Capping device and capping machine

Abstract

The present invention relates to the technical field of packaging equipment, and specifically discloses a cap-grabbing device and a capping machine. The cap-grabbing device of the present invention includes a first connecting sleeve and a sliding sleeve that are movably connected. A capping die is provided on the sliding sleeve, and at least two ejector blocks are movably provided on the capping die. An elastic ring is provided on the outer side of the ejector block, and the elastic ring can limit the movement of the ejector block away from the axis of the capping die. The sliding sleeve can rotate relative to the axis of the first connecting sleeve, so that when the ejector block clamps the bottle cap, the boss of the bottle cap is far away from the ejector block. The cap-grabbing device of the present invention can adjust the angle between the sliding sleeve and the first connecting sleeve, and can avoid interference between the ejector block of the capping die and the boss of the bottle cap when grabbing the bottle cap, and can also ensure the consistency of the direction of grabbing the cap; by providing an elastic ring on the outer side of the ejector block, the movement of the ejector block can also be limited and pressure can be provided to the ejector block, thereby improving the grabbing firmness of the cap-grabbing device and avoiding bad phenomena such as incorrect cap-grabbing and skewed capping.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, and particularly to a cap grasping device and a capping machine. Background Art

[0002] With the development of society and the continuous improvement of people's living standards, people's requirements for the grade of consumer goods are also constantly increasing. Therefore, the appearance of products is gradually optimized. Especially in industries such as beverages, wines, chemicals, or pharmaceuticals, there are not only various types of container bottles, but also various types of container caps are used in supporting. For the packaging containers of edible oil, soy sauce, vinegar, etc. that are often used in daily life, in order to meet the user-friendly requirement of facilitating the pouring of the liquid in the bottle, usually a boss is provided on the cap opening, and the direction of the boss on the cap is opposite to the direction of the handle on the bottle body. For such caps provided with bosses, it is necessary to determine the orientation of the boss on the cap before capping, and then perform a cap grasping and moving operation on the cap through the cap grasping device, and then press the cap onto the bottle mouth.

[0003] However, in the existing rotary capping machine, when the capping die of the cap grasping device grasps the cap, it often interferes with the boss of the cap and cannot firmly grasp the cap. At the same time, since the existing cap grasping device cannot ensure the consistency of the direction of grasping the cap, there may be adverse phenomena such as incorrect cap grasping and skewed capping. Summary of the Invention

[0004] An object of an embodiment of the present invention is to provide a cap grasping device, which can avoid the interference between the top block of the capping die and the boss of the cap, and also ensure the consistency of the direction of grasping the cap, and has a high grasping firmness.

[0005] Another object of an embodiment of the present invention is to provide a capping machine, which ensures the consistency of the direction of grasping the cap and avoids adverse phenomena such as incorrect cap grasping and skewed capping.

[0006] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0007] In a first aspect, a cap grasping device is provided, which includes a first connecting sleeve and a sliding sleeve that are movably connected. A capping die is arranged on the sliding sleeve, and at least two top blocks are movably arranged on the capping die. An elastic ring is arranged on the outer side of the top block, and the elastic ring can limit the movement of the top block away from the axis of the capping die. The sliding sleeve can rotate relative to the axis of the first connecting sleeve, so that when the top block clamps the cap, the boss of the cap is away from the top block.

[0008] As a preferred embodiment of the cap grasping device, a ejector rod is movably arranged between the first connecting sleeve and the sliding sleeve, a through hole is provided through the axis of the capping die, and the ejector rod can axially move relative to the first connecting sleeve and penetrate through the through hole so as to push the bottle cap away.

[0009] As a preferred embodiment of the cap grasping device, a pressing block is movably arranged at the end of the ejector rod, and the pressing block can axially move relative to the ejector rod.

[0010] As a preferred embodiment of the cap grasping device, a return spring is arranged between the ejector rod and the first connecting sleeve.

