Plastic bottle cap screwing device

Abstract

The utility model belongs to the technical field of beverage processing, and particularly relates to a plastic bottle cap screwing device which comprises an upper shell, a pressing ring connected to the bottom of the upper shell through a bolt, a groove body formed between the upper shell and the pressing ring and used for clamping a lower shell in a rotating mode, and a clamping assembly installed on the lower shell and comprises a rotating air cylinder. A sun gear is installed on a rotating shaft of the rotating air cylinder and connected with a plurality of planetary gears in a meshed mode, a connecting rod is installed on rotating shafts of the planetary gears, a clamping rod is installed on the connecting rod, a rotating assembly is installed on the upper shell and comprises a servo motor, the servo motor is in driving connection with a driving shaft, and a driving gear is installed on the driving shaft. The driving gear is connected with an inner gear ring in a meshed mode, and the inner gear ring is installed on the lower shell. The rotating air cylinder is matched with the gear structure, so that the multiple rotating clamping rods can clamp bottle caps of different sizes in a self-centering mode. The servo motor can drive the whole lower shell to rotate so as to drive the bottle caps clamped by the clamping rods to conduct efficient cap screwing work.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of beverage processing, and particularly relates to a plastic bottle cap screwing device. BACKGROUND

[0002] The plastic bottle cap screwing device is a key equipment in a food, medicine and daily chemical product packaging production line, and its function is to accurately screw a cap on a bottle mouth to ensure the sealing and safety of the product. With the rapid development of the packaging industry, the specifications of plastic bottles and the sizes of bottle caps are increasingly diversified, and the traditional cap screwing device has the following problems in actual application:

[0003] The traditional cap screwing device usually adopts fixed clamping jaws or pneumatic clamps to realize the clamping and screwing of the cap through mechanical transmission or pneumatic driving, however, such a design has poor adaptability in actual application: due to the large size difference of the cap (the diameter range is usually 20-50 mm), the traditional clamp needs to be frequently replaced or manually adjusted, and it is difficult to realize quick changeover, resulting in low production efficiency; in addition, the traditional cap screwing device also has the defect of unstable clamping: the existing clamping mechanism is mostly dependent on spring or pneumatic single-point clamping, such as the beverage bottle cap screwing device for beverage processing disclosed in the authorized announcement No. CN217868041U, and the clamping is prone to eccentricity due to the cap tolerance or deformation, and the cap is prone to slipping or deviation during the screwing process, causing the problem of poor sealing. SUMMARY

[0004] In view of the above problems, the utility model aims to provide a plastic bottle cap screwing device to solve the problems of poor adaptability, unstable clamping and low efficiency of the traditional device.

[0005] To achieve the above purpose, the utility model adopts the technical scheme of a plastic bottle cap screwing device, which comprises an upper shell, a pressure ring is connected to the bottom of the upper shell through bolts, a groove body of a rotating clamping lower shell is formed between the upper shell and the pressure ring, a clamping assembly is installed on the lower shell, the clamping assembly comprises a rotary air cylinder, a sun gear is installed on the rotary shaft of the rotary air cylinder, the sun gear is connected to a plurality of planetary gears, a connecting rod is installed on the rotating shaft of the planetary gear, a clamping rod is installed at one end of the connecting rod, a rotating assembly is installed on the upper shell, the rotating assembly comprises a servo motor, the servo motor is drivingly connected to a driving shaft, a driving gear is installed on the driving shaft, the driving gear is connected to an internal gear ring, and the internal gear ring is installed on the lower shell.

[0006] The utility model has the beneficial effects that: the rotating air cylinder drives the cooperating gear structure transmission to realize the self-centering clamping of the multiple rotating clamping rods of different sizes of caps; the servo motor can drive the whole lower shell to rotate and further drive the cap clamped by the clamping rod to perform efficient cap screwing work.

[0007] In order to realize the centering clamping of the bottle cap;

[0008] As a further improvement of the above technical solution: the number of planetary gears is three, and the three planetary gears are arranged equidistantly around the axis of the sun gear.

[0009] The beneficial effect of the improvement is that when the three planetary gears rotate synchronously under the drive of the sun gear, the clamping rods rotate to clamp the bottle cap, thereby realizing the centering clamping of the bottle cap.

[0010] In order to stably clamp the bottle cap;

[0011] As a further improvement of the above technical solution: the clamping rod is a cylindrical structure, and the axis of the clamping rod is parallel to the axis of the planetary gear.

[0012] The beneficial effect of the improvement is that the axes of the three clamping rods remain parallel during rotation, thereby stably clamping bottle caps of different specifications.

