Cap screwing and bottle holding anti-rotation mechanism of cap screwing device

Abstract

The utility model relates to the technical field of cap screwing equipment, and discloses a cap screwing and bottle holding anti-rotation mechanism of a cap screwing device, the cap screwing and bottle holding anti-rotation mechanism comprises a first clamping jaw, a second clamping jaw and a driving structure, the first clamping jaw and the second clamping jaw are arranged on the two sides of a conveying mechanism in the conveying direction respectively, and when the first clamping jaw abuts against the second clamping jaw, the driving structure drives the first clamping jaw to rotate. The first clamping jaw and the second clamping jaw jointly form a clamping space matched with the peripheral face of a bottle body, and rubber pads are arranged on the opposite side faces of the first clamping jaw and the second clamping jaw so that the first clamping jaw and the second clamping jaw can make contact with the peripheral face of the bottle body through the rubber pads. The driving structure is used for driving the first clamping jaw and the second clamping jaw to move in the direction close to or away from each other, the situation that the bottle bodies rotate along with the bottle caps is avoided, then the connection sealing performance of the bottle caps is improved, and particularly for the bottle bodies for containing disinfectant or hand sanitizer, the bottle bodies are prone to deformation due to the fact that the wall thickness of the bottle bodies is small, and the bottle bodies cannot be damaged. By means of the cap screwing and bottle holding anti-rotation mechanism, the risk of deformation of the bottle body can be greatly reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of capping equipment, and specifically relates to a capping bottle-holding anti-rotation mechanism of a capping device. Background Art

[0002] The capping device, also known as the capping device, the pressing device or the locking device, is a packaging mechanical equipment used to press and screw the caps on various bottles containing contents. It is an important part of the filling production line.

[0003] In the related art, the screw capping device is usually provided with a screw cap bottle-holding anti-rotation mechanism, which is used to clamp the bottle body to prevent the bottle body from rotating with the bottle cap, so as to increase the sealing between the bottle cap and the bottle body. However, the existing screw cap bottle-holding anti-rotation mechanism is usually a flat rigid clamping claw provided on the side of the conveying mechanism, and the bottle body of items such as disinfectant or hand sanitizer is generally round and has a small wall thickness, which makes the bottle body easy to deform, resulting in the screw cap anti-rotation mechanism clamping the bottle body with a small wall thickness. The bottle body is easy to deform when the screw cap anti-rotation mechanism clamps the bottle body with a small wall thickness, which makes the contents in the bottle body easy to overflow, and the bottle body will become shrunken after the cap is screwed, which leads to poor effect of screwing the cap on the bottle body with a small wall thickness, affecting the production quality. Utility Model Content

[0004] The present application provides a screw capping bottle-holding anti-rotation mechanism of a screw capping device, so as to increase the screw capping effect on bottles with smaller wall thicknesses and improve production quality.

[0005] The technical solutions adopted in this application are:

[0006] A screw-on bottle-holding anti-rotation mechanism of a screw-on cap device comprises a first clamping jaw, a second clamping jaw and a driving structure, wherein the first clamping jaw and the second clamping jaw are respectively arranged on both sides of a conveying direction of a conveying mechanism, and when the first clamping jaw and the second clamping jaw conflict with each other, the first clamping jaw and the second clamping jaw jointly form a clamping space adapted to the outer circumference of the bottle body, and rubber pads are provided on the opposite sides of the first clamping jaw and the second clamping jaw so that the first clamping jaw and the second clamping jaw both contact the outer circumference of the bottle body through the rubber pads, and the driving structure is used to drive the first clamping jaw and the second clamping jaw to move toward or away from each other.