[0011] As a preferred embodiment of the cap grasping device, a second connecting sleeve is arranged between the first connecting sleeve and the ejector rod, the second connecting sleeve is movably connected to the first connecting sleeve, a preloading spring is arranged between the first connecting sleeve and the second connecting sleeve, and the preloading spring always has a tendency to drive the first connecting sleeve and the second connecting sleeve to move away from each other.

[0012] As a preferred embodiment of the cap grasping device, a guide groove is arranged on the first connecting sleeve, a locking key is arranged in the guide groove, and the locking key can slide on the guide groove and can lock the first connecting sleeve and the second connecting sleeve.

[0013] As a preferred embodiment of the cap grasping device, at least two protruding portions are arranged on one side surface of the top block close to the bottle cap, and the protruding direction of the protruding portions faces the axis of the capping die.

[0014] As a preferred embodiment of the cap grasping device, a stop portion is arranged between the first connecting sleeve and the sliding sleeve.

[0015] As a preferred embodiment of the cap grasping device, a detection device is arranged on the sliding sleeve, a controller is arranged on the first connecting sleeve, a driving mechanism is arranged between the first connecting sleeve and the sliding sleeve, the detection device and the driving mechanism are respectively connected to the controller, the driving mechanism is used to drive the sliding sleeve to rotate relative to the first connecting sleeve, and the detection device is used to detect the distance between the convex platform and the top block.

[0016] In a second aspect, a capping machine is provided, which includes a cap feeding device and the cap grasping device, the cap grasping device is connected to the cap feeding device, and the cap grasping device is used to grasp and clamp the bottle caps transported by the cap feeding device.

[0017] The beneficial effects of the embodiments of the present invention are:

[0018] The first connecting sleeve and the sliding sleeve are movably connected. A capping die is arranged on the sliding sleeve, and at least two ejector blocks are movably arranged on the capping die. An elastic ring is arranged on the outer side of the ejector block. The elastic ring can limit the movement of the ejector block away from the axis of the capping die. When the capping die approaches the bottle cap, the bottle cap can be inserted between at least two ejector blocks. Since the movement of the ejector block is restricted by the elastic ring, the bottle cap can be clamped by the ejector blocks. Since the sliding sleeve can rotate relative to the axis of the first connecting sleeve, the relative angle of the sliding sleeve relative to the first connecting sleeve can be adjusted so that when the ejector block clamps the bottle cap, the boss of the bottle cap is away from the ejector block, avoiding interference between the boss of the bottle cap and the capping die and the ejector block. Therefore, the cap-grabbing device of the embodiment of the present invention can adjust the angle between the sliding sleeve and the first connecting sleeve, and can avoid interference between the ejector block of the capping die and the boss of the bottle cap when grabbing the bottle cap, and can also ensure the consistency of the direction of grabbing the cap; by arranging an elastic ring on the outer side of the ejector block, the movement of the ejector block can also be restricted and pressure can be provided to the ejector block, thereby improving the grabbing firmness of the cap-grabbing device and avoiding bad phenomena such as incorrect cap-grabbing and skewed capping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0020] Figure 1 It is a schematic side-sectional structure view of a cap-grabbing device provided by an embodiment of the present invention.

[0021] Figure 2 It is a schematic bottom-sectional structure view of a cap-grabbing device provided by an embodiment of the present invention.

[0022] Figure 3 It is a schematic side-sectional structure view of a cap-grabbing device provided by another embodiment of the present invention.

[0023] Figure 4 It is a partial structure axonometric view of a cap-grabbing device provided by an embodiment of the present invention.

[0024] Figure 5 It is a partial structure schematic view of a capping machine provided by an embodiment of the present invention.

