An automatic cap screwing machine

Abstract

The utility model provides a kind of automatic cap screwing machine, including barrel conveying mechanism, cover body conveying mechanism and cap screwing mechanism;The barrel conveying mechanism is used to sequentially convey the barrel to the tightening station, loosening station stably according to specific orientation;The cover body conveying mechanism is used to stably convey the cover body to the tightening station according to specific orientation;The cap screwing mechanism includes tightening assembly and loosening assembly;The tightening assembly is arranged at the tightening station, can clamp the cover body, and the cover body is moved to the thread part at the barrel opening and is tightened action;The loosening assembly is arranged at the loosening station, can clamp the cover body on the barrel, and the cover body is loosened in reverse at a certain angle;The step of improving cap screwing is increased slightly loosening the cover body after tightening the cover body operation, while guaranteeing sealing quality and product sealing performance, also can improve the comfort of opening cover.

Description

Technical Field

[0001] This utility model relates to the field of automated production technology, and in particular to an automatic capping machine. Background Technology

[0002] In industries such as daily chemicals, food, and pharmaceuticals, product packaging is not only an important means of protecting the contents and extending shelf life, but also a key element in ensuring transportation safety and improving user experience. Among these, the container-and-cap packaging form is widely used for packaging various liquid, paste, or powder products, such as shampoo, edible oil, and pharmaceutical solutions, due to its good sealing performance and ease of transportation and use.

[0003] A typical packaging process usually includes: first, filling a predetermined amount of contents into a container; then, aligning the cap with the container opening and screwing it securely onto the threaded part of the container to achieve an effective seal. This process of securely installing the cap onto the threaded part of the container is generally called capping. Capping directly affects the product's sealing performance, leak-proof effect, and stability during its shelf life; therefore, the quality of the capping is crucial to ensuring the overall quality of the product.

[0004] Traditional capping processes rely on manual labor, where operators manually tighten the caps onto the threads of the container. This is not only inefficient, but also prone to inconsistencies in the tightening force applied by operators, resulting in inconsistent sealing quality and compromising the product's sealing performance, leak-proof effect, and shelf-life stability. Furthermore, manual capping poses a significant risk of hand injury to operators. Therefore, automatic capping machines have gradually replaced manual capping.

[0005] However, existing automatic capping machines generally use a one-time direct tightening method for the capping process. The torque control accuracy of the capping is poor, and the cap is often over-tightened, making it difficult to open. This seriously affects the user's comfort when opening the cap, and consequently affects the user's evaluation of the product. Utility Model Content

[0006] This utility model provides an automatic capping machine that loosens the cap slightly after tightening it, ensuring not only good sealing quality and performance but also improved comfort when opening the cap. The specific solution is as follows:

[0007] An automatic capping machine is used to screw caps onto the threaded portion of a barrel opening, and includes a barrel conveying mechanism, a cap conveying mechanism, and a capping mechanism.

[0008] The barrel conveying mechanism is used to stably and sequentially convey the barrels to the tightening station and the loosening station according to a specific orientation;

[0009] The cover conveying mechanism is used to stably convey the cover to the tightening station in a specific orientation;

[0010] The capping mechanism includes a tightening component and a loosening component; the tightening component is located at the tightening station and can clamp the cap and move the cap to the threaded part at the opening of the barrel for tightening; the loosening component is located at the loosening station and can clamp the cap on the barrel and loosen the cap in the opposite direction at a certain angle.

[0011] Furthermore, the tightening assembly includes a first chuck, a first clamping drive component, a tightening drive component, a first lifting drive component, and a first lateral movement drive component; the first chuck is adapted to the cover body, and under the drive of the first clamping drive component, it can clamp or loosen the cover body; the tightening drive component can drive the first chuck to rotate forward, tightening the cover body onto the threaded portion at the opening of the barrel; the first lifting drive component can drive the first chuck to move up and down; the first lateral movement drive component can drive the first chuck to move laterally.

[0012] Furthermore, the first chuck includes at least two circumferentially evenly distributed jaw flaps; the first clamping drive component includes a cylinder, a cylinder shaft connected to the cylinder piston, and a central drive head fixed to the end of the cylinder shaft; the cylinder can drive the cylinder shaft to move axially; the outer peripheral surface of the central drive head is a downwardly tapered guide surface, and the upper inner side of the jaw flap is provided with an inclined surface that slides in cooperation with the tapered guide surface; the middle part of the jaw flap is rotatably connected to a fixed seat, forming a rotation fulcrum around the middle part; the lower part of the jaw flap is provided with a clamping end for clamping the outer wall of the cover, and the lower part of the jaw flap is provided with a reset component. When the cylinder shaft retracts and the central drive head retracts its pressure on the upper part of the jaw flap, the clamping end of the lower part of the jaw flap opens outward under the action of the reset component, releasing the cover.

