Bottle clamping device of cap screwing machine

Abstract

The utility model belongs to the technical field of beverage packaging equipment, and discloses a bottle clamping device of a cap screwing machine. The bottle clamping device of the cap screwing machine comprises a mounting frame, a clamp opening guide rail and a plurality of clamping units arranged on the mounting frame, the mounting frame is used for being connected with a rotating mechanism of the cap screwing machine, the rotating mechanism can drive the mounting frame to rotate, the clamp opening guide rail is arranged on a cap screwing machine body, and each clamping unit comprises a clamping assembly, a first rotating shaft, a driving assembly and a rotation stopping blocking head. The clamping assembly comprises a first clamping arm and a second clamping arm; the first rotating shaft is rotationally arranged on the mounting frame, the first clamping arm is arranged on the first rotating shaft, and the first rotating shaft rotates to drive the first clamping arm and the second clamping arm to be close to or away from each other; the driving assembly comprises a connecting swing arm and an extension spring, and the connecting swing arm can swing under the action of the clamp opening guide rail and the extension spring. According to the bottle clamping device of the cap screwing machine, bottles with bottle openings of different sizes can be clamped stably, and the efficiency of cap screwing operation is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of beverage packaging equipment, in particular to a bottle clamping device for a capping machine. Background Art

[0002] In a beverage filling production line, a bottle clamping mechanism on a capping machine is usually used to clamp and fix the beverage bottles after filling, and a transmission track is used to drive the beverage bottles on the production line to be capped and packaged in sequence.

[0003] The clamping claws of the existing bottle clamping mechanism are fixed structures and can only clamp bottles of the same specifications and sizes. When filling bottles of different specifications and sizes, the bottle clamping mechanism needs to be replaced so that the clamping claws can stably and reliably clamp the bottles; in this way, the efficiency of beverage capping will be reduced, and the closed sterile environment will be damaged when the bottle clamping mechanism is replaced. The sterile environment needs to be re-established before the packaging can continue, which greatly affects the production efficiency. Therefore, with the continuous development of the beverage market and the need to improve production efficiency, the existing bottle clamping mechanism can no longer meet the current beverage production needs. Utility Model Content

[0004] The utility model aims to provide a bottle clamping device for a capping machine, which can clamp bottles with bottle openings of different sizes and improve the stability of bottle clamping.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a bottle clamping device for a capping machine, comprising a mounting frame, a clamping guide rail and a plurality of clamping units arranged on the mounting frame, wherein the mounting frame is used to be connected with a rotating mechanism of the capping machine, and the rotating mechanism can drive the mounting frame to rotate, the clamping guide rail is arranged on the capping machine body, and the clamping unit comprises:

[0007] A clamping assembly, the clamping assembly comprising a first clamping arm and a second clamping arm that are rotatably engaged;

[0008] a first rotating shaft, wherein the first rotating shaft is rotatably arranged on the mounting frame, and the first clamping arm is arranged on the first rotating shaft, and the first rotating shaft can drive the first clamping arm and the second clamping arm to approach each other to clamp the bottle mouth when the first rotating shaft rotates forward, and can drive the first clamping arm and the second clamping arm to move away from each other when the first rotating shaft rotates reversely, so that the distance between the first clamping arm and the second clamping arm is greater than the outer diameter of the bottle mouth;

[0009] A driving assembly, wherein the driving assembly comprises a connecting swing arm and a tension spring, wherein one end of the connecting swing arm is fixedly connected to the first rotating shaft, and the rotation of the mounting frame can drive the other end of the connecting swing arm to abut against the clamping guide rail, and the clamping guide rail can apply a force to the end of the connecting swing arm to make the connecting swing arm swing in the opposite direction, and the tension spring is arranged between the connecting swing arm and the mounting frame, and the tension spring is configured to make the first rotating shaft always have a positive swinging motion tendency;

[0010] A stopper head is arranged on the mounting frame, and the stopper head abuts against the bottle mouth clamped between the first clamping arm and the second clamping arm along the radial direction of the bottle mouth.

[0011] Preferably, the bottle clamping device of the capping machine further comprises a second rotating shaft, the second rotating shaft is rotatably disposed on the mounting frame, and the second clamping arm is fixed on the second rotating shaft.

