An eccentricity detection device and an injection mold for an air conditioning transmission assembly formed therefrom

Abstract

This utility model provides an eccentricity detection device and an injection mold for an air conditioning transmission assembly formed therefrom. The eccentricity detection device includes: a first detection component comprising M first sensors, which are spaced apart along the length of the rod; the M first sensors are located on a first detection line; a second detection component comprising N second sensors, which are spaced apart along the length of the rod; the N second sensors are located on a second detection line; the first and second detection lines do not coincide; M and N are both integers greater than 0; and a signal output component connected to both the first and second sensors. This application can determine whether the rod has experienced axial deviation by measuring the distance between the rod and the first or second sensor; the sensors of this application have a small footprint, are simple to operate, and can improve the efficiency and accuracy of rod axiality detection.

Description

Technical Field

[0001] This utility model relates to the technical field of eccentricity detection devices, and in particular to an eccentricity detection device and an injection mold for an air conditioning transmission component formed therefrom. Background Technology

[0002] The transmission rod assembly is a crucial component of the air conditioning airflow regulation mechanism. This component is typically quite long. During the production and use of injection molded products, the product needs to be pre-installed with the transmission rod. The transmission rod is made of iron core material, and the entire tooling for the transmission rod needs to be frequently removed and installed into the mold. Furthermore, it is difficult to observe and accurately determine whether the installation is up to standard after installation. If there is local bending in the transmission rod, or if foreign objects cause deformation after installation, mold compression or misalignment may occur during mold closing by the injection molding machine, thus affecting the product quality of the transmission rod assembly and the performance stability of the air conditioner.

[0003] Since the transmission rod assembly needs to be formed in an injection mold, existing devices for detecting curvature or eccentricity cannot be directly installed in the injection mold for detection. Therefore, it is necessary to design a detection device that can be used in the injection mold and can accurately measure the coaxiality of the transmission rod shaft. Utility Model Content

[0004] To overcome the problems existing in related technologies, one of the objectives of this utility model is to provide an eccentricity detection device that can determine whether the rod has deviated from its axis by measuring the distance between the rod and the first or second sensor. The sensor of this application has a small footprint, is easy to operate, and can improve the efficiency and accuracy of rod axis detection.

[0005] An eccentricity detection device for detecting whether a rod has deviated from its axis, comprising:

[0006] The first detection component includes M first sensors, which are spaced apart along the length of the rod; the M first sensors are located on a first detection line.

[0007] The second detection component includes N second sensors, which are spaced apart along the length of the rod; the N second sensors are located on a second detection line; the first detection line and the second detection line do not coincide; M and N are both integers greater than 0;

[0008] The signal output component is connected to both the first and second sensors.

[0009] In this application, all the first detection components are located on the same straight line, and all the second detection components are located on the same straight line. The distance between the rod and the first or second sensor can determine whether the rod has deviated from its axis. The first and second sensors can transmit the detection signals to the signal output component for output, thereby determining whether the axis of the rod has deviated or is abnormal in two different directions, improving the accuracy of the rod axis detection. This is suitable for detecting the axis offset of long rods. Furthermore, the first and second sensors have a small footprint, making them suitable for rod axis detection in narrow spaces.

[0010] In a preferred embodiment of this invention, the detection direction of the first sensor and the detection direction of the second sensor are perpendicular to each other. The detection direction of the first detection component refers to the direction of the line connecting the first detection line and the center line of the rod. The detection direction of the second detection component refers to the direction of the line connecting the second detection line and the center line of the rod.

[0011] This application sets the length direction of the rod as the X-axis direction. By setting two mutually perpendicular detection directions, the axisymmetry of the rod on the Z-axis and Y-axis can be detected. Since the rod extends along the X-axis direction, setting the detection directions of the first and second sensors to the Y-axis and Z-axis directions respectively enables axisymmetry detection in two dimensions, improving the accuracy of axisymmetry detection of the rod.

[0012] In a preferred embodiment of this invention, the first sensor is located at the bottom of the rod, and the first sensor is a magnetic sensor.

[0013] The rod is made of metal. During the detection of axisymmetry, the first sensor is located at the bottom of the rod and is directly facing the bottom of the rod to detect the distance. When the distance between the rod and one of the first sensors is less than the calibrated value, the signal output of the first sensor changes, indicating that the rod has undergone local deformation at that location, causing the distance between the first sensor and the rod to decrease. The detection method is simple and convenient, realizing the detection of the axisymmetry of the rod in the vertical direction.