[0013] Furthermore, the first chuck includes three gripper flaps evenly distributed in a 120° circumferential direction, and an elastic pad is provided at the position where the gripping end of the lower part of the gripper flap contacts the outer wall of the cover.

[0014] Furthermore, a central boss is provided at the center of the bottom of the fixing seat, and the reset component is a spring that abuts against the side wall of the central boss and the inner side of the lower part of the gripper flap.

[0015] Furthermore, the bottom of the central boss is provided with a central positioning pin that is adapted to the top of the cover.

[0016] Furthermore, the loosening assembly includes a second clamp, a second clamping drive component, a loosening drive component, and a second lifting drive component; the second clamp is adapted to the cover body, and can clamp or loosen the cover body under the drive of the second clamping drive component; the loosening drive component can drive the second clamp to perform a reverse loosening at a certain angle; the second lifting drive component can drive the second clamp to move up and down.

[0017] Furthermore, the loosening assembly also includes a second lateral movement drive component, which can drive the second chuck to move laterally.

[0018] Furthermore, the barrel conveying mechanism includes a barrel conveying assembly and a barrel fixing assembly; the barrel conveying assembly is used to stably convey the barrel in the horizontal direction; the barrel fixing assembly is used to fix the barrel at the tightening station or the loosening station.

[0019] Furthermore, the cover conveying mechanism includes a cover conveying assembly, a cover receiving seat disposed at the end of the cover conveying assembly, and a cover lifting cylinder; the top of the cover receiving seat is provided with a positioning groove adapted to the cover, and the cover conveying assembly is used to stably convey the cover to the positioning groove in the horizontal direction; the cover lifting cylinder can drive the cover receiving seat to move up and down.

[0020] The automatic capping machine provided by this utility model improves the capping process through the cooperation between the barrel conveying mechanism, the cap conveying mechanism, the tightening component, and the loosening component. After tightening the cap, an operation is added to slightly loosen the cap, which not only ensures the sealing quality and product sealing performance, but also improves the comfort of opening the cap.

[0021] In some embodiments, the tightening assembly includes a first chuck, a first clamping drive component, a tightening drive component, a first lifting drive component, and a first lateral movement drive component. Through the cooperation between the first chuck, the first clamping drive component, the tightening drive component, the first lifting drive component, and the first lateral movement drive component, the clamping, moving, and tightening actions of the cover can be completed efficiently and accurately, and the stability and reliability are high.

[0022] In some embodiments, the first clamping drive component includes a cylinder, a cylinder shaft, and a central drive head. The first chuck includes at least two circumferentially evenly distributed gripper petals. The inclined surface of the upper inner side of the gripper petals slides in cooperation with the tapered guide surface of the outer peripheral surface of the central drive head. The middle part is rotatably connected to a fixed base, and the lower part is provided with a clamping end for clamping the outer wall of the cover. The lower part is also provided with a reset component, which can stably and efficiently realize the clamping and releasing of the cover, and has high reliability and low cost.

[0023] In some embodiments, the first chuck includes three jaws evenly distributed in a 120° circumferential direction, which provides more uniform force and more stable clamping, and can avoid eccentric clamping; the inner side of the clamping end of the lower part of the jaw is provided with an elastic pad at the position where it contacts the outer wall of the cover, which can prevent damage to the surface of the cover, improve the clamping friction, and extend the service life of the jaws.

[0024] In some embodiments, the clamping end of the lower part of the gripper flap is reset by a spring abutting between the side wall of the central boss and the inner side of the lower part of the gripper flap. This not only has a simple structure and low cost, but also has a good reset effect.

[0025] In some embodiments, by providing a central positioning pin at the bottom of the central boss that adapts to the top of the cover, precise positioning can be achieved during clamping, and the rotational action can be made more stable, thereby further improving the quality of the tightening operation.

