame is connected with a driving member, and the laser coding machine is connected to the top of the driving member.

[0012] Preferably, the film supply mechanism further includes a cutting component, which includes a first guide member, a first hob, a second guide member, a hob support member, and a second hob. Both ends of the first guide member are rotatably connected to the main body of the frame, the first hob is fixedly connected to the first guide member, both ends of the second guide member are fixedly connected to the main body of the frame, the hob support member is connected to the second guide member, the second hob is rotatably connected to the top of the hob support member, and the number of the first hob and the second hob is equal and their positions correspond to each other.

[0013] Preferably, the film supply mechanism further includes a film receiving plate fixedly connected to the main body of the frame at both ends, and the film receiving plate is provided with a knife groove.

[0014] The beneficial effects of the present utility model are reflected in that through the mutual cooperation of the film supply component and the conveying component, the reasonable regulation of the variable-speed motor and the brake motor keeps the stable conveying of the film. It solves the problems that the design of the film supply mechanism is not reasonable enough, resulting in unstable film feeding, film accumulation or tearing. Description of the Drawings

[0015] Figure 1 One of the three-dimensional views provided by the present utility model.

[0016] Figure 2 Provided by the present utility model Figure 1 The enlarged view of area A in

[0017] Figure 3 Provided by the present utility model Figure 1 The enlarged view of area A from another perspective in

[0018] Figure 4 Another three-dimensional view provided by the present utility model.

[0019] Figure 5 Another three-dimensional view provided by the present utility model.

[0020] Figure 6 The cross-sectional view provided by the present utility model.

[0021] In the figure: 1 - frame main body; 11 - first bearing; 2 - film feeding component; 21 - film winding shaft; 211 - passive gear; 212 - limit ring; 22 - variable speed motor; 221 - driving gear; 23 - fixing block; 3 - conveying component; 31 - roller; 311 - fixed roller; 312 - swinging roller; 32 - photoelectric sensor; 33 - braking motor; 34 - swing arm; 35 - adjusting component; 351 - first guide rod; 352 - first guide rail; 353 - second guide rail; 4 - laser component; 41 - laser coding machine; 42 - coding plate; 43 - driving part; 5 - cutting component; 51 - first guiding part; 52 - first hob; 53 - second guiding part; 54 - hob supporting part; 55 - second hob; 6 - film receiving plate. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] Refer to Figures 1-6 , a film feeding mechanism, including a frame main body 1, a film feeding component 2 and a conveying component 3; the film feeding component 2 is installed at the bottom of the frame main body 1, the film feeding component 2 is used for placing a film roll, the film feeding component 2 includes a film winding shaft 21 and a variable speed motor 22 which are rotatably connected; the conveying component 3 is used for conveying the film, the conveying component 3 includes a roller 31, a photoelectric sensor 32 and a braking motor 33 which are installed on the frame main body 1; wherein, the film roll is fixed on the film winding shaft 21, the film winding shaft 21 is rotated by the variable speed motor 22 to convey the film to the roller 31, and the braking motor 33 is controlled by detecting the position of the film through the photoelectric sensor 32.

[0024] The frame main body 1 is used for supporting the film feeding component 2 and the conveying component 3, and rollers are arranged at the bottom of the frame main body 1 as required to facilitate the movement and handling of the film feeding mechanism.

[0025] Through the mutual cooperation of the film feeding component 2 and the conveying component 3, and the reasonable regulation of the variable speed motor 22 and the braking motor 33, the stable conveying of the film is maintained. The problem that the design of the film feeding mechanism is not reasonable enough, resulting in unstable film feeding, film accumulation or tearing, is solved.

[0026] As Figure 2 and Figure 3 shown, in some implementation manners, a driving gear 221 is fixedly connected to one side of the variable speed motor 22, a passive gear 211 meshing with the driving gear 221 is arranged on the side of the film winding shaft 21 close to the variable speed motor 22, the frame main body 1 is provided with a first bearing 11, and the first bearing 11 is located at the bottom of both ends of the film winding shaft 21.

