Metering device convenient for reading metering data and used for packaging material preparation

Abstract

The invention relates to the technical field of metering, in particular to a metering device convenient for reading metering data and used for packaging material preparation, the metering device comprises a transparent metering container, the bottom end of the metering container is provided with a discharge port, and the inner wall of the discharge port is provided with a sealing plug in an airtight manner. The temperature difference between the raw materials for package preparation and the heating rod is detected through the infrared thermometer, the liquid level height of the raw materials for package preparation can be accurately determined, the heating power of the heating rod is increased in the measurement process, the temperature of the heating rod is far higher than that of the raw materials for package preparation, and the obvious temperature difference is formed. Therefore, the liquid level of raw materials for package preparation can be accurately measured through the infrared thermometer, in addition, when the infrared emitter just rises to the position above the liquid level, infrared rays can directly reach the receiver, and when the infrared rays are below the liquid level, the infrared rays are absorbed or reflected by liquid, and the receiver cannot receive signals. Therefore, the height of the liquid level is further confirmed by monitoring when the infrared receiver starts to receive the signal, and the two methods are combined for use.

Description

Technical Field

[0001] This invention relates to the field of metrology, and more specifically to a metrology device for preparing packaging materials that facilitates the reading of metrological data. Background Technology

[0002] Measuring devices are used to measure and record various physical quantities, such as mass, volume, and flow rate. These measurements are crucial for ensuring the efficiency, safety, and product quality of production processes. Measuring devices are widely used in many fields, including chemical, pharmaceutical, energy, and food and beverage industries. For example, in the production of packaging materials, measuring devices can be used to accurately measure the amount of raw materials to control the proportions.

[0003] Existing packaging material metering devices typically rely on visual observation of scale lines on the outside of the container to determine the liquid level. However, because the raw materials used in packaging material preparation are viscous, they tend to stick to the inner wall of the container. This sticking can interfere with visual observation, potentially leading to significant errors and making it difficult to obtain accurate measurements. This is especially problematic when precise control of the raw material ratio is required. Such deviations directly impact product quality and production efficiency. Furthermore, the fine scale lines make it difficult for the human eye to read the data. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a metering device for packaging material preparation that facilitates the reading of measurement data, effectively solving the problem that raw materials for packaging preparation that adhere to the inner wall of containers can affect human visual observation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a metering device for preparing packaging materials that facilitates reading measurement data, including a transparent metering container, wherein a discharge port is provided at the bottom end of the metering container, and a sealing plug is provided on the inner wall of the discharge port in an airtight manner; The measuring mechanism includes a moving block driven up and down. An infrared thermometer and an infrared transmitter are fixedly connected to the outer wall of the moving block near the measuring container. An infrared receiver is embedded in the inner wall of the measuring container away from the moving block. A heating rod is fixedly connected to the inner bottom wall of the measuring container. The measuring mechanism also includes a reading component for easy data reading. An auxiliary measuring mechanism includes a cleaning plate for cleaning the inner wall of the measuring container and the outer wall of the heating plate. The cleaning plate is polygonal, and each side of the cleaning plate has a sliding groove. An applicator sponge for applying anti-sticking liquid is slidably connected to the inner wall of the sliding groove. A cleaning opening is provided at the center of the cleaning plate, and an annular applicator sponge for applying anti-sticking liquid to the outer wall of the heating rod is fixedly connected to the inner wall of the cleaning opening. A supplementary component is fixedly connected to the top of the cleaning plate.

[0006] Preferably, the metering mechanism further includes a plurality of support legs fixedly connected to the bottom end of the metering container, wherein a support plate is fixedly connected to the outer wall of two of the support legs, an extension plate is fixedly connected to the outer wall of the metering container near the support plate, a motor is fixedly connected to the bottom end of the support plate, a reciprocating lead screw is fixedly connected to the output end of the motor, a limit rod is fixedly connected between the support plate and the extension plate, the moving block is sleeved on the outer wall of the reciprocating lead screw, and the limit rod slides through the moving block.

[0007] Preferably, the reading component includes an extension rod fixedly connected to the outer wall of the moving block, a scale post fixedly connected between the support plate and the extension plate, a scale ring fixedly connected to the other end of the extension rod and slidingly contacting the outer wall of the scale post, and a spiral magnifying glass fixedly connected to the outer wall of the extension rod, the spiral magnifying glass being located on the outer periphery of the scale ring.

