A new tensioning mechanism

Abstract

The utility model disclosed belongs to the field of material packaging technology, specifically a new type of tensioning mechanism, including a tensioning ring, the tensioning ring is annular and has an annular chamber inside, an annular ring wheel is rotatably arranged inside the annular chamber, the annular wheel is controlled to rotate and lock by a driving component, the annular wheel is concentrically arranged with the tensioning ring, the outer wall of the annular wheel is surrounded by mountain-shaped extrusion blocks at equal intervals; the front side wall of the tensioning ring is surrounded by a sliding mouth at equal intervals. The utility model puts the bag mouth on the outside of multiple expansion plates, drives the driving rod to rotate through the knob, and then rotates the worm through the bevel gear 1 and the bevel gear 2. When the worm rotates, the annular wheel drives all the extrusion blocks to rotate through the worm wheel, so that the extrusion blocks gradually squeeze the expansion plates and springs, thereby adjusting the area of ​​the area surrounded by the multiple springs, that is, it can play a role of evenly expanding the bag mouth, and the material then enters and exits through the hollow core in the middle of the tensioning ring.

Description

Technical Field

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

[0002] When packing some packaging bags, the bag opening needs to be expanded to facilitate the entry and exit of materials. However, the traditional expansion mechanism is not convenient for expanding the bag opening evenly around the bag opening, so it is necessary to develop a new expansion mechanism. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0005] A novel tensioning mechanism, comprising:

[0006] A tensioning ring, the tensioning ring is annular and has an annular chamber inside, an annular wheel is rotatably arranged inside the annular chamber, the rotation and locking of the annular wheel are controlled by a driving assembly, the annular wheel is concentrically arranged with the tensioning ring, and the outer wall of the annular wheel is surrounded by mountain-shaped extrusion blocks at equal intervals;

[0007] A sliding mouth, the front side wall of the tensioning ring is surrounded by sliding mouths at equal intervals, an expansion plate is slidably arranged in each sliding mouth, all of the expansion plates move toward the center of the tensioning ring, the number of the extrusion blocks is consistent with the number of the expansion plates, one end of the expansion plate is located in the inner cavity of the annular chamber, and a spring is arranged between the inner wall of the annular chamber, and the rotating annular wheel drives the extrusion block to gradually squeeze the expansion plate and the spring.

[0008] As a preferred solution of a new type of tensioning mechanism described in the utility model, wherein: the inner rear side wall of the tensioning ring is provided with two fixed plates, the driving assembly includes a worm rotatably arranged between the two fixed plates, and the outer ring of the annular wheel is located behind the extrusion block and is provided with a worm wheel meshing with the worm.

[0009] As a preferred solution of the novel tensioning mechanism described in the utility model, the lead angle of the worm is smaller than the equivalent friction angle between the meshing teeth of the worm wheel.

[0010] As a preferred solution of a new tensioning mechanism described in the utility model, the driving assembly also includes a driving rod that rotates through the bearing sleeve and penetrates the rear side wall of the tensioning ring, and one end of the driving rod located in the annular chamber is provided with a bevel gear 1, the end of the worm is provided with a bevel gear 2 that meshes with the bevel gear 1, and the other end of the driving rod is provided with a knob.

[0011] As a preferred solution of the novel tensioning mechanism described in the utility model, the height difference between the upper and lower edges of the extrusion block is equal to the length of the sliding opening.

[0012] As a preferred solution of the novel tensioning mechanism described in the utility model, the side wall of the expansion support plate is concave to form a sliding groove that is inserted into the inner edge of the sliding opening.

[0013] The beneficial effect of the utility model is that the bag mouth is sleeved on the outside of multiple expansion plates, the driving rod is driven to rotate by the knob, and then the worm is rotated by the bevel gear 1 and the bevel gear 2. When the worm rotates, the annular wheel drives all the extrusion blocks to rotate through the worm wheel, so that the extrusion blocks gradually squeeze the expansion plates and the springs, thereby adjusting the area of ​​the area surrounded by the multiple springs, that is, the bag mouth can be evenly expanded, and the material enters and exits through the hollow core in the middle of the tensioning ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model in the rear view direction;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model in the front view direction;

[0017] Figure 3 This is a schematic diagram of the structure of the interior of the tensioning ring of the utility model in the rearward direction;

[0018] Figure 4 For this utility model Figure 3 Schematic diagram of the structure after the middle ring wheel rotates;

[0019] Figure 5 It is a schematic structural diagram of the internal components of the tensioning ring of the utility model when viewed from the side.

[0020] In the figure: a tensioning ring 100, an annular chamber 110, an annular wheel 120, an extrusion block 130, a slide 200, a support plate 210, a spring 220, a slide groove 230, a fixing plate 300, a worm 310, a worm wheel 320, a driving rod 330, a bevel gear 1 340, a bevel gear 2 350, and a knob 360. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] See also Figure 1-Figure 5 , shows a schematic diagram of the structure of a new type of tensioning mechanism implementation of the utility model, please refer to Figure 1-Figure 5 , a new type of tensioning mechanism is introduced in detail.

[0026] A novel tensioning mechanism includes a tensioning ring 100, which is annular and has an annular chamber 110 inside. An annular ring wheel 120 is rotatably arranged inside the annular chamber 110. The rotation and locking of the annular wheel 120 are controlled by a driving component. The annular wheel 120 is concentrically arranged with the tensioning ring 100. The outer wall of the annular wheel 120 is surrounded by mountain-shaped extrusion blocks 130 at equal intervals.