[0014] In a preferred embodiment of this invention, the second sensor is located on the side of the rod, and the second sensor is a photoelectric sensor.

[0015] Here, "side" refers to the front or rear of the rod. Taking the vertical direction as the Z-axis and the length direction of the rod as the X-axis as an example, the detection direction of the second sensor is the Y-axis. That is, the line connecting the N second sensors and the centerline of the rod is perpendicular to both the Z-axis and X-axis. When the distance between the rod and one of the second sensors is less than the calibrated value, the signal output of the second sensor changes, indicating that a local deformation has occurred in the rod at that location, causing the distance between the second sensor and the rod to decrease. The detection method is simple and convenient, realizing the detection of the rod's axis of rotation in the Y-axis direction.

[0016] In a preferred embodiment of this invention, the rod is a cylindrical or cuboid structure.

[0017] Because the first and second detection lines in this application are perpendicular to each other, the eccentricity detection device is suitable for detecting cylindrical or cuboid rod structures. It only requires ensuring that the cross-section of the rod is identical along its length. The eccentricity detection device in this application is suitable for detecting different types of rods, has a wide range of applications, and occupies a small area, making it suitable for installation in confined spaces for axiality detection in different directions.

[0018] In a preferred embodiment of this invention, the signal output component includes M+N signal indicator lights, and the M+N signal indicator lights are configured to correspond one-to-one with the first sensor and the second sensor.

[0019] Each sensor is equipped with a corresponding indicator light, which allows you to determine whether deformation has occurred at the corresponding location. By associating each indicator light with a sensor, you can quickly observe whether deformation has occurred at each location, and thus quickly determine the location of the deformation, facilitating subsequent inspection and maintenance.

[0020] In a preferred embodiment of this invention, the number of first sensors is equal to the number of second sensors, and each first sensor and one second sensor form a detection group, with two signal indicator lights corresponding to each detection group connected in series to form a signal indication group.

[0021] This application sets multiple detection points along the length of the rod, with each detection point equipped with a first sensor and a second sensor. Only when the signals corresponding to both the first and second sensors are normal can it be determined that the rod at that location has not deviated from its axis. This application, by setting multiple detection points within the rod, and having each detection point detect the rod's axis of rotation from two mutually perpendicular directions, can determine whether an axis of rotation has occurred at each detection point. By setting these detection points, the axis of rotation at various locations on the rod can be quickly determined, facilitating positioning.

[0022] The second objective of this application is to provide an injection mold for an air conditioning transmission component, including a moving mold component, a fixed mold component, and an eccentricity detection device as described above. The moving mold component is provided with a rod placement position for placing a transmission rod, and the eccentricity detection device is located on the side of the rod placement position.

[0023] In a preferred embodiment of this invention, the moving mold assembly is provided with X moving mold cores, and each moving mold core is provided with a first sensor and a second sensor, where X is an integer greater than 0.

[0024] Before the moving mold assembly and the fixed mold assembly are closed, a transmission rod needs to be placed in the moving mold core. The transmission rod is made of iron core material. Because it is frequently removed and installed into the mold, it is difficult to observe and accurately determine whether the installation is qualified. If the transmission rod is partially bent, or deformed after installation due to foreign objects, mold compression or product misalignment will occur during injection molding. To avoid this situation, this application incorporates an eccentricity detection device in the moving mold core.

[0025] In a preferred embodiment of this invention, the moving mold assembly is provided with a rod positioning bracket, and the first sensor is located below the rod positioning bracket.

[0026] In this application, due to the relatively long length of the transmission assembly, the moving mold assembly is provided with three moving mold cores, each of which has a detection point, namely, a first sensor and a second sensor respectively. By setting the moving mold cores and the detection group in a one-to-one correspondence, the detection positions can be reasonably set, improving the efficiency and accuracy of the transmission rod's axisymmetry detection.

