Cosmetic bottle labeling device
By designing the bottle separation, parallelization and steering mechanisms of the cosmetic bottle labeling device, the problem of low labeling accuracy of cosmetic bottles in automated equipment is solved, and stable alignment of the bottle position and efficient labeling are achieved.
Patent Information
- Application Number
- CN202422935954.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing automated cosmetic bottle labeling equipment has problems such as low accuracy and easy label distortion, which affects the product qualification rate.
Design a cosmetic bottle labeling device, which includes a bottle separation mechanism, a parallel mechanism and a conveying mechanism. The bottle separation mechanism sorts and conveys the bottles to the parallel mechanism for alignment. The steering mechanism adjusts the direction to ensure the stable position of the bottle body and avoid skew.
It improves the accuracy of cosmetic bottle labeling, avoids skewness, and improves the product qualification rate.
Smart Images
Figure CN223371434U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of labeling, in particular to a labeling device for cosmetic bottles. Background Art
[0002] Cosmetics labels contain important information such as the product's brand, name, purpose, ingredients, and instructions for use. Therefore, labeling cosmetic bottles is a crucial step in the production process. Currently, most labels are applied using self-adhesive labels, also known as self-adhesive labels. These labels are made of a composite material made of paper, film, or other specialty materials, with an adhesive on the back and a silicone-coated protective paper as the backing. Simply peel off the backing paper and gently press to attach to the surface of various substrates. The actual labeling process is often performed by automated mechanical equipment or manually operated equipment. Manually operated equipment often suffers from the low efficiency of only labeling individual bottles. However, in automated labeling equipment, improving accuracy and avoiding skewed labeling to prevent low labeling quality and ultimately improve product qualification rates is an urgent issue that needs to be addressed. Utility Model Content
[0003] The purpose of the present invention is to provide a cosmetic bottle labeling device in order to overcome the defects of the above-mentioned prior art. In this solution, a bottle separating mechanism, a parallel mechanism, and a conveying mechanism are provided. The bottle separating mechanism sorts the cosmetic bottles to be labeled and then continues to convey the cosmetic bottles to the conveying mechanism. The parallel mechanism can align the cosmetic bottles during the conveying process on the conveying mechanism, so that the position of the cosmetic bottles conveyed to the labeling mechanism is stable, and skewed labeling due to offset can be avoided.
[0004] The purpose of the utility model can be achieved through the following technical solutions:
[0005] The purpose of the utility model is to provide a cosmetic bottle labeling device, which comprises a labeling mechanism, a bottle separating mechanism, a parallel mechanism, and a conveying mechanism.
[0006] Furthermore, the conveying mechanism is used to convey cosmetic bottles; the bottle separating mechanism is used to sort the cosmetic bottles that need to be labeled and then continue to convey the cosmetic bottles to the conveying mechanism; the parallel mechanism is used to align the cosmetic bottles; and the labeling mechanism is used for labeling.
[0007] Furthermore, the bottle separating mechanism, parallel mechanism, and labeling mechanism are sequentially arranged along the direction in which the conveying mechanism conveys the cosmetic bottles.
[0008] Furthermore, the parallel mechanism includes a guide plate, and the two guide plates are arranged opposite to each other; the guide plates include a smoothly connected arc transition section and a flat section; the distance between the two guide plates is first reduced to the height of the cosmetic bottle body along the direction in which the conveying mechanism conveys the cosmetic bottles and then remains unchanged; the bottle separation mechanism, the parallel mechanism, and the labeling mechanism are arranged in sequence along the direction in which the conveying mechanism conveys the cosmetic bottles
[0009] Furthermore, the bottle separating mechanism includes a feed plate, a bottle separating wheel, a limit plate, and a bracket plate; the feed plate, the bottle separating wheel, and the limit plate are all connected to the bracket plate; the bracket plate is arranged on one side of the conveying mechanism; the bottle separating wheel is circumferentially provided with bottle separating grooves with equal intervals.