[0007] By adopting the above-mentioned technical solution, when using the screw cap bottle-holding anti-rotation mechanism in the present application, the driving structure is installed on the conveying mechanism, and the first clamping jaw and the second clamping jaw are respectively arranged on both sides of the conveying direction of the conveying mechanism, and the first clamping jaw and the second clamping jaw are opposite to the screwing mechanism. When the bottle body is screwed with the cap, the conveying mechanism conveys the bottle body containing the contents. When the bottle body is conveyed to the bottom of the screwing mechanism, the driving structure drives the first clamping jaw and the second clamping jaw, and then the first clamping jaw and the second clamping jaw move in a direction close to each other, so that the first clamping jaw and the second clamping jaw clash with each other. Since the first clamping jaw and the second clamping jaw clash with each other, they form a clamping space that is adapted to the outer peripheral surface of the bottle body, so that the first clamping jaw and the second clamping jaw clamp and fix the bottle body to prevent the bottle body from rotating with the bottle cap, thereby increasing the sealing performance of the connection between the bottle cap and the bottle body. Because the opposite sides of the first clamp and the second clamp are provided with rubber pads, the clamping stability of the first clamp and the second clamp on the bottle body is increased, so that the bottle body can rotate with the bottle cap, and the sealing performance of the connection between the bottle cap and the bottle body is further improved; because when the first clamp and the second clamp are in conflict, they form a clamping space that matches the outer peripheral surface of the bottle body, thereby avoiding the overflow of the contents in the bottle body due to the large clamping force applied by the first clamp and the second clamp on the bottle body, and avoiding the shrinkage of the bottle body, so as to ensure the production quality and increase the cleanliness of the production environment. Especially for bottles used to contain disinfectants or hand sanitizers, which are easy to deform due to their thin wall thickness, the screw cap bottle holding and anti-rotation mechanism in this application can greatly reduce the risk of bottle deformation.

[0008] Optionally, the driving structure includes a driving member, a driving rod transmission-connected to the driving member, a first transmission block threadedly connected to the driving rod, and a second transmission block threadedly connected to the driving rod. When the driving rod rotates, the first transmission block and the second transmission block move in a direction approaching or moving away from each other, the first clamp is connected to the first transmission block, and the second clamp is connected to the second transmission block.

[0009] By adopting the above technical solution, when the bottle body containing the contents moves to the bottom of the screwing mechanism under the action of the conveying mechanism, the driving member drives the driving rod, which then causes the driving rod to rotate, and the first transmission block and the second transmission block move in a direction approaching each other, so that the first clamping jaw and the second clamping jaw move in a direction approaching each other, thereby enabling the first clamping jaw and the second clamping jaw to clamp and fix the bottle body to prevent the bottle body from rotating with the bottle cap.

[0010] Optionally, the first transmission block includes a first transmission sleeve and a first connecting rod provided on the first transmission sleeve, the second transmission block includes a second transmission sleeve and a second connecting rod provided on the second transmission sleeve, the driving rod is provided with external threads in opposite directions from the middle position along its length direction to both ends, the first transmission sleeve and the second transmission sleeve are respectively threadedly connected to the two ends of the middle position in the length direction of the driving rod, the first clamp is connected to the first connecting rod, and the second clamp is connected to the second connecting rod.

[0011] By adopting the above technical solution, when the driving rod rotates, the first transmission sleeve and the second transmission sleeve move toward or away from each other along the length direction of the driving rod, so that the first clamping jaw and the second clamping jaw move toward or away from each other.

[0012] Optionally, the first clamping jaw is provided with a first connecting hole for accommodating the first connecting rod, and the second clamping jaw is provided with a second connecting hole for accommodating the second connecting rod.

[0013] By adopting the above technical solution, since the first clamping jaw is provided with a first connecting hole for accommodating the first connecting rod, and the second clamping jaw is provided with a second connecting hole for accommodating the second connecting rod, that is, the first connecting rod is passed through the first connecting hole, and the second connecting rod is passed through the second connecting rod, so as to realize the connection between the first connecting rod and the first clamping jaw, and the connection between the second connecting rod and the second clamping jaw. At the same time, the first clamping jaw and the second clamping jaw can be replaced according to the shape and size of the bottle body, so as to increase the flexibility of the screw cap bottle holding anti-rotation mechanism and ensure the clamping and fixing effect of the bottle body.

[0014] Optionally, a first protrusion is provided on the side of the first clamping jaw facing away from the second clamping jaw, and at least a portion of the first connecting hole is located on the first protrusion; a second protrusion is provided on the side of the second clamping jaw facing away from the first clamping jaw, and at least a portion of the second connecting hole is located on the second protrusion.

