A bottle self-rotation drive device and its working method

Abstract

This invention relates to the field of bottle inspection technology, and in particular to a bottle rotation drive device, comprising two opposing and spaced-apart conveying components, forming a clamping space between the two conveying components for holding the bottle. Each conveying component has a conveyor chain at both ends, and the conveying components are electrically connected to a PLC controller. The technical solution of this invention uses the conveying components to drive the bottle forward. When the bottle reaches a designated position, the conveying components rotate synchronously in opposite directions at the same speed, thereby achieving high-speed rotation or directional rotation of the bottle. It has advantages such as low noise, small size, and low cost, reducing the footprint of the device and lowering costs, and has broad application prospects.

Description

Technical Field

[0001] This invention relates to the field of bottle detection technology, and in particular to a bottle rotation drive device and its working method. Background Technology

[0002] Cylindrical glass bottles are a common type of container, and they may have defects after molding. Therefore, before filling, it is necessary to perform dynamic inspections on the bottles, such as crack detection, ellipticity detection, local verticality detection, wall thickness detection, or directional rotation of the bottles, to ensure product quality.

[0003] Currently, bottle inspection is divided into two types: stepping and continuous following. The stepping type refers to the bottle moving forward a fixed distance each time under the drive of a designated mold. At each point, the external cam will actively contact the bottle and drive the bottle to rotate randomly. However, the disadvantages are slow speed, high noise, low changeover efficiency and cumbersome process. Moreover, the cam must make hard contact with the bottle, which can easily cause damage to the bottle. The continuous following type uses several trays to carry the bottle. Each tray rotates independently under the drive of a motor, thereby driving the bottle to rotate. Its speed can reach 5-6 times that of a rotary machine. However, the disadvantages are high cost and large equipment size. Therefore, there is an urgent need for a rotation drive device that is fast, low noise, small in size and low in cost. Summary of the Invention

[0004] The first objective of this invention is to provide a bottle rotation drive device, which can realize high-speed rotation or directional rotation of the bottle and has the advantages of low noise, small size and low cost; the second objective of this invention is to provide a working method of the bottle rotation drive device.

[0005] The present invention provides a bottle rotation drive device, including two opposite and spaced-apart conveying components, forming a clamping space between the two conveying components for clamping the bottle, and conveying chains at both ends of the conveying components, and the conveying components are electrically connected to a PLC controller.

[0006] Furthermore, the conveying assembly includes a frame, and two frames are provided with bottle clamping chains on their adjacent sides. Each of the two frames is provided with a drive assembly for driving the bottle clamping chains to rotate.

[0007] Furthermore, the drive assembly includes a servo motor, and pulleys are rotatably connected to both ends of the bottle clamping chain. The output end of the servo motor is connected to one of the pulleys, and the servo motor is electrically connected to the PLC controller.

[0008] Furthermore, the drive motor corresponding to the conveyor chain is equipped with a rotary encoder, and the frame is equipped with a photoelectric sensor. The photoelectric sensor is located at the beginning of the bottle clamping chain, and both the rotary encoder and the photoelectric sensor are electrically connected to the PLC controller.

[0009] Furthermore, each of the two racks is provided with a calibration component on one side close to the other, and a detection photoelectric sensor is provided on the top of the rack near the calibration component. Both the detection photoelectric sensor and the calibration component are electrically connected to the PLC controller.

[0010] Furthermore, the correction assembly includes a telescopic rod connected to the frame, with one end of the telescopic rod near the bottle body rotatably connected to two limiting wheels. The axis of rotation of the limiting wheels is parallel to the axis of the bottle body, and the two limiting wheels can be engaged with the side wall of the bottle body.

[0011] Furthermore, each of the two frames is provided with a limiting component above the calibration component, and the limiting component corresponds to the upper part of the bottle.

[0012] Furthermore, a material-picking robotic arm is provided at the conveying end of the bottle-clamping chain, the material-picking robotic arm is electrically connected to the PLC controller, and a robotic hand is provided at one end of the material-picking robotic arm near the bottle-clamping chain.

