Cap screwing machine and cap screwing mechanism thereof

Abstract

The utility model discloses a cap screwing machine and a cap screwing mechanism thereof. The cap screwing machine comprises a cup body positioning mechanism, a lifting mechanism and the cap screwing mechanism which are in circuit connection with an industrial personal computer. The cap screwing mechanism comprises a rotating motor, a rotating shaft, a cap screwing clamping jaw, a torque sensor, a spring and a sliding seat; the rotating shaft is composed of an upper shaft and a lower shaft which are connected through a coupler, and the lower shaft is sleeved with the spring and the sliding base. A fixed seat is arranged on the lower shaft, the fixed seat is positioned above the sliding seat, and the spring is limited between the fixed seat and the sliding seat; the cap screwing clamping jaw is arranged below the sliding seat; the lifting mechanism comprises a lifting motor, a lifting lead screw controlled by the lifting motor to rotate, a lifting sliding rail and a lifting sliding base arranged on the lifting lead screw in a sleeving mode, the lifting lead screw rotates to control the lifting sliding base to move up and down, and the cap screwing mechanism is fixed to the lifting sliding base. The cap screwing mechanism moves downwards along with the lifting sliding base to compress the spring, the cap screwing clamping jaw clamps a cup cap on the cup body positioning mechanism, and the rotating motor drives the cap screwing clamping jaw to rotate to achieve cap screwing.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging processing equipment, in particular to a capping machine and a capping mechanism thereof. Background Art

[0002] The capping machine is a device that screws the cap onto the packaging container (such as the cup body). The existing capping machines generally rely on rotating motors to cap the bottle caps. The capping head structure of the automatic capping machine is relatively fixed. During the rotation of the cup cover and the cup body, the distance between the cup cover and the cup body will gradually shorten. The fixed capping mechanism has a very limited scope of application. It can only stop the cup cover after rotating to the maximum range. It cannot guarantee whether the cap is screwed firmly, thus affecting the capping effect. Summary of the invention

[0003] The utility model aims to provide a capping machine and a capping mechanism thereof which have wide application range, firm capping and high capping efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] Technical Solution 1: A capping mechanism, comprising a rotating motor, a rotating shaft and a capping clamp, characterized in that it also includes a torque sensor, a spring and a sliding seat; the rotating shaft is composed of an upper shaft and a lower shaft connected by a coupling, and the spring and the sliding seat are both sleeved on the lower shaft; a fixed seat is provided on the lower shaft, the fixed seat is located above the sliding seat, and the spring is limited between the fixed seat and the sliding seat; the capping clamp is arranged below the sliding seat.

[0006] Preferably, the capping jaws are controlled by a cylinder; the upper shaft and the lower shaft are both hollow structures, and the air pipes of the cylinders are arranged in the cavities.

[0007] Preferably, the torque sensor is mounted on the upper shaft; and a slip ring connected to the air pipe is provided on the top of the rotating shaft.

[0008] Technical Solution 2: A capping machine, comprising a cup body positioning mechanism connected to an industrial computer circuit, and also comprising a column frame, a lifting mechanism, and the capping mechanism described in Technical Solution 1, wherein the lifting mechanism and the capping mechanism are both connected to the industrial computer circuit; the column frame is arranged parallel to the cup body positioning mechanism, the capping mechanism is located above the cup body positioning mechanism, and the lifting mechanism is fixed on the column frame; the lifting mechanism comprises a lifting motor, a lifting screw rod controlled to rotate by the lifting motor, a lifting slide rail, and a lifting slide seat sleeved on the lifting screw rod, the rotation of the lifting screw rod controls the up and down movement of the lifting slide seat, and the capping mechanism is fixed on the lifting slide seat; the lifting slide seat is also penetrated by a guide rod parallel to the lifting screw rod; the capping mechanism compresses the spring as the lifting slide seat moves downward, the capping clamp clamps the cup cover on the cup body positioning mechanism, and the rotating motor drives the capping clamp to rotate to realize capping.

[0009] Preferably, the column frame is provided with a slide rail and a slide seat in the horizontal direction, and the cup body positioning mechanism is fixed on the slide seat and the cup body positioning mechanism is controlled by a cylinder to move away from or close to the column frame.

[0010] Preferably, the cup body positioning mechanism includes a three-claw cylinder and three fixed clamping claws respectively fixed on the claws of the three-claw cylinder.

[0011] Preferably, the clamping height of the fixed clamping jaw is one third of the height of the cup body.

