High-precision pipe fitting cutting device

Abstract

The invention discloses a high-precision pipe fitting cutting device. A humidity sensor and a temperature sensor are arranged in a cavity of a cutting clamping plate; a humidity adjusting structure and a temperature adjusting structure are further arranged in the cavity; a controller for controlling the operation of the electrical components is mounted in an inner cavity of the fixed clamping plate; the controller adjusts cutting parameters of the corresponding pipe fittings according to detection numerical values of the humidity sensor and the temperature sensor. The controller is provided with a data storage unit and a data processing unit; optimal cutting parameters of various pipe fitting materials are stored in the data storage unit; the controller controls the humidity adjusting structure to adjust humidity according to a detection value of the humidity sensor; the controller controls the temperature adjusting structure to adjust the temperature according to a detection value of the temperature sensor; and when the controller has the optimal humidity and the optimal temperature in the cavity, the cutting knife is controlled to cut the corresponding pipe fitting at the optimal cutting rotating speed. The high-precision pipe fitting cutting device is high in cutting precision, and the cutting quality of pipe fittings is guaranteed.

Description

Technical Field

[0001] The present invention relates to a plastic pipe cutting device, in particular to a high-precision pipe fitting cutting device capable of adjusting the cutting environment according to environmental changes to achieve high-precision cutting. Background Art

[0002] A plastic pipe cutting device drives a cutting tool (such as a blade, a saw blade, etc.) to cut a plastic pipe through a mechanical or electric device. Existing cutting devices cut pipe fittings into appropriate lengths. Common cutting methods include manual cutting and using a pipe cutting machine for cutting. Whether it is the manual cutting method or the cutting by a pipe cutting machine, after measuring the pipe fittings, tools such as pipe cutting pliers are used for cutting. This method has accuracy defects and cannot adaptively adjust cutting parameters according to different pipe fitting materials combined with environmental parameters, resulting in insufficient mechanical accuracy of the cutting end faces of different pipe fittings, and the cross section is prone to being uneven, the cut opening is deformed and cracked, etc. Summary of the Invention

[0003] The present invention provides a high-precision pipe fitting cutting device to solve the above-mentioned technical problems, and specifically adopts the following technical solutions:

[0004] A high-precision pipe fitting cutting device, comprising: a fixed clamping plate; a first bracket fixedly arranged on one side of the fixed clamping plate for supporting one end of the pipe fitting; a sliding rod fixedly arranged on the fixed clamping plate, with scales provided on the sliding rod; a cutting clamping plate movably arranged on the sliding rod; the fixed clamping plate is provided with a first through hole for the pipe fitting to pass through; the cutting clamping plate is provided with a second through hole horizontally aligned with the first through hole, and a second bracket for supporting the other end of the pipe fitting is fixedly arranged on the side of the second through hole facing the fixed clamping plate; a limiting member for limiting the position of the end of the pipe fitting is arranged in the first through hole; a cutting assembly is arranged in the cavity structure formed by the cutting clamping plate; the cutting assembly includes: a cutting knife rotatably arranged and a cutting motor for driving the cutting knife; a humidity sensor for detecting the humidity in the cavity and a temperature sensor for detecting the temperature in the cavity are arranged in the cavity; a humidity adjustment structure for adjusting the humidity in the cavity and a temperature adjustment structure for adjusting the temperature in the cavity are also arranged in the cavity; a controller for controlling the operation of the above electrical components is installed in the inner cavity of the fixed clamping plate; the cutting motor, the humidity sensor, the temperature sensor, the humidity adjustment structure and the temperature adjustment structure are all communicatively connected to the controller; the controller adjusts the cutting parameters of the corresponding pipe fitting according to the detection values of the humidity sensor and the temperature sensor; the controller is provided with a data storage unit and a data processing unit; the data storage unit stores the optimal cutting parameters of various pipe fitting materials, namely the optimal temperature parameter, the optimal humidity parameter and the optimal cutting speed; the controller controls the humidity adjustment structure to adjust the humidity according to the detection value of the humidity sensor until the optimal humidity parameter is reached; the controller controls the temperature adjustment structure to adjust the temperature according to the detection value of the temperature sensor until the optimal humidity parameter is reached; when the cavity has the optimal humidity and the optimal temperature, the controller controls the cutting knife to cut the corresponding pipe fitting at the optimal cutting speed.