[0027] Optionally, the variable-speed motor 22 is a right-angled hollow electromagnetic braking motor. The rotating shaft of the variable-speed motor 22 passes through the circular hole in the center of the driving gear 221, driving the driving gear 221 to rotate, thereby driving the driven gear 211 to rotate. Finally, the driven gear 211 drives the film winding shaft 21 to rotate and unfolds the film roll.

[0028] The film supply component 2 further includes a protective cover that wraps around the outside of the driving gear 221 and the driven gear 211 to prevent the film from being wound into it.

[0029] As Figure 2 shown, in some embodiments, the film supply component 2 further includes a fixing block 23 mounted on the frame main body 1, and the fixing block 23 is used to fix the film winding shaft 21.

[0030] The fixing block 23 is located at one end of the film winding shaft 21. One end of the fixing block 23 is pivotally connected to the frame main body 1. The fixing block 23 rotates around the pin to cover and fix the film winding shaft 21, and the other end of the fixing block 23 is detachably connected to the frame main body 1.

[0031] As Figure 2 shown, in some embodiments, both the film winding shaft 21 and the roller 31 are provided with limiting rings 212 for restricting the position of the film.

[0032] The inventor found that when the film shuttles between the film winding shaft 21 and the roller 31, the film may be off-center and displaced. By sleeving two limiting rings 212 on each film winding shaft 21 and roller 31 and adjusting the positions of the limiting rings 212 to limit the film within a fixed range, the displacement of the film is avoided.

[0033] In some embodiments, the film winding shaft 21 is an air shaft. The air shaft has a large load-bearing capacity, short inflation and deflation operation time, and is convenient to adjust. When not inflated, the outer diameter of the air shaft is smaller than the inner diameter of the film roll, and it can easily slide into the film roll; after inflation, the air shaft expands and fastens the film roll to ensure the stability and flatness of the film roll on the shaft surface.

[0034] As Figure 6 shown, in some embodiments, the roller 31 includes a fixed roller 311 and a swing roller 312. Both sides of the fixed roller 311 are rotatably connected to the frame main body 1. The braking motor 33 is fixedly connected to one end of the fixed roller 311. The conveying component 3 further includes two swing arms 34, and the swing arms 34 are symmetrically pivotally connected to both sides of the frame main body 1. Both ends of the swing roller 312 are rotatably connected to the swing arms 34.

[0035] There are 2 to 6 fixed rollers 311 and 1 to 5 swing rollers 312. By arranging multiple fixed rollers 311 and swing rollers 312, the acting force of the film is dispersed to multiple contact points, thereby reducing the pressure borne by a single fixed roller 311 or swing roller 312, further alleviating the single-point pressure on the film, and reducing the tension of the film.

[0036] The swing arm 34 has an upper limit position and a lower limit position. The photoelectric sensor 32 monitors the position of the swing arm 34. When the film continuously shuttles without breaking or ending, the film shuttles on the swing roller 312. Due to the tension on the film, the film drives the swing arm 34 to lift upward. When the swing arm 34 touches the upper limit position, the braking motor 33 rotates to drive the film to rotate; when the film breaks or ends, the tension on the film decreases until it disappears, and the swing arm 34 moves downward under the action of gravity. When the swing arm 34 touches the lower limit position downward, the braking motor 33 stops and brakes. This avoids the situation where the film supply mechanism runs idly after the film ends.

[0037] As Figure 5 shown, in some embodiments, the conveying component 3 further includes an adjusting component 35. The adjusting component 35 includes a first guide rod 351, a first guide rail 352, and a second guide rail 353; both ends of the first guide rod 351 are fixedly connected to the frame body 1 and are parallel to each other. Both ends of the first guide rail 352 are respectively connected to the first guide rods 351 on both sides and are parallel to each other. Both ends of the second guide rail 353 are respectively slidably connected to the first guide rails 352 on both sides, and the photoelectric sensor 32 is slidably connected to the second guide rail 353.

