An IBC self-adapting screw cap sealing device

Abstract

The utility model discloses a kind of IBC container self-adapting screw cap sealing device, belong to packaging machinery equipment technical field.The device includes screw cap main body, lifting mechanism, servo motor, planetary reducer, floating connection mechanism and screw cap head mechanism.Screw cap main body realizes up and down movement by lifting cylinder, and the mouth of different height is adapted;Screw cap head is connected with driving shaft through universal joint, and adopts spring buffer structure, realizes up and down floating and inclination self-adaption, effectively solve the problem of screw cap failure caused by barrel height difference and slight deformation.Screw cap head is equipped with tablet and annular spring, realize powerless clamping lid, simple structure, high reliability.The utility model has the advantages of compact structure, strong adaptability, high screw cap precision, no damage cover and the like.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery and equipment technology, specifically to an IBC container adaptive screw cap sealing device. Background Technology

[0002] IBC containers are widely used for liquid packaging in industries such as chemicals and food, and their capping operation is usually completed by capping machines. Existing capping machines have complex structures and large sizes, are prone to scratching the caps during the capping process, and have non-adjustable capping torque, resulting in poor adaptability and high failure rates. In particular, when there is a height difference or slight deformation at the container opening, traditional capping machines struggle to achieve a reliable seal.

[0003] To address the problems existing in the current technology, an adaptive capping and sealing device for IBC containers is proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides an adaptive screw cap sealing device for IBC containers, which overcomes the shortcomings of the prior art and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides an IBC container adaptive capping and sealing device, including a capping body, a lifting drive component, a rotation power component, a main floating mechanism, a power transmission and buffer mechanism, and a capping execution component.

[0006] The screw cap body includes a bottom fixing plate and a top servo motor fixing plate. The bottom fixing plate and the top servo motor fixing plate are fixedly connected by multiple screws to form a rigid frame.

[0007] The lifting drive component includes a lifting cylinder mounted on the bottom fixed plate, which is used to drive the entire cap body to move up and down.

[0008] The rotating power component includes a servo motor and a planetary reducer mounted on the top servo motor mounting plate. The servo motor is connected to the input end of the planetary reducer, which is fixed on the top servo motor mounting plate and has a bushing connected to its output end.

[0009] The main floating mechanism includes a connecting cylinder, a pressure plate, a spring and a lower spring pressure ring. The connecting cylinder is disposed in the bottom fixed plate, the pressure plate is pressed on the top of the connecting cylinder, and the spring is disposed on the lead screw and applies pressure to the pressure plate through the lower spring pressure ring, so that the connecting cylinder and its supporting components have the ability to float vertically and tilt adaptively.

[0010] The power transmission and buffer mechanism includes a bushing, a shaft, a universal joint, a capping drive shaft, and a capping floating shaft connected in sequence; the shaft is slidably sleeved in the bushing, and a second spring is provided between the shaft and the bushing. The upper end of the second spring is limited by an upper spring pressure ring, and the lower end is limited by a spring retaining ring, thus forming a buffer structure.

[0011] The capping actuator includes a capping head connected to the capping floating shaft. The capping head has multiple pressure plates arranged circumferentially inside, and the multiple pressure plates are clamped by annular springs to achieve adaptive clamping of the cap.

[0012] The bushing is axially fixed by a round nut.

[0013] The lead screw is equipped with a hexagonal nut for adjusting the initial height of the pressure plate.

[0014] As a preferred technical solution of this utility model, the shaft and the bushing can slide relative to each other, and a second spring is provided to provide buffering. The upper end of the second spring is limited by an upper spring pressure ring, and the lower end is limited by a spring retaining ring.

[0015] As a preferred technical solution of this utility model, the piston rod of the lifting cylinder is provided with a limiting nut for precisely adjusting and positioning the lowering height of the capping mechanism to adapt to the height difference of different barrel openings.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. Through the floating mechanism consisting of the connecting cylinder and the spring, and the arc-shaped connection between the capping head and the capping floating shaft and the transmission of the universal joint, the device can automatically compensate for the height difference and slight tilting and deformation of the IBC barrel opening, which greatly improves the success rate of capping.

