Net content metering and calibrating device of quantitative packaging equipment

Abstract

The invention relates to a net content metering and calibrating device of quantitative packaging equipment. Comprising a follow-up mechanism, a guide frame and a standard ultrasonic liquid level detection sensor, when a conveying belt corresponding to the lower portion of a bottle to be detected locally jumps during working, the follow-up mechanism directly transmits the jerk value to the standard ultrasonic liquid level detection sensor so as to drive the standard ultrasonic liquid level detection sensor to synchronously jump for the same distance, and the bottle to be detected is detected. The standard ultrasonic liquid level detection sensor for measuring the liquid level of the liquid in the bottle is linked with the conveying belt and jumps up and down along with the jumping of the surface of the conveying belt, so that the distance between the standard ultrasonic liquid level detection sensor and the upper surface of the conveying belt is constant, and the detection result is prevented from being influenced by the up-and-down jumping of the conveying belt; therefore, the calibration precision is ensured to be higher.

Description

Technical Field

[0001] The invention relates to a net content measurement and calibration device for quantitative packaging equipment. Background Art

[0002] Quantitative packaging equipment enables quantitative filling and packaging of materials. For example, a bottled liquid filling machine consists of a conveyor belt for transporting empty bottles and finished products, a filling system for filling the empty bottles with liquid, and a sealing device for sealing them. Empty bottles are filled as they move along the conveyor belt to the filling system, and then continue along the conveyor belt to the sealing device for sealing. The filling system relies on a metering device to accurately measure the liquid poured into the bottle. However, to ensure consistent liquid volume in the product and avoid errors in the metering module after long-term use, regular calibration of the metering module is required.

[0003] The existing calibration method generally adopts manual sampling followed by manual measurement using sensors or measuring devices. This method has the problems of cumbersome operation, low calibration efficiency and large operating errors. Some technicians also want to directly measure and calibrate the liquid in the bottle online, but because the bottle often jumps or shakes due to the vibration of the conveyor belt during its movement, it is difficult to accurately detect it. Summary of the Invention

[0004] The object of the present invention is to provide a net content measurement and calibration device for quantitative packaging equipment. By linking a standard ultrasonic liquid level detection sensor for measuring the liquid level in a bottle with a conveyor belt so that it jumps up and down following the jump of the conveyor belt surface, the distance between the standard ultrasonic liquid level detection sensor and the upper surface of the conveyor belt is kept constant, thereby avoiding the influence of its detection results due to the up and down jump of the conveyor belt, thereby ensuring higher calibration accuracy.

[0005] The technical solution of the present invention is as follows: A net content measurement and calibration device for quantitative packaging equipment comprises: The following mechanism includes a following frame and a following wheel group. The following frame is an H-shaped structure composed of two vertically arranged sliding rods and a connecting rod connected between the two sliding rods. The following wheel groups are respectively provided at the lower parts of the two sliding rods. The following wheel group includes a following unit symmetrically arranged in an upper and lower direction. The following unit includes a mounting frame and a roller rotatably mounted on the mounting frame. The axis of the roller is parallel to the axis of the driving roller of the conveyor belt. The rollers of the two following units are respectively in rolling cooperation with the upper and lower surfaces of the upper belt body of the conveyor belt. A tension spring is connected between the two mounting frames. The tension spring provides an elastic force for the two rollers in a direction toward each other. The two following wheel groups are respectively used to cooperate with the side edges of both sides of the upper belt body. The guide frame includes two sliding sleeves respectively arranged in a one-to-one correspondence with the upper ends of the two sliding rods. The sliding sleeves are coaxially arranged with the corresponding sliding rods. The sliding sleeves are slidingly matched with the upper ends of the sliding rods. The two sliding sleeves are detachably fixedly connected to the frame of the conveyor belt through fixed rods. A standard ultrasonic liquid level detection sensor is installed and fixed on the connecting rod, with its axis perpendicular to the connecting rod and pointing vertically downwards towards the bottle mouth on the conveyor belt to detect the liquid level in the bottle; During operation, when the conveyor belt corresponding to the bottle to be tested jumps locally, the jumping amount is directly transmitted to the standard ultrasonic liquid level detection sensor through the follow-up mechanism, thereby driving the standard ultrasonic liquid level detection sensor to jump synchronously by the same distance.

