A screw capping mechanism for small-pitch double-ended bottles
By using a pressure sensor and controller to control the small-pitch double bottle capping mechanism, automated and precise tightening is achieved, solving the problems of low capping efficiency and thread damage in existing equipment, and improving the adaptability and quality of capping.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANTONG SNT PACKING MACHINERY
- Filing Date
- 2023-07-04
- Publication Date
- 2026-05-26
AI Technical Summary
Existing double bottle capping equipment is inefficient and difficult to control the tightening force precisely during the capping process, which can easily damage the threads. Furthermore, multiple tests are required for different thread specifications, affecting production efficiency and quality.
The small-pitch double-bottle screw cap mechanism uses a pressure sensor to detect the contact pressure between the cap and the bottle body. The controller controls the speed and direction of the rotary motor to achieve automated and precise tightening. Combined with the synchronous drive of the toothed screw cap head and the fixing clamp, it ensures that the cap and the bottle mouth are in tight contact.
It improves capping efficiency, reduces testing processes, ensures adaptability to caps of different specifications, avoids thread damage, and enhances tightening accuracy and stability.
Smart Images
Figure CN116675165B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of medicine bottle capping equipment technology, and more specifically, to a capping mechanism for small-pitch double bottles. Background Technology
[0002] A double bottle is a medicine bottle with two openings. In the automated production process of this type of bottle, two caps need to be rotated simultaneously onto the two openings of the bottle. In existing capping equipment, the capping device generally uses the teeth inside the toothed capping head to cooperate with the bottle cap, and completes the automatic capping under the action of external rotational force. However, this capping method has the following drawbacks:
[0003] 1. During the rotation of the cap, it is necessary to test the rotation time of the external rotational force multiple times to determine when the cap can be tightened precisely on the opening of the double bottle. The testing process is time-consuming, and different tests need to be performed for different specifications of threaded caps, which greatly affects the capping efficiency of the double bottle.
[0004] 2. During the tightening process of the cap of the double bottle, as the cap is gradually tightened, the tightening pressure of the cap increases. If the external rotational force maintains the same rotational speed as initially, it can easily damage the internal threads of the cap, affecting the subsequent opening of the threads by the user. At the same time, even if many companies know that they need to reduce the rotational speed, it is difficult to control the timing of reducing the rotational force, making it difficult to achieve the desired effect.
[0005] In summary, this invention optimizes the capping mechanism of the double-bottle and improves the capping method. Summary of the Invention
[0006] In order to overcome the above-mentioned defects of the prior art, embodiments of the present invention provide a screw capping mechanism for small-pitch double bottles.
[0007] To achieve the above objectives, the present invention provides a capping mechanism for small-pitch double-bottle bottles. The structure includes a frame, and its innovation lies in that the structure also includes a fixing clamp and two toothed capping heads. The bottom of the frame is provided with a movable groove, and the fixing clamp is flexibly and vertically disposed inside the movable groove. The top of the frame is provided with a vertically movable fixing plate, and the fixing plate is provided with two rotatable rotating rods. The two toothed capping heads are fixed to the bottom of the rotating rods, and the top of the rotating rods is provided with a drive gear. The fixing plate is provided with a drive component that synchronously drives the two drive gears to rotate.
[0008] The drive unit is equipped with a controller, and the fixed plate is equipped with a downward-extending calibration rod. The calibration rod is located between two toothed capping heads. The height of the calibration rod is lower than that of the toothed capping heads. When the toothed capping heads tighten the cap onto the double bottle, the bottom of the calibration rod abuts against the double bottle. The bottom of the calibration rod is equipped with a pressure sensor, which is electrically connected to the controller.
[0009] Furthermore, the aforementioned driving component includes a rotary motor and a connecting rod. The connecting rod is rotatably mounted on a fixed plate. A connecting gear is provided at the bottom of the connecting rod, which meshes between two driving gears. A driven wheel is provided at the top of the connecting rod. A driving wheel is provided at the output end of the rotary motor. A belt connects the driving wheel and the driven wheel.
[0010] Furthermore, the toothed capping head sets the tightening direction of the cap to the positive direction and the loosening direction of the cap to the negative direction. The process of the drive unit driving the toothed capping head to tighten the cap is as follows: the rotary motor first rotates 60° to 90° in the negative direction, and then the rotary motor rotates in the positive direction until the toothed capping head tightens the cap.
[0011] Furthermore, the bottom of the aforementioned calibration rod is equipped with a movable block that can move up and down elastically. A pressure sensor is used to monitor the pressure of the movable block moving upward elastically. The higher the pressure value detected by the pressure sensor, the slower the rotation speed of the rotary motor.
[0012] Furthermore, the aforementioned fixing fixture includes two side plates and a base plate. The two side plates are respectively vertically fixed to both ends of the base plate. The side plates have slots inside, the width of which corresponds to the width of the double bottle. The side plates have sliders on the outside. The movable groove has a sliding groove inside, and the slider is slidably mounted on the sliding groove. The bottom of the base plate has a buffer spring, which is fixed to the bottom of the movable groove.