[0025] In the figure:

[0026] 1. Cap-grabbing device; 11. First connecting sleeve; 111. Guide groove; 112. Locking key; 113. Controller; 12. Sliding sleeve; 121. Capping die; 1210. Through hole; 122. Ejector block; 1220. Protrusion; 123. Elastic ring; 13. Thumb rod; 131. Pressing block; 14. Return spring; 15. Second connecting sleeve; 16. Preloading spring; 17. Stopping part; 18. Detection device; 19. Driving mechanism; 2. Cap-feeding device; 21. Limiting block; 200. Bottle cap; 201. Boss. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the technical problems solved by the present invention, the technical solutions adopted, and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0028] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below", and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0030] Reference Figure 1 and Figure 2 Referring to

[0031] In the embodiment of the present invention, the first connecting sleeve 11 and the sliding sleeve 12 are movably connected, a capping mold 121 is arranged on the sliding sleeve 12, and at least two top blocks 122 are movably arranged on the capping mold 121, and an elastic ring 123 is arranged on the outer side of the top block 122. The elastic ring 123 can limit the top block 122 from moving away from the axial center of the capping mold 121, so that when the capping mold 121 approaches the bottle cap 200, the bottle cap 200 can be inserted between at least two top blocks 122. Since the top block 122 is restricted from moving by the elastic ring 123, the bottle cap 200 can be clamped by the top block 122. Since the sliding sleeve 12 can rotate relative to the axis of the first connecting sleeve 11, the relative angle of the sliding sleeve 12 relative to the first connecting sleeve 11 can be adjusted, so that when the top block 122 clamps the bottle cap 200, the boss 201 of the bottle cap 200 is away from the top block 122, avoiding the boss 201 of the bottle cap 200 from interfering with the capping mold 121 and the top block 122. Therefore, the cap grabbing device 1 of the embodiment of the present invention can adjust the angle of the sliding sleeve 12 and the first connecting sleeve 11, avoid the top block 122 of the capping mold 121 from interfering with the boss 201 of the bottle cap 200 when grabbing the bottle cap 200, and ensure the consistency of the direction of grabbing the cap; by arranging the elastic ring 123 on the outer side of the top block 122, the movement of the top block 122 can be limited and pressure can be provided to the top block 122, thereby improving the grabbing firmness of the cap grabbing device 1 and avoiding the occurrence of undesirable phenomena such as incorrectly grasping the cap and crooked capping.

[0032] There are various ways to connect the top block 122 to the capping mold 121. Preferably, a groove is provided on the capping mold 121, and the top block 122 is arranged in the groove of the capping mold 121, and the top block 122 can move radially outward or inward relative to the axis of the capping mold 121.

[0033] In addition, refer to Figure 1 The first connecting sleeve 11 and the sliding sleeve 12 can be connected through a cover mold 121, wherein the sliding sleeve 12 is fixedly connected to the cover mold 121, and the cover mold 121 is slidably connected to the first connecting sleeve 11, so that the first connecting sleeve 11 and the sliding sleeve 12 can slide relative to each other.

[0034] In order to recycle the cap grabbing device 1, in the arrangement of the production line, after grabbing the bottle cap 200 at the head end of the production line, the cap grabbing device 1 usually puts down the bottle cap 200 at the end of the production line, for example, by capping the bottle cap 200 on the flat mouth of the bottle through the capping mold 121. However, the connection between the bottle cap 200 and the bottle mouth may be unstable, resulting in the bottle cap 200 being unable to detach from the capping mold 121, which affects the grabbing of the next bottle cap 200. In one embodiment, referring to Figure 3, a push rod 13 is movably arranged between the first connecting sleeve 11 and the sliding sleeve 12. A through hole 1210 is axially penetrated through the pressing die 121. The push rod 13 can axially move relative to the first connecting sleeve 11 and penetrate through the through hole 1210. When the bottle cap 200 cannot be separated from the pressing die 121, the push rod 13 extends out from the through hole 1210, so that the bottle cap 200 can be pushed away from the pressing die 121.

[0035] Further, continue to refer to Figure 3 , a pressing block 131 is movably arranged at the end of the push rod 13. The pressing block 131 can axially move relative to the push rod 13, thereby shortening or lengthening the push rod 13. When facing bottle caps 200 of different specifications, the pressing die 121 can be set with different specification heights. At this time, by setting the pressing block 131 that can be movably connected to the push rod 13, the push rod 13 can be shortened or lengthened, so that bottle caps 200 of different specifications can be pushed away from the pressing die 121.