[0010] Furthermore, the feed plate and the limit plate are respectively arranged on both sides of the bottle dividing wheel; the feed plate is arranged obliquely; and the limit plate includes an arc bent plate.
[0011] Furthermore, the bottle dispensing tank can accommodate a cosmetic bottle.
[0012] Furthermore, the height of the side of the feed plate close to the bottle separating wheel is lower than the height of the side of the feed plate away from the bottle separating wheel.
[0013] Furthermore, the arc bent plate is arranged opposite to the side of the bottle separating wheel, and is used to cooperate with the bottle separating groove to limit the cosmetic bottles rotated to the side of the limiting plate, thereby preventing the cosmetic bottles from falling prematurely when rotating to the side of the limiting plate.
[0014] Furthermore, the conveying mechanism includes a conveying belt body, a conveying frame and a conveying wheel; the conveying wheel is rotatably connected to the conveying frame, the conveying belt body is connected to the conveying wheel, and the conveying wheel is used to drive the conveying belt body to rotate.
[0015] Furthermore, the cosmetic bottle labeling device also includes a steering mechanism; the steering mechanism includes a steering bracket, a rotating telescopic assembly, and a vacuum suction cup; the steering bracket is connected to the conveying frame; the rotating telescopic assembly is connected to the steering bracket; and the vacuum suction cup is connected to the rotating telescopic assembly.
[0016] Optionally, the steering mechanism is provided between the bottle separating mechanism and the parallel mechanism.
[0017] Optionally, two groups of parallel mechanisms are sequentially arranged between the bottle separating mechanism and the labeling mechanism, and the steering mechanism is arranged between the two groups of parallel mechanisms.
[0018] Furthermore, the vacuum suction cup is externally connected to a vacuum pump.
[0019] Furthermore, the rotary telescopic assembly is used to realize the descent and rotation of the vacuum suction cup, and the vacuum suction cup can suck up the cosmetic bottle with the bottom facing in the opposite direction and turn it to the positive direction through the rotary telescopic assembly; the rotary telescopic assembly includes a rotary motor, a connecting plate, and a telescopic cylinder; the body of the rotary motor is connected to the steering bracket, and the output shaft of the rotary motor is connected to the connecting plate; the body of the telescopic cylinder is connected to the connecting plate, and the output shaft of the telescopic cylinder is connected to the vacuum suction cup.
[0020] Furthermore, the labeling mechanism includes a reel, a guide roller, a peeling plate, a reel, and a labeling bracket; the reel, guide roller, peeling plate, and reel are all connected to the labeling bracket; and the labeling bracket is arranged on one side of the conveying mechanism.
[0021] Furthermore, a roll label is wound on the unwinding wheel, and the label tape released by the roll label is wound around several guide rollers, a peeling plate, and a winding wheel in sequence; the guide roller is used to guide the position of the label between the unwinding wheel and the peeling plate, the peeling plate is used to separate the label in the roll label from the base paper, and the winding wheel is used to roll up the base paper.
[0022] Furthermore, the bottle body and bottle mouth of the cosmetic bottle are both cylindrical; the diameter of the bottle mouth is smaller than the diameter of the bottle body.
[0023] Compared with the prior art, the present invention has the following beneficial effects:
[0024] 1) The cosmetic bottle labeling device provided by the present invention is provided with a bottle sorting mechanism, a parallel mechanism, and a conveying mechanism. The bottle sorting mechanism sorts the cosmetic bottles to be labeled and then conveys them to the conveying mechanism. The parallel mechanism can align the cosmetic bottles during transportation on the conveying mechanism, so that the position of the cosmetic bottles conveyed to the labeling mechanism is stable, avoiding skewed labeling due to offset.
[0025] 2) The cosmetic bottle labeling device provided by the present invention is further provided with a steering mechanism, which can prevent the cosmetic bottles from being placed in the wrong direction on the conveying mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a schematic planar structural diagram of the cosmetic bottle labeling device in Example 1 of the present utility model.