[0012] Preferably, the first clamping arm has a first fixed end and a first clamping end, the second clamping arm has a second fixed end and a second clamping end, the first fixed end is arranged on the first rotating shaft, the second fixed end is arranged on the second rotating shaft, the first fixed end and the second fixed end are provided with mutually meshing gear teeth, and the first clamping end and the second clamping end are used to clamp the bottle mouth.

[0013] Preferably, the first clamping end and the second clamping end are provided with opposite arc-shaped grooves.

[0014] Preferably, the side of the clamping guide rail close to the connecting swing arm has an inner concave surface and an outer convex surface;

[0015] The rotating mechanism can drive the first rotating shaft to make a circular motion with the capping machine body as the center through the mounting frame, and the end of the connecting swing arm can abut against the clamping guide rail along the radial direction of the trajectory of the circular motion of the first rotating shaft.

[0016] Preferably, the driving assembly further comprises a roller, and the roller is rotatably arranged on the connecting swing arm, and the connecting swing arm rolls against the clamping guide rail via the roller.

[0017] Preferably, the connecting swing arm comprises a positioning arm, a follower arm and a connecting bolt, the roller is rotatably arranged on the positioning arm, and the follower arm is connected to the first rotating shaft;

[0018] The positioning arm is provided with a vertical connecting through hole, the connecting bolt passes through the connecting through hole and is threadedly connected to the follower arm, the inner diameter of the connecting through hole is larger than the outer diameter of the screw rod of the connecting bolt, and the head of the connecting bolt rests on the positioning arm.

[0019] Preferably, the connecting swing arm further comprises an adjusting bolt, the adjusting bolt is threadedly connected to the positioning arm, and the end of the adjusting bolt extending out of the positioning arm abuts against the follower arm along the swinging direction of the connecting swing arm.

[0020] Preferably, a bushing is vertically arranged on the mounting frame, and the first rotating shaft is rotationally matched with the mounting frame through the bushing.

[0021] Preferably, the mounting frame comprises an upper mounting plate and a lower mounting plate, and the upper mounting plate and the lower mounting plate are fixed on the rotating mechanism of the capping machine along a vertical interval, and one end of the first rotating shaft close to the clamping assembly is rotatably arranged on the upper mounting plate, and one end of the first rotating shaft close to the driving assembly is rotatably arranged on the lower mounting plate.

[0022] The beneficial effects of the utility model are:

[0023] The bottle clamping device of the capping machine provided by the utility model can approach the bottle mouth from both sides and clamp the bottle mouth by rotating the matched first clamping arm and the second clamping arm to approach each other. The utility model has a simple structure and can be suitable for bottles with different sizes of bottle mouths. Since the first clamping arm is arranged on the first rotating shaft, the first rotating shaft is fixedly connected to one end of the connecting swing arm, so the swinging of the connecting swing arm can drive the first rotating shaft to rotate, and then drive the first clamping arm and the second clamping arm to approach or move away from each other; since the other end of the connecting swing arm can abut against the clamping guide rail, the clamping guide rail is used to apply a force to the connecting swing arm to make the connecting swing arm swing in the opposite direction, so that the connecting swing arm can drive the first rotating shaft to reverse to open the clamping assembly, so that the bottle can be smoothly placed between the first clamping arm and the second clamping arm; since the tension spring between the connecting swing arm and the mounting frame can apply an elastic force to the connecting swing arm to make the connecting swing arm swing forward, the connecting swing arm can drive the first The rotating shaft rotates forward to clamp the bottle mouth, so that the clamping and loosening of the bottle can be completed without manual operation of the staff. At the same time, the clamping assembly can be suitable for bottles with bottle mouths of different sizes, and there is no need to replace the clamping assembly, which greatly improves the production efficiency; because a stop stop head is provided on the mounting frame, the stop stop head abuts against the bottle mouth in the radial direction of the bottle mouth, so that the first clamping arm and the second clamping arm can be cooperated to further fix the bottle, and prevent the bottle from rotating when the capping machine subsequently screws the cap on the bottle mouth, thereby further improving the stability of the bottle clamping device of the capping machine; because the rotating mechanism can drive the mounting frame to rotate, and then the mounting frame can simultaneously drive the connecting swing arms of each clamping unit to pass through the clamping guide rail in turn and abut against the clamping guide rail respectively, and the clamping guide rail applies a force to each connecting swing arm in turn to open the clamping assembly, thereby forming an assembly line for the capping operation, which greatly improves the efficiency of the capping operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a clamping unit provided in a specific embodiment of the utility model;

