Winding film releasing device

Abstract

The utility model discloses a wrapping film releasing device, and relates to the technical field of wrapping film releasing devices. The anti-loosening device comprises the bottom plate, the bottom plate is provided with the anti-loosening mechanism, the anti-loosening mechanism comprises the two supporting plates fixedly connected to the top of the bottom plate, the compression roller makes contact with the winding film all the time through the anti-loosening mechanism, and therefore the anti-loosening device automatically adapts to the unwinding process of the winding film, stable contact pressure is maintained, and during unwinding, the winding film is prevented from being loosened along with increase and decrease of the winding film. Related parts can be driven to adjust positions by means of stretching and retracting of the spring, it is guaranteed that the pressing roller is attached to the wrapping film all the time, on one hand, the stable contact pressure can prevent the wrapping film from loosening or deviating or shaking in the unwinding process, unwinding smoothness and stability are guaranteed, and the packaging quality is improved; and on the other hand, the problem that the wrapping film is stretched excessively or broken due to uneven pressure can be effectively prevented, the service life of the wrapping film is prolonged, meanwhile, the workload of frequent manual adjustment is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of wrapping film dispensing devices, and in particular relates to a wrapping film dispensing device. Background Technology

[0002] The related technology discloses a PE stretch film feeding device with announcement number CN220011495U. The device drives a reciprocating screw to rotate by a drive motor. The reciprocating screw converts the rotary motion into linear motion, which can drive one of the mounting brackets to move horizontally on the base. This further drives the two mounting brackets to move closer or further apart, thereby adjusting the distance between the two retaining rings. Therefore, rolls of different sizes can be clamped into the corresponding retaining rings for use.

[0003] However, this device is not convenient to apply pressure to the automatic stretch film according to the continuous unwinding of the stretch film during use. As a result, the part of the stretch film wrapped on the roll is prone to loosening during the unwinding process. At the same time, insufficient or unstable pressure may also cause the stretch film to shake and shift, resulting in uneven winding or even wrinkles. Utility Model Content

[0004] The purpose of this utility model is to provide a film unwinding device for stretch film, which solves the problem that it is inconvenient to apply pressure to the automatic stretch film according to the continuous unwinding of the stretch film during use by setting an anti-loosening mechanism.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a film winding and unwinding device, comprising a base plate, wherein the base plate is provided with an anti-loosening mechanism and a cutting mechanism.

[0007] The anti-loosening mechanism includes two support plates fixedly connected to the top of the base plate. Each of the two support plates has a groove on one side close to each other. A slide rod is fixedly connected to the inner wall of each of the two slide grooves. A slider is slidably connected to each of the two slide rods. Each slider is slidably connected to the inner wall of the corresponding slide groove. A spring is wound around each of the two slide rods. A pressure plate is fixedly connected between the two sliders. A through groove is opened on the pressure plate. A pressure roller is rotatably connected to the inner wall of the through groove. The cutting mechanism includes a cutting box fixedly connected to the top of the base plate.

[0008] Furthermore, one end of each of the two springs is fixedly connected to the corresponding slider, and the other end of each of the two springs is fixedly connected to the inner top wall of the corresponding groove.

[0009] Further, the front end and the rear end of the compression roller are fixedly connected with two ratchets, the inner wall of the through slot one is rotationally connected with a pawl, the pawl is unidirectionally engaged with the ratchets, and the pawl and the inner wall of the through slot one are fixedly connected with two elastic ropes.

[0010] Further, the two support plates are fixedly connected with mounting seats on the sides close to each other, and a winding drum is arranged between the two mounting seats.

[0011] Further, the front side of the cutting box is fixedly connected with a motor, the output shaft of the motor is fixedly connected with a threaded rod through a shaft coupling, the rear end of the threaded rod penetrates through the cutting box and is rotationally connected with the cutting box, and an internally-threaded block is threadedly connected on the threaded rod.

[0012] Further, the inner wall of the cutting box is fixedly connected with a second sliding rod, and a second sliding block is slidingly connected on the second sliding rod.

[0013] Further, a connecting plate is fixedly connected between the internally-threaded block and the second sliding block, a motorized push rod is fixedly connected on the top of the connecting plate, and the output shaft of the motorized push rod penetrates through the connecting plate and is slidingly connected with the connecting plate.