[0027] The front side wall of the tensioning ring 100 is equidistantly provided with sliding openings 200, and an expansion plate 210 is slidably provided in each sliding opening 200. All the expansion plates 210 move toward the center of the tensioning ring 100. The number of the extrusion blocks 130 is consistent with the number of the expansion plates 210. One end of the expansion plate 210 is located in the inner cavity of the annular chamber 110, and a spring 220 is provided between the expansion plate 210 and the inner wall of the annular chamber 110. The rotating annular wheel 120 drives the extrusion block 130 to gradually squeeze the expansion plate 210 and the spring 220.

[0028] Furthermore, two fixed plates 300 are provided on the inner rear side wall of the tensioning ring 100, and the driving assembly includes a worm 310 rotatably arranged between the two fixed plates 300. The outer ring of the annular wheel 120 is located behind the extrusion block 130 and is provided with a worm wheel 320 meshing with the worm 310. When the worm 310 rotates, the annular wheel 120 drives all the extrusion blocks 130 to rotate through the worm wheel 320.

[0029] Furthermore, the lead angle of the worm 310 is smaller than the equivalent friction angle between the meshing teeth of the worm wheel 320, so that reverse self-locking can be achieved, that is, only the worm 310 can drive the worm wheel 320, but the worm wheel 320 cannot drive the worm 310, so that the adjusted annular wheel 120 is more stable.

[0030] Furthermore, the driving assembly also includes a driving rod 330 that rotates through the bearing sleeve and passes through the rear side wall of the tensioning ring 100. A bevel gear 1 340 is provided at one end of the driving rod 330 located in the annular chamber 110, and a bevel gear 2 350 that meshes with the bevel gear 1 340 is provided at the end of the worm 310. A knob 360 is provided at the other end of the driving rod 330. The knob 360 can be used to conveniently drive the driving rod 330 to rotate, and then the worm 310 is rotated through the bevel gear 1 340 and the bevel gear 2 350.

[0031] Furthermore, the height difference between the upper and lower edges of the extrusion block 130 is equal to the length of the slide 200 , that is, the range of movement of the expansion plate 210 is consistent with the range of movement of the extrusion block 130 .

[0032] Furthermore, the side wall of the expansion plate 210 is concave to form a slide groove 230 that is inserted into the inner edge of the slide opening 200. The slide groove 230 limits the front and rear directions of the expansion plate 210 to ensure that the expansion plate 210 can only slide toward the center of the tensioning ring 100.

[0033] During specific use, the bag mouth is put on the outside of the multiple expansion plates 210, and the driving rod 330 is driven to rotate by the knob 360, and then the worm 310 is rotated by the bevel gear 1 340 and the bevel gear 2 350. When the worm 310 rotates, the annular wheel 120 drives all the extrusion blocks 130 to rotate through the worm gear 320, so that the extrusion blocks 130 gradually squeeze the expansion plates 210 and the springs 220, thereby adjusting the area surrounded by the multiple springs 220, that is, the bag mouth can be evenly expanded, and the material enters and exits through the hollow core in the middle of the tensioning ring 100.

[0034] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A new tensioning mechanism, characterized in that: include: A tensioning ring (100), the tensioning ring (100) is annular and has an annular chamber (110) formed therein, an annular ring wheel (120) is rotatably disposed inside the annular chamber (110), the rotation and locking of the annular wheel (120) are controlled by a driving component, the annular wheel (120) is concentrically disposed with the tensioning ring (100), and mountain-shaped extrusion blocks (130) are uniformly spaced around the outer wall of the annular wheel (120); A sliding opening (200) is arranged around the front side wall of the tensioning ring (100) at equal intervals, and an expansion plate (210) is slidably arranged in each sliding opening (200). All the expansion plates (210) move toward the center of the tensioning ring (100). The number of the extrusion blocks (130) is consistent with the number of the expansion plates (210). One end of the expansion plate (210) is located in the inner cavity of the annular chamber (110), and a spring (220) is arranged between the expansion plate (210) and the inner wall of the annular chamber (110). The rotating annular wheel (120) drives the extrusion block (130) to gradually squeeze the expansion plate (210) and the spring (220).

2. A novel tensioning mechanism according to claim 1, characterized in that: The inner rear side wall of the tension ring (100) is provided with two fixed plates (300), the driving assembly includes a worm (310) rotatably arranged between the two fixed plates (300), and the outer ring of the annular wheel (120) is located behind the extrusion block (130) and is provided with a worm wheel (320) meshing with the worm (310).

3. A novel tensioning mechanism according to claim 2, characterized in that: The lead angle of the worm (310) is smaller than the equivalent friction angle between meshing teeth of the worm wheel (320).

4. A novel tensioning mechanism according to claim 2, characterized in that: The driving assembly also includes a driving rod (330) that rotates through the bearing sleeve and penetrates the rear side wall of the tensioning ring (100); one end of the driving rod (330) located in the annular chamber (110) is provided with a bevel gear 1 (340); the end of the worm (310) is provided with a bevel gear 2 (350) that meshes with the bevel gear 1 (340); and the other end of the driving rod (330) is provided with a knob (360).

5. A novel tensioning mechanism according to claim 1, characterized in that: The height difference between the upper and lower edges of the extrusion block (130) is equal to the length of the sliding opening (200).

6. A novel tensioning mechanism according to claim 1, characterized in that: The side wall of the expansion plate (210) is concavely formed with a sliding groove (230) that is inserted into the inner edge of the sliding opening (200).

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