Cap screwing machine torque self-adapting adjusting bottle cap pressing mechanism

Abstract

The utility model relates to cap screwing machine equipment technical field discloses the bottle cap pressure mechanism of cap screwing machine torque self -adaptation regulation, including support base, the support base top fixedly connected with the rack, the rack top fixedly connected with the reversing motor, the reversing motor output fixedly provided with the rotating shaft, the reversing motor bottom surface fixedly connected with the fixed frame, the fixed frame bottom pastes with the rotating frame, the rotating frame inner wall top rotatoryly connected with the gear shaft, the gear shaft surface meshing has the worm, the gear shaft bottom rotatoryly connected with the jaw. In the utility model, through the gear shaft and the meshing of worm, worm, driven arm and jaw are all with rotating frame rotatoryly connected, so that the reversing motor can control the jaw opening and closing to the bottle cap clamping and rotating, realize that the jaw can take different specifications bottle cap and fix the bottle cap on the bottle, improve the work efficiency of cap screwing machine.

Description

Technical Field

[0001] This utility model relates to the technical field of capping machine equipment, and in particular to a capping machine torque adaptive adjustment cap clamping mechanism. Background Technology

[0002] A capping machine is an automated device used to tighten or loosen bottle caps. It is widely used in packaging production lines in the food, pharmaceutical, and daily chemical industries. The cap clamping mechanism of the capping machine is one of its core components. Its main function is to apply downward pressure to the cap during the capping process, so that it fits tightly against the container opening, ensuring the cap's firmness and sealing.

[0003] A search revealed Chinese Patent Publication No. CN204298042U, which discloses a cap-screwing mechanism. The mechanism includes a cap-screwing body, a rotating shaft, and a cap-gripping head. The rotating shaft is rotatable within the cap-screwing body and is fixedly connected to the cap-gripping head. It also includes a magnet mounting base and a disc-shaped rotor. The magnet mounting base is fixed to the cap-screwing body and has an upper magnet or a lower magnet fixed thereon. The upper magnet is located above the disc-shaped rotor, or the lower magnet is located below it. Both the upper and lower magnets include an N-magnetic region and an S-magnetic region, which are alternately arranged. The disc-shaped rotor is fixed to the rotating shaft. The magnets positioned above or below the magnet mounting base, and the adjacent N-magnetic and S-magnetic regions, generate an effective magnetic field on the disc-shaped rotor, causing the cap-gripping head to generate a certain amount of overload torque. The overload torque transition of the cap-gripping head is smooth, ensuring stable operation and enabling high-speed operation.

[0004] However, in practical applications, although the torque transition generated by the magnetic field is smooth, the response speed is slow, and the cap gripper is difficult to adapt to different sizes of bottle caps, resulting in poor flexibility. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a cap clamping mechanism with adaptive torque adjustment for capping machines, aiming to improve the problem that the existing technology is difficult to adapt to different sizes of caps and has poor flexibility.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a capping machine with adaptive torque adjustment for bottle capping, comprising a support base, a frame fixedly connected to the top of the support base, a forward and reverse motor fixedly connected to the top of the frame, a rotating shaft fixedly provided at the output end of the forward and reverse motor, a fixed frame fixedly connected to the bottom surface of the forward and reverse motor, a rotating frame attached to the bottom of the fixed frame, a gear shaft rotatably connected to the top of the inner wall of the rotating frame, a worm gear meshing with the surface of the gear shaft, a gripper rotatably connected to the bottom of the gear shaft, a gripper rotatably connected to the middle surface of the gripper and the inner wall of the rotating frame, and a protective mechanism provided at the bottom of the rotating shaft;

[0007] The above technical solution achieves the capping operation through a mechanical structure, reducing equipment costs while improving the long-term reliability of the equipment. The adaptability of the grippers allows the equipment to be used for the packaging of containers of different sizes.

[0008] As a further description of the above technical solution: the protective mechanism includes a connector, the inner wall surface of the connector is in contact with the bottom surface of the rotating shaft, the surface of the connector is provided with a connecting groove, the bottom of the inner wall of the connector is in contact with a drive shaft, the bottom end of the drive shaft is fixedly connected to both the rotating frame and the worm gear, and two pins are fixedly connected to the surface of the drive shaft.