[0015] By adopting the above technical solution, since at least part of the area of ​​the first connecting hole is located on the first protrusion, the aperture of the first connecting hole can be increased to increase the diameter of the first connecting rod, thereby increasing the structural strength of the first connecting rod, so as to increase the connection stability between the first clamp and the first connecting rod, and at the same time, the thickness of the first clamp can be reduced to reduce the load on the driving structure; at least part of the area of ​​the second connecting hole is located on the second protrusion, and then the aperture of the second connecting hole can be increased to increase the diameter of the second connecting rod, thereby increasing the structural strength of the second connecting rod, so as to increase the connection stability between the second clamp and the second connecting rod, and at the same time, the thickness of the second clamp can be reduced to reduce the load on the driving structure.

[0016] Optionally, the cross-sections of the first connecting rod and the second connecting rod perpendicular to their own length directions are both polygonal, the first connecting hole is adapted to the first connecting rod, and the second connecting hole is adapted to the second connecting rod.

[0017] By adopting the above technical solution, since the cross-sections of the first connecting rod and the second connecting rod perpendicular to their own length directions are polygonal, the connection stability between the first clamp and the first connecting rod and the connection stability between the second clamp and the second connecting rod are increased, thereby avoiding the situation where the first clamp can rotate around the first connecting rod and the second clamp can rotate around the second connecting rod.

[0018] Optionally, the driving structure also includes a guide beam, which has a accommodating cavity inside and a guide groove connected to the accommodating cavity on its top, the driving rod, the first transmission sleeve and the second transmission sleeve are all located in the accommodating cavity, and both ends of the driving rod are rotatably connected to the cavity wall of the accommodating cavity, and the first connecting rod and the second connecting rod extend out of the accommodating cavity via the guide groove.

[0019] By adopting the above technical solution, since the first connecting rod and the second connecting rod extend out of the accommodating cavity through the guide groove, when the driving rod rotates, the groove wall of the guide groove can limit the first connecting rod and the second connecting rod to avoid the situation where the first connecting rod and the second connecting rod follow the rotation of the driving rod, thereby ensuring the driving efficiency of the first clamp and the second clamp.

[0020] Optionally, the driving member is a motor, and the output shaft of the motor and the driving rod are coaxially fixedly connected with bevel gears, and the two bevel gears are meshed and transmission-connected.

[0021] By adopting the above technical solution, since the driving member is a motor, and the motor and the driving rod are connected through a bevel gear transmission, the transmission efficiency between the driving member and the driving rod is improved. At the same time, the transmission stability between the driving member and the driving rod can be increased and the production cost of the screw cap bottle anti-rotation mechanism can be reduced.

[0022] Optionally, the driving member is located at the bottom of the guide beam, and the bevel gear on the driving rod is located in the middle position of the driving rod in the length direction.

[0023] By adopting the above technical solution, since the driving member is located at the bottom of the guide beam, the driving member can avoid the first clamping jaw and the second clamping jaw to ensure that the first clamping jaw and the second clamping jaw can clamp and fix the bottle body. At the same time, the bevel gear on the driving rod is arranged in the middle position in the length direction of the driving rod, so that the driving member can be hidden in the conveying mechanism to reduce the volume of the screw capping device.

[0024] Optionally, the driving structure includes a double-headed cylinder, each of the double-headed cylinders has a first telescopic end and a second telescopic end opposite to the first telescopic end, the first clamping jaw is arranged at the first telescopic end, and the second clamping jaw is arranged at the second telescopic end.

[0025] By adopting the above technical solution, since the driving structure includes a double-headed cylinder, the need to set up a transmission part is avoided, thereby simplifying the structure of the screw cap bottle holding anti-rotation mechanism and reducing the production cost of the screw cap bottle holding anti-rotation mechanism.