[0012] Compared with the prior art, the utility model has the following beneficial effects: first, the capping jaw is fixed under the sliding seat, and the clamping lid rotates with the rotating shaft. The spring is arranged between the sliding seat and the fixed seat. During the capping process, the compressed spring force can make the capping jaw move downward to compensate for the height difference of the cup lid, so that the capping is firm and the capping effect is better; second, the torque sensor stops after sensing that the capping reaches the set torque, so as to avoid excessive capping and improve the capping quality; third, the rotating shaft adopts a structure of connecting the upper shaft and the lower shaft with a coupling, which is more convenient for repairing and replacing parts, and also effectively improves the service life of the rotating shaft; fourth, the setting of the lifting mechanism, the capping mechanism and the cup body positioning mechanism connected by the industrial computer circuit, the lifting mechanism can drive the capping mechanism to move up and down according to the processing situation to adapt to the distance from the cup body positioning mechanism. When working, after the capping jaw clamps the cup lid, the capping mechanism moves downward for a certain stroke to compress the spring. When the cap is screwed, the cup lid will move downward when it is screwed into the cup body. The compressed spring force can make the capping jaw move downward to compensate for the height difference of the cup lid, so that the capping effect is better and the capping is firmer.

[0013] Further beneficial effects: First, the screw-on capping jaws are controlled by the cylinder, and the air pipes of the cylinders are all concentrated in the hollow structure of the upper and lower shafts, which simplifies the space occupied by the overall equipment and avoids the entanglement of the air pipes when the screw-on capping jaws rotate; second, a slip ring is provided on the top of the rotating shaft to connect the air pipes in the upper and lower shafts, and the air pipes lead to the screw-on capping jaw cylinder below, which simplifies the structure and can better avoid the entanglement of the air pipes during rotation; third, the cup body positioning mechanism is fixed on the sliding seat and is controlled by the cylinder to move away from or close to the column frame. Moving the cup body positioning mechanism out facilitates the placement of the cup and is also convenient for connecting with other processing production lines to realize automated production; fourth, the cup body positioning mechanism adopts a three-claw cylinder and a fixed jaw to control the three fixed jaws to extend and retract at the same time to clamp or release the cup, thereby improving the clamping coaxiality and achieving higher precision; fifth, the clamping height of the fixed jaws is one-third of the height of the cup body, which expands the effective clamping area, provides better clamping force, and can better ensure the fixation of the cup body when screwing the cap, further improving the screwing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model capping machine;

[0015] Figure 2 It is a side view structural diagram of the capping machine of the utility model;

[0016] Figure 3 yes Figure 2 A partial view of

[0017] Among them, 100, frame; 200, cup body positioning mechanism; 300, lifting mechanism; 400, screw cap mechanism; 500, column frame; 600, cup cover; 601, cup handle; 602, cup; 20, three-claw cylinder; 21, fixed clamp; 22, slide rail; 23, slide seat; 24, push-pull cylinder; 30, lifting motor; 31, lifting screw rod; 32, lifting slide seat; 33, guide rod; 34, lifting slide rail; 35, lifting synchronous belt; 36, lifting synchronous wheel; 40, rotating motor; 41, torque sensor; 42, spring; 43, sliding seat; 44, screw cap clamp; 45, rotating synchronous wheel; 46, rotating synchronous belt; 47, upper shaft; 48, lower shaft; 49, coupling; 50, sensor fixing seat; 51, rotating fixing seat; 52, screw cap clamp cylinder; 53, slip ring. DETAILED DESCRIPTION

[0018] In order to make the technical solution of the utility model clearer, the following Figure 1-3 It should be understood that the specific implementation methods described in this specification are only for explaining the utility model, and are not intended to limit the protection scope of the utility model.

[0019] A capping machine includes a frame 100, a cup body positioning mechanism 200, a lifting mechanism 300 and a capping mechanism 400; the cup body positioning mechanism 200, the lifting mechanism 300 and the capping mechanism 400 are all connected to the industrial computer circuit; the frame 100 is configured in a cabinet shape, and a column frame 500 is fixed on the frame 100; the cup body positioning mechanism 200 and the column frame 500 are arranged in parallel, the lifting mechanism 300 is arranged on the column frame 500, the capping mechanism 400 is located above the cup body positioning mechanism 200, and the capping mechanism 400 is controlled by the lifting mechanism 300 to move up and down, approaching or moving away from the cup body positioning mechanism 200.