[0009] The above technical solution improves the reliability of the capping machine by interrupting the transmission between the connecting parts and the rotating shaft through the protective mechanism, and effectively avoids bottle cap deformation or bottle breakage caused by torque overload.

[0010] As a further description of the above technical solution: a pin is fixedly connected to the surface of the rotating shaft, the transmission shaft is slidably connected to the inner wall of the connecting groove, a groove is provided on the top of the connecting piece, and the bottom surface of the pin fits against the inner wall of the groove.

[0011] The above technical solution allows for the application of a wear-resistant coating at the bottom of the groove, which can reduce material wear caused by long-term friction and extend the service life of the mechanism.

[0012] As a further description of the above technical solution: a spring is sleeved on the surface of the drive shaft, the bottom end of the spring is fixedly connected to the inner wall surface of the rotating frame, and the top end of the spring is fixedly connected to the bottom surface of the connector.

[0013] Through the above technical solution, when the resistance to tightening the bottle cap increases, the spring can convert the external force into elastic potential energy for storage, ensuring that the connection between the rotating shaft and the connecting part is cut off when the preset torque threshold is reached.

[0014] As a further description of the above technical solution: the middle part of the gripper is rotatably connected to a driven arm, and the top end of the driven arm is rotatably connected to the bottom of the inner wall of the rotating frame;

[0015] The above technical solution disperses the stress during the capping process by linking the gripper, gear shaft, and driven arm, reducing the wear on the gripper and rotating frame and extending the service life of the equipment.

[0016] As a further description of the above technical solution: a support plate is fixedly connected to the front surface of the frame, and the top surface of the support plate is rotatably connected to the rotating frame;

[0017] The above technical solution provides a certain supporting force for the rotating frame through the support plate, which can play a role in buffering and dispersing.

[0018] As a further description of the above technical solution: a retainer is provided on the inner wall of the frame, and the retainer is used to fix the bottle body;

[0019] Through the above technical solution, the retainer installed on the inner wall of the frame can stabilize the position of the bottle body and ensure that the bottle body and the gripper are coaxial, thereby providing a guarantee for the capping operation of the gripper.

[0020] As a further description of the above technical solution: a gripper is fixedly connected to the front side of the support base, the gripper being used to grip the finished product installed on the surface of the frame; a conveyor is fixedly connected to the top of the support base, the conveyor being used to transport the finished product.

[0021] The above technical solutions reduce manual intervention in the production process by using fixtures, grippers, and conveyors, thereby improving the stability and consistency of product delivery.

[0022] As a further description of the above technical solution, the present invention has the following beneficial effects:

[0023] 1. In this utility model, the rotating shaft is controlled to rotate by a forward and reverse motor. Since the gear shaft meshes with the worm, the worm, the driven arm, and the gripper are all rotatably connected to the rotating frame. This allows the forward and reverse motor to control the opening and closing of the gripper to clamp the bottle cap. At the same time, the rotating frame drives the gripper to rotate together, so that the gripper can clamp bottle caps of different sizes and fix the bottle caps to the bottle body, thereby greatly improving the working efficiency of the capping machine.

[0024] 2. In this utility model, after the bottle cap is tightened, the friction between it and the bottle body increases, causing the first pin in the protective mechanism to leave the top groove of the connector, pushing the connector downward, and the second pin on the surface of the transmission shaft to enter the top of the connecting groove, so that the connector is no longer rotated by the rotating shaft, thereby making the gripper stationary and avoiding damage to the bottle body and bottle cap caused by excessive tightening. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the support base connection for the cap clamping mechanism with adaptive torque adjustment of the capping machine proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the frame connection of the capping machine torque adaptive adjustment bottle cap pressing mechanism proposed in this utility model;

[0027] Figure 3 An exploded view of the capping machine torque adaptive adjustment bottle cap clamping mechanism proposed in this utility model;