[0005] Further, when any one of the temperature and humidity in the cavity deviates from the optimal cutting parameter and increases, or both deviate from the optimal cutting parameter and increase simultaneously, the controller controls the rotation speed of the cutting knife to increase correspondingly; when any one of the temperature and humidity in the cavity deviates from the optimal cutting parameter and decreases, or both deviate from the optimal cutting parameter and decrease simultaneously, the controller controls the rotation speed of the cutting knife to decrease correspondingly.

[0006] Further, the formulas for the controller to control the calculation of the optimal temperature parameter and the optimal humidity parameter are as follows:

[0007] T 目标 = T 基准 + k1 * (T 环境 - T 基准 )

[0008] H 目标 = H 基准 + k2 * (H 环境 - H 基准 )

[0009] Among them, T 目标 and H 目标 are the target temperature and humidity respectively, T 基准 and H 基准 are the reference temperature and humidity of the plastic pipe fitting material respectively, T 环境 and H 环境 are the current ambient temperature and humidity respectively, and k1 and k2 are adjustment coefficients.

[0010] Furthermore, the controller generates a first cutting speed value curve graph according to different temperature values and the hardness values of the corresponding pipes at these temperature values; the controller generates a second cutting speed value curve graph according to different humidity values and the hardness values of the corresponding pipes at these humidity values; when the temperature and humidity in the cavity increase or decrease, the controller calculates the average speed value of the sum of the cutting speed values corresponding to the temperature value of the current node and the cutting speed values corresponding to the humidity value of the current node, and controls the cutting knife to cut at the average speed value.

[0011] Furthermore, a guiding plate is fixed at the lower end of the fixed clamping plate; a screw rod and a driving motor for driving the screw rod to rotate are rotatably arranged on the guiding plate; both sides of the cutting clamping plate are threadedly sleeved on the outer periphery of the screw rod.

[0012] Furthermore, a conductive element is arranged in the sleeve hole of the cutting clamping plate sleeved on the outer periphery of the sliding rod; the conductive element is electrically connected to a signal transmitter; the scale lines of the scale are conductive wires that can conduct the conductive element; the controller is communicatively connected to the signal transmitter to confirm the measured length of the pipe fitting according to the number of signal transmissions of the signal transmitter.

[0013] Furthermore, two groups of cutting assemblies are arranged in the cavity structure formed by the cutting clamping plate; two cutting knives are oppositely arranged on both sides of the pipe fitting inserted into the second through hole, and move in an arc around the circumference of the pipe fitting.

[0014] Furthermore, the fixed clamping plate is provided with a length measuring instrument for detecting the length of the pipe fitting passing through the first through hole; the limiting member is slidably inserted into the fixed clamping plate to slidably open or close the first through hole; the first bracket and the second bracket are provided with pressing members for limiting the cutting position of the pipe fitting.

[0015] Further, a circular guide rail is formed on the cutting clamping plate; a matching arc tooth condition is arranged inside the circular guide rail; the arc tooth condition is rotatably arranged inside the circular guide rail; on one side of the cutting clamping plate, a gear for meshing with the external teeth of the arc tooth condition and a motor for driving the gear are arranged on the guiding plate; two cutting assemblies are respectively installed at both ends of the arc tooth condition and are arranged opposite to each other with respect to the axis of the pipe fitting; installation cavities are formed at both ends of the arc tooth condition; the cutting motor is slidably arranged inside the installation cavity along the cavity wall of the installation cavity; a cylinder for connecting to the cutting motor to adjust the radial position of the cutting tool relative to the second through hole is arranged inside the installation cavity; a pressure sensor is arranged between the telescopic end of the cylinder and the cutting motor; the controller controls the telescopic movement of the cylinder according to the detection value of the pressure sensor so that when cutting the corresponding pipe fitting, a preset cutting pressure is always maintained between the cutting tool and the pipe fitting.

[0016] Further, the lower end of the cutting clamping plate is open, and a dust collection box is detachably installed at the opening; the integrated box is connected with a negative pressure device.