[0020] The lifting mechanism 300 includes a lifting motor 30, a lifting screw 31, a lifting slide 32, a guide rod 33 and a lifting slide rail 34; the lifting screw 31 is controlled to rotate by the lifting motor 30. This embodiment takes the connection structure of the synchronous belt and the synchronous wheel as an example. The lifting synchronous wheel 36 is fixed at the bottom of the lifting screw 31, and the lifting synchronous wheel 36 is connected to the synchronous wheel on the main shaft of the lifting motor 30 through the lifting synchronous belt 35; the lifting slide 32 is threadedly connected to the lifting screw 31; the column frame 500 A guide rod 33 and a lifting rail 34 are also provided on the lifting slide 32 which are parallel to the lifting screw rod 31. A slider matching the lifting rail 34 is provided on the side of the lifting slide 32. A through hole for the guide rod 33 to pass through is provided on the lifting slide 32. After the lifting motor 30 is started, the lifting screw rod 31 rotates synchronously under the action of the synchronous wheel and the synchronous belt, and the lifting slide 32 threadedly connected to the lifting screw rod 31 rises or falls accordingly. Under the dual guiding action of the lifting rail 34 and the guide rod 33, the lifting and lowering of the lifting slide 32 is smoother.

[0021] The capping mechanism 400 comprises a rotary motor 40, a rotary shaft, a torque sensor 41, a spring 42, a sliding seat 43 and a capping clamp 44; the capping mechanism 400 is fixed on the lifting slide 32; the rotary shaft is controlled to rotate by the rotary motor 40, and there are multiple control methods. This embodiment takes the control method of synchronous wheel and synchronous belt as an example. The rotary shaft is arranged in the same direction as the rotary motor 40, and a rotary synchronous wheel 45 is fixed on the rotary shaft. The rotary synchronous wheel 45 is connected to the synchronous wheel on the rotary motor 40 through a rotary synchronous belt 46; the rotary shaft comprises an upper shaft 47 and a lower shaft 48, both of which are hollow structures. The upper shaft 47 and the lower shaft 48 are connected by a coupling 49, and the rotary synchronous wheel 45 is fixed on the upper shaft 47; the torque sensor 41 is arranged on the upper shaft 47 and is located below the rotary synchronous wheel 45; the torque sensor 41 is a prior art and can be installed through a sensor fixing seat 50 fixed to the lifting slide 32; A rotating fixed seat 51 is provided on the lower shaft 48 near the coupling 49, and the rotating fixed seat 51 is fixedly connected to the lifting slide 32, and a bearing is provided between the rotating fixed seat 51 and the lower shaft 48; the spring 42 and the sliding seat 43 are both sleeved on the lower shaft 48, and the spring 42 is clamped between the rotating fixed seat 51 and the sliding seat 43; the screw cap clamp 44 is provided below the sliding seat 43, used to clamp the cup cover and can slide up and down on the lower shaft 48 with the sliding seat 43; the structure of the screw cap clamp 44 has various types, and this embodiment takes two symmetrically arranged flat plate clamps as an example for explanation, and the two flat plate clamps are controlled by the screw cap clamp cylinder 52 fixed to the bottom of the sliding seat 43 to clamp the cup handle 601 on the cup cover 600; the air pipes of the screw cap clamp cylinder 52 are arranged in the cavities of the upper and lower shafts, and the air pipes extend all the way to the top of the rotating shaft, and a slip ring 53 connected to the air pipe is provided at the top of the rotating shaft to prevent the air pipe from being entangled when the screw cap clamp 44 rotates.

[0022] The cup body positioning mechanism 200 includes a three-claw cylinder 20 and three fixed jaws 21; the three-claw cylinder is a prior art, and the three fixed jaws 21 are respectively fixed on the three claws of the three-claw cylinder 20; the clamping height of the fixed jaws 21 is one-third of the height of the cup body, and the clamping area is larger, the clamping force is better, and the clamping force is more stable; the column frame 500 is horizontally provided with a slide rail 22 and a slide seat 23, the cup body positioning mechanism 200 is fixed on the slide seat 23, and the cup body positioning mechanism 200 is controlled by a push-pull cylinder 24 fixed in the column frame 500 to move away from or close to the column frame 500, that is, the push-pull cylinder 24 controls the cup body positioning mechanism 200 to return to the bottom of the screw-on cover mechanism 400 for screw-on cover operation, or extend out from the bottom of the screw-on cover mechanism 400 to facilitate the taking and placing of the cup.