[0008] Preferably, a resistance plate is fixedly connected between the support plate and the extension plate. A conductive sheet that slides in contact with the resistance plate is fixedly connected to the outer wall of the moving block on the side away from the extension rod. The conductive sheet and the resistance plate are electrically connected to a PLC controller to form a first reading circuit. The conductive sheet and the resistance plate constitute a sliding rheostat. During the upward sliding of the conductive sheet on the resistance plate, the resistance of the sliding rheostat in the first reading circuit gradually decreases. The PLC controller is electrically connected to an infrared receiver, an infrared thermometer, and an infrared transmitter to form a second reading circuit. A display screen that is electrically connected to the PLC controller is fixedly connected to the outer wall of the measuring container.

[0009] Preferably, the auxiliary metering mechanism includes a support frame fixedly connected to the top of the metering container, a multi-stage electric telescopic rod fixedly connected to the bottom of the support frame, the telescopic end of the multi-stage electric telescopic rod being fixedly connected to the top of the cleaning plate, and a U-shaped heating plate fixedly connected to the bottom of the cleaning plate.

[0010] Preferably, a partition is fixedly connected to the inner wall of the sliding groove, a rotating rod is rotatably connected to the inner wall of the sliding groove, a rotating plate is fixedly connected to the outer wall of the rotating rod, the upper end of the partition slides in contact with the bottom end of the application sponge, the bottom end of the partition slides in contact with an adjusting block, and the front end of the adjusting block is inclined, connecting grooves are provided at both the upper and lower ends of the partition, multiple springs are fixedly connected to the inner wall of the connecting groove, and a connecting plate is fixedly connected to the other end of the spring, two connecting plates are fixedly connected to the bottom end of the application sponge and the top end of the adjusting block respectively, and the upper and lower ends of the rotating plate contact the application sponge and the adjusting block respectively.

[0011] Preferably, the replenishment component includes a replenishment box fixedly connected to the top of the cleaning plate, a plurality of injection ports are provided between the replenishment box and the sliding groove, a first electromagnetic metering valve is provided in the injection port, a replenishment ring is fixedly connected to the top of the cleaning plate, an outlet pipe is fixedly connected inside the replenishment ring, a second electromagnetic metering valve is provided in the outlet pipe, the outlet pipe contacts the top of the annular applicator, and both the replenishment box and the replenishment ring are filled with anti-sticking liquid.

[0012] Preferably, the bottom end of the cleaning plate is provided with an inclined air outlet, the inner circumferential wall of the cleaning port is provided with a cleaning ring air outlet, the top end of the cleaning plate is provided with a ventilation chamber connected to the inclined air outlet and the cleaning ring air outlet, the top end of the cleaning plate is fixedly connected to an exhaust pump, the output end of the exhaust pump is fixedly connected to an exhaust pipe, the other end of the exhaust pipe is connected to the ventilation chamber, and the PLC controller is electrically connected to the multi-stage electric telescopic rod, the exhaust pump, and the U-shaped heating plate to form a control loop.

[0013] The technical solution provided by this invention has the following advantages compared with the known prior art: By detecting the temperature difference between the packaging preparation raw materials and the heating rod using an infrared thermometer, the liquid level of the packaging preparation raw materials can be accurately determined. The process involves increasing the heating power of the heating rod during measurement, causing its temperature to be significantly higher than that of the packaging preparation raw materials, creating a clear temperature difference. Therefore, the liquid level of the packaging preparation raw materials can be accurately measured using an infrared thermometer. Furthermore, when the infrared emitter just rises above the liquid surface, the infrared light can directly reach the receiver. However, below the liquid surface, the infrared light is absorbed or reflected by the liquid, and the receiver cannot receive the signal. Therefore, by monitoring when the infrared receiver begins to receive the signal, the liquid level can be further confirmed. The combined use of these two methods ensures high measurement accuracy.