[0017] 2. The capping head uses a purely mechanical clamping plate and ring spring structure to achieve clamping, which eliminates the need for an additional power source, simplifies the structure, reduces costs and failure rates, and avoids damaging the cap.

[0018] 3. Powered by a servo motor, the torque of the cap can be precisely controlled, ensuring that it is tightened properly while preventing damage to the cap or threads due to excessive torque.

[0019] 4. The spring-loaded double buffer design between the shaft and the bushing can effectively prevent the capping head from impacting the barrel opening and causing deformation when it descends. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 For the present utility model Figure 1 Schematic diagram of the cross-sectional structure at point BB.

[0021] In the diagram: 1. Bottom fixing plate; 2. Top servo motor fixing plate; 3. Shaft; 4. Bushing; 5. Lead screw; 6. Spring retaining ring; 7. Upper spring pressure ring; 8. Lower spring pressure ring; 9. Pressure plate; 10. Capping head; 11. Capping floating shaft; 12. Cover plate; 13. Capping drive shaft; 14. Connecting cylinder; 15. Round nut; 16. Hex nut; 17. Universal joint; 18. Spring 1; 19. Spring 2; 20. Planetary reducer; 21. Lifting cylinder; 22. Ring spring; 23. Deep groove ball bearing; 24. Servo motor; 25. Pressure plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-2 An adaptive capping device for IBC containers includes a bottom fixing plate 1 and a top servo motor fixing plate 2, which are rigidly connected by four lead screws 5 to form the support frame of the entire device. The lead screws 5 are equipped with hexagonal nuts 16.

[0024] The lifting cylinder 21 is bolted to the side of the bottom fixing plate 1, forming a lifting drive component used to control the lifting action of the entire capping mechanism. An adjustable limit nut (not separately labeled in the figure) is provided on the lifting cylinder 21 to precisely control the descent height of the capping head 10 to accommodate the height difference of the opening of different IBC ton containers.

[0025] The power system is mounted on the top servo motor mounting plate 2, forming a rotating power component, consisting of a servo motor 24 connected to a planetary reducer 20. The servo motor 24 provides precise rotational power and torque control, while the planetary reducer 20 is used to increase the output torque.

[0026] The power transmission path is as follows: the output end of the planetary reducer 20 is connected to the bushing 4. The bushing 4 is axially fixed by the round nut 15, and the shaft 3 is fitted inside it. The shaft 3 can slide up and down within the bushing 4 to a limited extent. On the outside of the bushing 4, a buffer system is formed by the upper spring pressure ring 7, the second spring 19, and the spring retaining ring 6, so that the shaft 3 is held in place by the preload force of the second spring 19 when no force is applied, thereby providing buffering during the capping process. The bushing 4, shaft 3, universal joint 17, capping drive shaft 13, capping floating shaft 11, and the second spring 19 constitute the power transmission and buffering mechanism.

[0027] The lower end of shaft 3 is connected to universal joint 17 via a pin, and the lower part of universal joint 17 is connected to capping drive shaft 13 via a fixing pin. Capping drive shaft 13 passes through a pair of deep groove ball bearings 23 for stable support, and its bottom is finally connected to capping floating shaft 11 via a pin.

[0028] The bottom of the capping floating shaft 11 is designed with an arc surface structure, which is sandwiched between the cover plate 12 and the capping head 10, with a reserved space in the middle, so that the capping head 10 can tilt at a certain angle relative to the capping floating shaft 11, thereby adapting to the slight unevenness of the barrel opening.

[0029] The floating connection mechanism is one of the key components of this invention, constituting the main floating mechanism. The connecting cylinder 14 is placed in the bottom fixed plate 1 via a conical structure, and its upper part is pressed down by the pressure plate 9. The pressure plate 9 is subjected to downward pressure by a spring-18 and a lower spring pressure ring 8 sleeved on the lead screw 5, enabling the entire connecting cylinder 14 and the capping head mechanism it supports to have adaptive capabilities for vertical floating and tilting at a certain angle, effectively overcoming the problem of barrel mouth deformation. The connecting cylinder 14, pressure plate 9, spring-18, and lower spring pressure ring 8 constitute the main floating mechanism.

