A compact and stable mechanical structure capable of efficiently supplying bottles

Abstract

The present invention discloses a compact and stable mechanical structure for efficient bottle supply, including a bottle bin for storing empty bottles, a bottle receiving bucket for moving empty bottles, and a lifting assembly for adjusting the position of the empty bottle body. A bottle separation assembly for supporting empty bottles is arranged at the lower part of the bottle bin, the bottle receiving bucket slides on the bottle falling slide rail and pushes the bottle separation assembly, the bottle separation assembly is misaligned with the empty bottles in the bottle bin, the empty bottles fall into the bottle receiving bucket, the bottle receiving bucket drives the empty bottles to move into the lifting assembly, and the lifting assembly drives the empty bottles to move up to the set work station. The present invention sets a compact and stable mechanical structure for efficient bottle supply, so that empty bottles arranged at the same height in the bottle bin fall at the same time, and can adjust the horizontally placed empty bottles to be placed vertically to facilitate subsequent filling, so as to meet the use of self-service vending machines that can be sold on site and filled on site, and the present invention has a simple and compact structure, a small empty bottle transfer distance, can effectively increase the effective space of the self-service vending machine, or reduce the volume of the self-service vending machine, and saves material and equipment costs at the same time, which is conducive to the promotion of products.

Description

Technical Field

[0001] The present invention relates to the technical field of self-service vending, and more particularly to a compact and stable mechanical structure capable of efficiently supplying bottles. Background Art

[0002] As people's living standards improve, increasing demands and the pursuit of richer experiences have become a trend. Fast-moving consumer goods such as beer and freshly brewed juice are constantly developing because they cater to this consumption trend. Among them, craft beer has not only greatly improved in taste and experience compared to traditional industrial beer, but also raised people's awareness of beer, thus achieving rapid development and attracting the attention of consumers, investors, etc.

[0003] Due to the consumption mode of craft beer, fresh sales and on-site filling are advocated, rather than pre-filling like the traditional beer industry, which is mainly retail-oriented. On this basis, in order to improve the degree of automation, a new self-service vending machine needs to be designed for craft beer. Although there are self-service vending machines for various products on the market, due to the on-site filling sales mode of craft beer, it is necessary to start with the empty bottle in the self-service vending machine, and there is no mechanical structure for providing empty bottles in the existing self-service vending machines.

[0004] The above shortcomings need to be resolved. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a compact and stable mechanical structure capable of efficiently supplying bottles.

[0006] The technical solution of the present invention is as follows:

[0007] A compact and stable mechanical structure for efficient bottle supply comprises a bottle bin for storing empty bottles, a bottle receiving bucket for moving the empty bottles, and a lifting assembly for adjusting the position of the empty bottle body; a bottle separating assembly for supporting the empty bottles is arranged at the lower part of the bottle bin; the bottle receiving bucket slides on a bottle dropping slide rail and pushes the bottle separating assembly; the bottle separating assembly is misaligned with the empty bottles in the bottle bin; the empty bottles fall into the bottle receiving bucket; the bottle receiving bucket drives the empty bottles to move into the lifting assembly; and the lifting assembly drives the empty bottles to move up to a set working position.

[0008] In the above-mentioned compact and stable mechanical structure capable of efficiently supplying bottles, the vertical distance between the bottom of the bottle bin and the bottle receiving bucket is equal to the height of a horizontally placed empty bottle.

[0009] The above-mentioned compact and stable mechanical structure for efficient bottle supply has a plurality of bottle partitions arranged vertically in the bottle bin, the bottle partitions divide the bottle bin into a plurality of longitudinal storage spaces, and the empty bottles are stacked and distributed in multiple rows along the bottle partitions.

[0010] The above-mentioned compact and stable mechanical structure for efficient bottle supply, the bottle dispensing assembly includes a support rod, a striker plate and a return spring for supporting the empty bottle, the support rod is connected to the striker plate and the return spring respectively, the bottle receiving bucket contacts the striker plate and pushes the striker plate, the bottle receiving bucket pushes the support rod through the striker plate, and the return spring is in a stretched state.