[0014] As the cleaning plate moves downwards, an anti-sticking liquid is automatically applied to the inner wall of the measuring container. This reduces the likelihood of packaging preparation materials adhering to the inner wall of the measuring container. Then, as the cleaning plate moves downwards a second time, an exhaust pump blows air through inclined and circular air outlets onto the inner wall of the measuring container and the outer wall of the heating rod, cleaning the packaging preparation materials from the inner wall of the measuring container and the heating rod. This prevents the packaging preparation materials on the inner wall of the measuring container from affecting the detection, making the measurement more accurate.

[0015] The moving block drives the infrared thermometer to move the scale ring on the scale column while measuring and detecting. The scale is then magnified by a circular magnifying glass, making it easier for operators to read and improving the convenience of reading. It also drives the conductive sheet to slide on the resistance plate. By detecting the current passing through the sliding rheostat, the liquid level of the raw materials for packaging preparation is fed back. The liquid level and volume of the raw materials for packaging preparation are then displayed on the screen, further making the reading more convenient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the cleaning plate of the present invention; Figure 5 This is a partial cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the movable block of the present invention.

[0018] Reference numerals: 1. Measuring container; 2. Sealing plug; 3. Measuring mechanism; 31. Moving block; 32. Infrared thermometer; 33. Infrared transmitter; 34. Infrared receiver; 35. Heating rod; 36. Reading component; 361. Extension rod; 362. Scale column; 363. Scale ring; 364. Magnifying glass; 365. Resistance plate; 366. Conductive sheet; 367. Display screen; 37. Support leg; 38. Support plate; 39. Extension plate; 310. Motor; 311. Reciprocating screw; 312. Limiting rod; 4. Auxiliary 41. Metering aid; 42. Cleaning plate; 43. Sliding groove; 44. Coating sponge; 45. Cleaning port; 46. Annular coating sponge; 47. Replenishment assembly; 48. Replenishment box; 49. Replenishment ring; 40. Liquid outlet pipe; 410. Support frame; 411. Multi-stage electric telescopic rod; 42. U-shaped heating plate; 43. Exhaust pipe; 44. Partition plate; 45. Rotating plate; 46. Adjusting block; 47. Connecting groove; 48. Spring; 49. Connecting plate; 40. Inclined air outlet; 410. Circular air outlet; 411. Exhaust pump. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the 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 effort are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to embodiments.

[0021] Example: Refer to Figures 1 to 6 A metering device for preparing packaging materials that facilitates reading measurement data includes a metering container 1, which is transparent as a whole, and has a discharge port at the bottom end. The inner wall of the discharge port is provided with an airtight sealing plug 2. The liquid level of the raw materials used in packaging preparation can be accurately measured using metering mechanism 3, with reference to... Figure 1 , Figure 2 , Figure 6 The measuring mechanism 3 includes a moving block 31 driven up and down. An infrared thermometer 32 and an infrared emitter 33 are fixedly connected to the outer wall of the moving block 31 near the measuring container 1. An infrared receiver 34 is embedded in the inner wall of the measuring container 1 away from the moving block 31. A heating rod 35 is fixedly connected to the inner bottom wall of the measuring container 1. The measuring mechanism 3 also includes a reading component 36 for easy data reading. The infrared receiver 34 is a vertical rectangle. The metering mechanism 3 also includes multiple support legs 37 fixedly connected to the bottom of the metering container 1. Support plates 38 are fixedly connected to the outer walls of two support legs 37. An extension plate 39 is fixedly connected to the outer wall of the metering container 1 near the support plate 38. A motor 310 is fixedly connected to the bottom of the support plate 38. A reciprocating screw 311 is fixedly connected to the output end of the motor 310. A limit rod 312 is fixedly connected between the support plate 38 and the extension plate 39. A moving block 31 is sleeved on the outer wall of the reciprocating screw 311. The limit rod 312 slides through the moving block 31. The center height of the infrared thermometer 32 and the infrared emitter 33 is consistent with the horizontal height of the bottom wall of the metering container, which facilitates the subsequent calculation of the liquid level of the raw materials for packaging preparation.

[0022] The following specific structure facilitates data reading and recording; please refer to... Figure 1 , Figure 2 The reading component 36 includes an extension rod 361 fixedly connected to the outer wall of the moving block 31, a scale post 362 fixedly connected between the support plate 38 and the extension plate 39, a scale ring 363 fixedly connected to the other end of the extension rod 361 and slidingly contacting the outer wall of the scale post 362, and a spiral magnifying glass 364 fixedly connected to the outer wall of the extension rod 361. The spiral magnifying glass 364 is located on the outer periphery of the scale ring 363, wherein the scale of the scale post 362 starts from a position that is consistent with the horizontal height of the inner bottom wall of the measuring container.