[0038] Specifically, the first guide rail 352 can be slidably connected to the first guide rod 351 through a linear bearing, or holes can be opened at different positions of the first guide rod 351 for inserting and fixing the first guide rail 352; the second guide rail 353 is slidably connected to the first guide rail 352 through a linear bearing, and the photoelectric sensor 32 is slidably connected to the second guide rail 353 through a linear bearing. By changing the positions of the photoelectric sensor 32 and the second guide rail 353, the swing arm 34 can be monitored and detected better.

[0039] As Figure 6 shown, in some embodiments, the film supply mechanism further includes a laser component 4. The laser component 4 includes a laser coding machine 41 and a coding plate 42 arranged oppositely. Both ends of the coding plate 42 are fixedly connected to the frame body 1, the frame body 1 is connected with a driving member 43, and the laser coding machine 41 is connected to the top of the driving member 43.

[0040] A smoking pipe is provided on one side of the coding plate 42 for collecting the smoke generated after laser coding of the diaphragm, reducing the emission of harmful gases. A sliding hole is horizontally provided on the main body 1 of the frame, and the driving member 43 is fixed at different sliding positions by bolts; the driving member 43 is specifically a linear cylinder, and the laser coding machine 41 is fixedly connected to the top of the telescopic rod of the linear cylinder. By adjusting the length of the telescopic rod, the height of the laser coding machine 41 is changed. By adjusting the position of the laser coding machine 41, it can be more accurately aligned with the coding plate 42 to achieve a better coding effect.

[0041] As Figure 4 shown, in some embodiments, the film feeding mechanism further includes a cutting member 5. The cutting member 5 includes a first guide member 51, a first hob 52, a second guide member 53, a hob support member 54 and a second hob 55. Both ends of the first guide member 51 are rotatably connected to the main body 1 of the frame, the first hob 52 is fixedly connected to the first guide member 51, both ends of the second guide member 53 are fixedly connected to the main body 1 of the frame, the hob support member 54 is connected to the second guide member 53, and the second hob 55 is rotatably connected to the top of the hob support member 54. The number of the first hob 52 and the second hob 55 is equal and their positions correspond to each other.

[0042] The positions of the first hob 52 and the second hob 55 are both adjustable. After adjusting the positions according to requirements, the film shuttles through the gap between the first hob 52 and the second hob 55, and the film is cut into the required size during the shuttling process. The cutting member 5 has a simple structure and is convenient to adjust.

[0043] As Figure 1 and Figure 4 shown, in some embodiments, the film feeding mechanism further includes a film receiving plate 6 fixedly connected to the main body 1 of the frame at both ends. The film receiving plate 6 is provided with a knife groove.

[0044] When replacing the film roll, the previous film roll and the subsequent film roll are connected with tape on the film receiving plate 6, and the film roll is cut neatly or the foreign objects stuck on the film roll are cut off through the knife groove.

[0045] Specific working mode:

[0046] First, the whole film roll is sleeved on the film winding shaft 21. The film winding shaft 21 is specifically an air shaft. The air shaft expands and fastens the film roll. The variable speed motor 22 drives the driving gear 221 to rotate, thereby driving the driven gear 211 to rotate, and finally driving the film winding shaft 21 to rotate to unwind the film roll.

[0047] Then the unwound film sequentially passes through the coding plate 42, the fixed roller, the swing roller, and the gap between the first hob 52 and the second hob 55.

[0048] When the film passes through the coding plate 42, the laser coding machine 41 codes the film.

[0049] When the film continuously shuttles without disconnection or end, the film shuttles on the swinging roller 312, and the tension on the film drives the swing arm 34 to lift upward. When the swing arm 34 touches the upper limit position, the brake motor 33 rotates to drive the film to rotate; when the film is disconnected or ends, the tension on the film decreases until it disappears, and the swing arm 34 moves downward under the action of gravity. When the swing arm 34 touches the lower limit position downward, the brake motor 33 stops and brakes. This avoids the situation where the film supply mechanism runs idly after the film ends.