[0011] Furthermore, the support rod comprises an upper support rod arranged at both ends and a lower support rod arranged in the middle, the upper support rod is arranged below both sides of the empty bottle, and the lower support rod is arranged below the middle of the empty bottle.

[0012] Furthermore, a push plate is provided on the bottle receiving bucket, and the push plate is in contact with and connected to the impact plate, and the bottle receiving bucket pushes the support rod to move through the push plate and the impact plate.

[0013] Furthermore, one end of the return spring is fixed to the lower part of the bottle bin, and the other end of the return spring is connected to the support rod.

[0014] In the above-mentioned compact and stable mechanical structure capable of efficiently supplying bottles, the bottle receiving bucket is provided with a plurality of bottle receiving frames, and the number of the bottle receiving frames is the same as the number of the longitudinal storage spaces of the bottle bin.

[0015] The above-mentioned compact and stable mechanical structure for efficient bottle supply, the lifting component includes a bottle lifting bucket, a bottle lifting rack and a bottle lifting screw, the empty bottle slides along the edge of the bottle lifting bucket to the bottle lifting rack, the bottle lifting rack is connected to the bottle lifting screw, and the bottle lifting screw drives the bottle lifting rack to move up and down along the bottle lifting screw under the action of a power source, and the bottle lifting rack drives the empty bottle to move up and down.

[0016] Furthermore, a positioning claw is provided at the bottom of the bottle lifting rack, the empty bottle is arranged at the center of the positioning claw, the positioning claw includes a first roller end and a second roller end, the first roller end and the second roller end are connected by a rocker, the rocker is hinged to the bottle lifting rack, and the second roller end is connected to the bottle lifting rack by a correction spring.

[0017] Furthermore, the number of the positioning claws is three, and the positioning claws are distributed on the bottom edge of the empty bottle in an equilateral triangle.

[0018] Furthermore, the bottle lifting bucket includes an arc bucket and a straight bucket, and the arc bucket and the straight bucket are transitioned by a smooth arc surface. The empty bottle slides from the top of the arc bucket along the edge of the arc bucket into the straight bucket, and the empty bottle changes from a horizontal setting to a vertical setting.

[0019] In the above-mentioned compact and stable mechanical structure capable of efficiently supplying bottles, a displacement sensor is arranged at the lower part of the bottle bin, and a displacement sensing plate is arranged on the bottle receiving bucket.

[0020] The beneficial effect of the present invention according to the above scheme is that the present invention sets up a compact and stable mechanical structure for efficient bottle supply, so that empty bottles arranged at the same height in the bottle bin can fall down at the same time, and can adjust the horizontally placed empty bottles to be placed vertically to facilitate subsequent filling, so as to meet the use of self-service vending machines that can be sold and filled on-site. The present invention has a simple and compact structure, a small empty bottle transfer distance, and can effectively increase the effective space of the self-service vending machine, or reduce the volume of the self-service vending machine, while saving material and equipment costs, which is conducive to product promotion.

[0021] 1. The empty bottles at the same height in the bottle bin fall into the bottle receiving bucket at the same time. Different from the prior art that drops one empty bottle at a time, the present invention drops multiple empty bottles at a time, which can save the time of dropping multiple empty bottles in sequence and the time of moving the bottle receiving bucket, and is more efficient.

[0022] 2. The present invention is provided with a lifting component to change the empty bottle from a horizontal setting state to a vertical setting state. Compared with the mechanical structure in the prior art that maintains a vertical state after the bottle dropping process, more space is saved at the location where the main transfer structures such as filling and empty bottle movement are set, so that the automatic equipment using the present invention has a more compact structure and a smaller volume, the size of the transfer mechanism used is smaller, and the moving path used is shorter, thereby saving the material cost of the transfer mechanism, etc.

[0023] 3. The lifting component is provided with rollers and correction springs. When the empty bottle is rising vertically, it can correct its vertical state along the rollers according to its own weight and the force of the correction spring, so that the empty bottle can be corrected when it rises to the set position, thereby facilitating subsequent filling and other processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a schematic diagram of the structure between the bottle bin and the bottle receiving bucket.