[0023] A resistance plate 365 is fixedly connected between the support plate 38 and the extension plate 39. A conductive sheet 366 that slides in contact with the resistance plate 365 is fixedly connected to the outer wall of the moving block 31 on the side away from the extension rod 361. The conductive sheet 366 and the resistance plate 365 are electrically connected to the PLC controller and form a first reading circuit. The conductive sheet 366 and the resistance plate 365 constitute a sliding rheostat. During the upward sliding of the conductive sheet 366 on the resistance plate 365, the resistance of the sliding rheostat in the first reading circuit gradually decreases. The PLC controller is electrically connected to the infrared receiver 34, the infrared thermometer 32, and the infrared transmitter 33 and forms a second reading circuit. A display screen 367 that is electrically connected to the PLC controller is fixedly connected to the outer wall of the measuring container 1.

[0024] The auxiliary measuring mechanism 4 can make the measuring mechanism 3 more accurate, referring to... Figures 3 to 5The auxiliary measuring mechanism 4 includes a cleaning plate 41 for cleaning the inner wall of the measuring container 1 and the outer wall of the heating plate. The cleaning plate 41 is polygonal, and each side of the cleaning plate 41 has a sliding groove 42. The inner wall of the sliding groove 42 is slidably connected to an applicator sponge 43 for applying anti-stick liquid. A cleaning port 44 is opened at the center of the cleaning plate 41. The inner wall of the cleaning port 44 is fixedly connected to an annular applicator sponge 45 for applying anti-stick liquid to the outer wall of the heating rod 35. A supplementary component 46 is fixedly connected to the top of the cleaning plate 41. The auxiliary measuring mechanism 4 includes a support frame 47 fixedly connected to the top of the measuring container 1. A multi-stage electric telescopic rod 48 is fixedly connected to the bottom of the support frame 47. The telescopic end of the multi-stage electric telescopic rod 48 is fixedly connected to the top of the cleaning plate 41. A U-shaped heating plate 49 is fixedly connected to the bottom of the cleaning plate 41.

[0025] The inner wall of the sliding groove 42 is fixedly connected to a partition plate 411. The inner wall of the sliding groove 42 is rotatably connected to a rotating rod. The outer wall of the rotating rod is fixedly connected to a rotating plate 412. The upper end of the partition plate 411 slides in contact with the bottom end of the application sponge 43. The bottom end of the partition plate 411 slides in contact with an adjusting block 413, and the front end of the adjusting block 413 is inclined. Both the upper and lower ends of the partition plate 411 are provided with connecting grooves 414. Multiple springs 415 are fixedly connected to the inner wall of the connecting groove 414. The other end of the spring 415 is fixedly connected to a connecting plate 416. The two connecting plates 416 are fixedly connected to the bottom end of the application sponge 43 and the top end of the adjusting block 413, respectively. The upper and lower ends of the rotating plate 412 are in contact with the application sponge 43 and the adjusting block 413, respectively.

[0026] The replenishment component 46 includes a replenishment box 461 fixedly connected to the top of the cleaning plate 41. Multiple injection ports are provided between the replenishment box 461 and the sliding groove 42. A first electromagnetic metering valve is installed inside each injection port. A replenishment ring 462 is fixedly connected to the top of the cleaning plate 41. An outlet pipe 463 is fixedly connected inside the replenishment ring 462. A second electromagnetic metering valve is installed inside the outlet pipe 463. The outlet pipe 463 contacts the top of the annular applicator 45. Both the replenishment box 461 and the replenishment ring 462 are filled with anti-sticking liquid. Before each measurement, the first and second electromagnetic metering valves need to be opened so that the anti-sticking liquid in the replenishment tank 461 and replenishment ring 462 can be replenished into the application sponge 43 and the ring-shaped application cotton 45 through the injection port and the outlet pipe 463, respectively. Since the first and second electromagnetic metering valves are preset and their designed outflow rate is designed according to the absorption capacity of the application sponge 43 and the ring-shaped application cotton 45, the first and second electromagnetic metering valves will automatically close after replenishment.