[0026] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0027] and a second gripping mechanism for holding a bottle in a state of rotation that engages the bottle cap when the bottle cap is screwed onto the bottle cap. When the first clamp and the second clamp collide, they form a clamping space that matches the outer surface of the bottle body, so that the first clamp and the second clamp clamp the bottle body to prevent the bottle body from rotating with the bottle cap, thereby increasing the sealing performance of the connection between the bottle cap and the bottle body; because the opposite sides of the first clamp and the second clamp are provided with rubber pads, the clamping stability of the first clamp and the second clamp on the bottle body is increased, so that the bottle body can rotate with the bottle cap, thereby further increasing the sealing performance of the connection between the bottle cap and the bottle body; because when the first clamp and the second clamp collide, they form a clamping space that matches the outer surface of the bottle body, thereby preventing the contents of the bottle from overflowing due to the large clamping force applied by the first clamp and the second clamp on the bottle body, thereby preventing the bottle from drying up, thereby ensuring production quality and increasing the cleanliness of the production environment. Especially for bottles used to hold disinfectants or hand sanitizers, which are easily deformed due to their thin wall thickness, the screw cap bottle anti-rotation mechanism in this application can greatly reduce the risk of bottle deformation.

[0028] 2. The driving structure in the present application includes a driving member, a driving rod transmission-connected to the driving member, a first transmission block threadedly connected to the driving rod, and a second transmission block threadedly connected to the driving rod. When the driving rod rotates, the first transmission block and the second transmission block move in a direction approaching or moving away from each other, the first clamp is connected to the first transmission block, and the second clamp is connected to the second transmission block. When the bottle body containing the contents moves to the bottom of the screwing mechanism under the action of the conveying mechanism, the driving member drives the driving rod, and then causes the driving rod to rotate, and the first transmission block and the second transmission block move in a direction approaching each other, so that the first clamp and the second clamp move in a direction approaching each other, so that the first clamp and the second clamp clamp clamp the bottle body and fix it to prevent the bottle body from rotating with the bottle cap.

[0029] 3. The first transmission block in the present application includes a first transmission sleeve and a first connecting rod arranged on the first transmission sleeve, and the second transmission block includes a second transmission sleeve and a second connecting rod arranged on the second transmission sleeve. The driving rod is provided with external threads in opposite directions at both ends along the middle position of its length direction. The first transmission sleeve and the second transmission sleeve are respectively threadedly connected to the two ends of the middle position of the driving rod in the length direction. The first clamp is connected to the first connecting rod, and the second clamp is connected to the second connecting rod. When the driving rod rotates, the first transmission sleeve and the second transmission sleeve move along the length direction of the driving rod toward each other or away from each other, so that the first clamp and the second clamp move toward each other or away from each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 This is a partial structural diagram of the screw cap bottle anti-rotation mechanism in this application;

[0032] Figure 2 This is a schematic structural diagram of the first clamping jaw in this application;

[0033] Figure 3 This is a schematic diagram of the structure of the screw cap bottle holding anti-rotation mechanism from another perspective in this application;

[0034] Figure 4 This is a partial structural diagram of the screw cap bottle anti-rotation mechanism in this application, mainly showing the connection method between the driving member and the driving rod.

[0035] Reference numerals:

[0036] 1. First clamping jaw; 11. Rubber pad; 12. First connecting hole; 13. First protrusion; 2. Second clamping jaw; 21. Second connecting hole; 22. Second protrusion; 3. Driving structure; 31. Driving member; 32. Driving rod; 321. Bevel gear; 33. First transmission block; 331. First transmission sleeve; 332. First connecting rod; 34. Second transmission block; 341. Second transmission sleeve; 342. Second connecting rod; 35. Guide beam; 351. Accommodating cavity; 352. Guide groove. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0038] The following description sets forth many specific details to facilitate a thorough understanding of the present application. However, the present application may also be implemented in other ways than those described herein, and therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features of each embodiment may be combined with each other unless there is a conflict.