[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the cosmetic bottle labeling device in Example 2 of the present utility model (the labeling mechanism is not shown).
[0028] Figure 3 This is a schematic planar structural diagram of a cosmetic bottle labeling device in Example 2 of the present utility model.
[0029] Figure 4 This is a schematic diagram of the top view of the parallel mechanism (3) of the cosmetic bottle labeling device in Example 1 of the present utility model.
[0030] Figure 5 This is a schematic planar structural diagram of the cosmetic bottle labeling device in Example 3 of the present utility model.
[0031] in:
[0032] 1. Labeling mechanism, 1-1. Unwinding wheel, 1-2. Guide roller, 1-3. Peeling plate, 1-4. Rewinding wheel, 1-5. Labeling bracket, 2. Bottle separating mechanism, 2-1. Feed plate, 2-2. Bottle separating wheel, 2-3. Limiting plate, 2-4. Bracket plate, 3. Parallel mechanism, 3-1. Guide plate, 4. Conveying mechanism, 4-1. Conveying belt, 4-2. Conveying rack, 4-3. Conveying wheel, 5. Steering mechanism, 5-1. Steering bracket, 5-2. Vacuum suction cup, 5-3. Rotating motor, 5-4. Connecting plate, 5-5 Telescopic cylinder. DETAILED DESCRIPTION
[0033] The following is a detailed description of the present invention with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.
[0034] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0035] It should be noted that, in the present invention, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.
[0036] Example 1
[0037] like Figure 1 As shown, this embodiment provides a cosmetic bottle labeling device, which includes a labeling mechanism 1, a bottle separating mechanism 2, a parallel mechanism 3, and a conveying mechanism 4.
[0038] The conveying mechanism 4 is used to convey cosmetic bottles; the bottle separating mechanism 2 is used to sort the cosmetic bottles that need to be labeled and then continue to convey the cosmetic bottles to the conveying mechanism 4; the parallel mechanism 3 is used to align the cosmetic bottles; and the labeling mechanism 1 is used for labeling.
[0039] The bottle separating mechanism 2 , the parallel mechanism 3 , and the labeling mechanism 1 are sequentially arranged along the direction in which the conveying mechanism 4 conveys the cosmetic bottles.
[0040] like Figure 4 As shown, the parallel mechanism 3 includes a guide plate 3-1, which is connected to the conveying frame 4-2. The two guide plates 3-1 are arranged opposite to each other, and the two guide plates 3-1 are respectively connected to the two sides of the conveying frame 4-2. The two guide plates 3-1 can be set to the same shape or different shapes; the guide plate 3-1 includes a smoothly connected arc transition section and a flat section; the distance between the two guide plates 3-1 is first reduced to the height of the cosmetic bottle body along the direction in which the conveying mechanism 4 conveys the cosmetic bottles and then remains unchanged; the bottle separating mechanism 2, the parallel mechanism 3, and the labeling mechanism 1 are arranged in sequence along the direction in which the conveying mechanism 4 conveys the cosmetic bottles.
[0041] The bottle separating mechanism 2 includes a feed plate 2-1, a bottle separating wheel 2-2, a limit plate 2-3, and a bracket plate 2-4; the bottle separating wheel 2-2 is rotatably connected to the bracket plate 2-4, and the feed plate 2-1, the bottle separating wheel 2-2, and the limit plate 2-3 are all connected to the bracket plate 2-4; the bracket plate 2-4 is arranged on one side of the conveying mechanism 4; the bottle separating wheel 2-2 is circumferentially provided with bottle separating grooves 2-2 with equal intervals.
[0042] The feed plate 2-1 and the limit plate 2-3 are respectively arranged on both sides of the bottle dividing wheel 2-2; the feed plate 2-1 is arranged obliquely; and the limit plate 2-3 includes an arc bent plate.
[0043] The bottle dispensing tank 2-2 can accommodate one cosmetic bottle.
[0044] The height of the side of the feed plate 2-1 close to the bottle separating wheel 2-2 is lower than the height of the side of the feed plate 2-1 away from the bottle separating wheel 2-2.