[0027] The bottom end of the cleaning plate 41 is provided with an inclined air outlet 417, the inner peripheral wall of the cleaning port 44 is provided with a cleaning ring air outlet 418, the top end of the cleaning plate 41 is provided with a ventilation chamber that communicates with the inclined air outlet 417 and the cleaning ring air outlet 418, the top end of the cleaning plate 41 is fixedly connected with an exhaust pump 419, the output end of the exhaust pump 419 is fixedly connected with an exhaust pipe 410, the other end of the exhaust pipe 410 is connected to the ventilation chamber, and the PLC controller is electrically connected to the multi-stage electric telescopic rod 48, the exhaust pump 419, and the U-shaped heating plate 49 to form a control circuit.

[0028] The working principle of this invention is as follows: First, the multi-stage electric telescopic rod 48 is activated, which pushes the cleaning plate 41 downward. The inner wall of the metering container 1 squeezes the adjusting block 413, causing the adjusting block 413 to move inward. This pushes the top of the rotating plate 412 outward, which in turn pushes out the coating sponge 43. The coating sponge 43 applies the anti-sticking liquid to the inside of the metering container 1. At the same time, the ring-shaped coating sponge 43 applies the anti-sticking liquid to the heating rod 35. After the liquid is applied to the bottom of the metering container 1, the multi-stage electric telescopic rod 48 is controlled to retract back to its original position. The bottom of the metering container 1 is coated manually because the bottom is relatively flat, making it easy to apply. The applied anti-sticking agent can prevent the raw materials for packaging preparation from sticking to the inner wall of the metering container 1. Then, the raw materials for packaging preparation are discharged into the metering container 1. Simultaneously, the heating rod 35 is activated to heat the raw materials. This is because the raw materials are very viscous at room temperature, even close to a solid state. Heating reduces their viscosity, increases their fluidity, and further prevents them from sticking. Then, the multi-stage electric telescopic rod 48 is activated, pushing the cleaning plate 41 downwards. Simultaneously, the U-shaped heating plate 49 is activated, heating the edges of the cleaning plate 41 and the cleaning opening 44. This heating of the edges and cleaning opening 44 also heats the inner wall of the metering container 1 to increase adhesion to the metering container. The fluidity of the raw materials for packaging preparation is improved by activating the exhaust pump 419, which draws out outside air and discharges it through the exhaust pipe 410, the inclined air outlet 417, and the annular air outlet 418 onto the inner wall of the metering container 1 and the outer wall of the heating rod 35, thereby blowing down the raw materials for packaging preparation. At the same time, the cleaning plate 41 moves downward to push down the raw materials for packaging preparation that are difficult to blow down. Then, with the addition of air blowing, the raw materials for packaging preparation can be blown down. The extension length of the multi-stage electric telescopic rod 48 is roughly pushed to 5 cm above the liquid surface of the raw materials for packaging preparation based on experience, and then the multi-stage electric telescopic rod 48 is controlled to retract. Then, the start motor 310 is controlled, which drives the reciprocating screw 311 to rotate. The limit rod 312 then limits the movement of the moving block 31, causing the moving block 31 to move the infrared emitter 33 and the infrared thermometer 32 upwards simultaneously. This increases the heating temperature of the heating rod 35 (this temperature will not adversely affect the raw materials used in packaging preparation). The increased temperature of the heating rod 35 makes it significantly higher than the temperature of the raw materials used in packaging preparation. Therefore, when the temperature detected by the infrared thermometer 32 increases instantaneously, this indicates the temperature of the heating rod 35 has been detected. This position is... The reason for the liquid level height of the raw material for packaging preparation is that there is a large difference between the temperature of the raw material for packaging preparation and the temperature of the heating rod 35 after the heating power is increased. Furthermore, the temperature of the heating rod 35 below the liquid level will not be