A lid-grabbing device

Abstract

The present invention relates to a cap-grabbing device, which includes a cap-pushing disk, a turntable, a chuck, a tray, a cap-pushing star wheel and a cap-grabbing assembly. The chuck is sleeved outside the turntable, the tray is sleeved outside the turntable and is detachably fixed to the lower side of the chuck. The cap-pushing disk is arranged outside one side of the tray, the cap-pushing star wheel is rotatably arranged above the cap-pushing disk, and a plurality of cap-grabbing assemblies are arranged on the tray at equal angular intervals along the circumferential direction. The present invention can be applicable to bottle caps of various heights, greatly improving the compatibility. Only one kind of cap-grabbing device is needed for various bottle caps to complete the production task, greatly reducing the production cost and being suitable for large-area popularization.

Description

Technical Field

[0001] The present invention relates to a cap-gripping device. Background Art

[0002] In the packaging industry, after a liquid is filled into a bottle, a bottle cap needs to be put on for sealing. A capping device is a device that can automatically screw the bottle cap tightly onto the bottle mouth to seal the bottle filled with liquid, and before screwing the cap, a cap-gripping device is needed to move the cap into the capping device; the shapes of bottles in the market are diverse, and the shapes of bottle caps also increase accordingly. The existing cap-gripping devices can only be applicable to bottle caps of one height, with poor compatibility. Multiple types of bottle caps require multiple cap-gripping devices, resulting in high production costs and thus need to be further improved. Summary of the Invention

[0003] Aiming at the current situation of the above-mentioned existing technology, the technical problem to be solved by the present invention is to provide a cap-gripping device that can be applicable to bottle caps of multiple heights, greatly improving compatibility and thus significantly reducing production costs.

[0004] The technical solution adopted by the present invention to solve the above technical problem is as follows: A cap-gripping device includes a cap-pushing disc, a turntable, a chuck, a tray, a cap-pushing star wheel, and a cap-gripping assembly. The chuck is sleeved outside the turntable, the tray is sleeved outside the turntable and detachably fixed to the lower side of the chuck. The cap-pushing disc is arranged outside one side of the tray, and the cap-pushing star wheel is rotatably arranged above the cap-pushing disc. It is characterized in that a plurality of cap-gripping assemblies are arranged on the tray at equal angular intervals in the circumferential direction. The cap-gripping assembly includes a guide block, a roller, a wheel shaft, a swing arm, a bearing seat, a rotating shaft, a bearing, a cover plate, and a reset assembly; the bearing seat is inserted and fixed in the tray, the bearing is embedded in the bearing seat, the cover plate is arranged at the upper opening of the bearing seat, the swing arm is horizontally arranged below the tray and connected to the tray through a rotating shaft. The rotating shaft is vertically inserted through the bottom of the bearing seat, the lower end of the rotating shaft is fixed on the swing arm, the upper end of the rotating shaft is inserted and connected to the bearing, the guide block is fixed to the lower side of the cap-pushing disc, the wheel shaft is vertically fixed to the lower side edge of the swing arm, the roller is rotatably sleeved on the wheel shaft and is movably arranged in the guide block, and the reset assembly is arranged between the swing arm and the tray.

[0005] Preferably, the reset assembly includes a first connecting shaft, a second connecting shaft, and a tension spring; the first connecting shaft and the second connecting shaft are respectively fixed to the lower sides of the tray and the swing arm and cooperate with each other, and the two ends of the tension spring are respectively connected to the first connecting shaft and the second connecting shaft.

[0006] Preferably, a sunken cavity is formed on the upper side edge of the swing arm, the bottom surface of the sunken cavity is flush with the upper plane of the cap-pushing disc, and an arc-shaped cavity is formed on the inner wall of the sunken cavity.

[0007] Preferably, a guiding groove is formed on the upper side of the guiding block, and the roller is arranged in the guiding groove.