[0045] The arc bent plate is arranged opposite to the side of the bottle dividing wheel 2-2, and is used to cooperate with the bottle dividing groove 2-2 to limit the cosmetic bottles rotated to the side of the limiting plate 2-3, so as to prevent the cosmetic bottles from falling prematurely when rotating to the side of the limiting plate 2-3.
[0046] The conveying mechanism 4 includes a conveying belt body 4-1, a conveying frame 4-2 and a conveying wheel 4-3; the conveying wheel 4-3 is rotatably connected to the conveying frame 4-2, the conveying belt body 4-1 is connected to the conveying wheel 4-3, and the conveying wheel 4-3 is used to drive the conveying belt body 4-1 to rotate.
[0047] The labeling mechanism 1 is a conventional labeling mechanism, and this application does not improve the configuration or operating principle of the labeling mechanism 1. The labeling mechanism 1 includes a reel 1-1, a guide roller 1-2, a peeling plate 1-3, a reel 1-4, and a labeling bracket 1-5. The reel 1-1, guide roller 1-2, peeling plate 1-3, and reel 1-4 are all connected to the labeling bracket 1-5. The labeling bracket 1-5 is located on one side of the conveying mechanism 4.
[0048] A roll label is wound on the unwinding wheel 1-1, and the label tape released from the roll label is wound around several guide rollers 1-2, a peeling plate 1-3, and a reeling wheel 1-4 in sequence; the guide roller 1-2 is used to guide the roll label to a position between the unwinding wheel 1-1 and the peeling plate 1-3, the peeling plate 1-3 is used to separate the label in the roll label from the base paper, and the reeling wheel 1-4 is used to reel up the base paper.
[0049] The bottle body and the bottle mouth of the cosmetic bottle are both cylindrical; the diameter of the bottle mouth is smaller than the diameter of the bottle body.
[0050] The working principle and method of the above-mentioned cosmetic bottle labeling device are as follows:
[0051] The cosmetic bottles roll down from the feed plate 2-1 to the bottle dividing groove 2-2 of the bottle dividing wheel 2-2. As the bottle dividing wheel 2-2 rotates, it rotates to the side of the limit plate 2-3 and is prevented from falling due to the limitation of the limit plate 2-3. When it continues to rotate to the conveyor belt body 4-1 below close to the conveying mechanism 4, it loses the limitation of the limit plate 2-3 and falls on the conveyor belt body 4-1 of the conveying mechanism 4. As the conveyor belt body 4-1 of the conveying mechanism 4 continues to move, it is conveyed to the parallel mechanism 3. Since the distance between the two guide plates 3-1 along the direction of conveying the cosmetic bottles by the conveying mechanism 4 first decreases to the height of the cosmetic bottle body and then remains unchanged, the cosmetic bottles will gradually be aligned and the aligned cosmetic bottles will be sent to the labeling mechanism 1 for labeling.
[0052] In this embodiment, the bottoms of all cosmetic bottles that roll down from the feed plate 2 - 1 face the same direction (positive direction).
[0053] Example 2
[0054] like Figure 2 、 3 As shown, this embodiment, based on the embodiment 1, further includes the following settings:
[0055] The cosmetic bottle labeling device also includes a steering mechanism 5; the steering mechanism 5 includes a steering bracket 5-1, a rotating telescopic assembly, and a vacuum suction cup 5-2; the steering bracket 5-1 is connected to the conveying rack 4-2; the rotating telescopic assembly is connected to the steering bracket 5-1; and the vacuum suction cup 5-2 is connected to the rotating telescopic assembly.
[0056] The steering mechanism 5 is arranged between the bottle separating mechanism 2 and the parallel mechanism 3 .
[0057] The vacuum suction cup 5-2 is externally connected to a vacuum pump.