[0025] Figure 2 It is a top view of a clamping unit provided in a specific embodiment of the utility model;

[0026] Figure 3 It is a cross-sectional view of the installation of the mounting frame, the clamping guide rail and the clamping unit provided in the specific implementation mode of the utility model;

[0027] Figure 4 It is a top view of the assembly of the clamping unit and the clamping guide rail provided in a specific embodiment of the utility model;

[0028] Figure 5 It is an exploded view of a drive assembly provided in a specific embodiment of the utility model;

[0029] Figure 6It is a cross-sectional view of the installation of the drive assembly on the first rotating shaft provided by the specific implementation mode of the utility model.

[0030] In the figure:

[0031] 100-rotating mechanism;

[0032] 200-capping machine body;

[0033] 1-clamping assembly; 11-first clamping arm; 12-second clamping arm;

[0034] 2-mounting frame; 21-upper mounting plate; 22-lower mounting plate;

[0035] 3- first rotating shaft;

[0036] 4- second rotating shaft;

[0037] 5-driving assembly; 51-roller; 52-connecting swing arm; 521-positioning arm; 5211-connecting through hole; 522-follower arm; 523-connecting bolt; 524-adjusting bolt; 53-tension spring;

[0038] 6- anti-rotation stopper;

[0039] 7-opening guide rail; 71-inner recessed surface; 72-outer convex surface. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, the terms "upper", "lower", "right", "left" 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" and "second" are only used to distinguish in the description and have no special meaning.

[0044] like Figures 1 to 3 As shown, the utility model provides a bottle clamping device for a capping machine, which comprises a mounting frame 2, a clamping guide rail 7 and a plurality of clamping units arranged on the mounting frame 2, the mounting frame 2 is used to be connected with a rotating mechanism 100 of the capping machine, the rotating mechanism 100 can drive the mounting frame 2 to rotate, the clamping guide rail 7 is arranged on a capping machine body 200, the clamping unit comprises a clamping assembly 1, a first rotating shaft 3, a driving assembly 5 and a stopper 6, the clamping assembly 1 comprises a first clamping arm 11 and a second clamping arm 12 that are rotatably matched, the first clamping arm 11 is arranged on the first rotating shaft 3, the forward rotation of the first rotating shaft 3 can drive the first clamping arm 11 and the second clamping arm 12 to approach each other to clamp the bottle mouth, and the reverse rotation of the first rotating shaft 3 can drive the first clamping arm 11 and the second clamping arm 12 to move away from each other, so that the distance between the first clamping arm 11 and the second clamping arm 12 is greater than the outer diameter of the bottle mouth. In this embodiment, the bottle mouth can be clamped or disengaged by rotating the first clamping arm 11 and the second clamping arm 12 to move closer to or away from each other, thereby achieving clamping and releasing of the bottle. The structure is simple, the operation is convenient, and it can be applied to bottles with different sizes of bottle mouths.