[0027] The beneficial effects of this utility model are as follows:

[0028] This utility model provides an eccentricity detection device for detecting whether a rod has deviated from its axis. It includes a first detection component, a second detection component, and a signal output component. The first detection component includes M first sensors, which are spaced apart along the length of the rod and located on a first detection line. The second detection component includes N second sensors, which are spaced apart along the length of the rod and located on a second detection line. The first and second detection lines do not overlap. M and N are both integers greater than 0. The signal output component connects both the first and second sensors. In this application, all the first and second detection components are located on the same straight line. The distance between the rod and the first or second sensor can determine whether the rod has deviated from its axis. The first and second sensors transmit detection signals to the signal output component for output, thereby determining whether the rod's axis has deviated or is abnormal in two different directions, improving the accuracy of the rod's axis detection. This device is suitable for detecting axis deviation in long rods. Furthermore, the first and second sensors have a small footprint, making them suitable for detecting the axis of a rod in confined spaces.

[0029] This application also provides an injection mold for an air conditioning transmission component, including a moving mold assembly, a fixed mold assembly, and an eccentricity detection device as described above. The moving mold assembly has a rod placement position for placing a transmission rod, and the eccentricity detection device is located on the side of the rod placement position. Because the first and second sensors occupy a small area, they can be easily installed inside the moving mold core. Furthermore, the signals from the first and second sensors can be led out to the outside of the injection mold through a signal output assembly. The output signal from the outside can accurately determine whether the transmission rod is properly placed in the moving mold assembly, thus improving the injection molding efficiency and accuracy of the transmission component. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the eccentricity detection device of this application;

[0031] Figure 2 This is a top view of the eccentricity detection device of this application;

[0032] Figure 3 This is a side view of the eccentricity detection device of this application;

[0033] Figure 4 This is a schematic diagram of the overall structure of the moving mold assembly of this application;

[0034] Figure 5 This is a schematic diagram showing the fit between the rod clamping component and the transmission rod in this application;

[0035] Figure 6 This is a side view of the moving mold assembly of this application;

[0036] Figure 7 This is a circuit diagram of the signal output component in this application.

[0037] Figure label:

[0038] 11. First sensor; 12. Second sensor; 13. Transmission rod; 14. Bushing; 15. Display screen; 16. Indicator light; 17. Moving mold assembly; 18. Moving mold core; 21. Rod positioning support; 22. Rod clamping component; 31. Power supply; 32. Sampling resistor; 33. Microcontroller; 34. Control center; 35. Machine tool switch. Detailed Implementation

[0039] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0040] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0041] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] Example 1

[0043] like Figures 1-7 As shown, this application provides an eccentricity detection device for detecting whether a rod has deviated from its axis; it includes:

[0044] The first detection component includes M first sensors 11, which are spaced apart along the length of the rod; the M first sensors 11 are located on a first detection line.

[0045] The second detection component includes N second sensors 12, which are spaced apart along the length of the rod; the N second sensors 12 are located on a second detection line; the first detection line and the second detection line do not overlap; M and N are both integers greater than 0;

[0046] The signal output component is connected to both the first sensor 11 and the second sensor 12.

[0047] In this application, all the first detection components are located on the same straight line, and all the second detection components are located on the same straight line. The distance between the rod and the first sensor 11 or the second sensor 12 can determine whether the rod has deviated from its axis. The first sensor 11 and the second sensor 12 can transmit the detection signal to the signal output component for output, thereby determining whether the axis of the rod has deviated or is abnormal in two different directions, improving the accuracy of the rod axis detection. It is suitable for the axis offset detection of long rods. Moreover, the first sensor 11 and the second sensor 12 have a small footprint, making them suitable for the rod axis detection in narrow spaces.

[0048] This application employs two sets of detection components to detect whether the axis of the rod has deviated from its center from different directions. Generally, in a straight direction, such as when the top of the rod deviates from its center, the bottom of the rod will also deviate accordingly. However, in a non-straight direction, such as when the top of the rod deviates from its center, the front-back and left-right directions of the rod may not necessarily deviate from their centers. Therefore, if only one set of detection components is used, there may be instances of inaccurate detection due to errors or malfunctions in the detection components.

[0049] In this application, both the first detection component and the second detection component are arranged along the length of the rod. The first sensor 11 is located on the first detection line, and the second sensor 12 is located on the second detection line, and the first and second detection lines do not coincide. For ease of explanation, this application defines: the detection direction of the first detection component refers to the direction of the line connecting the first detection line and the center line of the rod; the detection direction of the second detection component refers to the direction of the line connecting the second detection line and the center line of the rod.