[0006] Based on the above solution, a further improvement is made as follows: the roller is made of a rigid material. A rigid roller can minimize the effect of the roller's own deformation on the transmitted displacement, further avoiding adverse effects on calibration accuracy.

[0007] Based on the above solution, a further improvement is made as follows: the mounting frame is a U-shaped structure, on which two rollers are symmetrically arranged. The double roller structure makes the contact and connection more stable.

[0008] Based on the above solution, a further improvement is made as follows: the tension spring is located in the opening of the U-shaped structure of the mounting frame, and the side wall of the U-shaped structure is used as a guide for the tension spring.

[0009] Based on the above solution, a further improvement is made as follows: the position of the standard ultrasonic liquid level detection sensor can be adjusted along the length direction of the connecting rod.

[0010] Based on the above solution, further improvements are made as follows, including a control terminal, the control terminal including a wireless receiving module, the standard ultrasonic liquid level detection sensor is connected to a wireless transmitting module, and the standard ultrasonic liquid level detection sensor transmits data to the control terminal in real time through its wireless transmitting module.

[0011] The beneficial effects of this technical solution are as follows: When in use, a net content measurement and calibration device for quantitative packaging equipment can be installed with a follower mechanism on a conveyor belt and located downstream of a filling system. The device can directly perform online detection on bottles filled with liquid, measure the liquid level in the bottle, and convert it into the volumetric net content of the liquid after calculation. The specific principle is as follows: the follower mechanism is limited by a guide frame so that it can only move up and down as a whole, and the follower mechanism is in contact with the upper surface of the conveyor belt below the bottle to be measured through the roller of the follower unit. When the upper surface of the conveyor belt fluctuates, the vibration is transmitted to the standard ultrasonic liquid level detection sensor through the sliding rod and the connecting rod, thereby driving the standard ultrasonic liquid level detection sensor to jump synchronously in the same direction and the same distance, thereby ensuring the constant distance between the standard ultrasonic liquid level detection sensor and the upper surface of the conveyor belt corresponding to the bottle to be measured, thereby avoiding measurement errors of the standard ultrasonic liquid level detection sensor caused by the fluctuation of the conveyor belt upper surface. In addition, the setting of the tension spring ensures that the roller is always in close contact with the upper surface of the conveyor belt, preventing the roller from jumping relative to the upper surface of the conveyor belt, further avoiding the generation of errors and further ensuring the accuracy of calibration. Compared with the existing technology, the solution of the present application can realize online calibration without stopping the machine, and the calibration accuracy and efficiency are very high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a specific embodiment of a net content measurement and calibration device for quantitative packaging equipment of the present invention; Figure 2 for Figure 1 A partial enlarged view of point A in the middle; Figure 3 for Figure 1 corresponding side view; Figure 4 for Figure 3 A partial enlarged view of point B in the middle; In the figure: 1-conveyor belt, 11-upper belt body, 12-lower belt body, 13-driving roller, 14-driven roller, 15-guide plate, 2-filling system, 3-bottle, 4-follower mechanism, 41-follower frame, 411-sliding rod, 412-connecting rod, 42-follower wheel group, 421-follower unit, 4211-mounting frame, 4212-roller, 4213-tension spring, 5-guide frame, 51-sliding sleeve, 52-fixing rod, 6-standard ultrasonic liquid level detection sensor, 7-sealing device. DETAILED DESCRIPTION

[0013] In order to make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present invention and are not intended to limit the present invention. That is, the embodiments described herein are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in various different configurations.

[0014] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely intended to represent selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0015] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0016] The features and performance of the present invention are further described in detail below with reference to the embodiments.

[0017] A specific embodiment of a net content measurement and calibration device for quantitative packaging equipment of the present invention: Figure 1-4 As shown in the figure, the net content measurement and calibration device of the quantitative packaging equipment of the present application is a device for measuring and calibrating the net content of the liquid poured into the bottle 3 by the quantitative packaging equipment (such as a filling machine). The device mainly includes a controller terminal (not shown in the figure), a follower mechanism 4, a guide frame 5 and a standard ultrasonic liquid level detection sensor 6. Figure 1 As shown, the calibration device of the present application is installed between the filling system 2 and the sealing device 7 of the quantitative packaging machine, and is located on the conveyor belt 1. The guide frame 5 of the device is fixed relative to the frame of the conveyor belt 1 or relative to the frame of the quantitative packaging machine, and the follower mechanism 4 is in contact with the upper belt body 11 of the conveyor belt 1 to jump up and down with the upper belt body 11, thereby driving the standard ultrasonic liquid level detection sensor 6 to jump up and down synchronously.