[0026] In some embodiments, the loosening assembly includes a second clamp, a second clamping drive component, a loosening drive component, and a second lifting drive component. Through the cooperation between the second clamp, the second clamping drive component, the loosening drive component, and the second lifting drive component, the clamping and loosening actions of the cover can be completed efficiently and accurately, and the stability and reliability are high.

[0027] In some embodiments, the loosening assembly further includes a second lateral movement drive component. When the distance between two adjacent barrels is adjusted, the position of the second clamp can be adjusted by the second lateral movement drive component, which is more flexible, convenient, and has better applicability.

[0028] In some embodiments, the barrel conveying mechanism includes a barrel conveying component and a barrel fixing component. The barrel conveying component and the barrel fixing component can realize the stable conveying and fixing of the barrel, which can prevent the barrel from rotating synchronously during tightening or loosening operations and affecting the capping effect. This can improve the stability of the automatic capping machine and improve the quality of capping.

[0029] In some embodiments, the cover conveying mechanism includes a cover conveying assembly, a cover receiving seat disposed at the end of the cover conveying assembly, and a cover lifting cylinder. Through the cooperation of the three components, the stable conveying of the cover can be achieved more efficiently and stably. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an automatic capping machine.

[0031] Figure 2 This is a schematic diagram of the tightening assembly.

[0032] Figure 3 This is a schematic diagram of the structure of the first chuck and the first clamping drive component.

[0033] Figure 4 Schematic diagram of the first clamp structure Figure 1 .

[0034] Figure 5 Schematic diagram of the first clamp structure Figure 2 .

[0035] Figure 6 This is a schematic diagram of the barrel conveying mechanism.

[0036] Figure 7 This is a schematic diagram showing the usage status of the barrel conveying mechanism.

[0037] Figure 8 This is a schematic diagram of the cover conveying mechanism.

[0038] Figure 9 This is a schematic diagram of the cover support structure.

[0039] The attached figures are labeled as follows: 1 is the lid, 2 is the barrel, 3 is the barrel conveying mechanism, 31 is the barrel conveying assembly, 32 is the barrel fixing assembly, 4 is the lid conveying mechanism, 41 is the lid conveying assembly, 42 is the lid receiving seat, 421 is the positioning groove, 43 is the lid lifting cylinder, 5 is the capping mechanism, 51 is the tightening assembly, 511 is the first chuck, 5111 is the gripper flap, 5112 is the fixing seat, 5113 is the reset component, 5114 is the central boss, 5115 is... The components are: center positioning pin, elastic pad, first clamping drive component, cylinder, cylinder shaft, center drive head, tightening drive component, first lifting drive component, first lateral movement drive component, loosening assembly, second chuck, second clamping drive component, second clamping drive component, loosening drive component, second lifting drive component, and second lateral movement drive component. Detailed Implementation

[0040] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. For ease of explanation, the terms "front," "rear," "positive," "negative," "left," "right," "top," "bottom," "upper," "lower," "inner," "outer," and "inner" in this utility model indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model or limitations on the actual orientation of the product or device during production, use, sales, etc. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Furthermore, in the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," and "composition," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] This utility model provides an automatic capping machine, which can be used to tighten and install a cap 1 onto the threaded part of the opening of a barrel 2, thereby sealing the barrel 2. In this embodiment, the cap 1 is generally circular, but in practical applications, the cap 1 can also be generally square or other polygonal, as long as the bottom is provided with a circular groove that matches the threaded part of the opening of the barrel 2; there is no limitation here. The barrel 2 is square, but in practical applications, the barrel 2 can also be circular or other polygonal, as long as the top opening is provided with a threaded part that matches the circular groove at the bottom of the cap 1; there is no limitation here either.

[0042] like Figure 1 The diagram shown is a structural schematic of the automatic capping machine, which includes a barrel conveying mechanism 3, a cap conveying mechanism 4, and a capping mechanism 5. Specifically:

[0043] The barrel conveying mechanism 3 is used to stably and sequentially convey the filled barrels 2 from the upstream process (such as the filling machine) to the tightening station, loosening station, etc., according to a specific orientation (such as the opening of the barrel 2 facing upward in this embodiment), so as to perform tightening operation, loosening operation and unloading operation.

[0044] The cover conveying mechanism 4 is used to stably convey the cover 1 to the tightening station in a specific orientation (such as in this embodiment, the opening of the cover 1 faces downward) for tightening operation.