[0028] Figure 4 This is a cross-sectional schematic diagram of the capping mechanism with adaptive torque adjustment for the capping machine proposed in this utility model;

[0029] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0030] Legend:

[0031] 1. Support base; 2. Frame; 3. Forward and reverse motor; 4. Rotating shaft; 5. Protective mechanism; 501. Connecting part; 502. Drive shaft; 503. Spring; 504. Connecting groove; 505. Pin one; 506. Pin two; 6. Fixing frame; 7. Rotating frame; 8. Gripper; 9. Gear shaft; 10. Worm gear; 11. Driven arm; 12. Conveyor; 13. Gripper; 14. Support plate. Detailed Implementation

[0032] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] Reference Figures 1-3 An embodiment of this utility model provides a capping machine with adaptive torque adjustment for bottle cap pressing mechanism, including a support base 1, a frame 2 fixedly connected to the top of the support base 1, a forward and reverse motor 3 fixedly connected to the top of the frame 2, a rotating shaft 4 fixedly provided at the output end of the forward and reverse motor 3, a fixed frame 6 fixedly connected to the bottom surface of the forward and reverse motor 3, a rotating frame 7 attached to the bottom of the fixed frame 6, a gear shaft 9 rotatably connected to the top of the inner wall of the rotating frame 7, a worm gear 10 meshing with the surface of the gear shaft 9, a gripper 8 rotatably connected to the bottom of the gear shaft 9, the middle surface of the gripper 8 rotatably connected to the inner wall of the rotating frame 7, and a protective mechanism 5 provided at the bottom of the rotating shaft 4;

[0034] Specifically, the support base 1, as a basic load-bearing component, provides stable support for the frame 2. The forward and reverse motor 3 at the top of the frame 2 transmits power through the rotating shaft 4. The fixed frame 6 at the bottom of the forward and reverse motor 3 is fitted with the rotating frame 7, allowing the rotating frame 7 to rotate with the fixed frame 6 as a reference. The gear shaft 9 meshes with the worm gear 10, so that when the worm gear 10 is driven to rotate, the gear shaft 9 rotates synchronously and drives the gripper 8 at the bottom to open and close, thereby completing the clamping of the bottle cap. Through the coordinated cooperation of the worm gear 10, gear shaft 9, gripper 8 and driven arm 11, the opening and closing angle of the gripper 8 is controllable. Combined with the rotation of the rotating frame 7, it can clamp bottle caps of different diameters and provide uniform torque when tightening, improving the consistency of the packaging operation.

[0035] Reference Figures 4-5 The protective mechanism 5 includes a connector 501. The inner wall surface of the connector 501 is in contact with the bottom surface of the rotating shaft 4. A connecting groove 504 is provided on the surface of the connector 501. A drive shaft 502 is attached to the bottom of the inner wall of the connector 501. The bottom end of the drive shaft 502 is fixedly connected to both the rotating frame 7 and the worm gear 10. A pin 506 is fixedly connected to the surface of the drive shaft 502.

[0036] Specifically, the inner wall of the connector 501 fits against the bottom of the rotating shaft 4, allowing the connector 501 to rotate under the drive of the rotating shaft 4 while adjusting its position axially. The connecting groove 504 is 7-shaped, and in the initial state, the second pin 506 is located at the bottom of the connecting groove 504. When the rotating shaft 4 rotates, the connector 501 rotates synchronously through the cooperation of the first pin 505 and the groove, and drives the transmission shaft 502 to rotate through the second pin 506, thereby driving the worm gear 10 to realize the capping action of the gripper 8. The bottom end of the transmission shaft 502 is fixedly connected to the rotating frame 7 and the worm gear 10, ensuring that the driving force of the forward and reverse motor 3 can be transmitted from the rotating shaft 4 through the connector 501 and the transmission shaft 502 to the worm gear 10.

[0037] Reference Figure 5 A pin 505 is fixedly connected to the surface of the rotating shaft 4. The transmission shaft 502 is slidably connected to the inner wall of the connecting groove 504. A groove is provided on the top of the connecting piece 501, and the bottom surface of the pin 505 is in contact with the inner wall of the groove.