[0013] The technical effects and advantages of this invention are as follows: This invention uses a pressure sensor to detect the pressure data between the calibration rod and the bottle body of the double bottle, thereby accurately determining whether the cap and the opening of the double bottle have been tightened. This reduces the adjustment process of the tightening data between the cap and the opening of the double bottle, and can directly tighten the cap even for caps of different specifications, thus improving the tightening efficiency between the cap and the opening of the double bottle. Attached Figure Description
[0014] Figure 1 This is a front view of the present invention. Implementation
[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] like Figure 1 In one specific embodiment of the present invention, the structure includes a frame 1, a fixing clamp 2, and two toothed capping heads 3. The bottom of the frame 1 is provided with a movable groove 11. The fixing clamp 2 is flexibly and vertically disposed inside the movable groove 11. The top of the frame 1 is provided with a vertically movable fixing plate 12. The fixing plate 12 is provided with two rotatable rotating rods 13. The two toothed capping heads 3 are fixed to the bottom of the rotating rods 13. The top of the rotating rods 13 is provided with a drive gear 14. The fixing plate 12 is provided with a drive component 4 that synchronously drives the two drive gears 14 to rotate.
[0017] The drive unit 4 is equipped with a controller, and the fixed plate 12 is equipped with a downwardly extending calibration rod 15. The calibration rod 15 is located between two toothed capping heads 3. The height of the calibration rod 15 is lower than that of the toothed capping heads 3. When the toothed capping heads 3 tighten the cap onto the double bottle, the bottom of the calibration rod 15 abuts against the double bottle. The bottom of the calibration rod 15 is equipped with a pressure sensor, which is electrically connected to the controller.
[0018] In this invention, the capping process of the double bottle is as follows: The double bottle is fixed on the fixing clamp 2. Each of the two toothed capping heads 3 contains a cap. The fixing plate 12 is moved downwards, causing the toothed capping heads 3 to move downwards as well. The toothed capping heads 3 press against the double bottle, and the two caps respectively cover the two openings of the double bottle. The fixing clamp 2 moves downwards elastically under the action of the toothed capping heads 3. At this time, the fixing clamp 2 is in an elastically pressed state, and the caps are tightly pressed against the openings of the double bottle. The driving component 4 is opened, and the driving component 4 drives the toothed capping heads 3 to rotate, tightening the caps onto the openings of the double bottle. As the cap and the opening of the double bottle are gradually tightened, the fixing clamp 2, under the elastic recovery action, adaptively moves upward elastically, so that the cap and the opening of the double bottle are always in close contact, thus ensuring that the cap can be gradually tightened to the opening of the double bottle. As the cap and the opening of the double bottle are gradually tightened, the calibration rod 15 gradually approaches the body of the double bottle. When the calibration rod 15 contacts the body of the double bottle, it indicates that the cap and the opening of the double bottle are tightened. The pressure sensor transmits the signal to the controller, and the controller shuts off the drive component 4. The whole process completes the tightening of the double bottle cap.
[0019] In this invention, the pressure data between the calibration rod 15 and the bottle body is detected by a pressure sensor, thereby accurately determining whether the cap and the opening of the bottle have been tightened. This reduces the debugging process of tightening data between the cap and the bottle opening, and can directly screw on caps of different specifications, thus improving the tightening efficiency between the cap and the bottle opening.
[0020] In this invention, as a preferred embodiment, the driving component 4 includes a rotary motor 41 and a connecting rod 42. The connecting rod 42 is rotatably mounted on the fixed plate 12. A connecting gear 5 is provided at the bottom of the connecting rod 42. The connecting gear 5 is meshed between two driving gears 14. A driven wheel 51 is provided at the top of the connecting rod 42. A driving wheel 52 is provided at the output end of the rotary motor 41. A belt 53 is connected between the driving wheel 52 and the driven wheel 51.
[0021] In this invention, the rotation of the toothed capping head 3 is powered by a rotary motor 41, which drives the drive wheel 52 to rotate. Through the action of the belt 53, the driven wheel 51 is driven to rotate, causing the connecting rod 42 to rotate. The two connecting gears 5 of the drive gear 14 are meshed, thereby synchronously driving the two toothed capping heads 3 to rotate synchronously.
[0022] In this invention, as a preferred embodiment, the toothed capping head 3 sets the tightening direction of the cap to the positive direction and the loosening direction of the cap to the negative direction. The driving component 4 drives the toothed capping head 3 to tighten the cap as follows: the rotary motor 41 first rotates 60° to 90° in the negative direction, and then the rotary motor 41 rotates in the positive direction until the toothed capping head 3 tightens the cap.
[0023] In this invention, after the cap covers the opening of the double bottle, the rotary motor 41 is rotated in the opposite direction by 60° to 90°. This allows the cap and the opening of the double bottle to be completely separated, preventing the cap and the opening of the double bottle from getting stuck and affecting the tightening of the cap and the double bottle.
