Quick-release type cap screwing claw head

Abstract

The utility model discloses a quick release type cap screwing claw head which comprises a cap screwing motor and a chuck pneumatic module which are installed on a lifting assembly, the bottom of the chuck pneumatic module is connected with a cap screwing head through a connecting shaft, a chain wheel located in the lifting assembly is arranged on the outer side of the connecting shaft, and the chain wheel is in chain transmission connection with the output end of the cap screwing motor. An ejector pin is movably installed in the connecting shaft, a piston located in the connecting shaft is arranged at the top of the ejector pin, the connecting shaft above the piston is connected with an air nozzle, and a positioning pin assembly is arranged on the outer side of the joint of the bottom of the connecting shaft and the cap screwing head. Through the matching relation between the positioning pin assemblies with different diameters and the round groove surfaces on the flat keys, the screw cap head can be quickly disassembled and assembled, the screw cap head replacing device is suitable for replacing screw cap heads with different specifications and models, the time for replacing parts is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of capping equipment, in particular to a quick-release capping claw head. Background Art

[0002] The capping head is usually installed on the connecting shaft of the lifting device of the capping machine. When capping, the capping head will rotate with the bottle, and then the lifting device will drive the capping head to descend and drive the capping head to rotate itself to cap the cap held by the capping head on the bottle mouth. The structure of the existing capping head includes: a capping body for capping, and an installation sleeve with internal threads is arranged on the top of the capping body, and the installation sleeve is coaxially arranged with the capping body. External threads are arranged on the connecting shaft of the lifting device of the capping machine, so that the capping head can be installed on the connecting shaft through threaded connection between the installation sleeve and the connecting shaft. However, the capping head installed on the connecting shaft through threaded connection has the disadvantages of time-consuming and laborious work, thus reducing the production efficiency. Content of the Utility Model

[0003] According to the above technical problems to be solved, a quick-release capping claw head is provided.

[0004] To achieve the above object, the utility model discloses a quick-release capping claw head, which includes a capping motor and a chuck pneumatic module installed on a lifting assembly. The bottom of the chuck pneumatic module is connected with a capping head through a connecting shaft. A sprocket is arranged on the outer side of the connecting shaft and is located inside the lifting assembly. The sprocket is connected with the output end of the capping motor through chain drive. A thimble is movably installed inside the connecting shaft. A piston located inside the connecting shaft is arranged at the top of the thimble. The connecting shaft above the piston is connected with a nozzle. A positioning pin assembly is arranged on the outer side of the connection between the bottom of the connecting shaft and the capping head.

[0005] Further, the connecting shaft includes a connecting part connected with the capping head and a transmission part arranged inside the chuck pneumatic module. The connecting part is sleeved on the outer side of the capping head. The positioning pin assembly is installed on the connecting part. A flat key is fixed on one side of the capping head close to the connecting part. The circular groove surface of the flat key contacts with the positioning pin assembly.

[0006] Furthermore, the positioning pin assembly has a structure that is thick at both ends and thin in the middle. One side of the thick end of the positioning pin assembly is provided with a pressing head. A first spring that abuts against the connecting part is arranged inside the pressing head. The contour of the thick end of the positioning pin assembly abuts against the circular groove surface of the flat key.

[0007] Furthermore, the inside of the transmission part is hollow and includes an air cavity connected with the nozzle and an installation groove for installing the thimble. A circlip is arranged between the installation groove and the capping head below. A support ring is installed on the top of the circlip. A second spring sleeved on the outer side of the thimble is installed between the support ring and the piston.

[0008] Furthermore, the cap screwing head includes a cap screwing body, and at least three groups of circumferentially installed claw heads are arranged around the cap screwing body. Bearings abutted against the ejector pin are installed at the tops of the claw heads, and a rotating shaft installed on the cap screwing body is arranged in the middle sections of the claw heads.

[0009] Furthermore, a base is arranged on one side of the bottom of the cap screwing body close to the bottle cap, and a positioning hole coaxially arranged with the ejector pin is opened at the center of the base.

[0010] Furthermore, the ejector pin includes a thick end arranged in the installation groove and a thin end matched with the positioning hole, and the outer contour of the ejector pin abuts against the bearing.