[0050] When the film shuttles through the gap between the first hob 52 and the second hob 55, the film is cut into the required size.

[0051] In the description of the embodiments of the present invention, the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0052] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "assembled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film supply mechanism, characterized in that: Including: A frame body (1); A film supply component (2), installed at the bottom of the frame body (1) for placing a film roll, including a film winding shaft (21) and a variable-speed motor (22) that are rotatably connected; A conveying component (3) for conveying the film, including a roller (31), a photoelectric sensor (32) and a braking motor (33) installed on the frame body (1); Wherein, the film roll is fixed to the film winding shaft (21), the film winding shaft (21) is rotated by the variable-speed motor (22) to convey the film to the roller (31), and the braking motor (33) is controlled by detecting the position of the film through the photoelectric sensor (32).

2. The film supply mechanism according to claim 1, wherein: A driving gear (221) is fixedly connected to one side of the variable-speed motor (22), a driven gear (211) meshing with the driving gear (221) is provided on one side of the film winding shaft (21) close to the variable-speed motor (22), the frame body (1) is provided with a first bearing (11), and the first bearing (11) is located at the bottom of both ends of the film winding shaft (21).

3. A film supply mechanism according to claim 1 or 2, characterized in that: The film supply component (2) further includes a fixing block (23) installed on the frame body (1), and the fixing block (23) is used for fixing the film winding shaft (21).

4. The film supply mechanism according to claim 1, characterized in that: Both the film winding shaft (21) and the roller (31) are provided with limiting rings (212), and the limiting rings (212) are used for restricting the position of the film.

5. The film supply mechanism according to claim 1, characterized in that: The film winding shaft (21) is an air-expansion shaft.

6. The film supply mechanism according to claim 1, characterized in that: The roller (31) includes a fixed roller (311) and a swinging roller (312). Both sides of the fixed roller (311) are rotatably connected to the frame body (1), the braking motor (33) is fixedly connected to one end of the fixed roller (311), the conveying component (3) further includes two swing arms (34), the swing arms (34) are symmetrically pinned to both sides of the frame body (1), and both ends of the swinging roller (312) are rotatably connected to the swing arms (34).

7. A film supply mechanism according to claim 1, characterized in that: The conveying component (3) further includes an adjusting assembly (35), and the adjusting assembly (35) includes a first guide rod (351), a first guide rail (352) and a second guide rail (353); both ends of the first guide rod (351) are fixedly connected to the frame body (1) and are parallel to each other, both ends of the first guide rail (352) are respectively connected to the first guide rods (351) on both sides and are parallel to each other, both ends of the second guide rail (353) are respectively slidably connected to the first guide rails (352) on both sides, and the photoelectric sensor (32) is slidably connected to the second guide rail (353).

8. A film supply mechanism according to claim 1, characterized in that: It further includes a laser component (4), the laser component (4) includes a laser coding machine (41) and a coding plate (42) arranged oppositely, both ends of the coding plate (42) are fixedly connected to the frame body (1), the frame body (1) is connected with a driving member (43), and the laser coding machine (41) is connected to the top of the driving member (43).

9. The film supply mechanism according to claim 1, characterized in that: Further included is a cutting member (5), the cutting member (5) including a first guide (51), a first hob (52), a second guide (53), a hob support (54), and a second hob (55). Both ends of the first guide (51) are rotatably connected to the frame body (1), the first hob (52) is fixedly connected to the first guide (51), both ends of the second guide (53) are fixedly connected to the frame body (1), the hob support (54) is connected to the second guide (53), the second hob (55) is rotatably connected to the top end of the hob support (54), and the number of the first hob (52) and the second hob (55) is equal and their positions correspond to each other.

10. The film supply mechanism according to claim 1, characterized in that: Further included is a film receiving plate (6) fixedly connected to the frame body (1) at both ends, and the film receiving plate (6) is provided with knife grooves.

Images