[0039] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0040] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0042] Reference Figures 1 to 4 Disclosed is a screw cap bottle-holding anti-rotation mechanism of a screw cap device, which includes a first clamping jaw 1, a second clamping jaw 2 and a driving structure 3. The first clamping jaw 1 and the second clamping jaw 2 are respectively arranged on both sides of the conveying direction of the conveying mechanism. When the first clamping jaw 1 and the second clamping jaw 2 conflict with each other, the first clamping jaw 1 and the second clamping jaw 2 jointly form a clamping space adapted to the outer circumference of the bottle body, and rubber pads 11 are provided on the opposite sides of the first clamping jaw 1 and the second clamping jaw 2, so that the first clamping jaw 1 and the second clamping jaw 2 are in contact with the outer circumference of the bottle body through the rubber pads 11. The driving structure 3 is used for driving the first clamping jaw 1 and the second clamping jaw 2 to move toward or away from each other.

[0043] It can be understood that the first clamping jaw 1 and the second clamping jaw 2 are symmetrically arranged arc-shaped plate structures so that a closed clamping space can be formed when the two are in contact with each other.

[0044] When using the screw cap bottle anti-rotation mechanism in the present application, the driving structure 3 is installed on the conveying mechanism, and the first clamping jaw 1 and the second clamping jaw 2 are respectively arranged on both sides of the conveying direction of the conveying mechanism, and the first clamping jaw 1 and the second clamping jaw 2 are opposite to the screwing mechanism. When the bottle body is screwed with the cap, the conveying mechanism conveys the bottle body containing the contents. When the bottle body is conveyed to the bottom of the screwing mechanism, the driving structure 3 drives the first clamping jaw 1 and the second clamping jaw 2, and then the first clamping jaw 1 and the second clamping jaw 2 move in a direction close to each other, so that the first clamping jaw 1 and the second clamping jaw 2 collide with each other. Since the first clamping jaw 1 and the second clamping jaw 2 collide with each other, they form a clamping space adapted to the outer peripheral surface of the bottle body, so that the first clamping jaw 1 and the second clamping jaw 2 clamp and fix the bottle body to prevent the bottle body from rotating with the bottle cap, thereby increasing the sealing performance of the connection between the bottle cap and the bottle body.

[0045] Since the rubber pads 11 are provided on the opposite sides of the first clamping jaw 1 and the second clamping jaw 2, the clamping stability of the first clamping jaw 1 and the second clamping jaw 2 on the bottle body is increased, so that the bottle body can rotate with the bottle cap, thereby further improving the sealing performance of the connection between the bottle cap and the bottle body.

[0046] When the first clamping jaw 1 and the second clamping jaw 2 come into contact with each other, they jointly form a clamping space adapted to the outer peripheral surface of the bottle body, thereby avoiding the overflow of the contents in the bottle body due to the large clamping force exerted by the first clamping jaw 1 and the second clamping jaw 2 on the bottle body, and avoiding the occurrence of the bottle body shrinking, thereby ensuring production quality and increasing the cleanliness of the production environment.

[0047] The screw cap bottle anti-rotation mechanism in the present application is particularly suitable for bottles with smaller wall thickness, such as bottles containing disinfectants or hand soaps. It can greatly reduce the risk of bottle deformation and can also greatly increase the clamping and fixing effect of the bottle.

[0048] The present application does not specifically limit the structure of the driving structure 3, and it can adopt any one of the following embodiments:

[0049] Implementation method 1: In this implementation method, refer to Figure 1 、 Figure 3 and Figure 4 The driving structure 3 includes a driving member 31, a driving rod 32 transmission-connected to the driving member 31, a first transmission block 33 threadedly connected to the driving rod 32, and a second transmission block 34 threadedly connected to the driving rod 32. When the driving rod 32 rotates, the first transmission block 33 and the second transmission block 34 move in a direction approaching or moving away from each other, the first clamping jaw 1 is connected to the first transmission block 33, and the second clamping jaw 2 is connected to the second transmission block 34.

[0050] Specifically, when the bottle containing the contents moves to the bottom of the screwing mechanism under the action of the conveying mechanism, the driving member 31 drives the driving rod 32, thereby causing the driving rod 32 to rotate, and the first transmission block 33 and the second transmission block 34 move toward each other, so that the first clamping jaw 1 and the second clamping jaw 2 move toward each other, thereby allowing the first clamping jaw 1 and the second clamping jaw 2 to clamp and fix the bottle body to prevent the bottle body from rotating with the bottle cap.