[0027] Figure 3 It is a structural schematic diagram of the lifting component.

[0028] Figure 4 It is a schematic diagram of the structural decomposition of the lifting component.

[0029] Figure 5 for Figure 4 A partial enlarged view of .

[0030] Among them, the reference numerals in the figure are:

[0031] 1. Bottle bin; 11. Bottle partition; 12. Vertical storage space;

[0032] 2. Bottle separation frame; 21. Impact plate; 22. Return spring; 231. Upper support rod; 232. Lower support rod;

[0033] 3. Bottle receiving bucket; 31. Bottle frame; 32. Push plate;

[0034] 4. Bottle drop slide rail;

[0035] 5. Lifting assembly; 51. Bottle lifting bucket; 511. Curved bucket; 512. Straight bucket; 52. Bottle lifting rack; 521. Lifting plate; 53. Bottle lifting screw rod; 54. Positioning claw; 541. First roller end; 542. Second roller end; 543. Rocker; 55. Bottom frame;

[0036] 6. Empty bottle. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] It should be noted that when a component is referred to as being "fixed" or "set" or "connected" to another component, it may be located directly or indirectly on the other component. The orientations or positions indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "bottom", "inside", "outside", etc. are based on the orientations or positions shown in the accompanying drawings and are only for the convenience of description and should not be construed as limitations on the present technical solution. The terms "first", "second", etc. are only used for the convenience of description and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0039] A compact and stable mechanical structure for efficient bottle supply, such as Figure 1As shown, it includes a bottle bin 1 for storing empty bottles 6, a bottle receiving bucket 3 for moving and storing the empty bottles 6, and a lifting assembly 5 for adjusting the position of the empty bottles 6. A bottle separating assembly for supporting the empty bottles 6 is arranged at the lower part of the bottle bin 1. The bottle receiving bucket 3 slides on the bottle falling slide rail 4 and pushes the bottle separating assembly to move, so that the bottle separating assembly and the empty bottles 6 are misaligned. The empty bottles 6 fall into the bottle receiving bucket 3, and the bottle receiving bucket 3 drives the empty bottles 6 to move. The empty bottles 6 fall into the lifting assembly 5 during the movement of the empty bottle 6 bucket, and the lifting assembly 5 drives the empty bottles 6 to move upward until the empty bottles 6 move to the set working position.

[0040] The empty bottles 6 are distributed longitudinally in multiple rows in the bottle bin 1. The bottle bin 1 is provided with multiple vertical bottle partitions 11. The bottle partitions 11 divide the bottle bin 1 into multiple vertical storage spaces 12. The empty bottles 6 are stacked horizontally inside the vertical storage spaces 12. The horizontal placement of the empty bottles 6 can reduce the space for the empty bottles 6 to fall and the height required for the empty bottles 6 to move.

[0041] A bottle separation assembly for supporting the empty bottles 6 is arranged at the bottom of the bottle bin 1, one is to fix the empty bottles 6 inside the bottle bin 1 and prevent them from falling, and the other is to make it more convenient to take out the empty bottles 6.

[0042] like Figure 2 As shown, the main body of the bottle separation assembly is a bottle separation frame 2 which is arranged at the bottom of the bottle bin 1 and is the same size as the bottle bin 1. The bottle separation frame 2 is provided with a plurality of partitions, each of which is the same width as the bottle bin 1, and the number of partitions is the same as the number of vertical storage spaces 12 of the bottle bin 1. A support rod for supporting the empty bottle 6 is arranged in each partition. In one embodiment, the number of support rods is three, namely, an upper support rod 231 arranged at both ends and a lower support rod 232 arranged in the middle. From the longitudinal section, the three support rods are respectively arranged at the edge of the lower arc of the empty bottle 6. The upper support rod 231 is used to limit the horizontal displacement of the empty bottle 6 and to assist in limiting the vertical position of the empty bottle 6. The lower support rod 232 is used to limit the vertical displacement of the empty bottle 6 so that the empty bottle 6 can be stabilized inside the bottle bin 1.

