A cutter door pressure calibration device for a tobacco cutter

Abstract

The utility model relates to a kind of cutter door pressure calibration devices of tobacco shredding machine, including pressure sensing part and digital display part;Pressure sensing part includes upper balance plate, lower balance plate, three groups of supporting spring and pressure sensor, three groups of supporting spring are set between upper balance plate and lower balance plate, for keeping the balance of upper balance plate and lower balance plate, to equalize detection pressure;Digital display part includes digital display screen and adjustable support base, digital display screen is electrically connected with pressure sensor, for showing pressure value, adjustable support base is used to adjust the visual angle of digital display screen.The calibration device structure design is clear and reasonable, with good disassembly and assembly convenience, integrates pressure sensing and digital display function, can ensure the accuracy of numerical measurement, calibration precision is high, effectively fills the technical gap in cutter door pressure calibration, its precision performance and operating stability can fully meet the new process index requirement, and meet the trend of intelligent development in industry.

Description

Technical Field

[0001] This utility model relates to the field of pressure detection and calibration technology, specifically a pressure calibration device for the blade gate of a shredder. Background Technology

[0002] Currently, pressure calibration devices are used in the production of some agricultural machinery parts, such as pressure punching machines and hydraulic presses. In the wood processing process, for some processes that require precise slicing or cutting, such as bamboo slicing and thin wood slicing, similar digital calibration devices can also be used. By monitoring factors such as the material and moisture content of the wood, the pressure of the cutting gate can be automatically adjusted to obtain better processing results and reduce tool wear and wood waste.

[0003] Currently, the actual value of the knife gate pressure is measured manually. The pressure is determined by measuring the indentation on a wooden block. If the detected pressure is unacceptable, the proportional valve is adjusted to make the two values ​​consistent, thus calibrating the knife gate pressure of the shredder. While using calipers to measure the depth difference of the indentations on both sides of the wooden block to determine if the pressure on both sides of the knife gate is balanced, manual measurement lacks accuracy and reliability. Therefore, there is a need to develop and invent a comprehensive, automated, and digital measurement device. Utility Model Content

[0004] The purpose of this invention is to provide a pressure calibration device for the blade gate of a shredder, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure calibration device for a shredder blade, comprising a pressure sensing part and a digital display part; the pressure sensing part includes an upper balance plate, a lower balance plate, three sets of support springs, and a pressure sensor, the three sets of support springs being disposed between the upper and lower balance plates to keep the upper and lower balance plates balanced, so as to detect pressure evenly; the digital display part includes a digital display screen and an adjustable support base, the digital display screen being electrically connected to the pressure sensor for displaying pressure values, and the adjustable support base being used to adjust the viewing angle of the digital display screen.

[0006] As a preferred technical solution, the shredder's blade gate includes an upper blade gate and a lower blade gate; the pressure sensor is fixedly installed on the upper end of the upper balance plate, and during detection, it contacts the lower end of the upper blade gate to detect the pressure signal transmitted by the blade gate.

[0007] As a preferred technical solution, three sets of support springs are arranged in a straight line or an equilateral triangle between the upper and lower balance plates to optimize the pressure balance effect.

[0008] As a preferred technical solution, the digital display screen includes a power switch, a zeroing button, and a hold button, which are used to realize power control, zeroing of the measured value, and reading lock functions.

[0009] As a preferred technical solution, the adjustable support base includes a hinged structure or a ball joint connection structure, which enables the digital display screen to be adjusted and fixed within multiple angle ranges.

[0010] As a preferred technical solution, the adjustable support base includes a bracket set on the support base, and connectors on the left and right sides of the bracket are connected to the digital display screen, which can rotate 360 ​​degrees around the connectors.

[0011] As a preferred technical solution, the digital display screen is connected to the pressure sensor via a cable or wireless transmission module to receive and display pressure data.

[0012] As a preferred technical solution, both the upper and lower balance plates are rectangular metal plates with anti-slip textures on their surfaces.