[0045] The mounting frame 2 is used to be connected with the rotating mechanism 100 of the capping machine, and the rotating mechanism 100 drives the mounting frame 2 to rotate; the first rotating shaft 3 is rotatably arranged on the mounting frame 2; the clamping guide rail 7 is arranged on the capping machine body 200; the driving component 5 includes a connecting swing arm 52 and a tension spring 53, one end of the connecting swing arm 52 is fixedly connected to the first rotating shaft 3, and the rotation of the mounting frame 2 can drive the other end of the connecting swing arm 52 to abut against the clamping guide rail 7, and the clamping guide rail 7 can apply a force to the connecting swing arm 52 to make the connecting swing arm 52 swing in the opposite direction, and the tension spring 53 is arranged between the connecting swing arm 52 and the mounting frame 2, and the tension spring 53 is configured to make the first rotating shaft 3 always have a positive swinging movement tendency. In this embodiment, since the first clamping arm 11 is arranged on the first rotating shaft 3, and the first rotating shaft 3 is fixedly connected to one end of the connecting swing arm 52, the swinging of the connecting swing arm 52 can drive the first rotating shaft 3 to rotate; since the mounting frame 2 can drive the other end of the connecting swing arm 52 to abut against the clamping guide rail 7 through the first rotating shaft 3, the clamping guide rail 7 can apply a force to the end of the connecting swing arm 52 to make the connecting swing arm 52 swing in the opposite direction with the first rotating shaft 3 as the axis, the connecting swing arm 52 can drive the first rotating shaft 3 to reverse to open the clamping assembly 1, and at this time, the distance between the first clamping arm 11 and the second clamping arm 12 is greater than the outer distance of the bottle mouth diameter, so that the bottle can be smoothly placed between the first clamping arm 11 and the second clamping arm 12 or the bottle after the cap is screwed can be released; because the tension spring 53 between the connecting swing arm 52 and the mounting frame 2 can apply elastic force to the connecting swing arm 52, so that the connecting swing arm 52 can swing forward with the first rotating shaft 3 as the axis, the connecting swing arm 52 can drive the first rotating shaft 3 to rotate forward to clamp the bottle mouth, so that the bottle can be clamped and released without manual operation of the staff, and at the same time, the clamping assembly 1 can be suitable for bottles with different sizes of bottle mouths, and there is no need to replace the clamping assembly 1, thereby greatly improving the production efficiency. Specifically, the mounting frame 2 is arranged in a ring around the capping machine body 200 on the rotating mechanism 100, and a plurality of clamping units are evenly arranged on the mounting frame 2. The rotating mechanism 100 can simultaneously drive the connecting swing arms 52 of each clamping unit through the mounting frame 2 to pass through the clamping guide rail 7 in turn and abut against the clamping guide rail 7 respectively, and the clamping guide rail 7 applies force to each connecting swing arm 52 in turn to open the clamping assembly 1; by arranging a plurality of clamping units on the mounting frame 2, the rotating mechanism 100 can simultaneously drive a plurality of bottles to rotate through the mounting frame 2, thereby forming an assembly line for the capping operation, which greatly improves the efficiency of the capping operation.

[0046] The stopper head 6 is arranged on the mounting frame 2, and the stopper head 6 abuts against the side of the bottle mouth clamped between the first clamping arm 11 and the second clamping arm 12 along the radial direction of the bottle mouth. In this embodiment, since the stopper head 6 is arranged on the mounting frame 2, the stopper head 6 abuts against the bottle mouth along the radial direction of the bottle mouth, so that the first clamping arm 11 and the second clamping arm 12 can be cooperated to further fix the bottle, and the bottle is prevented from rotating when the capping machine is subsequently screwing the cap onto the bottle mouth, thereby further improving the stability of the bottle clamping device of the capping machine on the bottle.

[0047] Furthermore, if Figure 1 and Figure 3 As shown, the bottle clamping device of the capping machine further includes a second rotating shaft 4, which is rotatably disposed on the mounting frame 2, and the second clamping arm 12 is fixed on the second rotating shaft 4. In this embodiment, the second clamping arm 12 is rotatably connected to the mounting frame 2 through the second rotating shaft 4, thereby improving the stability and clamping strength of the second clamping arm 12 during the rotation process.

[0048] Specifically, Figure 1 and Figure 2 As shown, the first clamping arm 11 has a first fixed end and a first clamping end, the second clamping arm 12 has a second fixed end and a second clamping end, the first fixed end is arranged on the first rotating shaft 3, the second fixed end is arranged on the second rotating shaft 4, the first fixed end and the second fixed end are provided with mutually meshing gear teeth, and the first clamping end and the second clamping end are used to clamp the bottle mouth. In this embodiment, the first fixed end and the second fixed end are respectively fixed to the first rotating shaft 3 and the second rotating shaft 4 by bolts, and the first rotating shaft 3 rotates to drive the first clamping arm 11 to rotate; the first fixed end and the second fixed end are provided with mutually meshing gear teeth, so that when the first clamping arm 11 rotates, it can transmit torque to the second fixed end, thereby driving the second clamping arm 12 to rotate synchronously, so as to clamp the bottle mouth from both ends of the bottle mouth, thereby ensuring the firmness and stability of the bottle clamping.

[0049] Specifically, Figure 2 As shown, the first clamping end and the second clamping end are provided with opposite arc grooves. In this embodiment, the arc grooves can better fit the shape of the bottle mouth, further improving the stability of clamping.