[0058] The rotating telescopic assembly is used to realize the descent and rotation of the vacuum suction cup 5-2. The vacuum suction cup 5-2 can suck up the cosmetic bottle with the bottom facing in the opposite direction and turn it to the positive direction through the rotating telescopic assembly; the rotating telescopic assembly includes a rotating motor 5-3, a connecting plate 5-4, and a telescopic cylinder 5-5; the body of the rotating motor 5-3 is connected to the steering bracket 5-1, and the output shaft of the rotating motor 5-3 is connected to the connecting plate 5-4; the body of the telescopic cylinder 5-5 is connected to the connecting plate 5-4, and the output shaft of the telescopic cylinder 5-5 is connected to the vacuum suction cup 5-2.
[0059] The direction of the cosmetic bottle can be detected by installing a sensor, or by using a visual system (such as the Turing Smart Eye deep learning visual detection system, etc.). The specific principles and means of detecting the direction of the cosmetic bottle are existing technologies well known to those skilled in the art, and this application does not improve upon them.
[0060] The cosmetic bottle labeling device further includes a controller, which can be a mainstream single-chip microcomputer or a processor of the x86 architecture, ARM architecture, or RISC-V architecture. The controller is wirelessly connected to a sensor, a first driving member (a conventional driving member, such as a motor) that drives the bottle-distributing rotating wheel 2-2, a second driving member (a conventional driving member, such as a motor) that drives the conveying wheel 4-3, and a rotary motor 5-3 and a telescopic cylinder 5-5. When the sensor detects that the cosmetic bottle is placed upside down, a signal is transmitted to the controller, which further controls the first and second driving members to pause, controls the telescopic cylinder 5-5 to descend, and then controls the vacuum suction cup 5-2 to pick up the cosmetic bottle and then rise. The rotary motor 5-3 then drives the cosmetic bottle to turn forward, and then the telescopic cylinder 5-5 descends. After the cosmetic bottle is placed, the telescopic cylinder 5-5 rises, and the first and second driving members continue to drive.
[0061] Example 3
[0062] like Figure 5 As shown, this embodiment provides a cosmetic bottle labeling device. Based on Example 2, the difference of this embodiment is that two groups of parallel mechanisms 3 are sequentially arranged between the bottle separating mechanism 2 and the labeling mechanism 1, and the steering mechanism 5 is arranged between the two groups of parallel mechanisms 3.
[0063] Example 4
[0064] This embodiment provides a cosmetic bottle labeling device. Based on Example 1, the conveyor belt body 4-1 can be set as a conventional conveyor belt or preferably set as two parallel conveyor belts with conveyor rollers evenly connected between them. The conveyor rollers are non-rotatable relative to the conveyor belts, so that the cosmetic bottle is located between two adjacent conveyor rollers to limit the position of the cosmetic bottle.
[0065] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.
Claims
1. A cosmetic bottle labeling device, characterized in that: The cosmetic bottle labeling device comprises a labeling mechanism (1), a bottle separating mechanism (2), a parallel mechanism (3), and a conveying mechanism (4); The conveying mechanism (4) is used to convey cosmetic bottles; The bottle sorting mechanism (2) is used to sort the cosmetic bottles that need to be labeled and then continue to transport the cosmetic bottles to the conveying mechanism (4); The bottle separation mechanism (2), the parallel mechanism (3), and the labeling mechanism (1) are sequentially arranged along the direction in which the conveying mechanism (4) conveys the cosmetic bottles; The parallel mechanism (3) comprises guide plates (3-1), wherein the two guide plates (3-1) are arranged opposite to each other; the distance between the two guide plates (3-1) is first reduced to the height of the cosmetic bottle body along the direction in which the conveying mechanism (4) conveys the cosmetic bottle, and then remains unchanged; The bottle separation mechanism (2), the parallel mechanism (3), and the labeling mechanism (1) are sequentially arranged along the direction in which the conveying mechanism (4) conveys the cosmetic bottles; The bottle separation mechanism (2) comprises a feed plate (2-1), a bottle separation wheel (2-2), a limit plate (2-3), and a support plate (2-4); The feed plate (2-1), the bottle separation wheel (2-2), and the limit plate (2-3) are all connected to the support plate (2-4); The support plate (2-4) is arranged on one side of the conveying mechanism (4); The bottle separating wheel (2-2) is circumferentially provided with bottle separating grooves at equal intervals.