[0013] In order to ensure the stability of the rotation of the lower shell;

[0014] As a further improvement of the above technical solution: the bottom surface of the upper shell is formed with an upper connecting plate, the top surface of the lower shell is formed with a lower connecting plate, and a circular groove is formed between the upper connecting plate and the compression ring to accommodate the lower connecting plate.

[0015] The beneficial effect of the improvement is that the lower shell can stably rotate under the limitation of the compression ring and the upper shell.

[0016] In order to ensure the stability of the connection between the lower shell and the upper shell;

[0017] As a further improvement of the above technical solution: a plurality of connecting ears are formed on the compression ring and the upper connecting plate, and a through hole structure for inserting a bolt is formed on the connecting ear.

[0018] The beneficial effect of the improvement is that after the connecting ears on the compression ring and the upper connecting plate are aligned, the operator can use the bolt to lock and connect.

[0019] In order to conveniently install the device on a mechanical arm;

[0020] As a further improvement of the above technical solution: a connecting seat is formed on the top of the upper shell, and a through hole structure for inserting a bolt is formed on the connecting seat.

[0021] The beneficial effect of the improvement is that the installation and fixation of the device can be realized by connecting the connecting seat and the mechanical arm through long bolts and multiple nuts.

[0022] In order to avoid the winding of the air pipe of the rotary cylinder during the rotation of the lower shell;

[0023] As a further improvement of the above technical solution: a through hole suitable for installing the straight-through rotary joint is formed on the upper shell.

[0024] The beneficial effects of the improvement are that two tracheas can be connected to the two joints of the straight-through rotary joint respectively, and the trachea of the rotary cylinder is prevented from being wound during the rotation of the lower shell.

[0025] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a sectional view of the utility model;

[0027] Figure 2 It is a structural schematic view of the utility model;

[0028] Figure 3 It is a top view sectional view of the clamping assembly in the utility model;

[0029] Figure 4 It is an enlarged view of A in the utility model;

[0030] In the figure: 1, upper shell; 11, upper connecting plate; 12, connecting seat; 2, lower shell; 21, lower connecting plate; 3, pressing ring; 31, connecting lug; 4, rotating assembly; 41, servo motor; 42, driving shaft; 43, driving gear; 44, inner gear ring; 5, clamping assembly; 51, straight-through rotary joint; 52, rotary cylinder; 53, sun gear; 54, planetary gear; 55, connecting rod; 56, clamping rod. DETAILED DESCRIPTION

[0031] In order to make the skilled in the art better understand the technical solutions of the present application, the present application will be described in detail below in combination with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0032] Example 1:

[0033] As Figure 1A plastic bottle cap rotating device is shown in figure 4, which comprises an upper shell 1, the bottom of which is connected with a pressure ring 3 through bolts, a groove body of the lower shell 2 is formed between the upper shell 1 and the pressure ring 3, a clamping assembly 5 is installed on the lower shell 2, the clamping assembly 5 comprises a rotary air cylinder 52, a sun gear 53 is installed on the rotary shaft of the rotary air cylinder 52, a plurality of planetary gears 54 are connected with the sun gear 53, a connecting rod 55 is installed on the rotary shaft of the planetary gears 54, a clamping rod 56 is installed on one end of the connecting rod 55, a rotating assembly 4 is installed on the upper shell 1, the rotating assembly 4 comprises a servo motor 41, the servo motor 41 drives a driving shaft 42, a driving gear 43 is installed on the driving shaft 42, an internal gear ring 44 is connected with the driving gear 43, the internal gear ring 44 is installed on the lower shell 2, a plurality of clamping rods 56 driven by the rotary air cylinder 52 can be self-centering clamped on different size bottle caps through the driving transmission of the gear structure, the servo motor 41 can drive the whole lower shell 2 to rotate and drive the bottle cap clamped by the clamping rod 56 to rotate the cap efficiently, the number of the planetary gears 54 is three, and the three planetary gears 54 are equidistantly arranged around the axis of the sun gear 53, when the three planetary gears 54 rotate synchronously under the drive of the sun gear 53, the clamping rod 56 is driven to rotate and clamp the bottle cap, so that the bottle cap is clamped in the center, the clamping rod 56 is a cylindrical structure, and the axis of the clamping rod 56 is parallel to the axis of the planetary gear 54, so that the three clamping rods 56 can stably clamp bottle caps of different specifications during rotation, an upper connecting plate 11 is formed on the bottom surface of the upper shell 1, a lower connecting plate 21 is formed on the top surface of the lower shell 2, a circular ring type groove is formed between the upper connecting plate 11 and the pressure ring 3, the lower connecting plate 21 is adaptively installed, the lower shell 2 can stably rotate under the limiting of the pressure ring 3 and the upper shell 1, a plurality of connecting ears 31 are formed on the pressure ring 3 and the upper connecting plate 11, a through hole structure for inserting bolts is formed on the connecting ears 31, after the connecting ears 31 on the pressure ring 3 and the upper connecting plate 11 are opposite, an operator can use bolts to lock and connect, a connecting seat 12 is formed on the top of the upper shell 1, a through hole structure for inserting bolts is formed on the connecting seat 12, a long bolt and a plurality of nuts are used to connect the connecting seat 12 and a mechanical arm to realize the installation and fixation of the device, a through hole for adaptively installing a straight-through rotary joint 51 is formed on the upper shell 1, two air pipes are connected with the two joints of the straight-through rotary joint 51 respectively, so that the air pipes of the rotary air cylinder 52 are prevented from being wound during the rotation of the lower shell 2.