[0045] The capping mechanism 5 includes a tightening component 51 and a loosening component 52; wherein, the tightening component 51 is disposed at the tightening station, which can clamp the cap 1 located at the tightening station and move the cap 1 to the threaded part of the opening of the barrel 2 at the tightening station for tightening; the loosening component 52 is disposed at the loosening station, which can clamp the cap 1 located on the barrel 2 at the loosening station and loosen the cap 1 in the opposite direction at a certain angle.

[0046] In use, the barrel 2 is first transported to the tightening station by the barrel conveying mechanism 3, and the cover 1 is also transported to the tightening station by the cover conveying mechanism 4. Then, the tightening assembly 51 clamps the cover 1 located at the tightening station and moves the cover 1 to the threaded part of the opening of the barrel 2 at the tightening station for tightening. After tightening, the tightening assembly 51 releases the cover 1 to reset. Then, the barrel 2 is transported to the loosening station by the barrel conveying mechanism 3. Finally, the loosening assembly 52 clamps the cover 1 located on the barrel 2 at the loosening station and loosens the cover 1 in the opposite direction at a certain angle.

[0047] The automatic capping machine with the above structure improves the capping process through the cooperation between the barrel conveying mechanism 3, the cap conveying mechanism 4, the tightening component 51, and the loosening component 52. Actual production verification shows that after tightening the cap 1, the operation of slightly loosening the cap 1 is added. Combined with the subsequent aluminum foil sealing process on the production line, the sealing effect of the final product fully meets the production quality requirements, and the user has a good experience in opening the cap. In contrast, products that are directly sealed with aluminum foil without the loosening step have a cap that is too tightly sealed, making it easier to open the cap normally.

[0048] In some embodiments, such as Figure 1 , Figure 2As shown, the tightening assembly 51 includes a first chuck 511, a first clamping drive component 512, a tightening drive component 513, a first lifting drive component 514, and a first lateral movement drive component 515. The first chuck 511 is adapted to the cover 1 and, driven by the first clamping drive component 512, can clamp or loosen the cover 1. The tightening drive component 513 can drive the first chuck 511 to rotate forward, tightening the cover 1 onto the threaded portion at the opening of the barrel 2. In this embodiment, the tightening drive component 513 is a motor, and the force required to tighten the cover 1 can be controlled by setting the motor torque. The first lateral movement drive component... 515 can drive the first chuck 511 to move laterally (in this embodiment, lateral movement includes left-right movement, forward-backward movement, or simultaneous left-right and forward-backward movement), thereby moving the cover 1 directly above the barrel 2, making the cover 1 coaxial with the threaded portion at the opening of the barrel 2; the first lifting drive component 514 can drive the first chuck 511 to move up and down. After the cover 1 and the threaded portion at the opening of the barrel 2 are coaxial, the first lifting drive component 514 drives the first chuck 511 to descend to perform a tightening operation. After the tightening operation is completed, the first lifting drive component 514 drives the first chuck 511 to rise and reset. Specifically, preferably, in this embodiment, as... Figure 1 As shown, the automatic capping machine is equipped with a support frame, on which a guide plate is horizontally fixed. The guide plate has multiple horizontally parallel guide rails. The tightening assembly 51 is mounted on a sliding mounting frame. The back of the sliding mounting frame has a groove that mates with the guide rails. An X-axis motor can drive the sliding mounting frame to move left and right along the guide rails. Additionally, the surface of the sliding mounting frame has multiple vertically parallel guide rails. The back of the tightening assembly 51 has a groove that mates with the vertical guide rails. A Y-axis motor can push the tightening assembly 51 to move up and down along the vertical guide rails. Of course, other specific installation methods and structures can also be used, as long as they can achieve the clamping, rotation, horizontal movement, and vertical lifting motion of the first chuck 511. No restrictions are imposed here.

[0049] The automatic capping machine with the above structure, through the cooperation between the first chuck 511, the first clamping drive component 512, the tightening drive component 513, the first lifting drive component 514, and the first lateral movement drive component 515, can not only efficiently and accurately complete the clamping, moving, and tightening actions of the cap 1, but also has high stability and good reliability.