[0030] The capping head 10 has multiple pressure plates 25 evenly distributed circumferentially inside. Each pressure plate 25 is surrounded by a ring spring 22, which provides an inward clamping force. The capping head 10, pressure plates 25, and ring spring 22 constitute the capping actuator. When the capping head 10 descends under the drive of the lifting cylinder 21 and covers the lid, the outer side of the lid presses against the pressure plates 25, causing them to expand outward. Subsequently, under the restoring force of the ring spring 22, the pressure plates 25 firmly clamp the lid, preventing it from falling off. This clamping force can be controlled by changing or adjusting the preload of the ring spring 22. Simultaneously, a guide bevel is machined at the bottom inlet of the capping head 10 to facilitate the smooth sliding of the lid.

[0031] Working principle: The lifting cylinder 21 drives the capping mechanism to descend, and the capping head 10 accurately fits and clamps the lid due to its floating and self-adaptive properties; then the servo motor 24 starts, and the power is transmitted to the capping head 10 through the aforementioned transmission path to realize the tightening or loosening operation; the capping torque is precisely controlled by the servo motor 24 to ensure reliable sealing and no damage to the lid.

[0032] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is merely 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. An adaptive capping and sealing device for IBC containers, characterized in that, include: The support frame consists of a bottom fixing plate (1), a top servo motor fixing plate (2), and multiple lead screws (5) connecting the two. The lifting drive component includes a lifting cylinder (21) mounted on the bottom fixed plate (1). Rotational power components include a servo motor (24) and a planetary reducer (20) mounted on the top servo motor mounting plate (2). The main floating mechanism includes a connecting cylinder (14), a pressure plate (9), a spring (18), and a lower spring pressure ring (8). The connecting cylinder (14) is disposed in the bottom fixed plate (1). The pressure plate (9) is pressed on the connecting cylinder (14). The spring (18) is sleeved on the lead screw (5) and applies pressure to the pressure plate (9) through the lower spring pressure ring (8), so that the connecting cylinder (14) and its supporting components have vertical floating and tilt adaptive capabilities. The power transmission and buffer mechanism includes a bushing (4), a shaft (3), a universal joint (17), a capping drive shaft (13), and a capping floating shaft (11) connected in sequence; the shaft (3) is slidably sleeved in the bushing (4), and a second spring (19) is provided between the shaft (3) and the bushing (4). The upper end of the second spring (19) is limited by an upper spring pressure ring (7), and the lower end is limited by a spring retaining ring (6), thus forming a buffer structure; The capping actuator includes a capping head (10) connected to the capping floating shaft (11). The capping head (10) has multiple pressure plates (25) arranged circumferentially inside. The multiple pressure plates (25) are clamped by annular springs (22) to achieve adaptive clamping of the cap.

2. The adaptive capping and sealing device for IBC containers according to claim 1, characterized in that: The capping drive shaft (13) is mounted inside the connecting cylinder (14) via a deep groove ball bearing (23).

3. The IBC container adaptive capping and sealing device according to claim 1, characterized in that: The bottom of the capping head (10) is provided with a guide bevel.

4. The IBC container adaptive capping and sealing device according to claim 1, characterized in that: The bottom of the capping floating shaft (11) is an arc-shaped structure, and it is sandwiched between the cover plate (12) and the capping head (10) on the top and bottom, so that the capping head (10) has a tilting movement space.

5. The IBC container adaptive capping and sealing device according to claim 1, characterized in that: The bushing (4) is axially fixed by a round nut (15).

6. The IBC container adaptive capping and sealing device according to claim 1, characterized in that: The lead screw (5) is provided with a hexagonal nut (16) for adjusting the initial height of the pressure plate (9).

7. The IBC container adaptive capping and sealing device according to claim 1, characterized in that: The lifting cylinder (21) is equipped with a limit nut.

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