[0050] The non-overlapping mentioned here refers to the following two situations:

[0051] In the first scenario, the first and second detection lines do not coincide, but the detection directions of the first sensor 11 and the second sensor 12 are parallel. For example, the rod is placed horizontally, with the first sensor 11 and the second sensor 12 located at the top or bottom of the rod, respectively. In this case, the first sensor 11 and the second sensor 12 verify each other to detect whether the top or bottom of the rod has deformed. If both the top and bottom of the rod deform simultaneously, it can be measured by either the first or second detection component. If the top or bottom of the rod deforms, but the other side remains undeformed, two sets of detection components are required for detection. Setting two sets of detection components improves the accuracy of detection in different directions of the rod.

[0052] The second method involves non-overlapping detection lines, but the angle between the detection direction of the first sensor 11 and the detection direction of the second sensor 12 is greater than 0 degrees and less than or equal to 90 degrees. For example, if the rod is placed horizontally, the first sensor 11 is located at the top or bottom of the rod, and the second sensor 12 is located on the side of the rod. In this way, the rod can be detected from two different directions, avoiding the problem of local eccentricity of the rod in multiple directions.

[0053] In this application, multiple detection components can be set, such as a third detection component, a fourth detection component, etc., and the structure of each detection component is similar to that of the first detection component and the second detection component, which are used to detect whether the rod body has local eccentricity from different directions.

[0054] Each detection component in this application needs to include multiple sensors. This is because the rod is relatively long, and the more sensors there are, the smaller the spacing between them, allowing for better detection at different locations. In practice, sensors can be placed at locations on the rod that are prone to deformation based on experience, or multiple sensors can be evenly spaced at suitable intervals to consider detection costs.

[0055] In this application, the first sensor 11 and the second sensor 12 can be of the same type or different types. Specific types of sensors include, for example, electromagnetic sensors or photoelectric sensors. Electromagnetic sensors are only applicable when the rod is made of metal. Furthermore, to facilitate visualization of the signal output components, this application can incorporate the sensors into a circuit. For example, regarding electromagnetic sensors,

[0056] Specifically, the circuit formed by the electromagnetic sensor utilizes the principle of electromagnetic induction. When a metal rod approaches the electromagnetic sensor, it changes the electromagnetic field of the detection coil, thereby altering the frequency of the oscillator within the sensor and converting it into a switching signal. The circuit formed by the photoelectric sensor uses a proximity switch. When the distance between the rod and the photoelectric sensor is less than a calibrated distance, the photoelectric sensor makes a judgment and converts it into a switching signal. In this way, the distance between the sensor and the rod can be displayed through the switching signal in the circuit.

[0057] In this application, a bushing 14 is also provided on the outer side of the rod. The bushing 14 has the same axiality and is sleeved on the outer side of the rod to ensure that the axiality of each position of the rod is the same. However, the bushing 14 alone cannot meet the requirements to ensure the coaxiality of the rod. Therefore, it is also necessary to use the eccentricity detection device in this application for real-time detection.

[0058] Example 2

[0059] like Figures 1-7 As shown, this application provides an eccentricity detection device for detecting whether a rod has deviated from its axis; it includes:

[0060] The first detection component includes M first sensors 11, which are spaced apart along the length of the rod; the M first sensors 11 are located on a first detection line.

[0061] The second detection component includes N second sensors 12, which are spaced apart along the length of the rod; the N second sensors 12 are located on a second detection line; the first detection line and the second detection line do not overlap; M and N are both integers greater than 0;

[0062] The signal output component is connected to both the first sensor 11 and the second sensor 12.

[0063] Specifically, in this embodiment, the detection direction of the first sensor 11 and the detection direction of the second sensor 12 are perpendicular to each other. The detection direction of the first detection component refers to the direction of the line connecting the first detection line and the center line of the rod. The detection direction of the second detection component refers to the direction of the line connecting the second detection line and the center line of the rod.

[0064] This application sets the length direction of the rod as the X-axis direction. By setting two mutually perpendicular detection directions, the axisymmetry of the rod on the Z-axis and Y-axis can be detected. Since the rod extends along the X-axis direction, setting the detection directions corresponding to the first sensor 11 and the second sensor 12 to the Y-axis and Z-axis directions can achieve axisymmetry detection in two dimensions, thereby improving the accuracy of axisymmetry detection of the rod.

[0065] Furthermore, the first sensor 11 is located at the bottom of the rod, and the first sensor 11 is a magnetic sensor.

