A sterile anti-rotation knife for PET bottle capping

Abstract

The present invention discloses a sterile anti-rotation knife for PET bottle cap screwing, comprising a special-shaped half ring, an outer shape lug, an alignment step and a stainless steel knife tip, wherein the special-shaped half ring can be used independently or in pairs, and is characterized in that: the outer edge of the special-shaped half ring is provided with three groups of outer shape lugs in sequence, an alignment step is fixed above the outer shape lug, and three groups of stainless steel knife tips are distributed in the axial direction of the special-shaped half ring at the same radius and equally divided angles. The present invention prevents filling materials and possible foreign matter from being retained around the bottle mouth of the PET bottle through smaller installation fit and guide notch, and can efficiently clean and sterilize the environment around the bottle mouth, thereby improving microbial safety, ensuring that the environment around the bottle mouth is stable and sterile, and there will be no splashing of filling materials, water accumulation, or cleaning and sterilization dead corners around the bottle mouth that may cause microbial reproduction.

Description

Technical Field

[0001] The invention relates to the technical field of aseptic filling, in particular to an aseptic anti-rotation knife for screwing caps on PET bottles. Background Art

[0002] The anti-rotation knife is used in the filling of PET bottled juice, dairy products and other fields. When filling PET bottles, it needs to be used in a sterile environment. The structure of the parts related to it is required to have a hygienic structure, that is, the part structure is simple, the outer tube is simple, and there is no dead corner for cleaning, which is easy to clean. After the PET bottle is filled, the pressure ring of the PET bottle is supported when the cap is screwed to seal. When the cap is screwed, the pre-pressure of the cap presses the bottle mouth, and the tip of the anti-rotation knife pierces the plastic of the PET pressure ring to prevent the PET bottle from slipping and rotating when the cap is screwed.

[0003] The anti-rotation knife commonly used at present has the disadvantage of a large installation fitting surface, which makes the installation fitting surface difficult to be cleaned, and the cleaning liquid is not easy to discharge during cleaning, and there are cleaning sanitation dead corners, so it is a non-sterile anti-rotation knife. The sterile anti-rotation knife for PET bottle capping in this case adopts a new structure, with a unique appearance, simple structure, easy cleaning, and a very small installation fitting surface, making it a sterile anti-rotation knife with sterile structural characteristics. Summary of the invention

[0004] In view of the above-mentioned deficiencies existing in the prior art, the object of the present invention is to provide a sterile anti-rotation knife for PET bottle cap screwing, which is used to solve the disadvantages of the existing anti-rotation knife, which has a large installation fitting surface, making the installation fitting surface difficult to clean, and the cleaning liquid is not easy to excrete during cleaning, resulting in the problem of cleaning hygienic dead corners.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: an aseptic anti-rotation knife for PET bottle cap screwing, comprising a special-shaped half ring, an outer lug, an alignment step and a stainless steel knife tip. The special-shaped half ring can be used independently or in pairs, and its characteristics are: three groups of outer lugs are sequentially arranged on the outer edge of the special-shaped half ring, an alignment step is fixed above the outer lug, and three groups of stainless steel knife tips are distributed in the axial direction of the special-shaped half ring according to the same radius and equally divided angles.

[0006] In order to improve the ease of use of a sterile anti-rotation knife for screwing caps on PET bottles, the present invention adopts a solution that a central axis gap is formed between the two special-shaped half rings used in pairs, and the central axis gap is located at the center of two adjacent groups of outer lugs.

[0007] In order to improve the ease of use of a sterile anti-rotation knife for screwing caps on PET bottles, the present invention adopts a solution in which the outer surface of the special-shaped semi-ring is provided with an outer edge surface, and mounting notches are distributed on the outer edge surface, through which the stainless steel knife tip is sequentially embedded and fixed.

[0008] In order to improve the convenience of using a sterile anti-rotation knife for screwing caps on PET bottles, the present invention adopts a solution in which a side surface of the special-shaped half ring is provided with a matching side surface, and the edges of the matching side surface are all provided with rounded corners.

[0009] In order to further improve the ease of use of the sterile anti-rotation knife for PET bottle capping, the present invention adopts the solution that the three groups of stainless steel knife tips are all set to a tetrahedral prism shape, and the three groups of stainless steel knife tips are pointed counterclockwise along the distribution radius of the special-shaped semi-ring, and are set in the opposite direction to the rotation direction of the capping force when the PET bottle is capped.