[0014] Further, the output shaft of the motorized push rod is fixedly connected with a cutting knife, and a through slot two is formed in the cutting box.

[0015] The utility model has the following beneficial effects:

[0016] 1. By setting the anti-loosening mechanism, when the device is used, the winding film on the winding drum contacts the compression roller, thereby driving the compression roller to move upward, the compression plate moves upward when the compression roller moves upward, the sliding block one moves upward on the first sliding rod when the compression plate moves upward, and the spring is retracted, and as the winding film continues to be unwound, the spring is reset and stretched under the elastic force of itself, thereby driving the sliding block one to move downward, so that the compression plate and the compression roller are driven to move by the sliding block one, and the compression roller is always in contact with the winding film, thereby automatically adapting to the unwinding process of the winding film and maintaining stable contact pressure.

[0017] 2、By setting the cutting mechanism, starting the electric push rod, the electric push rod first drives the cutting knife to move downward to the appropriate position, and then starts the motor, the motor drives the threaded rod to rotate, the threaded rod rotates and drives the inner threaded block to move, the inner threaded block moves and drives the sliding block two to slide on the slide rod two through the connecting plate, the connecting plate moves and drives the electric push rod to move, and then the electric push rod drives the cutting knife to move forward and backward, the cutting mechanism can automatically cut the winding film, thereby greatly improving the cutting efficiency, and can work continuously and uninterruptedly, compared with manual cutting, the processing cycle is greatly shortened, and the large-scale production demand is met, secondly, the cutting precision is much higher than manual operation, the position and size of each cutting are highly consistent, the defective products caused by manual operation error are reduced, the product quality stability is improved, at the same time, automatic cutting avoids the safety risk existing in manual operation, ensures personnel safety, also can reduce labor cost, optimizes production resource allocation, liberates manpower to more valuable work link, helps enterprises to improve comprehensive competitiveness.

[0018] Of course, any product implementing the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 It is the overall structure schematic diagram of the present application;

[0021] Figure 2 It is the structure schematic diagram of the cutting box of the present application;

[0022] Figure 3 It is the structure schematic diagram of the connecting plate of the present application;

[0023] Figure 4 It is the structure schematic diagram of the supporting plate of the present application;

[0024] Figure 5 It is the structure schematic diagram of the chute of the present application;

[0025] Figure 6 It is the structure schematic diagram of the ratchet wheel of the present application.

[0026] In the drawings, the component list represented by each number is as follows:

[0027] 1, bottom plate; 2, anti-loosening mechanism; 3, cutting mechanism; 21, support plate; 22, sliding groove; 23, sliding rod one; 24, sliding block one; 25, spring; 26, pressing plate; 27, compression roller; 28, ratchet; 29, pawl; 210, elastic rope; 211, mounting seat; 212, winding drum; 213, through slot one; 31, cutting box; 32, motor; 33, threaded rod; 34, internally threaded block; 35, sliding rod two; 36, sliding block two; 37, connecting plate; 38, electric push rod; 39, cutting knife; 310, through slot two. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Please refer to Figures 1-6As shown, the utility model is a kind of winding film film releasing device, including bottom plate 1, be provided with anti-loose mechanism 2 and cutting mechanism 3 on bottom plate 1, anti-loose mechanism 2 includes two support plates 21 of fixed connection in the top of bottom plate 1, the side of two support plates 21 mutually close is all set with sliding slot 22, the inner wall of two sliding slots 22 is all fixedly connected with slide bar one 23, two slide bar one 23 are all slidably connected with sliding block one 24, two sliding block one 24 are all slidably connected with the inner wall of corresponding sliding slot 22, two slide bar one 23 are all wound with spring 25, two sliding block one 24 are fixedly connected with pressing plate 26, and the through slot one 213 is set in pressing plate 26, and the inner wall of through slot one 213 is rotatably connected with compression roller 27, and cutting mechanism 3 includes cutting box 31 of fixed connection in the top of bottom plate 1, one end of two spring 25 is all fixedly connected with corresponding sliding block one 24, and the other end of two spring 25 is all fixedly connected with the inner top wall of corresponding sliding slot 22, the front end and rear end of compression roller 27 are all fixedly connected with two ratchets 28, the inner wall of through slot one 213 is rotatably connected with pawl 29, and pawl 29 and ratchet 28 are one-way engagement, and two elastic ropes 210 are fixedly connected between pawl 29 and the inner wall of through slot one 213, the side of two support plates 21 mutually close is all fixedly connected with mounting seat 211, and the winding drum 212 is set between two mounting seats 211, through anti-loose mechanism 2, so that compression roller 27 is always in contact with winding film, to automatically adapt the unwinding process of winding film, maintain stable contact pressure, when unwinding, with the increase of winding film, the telescopic spring 25 can drive related components to adjust position, ensure that compression roller 27 is always attached to winding film, on the one hand, stable contact pressure can avoid winding film to appear slack, deviation or shaking in unwinding process, guarantee the smoothness and stability of unwinding, improve packaging quality;On the other hand, it can effectively prevent winding film from being stretched excessively or broken due to uneven pressure, prolong the service life of winding film, reduce the workload of frequent manual adjustment, and improve work efficiency.