[0050] In some embodiments, such as Figure 3 , Figure 4 , Figure 5As shown, the first clamping drive component 512 includes a cylinder 5121, a cylinder shaft 5122, and a central drive head 5123. Specifically, one end of the cylinder shaft 5122 is connected to the piston of the cylinder 5121 and can move axially along the cylinder shaft 5122 under the drive of the cylinder 5121; the central drive head 5123 is fixed to the other end of the cylinder shaft 5122, and the outer peripheral surface of the central drive head 5123 is a downwardly tapered guide surface, for example, in this embodiment. The central drive head 5123 resembles an inverted mushroom head shape. Furthermore, the first chuck 511 includes at least two circumferentially evenly distributed gripper segments 5111, specifically three, four, five, or even more, without limitation. The upper inner side of each gripper segment 5111 is provided with an inclined surface that slides into the conical guide surface. The engagement between the conical guide surface and the inclined surface allows for the conversion from axial to radial movement. The middle portion of each gripper segment 5111 is rotatably connected to a fixed base. On 5112, a pivot point is formed around its central part, creating a swing lever mechanism; the lower part of the gripper flap 5111 is provided with a clamping end for clamping the outer wall of the cover 1. When the cylinder 5121 drives the cylinder shaft 5122 to move downward, driving the central drive head 5123 to move downward, the central drive head 5123, through the cooperation of the tapered guide surface of the central drive head 5123 and the inclined surface on the inner side of the upper part of the gripper flap 5111, pushes the upper part of the gripper flap 5111 outward. The pressing action, through the rotational fulcrum, causes the gripping end of the lower part of the gripper flap 5111 to retract inward, thereby clamping the cover 1. At the same time, a reset component 5113 is also provided at the lower part of the gripper flap 5111. When the cylinder shaft 5122 retracts and the central drive head 5123 removes the pressing action on the upper part of the gripper flap 5111, the gripping end of the lower part of the gripper flap 5111 opens outward under the action of the reset component 5113, thereby releasing the cover 1.

[0051] The automatic capping machine with the above structure includes a first clamping drive component 512 comprising a cylinder 5121, a cylinder shaft 5122, and a central drive head 5123. The first chuck 511 includes at least two circumferentially evenly distributed gripper petals 5111. The inclined surface of the upper inner side of the gripper petal 5111 slides in cooperation with the tapered guide surface of the outer peripheral surface of the central drive head 5123. The middle part is rotatably connected to a fixed base 5112. The lower part is provided with a clamping end for clamping the outer wall of the cap 1, and the lower part is also provided with a reset component 5113. It can stably and efficiently realize the clamping and loosening of the cap 1, and has high reliability and low cost.

[0052] In some embodiments, such as Figure 4 , Figure 5As shown, preferably, the first chuck 511 includes three gripper segments 5111 evenly distributed in a 120° circumferential direction, and an elastic pad 5116 is provided at the position where the inner side of the gripping end of the lower part of the gripper segment 5111 contacts the outer wall of the cover 1. The elastic pad 5116 refers to an elastic buffer layer attached to the inner surface of the gripping end of the lower part of the gripper segment 5111, which can be made of elastic materials such as silicone, nitrile rubber, polyurethane (PU), TPE, etc., and can be installed by means of bonding, embedding in grooves, or snap-fit ​​fixing, etc., without limitation.

[0053] The automatic capping machine with the above structure includes a first chuck 511 comprising three gripper segments 5111 evenly distributed in a 120° circumferential direction, resulting in more uniform force distribution and more stable clamping, thus avoiding eccentric clamping. An elastic pad 5116 is provided at the position where the inner side of the gripping end of the lower part of the gripper segment 5111 contacts the outer wall of the cap 1, which can prevent damage to the cap surface, improve the gripping friction, and extend the service life of the gripper.

[0054] In some embodiments, a central boss 5114 is provided at the center of the bottom of the fixing base 5112, and the reset component 5113 is a spring, with one end of the spring abutting against the side wall of the central boss 5114 and the other end abutting against the lower inner side of the gripper flap 5111.

[0055] The automatic capping machine with the above structure uses a spring that abuts against the side wall of the central boss and the inner side of the lower part of the gripper flap to reset the gripping end of the lower part of the gripper flap 5111. It is not only simple in structure and low in cost, but also has a good reset effect.

[0056] In some embodiments, a central positioning pin 5115 is provided at the bottom of the central boss 5114. The central positioning pin 5115 is adapted to the top of the cover 1. When the clamping end of the lower part of the claw flap 5111 clamps the cover 1, precise positioning can be achieved.

[0057] The automatic capping machine with the above structure, by setting a central positioning pin 5115 at the bottom of the central boss 5114 that is adapted to the top of the cap 1, can accurately position the cap during clamping and make the rotation action more stable, thereby further improving the quality of the tightening operation.