[0017] The beneficial effect of the present invention is that the provided high-precision pipe fitting cutting device can adjust the environmental parameters according to the characteristics of different pipe fitting materials, and thus adjust the cutting parameters according to the adaptability of different pipe fittings, so as to ensure that when cutting different pipe fittings, the mechanical precision of the cutting end face is high, and cutting is carried out under the condition of high-adaptability cutting parameters, so that the cross sections of different pipe fittings are flat enough, and the cut is not easy to deform and crack, thereby realizing high-precision cutting of different pipe fittings. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic diagram of the internal structure of the high-precision pipe fitting cutting device of the present application;

[0020] Figure 2 is Figure 1 an enlarged schematic diagram of the partial structure of the high-precision pipe fitting cutting device in

[0021] High-precision pipe fitting cutting device 10, fixed clamping plate 11, first through hole 111, first bracket 12, slide bar 13, cutting clamping plate 14, second through hole 141, circular guide rail 142, cutting motor 15, humidity sensor 16, temperature sensor 17, humidity adjustment structure 18, temperature adjustment structure 19, controller 20, guide plate 21, screw rod 22, driving motor 23, cylinder 24, pressing member 25, motor 26, dust collection box 27, negative pressure device 28, limiting member 29, second bracket 30, cutting knife 31, length measuring instrument 32, arc tooth condition 33, installation cavity 331, gear 34, signal transmitter 35. Specific embodiments

[0022] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0023] As Figures 1 to 2 shown, a high-precision pipe fitting cutting device 10 of the present application includes: a fixed clamping plate 11, and a first bracket 12 is fixedly arranged on one side of the fixed clamping plate 11 to support one end of the pipe fitting through the first bracket 12. A slide bar 13 is fixedly arranged on the fixed clamping plate 11, a scale 131 is arranged on the slide bar 13, and a cutting clamping plate 14 is also movably arranged on the slide bar 13. By sliding the cutting clamping plate 14 along the slide bar 13 to adjust the position corresponding to the scale 131, the distance between the cutting clamping plate 14 and the fixed clamping plate 11 is adjusted, so that the distance between the two clamping plates is the length of the pipe fitting to be cut. A first through hole 111 for the pipe fitting to pass through is arranged on the fixed clamping plate 11, a second through hole 141 horizontally aligned with the first through hole 111 is arranged on the cutting clamping plate 14, and a second bracket 30 is fixedly arranged on the side of the second through hole 141 facing the fixed clamping plate 11 to support the other end of the pipe fitting. A limiting member is arranged in the first through hole 111 to limit the position of the end of the pipe fitting. Thus, when cutting the pipe fitting, one end of the pipe fitting is passed through the second through hole 141 once until it is inserted into the first through hole 111, the limiting plate limits the end of the pipe fitting, and then the cutting clamping plate 14 is slid to the specified scale 131 position, and the cutting length of the pipe fitting can be measured.

[0024] Furthermore, the cutting clamping plate 14 forms a cavity structure, and a cutting assembly is arranged in the cavity structure. The cutting assembly includes: a cutting knife 31 and a cutting motor 15. The cutting knife 31 is rotatably arranged at the driving end of the cutting motor 15, and the cutting motor 15 drives the cutting knife 31 to rotate when starting to cut the pipe fitting.

[0025] Furthermore, a temperature sensor 17 and a humidity sensor 16 are provided inside the cavity. The humidity sensor 16 is used to detect the humidity inside the cavity, and the temperature sensor 17 is used to detect the temperature inside the cavity. A humidity adjustment structure 18 and a temperature adjustment structure 19 are also provided inside the cavity. The humidity adjustment structure 18 is used to adjust the humidity inside the cavity, and the temperature adjustment structure 19 is used to adjust the temperature inside the cavity. A controller 20 is installed inside the inner cavity of the fixed clamping plate 11 to control the operation of the above electrical components. The cutting motor 15, the humidity sensor 16, the temperature sensor 17, the humidity adjustment structure 18, and the temperature adjustment structure 19 are all communicatively connected to the controller 20. Then, the controller 20 adjusts the cutting parameters of the corresponding pipe fittings according to the detection values of the humidity sensor 16 and the temperature sensor 17. Specifically:

[0026] The controller 20 is provided with a data storage unit and a data processing unit. The data storage unit stores the optimal cutting parameters for various pipe fitting material models, namely the optimal temperature parameters, the optimal humidity parameters, and the optimal cutting speed. When cutting pipe fittings, the corresponding material model of the pipe fitting is input. The controller 20 controls the humidity adjustment structure 18 to adjust the humidity according to the detection value of the humidity sensor 16 until the optimal humidity parameter is reached, and the controller 20 controls the temperature adjustment structure 19 to adjust the temperature according to the detection value of the temperature sensor 17 until the optimal humidity parameter is reached. Finally, when the cavity has the optimal humidity and the optimal temperature, the controller 20 controls the cutting motor 15 to start with the optimal cutting parameters, so as to control the cutting tool 31 to cut the corresponding pipe fittings at the optimal cutting speed.