[0030] The front side of the cutting box 31 is fixedly connected with a motor 32, the output shaft of the motor 32 is fixedly connected with a threaded rod 33 through a shaft coupling, the rear end of the threaded rod 33 penetrates through the cutting box 31 and is rotationally connected with the cutting box 31, an internally threaded block 34 is threadedly connected on the threaded rod 33, a second sliding rod 35 is fixedly connected on the inner wall of the cutting box 31, a second sliding block 36 is slidingly connected on the second sliding rod 35, a connecting plate 37 is fixedly connected between the internally threaded block 34 and the second sliding block 36, a motorized push rod 38 is fixedly connected on the top of the connecting plate 37, the output shaft of the motorized push rod 38 penetrates through and is slidingly connected with the connecting plate 37, a cutting knife 39 is fixedly connected with the output shaft of the motorized push rod 38, a through groove 310 is formed in the cutting box 31, the winding film can be automatically cut through the cutting mechanism 3, thereby greatly improving the cutting efficiency, and the continuous uninterrupted work can greatly shorten the processing cycle compared with manual cutting, meet the large-scale production demand, secondly, the cutting precision is much higher than manual operation, can ensure that the position and size of each cutting are highly consistent, reduce the defective products caused by manual operation error, improve the product quality stability, at the same time, the automatic cutting avoids the safety risk existing in manual operation, guarantees the safety of personnel, can also reduce the labor cost, optimizes the production resource allocation, liberates the manpower to work in more valuable work links, helps enterprises to improve the comprehensive competitiveness.

[0031] One specific application of the embodiment is that when the device is used, the winding film on the winding drum 212 is in contact with the compression roller 27, thereby jacking the compression roller 27 to move upward, the compression roller 27 moves upward to drive the pressing plate 26 to move upward, the pressing plate 26 moves upward to drive the first sliding block 24 to move upward on the first sliding rod 23, thereby making the spring 25 contract, and as the film unwinding process of the winding film continues, the winding film on the compression roller 27 gradually decreases, thereby making the supporting force of the winding film on the compression roller 27 also gradually decrease, and then the spring 25 resets and stretches under the elastic action of itself, thereby driving the first sliding block 24 to move downward, the first sliding block 24 moves downward to drive the pressing plate 26 to move downward, thereby driving the compression roller 27 to move downward, so that the compression roller 27 is always in contact with the winding film, the compression roller 27 applies pressure to the winding film, thereby avoiding the situation that the winding film is loose on the compression roller 27 after cutting, and at the same time, as the winding film unwinds, the contact friction between the winding film and the compression roller 27 drives the compression roller 27 to rotate, the pawl 29 is always in contact with the ratchet wheel 28 under the action of the elastic rope 210, the compression roller 27 drives the ratchet wheel 28 to rotate when the compression roller 27 rotates forward during the winding film unwinding process, at this time, the pawl 29 does not limit the ratchet wheel 28, and once the compression roller 27 reverses, the pawl 29 limits the ratchet wheel 28, thereby making the ratchet wheel 28 unable to rotate, and then making the compression roller 27 unable to reverse, thereby avoiding the phenomenon that the winding film is loose and loose due to the reversal of the compression roller 27, and better maintaining the fastening state of the winding film on the winding drum 212.

