Encoder transmission mechanism

Abstract

The utility model discloses an encoder transmission mechanism, which belongs to the technical field of detection and transmission, and solves the problem of elongation measurement interruption caused by slight vibration or slight displacement of two stretching heads in the working process of the original tension straightening machine. A sleeve hole is formed in the protruding section of the encoder wheel and rotationally connected with a shaft of the encoder, a groove is formed in the periphery of the straight section of the encoder wheel, a steel wire rope is wound around the groove, steel wire rope adjusters are arranged at the two ends of the steel wire rope respectively, one steel wire rope adjuster is connected with the movable stretching head, and the other steel wire rope adjuster is connected with the fixed stretching head. The utility model has the advantages of simple processing, low cost, long service life and high operation efficiency. And under the condition that the tension straightening machine vibrates slightly or two stretching heads move slightly in the working process, data transmission is not interrupted, and loss of elongation data of a product in the stretching process is not affected.

Description

Technical Field

[0001] This utility model belongs to the field of detection and transmission technology, and specifically relates to an encoder transmission mechanism. Background Technology

[0002] The 1500-ton tension straightening machine is a specialized piece of equipment whose overall configuration was determined based on process analysis and design for an aluminum company in Northwest China. It is mainly used for stretching and straightening large aluminum products such as profiles, pipes, bars, and strips.

[0003] The main stretching process of the 1500-ton tension straightener is as follows: The material is arranged sequentially on the loading rack; the fixed head moves forward or backward according to the material length, and the pin is inserted into the combined frame; the conveying device transports the material to the designated position; the lifting device rises to receive the material (the corresponding support rollers are raised according to the material length); the feeding device retracts; the lifting device adjusts the material to the stretching center line; the centering device is activated to center the workpiece; the movable stretching head moves forward to clamp; the movable stretching head moves forward to send the workpiece into the clamping body of the fixed head; the support roller device descends; the movable stretching head begins stretching; after stretching is completed, the lifting device rises to receive the workpiece; the clamping devices of the movable and fixed heads are released; the stretching head retracts to send the workpiece out from the fixed head; the lifting device lowers the workpiece onto the conveyor roller table; the fixed conveyor roller table transports the material to the sawing section (after sawing); the conveyor roller table continues to send the workpiece to the discharge section; the lifting device rises the material to the designated position; the conveying device receives the material and transports it to the receiving rack.

[0004] In the stretching and straightening of large aluminum products such as profiles, pipes, bars, and strips, the elongation accuracy requirements are more stringent depending on the performance requirements of the products. The 1500-ton tension straightening machine itself uses a multi-turn absolute encoder to detect the position of the stretching head, the fixed head, and the clamps of the stretching head and the fixed head, as well as the distance Y between the two clamps when they are at zero position and the distance X from the clamp edge to the clamp. The signals are sent to the process module of the PLC system.

[0005] The positions of the clamps of the stretching head and the fixing head are manually detected, and the signals are sent to the process module of the PLC system. According to the formula: elongation = workpiece deformation length / original workpiece length * 100% (8 = △L / LX100%), that is, the original workpiece length = absolute position data of the stretching head + absolute position data of the fixing head + absolute position data between the clamps; the various data of the product provided by the process are input on the human-machine interface, and the elongation calculation begins through the PLC data to achieve control of the elongation accuracy.

[0006] The original encoder's elongation accuracy measurement transmission mechanism consisted of an encoder, gears, and a rack. The rack was fixed to the tension column of the 1500-ton tension straightener frame, and the gear was connected to the encoder and mounted on the moving tension head. The encoder transmitted signals to the PLC system's process module via the gear's rotation on the rack for elongation calculation. However, even slight vibrations or minor displacement of the two tension heads during operation could cause the gears and rack to disengage, interrupting the encoder's elongation accuracy measurement transmission, and in some cases, even damaging the encoder. Utility Model Content

[0007] The purpose of this invention is to provide an encoder transmission mechanism to solve the problem of interruption in elongation measurement caused by slight vibration or slight displacement of the two tension heads during operation of the original tension straightening machine.

[0008] The technical solution of this utility model is: an encoder transmission mechanism, including an encoder, a movable tension head and a fixed tension head. The encoder is provided with an encoder wheel, which is convex. The protruding section of the encoder wheel is provided with a sleeve hole, which is rotatably connected to the shaft of the encoder. The outer circumference of the straight section of the encoder wheel is provided with a groove, and a steel wire rope is wound on the groove. A steel wire rope adjuster is provided at both ends of the steel wire rope. One steel wire rope adjuster is connected to the movable tension head, and the other steel wire rope adjuster is connected to the fixed tension head.

[0009] As a further improvement of this utility model, the wire rope adjuster includes a base, an adjusting bolt is provided through the side of the base, the wire rope is wound in the section of the adjusting bolt located inside the base, and the two ends of the adjusting bolt extend out of the base respectively.