[0010] In order to further improve the ease of use of the sterile anti-rotation knife for PET bottle capping, the present invention adopts the solution that the three groups of outer shape lugs are provided with the same axial height, and the outer shape lugs are lower than the tetrahedral base height of the stainless steel knife tip, and the symmetry centers of the three groups of outer shape lugs and the distribution centers of the three groups of stainless steel knife tips have the same radial direction.

[0011] In order to further improve the ease of use of the sterile anti-rotation knife for PET bottle capping, the present invention adopts the following solution: a threaded through hole is provided at the center position of each group of outer lugs, and the corresponding three groups of threaded through holes are distributed on the same radial radius of the special-shaped half ring. The outer lug is connected to the external fixing nut through the threaded through hole, and the fixing nut is connected to the machine mounting plate of the docking special-shaped half ring by an embedded thread and passes through the machine mounting plate.

[0012] In order to further improve the ease of use of the sterile anti-rotation knife for PET bottle capping, the present invention adopts a solution as follows: the pairs of external lugs successively form large fan-shaped notches and small fan-shaped notches of the same shape in the direction of the overall ring axis composed of paired special-shaped semi-rings, and the large fan-shaped notches are provided with four groups, and the corresponding small fan-shaped notches are provided with two groups.

[0013] Beneficial effects of the present invention:

[0014] (1) When the aseptic anti-rotation knife for PET bottle capping is used for capping in a sterile environment, it can ensure that the environment around the bottle mouth is stable and sterile, and there will be no splashing of filling materials, water accumulation, or cleaning and sterilization dead corners around the bottle mouth that may cause microbial reproduction.

[0015] (2) When installing and positioning the aseptic anti-rotation knife for PET bottle capping, it is positioned by the outer edge of the alignment step provided on the outer lug, and is positioned by the contact surface of the outer lug and the machine mounting plate, so that it has a very small matching area. Two guide gaps are formed between the fan-shaped gaps between the outer lugs and the machine mounting plate. The smaller installation fit and the guide gap prevent the filling material and possible foreign matter from being retained around the bottle mouth of the PET bottle, and the environmental hygiene around the bottle mouth can be efficiently cleaned and sterilized, thereby improving the microbial safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the planar structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the top view of the structure of the present invention;

[0019] Figure 4 It is a side structural schematic diagram of the present invention.

[0020] In the figure: 1 special-shaped half ring, 2 outer edge surface, 3 matching side surface, 4 outer lug, 5 threaded through hole, 6 alignment step, 7 stainless steel tool tip, 8 center axis gap. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The present invention discloses a sterile anti-rotation knife for screwing a cap on a PET bottle, comprising a special-shaped half ring 1, an outer lug 4, an alignment step 6 and a stainless steel knife tip 7. The special-shaped half ring 1 can be used independently or in pairs. It is processed according to a ring structure during processing. After processing, it is split into two completely identical independent half rings through a center axis. The through hole in the center of the special-shaped half ring 1 has the same diameter as the bottleneck of the PET bottle. When in use, the special-shaped half ring 1 used independently or the through hole of the special-shaped half ring 1 used in pairs clamps the bottleneck of the PET bottle to achieve coaxial positioning of the special-shaped half ring 1 and the bottleneck of the PET bottle. A center axis gap 8 is formed between the two special-shaped half rings 1 used in pairs, and the center axis gap 8 is located at the center of two adjacent groups of outer lugs 4.

[0023] In the present invention, three groups of external lugs 4 are sequentially arranged on the outer edge of the special-shaped half ring 1, and a positioning step 6 is fixed above the external lug 4. Three groups of stainless steel knife tips 7 are distributed in the axial direction of the special-shaped half ring 1 at the same radius and equally divided angles.

[0024] Furthermore, the outer surface of the special-shaped semi-ring 1 is provided with an outer edge surface 2, and the outer edge surface 2 is distributed with installation grooves, and the stainless steel knife tips 7 are embedded and fixed in sequence through the installation grooves; the side surface of the special-shaped semi-ring 1 is provided with a matching side surface 3, and the matching side surface 3 points to an inclined rounded corner in the opposite direction. This rounded corner is used to reduce the space height required for positioning the center of the PET bottleneck, and avoid the inner circular edge surface of the sterile anti-rotation knife inside the special-shaped semi-ring 1. Interference with the PET bottle body.

[0025] Furthermore, the three groups of stainless steel knife tips 7 are all set in the shape of a tetrahedron, and the distribution angle and shape of the stainless steel knife tips 7 can be changed according to the actual capping situation, and the three groups of stainless steel knife tips 7 are directed in a counterclockwise direction along the distribution radius of the special-shaped semi-ring 1, and are set opposite to the rotation direction of the capping force when the PET bottle is capped. The distribution centers of the three groups of stainless steel knife tips 7 and the symmetry centers of the three groups of outer lugs 4 have the same radial direction. When the PET bottle cap is twisted by the stainless steel knife tips 7, under the action of the capping force, the stainless steel knife tips 7 penetrate into the lower surface of the PET bottle pressure ring, which can effectively prevent the PET bottle from sliding with the capping force.