[0024] In this invention, as a preferred embodiment, the bottom of the calibration rod 15 is provided with a movable block 6 that can move up and down elastically. The pressure sensor is used to monitor the pressure of the movable block 6 moving up elastically. The greater the pressure value detected by the pressure sensor, the slower the rotation speed of the rotary motor 41.
[0025] In this invention, as the cap and the opening of the double bottle are gradually tightened, the tightening pressure between the cap and the opening of the double bottle will gradually increase. Correspondingly, the movable block 6 will be tilted upward by the bottle body of the double bottle to slow down the rotation speed of the rotary motor 41. The pressure data detected by the pressure sensor can provide a reference for when the rotation speed of the rotary motor 41 is slowed down, thereby avoiding the cap rotating too fast, which could damage the threads between the cap and the opening of the double bottle and affect the user's ability to open the cap from the double bottle.
[0026] In this invention, as a preferred embodiment, the aforementioned fixing clamp 2 includes two side plates 21 and a base plate 22. The two side plates 21 are respectively vertically fixed to both ends of the base plate 22. The side plates 21 are provided with slots 7 inside, the width of which corresponds to the width of the double bottle. The side plates 21 are provided with sliders 71 on their outer sides. The movable groove 11 is provided with a sliding groove 72 inside, and the sliders 71 are slidably disposed on the sliding groove 72. The bottom of the base plate 22 is provided with a buffer spring 73, which is fixed to the bottom of the movable groove 11.
[0027] In this invention, the double bottle is fixed on the fixing clamp 2 as follows: the double bottle is placed between the two side plates 21 along the slot 7. The two slots 7 limit the position of the double bottle, ensuring that the double bottle can be stably fixed between the two side plates 21. The buffer spring 73 realizes the up and down elastic movement of the fixing clamp 2. Furthermore, regardless of whether the fixing clamp 2 is moved downward elastically or adaptively upward elastically, the slider 71 and the slide groove 72 ensure that the fixing clamp 2 can remain stable when moving up and down.
[0028] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0029] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.
[0030] In conclusion, 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, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A screw capping mechanism for small-pitch double-ended bottles, comprising a frame (1), characterized in that: Its structure also includes a fixing clamp (2) and two toothed capping heads (3). The bottom of the frame (1) is provided with a movable groove (11). The fixing clamp (2) is elastically arranged inside the movable groove (11). The top of the frame (1) is provided with a movable fixing plate (12). The fixing plate (12) is provided with two rotatable rotating rods (13). The two toothed capping heads (3) are fixed at the bottom of the rotating rods (13). The top of the rotating rods (13) is provided with a drive gear (14). The fixing plate (12) is provided with a drive component (4) that synchronously drives the two drive gears (14) to rotate. The drive unit (4) is equipped with a controller, and the fixed plate (12) is equipped with a downwardly extending calibration rod (15). The calibration rod (15) is located between the two toothed capping heads (3). The height of the calibration rod (15) is lower than that of the toothed capping head (3). When the toothed capping head (3) tightens the cap onto the double bottle, the bottom of the calibration rod (15) abuts against the double bottle. The bottom of the calibration rod (15) is equipped with a pressure sensor, and the pressure sensor is electrically connected to the controller.
2. The capping mechanism for a small-pitch double-bottle according to claim 1, characterized in that: The driving component (4) includes a rotary motor (41) and a connecting rod (42). The connecting rod (42) is rotatably mounted on the fixed plate (12). The bottom of the connecting rod (42) is provided with a connecting gear (5), which meshes between two driving gears (14). The top of the connecting rod (42) is provided with a driven wheel (51). The output end of the rotary motor (41) is provided with a driving wheel (52). A belt (53) connects the driving wheel (52) and the driven wheel (51).
3. The capping mechanism for a small-pitch double-bottle according to claim 2, characterized in that: The toothed screw cap head (3) sets the direction of tightening the cap to the positive direction and the direction of loosening the cap to the negative direction. The driving component (4) drives the toothed screw cap head (3) to tighten the cap as follows: The rotary motor (41) first rotates 60° to 90° in the negative direction, and then the rotary motor (41) rotates in the positive direction until the toothed screw cap head (3) tightens the cap.
4. The capping mechanism for a small-pitch double-bottle according to claim 2, characterized in that: The bottom of the calibration rod (15) is provided with a movable block (6) that can move up and down elastically. The pressure sensor is used to monitor the pressure of the movable block (6) moving up elastically. The greater the pressure value detected by the pressure sensor, the slower the rotation speed of the rotary motor (41).
5. The capping mechanism for a small-pitch double-bottle according to claim 1, characterized in that: The fixing clamp (2) includes two side plates (21) and a base plate (22). The two side plates (21) are respectively vertically fixed at both ends of the base plate (22). The side plates (21) are provided with slots (7) inside, and the width of the slots (7) corresponds to the width of the double bottle. The side plates (21) are provided with sliders (71) on the outside. The movable groove (11) is provided with a sliding groove (72) inside. The sliders (71) are slidably disposed on the sliding groove (72). The bottom of the base plate (22) is provided with a buffer spring (73), and the buffer spring (73) is fixed to the bottom of the movable groove (11).