Film wrapping tensioner

Abstract

The utility model provides a film wrapping tensioner, which belongs to the technical field of food processing equipment and comprises a supporting plate, a rotating shaft, a first connecting rod, a second connecting rod, a pressing piece and a counterweight piece. According to the film wrapping tension device, the supporting plate is fixed to the support, the supporting plate plays a role in supporting the rotating shaft, the rotating shaft, the first connecting rod and the second connecting rod form a lever structure, and the pressing piece and the balance weight piece are located at the two ends of the lever structure respectively. And the weight of one side of the second connecting rod is increased through the balance weight piece, so that the pressing piece can apply acting force to the wrapping film, and then the wrapping film is tightly supported. By the adoption of the wrapping film tensioner, the wrapping film can be automatically tensioned when the wrapping film is loosened, manual operation is not needed, the workload of operators is greatly reduced, and the labor cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of food processing equipment, and more specifically, it relates to a film tensioner. Background Art

[0002] The sauce packets of instant noodles are usually produced by a sauce packaging machine. A bracket is installed on the sauce packaging machine, and a roller is installed on the bracket. A roll of film is installed on the roller. As the film is continuously transported forward, the film on the roller will gradually decrease. In order to keep the transported film taut, the existing method is that workers need to continuously move the position of the roller backward on the bracket. Since the roller is relatively heavy, the labor intensity of workers is relatively large, and the operation is extremely inconvenient. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a film tensioner, aiming to solve the problems that in the existing sauce packaging machine, workers need to move the position of the roller to keep the film taut, resulting in high labor intensity and inconvenient operation.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a film tensioner, including: a support plate, a rotating shaft, a first connecting rod, a second connecting rod, a pressing member, and a counterweight member; the support plate is fixedly installed on the bracket, the rotating shaft is installed on the support plate, the rotating shaft is parallel to the rotating shaft of the roller, the first connecting rod and the second connecting rod are respectively fixedly installed on both sides of the rotating shaft and are perpendicular to the rotating shaft, the pressing member is fixedly installed at one end of the first connecting rod away from the rotating shaft, the pressing member contacts the film and applies a force, and the counterweight member is fixedly installed at one end of the second connecting rod away from the rotating shaft.

[0005] In a possible implementation manner, the pressing member includes a support shaft and a pressure roller; the support shaft is fixedly installed on the first connecting rod and is parallel to the rotating shaft, and the pressure roller is rotatably connected to the support shaft.

[0006] In a possible implementation manner, a rolling bearing is installed between the support shaft and the pressure roller.

[0007] In a possible implementation manner, the counterweight member is cylindrical and is fixedly sleeved on the second connecting rod.

[0008] In a possible implementation manner, the counterweight member is slidably matched with the second connecting rod, and a locking member is installed between the counterweight member and the second connecting rod.

[0009] In a possible implementation manner, the locking member is a screw.

[0010] In a possible implementation, a handle is installed at the outer end of the screw.

[0011] In a possible implementation, a flexible bushing is installed inside the counterweight.

[0012] In a possible implementation, limiting protrusions are evenly arranged on the outer circumference of the flexible bushing, and limiting grooves corresponding to the limiting protrusions are formed on the inner circumferential surface of the counterweight.

[0013] In a possible implementation, a limiting pin is installed on one side of the first connecting rod close to the bracket.

[0014] In the solution shown in the embodiments of the present application, compared with the prior art, for a film wrapping tensioner of the present utility model, the support plate is fixed on the bracket, and the support plate plays a supporting role for the rotating shaft. The rotating shaft, the first connecting rod and the second connecting rod form a lever structure, and the pressing member and the counterweight are respectively located at both ends of the lever structure. By increasing the weight on the side of the second connecting rod through the counterweight, the pressing member can apply a force to the film wrapping, thereby tightening the film wrapping. By using the film wrapping tensioner of the present application, the film wrapping can be automatically tightened when it becomes loose without manual operation, greatly reducing the workload of the operator and saving labor costs. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, 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 utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0016] Figure 1 Schematic perspective view of a film wrapping tensioner provided in Embodiment 1 of the present utility model Figure 1 ;

[0017] Figure 2 For Figure 1 The enlarged view at A in

[0018] Figure 3 Schematic perspective view of a film wrapping tensioner provided in Embodiment 1 of the present utility model Figure 2 ;

[0019] Figure 4 Schematic perspective view of a film wrapping tensioner provided in Embodiment 1 of the present utility model Figure 3 ;

[0020] Figure 5 Cross-sectional view of the counterweight provided in Embodiment 2 of the present utility model.

