Average stroke speed calibration device of compressed tea pressing machine

Abstract

A stroke average speed calibration device of a compressed tea pressing machine comprises the compressed tea pressing machine, two guide rails are transversely, parallelly, detachably and fixedly installed on a working table of the compressed tea pressing machine, and a vertical sliding groove is formed in the position, close to the side edge of the working table, of each guide rail. At least two sensor fixing frames capable of adjusting the fixing positions up and down are installed between the two vertical sliding grooves, and each sensor fixing frame is provided with a laser speed measuring sensor. Each laser speed measurement sensor is connected with the controller host through a sensor wire; the side part of the pressing plate of the compressed tea pressing machine is detachably provided with a light reflecting sheet; the reflector can pass through the laser speed measurement sensor when moving up and down along with the pressing plate, and when the reflector and the laser speed measurement sensor are located on the same horizontal plane, the laser speed measurement sensor is aligned with the reflector. The utility model provides the stroke average speed calibration device of the compressed tea pressing machine, which is accurate in measurement.

Description

Technical Field

[0001] This utility model belongs to the technical field of speed calibration, specifically referring to a stroke average speed calibration device for a compressed tea press. Background Technology

[0002] Compressed tea is made by steaming loose tea leaves and then pressing them into specific shapes. It is mainly classified into black tea, red tea, green tea, and oolong tea. It is primarily produced in Yunnan, Hunan, Hubei, Sichuan, and Guangxi provinces, and common forms include cake tea, brick tea, and tuocha. Compressed tea has strong moisture-proof properties, making it easy to transport and store, and its flavor can improve during long-term storage.

[0003] Tea pressing machines typically use cylinders (or hydraulic cylinders) as the primary driving force. The cylinder pushes a pressure plate downwards, compressing the tea cake. However, during prolonged use, excessively high stroke speeds of the cylinder can accelerate friction and heat generation in the internal sealing rings, leading to faster seal wear, air leaks, and shortened lifespan. It also increases the impact force at the end of the stroke, affecting the quality of the tea cake. Therefore, the average stroke speed of the cylinder needs to be regularly checked and calibrated.

[0004] Currently, the conventional calibration methods involve using a stopwatch or a linear velocity measuring instrument. The stopwatch method involves measuring the time difference between the start and stop of pressing with a stopwatch, measuring the stroke with a steel tape measure, and calculating the average pressing speed. However, this method suffers from errors due to operator reaction time delays and visual judgment errors, resulting in poor measurement repeatability. The linear velocity measurement method involves placing the test disc of a contact-type linear velocity measuring instrument firmly against the test surface, causing the test surface to move vertically, ensuring the test disc rotates synchronously, thus converting rotational speed into linear velocity for measurement. However, this method also requires highly skilled operators, as the contact stability between the test disc and the test surface is easily affected, leading to measurement errors. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a calibration device for the average stroke speed of a tea pressing machine that can accurately measure the speed.

[0006] This utility model is implemented as follows:

[0007] A stroke average speed calibration device for a compressed tea press includes: a compressed tea press.

[0008] Two horizontally parallel, detachably fixed guide rails are installed on the worktable of the compressed tea press. A vertical slide groove is installed on each guide rail near the side of the worktable. At least two vertically adjustable sensor mounting brackets are installed between the two vertical slide grooves. A laser speed sensor is installed on each sensor mounting bracket. Each laser speed sensor is connected to the controller host through a sensor wiring connection.

[0009] A reflector is detachably mounted on the side of the pressing plate of the tea press machine; the reflector moves up and down with the pressing plate and passes the laser speed sensor. When the reflector and the laser speed sensor are on the same horizontal plane, the laser speed sensor is aligned with the reflector.

[0010] Furthermore, a horizontally placed "U"-shaped bracket is fixedly installed on the side of the pressure plate by bolts, and the reflector is glued to the side of the "U"-shaped bracket.

[0011] Furthermore, each of the vertical slides is provided with multiple screw holes from top to bottom for fixing the end of the sensor mounting bracket to adjust the position of the laser speed sensor.

[0012] The advantages of this invention are: it adopts a non-contact measurement method, which solves the problem of large errors introduced by manual timing in traditional technology, and also avoids the problem of contact stability being easily affected. By installing a reflector on the pressing plate of the tea press and using a laser speed sensor to measure the speed of the pressing plate, the accuracy of the average speed of the stroke is greatly guaranteed. Attached Figure Description

[0013] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is the front view of this utility model.