[0018] Specifically, if Figure 2-4 As shown, the follower mechanism 4 includes a follower frame 41 and a follower wheel group 42. The follower frame 41 is an H-shaped structure composed of two vertically arranged sliding rods 411 and a connecting rod 412 connected between the two sliding rods 411. The lower parts of the two sliding rods 411 are respectively provided with the follower wheel group 42. The follower wheel group 42 includes a follower unit 421 symmetrically arranged above and below. The follower unit 421 includes a mounting frame 4211 and a connecting rod 412 mounted on the mounting frame 4211 through a rotating shaft. The rollers 4212 have axes parallel to the axis of the drive roller 13 of the conveyor belt 1. The rollers 4212 of the two follower units 421 respectively roll against the upper and lower surfaces of the upper belt body 11 of the conveyor belt 1. A tension spring 4213 is connected between the two mounting brackets 4211, providing an elastic force that forces the two rollers 4212 toward each other. The two follower wheel assemblies 42 are respectively configured to engage the side edges of the upper belt body 11. The follower mechanism 4 is preferably made of stainless steel, with the ends of the tension spring 4213 welded to the two mounting brackets 4211. The rollers 4212 are made of a rigid material. This rigid material minimizes the effect of their own deformation on the transmitted displacement, further preventing adverse effects on calibration accuracy. The mounting bracket 4211 is U-shaped, with the two rollers 4212 symmetrically positioned thereon. The dual roller 4212 structure ensures more stable contact and connection. The tension spring 4213 is located within the opening of the U-shaped structure of the mounting bracket 4211 , with the sidewalls of the U-shaped structure serving as a guide for the tension spring 4213 .

[0019] like Figure 2 、 3 As shown, the guide frame 5 includes two sliding sleeves 51 respectively arranged in one-to-one correspondence with the upper ends of the two sliding rods 411. The sliding sleeves 51 are coaxially arranged with the corresponding sliding rods 411. The sliding sleeves 51 and the upper ends of the sliding rods 411 are guided and slidably matched. The two sliding sleeves 51 are detachably fixedly connected to the frame of the conveyor belt 1 through fixed rods 52 respectively; the standard ultrasonic liquid level detection sensor 6 can adjust its position along the length direction of the connecting rod 412.

[0020] The standard ultrasonic liquid level detection sensor 6 is mounted and fixed on the connecting rod 412, and includes a transmitter and a receiver. The axis is perpendicular to the connecting rod 412 and is arranged vertically downward corresponding to the bottle mouth of the bottle to be tested 3 on the conveyor belt 1 to detect the liquid level in the bottle 3; the standard ultrasonic liquid level detection sensor 6 transmits high-frequency ultrasonic pulses to the surface of the liquid in the bottle. After the ultrasonic wave encounters the liquid surface, it is reflected back to the sensor. The receiver captures the reflected signal and transmits it to the control terminal through the wireless transmission module. After data calculation and processing, the volume data in the bottle is obtained and compared with the set data of the filling system 2 to achieve the purpose of calibration.

[0021] During operation, when the conveyor belt 1 corresponding to the bottle 3 to be tested partially jumps, the jumping amount is directly transmitted to the standard ultrasonic liquid level detection sensor 6 via the follower mechanism 4, so as to drive the standard ultrasonic liquid level detection sensor 6 to jump synchronously by the same distance.

[0022] The control terminal includes a wireless receiving module, and the standard ultrasonic liquid level detection sensor 6 is connected to a wireless transmitting module. The standard ultrasonic liquid level detection sensor 6 transmits data to the control terminal in real time through its wireless transmitting module.