[0023] Steps:

[0024] ① Place the cup 602 to be screwed on the cup body positioning mechanism 200, start the three-claw cylinder to clamp the cup 602;

[0025] ② The push-pull cylinder 24 is started, and the cup body positioning mechanism 602 moves with the slide seat 23 to the bottom of the capping mechanism 400;

[0026] ③ The lifting motor 30 is started, and the capping mechanism 400 moves downward with the lifting slide 32 to compress the spring 42. When the capping position is reached, the capping jaw cylinder 52 is started to clamp the cup handle 601 of the cup cover 600;

[0027] ④ The rotary motor 40 is started, and the rotating shaft drives the capping jaws 44 and the cup cover 600 to rotate synchronously. The torque sensor 41 senses that the capping stops after reaching the set torque, and the capping is completed.

[0028] The spring 42 is in a normal non-stretched or compressed state, or in a slightly compressed state in the default state. During operation, after the cap screwing jaws 44 clamp the cup cover 600, the cap screwing mechanism 400 moves downward for a certain distance to make the spring 42 in a compressed state. Since the cup cover 600 moves downward when it is screwed into the cup body, the compressed spring force can make the cap screwing jaws 44 move downward to compensate for the height difference of the cup cover.

[0029] In the description of the present technical solution, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "inner" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present technical solution and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present technical solution.

[0030] At the same time, in the description of this technical solution, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed" and "matched" 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 directly connected, or indirectly connected 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 this technical solution can be understood according to specific circumstances.

[0031] Although embodiments of the present technical solution have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present technical solution, and that the scope of the present technical solution is defined by the appended claims and their equivalents.

Claims

1. A capping mechanism, comprising a rotary motor (40), a rotary shaft and a capping clamp (44), characterized in that: The invention also comprises a torque sensor (4), a spring (42) and a sliding seat (43); the rotating shaft is composed of an upper shaft (47) and a lower shaft (48) connected by a coupling (49); the spring (42) and the sliding seat (43) are both sleeved on the lower shaft (48); a fixed seat (51) is provided on the lower shaft (48), the fixed seat (51) is located above the sliding seat (43), and the spring (42) is limited between the fixed seat (51) and the sliding seat (43); the rotary cover clamp (44) is arranged below the sliding seat (43).

2. The capping mechanism according to claim 1, characterized in that: The capping clamp (44) is controlled by a cylinder; the upper shaft (47) and the lower shaft (48) are both hollow structures, and the air pipes of the cylinder are arranged in the cavity.

3. The cap screwing mechanism according to claim 2, characterized in that: The torque sensor () is installed on the upper shaft (47); and a slip ring (53) connected to the air pipe is provided on the top of the rotating shaft.

4. A capping machine, comprising a cup body positioning mechanism (200) connected to an industrial computer circuit, characterized in that: It also includes a column frame (500), a lifting mechanism (300), and a capping mechanism (400) as claimed in claim 1, wherein the lifting mechanism (300) and the capping mechanism (400) are both connected to the industrial computer circuit; the column frame (500) is arranged parallel to the cup body positioning mechanism (200), the capping mechanism (400) is located above the cup body positioning mechanism (200), and the lifting mechanism (300) is fixed on the column frame (500); the lifting mechanism (300) includes a lifting motor (30), a lifting screw rod (31) controlled to rotate by the lifting motor (30), and a lifting rail ( 34), a lifting slide (32) sleeved on the lifting screw (31), the rotation of the lifting screw (31) controls the up and down movement of the lifting slide (32), and the cover screwing mechanism (400) is fixed on the lifting slide (32); the lifting slide (32) is also penetrated by a guide rod (33) parallel to the lifting screw (31); the cover screwing mechanism (400) moves downward with the lifting slide (32) to compress the spring (42), the cover screwing claw (44) clamps the cup cover (600) on the cup body positioning mechanism (200), and the rotating motor (40) drives the cover screwing claw (44) to rotate to realize the cover screwing.

5. The capping machine according to claim 4, characterized in that: The column frame (500) is provided with a slide rail (22) and a slide seat (23) in the horizontal direction, and the cup body positioning mechanism (200) is fixed on the slide seat (23) and the cup body positioning mechanism (200) is controlled by a cylinder to move away from or close to the column frame (500).

6. The capping machine according to claim 4, characterized in that: The cup body positioning mechanism (200) comprises a three-claw cylinder (20) and three fixed clamping claws (21) respectively fixed on the claws of the three-claw cylinder (20).

7. The capping machine according to claim 6, characterized in that: The clamping height of the fixed clamping claw (21) is one third of the height of the cup body.

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