[0038] Specifically, when the capping resistance increases, the contact stress between pin 505 and the inner wall of the groove increases accordingly. When the stress exceeds the preload of spring 503, the mating surface of pin 505 and the groove is subjected to tangential force, forcing connector 501 to move downward. When pin 505 completely disengages from the groove, pin 506 reaches the horizontal section at the top of the connecting groove 504. At this time, the circumferential transmission relationship between connector 501 and rotating shaft 4 is released, and the free rotation of rotating shaft 4 prevents torque from continuing to be transmitted to the bottle cap.

[0039] Reference Figures 3-4 A spring 503 is fitted on the surface of the drive shaft 502. The bottom end of the spring 503 is fixedly connected to the inner wall surface of the rotating frame 7, and the top end of the spring 503 is fixedly connected to the bottom surface of the connector 501.

[0040] Specifically, because the spring 503 is compressed downward by the connector 501 to generate elastic force, the connector 501 tends to move upward along the direction of the rotating shaft 4. When the forward and reverse motor 3 controls the rotating shaft 4 to rotate in the opposite direction so that the pin 505 is coaxial with the top groove of the connector 501, the connector 501 can return to its initial position and reconnect with the rotating shaft 4, thereby realizing the return of the protective mechanism 5.

[0041] Reference Figures 2-3 The middle part of the gripper 8 is rotatably connected to the driven arm 11, and the top of the driven arm 11 is rotatably connected to the bottom of the inner wall of the rotating frame 7.

[0042] Specifically, the gripper 8, gear shaft 9, and driven arm 11 form a parallelogram-like mechanism on the inner wall of the rotating frame 7. When the gear shaft 9 rotates under the drive of the worm gear 10, the gripper 8 and driven arm 11 swing synchronously, ensuring that the gripper 8 always moves in parallel during the opening and closing process. This effectively avoids tilting or deformation of the bottle cap due to uneven force during gripping, and improves the stability and adaptability of gripping bottle caps of different specifications.

[0043] Reference Figures 2-3 A support plate 14 is fixedly connected to the front surface of the frame 2, and the top surface of the support plate 14 is rotatably connected to the rotating frame 7.

[0044] Specifically, when the gripper 8 applies a tightening torque to the bottle cap, the resulting reaction force is transmitted to the support plate 14 through the rotating frame 7. The support plate 14, with its large contact area and rigid structure, evenly distributes the concentrated load to the frame 2, effectively reducing the phenomenon of local stress concentration.

[0045] Reference Figure 1 The inner wall of frame 2 is equipped with a retainer for fixing the bottle body;

[0046] Specifically, the fixture has three retractable limiting blocks inside. When the bottle enters the working area of ​​the fixture, the limiting arms extend synchronously under the drive of the cylinder, and fix the bottle in a ring-like manner from multiple directions, forming a stable three-point support. This can effectively counteract the torque reaction force generated during the capping process, ensuring that the bottle remains stationary during the capping process, and improving the capping quality and sealing performance.

[0047] Reference Figure 1 A gripper 13 is fixedly connected to the front side of the support base 1. The gripper 13 is used to grip the finished product installed on the surface of the frame 2. A conveyor 12 is fixedly connected to the top of the support base 1. The conveyor 12 is used to transport the finished product.

[0048] Specifically, the retainer on the inner wall of the frame 2 works in conjunction with the conveyor 12 and the gripper 13 to form an automated production line. After the retainer positions the bottle, the mechanism can complete the capping operation, while the gripper 13 and the conveyor 12 realize the automatic transfer of finished products.