[0021] In the figure: 1, support plate; 2, rotating shaft; 3, first connecting rod; 301, limit pin; 4, second connecting rod; 5, pressing member; 501, support shaft; 502, pressing roller; 503, rolling bearing; 6, counterweight member; 601, locking member; 602, handle; 603, flexible bushing; 604, limit projection; 605, limit groove; 7, bracket; 8, roller. Specific embodiments

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clear and understandable, the present utility model 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 utility model and are not used to limit the present utility model.

[0023] Please refer to Figures 1 to 3 A film wrapping tensioner provided by the present utility model will now be described. The film wrapping tensioner includes: a support plate 1, a rotating shaft 2, a first connecting rod 3, a second connecting rod 4, a pressing member 5 and a counterweight member 6; the support plate 1 is fixedly installed on the bracket 7, the rotating shaft 2 is installed on the support plate 1, the rotating shaft 2 is parallel to the rotating shaft of the roller 8, the first connecting rod 3 and the second connecting rod 4 are respectively fixedly installed on both sides of the rotating shaft 2 and are perpendicular to the rotating shaft 2, the pressing member 5 is fixedly installed at one end of the first connecting rod 3 away from the rotating shaft 2, the pressing member 5 contacts the film wrapping and applies a force, and the counterweight member 6 is fixedly installed at one end of the second connecting rod 4 away from the rotating shaft 2.

[0024] Compared with the prior art, for the film wrapping tensioner provided in this embodiment, the support plate 1 is fixed on the bracket 7, the support plate 1 plays a supporting role for the rotating shaft 2, and the rotating shaft 2, the first connecting rod 3 and the second connecting rod 4 form a lever structure, and the pressing member 5 and the counterweight member 6 are respectively located at both ends of the lever structure. By increasing the weight on the side of the second connecting rod 4 with the counterweight member 6, the pressing member 5 can apply a force to the film wrapping, thereby tightening the film wrapping. By using the film wrapping tensioner of the present application, the film wrapping can be automatically tightened when the film wrapping becomes loose, without manual operation, greatly reducing the workload of the operator and saving labor costs.

[0025] In some embodiments, please refer to Figure 1 and Figure 3, the pressing member 5 includes a support shaft 501 and a pressing roller 502; the support shaft 501 is fixedly installed on the first connecting rod 3 and is parallel to the rotating shaft 2, and the pressing roller 502 is rotatably connected to the support shaft 501. In this embodiment, one end of the support shaft 501 is welded and fixed to the end of the first connecting rod 3 away from the rotating shaft 2, and the support shaft 501 is perpendicular to the first connecting rod 3 (that is, the support shaft 501 is parallel to the rotating shaft 2). The pressing roller 502 is sleeved on the support shaft 501 and is rotatably connected to the support shaft 501. The pressing roller 502 is in direct contact with the packaging film. Since the pressing roller 502 can rotate on the support shaft 501, the frictional resistance between the pressing roller 502 and the packaging film can be reduced, and thus the heat generated by friction between the packaging film and the pressing roller 502 can be reduced.

[0026] In some embodiments, please refer to Figure 1 and Figure 2 , a rolling bearing 503 is installed between the support shaft 501 and the pressing roller 502. In this embodiment, the rolling bearing 503 can effectively reduce the frictional resistance between the pressing roller 502 and the support shaft 501, thereby reducing the heat generated by friction and wear.

[0027] In some embodiments, please refer to Figure 1 , the counterweight 6 is cylindrical and is sleeved and fixed on the second connecting rod 4. In this embodiment, the counterweight 6 adopts a cylindrical structure. The second connecting rod 4 is a cylindrical rod. The counterweight 6 is sleeved on the second connecting rod 4.

[0028] In some embodiments, please refer to Figure 1 , the counterweight 6 is slidably matched with the second connecting rod 4, and a locking member 601 is installed between the counterweight 6 and the second connecting rod 4. In this embodiment, since the counterweight 6 is slidably matched with the second connecting rod 4, the position of the counterweight 6 on the second connecting rod 4 can be adjusted, and thus the magnitude of the force exerted by the pressing roller 502 on the packaging film can be changed. When the position of the counterweight 6 is adjusted in place, the counterweight 6 is fixed by the locking member 601.

[0029] In some embodiments, please refer to Figure 4 , the locking member 601 is a screw. In this embodiment, a threaded hole matching the screw is formed on the counterweight 6. By tightening the screw, one end of the screw abuts against the second connecting rod 4, and finally the locking of the counterweight 6 is realized, preventing the counterweight 6 from displacing on the second connecting rod 4 and improving the safety factor.