[0066] The rod is made of metal. During the detection of the axis of rotation, the first sensor 11 is located at the bottom of the rod and is directly facing the bottom of the rod to detect the distance. When the distance between the rod and one of the first sensors 11 is less than the calibrated value, the signal output of the first sensor 11 changes, which indicates that the rod has undergone local deformation at that location, causing the distance between the first sensor 11 and the rod to decrease. The detection method is simple and convenient, and realizes the detection of the axis of rotation of the rod in the vertical direction.

[0067] Furthermore, the second sensor 12 is located on the side of the rod, and the second sensor 12 is a photoelectric sensor.

[0068] Here, "side" refers to the front or rear of the rod. Taking the vertical direction as the Z-axis and the length direction of the rod as the X-axis as an example, the detection direction of the second sensor 12 is the Y-axis. That is, the line connecting the N second sensors 12 and the center line of the rod is perpendicular to both the Z-axis and X-axis. When the distance between the rod and one of the second sensors 12 is less than the calibrated value, the signal output of the second sensor 12 changes, indicating that a local deformation has occurred in the rod at that location, causing the distance between the second sensor 12 and the rod to decrease. The detection method is simple and convenient, realizing the detection of the rod's axis of rotation in the Y-axis direction.

[0069] The rod in this application is a cylindrical or cuboid structure.

[0070] Because the first and second detection lines in this application are perpendicular to each other, the eccentricity detection device is suitable for detecting cylindrical or cuboid rod structures. It only requires ensuring that the cross-section of the rod is identical along its length. The eccentricity detection device in this application is suitable for detecting different types of rods, has a wide range of applications, and occupies a small area, making it suitable for installation in confined spaces for axiality detection in different directions.

[0071] Furthermore, the signal output component in this application includes M+N signal indicator lights 16, and the M+N signal indicator lights 16 are configured in a one-to-one correspondence with the first sensor 11 and the second sensor 12.

[0072] Each sensor is equipped with a corresponding signal indicator light 16, which can be used to determine whether deformation has occurred at the corresponding location. By associating the signal indicator lights 16 with the sensors one by one, it is possible to quickly observe whether deformation has occurred at each location, and thus quickly determine the location of the deformation, which is convenient for subsequent inspection and maintenance.

[0073] Furthermore, the number of first sensors 11 is equal to the number of second sensors 12, and each first sensor 11 and one second sensor 12 form a detection group, and the two signal indicator lights 16 corresponding to each detection group are connected in series to form a signal indication group.

[0074] This application sets multiple detection points along the length of the rod, with each detection point equipped with a first sensor 11 and a second sensor 12. Only when the signals corresponding to both the first sensor 11 and the second sensor 12 are normal can it be determined that the rod at that location has not deviated from its axis. This application, by setting multiple detection points within the rod, and having each detection point detect the rod's axis of rotation from two mutually perpendicular directions, can determine whether an axis of rotation has occurred at each detection point. By setting these detection points, the axis of rotation at various locations on the rod can be quickly determined, facilitating positioning.

[0075] Example 3

[0076] like Figures 1-7 As shown, the present application provides an injection mold for an air conditioning transmission component, including a moving mold assembly 17, a fixed mold assembly, and an eccentricity detection device as described above. The moving mold assembly 17 is provided with a rod placement position for placing the transmission rod 13, and the eccentricity detection device is located on the side of the rod placement position.

[0077] The fixed mold assembly contains a fixed mold core, and the moving mold assembly 17 contains a moving mold core 18. When the moving mold assembly 17 and the fixed mold assembly are closed, the fixed mold core and the moving mold core 18 form the cavity of the transmission assembly. Before the moving mold assembly 17 and the fixed mold assembly are closed, a transmission rod 13 needs to be placed in the moving mold core 18. The transmission rod 13 is made of iron core material. Because the transmission rod 13 is frequently removed and installed into the mold, it is difficult to observe and accurately determine whether the installation is qualified. If the transmission rod 13 is partially bent, or if foreign objects cause the transmission rod 13 to deform after installation, abnormalities such as mold compression or product misalignment will occur when the injection molding machine closes the mold. To avoid this situation, this application provides an eccentricity detection device in the moving mold core 18.

[0078] In this application, the transmission rod 13 has a cylindrical structure, and its cross-section is identical throughout. This application defines the length direction of the rod as the X-axis, the bottom to top direction as the Z-axis, and the front to rear direction as the Y-axis.