[0027] Through the above technical solution, the high-precision pipe fitting cutting device 10 provided by the applicant can adjust the environmental parameters according to the characteristics of different pipe fitting materials, and thus adjust the cutting parameters according to the adaptability of different pipe fittings, so as to ensure that when cutting different pipe fittings, the mechanical precision of the cutting end face is high, and the cutting is carried out under the condition of high-adaptability cutting parameters, so that the cross-sections of different pipe fittings are flat, and the cut is not easy to deform and crack, thereby realizing the high-precision cutting of different pipe fittings. That is to say, through this device, not only can the optimal cutting parameters be adopted for cutting according to the material characteristics of the pipe fittings themselves to improve the cutting precision of the pipe fittings and reduce the formation probability of burrs, deformation, and notches on the cutting surface, but also the energy consumption can be reduced, and the high-power cutting is not always used to maximize the cutting force.

[0028] As a specific implementation manner, when any one of the temperature and humidity in the cavity deviates from the optimal cutting parameters and increases, or both deviate from the optimal cutting parameters and increase, the controller 20 controls the rotational speed of the cutting tool 31 to increase correspondingly. That is to say, the pipe fitting materials adapted by this device are generally plastic materials. The hardness of plastic pipe fittings will change with the change of the environment (humidity, temperature). When one of the humidity or temperature is too high, or both are too high, the hardness of the pipe fittings will decrease. After the hardness decreases, the adaptability of the cutting rotational speed increases, which will reduce the probability of burrs, unevenness, and deformation at the cut of the pipe fittings. When any one of the temperature and humidity in the cavity deviates from the optimal cutting parameters and decreases, or both deviate from the optimal cutting parameters and decrease, the controller 20 controls the rotational speed of the cutting tool 31 to decrease correspondingly. That is to say, the pipe fitting materials adapted by this device are generally plastic materials. The hardness of plastic pipe fittings will change with the change of the environment (humidity, temperature). When one of the humidity or temperature is too low, or both are too low, the hardness of the pipe fittings will increase. After the hardness increases, the adaptability of the cutting rotational speed decreases, which will reduce the probability of cracking, notch deformation due to excessive hard impact force at the cut of the pipe fittings. Therefore, according to the softening or hardening of the corresponding pipe fitting materials, this solution will increase or decrease the rotational speed, so as to achieve effective energy saving while ensuring the cutting accuracy, and reduce dust burrs and improve the cutting quality of the pipe fittings.

[0029] Specifically, the formulas for the controller 20 to control and calculate the optimal temperature parameter and the optimal humidity parameter are as follows:

[0030] T 目标 =T 基准 +k1*(T 环境 -T 基准 )

[0031] H 目标 =H 基准 +k2*(H 环境 -H 基准 )

[0032] Among them, T 目标 and H 目标 are the target temperature and humidity respectively, T 基准 and H 基准 are the reference temperature and humidity of the plastic pipe fitting material respectively, T 环境 and H 环境 are the current ambient temperature and humidity respectively, and k1 and k2 are adjustment coefficients.

[0033] Further, the data processing unit of the controller 20 generates a first cutting speed value curve graph based on different temperature values and the hardness values of the corresponding pipe materials at those temperature values, and generates a second cutting speed value curve graph based on different humidity values and the hardness values of the corresponding pipe materials at those humidity values. In this way, the optimal cutting speeds corresponding to different temperatures and humidities are stored in the data storage unit in the form of graphs for easy reference. When the temperature and humidity in the cavity increase or decrease due to sudden changes in the environment, the controller 20 calculates the average speed value of the sum of the cutting speed values corresponding to the temperature value of the current node and the cutting speed values corresponding to the humidity value of the current node, and controls the cutting tool 31 to perform cutting at the average speed value, so as to perform cutting in a timely manner with the most accurate cutting parameters. This cutting state is real-time and dynamic, and the cutting parameters change with the real-time changes of the environment, resulting in higher cutting accuracy.