[0050] Furthermore, if Figure 3 and Figure 4As shown, the side of the opening and clamping guide rail 7 close to the connecting swing arm 52 has an inner recessed surface 71 and an outer convex surface 72; the rotating mechanism 100 can drive the first rotating shaft 3 to make a circular motion with the capping machine body 200 as the center through the mounting frame 2, and the end of the connecting swing arm 52 can abut against the opening and clamping guide rail 7 along the radial direction of the trajectory of the circular motion of the first rotating shaft 3. In this embodiment, the rotating mechanism 100 drives the mounting frame 2 to rotate. Since the first rotating shaft 3 is arranged on the mounting frame 2, and the bottle is fixed on the first rotating shaft 3 through the clamping assembly 1, and the driving assembly 5 is also arranged on the first rotating shaft 3, the rotation of the mounting frame 2 can drive the bottle and the connecting swing arm 52 to make a circular motion with the capping machine body 200 as the center; the opening and clamping guide rail 7 is arranged in an arc shape between the trajectory of the circular motion of the capping machine body 200 and the connecting swing arm 52; specifically, a tension spring 53 is arranged between the connecting swing arm 52 and the mounting frame 2, and the tension spring 53 is used to extend the connecting swing arm 52 to the mounting frame 2. 52 applies an elastic force close to the clamping guide rail 7 to make the connecting swing arm 52 abut against the clamping guide rail 7; the distance between the outer convex surface 72 and the connecting swing arm 52 is smaller than that between the inner concave surface 71 and the connecting swing arm 52; as the mounting frame 2 rotates, when the end of the connecting swing arm 52 moves from the inner concave surface 71 of the clamping guide rail 7 to the outer convex surface 72, the end of the connecting swing arm 52 abutting against the clamping guide rail 7 is squeezed by the outer convex surface 72 and moves radially away from the capping machine body 200. At this time, the connecting swing arm 52 swings in the opposite direction with the first rotating shaft 3 as the axis, thereby driving the first rotating shaft 3 to reverse, and the first clamping arm 52 is rotated. 11 and the second clamping arm 12 are opened and the distance between the first clamping end and the second clamping end is greater than the outer diameter of the bottle mouth, and the bottle that has completed the capping operation and is originally clamped in the first clamping end and the second clamping end is released to the bottle delivery device and transported out of the capping operation assembly line; when the end of the connecting swing arm 52 moves from the outer convex surface 72 of the clamping guide rail 7 to the inner concave surface 71, the end of the connecting swing arm 52 that abuts against the clamping guide rail 7 will move radially toward the capping machine body 200 under the elastic force of the tension spring 53. At this time, the connecting swing arm 52 moves in a positive direction with the first rotating shaft 3 as the axis. The first clamping arm 11 and the second clamping arm 12 clamp the bottle mouth from both sides of the bottle mouth, so as to clamp the uncapped bottle fed by the bottle feeding conveying device. Then, as the mounting frame 2 continues to rotate, the uncapped bottle is driven to the capping head of the capping machine for capping operation. Subsequently, the bottle that has completed the capping operation will be driven to the outer convex surface 72 of the clamping guide rail 7 again, and will be released as the connecting swing arm 52 swings in the opposite direction. This cycle is repeated to complete the capping and packaging operation of the bottle, and a clamping-capping-relaxing operation line is formed.

[0051] Specifically, Figure 1 and Figure 4As shown, the driving assembly 5 further includes a roller 51, which is rotatably arranged on the connecting swing arm 52, and the connecting swing arm 52 rolls against the clamping guide rail 7 through the roller 51. In this embodiment, the roller 51 is rotatably arranged at the end of the connecting swing arm 52 through a pin shaft, and the rolling cooperation between the roller 51 and the clamping guide rail 7 greatly reduces the sliding friction between the connecting swing arm 52 and the clamping guide rail 7, thereby reducing wear and loss and extending the service life of the bottle clamping device of the capping machine.