[0034] The working principle of the technical solution is as follows: the device is fixed on a mechanical arm or other mechanical equipment through the connecting seat 12, the device is driven by the mechanical arm to move to the position where the clamping assembly 5 is located on the peripheral side of the bottle cap, then the air circuit electromagnetic valve of the rotary cylinder 52 is switched to drive the rotary rod of the rotary cylinder 52 to rotate, the sun gear 53 is rotated, the sun gear 53 is engaged to drive the three planetary gears 54 to rotate, and then the clamping rod 56 is rotated around the axis of the planetary gear 54, so as to clamp the peripheral side of the bottle cap; then the bottle cap is moved to the bottle body by the clamping rod 56 under the driving of the mechanical arm, when the bottle opening is connected with the bottle body, the rotating assembly 4 is operated to drive the driving gear 43 to rotate through the driving shaft 42, the driving gear 43 is engaged to drive the inner ring gear 44 to rotate, and then the lower shell 2 is rotated as a whole, so as to drive the bottle cap clamped by the clamping rod 56 to rotate to perform the capping work.

[0035] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles, or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles, or devices.

[0036] The principles and implementation modes of the present application are described by using specific examples in this document, and the above examples are only used to help understand the method of the present application and its core idea. The above description is only the preferred implementation mode of the present application, and it should be pointed out that due to the limitation of language expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principles of the present application, or the above technical features can be combined in an appropriate way; these improvements, decorations, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A plastic bottle cap screwing device, characterized by: The utility model relates to a kind of clamp assembly, including upper shell (1), the bottom of the upper shell (1) is bolted with compression ring (3), the slot body of lower shell (2) is formed rotating clamping between the upper shell (1) and compression ring (3), clamping assembly (5) is installed on the lower shell (2), the rotating shaft of the rotating cylinder (52) of the clamping assembly (5) is installed with sun gear (53), the sun gear (53) is engaged with multiple planetary gears (54), the rotary shaft of the planetary gear (54) is installed with connecting rod (55), one end of the connecting rod (55) is installed with clamping rod (56), rotating assembly (4) is installed on the upper shell (1), the rotating assembly (4) includes servo motor (41), the servo motor (41) is driven connection driving shaft (42), driving shaft (42) is installed with driving gear (43), the driving gear (43) is engaged with internal gear (44), and the internal gear (44) is installed on lower shell (2).

2. A plastic bottle cap screwing device according to claim 1, characterized in that: The number of the planetary gears (54) is three, and the three planetary gears (54) are arranged at equal intervals around the axis of the sun gear (53).

3. A plastic bottle cap screwing device according to claim 1, characterized in that: The clamping rod (56) is a cylindrical structure, and the axis of the clamping rod (56) is parallel to the axis of the planetary gear (54).

4. A plastic bottle cap screwing device according to claim 1, characterized in that: The bottom surface of the upper shell (1) is formed with an upper connecting plate (11), the top surface of the lower shell (2) is formed with a lower connecting plate (21), and the annular groove fitting the lower connecting plate (21) is formed between the upper connecting plate (11) and the compression ring (3).

5. A plastic bottle cap screwing device according to claim 1, characterized in that: A plurality of connecting ears (31) are formed on the compression ring (3) and the upper connecting plate (11), and a through hole structure for inserting bolts is formed on the connecting ears (31).

6. A plastic bottle cap screwing device according to claim 1, characterized in that: A connecting seat (12) is formed on the top of the upper shell (1), and a through hole structure for inserting bolts is formed on the connecting seat (12).

7. A plastic bottle cap screwing device according to claim 1, characterized in that: A through hole fitting the straight-through rotary joint (51) is formed on the upper shell (1).

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