[0011] The beneficial effects produced by the present utility model compared with the prior art: The present utility model discloses a quick-release cap screwing claw head. Through the matching relationship between the positioning pin assemblies with different diameters and the circular groove surface on the flat key, the quick disassembly and assembly of the cap screwing head are realized, which is applicable to the replacement of cap screwing heads of different specifications and models, saves the time for replacing components, and improves production efficiency. Description of the Drawings

[0012] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0014] Figure 2 It is a top view of the present utility model.

[0015] Figure 3 For the present utility model Figure 2 Sectional view A-A.

[0016] Figure 4 It is a front view of the present utility model.

[0017] Figure 5 For the present utility model Figure 4 Sectional view B-B.

[0018] Figure 6 It is a schematic diagram of the position of the positioning pin assembly of the present utility model.

[0019] Figure 7 It is an installation schematic diagram of the positioning pin assembly and the flat key of the present utility model.

[0020] In the figure: 1 is a lifting assembly; 2 is a cap screwing motor; 3 is a chuck pneumatic module; 31 is an air nozzle; 4 is a connecting shaft; 41 is a transmission part; 42 is a connecting part; 5 is a cap screwing head; 51 is a cap screwing body; 52 is a claw head; 53 is a base; 54 is a bearing; 6 is a piston; 7 is a second spring; 8 is an ejector pin; 9 is a positioning pin assembly; 91 is a pressing head; 92 is a first spring; 93 is a flat key. Detailed Description of the Embodiment

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. 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 of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] An embodiment of the present invention, as Figures 1 to 5 shown, includes a capping motor 2 and a chuck pneumatic module 3 installed on a lifting assembly 1. It is characterized in that a capping head 5 is connected to the bottom of the chuck pneumatic module 3 through a connecting shaft 4. A sprocket is arranged outside the connecting shaft 4 and located inside the lifting assembly 1, and the sprocket is chain-drivenly connected to the output end of the capping motor 2. A thimble 8 is movably installed inside the connecting shaft 4. A piston 6 is arranged at the top of the thimble 8 and located inside the connecting shaft 4. The connecting shaft 4 above the piston 6 is connected to a nozzle 31. A positioning pin assembly 9 is arranged outside the connection between the bottom of the connecting shaft 4 and the capping head 5. Through the matching relationship between the positioning pin assemblies with different diameters and the circular groove surface of the flat key, the quick disassembly and assembly of the capping head are realized, which is suitable for the replacement of capping heads of different specifications and models, saves the time for replacing parts, and improves production efficiency.

[0023] As Figures 5 to 7 shown, the connecting shaft 4 includes a connecting portion 42 connected to the capping head 5 and a transmission portion 41 arranged inside the chuck pneumatic module 3. The connecting portion 42 is sleeved outside the capping head, and the positioning pin assembly 9 is installed on the connecting portion 42. A flat key 93 is fixed on one side of the capping head 5 close to the connecting portion 42. The circular groove surface of the flat key 93 contacts the positioning pin assembly 9. The positioning pin assembly 9 has a structure with thick ends and a thin middle. A pressing head 91 is arranged on one side of the thick end of the positioning pin assembly 9. A first spring 92 abutted against the connecting portion 42 is arranged inside the pressing head 91. The thick end contour of the positioning pin assembly 9 abuts against the circular groove surface of the flat key 93. By using different diameters on the positioning pin, under normal conditions, due to the action of the first spring, the thick end of the positioning pin just gets stuck in the circular groove on the flat key installed on the capping head, positioning the capping head; when the capping claw head needs to be replaced, hold the pressing head of the positioning pin and squeeze the first spring to deform, so that the thin end of the positioning pin moves into the circular groove on the flat key of the capping head. Since it is the thin end of the positioning pin in the circular groove at this time and cannot hold the capping claw head, the capping claw head naturally falls off, and vice versa during installation.

[0024] The transmission portion 41 is hollow inside and includes an air chamber connected to the nozzle 31 and an installation groove for installing the thimble 8. A snap ring is arranged between the installation groove and the capping head 5 below. A support ring is installed on the top of the snap ring, and a second spring 7 sleeved outside the thimble 8 is installed between the support ring and the piston 6.

[0025] The capping head 5 includes a capping body 51. At least three groups of circumferentially mounted claw heads 52 are provided around the capping body 51. A bearing 54 in contact with the ejector pin 8 is mounted on the top of the claw head 52. A rotating shaft mounted on the capping body 51 is provided in the middle section of the claw head 52. A base 53 is provided on one side of the bottom of the capping body 51 close to the bottle cap. A positioning hole coaxially arranged with the ejector pin 8 is opened in the center of the base 53. The positioning hole on the base cooperates with the thin end of the ejector pin, which can ensure the coaxiality of the claw head and the entire capping component.