[0052] Specifically, Figure 1 , Figure 5 as well as Figure 6 As shown, the connecting swing arm 52 includes a positioning arm 521, a follower arm 522 and a connecting bolt 523. The roller 51 is rotatably set on the positioning arm 521, and the follower arm 522 is connected to the first rotating shaft 3. A vertical connecting through hole 5211 is opened on the positioning arm 521, and the connecting bolt 523 passes through the connecting through hole 5211 and is threadedly connected to the follower arm 522. The inner diameter of the connecting through hole 5211 is larger than the outer diameter of the screw of the connecting bolt 523, and the head of the connecting bolt 523 rests on the positioning arm 521. In this embodiment, the connecting bolt 523 passes through the connecting through hole 5211 and is threadedly connected to the follower arm 522, and the head of the connecting bolt 523 abuts against the positioning arm 521, thereby fixing the positioning arm 521 on the follower arm 522; since the inner diameter of the connecting through hole 5211 is larger than the outer diameter of the screw rod of the connecting bolt 523, the staff can reversely screw the connecting bolt 523 to disengage the head from the abutment against the positioning arm 521, and then adjust the horizontal position of the positioning arm 521 relative to the follower arm 522, thereby eliminating the influence of assembly errors and long-term wear between the first clamping arm 11, the first rotating shaft 3 and the driving assembly 5, and avoiding the inability to effectively clamp or loosen the bottle mouth.

[0053] Specifically, Figure 1 , Figure 5 as well as Figure 6As shown, the connecting swing arm 52 further includes an adjusting bolt 524, which is threadedly connected to the positioning arm 521, and the end of the adjusting bolt 524 extending out of the positioning arm 521 abuts against the follower arm 522 along the swing direction of the connecting swing arm 52. In this embodiment, the end of the adjusting bolt 524 abuts against the follower arm 522 along the swing direction of the connecting swing arm 52. When it is necessary to adjust the relative installation position between the follower arm 522 and the positioning arm 521, the staff first reversely screws the connecting bolt 523 to make the head of the connecting bolt 523 separate from the abutment with the positioning arm 521, and then screws the adjusting bolt 524 forwardly or reversely according to the adjustment needs. The relative position between the follower arm 522 and the positioning arm 521 is adjusted by the abutment between the end of the adjusting bolt 524 and the follower arm 522. Compared with directly manually moving the horizontal position of the positioning arm 521, the use of the adjusting bolt 524 improves the adjustment accuracy, greatly enhancing the practicality of the bottle clamping device of the capping machine.

[0054] Furthermore, a bushing is vertically arranged on the mounting frame 2, and the first rotating shaft 3 is rotatably matched with the mounting frame 2 through the bushing. Specifically, the first rotating shaft 3 and the second rotating shaft 4 are rotatably matched with the mounting frame 2 through the bushing, thereby reducing the friction between the first rotating shaft 3, the second rotating shaft 4 and the mounting frame 2.

[0055] Furthermore, if Figure 3 As shown, the mounting frame 2 includes an upper mounting plate 21 and a lower mounting plate 22, which are fixed on the rotating mechanism 100 of the capping machine along a vertical interval, and one end of the first rotating shaft 3 close to the clamping assembly 1 is rotatably arranged on the upper mounting plate 21, and one end of the first rotating shaft 3 close to the driving assembly 5 is rotatably arranged on the lower mounting plate 22. Specifically, both ends of the first rotating shaft 3 are rotatably arranged on the upper mounting plate 21 and the lower mounting plate 22, respectively, and both ends of the second rotating shaft 4 are also rotatably arranged on the upper mounting plate 21 and the lower mounting plate 22, respectively, thereby greatly improving the stability of the installation of the first rotating shaft 3 and the second rotating shaft 4.

[0056] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Bottle clamping device for capping machine, characterized in that: The invention comprises a mounting frame (2), a clamping guide rail (7) and a plurality of clamping units arranged on the mounting frame (2); the mounting frame (2) is used to be connected to a rotating mechanism (100) of a capping machine; the rotating mechanism (100) can drive the mounting frame (2) to rotate; the clamping guide rail (7) is arranged on a capping machine body (200); and the clamping units comprise: A clamping assembly (1), comprising a first clamping arm (11) and a second clamping arm (12) that are rotatably matched; a first rotating shaft (3), the first rotating shaft (3) being rotatably arranged on the mounting frame (2), the first clamping arm (11) being arranged on the first rotating shaft (3), the first rotating shaft (3) being able to drive the first clamping arm (11) and the second clamping arm (12) to approach each other so as to clamp the bottle mouth when the first rotating shaft (3) rotates forward, and being able to drive the first clamping arm (11) and the second clamping arm (12) to move away from each other when the first rotating shaft (3) rotates reversely, so that the distance between the first clamping arm (11) and the second clamping arm (12) is greater than the outer diameter of the bottle mouth; A driving assembly (5), the driving assembly (5) comprising a connecting swing arm (52) and a tension spring (53), one end of the connecting swing arm (52) being fixedly connected to the first rotating shaft (3), the rotation of the mounting frame (2) being able to drive the other end of the connecting swing arm (52) to abut against the clamping guide rail (7), the clamping guide rail (7) being able to apply a force to the end of the connecting swing arm (52) so as to make the connecting swing arm (52) swing in the reverse direction, the tension spring (53) being arranged between the connecting swing arm (52) and the mounting frame (2), the tension spring (53) being configured to make the first rotating shaft (3) always have a positive swinging motion tendency; A stopper head (6), wherein the stopper head (6) is arranged on the mounting frame (2), and the stopper head (6) abuts against the bottle mouth clamped between the first clamping arm (11) and the second clamping arm (12) along the radial direction of the bottle mouth.