[0036] Particularly, continue to refer to Figure 3 , a return spring 14 is arranged between the push rod 13 and the first connecting sleeve 11. When the push rod 13 extends out of the through hole 1210 of the first connecting sleeve 11, the return spring 14 can spring back the push rod 13 into the first connecting sleeve 11, which can save the kinetic energy for driving the push rod 13 to move.

[0037] In addition, continue to refer to Figure 3 , a second connecting sleeve 15 is arranged between the first connecting sleeve 11 and the push rod 13. The second connecting sleeve 15 is movably connected to the first connecting sleeve 11. A preloading spring 16 is arranged between the first connecting sleeve 11 and the second connecting sleeve 15. The preloading spring 16 always has a tendency to drive the first connecting sleeve 11 and the second connecting sleeve 15 to move away from each other. By setting the second connecting sleeve 15 that can be movably connected to the first connecting sleeve 11, the first connecting sleeve 11 can be extended. In addition, it can also play a further limiting role on the push rod 13. And by arranging the preloading spring 16 between the first connecting sleeve 11 and the second connecting sleeve 15, using the preloading force of the preloading spring 16 on the first connecting sleeve 11 and the second connecting sleeve 15, when the cap grasping device 1 caps the bottle cap 200 onto the bottle, the impact force between the pressing die 121 and the bottle can be buffered. Also, when the second connecting sleeve 15 twists relative to the first connecting sleeve 11, it can be reset to the original position by the preloading spring 16.

[0038] Further, continue to refer to Figure 3, a guide groove 111 is provided on the first connecting sleeve 11, and a locking key 112 is arranged in the guide groove 111. The locking key 112 can slide on the guide groove 111. After the relative distance between the first connecting sleeve 11 and the second connecting sleeve 15 can be adjusted, the first connecting sleeve 11 and the second connecting sleeve 15 can be locked and connected through the locking key 112. The guide groove 111 can limit the relative rotation between the first connecting sleeve 11 and the second connecting sleeve 15.

[0039] In another embodiment, referring to Figure 2 and Figure 4 , at least two protruding portions 1220 are provided on one side surface of the top block 122 close to the bottle cap 200. The bottle cap 200 is clamped through the protruding portions 1220. Since the protruding direction of the protruding portions 1220 faces the axis of the capping die 121, the center of the bottle cap 200 can be kept concentric with the axis of the capping die 121, improving the positioning accuracy of the cap grasping device 1 for grasping the bottle cap 200 in this embodiment.

[0040] Preferably, continuing to refer to Figure 1 , a stopping portion 17 is provided between the first connecting sleeve 11 and the sliding sleeve 12. The stopping portion 17 can limit the rotation of the first connecting sleeve 11 and the sliding sleeve 12. When the sliding sleeve 12 rotates to a position where the top block 122 does not interfere with the boss 201 of the bottle cap 200, the connection stability between the first connecting sleeve 11 and the sliding sleeve 12 is ensured through the stopping portion 17, avoiding rotation between the first connecting sleeve 11 and the sliding sleeve 12 when the cap grasping device 1 operates.

[0041] In another preferred embodiment, referring to Figure 2 and Figure 3 , a detection device 18 is provided on the sliding sleeve 12, a controller 113 is provided on the first connecting sleeve 11, and a driving mechanism 19 is provided between the first connecting sleeve 11 and the sliding sleeve 12. The detection device 18 and the driving mechanism 19 are respectively connected to the controller 113. The driving mechanism 19 is used to drive the sliding sleeve 12 to rotate relative to the first connecting sleeve 11, and the detection device 18 is used to detect the distance between the boss 201 and the top block 122. When the boss 201 coincides with the top block 122, the top block 122 will interfere with the connection between the top block 122 and the boss 201 of the bottle cap 200. When the distance between the boss 201 and the top block 122 is detected to be less than a preset distance threshold, the controller 113 controls the driving mechanism 19 to act, so as to drive the sliding sleeve 12 to rotate relative to the first connecting sleeve 11 until the distance between the boss 201 and the top block 122 is greater than or equal to the preset distance threshold. This embodiment can automatically complete the rotational adjustment between the sliding sleeve 12 and the first connecting sleeve 11, further avoiding the connection interference between the top block 122 and the boss 201 of the bottle cap 200.