[0026] The ejector pin 8 includes a thick end arranged in the installation groove and a thin end matching the positioning hole. The outer contour of the ejector pin is in contact with the bearing. The opening and closing of the claw head utilize the constant contact between the bearing and the ejector pin. The movement of the ejector pin forces the claw piece to rotate through the rotating shaft, thereby realizing the opening and closing actions.

[0027] The working principle of this embodiment: The opening and closing of the claw head are controlled by the cooperation between the ejector pin and the bearing. When there is no air supply, the ejector pin and the piston are lifted upward due to the action of the second spring. The thin end of the ejector pin is used to position the claw head, and the opening and closing angle of the claw head can be controlled by the diameter of the thin end of the ejector pin. When air is supplied, after the compressed air enters the air chamber, the second spring is compressed and the ejector pin is ejected. The thick end of the ejector pin is used to close the claw head, and the closing angle is controlled by the diameter of the thick end of the ejector pin. When the compressed air is not supplied, the ejector pin and the piston are lifted due to the action of the spring.

[0028] The following points need to be explained: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change. Second, in this article, relational terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0029] The above examples are only illustrative examples of the present invention and do not constitute a limitation on the protection scope of the present invention. Any design identical or similar to the present invention belongs to the protection scope of the present invention.

Claims

1. A quick-release screw cap claw head, comprising a screw cap motor (2) and a chuck pneumatic module (3) installed on a lifting assembly (1), characterized in that, The bottom of the chuck pneumatic module (3) is connected to a capping head (5) through a connecting shaft (4). A sprocket is arranged outside the connecting shaft (4) and is located inside the lifting assembly (1). The sprocket is connected to the output end of the capping motor (2) by chain drive. A thimble (8) is movably installed inside the connecting shaft (4). A piston (6) located inside the connecting shaft (4) is arranged at the top of the thimble (8). The connecting shaft (4) above the piston (6) is connected to a nozzle (31). A positioning pin assembly (9) is arranged outside the connection between the bottom of the connecting shaft (4) and the capping head (5).

2. The quick-release screw cap claw head according to claim 1, characterized in that, The connecting shaft (4) includes a connecting portion (42) connected to the capping head (5) and a transmission portion (41) arranged inside the chuck pneumatic module (3). The connecting portion (42) is sleeved outside the capping head. The positioning pin assembly (9) is installed on the connecting portion (42). A flat key (93) is fixed on one side of the capping head (5) close to the connecting portion (42). The circular groove surface of the flat key (93) contacts the positioning pin assembly (9).

3. The quick-release screw cap claw head according to claim 2, characterized in that, The positioning pin assembly (9) has a structure that is thick at both ends and thin in the middle. A pressing head (91) is arranged on one side of the thick end of the positioning pin assembly (9). A first spring (92) that abuts against the connecting portion (42) is arranged inside the pressing head (91). The contour of the thick end of the positioning pin assembly (9) abuts against the circular groove surface of the flat key (93).

4. The quick-release screw cap claw head according to claim 2, characterized in that, The transmission portion (41) is hollow inside and includes an air chamber connected to the nozzle (31) and an installation groove for installing the thimble (8). A circlip is arranged between the installation groove and the capping head (5) below. A support ring is installed on the top of the circlip. A second spring (7) sleeved outside the thimble (8) is installed between the support ring and the piston (6).

5. A quick-release screw cap claw head according to claim 1, characterized in that, The capping head (5) includes a capping body (51). At least three groups of circumferentially installed claw heads (52) are arranged around the capping body (51). Bearings (54) that abut against the thimble (8) are installed on the tops of the claw heads (52). A rotating shaft installed on the capping body (51) is arranged in the middle section of the claw heads (52).

6. The quick-release screw cap claw head according to claim 5, characterized in that, A base (53) is arranged on one side of the bottom of the capping body (51) close to the bottle cap. A positioning hole coaxially arranged with the thimble (8) is opened in the center of the base (53).

7. A quick-release screw cap claw head according to claim 6, characterized in that, The thimble (8) includes a thick end arranged in the installation groove and a thin end matching the positioning hole. The outer contour of the thimble abuts against the bearing.

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