[0013] The present invention also provides a method for operating a bottle rotation drive device, comprising the following steps: the conveyor chain conveys the bottle to the beginning of the conveyor assembly, the speed of the conveyor assembly is kept consistent with the speed of the conveyor chain, the bottle is clamped by two conveyor assemblies, the bottle is driven forward and the speed is rapidly reduced, the speed of the bottle is 0 when it reaches the designated position, and then the two conveyor assemblies rotate synchronously in opposite directions at the same speed to drive the bottle to rotate in place.

[0014] Furthermore, the operating method of the bottle body rotation drive device includes the following steps:

[0015] S1. The conveyor chain transports the bottle to the beginning of the bottle clamping chain, and the servo motor drives the bottle clamping chain to rotate, while keeping the speed of the bottle clamping chain consistent with the speed of the conveyor chain.

[0016] S2. The bottle is held by two bottle clamping chains, which move the bottle forward and decelerate rapidly. When the bottle enters the clamping space, the PLC controller determines whether the distance between the current bottle and the next bottle is greater than or equal to the time required for the current bottle to rotate. If not, the bottle clamping chains maintain a synchronous speed with the conveyor chains to convey the current bottle out, and the robotic arm removes the current bottle.

[0017] S3. If the distance between the current bottle and the next bottle is sufficient for the time required for the current bottle to rotate, after the current bottle enters the clamping space, the bottle clamping chain immediately decelerates and stops the current bottle at the designated position. The detection photoelectric sensor determines whether the current bottle is tilted. If so, the correction component is used to correct the bottle. If not, the next step is performed.

[0018] S4. After the bottle reaches the designated position, the servo motor drives the two bottle clamping chains to rotate synchronously in opposite directions at the same speed, so as to make the bottle rotate in place.

[0019] The beneficial effects of this invention are:

[0020] The technical solution of this invention uses a conveying component to drive the bottle forward. When the bottle reaches the designated position, the conveying component rotates synchronously in the opposite direction at the same speed, thereby realizing the high-speed rotation or directional rotation of the bottle. It has a simple structure, strong practicality, and advantages such as low noise, small size, and low cost. It reduces the footprint of the device, lowers the cost, and has broad application prospects. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the bottle rotation drive device in Embodiment 1 of the present invention;

[0023] Figure 2 This is a top view of the bottle rotation drive device in Embodiment 1 of the present invention;

[0024] Figure 3 This is a front view of the bottle rotation drive device in Embodiment 1 of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Servo motor, 2-Bottle clamping chain, 3-Bottle body, 4-Correction component, 5-Limiting component, 6-Conveyor chain, 7-Detection photoelectric sensor, 8-Telescopic rod, 9-Limiting wheel, 10-Pulley. Detailed Implementation

[0027] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0029] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Example 1

[0031] Depend on Figures 1 to 3As shown, a bottle rotation drive device includes two opposing frames. A servo motor 1 is mounted on the top of each frame. A bottle clamping chain 2 is located on the side of each frame closest to the other. Pulleys 10 are rotatably connected to both ends of the bottle clamping chain 2. One of the pulleys 10 is connected to the output end of the servo motor 1, which provides power to the bottle clamping chain 2. A clamping space for holding bottles 3 is formed between the two bottle clamping chains 2. Conveyor chains 6 are located at both ends of the bottle clamping chain 2. A rotary encoder is mounted on the drive motor corresponding to the conveyor chain 6, and the running speed of the conveyor chain 6 is determined by detecting the rotational speed of the drive motor. A photoelectric sensor is located on the frame near the beginning of the conveying process. A PLC controller processes the signals received from the photoelectric sensor and the rotary encoder to calculate the distance between the bottle 3 on the bottle clamping chain 2 and the bottle 3 about to enter the bottle clamping chain 2, facilitating the control of the running speed of the conveyor chain 6 to ensure stable operation of subsequent bottles 3.