[0034] The humidity adjustment structure in the above solution can be an atomizer, and the temperature adjustment structure can adopt a resistance heater. Both the atomizer and the resistance heater are existing structures and can be directly installed and used.

[0035] As a specific implementation manner, a guide plate 21 is fixed to the lower end of the fixed clamping plate 11. A screw rod 22 and a driving motor 23 are rotatably provided on the guide plate 21. Both sides of the cutting clamping plate 14 are threadedly sleeved on the outer periphery of the screw rod 22. The driving motor 23 drives the screw rod 22 to rotate, thereby driving the cutting clamping plate 14 to automatically adjust its position, and then automatically measuring the cutting position of the pipe fitting according to the actual cutting length of the pipe fitting.

[0036] Further, the cutting clamping plate 14 is sleeved on the outer periphery of the sliding rod 13 through a sleeve hole, and a conductive element is provided in the sleeve hole. The conductive element is electrically connected to a signal transmitter 35. The scale lines of the scale 131 are conductive wires that can conduct the conductive element. The controller is communicatively connected to the signal transmitter 35 to confirm the measured length of the pipe fitting according to the signal emission times and time intervals of the signal transmitter 35. That is to say, in the initial state of cutting, the cutting clamping plate 14 is located at the initial position. When it is necessary to adjust the position of the cutting clamping plate 14, the driving motor 23 drives the screw rod 22 to rotate, thereby driving the cutting clamping plate 14 to automatically adjust its position. Each time the conductive element passes through a conductive wire, it conducts once, and at this time, an electrical signal is sent to the controller 20 once. When the number of electrical signals received by the controller 20 reaches the preset number, the controller 20 controls the driving motor 23 to stop running. At this time, the measured length of the pipe fitting is the length that needs to be cut. In this way, not only can the cutting position be automatically adjusted, but also the cutting length of the pipe fitting can be accurately measured, which can meet the application scenarios with high precision requirements for the cutting length and cutting surface of the pipe fitting.

[0037] As a specific implementation manner, two sets of cutting components are arranged in the cavity structure formed by the cutting clamping plate 14. Two cutting knives 31 are oppositely arranged on both sides of the pipe fitting inserted into the second through hole 141 and move in an arc around the circumferential direction of the pipe fitting. In this way, through the relative pressing force of the two cutting knives 31, it can be ensured that the cutting pressures on both sides of the pipe fitting are balanced. Then, through the arc-shaped movement of the two cutting knives 31 for cutting, the deformation of the cutting port of the pipe fitting caused by the cutting pressure can be avoided.

[0038] The arc-shaped movement of the above-mentioned cutting knife 31 can drive the cutting component to move in an arc through a connecting rod and a guide rail. The arc-shaped movement of the cutting knife 31 can also be realized by arranging an arc-shaped rack in the guide rail and then driving the arc-shaped rack to rotate around the axis of the pipe fitting in the guide rail through a gear.

[0039] As a specific solution of the present application, a circular guide rail 142 is formed on the cutting clamping plate. An arc-shaped tooth condition 33 is arranged in the circular guide rail 142. The arc-shaped tooth condition 33 is rotatably arranged in the circular guide rail 142. A gear 34 and a motor 26 are arranged on one side of the cutting clamping plate 14. The motor 26 drives the gear 34, so as to drive the arc-shaped tooth condition 33 to rotate around the central axis of the second through hole 141 through the gear 34. The two cutting components are respectively installed at both ends of the arc-shaped tooth condition 33 and are oppositely arranged with respect to the central axis of the second through hole 141. Installation cavities are formed at both ends of the arc-shaped tooth condition 33. The cutting motor 15 is slidably arranged along the cavity wall of the installation cavity in the installation cavity, so as to ensure the cutting stability of the cutting component. The cutting component can adjust the cutting position along the radial direction of the arc-shaped tooth condition 33, so as to adapt to pipe fittings with different wall thicknesses. Specifically, the relative distance between the two cutting knives 31 can be adjusted by the telescopic movement of the air cylinder 24. A pressure sensor is arranged between the telescopic end of the air cylinder 24 and the cutting motor 15. The controller 20 controls the telescopic movement of the air cylinder according to the detection value of the pressure sensor, so as to always maintain a preset cutting pressure when cutting the corresponding pipe fitting. The cutting pressure values of different pipe fittings are different. The cutting pressure values corresponding to different pipe fittings can be stored in the storage unit of the controller 20. Thus, when cutting pipe fittings of different materials, the controller controls the air cylinder to apply pressure to the cutting motor according to the corresponding pressure value.