[0043] A striker plate 21 and a return spring 22 are arranged on the outside of the bottle separation frame 2, and a long strip sliding groove is arranged at the bottom of the bottle bin 1. One end of the return spring 22 and the striker plate 21 are arranged on one side of the sliding groove, and the support rod is arranged on the other side of the sliding groove. The bottle separation frame 2 passes through the sliding groove and can slide in the sliding groove. One end of the return spring 22 is fixedly connected to the bottle bin 1, and the other end of the return spring 22 passes through the sliding groove and is fixedly connected to the bottle separation frame 2, and the striker plate 21 is fixedly connected to the bottle separation frame 2. In this case, when the striker plate 21 is pushed, the striker plate 21 can drive the bottle separation frame 2 to move, thereby driving the support rod to move. At the same time, since the position of the bottle bin 1 is fixed, the return spring 22 is stretched, giving the bottle separation frame 2 a reverse force, which promotes the bottle separation frame 2 to return to its original position.

[0044] Although the vertical storage space 12 of the bottle bin 1 corresponds to the partition of the bottle dividing frame 2, and even the number and position of the support rods correspond, once the support rods are driven to move, the supporting position of the support rods shifts. Since the support rods are all fixed in the same bottle dividing frame 2, the movement of the bottle dividing frame 2 is an overall movement, that is, all the support rods at the lower part of the bottle bin 1 will move at the same time, and the supporting position will shift collectively, and the empty bottles 6 set in different vertical storage spaces 12 will fall together due to the loss of supporting force.

[0045] The bottle receiving bucket 3 is used to receive and move the empty bottles 6. Since the empty bottles 6 at the same height fall together, the number of bottle frames 31 of the bottle receiving bucket 3 is consistent with the number of vertical storage spaces 12, and the empty bottles 6 in different vertical storage spaces 12 fall directly into the bottle receiving frames 31 of the bottle receiving bucket 3. In order to prevent the empty bottles 6 from falling into the bottle receiving frames 31 and being damaged, there is only a height of a horizontally placed empty bottle 6 between the bottle receiving bucket 3 and the bottom of the bottle bin 1, and at the same time, it can also ensure that the empty bottles 6 falling into the bottle receiving frames 31 are only empty bottles 6 at the same height, and will not exceed the receiving range of the bottle receiving bucket 3.

[0046] The bottle receiving bucket 3 is arranged on the bottle dropping slide rail 4 and is slidably connected with the bottle dropping slide rail 4. By connecting with the power motor, the bottle receiving bucket 3 is driven to slide forward and backward on the bottle dropping slide rail 4. A push plate 32 is arranged on the bottle receiving bucket 3. When the bottle receiving bucket 3 slides on the bottle dropping slide rail 4, the push plate 32 is in contact with the collision plate 21, and as the bottle receiving bucket 3 moves, the push plate 32 pushes the collision plate 21, thereby moving the scoring bottle frame 2 and driving the support rod to move.

[0047] In order to prevent the bottle receiving bucket 3 from excessive movement, the striker plate 21 is set at a partition farthest from the bottle receiving bucket 3, and a displacement sensor is set in the space corresponding to the same partition, and a displacement sensing plate is set on the bottle receiving bucket 3. After the bottle receiving bucket 3 pushes the striker plate 21, during the period until the displacement sensing plate enters the sensing range of the displacement sensor, the bottle receiving bucket 3 only moves less than the spacing of one partition, that is, the misalignment distance between the support rod and the empty bottle 6 is not greater than the width of a horizontally placed empty bottle 6. In this way, the bottle receiving bucket 3 can not only receive all the empty bottles 6 falling from the same height, but also prevent the bottle receiving bucket 3 from driving the support rod to move excessively beyond the original partition range, so as to ensure that the support rod can continue to support all the empty bottles 6 at the next height.