[0030] In some embodiments, please refer to Figure 4 , a handle 602 is installed at the outer end of the screw. In this embodiment, the handle 602 is a plastic part and is fixedly bonded to one end of the screw. By installing the handle 602 on the screw, it is convenient for the operator to drive the screw to rotate, which is more labor-saving.

[0031] In some embodiments, referring to Figure 5 , a flexible bushing 603 is installed inside the counterweight 6. In this embodiment, the flexible bushing 603 is circular. The flexible bushing 603 is coaxially arranged with the counterweight 6. The flexible bushing 603 is made of rubber and has a certain elasticity. The counterweight 6 relies on the self-elasticity of the flexible bushing 603 to remain relatively fixed with the second connecting rod 4. The operator drives the counterweight 6 to move on the second connecting rod 4 by overcoming the frictional resistance between the flexible bushing 603 and the second connecting rod 4.

[0032] In some embodiments, referring to Figure 5 , limiting protrusions 604 are uniformly arranged on the outer circumference of the flexible bushing 603, and limiting grooves 605 corresponding to the limiting protrusions 604 are formed on the inner circumferential surface of the counterweight 6. In this embodiment, the number of the limiting protrusions 604 is multiple and they are uniformly arranged on the outer peripheral surface of the flexible bushing 603. The limiting protrusions 604 and the flexible bushing 603 are integrally processed by an injection molding process. The limiting protrusions 604 are located in the limiting grooves 605, so that the flexible bushing 603 and the counterweight 6 remain relatively fixed.

[0033] In some embodiments, referring to Figure 3 and Figure 4 , a limiting pin 301 is installed on one side of the first connecting rod 3 close to the bracket 7. In this embodiment, the limiting pin 301 is welded and fixed on the side surface of the first connecting rod 3 and is perpendicular to the first connecting rod 3. During the normal transmission of the packaging film, the limiting pin 301 is always located above the bracket 7, while the first connecting rod 3 is located outside the bracket 7. When the packaging film breaks or the packaging film is separated from the pressure roller 502, the pressure roller 502 drops downward under the action of gravity, and the limiting pin 301 contacts the top surface of the bracket 7 accordingly, so as to limit the rotation angle of the packaging film tensiometer and avoid the packaging film tensiometer from colliding with the bracket 7 or the drum 8.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A membrane tensioner, characterized in that: include: A support plate, a rotating shaft, a first connecting rod, a second connecting rod, a pressing piece and a counterweight; the support plate is fixedly mounted on the bracket, the rotating shaft is mounted on the support plate, the rotating shaft is kept parallel to the rotating shaft of the drum, the first connecting rod and the second connecting rod are respectively fixedly mounted on both sides of the rotating shaft and are kept perpendicular to the rotating shaft, the pressing piece is fixedly mounted on an end of the first connecting rod away from the rotating shaft, the pressing piece contacts the envelope and applies a force, and the counterweight is fixedly mounted on an end of the second connecting rod away from the rotating shaft.

2. A membrane tensioner as claimed in claim 1, characterized in that: The pressing member includes a supporting shaft and a pressing roller; the supporting shaft is fixedly mounted on the first connecting rod and is kept parallel to the rotating shaft, and the pressing roller is rotatably connected to the supporting shaft.

3. A membrane tensioner as claimed in claim 2, characterized in that: A rolling bearing is installed between the support shaft and the pressure roller.

4. A membrane tensioner as claimed in claim 1, characterized in that: The counterweight is cylindrical and is sleeved and fixed on the second connecting rod.

5. A membrane tensioner as claimed in claim 4, characterized in that: The counterweight is slidably matched with the second connecting rod, and a locking member is installed between the counterweight and the second connecting rod.

6. A membrane tensioner as claimed in claim 5, characterized in that: The locking member is a screw.

7. A membrane tensioner as claimed in claim 6, characterized in that: A handle is installed at the outer end of the screw rod.

8. A membrane tensioner as claimed in claim 5, characterized in that: A flexible bushing is installed inside the counterweight.

9. A membrane tensioner as claimed in claim 8, characterized in that: The outer circumference of the flexible bushing is evenly arranged with limiting protrusions, and the inner circumference of the counterweight is provided with limiting grooves corresponding to the limiting protrusions.

10. The membrane tensioner according to claim 1, characterized in that: A limiting pin is installed on one side of the first connecting rod close to the bracket.

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