[0058] In some embodiments, the loosening assembly 52 includes a second clamp 521, a second clamping drive component 522, a loosening drive component 523, and a second lifting drive component 524. The second clamp 521 is adapted to the cover 1 and can clamp or loosen the cover 1 under the drive of the second clamping drive component 522. The loosening drive component 523 can drive the second clamp 521 to loosen in the opposite direction at a certain angle, slightly loosening the cover 1. In this embodiment, the loosening drive component 523 is a motor, which loosens the cover. The angle of body 1 can be controlled by setting the motor torque; the second lifting drive component 524 can drive the second clamp 521 to move up and down. When the cover conveying mechanism 4 conveys the barrel 2 directly below the second clamp 521, so that the cover 1 on the barrel 2 is coaxial with the second clamp 521, the second lifting drive component 524 drives the second clamp 521 to descend to perform a loosening operation. After the loosening operation is completed, the second lifting drive component 524 drives the second clamp 521 to rise and reset.

[0059] The automatic capping machine with the above structure, through the cooperation between the second chuck 521, the second clamping drive component 522, the loosening drive component 523, and the second lifting drive component 524, can not only efficiently and accurately complete the clamping and loosening actions of the cap 1, but also has high stability and good reliability.

[0060] In some embodiments, the loosening assembly 52 further includes a second lateral movement drive component 525, which can drive the second chuck 521 to move laterally. In this embodiment, the structure of the loosening assembly 52 is basically the same as that of the tightening assembly 51, the only difference being the rotation direction and angle of the first chuck 511 and the second chuck 521.

[0061] The automatic capping machine with the above structure drives the second clamp 521 to move laterally through the second lateral movement drive component 525. When the distance between two adjacent barrels 1 is adjusted, the position of the second clamp 521 can be adjusted through the second lateral movement drive component 525, which is more flexible, convenient and has better applicability.

[0062] In some embodiments, such as Figure 6 , Figure 7As shown, the barrel conveying mechanism 3 includes a barrel conveying assembly 31 and a barrel fixing assembly 32. The barrel conveying assembly 31 is used to stably convey the barrel 2 in the horizontal direction. In this embodiment, the barrel conveying assembly 31 is a conveyor belt assembly, but in actual applications, it can also be other conveying structures. The barrel fixing assembly 32 is used to fix the barrel 2 at the tightening station or the loosening station. In this embodiment, the barrel fixing assembly 32 is a clamping plate disposed on both sides of the conveyor belt assembly. Under the drive of the motor, it can move relative to the barrel 2 to clamp it and fix the barrel 2.

[0063] The automatic capping machine with the above structure can achieve stable conveying and fixing of the barrel 2 through the barrel conveying component 31 and the barrel fixing component 32. This can prevent the barrel 2 from rotating synchronously during tightening or loosening operations, which would affect the capping effect. As a result, the stability of the automatic capping machine can be improved and the quality of the capping can be enhanced.

[0064] In some embodiments, Figure 8 , Figure 9 As shown, the cover conveying mechanism 4 includes a cover conveying assembly 41, a cover receiving seat 42, and a cover lifting cylinder 43; the cover receiving seat 42 is disposed at the end of the cover conveying assembly 41, and the top of the cover receiving seat 42 is provided with a positioning groove 421 adapted to the cover 1; the cover conveying assembly 41 can stably convey the cover 1 to the positioning groove 421 in the horizontal direction; the cover lifting cylinder 43 can drive the cover receiving seat 42 to move up and down, so that the first clamp 511 can clamp the cover 1.

[0065] The automatic capping machine with the above structure can achieve more efficient and stable conveying of the cap 1 through the cooperation of the cap conveying component 41, the cap receiving seat 42 and the cap lifting cylinder 43.

[0066] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. All equivalent changes made in accordance with the shape, structure and principle of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An automatic capping machine for screwing a cap (1) tightly onto the threaded portion of the opening of a barrel body (2), characterized in that, It includes a barrel conveying mechanism (3), a lid conveying mechanism (4), and a capping mechanism (5); The barrel conveying mechanism (3) is used to stably and sequentially convey the barrel (2) to the tightening station and the loosening station in a specific orientation; The cover conveying mechanism (4) is used to stably convey the cover (1) to the tightening station in a specific orientation; The capping mechanism (5) includes a tightening component (51) and a loosening component (52); the tightening component (51) is located at the tightening station, which can clamp the cap (1) and move the cap (1) to the threaded part at the opening of the barrel (2) for tightening; the loosening component (52) is located at the loosening station, which can clamp the cap (1) on the barrel (2) and loosen the cap (1) in the opposite direction at a certain angle.