[0040] Specifically, an arc-shaped T-shaped protrusion is arranged on the outer periphery of the arc-shaped tooth condition 33, and an annular T-shaped groove is formed on the inner periphery of the circular guide rail 142. The arc-shaped tooth condition 33 is stably rotatably arranged in the circular guide rail 142 through the cooperation of the T-shaped protrusion and the T-shaped groove. A plurality of balls are also arranged between the T-shaped protrusion and the T-shaped groove, so as to reduce the rotational friction force between the T-shaped protrusion and the T-shaped groove.

[0041] As a specific implementation manner, the fixed clamp plate 11 is provided with a length measuring instrument 32, which is used to detect the length of the pipe fitting passing through the first through hole 111. Thus, when cutting a long pipe fitting, if the long pipe fitting exceeds the scale 131 value range of the sliding rod 13, the length exceeding the first through hole 111 can be measured by the length measuring instrument 32, so that various long pipe fittings can be measured and cut. The first bracket 12 and the second bracket 30 are provided with a pressing member 25 for limiting the pipe fitting, so as to ensure the stability of the cutting position of the pipe fitting. The limiting member 29 of this solution is slidably inserted into the fixed clamp plate 11 to slidably open or close the first through hole 111. When a long pipe fitting needs to be cut, it slides out of the first through hole 111. When cutting a short pipe fitting, it is inserted into the first through hole 111 to directly block the first through hole 111 and limit the end of the pipe fitting. After the limiting member 29 is pulled out of the first through hole 111 upward, its position is limited by the limiting pin provided on itself.

[0042] As a specific implementation manner, a air knife assembly 26 is provided on one side of the first through hole 111. The air knife assembly 26 can be used to clean the burrs and dust on the cutting surface of the pipe fitting. The air knife assembly 26 includes: a first air knife ring 261 and a second air knife ring 262. The first air knife ring 261 is used to clean the inner peripheral side of the end face of the pipe fitting cut, and the second air knife ring 262 is used to clean the outer peripheral side of the end face of the pipe fitting cut. When the pipe fitting cutting is completed, it can be pulled out along the first through hole 111, so as to clean the burrs and dust on the inner and outer edges of the cutting end face of the pipe fitting. Generally, after cutting is completed, air knife cleaning is carried out to avoid the influence of high-pressure air flow on the cutting accuracy.

[0043] Further, the lower end of the cutting clamp plate 14 is designed to be open, and a dust collection box 27 is detachably installed at the opening. The integrated box is connected to a negative pressure device 28, and the negative pressure device 28 is used to centrally suck the cutting dust in the cutting cavity. Generally, after cutting is completed, dust suction is carried out to avoid the influence of negative pressure air flow on the cutting accuracy.

[0044] When cutting short pipe fittings, first insert the pipe fittings into the second through hole 141 and the first through hole 111 in sequence. Then, limit the position of the pipe fittings through the limiting member 29 inserted into the first through hole 111. At this time, the pressing member 25 presses both ends of the pipe fittings under the drive of the cylinder. Next, the driving motor 23 drives the screw rod 21 to drive the cutting clamping plate to move to the preset cutting position. The controller controls the temperature adjustment structure 19 and the humidity adjustment structure 18 according to the detection data of the temperature sensor 17 and the humidity sensor 16, adjusts the temperature and humidity inside the cavity of the cutting clamping plate 14 to the target value, and then controls the cutting knife 31 to cut with the optimal cutting parameters. During this process, if the temperature or humidity of the environment suddenly changes, the controller controls the cutting knife to adjust the cutting speed in real time according to the changed temperature value and humidity value. During the cutting process, the gear 34 drives the arc tooth condition 33 to rotate, thereby driving the two cutting knives 31 to also perform circular motion, which can not only improve the cutting efficiency but also improve the cutting accuracy.

[0045] When cutting long pipe fittings, the cutting operation process is the same as that of cutting short pipe fittings. Just when inserting the pipe fittings at the beginning, open the first through hole 111, and then let the pipe fittings pass through the first through hole 111. The length of the pipe fittings passing through the first through hole 111 can be measured by the length measuring instrument 32. When the length measuring instrument 32 detects that the length of the end of the pipe fittings protruding reaches the preset length, it sends a signal to the controller 20. The controller 20 controls the cylinder to drive the pressing member 25 to press the pipe fittings, and then the same operation as the above cutting process of short pipe fittings is adopted for cutting.