[0032] Each of the two frames has a correction component 4 located on one side closest to each other, below the midpoint of the bottle clamping chain 2. The two correction components 4 are positioned opposite each other and include a telescopic rod 8 connected to the frame. The end of the telescopic rod 8 near the bottle body 3 is rotatably connected to two limiting wheels 9. The axis of rotation of the limiting wheels 9 is parallel to the axis of the bottle body 3, and the two limiting wheels 9 can be engaged with the side wall of the bottle body 3. The two correction components 4 work together to correct the bottle body 3 to a vertical position, preventing it from tilting and tipping over during subsequent rotation. The limiting wheels 9 secure the bottle body without affecting its rotation.

[0033] Each of the two frames has a limiting component 5 located above the correction component 4. The limiting component 5 has the same structure as the correction component 4, including a telescopic rod 8 connected to the frame. The end of the telescopic rod 8 near the bottle body 3 is rotatably connected to two limiting wheels 9. The axis of rotation of the limiting wheels 9 is parallel to the axis of the bottle body 3, and the two limiting wheels 9 can be engaged with the side wall of the bottle body 3. The limiting components 5 correspond to the upper conical part of the bottle body 3. When the two limiting components 5 are engaged with the upper part of the bottle body 3, they can effectively prevent the bottle body 3 from moving upwards, ensuring the posture and position of the bottle body 3.

[0034] A detection photoelectric sensor 7 is located at the top of the frame near the calibration component 4 to detect whether the bottle is tilted.

[0035] A picking robot arm is installed at the end of the bottle-clamping chain 2. A robotic arm is installed at one end of the picking robot arm near the bottle-clamping chain 2, which can grab and reject unqualified bottles 3. The servo motor 1, rotary encoder, photoelectric sensor, detection photoelectric sensor 7 and picking robot arm are all connected to the PLC controller.

[0036] The working method of the above-mentioned bottle rotation drive device includes the following steps:

[0037] S1. Bottle 3 enters the conveyor chain 6 and triggers the photoelectric sensor. The conveyor chain 6 transports the bottle 3 to the beginning of the bottle clamping chain 2. The servo motor 1 drives the bottle clamping chain 2 to rotate and keeps the speed of the bottle clamping chain 2 consistent with the speed of the conveyor chain 6.

[0038] S2. When a bottle 3 is already rotating at high speed in the clamping space; the PLC controller receives the signals sent by the rotary encoder and photoelectric sensor, calculates the distance between the bottle 3 about to enter the clamping space and the currently clamped bottle 3, and calculates the time t1 required for the bottle 3 to rotate using formula (1), as shown in formula (1) below:

[0039] t1=ω / V (1);

[0040] ω is the angle that bottle 3 needs to rotate in the clamping space, and V is the rotational speed that bottle 3 needs to achieve in the clamping space.

[0041] The time t2 required for the linear displacement velocity of bottle 3 to recover from 0 to the same speed as the conveyor chain 6 after completing its rotation is calculated using formula (2). Formula (2) is shown below:

[0042] X = vt² + 1 / 2at²² (2);

[0043] X is half the length of the bottle clamping chain 2; v is the initial linear displacement velocity of the bottle 3 after its rotation is complete, which is 0 here; a is the acceleration of the servo motor 1 during the speed change process.

[0044] The time when t2 and bottle 3 enter the clamping space between the bottle clamping chain 2 and the linear displacement velocity drops to 0 is the same. Therefore, the total time required for bottle 3 to complete the required action in the self-rotation system is t = t1 + 2t2.

[0045] S3. Two bottle-clamping chains 2 are used to clamp the bottle body 3 and drive the bottle body 3 forward. When the bottle body 3 enters the clamping space, the PLC controller determines whether the distance between the current bottle body 3 and the next bottle body 3 is sufficient for the next bottle body 3 to travel to the position of the current bottle body 3 to be greater than or equal to the time required for the current bottle body 3 to rotate. If not, the bottle-clamping chains 2 maintain a synchronous speed with the conveyor chain and transmit the current bottle body 3 out and send a signal to the outside. The robotic arm then removes the current bottle body 3 to ensure smooth detection of subsequent bottles 3.