[0013] As a preferred technical solution, the support spring is a compression spring, and its stiffness coefficient is selected according to the pressure range of the knife gate.

[0014] As a preferred technical solution, the digital display section also includes a built-in battery or an external power interface for powering the digital display and pressure sensor.

[0015] As a preferred technical solution, the device also includes a carrying handle, which is set on the upper balance plate for easy handling and placement.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1) The calibration device has a clear and reasonable structural design and good ease of disassembly and assembly; 2) The device integrates pressure sensing and digital display functions, which can ensure the accuracy of numerical measurement and high calibration precision, effectively filling the technical gap in knife gate pressure calibration; 3) Its accuracy performance and operational stability can fully meet the requirements of new process indicators and conform to the trend of intelligent development in the industry. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of a knife gate pressure calibration device for a shredder disclosed in this utility model; Figure 2 This is a side view of a shredder blade pressure calibration device disclosed in this utility model. Figure 3 This is a top view schematic diagram of a knife gate pressure calibration device for a shredder disclosed in this utility model; Figure 4 This is an electrical control diagram of a knife gate pressure calibration device for a shredder disclosed in this utility model.

[0018] Explanation of reference numerals in the attached drawings: Upper balance plate 101; Lower balance plate 102; Support spring 103; Pressure sensor 104; Digital display screen 201; Support base 202; Cable 203; Bracket 204; Connector 205. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] Example Please see Figure 1-3 This embodiment presents a pressure calibration device for a shredder blade, comprising a pressure sensing section and a digital display section. The pressure sensing section includes an upper balance plate, a lower balance plate, three sets of support springs, and a pressure sensor. The three sets of support springs are positioned between the upper and lower balance plates to maintain their balance and ensure even pressure detection. The digital display section includes a digital display screen and an adjustable support base. The digital display screen is electrically connected to the pressure sensor and displays the pressure value. The adjustable support base is used to adjust the viewing angle of the digital display screen.

[0021] Preferably, the shredder's blade gate includes an upper blade gate and a lower blade gate; a pressure sensor is fixedly installed on the upper end of the upper balance plate. During testing, the calibration device is placed between the upper and lower blade gates, in contact with the lower end of the upper blade gate, to detect the pressure signal transmitted by the blade gate.

[0022] Preferably, the three sets of support springs are arranged in a straight line or an equilateral triangle between the upper and lower balance plates to optimize the pressure equalization effect. This embodiment shows a straight line arrangement.

[0023] Preferably, the digital display includes a power switch, a zeroing button, and a hold button for power control, zeroing the measured value, and locking the reading.

[0024] Preferably, the adjustable support base includes a hinged structure or a ball joint structure, enabling the digital display screen to be adjusted and fixed within multiple angle ranges. The specific structure will be apparent to those skilled in the art and will not be described in detail here or in the accompanying drawings.

[0025] Preferred, such as Figure 1 and 2The structure shown can also be designed such that the adjustable support base has a bracket on it, with connectors on the left and right sides of the bracket to connect to the digital display screen. The digital display screen can rotate 360 ​​degrees around the connectors, similar to the structure of a rotating makeup mirror.

[0026] Preferably, the digital display screen is connected to the pressure sensor via a cable or wireless transmission module to receive and display pressure data.

[0027] Preferably, both the upper and lower balance plates are rectangular metal plates with anti-slip textures on their surfaces. Positioning rods can also be installed at the four corners between the upper and lower balance plates. One end of each positioning rod is connected to the lower balance plate, and the other end passes through a positioning hole on the upper balance plate to ensure stable balance.

[0028] Preferably, the support spring is a compression spring, and its stiffness coefficient is selected according to the pressure range of the knife gate. No specific limitation is made here.

[0029] Preferably, the digital display section also includes a built-in battery or an external power interface for powering the digital display and pressure sensor.

[0030] Preferably, the device may also include a carrying handle disposed on the upper balance plate for easy handling and placement.

[0031] The upper and lower balance plates and the adjustable support base can be made of 304 stainless steel with a thickness of 7mm.