[0051] Further, refer to Figure 1 、 Figure 3 and Figure 4The first transmission block 33 includes a first transmission sleeve 331 and a first connecting rod 332 provided on the first transmission sleeve 331. The second transmission block 34 includes a second transmission sleeve 341 and a second connecting rod 342 provided on the second transmission sleeve 341. The driving rod 32 is provided with external threads in opposite directions at both ends along the middle position of its length direction. The first transmission sleeve 331 and the second transmission sleeve 341 are respectively threadedly connected to the two ends of the middle position of the length direction of the driving rod 32. The first clamping jaw 1 is connected to the first connecting rod 332, and the second clamping jaw 2 is connected to the second connecting rod 342.

[0052] Specifically, when the driving rod 32 rotates, the first transmission sleeve 331 and the second transmission sleeve 341 move toward or away from each other along the length direction of the driving rod 32, so that the first clamping jaw 1 and the second clamping jaw 2 move toward or away from each other.

[0053] The present application does not specifically limit the connection method between the first clamping jaw 1 and the first connecting rod 332 and the connection method between the second clamping jaw 2 and the second connecting rod 342. Figures 1 to 4 The first clamping jaw 1 is provided with a first connecting hole 12 for accommodating the first connecting rod 332, and the second clamping jaw 2 is provided with a second connecting hole 21 for accommodating the second connecting rod 342. That is to say, the first connecting rod 332 is passed through the first connecting hole 12, and the second connecting rod 342 is passed through the second connecting rod 342, that is, the first clamping jaw 1 is connected to the first connecting rod 332 by a sleeve arrangement, and the second clamping jaw 2 is connected to the second connecting rod 342 by a sleeve arrangement, so as to realize the connection between the first connecting rod 332 and the first clamping jaw 1, and the connection between the second connecting rod 342 and the second clamping jaw 2. At the same time, the first clamping jaw 1 and the second clamping jaw 2 can be replaced according to the shape and size of the bottle body to increase the flexibility of the screw cap bottle anti-rotation mechanism and ensure the clamping and fixing effect of the bottle body.

[0054] Further, refer to Figures 1 to 4 A first protrusion 13 is provided on the side of the first clamping jaw 1 facing away from the second clamping jaw 2, and at least a part of the area of ​​the first connecting hole 12 is located on the first protrusion 13, which can increase the aperture of the first connecting hole 12 to increase the diameter of the first connecting rod 332, thereby increasing the structural strength of the first connecting rod 332, and increasing the connection stability between the first clamping jaw 1 and the first connecting rod 332, while also reducing the thickness of the first clamping jaw 1 to reduce the load of the driving structure 3; a second protrusion 22 is provided on the side of the second clamping jaw 2 facing away from the first clamping jaw 1, and at least a part of the area of ​​the second connecting hole 21 is located on the second protrusion 22, which can increase the aperture of the second connecting hole 21 to increase the diameter of the second connecting rod 342, thereby increasing the structural strength of the second connecting rod 342, and increasing the connection stability between the second clamping jaw 2 and the second connecting rod 342, and also reducing the thickness of the second clamping jaw 2 to reduce the load of the driving structure 3.

[0055] Preferably, the first protrusion 13 and the second protrusion 22 are both block-shaped structures.

[0056] Further, refer to Figures 1 to 4 The cross-sections of the first connecting rod 332 and the second connecting rod 342 perpendicular to their own length directions are both polygonal, the first connecting hole 12 is adapted to the first connecting rod 332, and the second connecting hole 21 is adapted to the second connecting rod 342, thereby increasing the connection stability between the first clamping jaw 1 and the first connecting rod 332 and the connection stability between the second clamping jaw 2 and the second connecting rod 342, so as to avoid the situation where the first clamping jaw 1 can rotate around the first connecting rod 332 and the second clamping jaw 2 can rotate around the second connecting rod 342.