[0079] The specific eccentricity detection device includes a first detection component, a second detection component, and a signal output component, wherein the first detection component and the second detection component are both connected to the signal output component.

[0080] The first detection component includes three first sensors 11, which are spaced apart along the length of the rod. The three first sensors 11 are located on a first detection line, and the detection direction of the first detection component refers to the direction of the line connecting the first detection line and the centerline of the rod. The first sensors 11 are located at the bottom of the rod, and the detection direction of the first detection component is the Y-axis. The first sensors 11 are magnetic sensors, utilizing the principle of electromagnetic induction. When a metal transmission rod 13 approaches the electromagnetic sensor, it changes the electromagnetic field of the detection coil in the electromagnetic sensor, thereby changing the frequency of the oscillator in the electromagnetic sensor and converting it into a switching signal.

[0081] The second detection component includes three second sensors 12, which are spaced apart along the length of the rod. The three second sensors 12 are located on a second detection line and on the side of the rod. Each second sensor 12 is a photoelectric sensor. The circuit formed by the photoelectric sensors utilizes a proximity switch. When the distance between the transmission rod 13 and the photoelectric sensor is less than a calibrated distance, the photoelectric sensor makes a judgment and converts it into a switching signal.

[0082] In this application, each first sensor 11 and second sensor 12 forms a detection group. Each detection group is set at a detection point on the transmission rod 13 to detect whether the detection point has deviated from its axis in the Y-axis direction and the Z-axis direction.

[0083] The signal output component includes nine signal indicator lights 16, including three first signal indicator lights, three second signal indicator lights, and three combined signal indicator lights.

[0084] Three first signal indicator lights are configured one-to-one with the three first sensors 11. When the distance between the first sensor 11 and the transmission rod 13 is greater than or equal to the calibrated value, the switch signal closes, connecting the circuit containing the first sensor 11, and the corresponding first signal indicator light turns green. Similarly, when the distance between the first sensor 11 and the transmission rod 13 is less than the calibrated value, the switch signal opens, disconnecting the circuit containing the first sensor 11, and the corresponding first signal indicator light turns red. In this way, the three first signal indicator lights can be used to determine whether the transmission rod 13 has experienced axial displacement in the Z-axis direction at the location of the first sensor 11.

[0085] Three second signal indicator lights are configured one-to-one with the three second sensors 12. When the distance between the second sensor 12 and the transmission rod 13 is greater than or equal to the calibrated value, the switch signal closes, connecting the circuit containing the second sensor 12, and the corresponding second signal indicator light turns green. Similarly, when the distance between the second sensor 12 and the transmission rod 13 is less than the calibrated value, the switch signal opens, disconnecting the circuit containing the second sensor 12, and the corresponding second signal indicator light turns red. In this way, the three second signal indicator lights can be used to determine whether the transmission rod 13 has experienced axial displacement in the Z-axis direction at the location of the second sensor 12.

[0086] The three integrated signal indicator lights correspond to three detection groups. The corresponding integrated signal light will only be green when both the first sensor 11 and the second sensor 12 in the detection group are green. When either the first sensor 11 or the second sensor 12 in the detection group is red, the corresponding integrated signal light will be red.

[0087] In actual operation, the axis of the transmission rod 13 can be quickly determined using the integrated indicator lights. If all three integrated indicator lights are green, there is no need to observe the first and second indicator lights; the transmission rod 13 is considered normal, and the mold closing procedure can be started. If one of the integrated indicator lights is red, it is necessary to observe the corresponding first and second indicator lights.

[0088] The circuit diagrams of the signal indicator 16 and the sensor in this application are as follows: Figure 7 As shown, Figure 7 The microcontroller 33 is used to process the status of each sensor in the three detection groups and has a reserved 485 interface for PLC communication with the control center 34 in the machine tool. The control center 34 is connected to the machine tool switch 35. When all three comprehensive indicator lights are green, it controls the machine tool switch 35 to close and start the mold closing program. The sampling resistor 32 performs voltage division in the circuit for easy detection. The power supply 31 supplies power to the entire circuit. The microcontroller 33 is used to store and control the preset programs of the circuit and the machine tool. The signal indicator lights 16 are thus set on the display screen 15 for easy observation.