[0032] The working principle of this device is as follows: When in use, place the knife gate pressure calibration device between the upper knife gate and the lower knife gate. After setting the knife gate pressure on the shredder operation display screen, press down the knife gate and observe the digital display screen of the knife gate pressure calibration device. Compare whether the measured actual value of the knife gate pressure is the same as the set value, and then make subsequent pressure value adjustments.

[0033] The device operates using an automatic control system for the knife gate pressure of the shredder. This system includes a data interaction terminal, a main controller, a proportional pressure regulating valve, an actuator, and a pressure transmitter. The pressure transmitter monitors the knife gate pressure in real time and feeds the actual value back to the main controller. The main controller, based on the deviation between the set value and the actual value, controls the actuator to adjust the knife gate pressure via the proportional pressure regulating valve, forming a closed-loop control to ensure the stability of the knife gate pressure. The system's maximum operating pressure is 0.6 MPa, and the working air source pressure range for the system is 0.6–0.8 MPa. A pressure switch (7) is installed in the system to detect the system pressure, protect the equipment, and ensure normal system operation.

[0034] like Figure 4As shown, all pneumatic control valves are closed, the air supply is cut off, and the knife gate cylinder cannot rise or fall. During operation, compressed air enters through filter 1+2 with control valves and then into the two-position three-way valve 3. At this time, solenoid valve Y1 is activated, valve 3 reverses, and compressed air enters the proportional pressure reducing valve 4 through valve 3. Air at a certain pressure is output from the proportional pressure reducing valve and enters the cylinder 6 through the three-position five-way valve 5. By controlling solenoid valves Y2 and Y3, the working position of valve 5 is changed, thereby controlling the cylinder to rise or fall.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for calibrating the blade pressure of a shredder, characterized in that, It includes a pressure sensing section and a digital display section. The pressure sensing section includes an upper balance plate, a lower balance plate, three sets of support springs, and a pressure sensor. The three sets of support springs are disposed between the upper and lower balance plates to keep them balanced for even pressure detection. The digital display section includes a digital display screen and an adjustable support base. The digital display screen is electrically connected to the pressure sensor and is used to display the pressure value. The adjustable support base is used to adjust the viewing angle of the digital display screen.

2. The shredder blade pressure calibration device according to claim 1, characterized in that, The shredder's blade gate includes an upper blade gate and a lower blade gate; the pressure sensor is fixedly installed on the upper end of the upper balance plate, and during detection, it contacts the lower end of the upper blade gate to detect the pressure signal transmitted by the blade gate.

3. The shredder blade pressure calibration device according to claim 1, characterized in that, The three sets of support springs are arranged in a straight line or an equilateral triangle between the upper and lower balance plates.

4. The shredder blade pressure calibration device according to claim 1, characterized in that, The digital display screen includes a power switch, a zeroing button, and a hold button, which are used to control power, zero the measured value, and lock the reading.

5. The shredder blade pressure calibration device according to claim 1, characterized in that, The adjustable support base includes a hinged structure or a ball joint connection structure, which enables the digital display screen to be adjusted and fixed within multiple angle ranges.

6. The shredder blade pressure calibration device according to claim 1, characterized in that, The adjustable support base includes a bracket disposed on the support base, and connectors are provided on the left and right sides of the bracket to connect to the digital display screen. The digital display screen can rotate 360 ​​degrees around the connectors.

7. The shredder blade pressure calibration device according to claim 1, characterized in that, The digital display screen is connected to the pressure sensor via a cable or wireless transmission module to receive and display pressure data.

8. The shredder blade pressure calibration device according to claim 1, characterized in that, Both the upper and lower balance plates are rectangular metal plates with anti-slip textures on their surfaces.

9. The shredder blade pressure calibration device according to claim 1, characterized in that, The digital display section also includes a built-in battery or an external power interface for powering the digital display and pressure sensor.

10. The shredder blade pressure calibration device according to claim 1, characterized in that, The device also includes a carrying handle mounted on the upper balance plate for easy handling and placement.

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