2. The bottle clamping device for a capping machine according to claim 1, characterized in that: The bottle clamping device of the capping machine further comprises a second rotating shaft (4), the second rotating shaft (4) is rotatably arranged on the mounting frame (2), and the second clamping arm (12) is fixed on the second rotating shaft (4).

3. The bottle clamping device for a capping machine according to claim 2, characterized in that: The first clamping arm (11) has a first fixed end and a first clamping end, and the second clamping arm (12) has a second fixed end and a second clamping end, the first fixed end is arranged on the first rotating shaft (3), and the second fixed end is arranged on the second rotating shaft (4), the first fixed end and the second fixed end are provided with mutually meshing gear teeth, and the first clamping end and the second clamping end are used to clamp the bottle mouth.

4. The bottle clamping device for a capping machine according to claim 3, characterized in that: The first clamping end and the second clamping end are provided with opposite arc grooves.

5. The bottle clamping device for a capping machine according to claim 1, characterized in that: The side of the clamping guide rail (7) close to the connecting swing arm (52) has an inner recessed surface (71) and an outer convex surface (72); The rotating mechanism (100) can drive the first rotating shaft (3) to perform circular motion with the capping machine body (200) as the center through the mounting frame (2), and the end of the connecting swing arm (52) can abut against the clamping guide rail (7) along the radial direction of the trajectory of the circular motion of the first rotating shaft (3).

6. The bottle clamping device for a capping machine according to claim 5, characterized in that: The driving assembly (5) further comprises a roller (51), wherein the roller (51) is rotatably arranged on the connecting swing arm (52), and the connecting swing arm (52) rolls against the clamping guide rail (7) via the roller (51).

7. The bottle clamping device for a capping machine according to claim 6, characterized in that: The connecting swing arm (52) comprises a positioning arm (521), a follower arm (522) and a connecting bolt (523); the roller (51) is rotatably arranged on the positioning arm (521); and the follower arm (522) is connected to the first rotating shaft (3); The positioning arm (521) is provided with a vertical connecting through hole (5211), and the connecting bolt (523) passes through the connecting through hole (5211) and is threadedly connected to the follower arm (522). The inner diameter of the connecting through hole (5211) is larger than the outer diameter of the screw rod of the connecting bolt (523), and the head of the connecting bolt (523) abuts against the positioning arm (521).

8. The bottle clamping device for a capping machine according to claim 7, characterized in that: The connecting swing arm (52) further comprises an adjusting bolt (524), wherein the adjusting bolt (524) is threadedly connected to the positioning arm (521), and the end of the adjusting bolt (524) extending out of the positioning arm (521) abuts against the follower arm (522) along the swinging direction of the connecting swing arm (52).

9. The bottle clamping device for a capping machine according to claim 1, characterized in that: A bushing is vertically arranged on the mounting frame (2), and the first rotating shaft (3) is rotationally matched with the mounting frame (2) via the bushing.

10. The bottle clamping device for a capping machine according to any one of claims 1 to 9, characterized in that: The mounting frame (2) comprises an upper mounting plate (21) and a lower mounting plate (22), wherein the upper mounting plate (21) and the lower mounting plate (22) are fixed on the rotating mechanism (100) of the capping machine at a vertical interval, wherein one end of the first rotating shaft (3) close to the clamping assembly (1) is rotatably arranged on the upper mounting plate (21), and one end of the first rotating shaft (3) close to the driving assembly (5) is rotatably arranged on the lower mounting plate (22).

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