[0046] If the distance between the current bottle 3 and the next bottle 3 meets the requirements, after the current bottle 3 enters the clamping space, the bottle clamping chain 2 immediately slows down and stops the current bottle 3 precisely at the correction component 4. The photoelectric sensor 7 determines whether the current bottle 3 is tilted. If so, the correction component 4 is used to correct the bottle 3. If not, the next step is performed.

[0047] S4. After the bottle body 3 reaches the calibration component 4 and the bottle body orientation is confirmed to be correct, the servo motor 1 drives the two bottle clamping chains 2 to rotate synchronously in opposite directions at the same speed, thereby realizing the high-speed rotation or directional rotation of the bottle body 3; the full rotation of the bottle body 3 facilitates the detection of the quality of the bottle body 3;

[0048] Then repeat steps S2-S4 to achieve continuous monitoring of bottle 3.

[0049] The device provided by this invention has the advantages of low noise, small size and low cost, which reduces the footprint of the device and lowers the cost, and has broad application prospects.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for operating a bottle rotation drive device, characterized in that: The bottle rotation drive device includes two opposite and spaced-apart conveying components, which are electrically connected to a PLC controller. A clamping space for holding the bottle is formed between the two conveying components. Each conveying component includes a frame, and bottle clamping chains are provided opposite each other on the sides of the two frames that are close to each other. Each frame is provided with a drive component for driving the bottle clamping chains to rotate. The drive component includes a servo motor. Pulleys are sleeved at both ends of the bottle clamping chains. The output end of the servo motor is connected to one of the pulleys. The servo motor is electrically connected to the PLC controller. Both ends of the conveying assembly are provided with conveyor chains, and the two frames are provided with correction components on the side that is close to each other. A detection photoelectric sensor is provided on the top of the frame near the correction component. The detection photoelectric sensor and the correction component are both electrically connected to the PLC controller. The bottle clamping chain conveyor is equipped with a material picking robot arm at the end of the conveyor. The material picking robot arm is electrically connected to the PLC controller. A robot hand is provided at one end of the material picking robot arm near the bottle clamping chain conveyor. The operation method of the bottle body rotation drive device includes the following steps: S1. The conveyor chain transports the bottle to the beginning of the bottle clamping chain, and the servo motor drives the bottle clamping chain to rotate, while keeping the speed of the bottle clamping chain consistent with the speed of the conveyor chain. S2. The bottle is held by two bottle clamping chains and moved forward. When the bottle enters the clamping space, the PLC controller determines whether the distance between the current bottle and the next bottle is greater than or equal to the time required for the current bottle to rotate. If not, the bottle clamping chains maintain a synchronous speed with the conveyor chains to convey the current bottle out, and the robotic arm removes the current bottle. S3. If the distance between the current bottle and the next bottle is sufficient for the time required for the current bottle to rotate, after the current bottle enters the clamping space, the bottle clamping chain immediately decelerates and stops the current bottle at the designated position. The detection photoelectric sensor determines whether the current bottle is tilted. If so, the correction component is used to correct the bottle. If not, the next step is performed. S4. The servo motor drives the two bottle clamping chains to rotate synchronously in opposite directions at the same speed, so as to drive the bottle to rotate in place.

2. The operating method of the bottle body rotation drive device according to claim 1, characterized in that, The drive motor corresponding to the conveyor chain is equipped with a rotary encoder, and the frame is equipped with a photoelectric sensor. The photoelectric sensor is located at the beginning of the bottle clamping chain. Both the rotary encoder and the photoelectric sensor are electrically connected to the PLC controller.

3. The operating method of the bottle body rotation drive device according to claim 1, characterized in that, The correction assembly includes a telescopic rod connected to the frame. One end of the telescopic rod near the bottle body is rotatably connected to two limiting wheels. The axis of rotation of the limiting wheels is parallel to the axis of the bottle body, and the two limiting wheels can be locked onto the side wall of the bottle body.

4. The working method of the bottle body rotation drive device according to claim 1, characterized in that, Each of the two frames is provided with a limiting component above the calibration component, and the limiting component corresponds to the upper part of the bottle.

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