[0023] When in use, the follower mechanism 4 can be installed on the conveyor belt 1 and located downstream of the filling system 2. It can directly perform online detection on the bottle 3 filled with liquid, measure the liquid level in the bottle 3, and convert it into the net volume content of the liquid after calculation. The specific principle is: the follower mechanism 4 relies on the limit of the guide frame 5, so that it can only move up and down as a whole, and the follower mechanism 4 is in contact with the upper surface of the conveyor belt 1 below the bottle 3 to be tested through the roller 4212 of the follower unit 421. When the upper surface of the conveyor belt 1 jumps, the signal is transmitted to the standard ultrasonic level detector through the sliding rod 411 and the connecting rod 412. The measuring sensor 6 is driven by the standard ultrasonic liquid level detection sensor 6, thereby driving the standard ultrasonic liquid level detection sensor 6 to jump synchronously in the same direction and the same distance, thereby ensuring the constant relationship between the standard ultrasonic liquid level detection sensor 6 and the upper surface of the conveyor belt 1 corresponding to the bottle 3 to be measured, thereby avoiding the measurement error of the standard ultrasonic liquid level detection sensor 6 caused by the jumping of the upper surface of the conveyor belt 1. In addition, through the setting of the tension spring 4213, the roller 4212 is always in close contact with the upper surface of the conveyor belt 1, avoiding the roller 4212 from jumping relative to the upper surface of the conveyor belt 1, further avoiding the generation of errors, and further ensuring the accuracy of calibration. Compared with the existing technology, the solution of the present application can realize online non-stop calibration, and the calibration accuracy is very high, and the calibration efficiency is very high.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the description and drawings of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A net content measurement and calibration device for quantitative packaging equipment, characterized in that: include: A follower mechanism is used to be arranged on the conveyor belt downstream of the filling system, including a follower frame and a follower wheel group, the follower frame is an H-shaped structure composed of two vertically arranged sliding rods and a connecting rod connected between the two sliding rods, the lower parts of the two sliding rods are respectively provided with the follower wheel group, the follower wheel group includes a follower unit symmetrically arranged in the upper and lower parts, the follower unit includes a mounting frame and a roller rotatably assembled on the mounting frame, the axis of the roller is parallel to the axis of the driving roller of the conveyor belt, the rollers of the two follower units are respectively in rolling cooperation with the upper and lower surfaces of the upper belt body of the conveyor belt, a tension spring is connected between the two mounting frames, the tension spring provides an elastic force to the two rollers in the direction of approaching each other, and the two follower wheel groups are respectively used to cooperate with the side edges of both sides of the upper belt body; The guide frame includes two sliding sleeves respectively arranged in a one-to-one correspondence with the upper ends of the two sliding rods. The sliding sleeves are coaxially arranged with the corresponding sliding rods. The sliding sleeves are slidingly matched with the upper ends of the sliding rods. The two sliding sleeves are detachably fixedly connected to the frame of the conveyor belt through fixed rods. A standard ultrasonic liquid level detection sensor is installed and fixed on the connecting rod, with its axis perpendicular to the connecting rod and pointing vertically downwards towards the bottle mouth on the conveyor belt to detect the liquid level in the bottle; During operation, when the conveyor belt corresponding to the bottle to be tested jumps locally, the jumping amount is directly transmitted to the standard ultrasonic liquid level detection sensor through the follow-up mechanism, thereby driving the standard ultrasonic liquid level detection sensor to jump synchronously by the same distance.

2. The net content measurement and calibration device for quantitative packaging equipment according to claim 1, characterized in that: The roller is made of a rigid material.

3. The net content measurement and calibration device for quantitative packaging equipment according to claim 1, characterized in that: The mounting frame is a U-shaped structure, on which the two rollers are symmetrically arranged.

4. The net content measurement and calibration device for quantitative packaging equipment according to claim 3, characterized in that: The tension spring is located within the opening of the U-shaped structure of the mounting bracket, with the sidewalls of the U-shaped structure serving as a guide for the tension spring.

5. The net content measurement and calibration device for quantitative packaging equipment according to claim 1, characterized in that: The standard ultrasonic level detection sensor can be adjusted along the length of the connecting rod.

6. The net content measurement and calibration device for quantitative packaging equipment according to claim 1, characterized in that: The control terminal includes a wireless receiving module. The standard ultrasonic liquid level detection sensor is connected to the wireless transmitting module. The standard ultrasonic liquid level detection sensor transmits data to the control terminal in real time through the wireless transmitting module.

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