sensed due to the obstruction of the raw material for packaging preparation. Therefore, when the temperature of the heating rod 35 is detected, there is no obstruction of the raw material for packaging preparation, and this is the liquid level height. Even if the inner wall of the metering container 1 near the liquid level is covered with the raw material for packaging preparation due to the surface tension, it will not affect the detection of the temperature. Since the raw material for packaging preparation needs to be heated to ensure its fluidity, the above method is used for detection. At this time, the position of the liquid level of the raw material for packaging preparation will be further confirmed by the infrared light emitted by the infrared emitter 33. The infrared light received by the infrared receiver 34 at the first moment is the liquid level height. The reason is that the infrared receiver 34 cannot receive the infrared light because the raw material for packaging preparation blocks the infrared light. Therefore, when the time when the infrared receiver plate receives the infrared light is consistent with the time when the infrared thermometer 32 detects the temperature rise, it is the accurate liquid level height. At the same time, the moving block 31 will drive the conductive sheet 366 to move upward synchronously. Then, the PLC controller will detect the current passing through the sliding rheostat and feed back the liquid level of the raw materials for packaging preparation. The PLC controller will then display the liquid level on the display screen 367. The calculation module in the PLC controller will calculate the volume of the raw materials for packaging preparation based on the plane area of ​​the measuring container 1 and the liquid level, and also display it on the display screen 367. Meanwhile, the moving block 31 will also drive the scale ring 363 to move upward synchronously. Then, the circular magnifying glass 364 will magnify the scale on the scale column 362 for easy reading by the operator. After metering is completed, the raw materials for packaging preparation are discharged by opening the sealing plug 2. Since the inner wall of the metering container 1 has been coated with anti-sticking liquid in advance, the residue of raw materials for packaging preparation can be greatly reduced. At the same time, by activating the multi-stage electric telescopic rod 48 and the exhaust pump 419, the cleaning plate 41 is pushed by the multi-stage electric telescopic rod 48 to clean the inside of the metering container 1. The cleaning is discharged through the inclined air outlet 417 and the annular air outlet 418 onto the inner wall of the metering container 1 and the outer wall of the heating rod 35, so as to blow down the raw materials for packaging preparation. At the same time, anti-sticking liquid can also be applied.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. 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 of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A packaging material preparation metering device that facilitates reading of metering data, characterized by It includes a transparent metering container (1), the bottom end of which is provided with a discharge port, and the inner wall of the discharge port is provided with an airtight sealing plug (2). The measuring mechanism (3) includes a moving block (31) driven up and down. An infrared thermometer (32) and an infrared emitter (33) are fixedly connected to the outer wall of the moving block (31) near the measuring container (1). An infrared receiver (34) is embedded in the inner wall of the measuring container (1) away from the moving block (31). A heating rod (35) is fixedly connected to the inner bottom wall of the measuring container (1). The measuring mechanism (3) also includes a reading component (36) for easy data reading. The auxiliary measuring mechanism (4) includes a cleaning plate (41) for cleaning the inner wall of the measuring container (1) and the outer wall of the heating rod (35). The cleaning plate (41) is polygonal, and each side of the cleaning plate (41) is provided with a sliding groove (42). The inner wall of the sliding groove (42) is slidably connected to a sponge (43) for applying anti-stick liquid. A cleaning port (44) is provided at the center of the cleaning plate (41). The inner wall of the cleaning port (44) is fixedly connected to an annular sponge (45) for applying anti-stick liquid to the outer wall of the heating rod (35). A supplementary component (46) is fixedly connected to the top of the cleaning plate (41).