[0032] The wrapping film needs to pass through the through slot two 310 on the cutting box 31 during the film placing process, when the wrapping film needs to be cut, first start the electric push rod 38, the electric push rod 38 first drives the cutting knife 39 to move downwards to the appropriate position, then start the motor 32, the motor 32 drives the threaded rod 33 to rotate, the threaded rod 33 rotates and drives the inner threaded block 34 to move, the inner threaded block 34 moves and drives the sliding block two 36 to slide on the sliding rod two 35 through the connecting plate 37, the sliding rod two 35 and the sliding block two 36 limit the inner threaded block 34, convert the rotary motion of the inner threaded block 34 into linear motion, and also make the movement process of the connecting plate 37 more stable, the connecting plate 37 moves and drives the electric push rod 38 to move, and then drives the cutting knife 39 to move forward and backward through the electric push rod 38, so as to complete the cutting of the wrapping film.

[0033] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A film unwinding device characterized by comprising: It include the bottom plate (1), be provided with anti -loose mechanism (2) and cutting mechanism (3) on the bottom plate (1); The anti-loose mechanism (2) includes two support plates (21) fixedly connected to the top of the bottom plate (1), each of the two support plates (21) is provided with a sliding groove (22) on the side close to each other, the inner wall of each of the two sliding grooves (22) is fixedly connected with a sliding rod (23), each of the two sliding rods (23) is slidably connected with a sliding block (24), each of the two sliding blocks (24) is slidably connected with the inner wall of the corresponding sliding groove (22), each of the two sliding rods (23) is wound with a spring (25), and the two sliding blocks (24) are fixedly connected with a pressing plate (26), the pressing plate (26) is provided with a through groove (213) penetrating the pressing plate (26), and the inner wall of the through groove (213) is rotatably connected with a pressing roller (27), and the cutting mechanism (3) includes a cutting box (31) fixedly connected to the top of the bottom plate (1).

2. The film unwinding apparatus according to claim 1, wherein One end of each of the two springs (25) is fixedly connected with the corresponding sliding block (24), and the other end of each of the two springs (25) is fixedly connected with the inner top wall of the corresponding sliding groove (22).

3. The film unwinding apparatus according to claim 2, wherein The front end and the rear end of the pressing roller (27) are fixedly connected with two ratchets (28), the inner wall of the through groove (213) is rotatably connected with a pawl (29), the pawl (29) is in one-way engagement with the ratchet (28), and the pawl (29) and the inner wall of the through groove (213) are fixedly connected with two elastic ropes (210).

4. The wrapping film dispensing apparatus according to claim 3, wherein Each of the two support plates (21) is fixedly connected with a mounting seat (211) on the side close to each other, and a winding drum (212) is arranged between the two mounting seats (211).

5. The film unwinding apparatus according to claim 4, wherein The front side of the cutting box (31) is fixedly connected with a motor (32), the output shaft of the motor (32) is fixedly connected with a threaded rod (33) through a shaft coupling, the rear end of the threaded rod (33) penetrates the cutting box (31) and is rotatably connected with the cutting box (31), and an internally threaded block (34) is threadedly connected on the threaded rod (33).

6. The wrapping film dispensing apparatus according to claim 5, wherein The inner wall of the cutting box (31) is fixedly connected with a sliding rod (35), and the sliding rod (35) is slidably connected with a sliding block (36).

7. The film unwinding apparatus according to claim 6, wherein The internally threaded block (34) and the sliding block (36) are fixedly connected with a connecting plate (37), the top of the connecting plate (37) is fixedly connected with an electric push rod (38), and the output shaft of the electric push rod (38) penetrates the connecting plate (37) and is slidably connected with the connecting plate (37).

8. The film unwinding apparatus according to claim 7, wherein The output shaft of the electric push rod (38) is fixedly connected with a cutting knife (39), and the cutting box (31) is provided with a through groove (310) penetrating the cutting box (31).

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