[0046] On the basis of this technical solution, the corresponding pressing member and the first bracket, as well as the corresponding pressing member and the second bracket, can be designed to be arc-shaped, and the corresponding pressing member and the first bracket can move relative to each other, and the corresponding pressing member and the second bracket can also move relative to each other. In this way, the corresponding pressing member and the first bracket can be moved relative to each other, and the corresponding pressing member and the second bracket can be moved relative to each other to cut pipe fittings with different diameters. When inserting pipe fittings with different diameters, the corresponding pressing member and the first bracket are moved relative to each other, and the corresponding pressing member and the second bracket are moved relative to each other to clamp the pipe fittings, and the central axes of the pipe fittings and the first through hole and the second through hole are made to coincide. The relative movement between the corresponding pressing member and the first bracket and the relative movement between the corresponding pressing member and the second bracket can be controlled by the telescopic movement of the cylinder with a limited stroke, so as to ensure that the central axes of the pipe fittings and the first through hole and the second through hole coincide. It is also possible to replace the cutting knife to adapt to different types of pipe materials.

[0047] In the existing technology, the cutting device cuts the pipe fittings into appropriate lengths. The commonly used cutting methods are manual cutting or using a pipe cutting machine. Whether it is manual cutting or cutting with a pipe cutting machine, after measuring the pipe fittings, tools such as pipe cutters are used for cutting. This method has precision defects and cannot adaptively adjust the cutting parameters according to different pipe fitting materials combined with environmental parameters, resulting in insufficient mechanical precision of the cutting end faces for different pipe fittings, and the cross-section is prone to situations such as unevenness and incision deformation and cracking. Through the above technical solutions of this application, the problems faced by the existing technology are solved. It can not only effectively improve the cutting precision, save energy consumption, but also effectively improve the production efficiency, and is applicable to application scenarios with high requirements for the cutting precision of pipe fittings. Therefore, by using the high-precision pipe fitting cutting device of this application for pipe fitting cutting production, the economic benefits of the production line can be significantly improved.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form. Any technical solutions obtained by using equivalent replacements or equivalent transformations fall within the protection scope of the present invention.

Claims

1. A high-precision pipe cutting device, comprising: Fixed splint; A first bracket for supporting one end of the pipe is fixedly provided on one side of the fixed clamping plate; A slide bar is fixedly arranged on the fixed splint, and a scale is arranged on the slide bar; a cutting splint is movably arranged on the slide bar; The fixing clamping plate is provided with a first through hole for the pipe to pass through; The cutting clamp is provided with a second through hole horizontally aligned with the first through hole, and a second bracket for supporting the other end of the pipe is fixedly provided on one side of the second through hole facing the fixing clamp; It is characterized in that A limiting member for limiting the position of the end of the pipe is provided in the first through hole; A cutting assembly is arranged in the cavity structure formed on the cutting splint; The cutting assembly comprises: a rotatably arranged cutting knife and a cutting motor for driving the cutting knife; The cavity is provided with a humidity sensor for detecting the humidity in the cavity and a temperature sensor for detecting the temperature in the cavity; The cavity is also provided with a humidity regulating structure for regulating the humidity in the cavity and a temperature regulating structure for regulating the temperature in the cavity; The inner cavity of the fixed clamp is equipped with a controller for controlling the operation of the electrical components; The cutting motor, the humidity sensor, the temperature sensor, the humidity adjustment structure and the temperature adjustment structure are all communicatively connected to the controller; The controller adjusts the cutting parameters of the corresponding pipe according to the detection values ​​of the humidity sensor and the temperature sensor; The controller is provided with a data storage unit; The data storage unit stores optimal cutting parameters of various pipe materials, namely, optimal temperature parameters, optimal humidity parameters and optimal cutting speed; The controller controls the humidity adjustment structure to adjust the humidity according to the detection value of the humidity sensor until the optimal humidity parameter is reached; The controller controls the temperature adjustment structure to adjust the temperature according to the detection value of the temperature sensor until the optimal humidity parameter is reached; When the cavity has an optimal humidity and an optimal temperature, the controller controls the cutting knife to cut the corresponding pipe at an optimal cutting rotation speed.