[0008] Compared with the prior art, the advantages of the present invention are as follows: The present invention can be applied to bottle caps of various heights, greatly improving the compatibility. Only one kind of cap-grabbing device is needed for various bottle caps to complete the production task, greatly reducing the production cost, and being suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a front half-sectional structure diagram of the present invention;

[0010] Figure 2 is a top view structure diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] As Figures 1 - 2 shown, a cap-grabbing device includes a cap-pushing disc 1, a turntable 12, a chuck 13, a tray 10, a cap-pushing star wheel 11 and a cap-grabbing assembly. The chuck 13 is sleeved outside the turntable 12. The tray 10 is sleeved outside the turntable 12 and is detachably fixed to the lower side of the chuck 13. The cap-pushing disc 1 is arranged outside one side of the tray 10. The cap-pushing star wheel 11 is rotatably arranged above the cap-pushing disc 1. A plurality of cap-grabbing assemblies are arranged on the tray 10 at equal angular intervals along the circumferential direction. The cap-grabbing assembly includes a guiding block 2, a roller 3, a wheel shaft 4, a swing arm 5, a bearing seat 6, a rotating shaft 7, a bearing 8, a cover plate 9 and a reset assembly. The bearing seat 6 is inserted and fixed in the tray 10. The bearing 8 is embedded in the bearing seat 6. The cover plate 9 is arranged at the upper opening of the bearing seat 6. The swing arm 5 is horizontally arranged below the tray 10 and is connected to the tray 10 through the rotating shaft 7. The rotating shaft 7 is vertically inserted through the bottom of the bearing seat 6. The lower end of the rotating shaft 7 is fixed on the swing arm 5. The upper end of the rotating shaft 7 is inserted and connected to the bearing 8. The guiding block 2 is fixed to the lower side of the cap-pushing disc 1. The wheel shaft 4 is vertically fixed to the lower side edge of the swing arm 5. The roller 3 is rotatably sleeved on the wheel shaft 4 and is movably arranged in the guiding block 2. The reset assembly is arranged between the swing arm 5 and the tray 10. The reset assembly includes a first connecting shaft 14, a second connecting shaft 15 and a tension spring 11. The first connecting shaft 14 and the second connecting shaft 15 are respectively fixed to the lower sides of the tray 10 and the swing arm 5 and cooperate with each other. The two ends of the tension spring 11 are respectively connected to the first connecting shaft 14 and the second connecting shaft 15. An inner cavity 51 is formed on the upper side edge of the swing arm 5. The bottom surface of the inner cavity 51 is flush with the upper plane of the cap-pushing disc 1. An arc-shaped cavity 52 is formed on the inner wall of the inner cavity 51. A guiding groove 21 is formed on the upper side of the guiding block 2, and the roller 3 is arranged in the guiding groove 21.

[0012] Working principle: the turntable 12 drives the tray 10 to rotate counterclockwise with the help of the chuck 13, and then drives multiple cap-grabbing components to rotate synchronously in the same direction. When the roller 3 in one of the cap-grabbing components enters the guide groove 21, the roller 3 will roll along the track of the guide groove 21, and then drive the swing arm 5 to rotate a certain angle around the rotating shaft 7 with the help of the wheel shaft 4. During this process, the tension spring 11 is stretched, and the swing arm 5 continues to rotate with the tray 10 while swinging; at this time, the bottle cap 16 arranged on the upper plane of the cap-pushing plate 1 rotates clockwise under the tossing of the cap-pushing star wheel 11. Then, the swing arm 5 continues to rotate with the tray 10, so that the bottle cap 16 enters the arc-shaped cavity 52 and gradually separates from the cap-pulling star wheel 11. When the roller 3 leaves the guide groove 21, the tension spring 11 automatically recovers by its own rebound force, and then pulls the swing arm 5 to reset with the help of the second connecting shaft 15. Finally, the bottle cap 16 continues to rotate under the drive of the swing arm 5 to get close to the bottle body, and is finally screwed on the bottle mouth under the action of the capping device, thereby forming a cycle.