[0042] The driving mechanism 19 of this embodiment can be a combination of a driving motor and a rolling wheel, or a combination of a driving motor and a gear. The first connecting sleeve 11 is provided with teeth corresponding to the gear tooth profile, which is not specifically limited in this embodiment.

[0043] refer to Figure 5 The embodiment of the present invention further provides a capping machine, comprising a cap feeding device 2 and a cap grabbing device 1 of any of the above embodiments, the cap grabbing device 1 is connected to the cap feeding device 2, and the cap grabbing device 1 is used to grab and clamp the bottle caps 200 transported by the cap feeding device 2. The cap grabbing device 1 in this embodiment can have the same structure and achieve the same effect as the cap grabbing device 1 in the above embodiments, and will not be described in detail in this embodiment.

[0044] Optionally, the cap feeding device 2 of this embodiment is provided with a limit block 21 capable of fixing the boss 201 of the bottle cap 200 , and the limit block 21 can limit the rotation of the bottle cap 200 .

[0045] In the description of this article, it should be understood that the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used to distinguish in the description and have no special meaning.

[0046] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0047] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0048] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A lid-grabbing device, characterized in that, It includes a first connecting sleeve and a sliding sleeve that are movably connected. A capping die is provided on the sliding sleeve, and at least two ejector blocks are movably provided on the capping die. An elastic ring is provided on the outer side of the ejector block, and the elastic ring can limit the movement of the ejector block away from the axis of the capping die. The sliding sleeve can rotate relative to the axis of the first connecting sleeve, so that when the ejector block clamps the bottle cap, the boss of the bottle cap is away from the ejector block; A ejector rod is movably provided between the first connecting sleeve and the sliding sleeve. A through hole is provided through the axis of the capping die, and the ejector rod can axially move relative to the first connecting sleeve and penetrate through the through hole to eject the bottle cap; A pressing block is movably provided at the end of the ejector rod, and the pressing block can axially move relative to the ejector rod; A detection device is provided on the sliding sleeve, a controller is provided on the first connecting sleeve, a driving mechanism is provided between the first connecting sleeve and the sliding sleeve. The detection device and the driving mechanism are respectively connected to the controller. The driving mechanism is used to drive the sliding sleeve to rotate relative to the first connecting sleeve, and the detection device is used to detect the distance between the boss and the ejector block.

2. The lid-grabbing device according to claim 1, wherein A return spring is provided between the ejector rod and the first connecting sleeve.

3. The lid-gripping device according to claim 1, wherein, A second connecting sleeve is provided between the first connecting sleeve and the ejector rod. The second connecting sleeve is movably connected to the first connecting sleeve. A preloading spring is provided between the first connecting sleeve and the second connecting sleeve, and the preloading spring always has a tendency to drive the first connecting sleeve and the second connecting sleeve to move away from each other.

4. The lid-grabbing device according to claim 3, characterized in that, A guide groove is provided on the first connecting sleeve, and a locking key is provided in the guide groove. The locking key can slide on the guide groove and can lock the first connecting sleeve and the second connecting sleeve.

5. The lid-grabbing device according to claim 1, wherein, At least two protruding portions are provided on the side surface of the ejector block close to the bottle cap, and the protruding direction of the protruding portion is towards the axis of the capping die.

6. The lid-grabbing device according to claim 1, characterized in that, A stop portion is provided between the first connecting sleeve and the sliding sleeve.

7. A capping machine, characterized in that, It includes a cap feeding device and the cap grasping device according to any one of claims 1 to 6. The cap grasping device is connected to the cap feeding device, and the cap grasping device is used to grasp and clamp the bottle caps transported by the cap feeding device.

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