[0048] After the displacement sensing plate of the bottle receiving bucket 3 touches the displacement sensor, the power motor drives the bottle receiving bucket 3 to move in the reverse direction, and the bottle receiving bucket 3 returns along the original path, and the push plate 32 is separated from the collision plate 21. At this time, since the reset spring 22 is in a stretched state, once the force of the push plate 32 is lost, the reset spring 22 drives the bottle separation frame 2 to return to the original position, so that the support rod is reset and re-supported at the two ends and the middle of the empty bottle 6, and continues to support the remaining empty bottles 6 in the bottle bin 1.

[0049] The bottle receiving bucket 3 returns to its original position along the bottle dropping slide rail 4 driven by the power motor. The bottle receiving bucket 3 is a frame with an empty lower part. Since there is a supporting surface on the frame below the bottle bin 1, the empty bottle 6 falling into the bottle receiving bucket 3 will not fall. However, after the bottle receiving bucket 3 moves away from the supporting surface, the empty bottle 6 falls without support. At this time, the empty bottle 6 is located above the lifting assembly 5, and the empty bottle 6 directly falls into the lifting assembly 5.

[0050] like Figure 3 , Figure 4 , Figure 5 As shown, the lifting assembly 5 includes a bottle lifting bucket 51, a bottle lifting rack 52 and a bottle lifting screw 53. The bottle lifting bucket 51 includes an arc bucket 511 and a straight bucket 512. The arc bucket 511 and the straight bucket 512 are transitioned through a smooth arc surface. When the empty bottle 6 falls into the lifting assembly 5, the empty bottle 6 originally placed horizontally slides along the arc surface of the arc bucket 511 under the action of gravity. Since the arc of the arc bucket 511 below the bottom of the bottle is relatively large when the empty bottle 6 initially falls, the bottom of the bottle is kept at the bottom when the empty bottle 6 falls. The empty bottle 6 falls along the arc bucket 511 until it enters the straight bucket 512. During the falling process of the straight bucket 512, the empty bottle 6 has changed from the original horizontal placement state to the vertical placement state. The empty bottle 6 falls vertically in the straight bucket 512 until it falls on the bottle lifting rack 52 set inside the straight bucket 512. The bottle lifting rack 52 is connected to the bottle lifting screw rod 53. Under the action of the power motor, the bottle lifting rack 52 moves upward along the bottle lifting screw rod 53, thereby driving the empty bottle 6 to move vertically to the set position.

[0051] The bottle lifting rack 52 is a circular support plate, which is used to support the bottom of the empty bottle 6 in a vertical state falling into the straight bucket 512. A bottom frame 55 supporting the bottle lifting rack 52 is provided at the lower part of the straight bucket 512 to reduce the impact of the empty bottle 6 falling vertically into the bottle lifting rack 52. The bottle lifting rack 52 is connected to the bottle lifting screw 53 through the lifting plate 521, and the bottle lifting screw 53 is threadedly connected to the lifting plate 521. The bottle lifting screw 53 is connected to the power motor. During the rotation of the bottle lifting screw 53, the lifting plate 521 is driven to move upward, so that the bottle lifting rack 52 drives the empty bottle 6 to move upward.

[0052] A plurality of positioning claws 54 are arranged at the edge of the bottle raising rack 52. The positioning claw 54 includes a first roller end 541 at the upper end and a second roller end 542 at the lower end. The first roller end 541 and the second roller end 542 are connected via a rocker 543. The center of the rocker 543 is hinged to the bottle raising rack 52, so that the first roller end 541 and the second roller end 542 can swing up and down around the surface where the bottle raising rack 52 is located. The second roller end 542 at the lower end is connected to a correction spring, one end of the correction spring is connected to the second roller end 542, and the other end is fixedly connected to the bottle raising rack 52. The correction spring is always in a stretched state, so that the second roller end 542 at the lower end of the positioning claw 54 is in an open state. According to the lever principle, the first roller end 541 at the upper end of the positioning claw 54 is in a closed state. When the empty bottle 6 falls vertically into the bottle raising rack 52, the impact force of the fall and the deadweight of the empty bottle 6 prop up the first roller end 541 to form a closed environment, causing the first roller end 541 to open and the second roller end 542 to contract, supporting the lower part of the empty bottle 6. At the same time, because the correction spring is always in a stretched state, pressure is applied to the first roller end 541 and the second roller end 542 to clamp the bottom of the empty bottle 6. Since the rollers are in contact with the empty bottle 6, under the action of the correction spring, when the empty bottle 6 is driven to rise by the bottle raising rack 52, the center of gravity and the center axis position of the empty bottle 6 are constantly adjusted by the roller ends, so that the center axis of the empty bottle 6 and the center axis of the bottle raising rack 52 are in the same straight line, and the empty bottle 6 maintains the vertical state to reach the set position, completing the bottle supply process.