[0089] In this application, due to the relatively long length of the transmission assembly, the moving mold assembly 17 is provided with three moving mold cores 18, each of which is provided with a detection point, namely, a first sensor 11 and a second sensor 12 respectively. By setting the moving mold cores 18 and the detection group in a one-to-one correspondence, the detection positions can be reasonably set, thereby improving the efficiency and accuracy of the shaft centering detection of the transmission rod 13.

[0090] The moving mold assembly 17 is provided with a rod positioning support 21, and the first sensor 11 is located below the rod positioning support 21. The rod positioning support 21 is used to support the transmission rod 13 from the bottom up. Due to the presence of the rod positioning support, the deformation of the transmission rod 13 in the vertical direction, i.e., the Z-axis direction, is small. Therefore, the first sensor 11 is an electromagnetic sensor. The electromagnetic sensor uses the principle of electromagnetic induction for distance detection. Compared with photoelectric sensors, electromagnetic sensors have better accuracy and are suitable for centering detection within a small deformation range.

[0091] The moving mold assembly 17 is also provided with a rod clamping member 22, which is located on the outside of the moving mold core 18 and is used to clamp the transmission rod 13 to prevent the transmission rod 13 from shifting position during the mold closing process.

[0092] The moving mold assembly 17 is also equipped with bushings 14. The center lines of the three bushings 14 are on the same straight line, which are used to fit the transmission shaft from different positions to ensure that the center lines of the transmission shaft are on the same straight line. This is then combined with an eccentricity detection device to detect the center line in real time.

[0093] Since the first sensor 11 and the second sensor 12 occupy a small area, they can be easily installed inside the moving mold core 18. The signals of the first sensor 11 and the second sensor 12 can be led out to the outside of the injection mold through the signal output component. The output signal from the outside can accurately determine whether the transmission rod 13 is properly placed in the moving mold assembly 17, thereby improving the injection efficiency and accuracy of the transmission assembly.

[0094] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0095] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0096] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0097] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An eccentricity detection device for detecting whether a rod body has deviated from its axis; characterized in that, include: The first detection component includes M first sensors (11), which are spaced apart along the length of the rod; the M first sensors (11) are located on the first detection line; The second detection component includes N second sensors (12), which are spaced apart along the length of the rod; the N second sensors (12) are located on the second detection line; the first detection line and the second detection line do not coincide; M and N are both integers greater than 0; The signal output component is connected to both the first sensor (11) and the second sensor (12).

2. The eccentricity detection device according to claim 1, characterized in that, The detection direction of the first sensor (11) and the detection direction of the second sensor (12) are perpendicular to each other. The detection direction of the first detection component refers to the direction of the connection between the first detection line and the center line of the rod. The detection direction of the second detection component refers to the direction of the connection between the second detection line and the center line of the rod.

3. The eccentricity detection device according to claim 2, characterized in that, The first sensor (11) is located at the bottom of the rod and is a magnetic sensor.

4. The eccentricity detection device according to claim 3, characterized in that, The second sensor (12) is located on the side of the rod and is a photoelectric sensor.

5. The eccentricity detection device according to claim 1, characterized in that, The rod is a cylindrical or cuboid structure.

6. The eccentricity detection device according to claim 1, characterized in that, The signal output component includes M+N signal indicator lights (16), and the M+N signal indicator lights (16) are configured to correspond one-to-one with the first sensor (11) and the second sensor (12).

7. The eccentricity detection device according to claim 6, characterized in that, The number of first sensors (11) is equal to the number of second sensors (12), and each first sensor (11) and one second sensor (12) form a detection group. The two signal indicator lights (16) corresponding to each detection group are connected in series to form a signal indication group.

8. An injection mold for an air conditioning transmission component, characterized in that, The device includes a moving mold assembly (17), a fixed mold assembly, and an eccentricity detection device as described in any one of claims 1-7. The moving mold assembly (17) is provided with a rod placement position for placing a transmission rod (13), and the eccentricity detection device is located on the side of the rod placement position.

9. The injection mold for an air conditioning transmission component according to claim 8, characterized in that, The moving mold assembly (17) is provided with X moving mold cores (18), and each moving mold core (18) is provided with a first sensor (11) and a second sensor (12), where X is an integer greater than 0.

10. The injection mold for an air conditioning transmission component according to claim 8, characterized in that, The moving mold assembly (17) is provided with a rod positioning bracket (21), and the first sensor (11) is located below the rod positioning bracket (21).

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