[0049] Working principle: A retainer is installed at the bottom of the inner wall of the frame 2 to fix the position of the bottle body. After the center of the bottle body is aligned with the center point of the gripper 8 at the top of the frame 2, the rotating shaft 4 is controlled to rotate by the forward and reverse motor 3. Since the rotating shaft 4 can control the rotation of the worm 10 through the protective mechanism 5, and the gear shaft 9 meshes with the worm 10, the worm 10, the driven arm 11 and the gripper 8 are all rotatably connected to the rotating frame 7. This allows the forward and reverse motor 3 to control the opening and closing of the gripper 8 to clamp the bottle cap, while the rotating frame 7 drives the gripper 8 to rotate together. This enables the gripper 8 to clamp bottle caps of different sizes, and at the same time, it can tighten and fix the bottle cap to the bottle body, thereby greatly improving the working efficiency of the capping machine.

[0050] After the bottle cap is tightened, the friction between it and the bottle increases, causing the first pin 505 in the protective mechanism 5 to leave the top groove of the connector 501, pushing the connector 501 downward. The second pin 506 on the surface of the drive shaft 502 enters the top of the connecting groove 504, so that the connector 501 is no longer rotated by the drive shaft 4, thereby keeping the gripper 8 stationary and avoiding damage to the bottle body and bottle cap caused by over-tightening.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A capping machine with adaptive torque adjustment for bottle capping, comprising a support base (1), characterized in that: The support base (1) is fixedly connected to the top of the frame (2), the frame (2) is fixedly connected to the top of the forward and reverse motor (3), the output end of the forward and reverse motor (3) is fixedly provided with a rotating shaft (4), the bottom surface of the forward and reverse motor (3) is fixedly connected to a fixed frame (6), the bottom of the fixed frame (6) is attached to a rotating frame (7), the top of the inner wall of the rotating frame (7) is rotatably connected to a gear shaft (9), the surface of the gear shaft (9) is meshed with a worm gear (10), the bottom of the gear shaft (9) is rotatably connected to a gripper (8), the middle surface of the gripper (8) is rotatably connected to the inner wall of the rotating frame (7), and a protective mechanism (5) is provided at the bottom of the rotating shaft (4).

2. The capping machine torque adaptive adjustment cap clamping mechanism according to claim 1, characterized in that: The protective mechanism (5) includes a connector (501), the inner wall surface of the connector (501) is in contact with the bottom surface of the rotating shaft (4), the surface of the connector (501) is provided with a connecting groove (504), the bottom of the inner wall of the connector (501) is in contact with a drive shaft (502), the bottom end of the drive shaft (502) is fixedly connected to the rotating frame (7) and the worm (10), and the surface of the drive shaft (502) is fixedly connected with a pin (506).

3. The capping machine torque adaptive adjustment cap clamping mechanism according to claim 2, characterized in that: The rotating shaft (4) is fixedly connected to a pin (505), the transmission shaft (502) is slidably connected to the inner wall of the connecting groove (504), the top of the connector (501) is provided with a groove, and the bottom surface of the pin (505) is in contact with the inner wall of the groove.

4. The capping machine torque adaptive adjustment cap clamping mechanism according to claim 2, characterized in that: A spring (503) is fitted on the surface of the drive shaft (502). The bottom end of the spring (503) is fixedly connected to the inner wall surface of the rotating frame (7), and the top end of the spring (503) is fixedly connected to the bottom surface of the connector (501).

5. The capping machine torque adaptive adjustment cap clamping mechanism according to claim 1, characterized in that: The gripper (8) is rotatably connected to a driven arm (11) in the middle, and the top of the driven arm (11) is rotatably connected to the bottom of the inner wall of the rotating frame (7).

6. The capping machine torque adaptive adjustment cap clamping mechanism according to claim 1, characterized in that: A support plate (14) is fixedly connected to the front surface of the frame (2), and the top surface of the support plate (14) is rotatably connected to the rotating frame (7).

7. The capping machine torque adaptive adjustment cap clamping mechanism according to claim 1, characterized in that: The inner wall of the frame (2) is provided with a retainer, which is used to fix the bottle body.

8. The capping machine torque adaptive adjustment cap clamping mechanism according to claim 1, characterized in that: A gripper (13) is fixedly connected to the front side of the support base (1). The gripper (13) is used to grip the finished product installed on the surface of the frame (2). A conveyor (12) is fixedly connected to the top of the support base (1). The conveyor (12) is used to transport the finished product.

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