[0013] The capping device is a device that can automatically tighten the bottle cap on the bottle mouth to seal the bottle body that has been filled with liquid, and the bottle cap needs to be moved into the capping device with the help of a cap grabbing device before being tightened; the bottle body shapes on the market are diverse, and the bottle cap shapes are also increasing accordingly, and the existing cap grabbing device can only be applicable to bottle caps of one height, and the compatibility is poor. Multiple bottle caps need to be equipped with multiple cap grabbing devices, and the production cost is high; the present invention can be applicable to bottle caps of various heights, greatly improving the compatibility, and multiple bottle caps only need to be equipped with one cap grabbing device to complete the production task, which greatly reduces the production cost and is suitable for large-scale promotion.

[0014] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lid-gripping device, comprising a lid-pushing disc, a turntable, a chuck, a tray, a lid-pushing star wheel and a lid-gripping assembly. The chuck is sleeved outside the turntable. The tray is sleeved outside the turntable and detachably fixed to the lower side of the chuck. The lid-pushing disc is arranged outside one side of the tray. The lid-pushing star wheel is rotatably arranged above the lid-pushing disc, and is characterized in that The tray is provided with a plurality of cover grabbing assemblies distributed at equal angles along the circumferential direction, and the cover grabbing assembly includes a guide block, a roller, a wheel axle, a swing arm, a bearing seat, a rotating shaft, a bearing, a cover plate and a reset assembly; the bearing seat is inserted and fixed in the tray, the bearing is embedded in the bearing seat, the cover plate is arranged at the upper end opening of the bearing seat, the swing arm is horizontally arranged below the tray and connected to the tray through a rotating shaft, the rotating shaft is vertically inserted in the bottom of the bearing seat, the lower end of the rotating shaft is fixed on the swing arm, the upper end of the rotating shaft is inserted and connected in the bearing, the guide block is fixed on the lower side of the cover picking plate, the wheel axle is vertically fixed to the lower side edge of the swing arm, the roller is rotatably sleeved on the wheel axle and movably arranged in the guide block, and the reset assembly is arranged between the swing arm and the tray; The reset assembly includes a first connecting shaft, a second connecting shaft and a tension spring; the first connecting shaft and the second connecting shaft are respectively fixed to the lower side of the tray and the swing arm and cooperate with each other, and the two ends of the tension spring are respectively connected to the first connecting shaft and the second connecting shaft; a sinking cavity is formed on the upper edge of the swing arm, the bottom surface of the sinking cavity is flush with the upper plane of the cover plate, and an arc cavity is formed on the inner wall of the sinking cavity; a guide groove is formed on the upper side of the guide block, and the roller is arranged in the guide groove; The turntable drives the tray to rotate counterclockwise with the help of the chuck, thereby driving multiple cover-grabbing components to rotate synchronously in the same direction. When the roller in one of the cover-grabbing components enters the guide groove, the roller will roll along the trajectory of the guide groove, and then drive the swing arm to rotate a certain angle around the rotating shaft with the help of the wheel shaft. In this process, the tension spring is stretched, and the swing arm continues to rotate with the tray while swinging; at this time, the bottle cap arranged on the upper plane of the cover-pulling plate moves clockwise under the tossing of the cover-pulling star wheel, and then enters the sinking cavity on one of the swing arms; then, the above-mentioned swing arm continues to rotate with the tray, thereby causing the bottle cap to enter the arc-shaped cavity and gradually separate from the cover-pulling star wheel. When the roller leaves the guide groove, the tension spring automatically recovers with its own rebound force, and then with the help of the second connecting The shaft pulls the swing arm to reset, and finally, the bottle cap continues to rotate under the drive of the swing arm to get closer to the bottle body. Finally, the bottle is screwed onto the bottle mouth by the capping device, thus forming a cycle.

Images