[0057] Preferably, the cross-sections of the first connecting rod 332 and the second connecting rod 342 perpendicular to their own length directions are both square. Of course, in other embodiments, the cross-sections of the first connecting rod 332 and the second connecting rod 342 perpendicular to their own length directions can also be other polygons.

[0058] In other embodiments, the first clamping jaw 1 can also be fixedly connected to the first connecting rod 332, and the second clamping jaw 2 can be fixedly connected to the second connecting rod 342; or, the first clamping jaw 1 can be detachably connected to the first connecting rod 332 through a clamping structure, and the second clamping jaw 2 can also be detachably connected to the second connecting rod 342 through a clamping structure.

[0059] Further, refer to Figure 1 、 Figure 3 and Figure 4 The driving structure 3 also includes a guide beam 35, which has an accommodating cavity 351 inside and a guide groove 352 connected to the accommodating cavity 351 on its top. The driving rod 32, the first transmission sleeve 331 and the second transmission sleeve 341 are all located in the accommodating cavity 351, and both ends of the driving rod 32 are rotatably connected to the cavity wall of the accommodating cavity 351, and the first connecting rod 332 and the second connecting rod 342 extend out of the accommodating cavity 351 through the guide groove 352.

[0060] It can be understood that the end of the first connecting rod 332 close to the first connecting sleeve is located in the accommodating cavity 351, and the end of the second connecting rod 342 close to the second connecting sleeve is also located in the accommodating cavity 351. As a result, when the driving rod 32 rotates, the groove wall of the guide groove 352 can limit the first connecting rod 332 and the second connecting rod 342 to avoid the first connecting rod 332 and the second connecting rod 342 following the rotation of the driving rod 32, so as to ensure the driving efficiency of the first clamp 1 and the second clamp 2.

[0061] The present application does not make any specific limitation on the structure of the driving member 31. Preferably, the driving member 31 is a motor, and the output shaft of the motor and the driving rod 32 are coaxially fixedly connected with a bevel gear 321. The two bevel gears 321 are engaged in a transmission connection, thereby improving the transmission efficiency between the driving member 31 and the driving rod 32. At the same time, it can also increase the transmission stability between the driving member 31 and the driving rod 32 and reduce the production cost of the screw cap bottle anti-rotation mechanism.

[0062] Specifically, the motor is fixedly connected to the conveying mechanism to ensure normal operation of the motor.

[0063] In other implementation examples, the driving member 31 may also be a pneumatic motor.

[0064] Better, refer to Figure 4 The driving member 31 is located at the bottom of the guide beam 35, so that the driving member 31 can avoid the first clamping jaw 1 and the second clamping jaw 2 to ensure that the first clamping jaw 1 and the second clamping jaw 2 can clamp and fix the bottle body. The bevel gear 321 on the driving rod 32 is located in the middle position of the length direction of the driving rod 32, so that the driving member 31 can be hidden in the conveying mechanism to reduce the volume of the screw capping device.

[0065] Embodiment 2. In this embodiment, the driving structure 3 includes a double-headed cylinder, each of which has a first telescopic end and a second telescopic end opposite to the first telescopic top end. The first clamping jaw 1 is provided at the first telescopic end, and the second clamping jaw 2 is provided at the second telescopic end, thereby avoiding the need to set up a transmission part, thereby simplifying the structure of the screw cap bottle holding anti-rotation mechanism and reducing the production cost of the screw cap bottle holding anti-rotation mechanism.

[0066] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0067] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0068] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A screw capping bottle anti-rotation mechanism for a screw capping device, characterized in that: The invention comprises a first clamping jaw (1), a second clamping jaw (2) and a driving structure (3), wherein the first clamping jaw (1) and the second clamping jaw (2) are respectively arranged on both sides of the conveying direction of the conveying mechanism, and when the first clamping jaw (1) and the second clamping jaw (2) collide with each other, the first clamping jaw (1) and the second clamping jaw (2) jointly form a clamping space adapted to the outer peripheral surface of the bottle body, and rubber pads (11) are provided on the opposite sides of the first clamping jaw (1) and the second clamping jaw (2) so that the first clamping jaw (1) and the second clamping jaw (2) are in contact with the outer peripheral surface of the bottle body through the rubber pads (11), and the driving structure (3) is used for driving the first clamping jaw (1) and the second clamping jaw (2) to move in a direction of approaching or moving away from each other.