[0015] Figure 2 This is an enlarged schematic diagram of part A in this utility model.

[0016] Figure 3 This is a left view of the middle part of this utility model.

[0017] Figure 4 yes Figure 3 Top view.

[0018] Figure label:

[0019] 100-Compressed tea press machine, 101-Workbench, 102-Pressure plate, 1-Guide rail, 2-Vertical slide, 3-Sensor mounting bracket, 4-Laser speed sensor, 5-Sensor wiring, 6-Controller host, 7-Reflector, 8-Bolt, 9-“U”-shaped bracket, 10-Screw hole, 11-Sliding sleeve, 12-Angle steel, 13-Bolt, 14-Limiting edge, 15-Pre-grooved. Detailed Implementation

[0020] like Figures 1 to 4As shown, a stroke average speed calibration device for a compressed tea press includes: a compressed tea press 100; two guide rails 1 are horizontally parallel and detachably fixedly installed on the worktable 101 of the compressed tea press 100; a vertical slide groove 2 is installed on each guide rail 1 near the side of the worktable 101; two sensor mounting brackets 3 that can be adjusted vertically and fixedly positioned are installed between the two vertical slide grooves 2; a laser speed sensor 4 is installed on each sensor mounting bracket 3; each laser speed sensor 4 is connected to a controller host 6 through a sensor wiring 5.

[0021] A reflector 7 is detachably mounted on the side of the pressure plate 102 of the tea press machine 100. When the reflector 7 moves up and down with the pressure plate 102, it will pass the laser speed sensor 4. When the reflector 7 and the laser speed sensor 4 are on the same horizontal plane, the laser speed sensor 4 is aligned with the reflector 7.

[0022] A horizontally placed "U"-shaped bracket 9 is fixedly installed on the side of the pressure plate 102 by bolts 8, and a reflector 7 is glued to the side of the "U"-shaped bracket 9.

[0023] Each vertical slide 2 has multiple screw holes 10 from top to bottom for fixing the end of the sensor mounting bracket 3 to adjust the position of the laser speed sensor 4.

[0024] The vertical slide 2 is fixed by a sliding sleeve 11 fitted on the guide rail 1. The guide rail 1 is fixed at the end of the worktable 101 by an angle steel 12. The part of the angle steel 12 located on the bottom surface of the guide rail 1 is locked by bolts 13. The upper end face of the angle steel 12 has a limiting ridge 14 that fits into the pre-cut groove 15 on the side of the guide rail 1.

[0025] Work process:

[0026] Place two sensor mounting brackets 3 and corresponding laser speed sensors 4, ensuring they are all installed within the pressing stroke. Use a vernier caliper to measure the distance L between the two laser speed sensors 4. Start the tea press machine, and the pressure plate 102 presses down, causing the reflector 7 to pass through the two laser speed sensors 4 in succession. The laser speed sensors 4 determine the passage of the pressure plate 102 based on the laser signal reflected by the reflector 7, and record the time interval t, thereby obtaining the average speed v = L / t.

[0027] The average speed calibration device for the stroke of the compressed tea press of this utility model achieves the function of accurate measurement and calibration by installing a reflector 7 on the pressure plate 102 of the compressed tea press 100 and using a laser speed sensor 7 to measure the speed of the pressure plate 102.

[0028] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A stroke average speed calibration device for a compacted tea press, characterized by: include: Compressed tea press machine Two horizontally parallel, detachably fixed guide rails are installed on the worktable of the compressed tea press. A vertical slide groove is installed on each guide rail near the side of the worktable. At least two vertically adjustable sensor mounting brackets are installed between the two vertical slide grooves. A laser speed sensor is installed on each sensor mounting bracket. Each laser speed sensor is connected to the controller host through a sensor wiring connection. A reflector is detachably mounted on the side of the pressing plate of the tea press machine; the reflector moves up and down with the pressing plate and passes the laser speed sensor. When the reflector and the laser speed sensor are on the same horizontal plane, the laser speed sensor is aligned with the reflector.

2. The average speed calibration device for the stroke of a briquetting machine according to claim 1, characterized in that: A horizontally placed "U"-shaped bracket is fixedly installed on the side of the pressure plate by bolts, and the reflector is glued to the side of the "U"-shaped bracket.

3. The average speed of stroke calibrating device of a briquetting machine for compressed tea according to claim 1, characterized in that: Each of the vertical slides has multiple screw holes from top to bottom for fixing the end of the sensor mounting bracket to adjust the position of the laser speed sensor.

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