[0026] On the one hand, a threaded through hole 5 is provided at the center position of each group of outer lugs 4, and the corresponding three groups of threaded through holes 5 are distributed on the same radial radius of the special-shaped half ring 1. The outer lug 4 is connected to the external fixing nut through the threaded through hole 5, and the fixing nut is connected to the machine mounting plate of the docking special-shaped half ring 1 with an embedded thread and passes through the machine mounting plate.

[0027] On the other hand, the three groups of outer shape lugs 4 are provided with the same axial height, and the outer shape lugs 4 are lower than the tetrahedral base height of the stainless steel blade tip 7, wherein two of the outer shape lugs 4 sequentially form four groups of identical large fan-shaped notches and two groups of identical small fan-shaped notches in the direction of the overall ring axis formed by the paired special-shaped half rings 1.

[0028] The working principle of the present invention is: when in use, firstly, according to the working mode and installation requirements of the capping and sealing machine, the special-shaped half rings 1 used in pairs act on the linear aseptic capping and sealing machine, and the special-shaped half rings 1 used independently act on the rotary aseptic capping machine. It has a sterile structural feature and can perform aseptic capping of PET bottles. Using it in a sterile filling environment is beneficial to sanitary cleaning and maintains the microbial stability of the PET bottle filling environment.

[0029] The present invention prevents filling materials and possible foreign matter from being retained around the bottle mouth of the PET bottle through smaller installation fit and guide gaps, and can efficiently clean and sterilize the environment around the bottle mouth, thereby improving microbial safety and ensuring that the environment around the bottle mouth is stable and sterile. There will be no splashing of filling materials, water accumulation, or cleaning and sterilization dead corners around the bottle mouth that may cause microbial reproduction.

[0030] The standard parts used in the present invention can all be purchased from the market, and the specific connection methods of each part adopt conventional means such as mature bolts in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sterile anti-rotation knife for PET bottle capping, comprising a special-shaped half ring (1), an outer lug (4), an alignment step (6) and a stainless steel knife tip (7), wherein the special-shaped half ring (1) can be used independently or in pairs, and is characterized in that: The outer edge of the special-shaped half ring (1) is provided with three groups of external lugs (4) in sequence, and a positioning step (6) is fixed above the external lugs (4). In the axial direction of the special-shaped half ring (1), three groups of stainless steel knife tips (7) are distributed at the same radius and equally divided angles. A central axis gap (8) is formed between the two special-shaped half rings (1) used in pairs, and the central axis gap (8) is located at the center of two adjacent groups of outer shape lugs (4); The outer surface of the special-shaped half ring (1) is provided with an outer edge surface (2), and the outer edge surface (2) is provided with mounting notches, through which the stainless steel knife tips (7) are sequentially embedded and fixed; The side surface of the special-shaped half ring (1) is provided with a matching side surface (3), and the edges of the matching side surface (3) are all provided with rounded corners; The three groups of stainless steel knife tips (7) are all set in the shape of a tetrahedron, and the three groups of stainless steel knife tips (7) are directed in a counterclockwise direction along the distribution radius of the special-shaped semi-ring (1), and are arranged in the opposite direction to the direction of the capping force when the cap is screwed on the PET bottle; The symmetry centers of the three groups of outer lugs (4) and the distribution centers of the three groups of stainless steel blade tips (7) have the same radial direction; A threaded through hole (5) is provided at the center of each group of outer lugs (4), and the corresponding three groups of threaded through holes (5) are distributed on the same radial radius of the special-shaped half ring (1). The outer lugs (4) are connected to an external fixing nut through the threaded through holes (5), and the fixing nut is connected to a machine component mounting plate that is connected to the special-shaped half ring (1) through an embedded thread and passes through the machine component mounting plate; The three groups of external lugs (4) are provided with the same axial height, and the external lugs (4) are lower than the height of the tetrahedral base surface of the stainless steel blade tip (7); The two external lugs (4) sequentially form a large fan-shaped notch and a small fan-shaped notch of the same shape in the direction of the overall ring axis formed by the paired special-shaped half rings (1).

2. A sterile anti-rotation knife for PET bottle capping according to claim 1, characterized in that: The large fan-shaped notches are provided in four groups, and the corresponding small fan-shaped notches are provided in two groups.

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