2. The anti-rotation mechanism for a screw capping device according to claim 1, characterized in that: The driving structure (3) comprises a driving member (31), a driving rod (32) drivingly connected to the driving member (31), a first transmission block (33) threadedly connected to the driving rod (32), and a second transmission block (34) threadedly connected to the driving rod (32); when the driving rod (32) rotates, the first transmission block (33) and the second transmission block (34) move in a direction of approaching or moving away from each other, the first clamping jaw (1) is connected to the first transmission block (33), and the second clamping jaw (2) is connected to the second transmission block (34).

3. The anti-rotation mechanism for a screw capping device according to claim 2, characterized in that: The first transmission block (33) includes a first transmission sleeve (331) and a first connecting rod (332) provided on the first transmission sleeve (331); the second transmission block (34) includes a second transmission sleeve (341) and a second connecting rod (342) provided on the second transmission sleeve (341); the driving rod (32) is provided with external threads in opposite directions from the middle position along the length direction to both ends; the first transmission sleeve (331) and the second transmission sleeve (341) are respectively threadedly connected to the two ends of the middle position of the length direction of the driving rod (32); the first clamping jaw (1) is connected to the first connecting rod (332), and the second clamping jaw (2) is connected to the second connecting rod (342).

4. The anti-rotation mechanism for a screw capping device according to claim 3, characterized in that: The first clamping jaw (1) is provided with a first connecting hole (12) for accommodating the first connecting rod (332), and the second clamping jaw (2) is provided with a second connecting hole (21) for accommodating the second connecting rod (342).

5. The anti-rotation mechanism for the screw capping device according to claim 4, characterized in that: A first protrusion (13) is provided on a side of the first clamping jaw (1) facing away from the second clamping jaw (2), and at least a portion of the first connecting hole (12) is located on the first protrusion (13); a second protrusion (22) is provided on a side of the second clamping jaw (2) facing away from the first clamping jaw (1), and at least a portion of the second connecting hole (21) is located on the second protrusion (22).

6. The anti-rotation mechanism for a screw capping device according to claim 4, characterized in that: The cross-sections of the first connecting rod (332) and the second connecting rod (342) perpendicular to their own length directions are both polygonal; the first connecting hole (12) is adapted to the first connecting rod (332), and the second connecting hole (21) is adapted to the second connecting rod (342).

7. The anti-rotation mechanism for a screw capping device according to claim 3, characterized in that: The driving structure (3) further includes a guide beam (35), the guide beam (35) having an interior with a receiving cavity (351) and a top thereof provided with a guide groove (352) communicating with the receiving cavity (351), the driving rod (32), the first transmission sleeve (331) and the second transmission sleeve (341) are all located in the receiving cavity (351), and both ends of the driving rod (32) are rotatably connected to the cavity wall of the receiving cavity (351), and the first connecting rod (332) and the second connecting rod (342) extend out of the receiving cavity (351) via the guide groove (352).

8. The anti-rotation mechanism for the screw capping device according to claim 7, characterized in that: The driving member (31) is a motor, and the output shaft of the motor and the driving rod (32) are coaxially fixedly connected to a bevel gear (321), and the two bevel gears (321) are meshed and transmission-connected.

9. The anti-rotation mechanism for a screw capping device according to claim 8, characterized in that: The driving member (31) is located at the bottom of the guide beam (35), and the bevel gear (321) on the driving rod (32) is located at a middle position in the length direction of the driving rod (32).

10. The anti-rotation mechanism for a screw capping device according to claim 1, characterized in that: The driving structure (3) comprises a double-headed cylinder, each of the double-headed cylinders having a first telescopic end and a second telescopic end opposite to the first telescopic end, the first clamping jaw (1) being arranged at the first telescopic end, and the second clamping jaw (2) being arranged at the second telescopic end.

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