2. A cosmetic bottle labeling device according to claim 1, characterized in that: The feed plate (2-1) and the limit plate (2-3) are respectively arranged on both sides of the bottle separation wheel (2-2); The feed plate (2-1) is arranged tilted; The limiting plate (2-3) comprises an arc bent plate.
3. A cosmetic bottle labeling device according to claim 2, characterized in that: The height of the side of the feed plate (2-1) close to the bottle-separating wheel (2-2) is lower than the height of the side of the feed plate (2-1) far from the bottle-separating wheel (2-2).
4. A cosmetic bottle labeling device according to claim 2, characterized in that: The arc bent plate is arranged opposite to the side of the bottle-distributing wheel (2-2) and is used to cooperate with the bottle-distributing groove to limit the cosmetic bottles rotated to the side of the limiting plate (2-3).
5. The cosmetic bottle labeling device according to claim 1, characterized in that: The conveying mechanism (4) comprises a conveying belt body (4-1), a conveying frame (4-2) and a conveying wheel (4-3); the conveying wheel (4-3) is rotatably connected to the conveying frame (4-2), the conveying belt body (4-1) is connected to the conveying wheel (4-3), and the conveying wheel (4-3) is used to drive the conveying belt body (4-1) to rotate.
6. The cosmetic bottle labeling device according to claim 1, characterized in that: The cosmetic bottle labeling device further includes a steering mechanism (5); The steering mechanism (5) is arranged between the bottle separation mechanism (2) and the parallel mechanism (3); The steering mechanism (5) comprises a steering bracket (5-1), a rotating telescopic component, and a vacuum suction cup (5-2); The steering bracket (5-1) is connected to the conveying bracket (4-2); The rotating and telescopic assembly is connected to the steering bracket (5-1); The vacuum suction cup (5-2) is connected to the rotating telescopic component.
7. A cosmetic bottle labeling device according to claim 6, characterized in that: The rotary telescopic assembly comprises a rotary motor (5-3), a connecting plate (5-4), and a telescopic cylinder (5-5); The body of the rotary motor (5-3) is connected to the steering bracket (5-1), and the output shaft of the rotary motor (5-3) is connected to the connecting plate (5-4); the body of the telescopic cylinder (5-5) is connected to the connecting plate (5-4), and the output shaft of the telescopic cylinder (5-5) is connected to the vacuum suction cup (5-2).
8. The cosmetic bottle labeling device according to claim 1, characterized in that: The labeling mechanism (1) comprises an unwinding wheel (1-1), a guide roller (1-2), a peeling plate (1-3), a rewinding wheel (1-4), and a labeling bracket (1-5); The unwinding wheel (1-1), the guide roller (1-2), the peeling plate (1-3), and the rewinding wheel (1-4) are all connected to the labeling bracket (1-5); The labeling bracket (1-5) is arranged on one side of the conveying mechanism (4).
9. The cosmetic bottle labeling device according to claim 8, characterized in that: A roll label is wound on the unwinding wheel (1-1), and the label tape released from the roll label is wound around a plurality of guide rollers (1-2), a peeling plate (1-3), and a rewinding wheel (1-4) in sequence; The guide roller (1-2) is used to guide the roll label to a position between the unwinding wheel (1-1) and the peeling plate (1-3); the peeling plate (1-3) is used to separate the label in the roll label from the base paper; and the winding wheel (1-4) is used to wind up the base paper.
10. The cosmetic bottle labeling device according to claim 1, characterized in that: The cosmetic bottle is a round bottle, and both the bottle body and the bottle mouth of the cosmetic bottle are cylindrical; the diameter of the bottle mouth is smaller than the diameter of the bottle body.