2. The high-precision pipe cutting device according to claim 1, characterized in that: When any one of the temperature and humidity in the cavity deviates from the optimal cutting parameter or both deviate from the optimal cutting parameter, the controller controls the rotation speed of the cutting blade to match and increase; When any one of the temperature and humidity in the cavity deviates from the optimal cutting parameter or both deviate from the optimal cutting parameter at the same time, the controller controls the rotation speed of the cutting blade to match and decrease.

3. The high-precision pipe cutting device according to claim 2, characterized in that: The controller controls and calculates the formula for the optimal temperature parameter and the optimal humidity parameter as follows: T 目标 =T 基准 +k1*(T 环境 -T 基准 ) H 目标 =H 基准 +k2*(H 环境 -H 基准 ) Among them, T 目标 and H 目标 are the target temperature and humidity, T 基准 and H 基准 are the reference temperature and humidity of plastic pipe materials, T 环境 and H 环境 are the current ambient temperature and humidity respectively, and k1 and k2 are the adjustment coefficients.

4. The high-precision pipe cutting device according to claim 2, characterized in that: The controller generates a first cutting speed value curve diagram according to different temperature values ​​and the hardness values ​​of the corresponding pipes at the temperature values; The controller generates a second cutting speed value curve graph according to different humidity values ​​and hardness values ​​of the corresponding pipes at the humidity values; When the temperature and humidity in the cavity increase or decrease, the controller calculates the average speed value of the cutting speed value corresponding to the temperature value of the current node and the cutting speed value corresponding to the humidity value of the current node, and controls the cutting knife to cut at the average speed value.

5. The high-precision pipe cutting device according to claim 1, characterized in that: A guide plate is fixed to the lower end of the fixed clamping plate; The guide plate is rotatably provided with a screw and a driving motor for driving the screw to rotate; The two sides of the cutting clamping plate are threadedly sleeved on the outer periphery of the screw rod.

6. The high-precision pipe cutting device according to claim 1, characterized in that: A conductive element is provided in a sleeve hole of the cutting clamping plate sleeved on the outer periphery of the sliding rod; The conductive element is electrically connected to a signal transmitter; The scale lines of the scale are conductive threads that can conduct the conductive element; The controller is communicatively connected to the signal transmitter to confirm the measured length of the pipe according to the number of signal transmissions of the signal transmitter.

7. The high-precision pipe cutting device according to claim 1, characterized in that: Two groups of cutting components are arranged in the cavity structure formed by the cutting splint; The two cutting knives are arranged oppositely on two sides of the pipe inserted into the second through hole, and make arc-shaped motion around the circumference of the pipe.

8. The high-precision pipe cutting device according to claim 1, characterized in that: The fixing clamp is provided with a length meter for detecting the length of the pipe passing through the first through hole; The limiting member is slidably inserted into the fixed clamping plate to slide open or slide close the first through hole; The first bracket and the second bracket are provided with a clamping member for limiting the cutting position of the pipe fitting.

9. The high-precision pipe cutting device according to claim 1, characterized in that: A circular guide rail is formed on the cutting splint; The circular guide rail is provided with an adapted circular arc tooth condition; The arc teeth are rotatably arranged in the circular guide rail; A gear for meshing with the outer teeth of the circular arc tooth condition and a motor for driving the gear are provided on the guide plate at one side of the cutting clamp plate; The two cutting assemblies are respectively installed at the two ends of the arc tooth condition and are arranged opposite to each other about the axis of the pipe; The two ends of the arc gear condition are formed with mounting cavities; The cutting motor is slidably disposed in the installation cavity along the cavity wall of the installation cavity; A cylinder is provided in the mounting cavity for connecting to the cutting motor to adjust the radial position of the cutting knife relative to the second through hole; A pressure sensor is provided between the telescopic end of the cylinder and the cutting motor; The controller controls the extension and contraction of the cylinder according to the detection value of the pressure sensor, so that when cutting the corresponding pipe fitting, a preset cutting pressure is always maintained between the cutting knife and the pipe fitting.

10. The high-precision pipe cutting device according to claim 1, characterized in that: The lower end of the cutting splint is open, and a dust collecting box is detachably mounted at the opening; The integrated box is connected to a negative pressure device.

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