2. The automatic capping machine according to claim 1, characterized in that, The tightening assembly (51) includes a first chuck (511), a first clamping drive component (512), a tightening drive component (513), a first lifting drive component (514), and a first lateral movement drive component (515). The first chuck (511) is adapted to the cover (1) and can clamp or loosen the cover (1) under the drive of the first clamping drive component (512). The tightening drive component (513) can drive the first chuck (511) to rotate in the forward direction and tighten the cover (1) to the threaded part at the opening of the barrel (2). The first lifting drive component (514) can drive the first chuck (511) to move up and down. The first lateral movement drive component (515) can drive the first chuck (511) to move laterally.

3. The automatic capping machine according to claim 2, characterized in that, The first chuck (511) includes at least two circumferentially evenly distributed jaw flaps (5111); the first clamping drive component (512) includes a cylinder (5121), a cylinder shaft (5122) piston-connected to the cylinder (5121), and a central drive head (5123) fixed to the end of the cylinder shaft (5122); the cylinder (5121) can drive the cylinder shaft (5122) to move axially; the outer peripheral surface of the central drive head (5123) is a downwardly tapered guide surface, and the upper inner side of the jaw flaps (5111) is provided with a sliding engagement with the tapered guide surface. Inclined surface; the middle part of the gripper flap (5111) is rotatably connected to a fixed base (5112), forming a rotation fulcrum around the middle part; the lower part of the gripper flap (5111) is provided with a clamping end for clamping the outer wall of the cover (1), and the lower part of the gripper flap (5111) is provided with a reset component (5113). When the cylinder shaft (5122) retracts and the central drive head (5123) removes the push on the upper part of the gripper flap (5111), the clamping end of the lower part of the gripper flap (5111) opens outward under the action of the reset component (5113) to release the cover (1).

4. The automatic capping machine according to claim 3, characterized in that, The first chuck (511) includes three gripper flaps (5111) evenly distributed in a 120° circumferential direction, and an elastic pad (5116) is provided at the position where the inner side of the gripping end of the lower part of the gripper flap (5111) contacts the outer wall of the cover (1).

5. The automatic capping machine according to claim 3, characterized in that, A central boss (5114) is provided at the center of the bottom of the fixed base (5112), and the reset component (5113) is a spring that abuts against the side wall of the central boss (5114) and the lower inner side of the gripper flap (5111).

6. The automatic capping machine according to claim 5, characterized in that, The bottom of the central boss (5114) is provided with a central positioning pin (5115) that is adapted to the top of the cover (1).

7. The automatic capping machine according to any one of claims 1 to 6, characterized in that, The loosening assembly (52) includes a second clamp (521), a second clamping drive component (522), a loosening drive component (523), and a second lifting drive component (524); the second clamp (521) is adapted to the cover (1), and under the drive of the second clamping drive component (522), it can clamp or loosen the cover (1); the loosening drive component (523) can drive the second clamp (521) to loosen in the opposite direction at a certain angle; The second lifting drive component (524) can drive the second chuck (521) to move up and down.

8. The automatic capping machine according to claim 7, characterized in that, The loosening assembly (52) further includes a second lateral movement drive component (525), which can drive the second chuck (521) to move laterally.

9. The automatic capping machine according to any one of claims 1 to 6, characterized in that, The barrel conveying mechanism (3) includes a barrel conveying assembly (31) and a barrel fixing assembly (32); the barrel conveying assembly (31) is used to stably convey the barrel (2) in the horizontal direction; the barrel fixing assembly (32) is used to fix the barrel (2) at the tightening station or the loosening station.

10. The automatic capping machine according to any one of claims 1 to 6, characterized in that, The cover conveying mechanism (4) includes a cover conveying assembly (41), a cover receiving seat (42) disposed at the end of the cover conveying assembly (41), and a cover lifting cylinder (43); the top of the cover receiving seat (42) is provided with a positioning groove (421) adapted to the cover (1); the cover conveying assembly (41) is used to stably convey the cover (1) to the positioning groove (421) in the horizontal direction; the cover lifting cylinder (43) can drive the cover receiving seat (42) to move up and down.

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