2. The metering device for preparing packaging materials that facilitates reading measurement data according to claim 1, characterized in that, The metering mechanism (3) also includes a plurality of support legs (37) fixedly connected to the bottom end of the metering container (1), wherein a support plate (38) is fixedly connected to the outer wall of two of the support legs (37), an extension plate (39) is fixedly connected to the outer wall of the metering container (1) near the support plate (38), a motor (310) is fixedly connected to the bottom end of the support plate (38), a reciprocating screw (311) is fixedly connected to the output end of the motor (310), a limit rod (312) is fixedly connected between the support plate (38) and the extension plate (39), the moving block (31) is sleeved on the outer wall of the reciprocating screw (311), and the limit rod (312) slides through the moving block (31).

3. The metering device for preparing packaging materials that facilitates reading measurement data according to claim 2, characterized in that, The reading component (36) includes an extension rod (361) fixedly connected to the outer wall of the moving block (31), a scale post (362) fixedly connected between the support plate (38) and the extension plate (39), a scale ring (363) fixedly connected to the other end of the extension rod (361) and slidingly contacting the outer wall of the scale post (362), and a spiral magnifying glass (364) fixedly connected to the outer wall of the extension rod (361), the spiral magnifying glass (364) being located on the outer periphery of the scale ring (363).

4. The metering device for preparing packaging materials that facilitates reading measurement data according to claim 3, characterized in that, A resistor plate (365) is fixedly connected between the support plate (38) and the extension plate (39). A conductive sheet (366) that slides in contact with the resistor plate (365) is fixedly connected to the outer wall of the moving block (31) away from the extension rod (361). The conductive sheet (366) and the resistor plate (365) are electrically connected to the PLC controller and form a first reading circuit. The conductive sheet (366) and the resistor plate (365) constitute a sliding rheostat. During the upward sliding of the conductive sheet (366) on the resistor plate (365), the resistance of the sliding rheostat in the first reading circuit gradually decreases. The PLC controller is electrically connected to the infrared receiver (34), the infrared thermometer (32), and the infrared transmitter (33) and forms a second reading circuit. A display screen (367) that is electrically connected to the PLC controller is fixedly connected to the outer wall of the measuring container (1).

5. A metering device for preparing packaging materials that facilitates reading measurement data, as described in claim 4, is characterized in that... The auxiliary measuring mechanism (4) includes a support frame (47) fixedly connected to the top of the measuring container (1). A multi-stage electric telescopic rod (48) is fixedly connected to the bottom of the support frame (47). The telescopic end of the multi-stage electric telescopic rod (48) is fixedly connected to the top of the cleaning plate (41). A U-shaped heating plate (49) is fixedly connected to the bottom of the cleaning plate (41).

6. The metering device for preparing packaging materials that facilitates reading measurement data according to claim 5, characterized in that, The inner wall of the sliding groove (42) is fixedly connected to a partition plate (411). The inner wall of the sliding groove (42) is rotatably connected to a rotating rod. The outer wall of the rotating rod is fixedly connected to a rotating plate (412). The upper end of the partition plate (411) slides in contact with the bottom end of the application sponge (43). The bottom end of the partition plate (411) slides in contact with an adjusting block (413). The front end of the adjusting block (413) is inclined. Both the upper and lower ends of the partition plate (411) are provided with connecting grooves (414). The inner wall of the connecting groove (414) is fixedly connected to multiple springs (415). The other end of the springs (415) is fixedly connected to a connecting plate (416). The two connecting plates (416) are fixedly connected to the bottom end of the application sponge (43) and the top end of the adjusting block (413), respectively. The upper and lower ends of the rotating plate (412) are in contact with the application sponge (43) and the adjusting block (413), respectively.

7. A metering device for preparing packaging materials that facilitates reading measurement data, as described in claim 6, is characterized in that, The replenishment component (46) includes a replenishment box (461) fixedly connected to the top of the cleaning plate (41). Multiple injection ports are provided between the replenishment box (461) and the sliding groove (42). A first electromagnetic metering valve is provided in the injection port. A replenishment ring (462) is fixedly connected to the top of the cleaning plate (41). An outlet pipe (463) is fixedly connected inside the replenishment ring (462). A second electromagnetic metering valve is provided inside the outlet pipe (463). The outlet pipe (463) is in contact with the top of the annular applicator (45). Anti-sticking liquid is filled in both the replenishment box (461) and the replenishment ring (462).

8. A metering device for preparing packaging materials that facilitates reading measurement data, as described in claim 7, is characterized in that... The bottom end of the cleaning plate (41) is provided with an inclined air outlet (417), the inner circumferential wall of the cleaning port (44) is provided with a cleaning ring air outlet (418), the top end of the cleaning plate (41) is provided with a ventilation chamber connected to the inclined air outlet (417) and the cleaning ring air outlet (418), the top end of the cleaning plate (41) is fixedly connected with an exhaust pump (419), the output end of the exhaust pump (419) is fixedly connected to an exhaust pipe (410), the other end of the exhaust pipe (410) is connected to the ventilation chamber, and the PLC controller is electrically connected to the multi-stage electric telescopic rod (48), the exhaust pump (419) and the U-shaped heating plate (49) to form a control circuit.

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