[0053] In one embodiment, three positioning claws 54 are disposed on the edge of the bottle lifting rack 52 , and the three positioning claws 54 are distributed in an equilateral triangle.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A compact and stable mechanical structure capable of efficiently supplying bottles, characterized in that: It comprises a bottle bin for storing empty bottles, a bottle receiving bucket for moving the empty bottles, and a lifting assembly for adjusting the position of the empty bottle body. A bottle separating assembly for supporting the empty bottles is arranged at the lower part of the bottle bin. The bottle receiving bucket slides on a bottle-dropping slide rail and pushes the bottle separating assembly. The bottle separating assembly is misaligned with the empty bottles in the bottle bin. The empty bottles fall into the bottle receiving bucket. The bottle receiving bucket drives the empty bottles to move into the lifting assembly. The lifting assembly drives the empty bottles to move upward to a set working position. The vertical distance between the bottom of the bottle bin and the bottle receiving bucket is equal to the height of a horizontally placed empty bottle; The lifting assembly includes a bottle lifting bucket, a bottle lifting rack and a bottle lifting screw rod. The empty bottle slides along the edge of the bottle lifting bucket to the bottle lifting rack. The bottle lifting rack is connected to the bottle lifting screw rod. The bottle lifting screw rod drives the bottle lifting rack to move up and down along the bottle lifting screw rod under the action of a power source, and the bottle lifting rack drives the empty bottle to move up and down. The bottle lifting bucket includes an arc bucket and a straight bucket, and the arc bucket and the straight bucket are transitioned by a smooth arc surface. The empty bottle slides from the top of the arc bucket along the edge of the arc bucket into the straight bucket, and the empty bottle changes from a horizontal setting to a vertical setting.

2. According to claim 1, a compact and stable mechanical structure capable of efficiently supplying bottles, characterized in that: The bottle separating assembly includes a support rod for supporting the empty bottle, a striker plate and a return spring, the support rod is connected to the striker plate and the return spring respectively, the bottle receiving bucket contacts the striker plate and pushes the striker plate, the bottle receiving bucket pushes the support rod via the striker plate, and the return spring is in a stretched state.

3. According to claim 2, a compact and stable mechanical structure capable of efficiently supplying bottles is characterized in that: The support rod comprises an upper support rod arranged at both ends and a lower support rod arranged in the middle, the upper support rod is arranged below both sides of the empty bottle, and the lower support rod is arranged below the middle of the empty bottle.

4. According to claim 2, a compact and stable mechanical structure capable of efficiently supplying bottles is characterized in that: A push plate is arranged on the bottle receiving bucket, and the push plate is in contact with and connected to the collision plate. The bottle receiving bucket pushes the support rod to move through the push plate and the collision plate.

5. According to claim 2, a compact and stable mechanical structure capable of efficiently supplying bottles is characterized in that: One end of the return spring is fixed to the lower part of the bottle bin, and the other end of the return spring is connected to the support rod.

6. A compact and stable mechanical structure for efficient bottle supply according to claim 1, characterized in that: A positioning claw is provided at the bottom of the bottle lifting rack, the empty bottle is arranged at the center of the positioning claw, the positioning claw comprises a first roller end and a second roller end, the first roller end and the second roller end are connected via a rocker, the rocker is hinged to the bottle lifting rack, and the second roller end is connected to the bottle lifting rack via a correction spring.

7. A compact and stable mechanical structure capable of efficiently supplying bottles according to claim 6, characterized in that: The number of the positioning claws is three, and the positioning claws are distributed on the bottom edge of the empty bottle in the form of an equilateral triangle.

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