[0010] As a further improvement of this utility model, an adjuster handle is provided at one end of the adjusting bolt extending out of the base.

[0011] The beneficial effects of this utility model are as follows: This utility model is a mechanism for detecting tensile process parameters and transmitting elongation accuracy, designed to address the numerous faults and inaccuracies in the elongation accuracy measurement of the original encoder of a 1500-ton tension straightener. This utility model consists of a wire rope, an encoder wheel, and a wire rope adjuster, forming an encoder transmission mechanism that replaces the original encoder transmission mechanism composed of an encoder, gears, and racks. This solves many problems such as the interruption of elongation rate caused by slight vibration or slight displacement of the two tension heads during the operation of the tension straightener.

[0012] This invention is simple to process, low in cost, long in service life, and highly efficient. It ensures that even with slight vibrations or minor displacement of the two tension heads during operation of the tension straightener, data transmission will not be interrupted, and the elongation data of the product during the stretching process will not be lost. This invention utilizes the flexibility of the wire rope, combined with the rotation of the adjusting bolt to control the tension of the wire rope. During the stretching process of the straightener, if stress is caused by product breakage, it can be eliminated by rotating the adjusting bolt on the wire rope adjuster, effectively protecting the encoder's operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a structural diagram of the encoder wheel in this utility model;

[0015] Figure 3 This is a structural diagram of the regulator AA in this utility model;

[0016] Figure 4 This is a structural diagram of the regulator BB in this utility model;

[0017] Figure 5 This is a structural diagram of the regulator in the CC direction of this utility model;

[0018] Figure 6 This is a schematic diagram of the stretching head structure in this utility model;

[0019] Figure 7 This is a schematic diagram of the original technical structure.

[0020] In the diagram: 1-Encoder; 2-Encoder wheel; 21-Sleeve hole; 22-Groove; 3-Wire rope; 4-Wire rope adjuster; 41-Base; 42-Adjusting bolt; 43-Adjuster handle; 5-Fixed tension head; 6-Moving tension head; 7-Gear; 8-Rack. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-6 As shown, an encoder transmission mechanism includes an encoder 1, a movable tension head 6, and a fixed tension head 5. The encoder 1 is provided with an encoder wheel 2, which is convex. The protruding section of the encoder wheel 2 is provided with a sleeve hole 21, which is rotatably connected to the shaft of the encoder 1. The outer circumference of the straight section of the encoder wheel 2 is provided with a groove 22, and a steel wire rope 3 is wound on the groove 22. The two ends of the steel wire rope 3 are respectively provided with steel wire rope adjusters 4. One steel wire rope adjuster 4 is connected to the movable tension head 6, and the other steel wire rope adjuster 4 is connected to the fixed tension head 5.

[0023] The wire rope adjuster 4 includes a base 41, with an adjusting bolt 42 extending through the side of the base 41. The wire rope 3 is wound around the section of the adjusting bolt 42 located inside the base 41, and both ends of the adjusting bolt 42 extend out of the base 41. An adjuster handle 43 is provided at one end of the adjusting bolt 42 extending out of the base 41.

[0024] like Figures 6-7 As shown, the device for measuring the elongation accuracy of the 1500-ton tension straightener uses a multi-turn absolute encoder 1 to detect the positions of the tension head, fixed tension head 5, moving tension head 6, and fixed head clamps, the distance Y between the two clamps when they are at zero position, and the distance X from the clamp to the edge of the clamp. The signals are then sent to the process module of the PLC system.

[0025] The original encoder 1's elongation accuracy measurement transmission mechanism consists of encoder 1, gear 7, and rack 8. Rack 8 is fixed to the tension column of the 1500-ton tension straightener frame, and gear 7 is connected to encoder 1 and mounted on the moving stretching head 6. During the stretching operation of the 1500-ton tension straightener, gear 7 rotates and moves on rack 8, and encoder 1 transmits the signal to the process module of the PLC system for elongation calculation. However, slight vibration or minor displacement of the two stretching heads can cause gear 7 and rack 8 to disengage, interrupting the elongation accuracy measurement transmission of encoder 1, and in some cases, even damaging the encoder. This directly affects stretching production, makes it impossible to guarantee elongation accuracy detection using a multi-turn absolute encoder 1, and fails to meet the production process requirements of the products.

[0026] This invention uses a d5 flexible steel wire rope 3 to replace the original rigid gear 7 and rack 8. The encoder wheel 2 is installed on the encoder 1. The encoder 1 with the encoder wheel 2 and a steel wire rope adjuster 4 are installed on the moving end frame of the moving tension head 6. Another steel wire rope adjuster 4 is installed on the fixed end frame of the fixed tension head 5. The encoder wheel 2 drives the encoder 1 to move on the taut steel wire rope 3. The encoder 1 transmits the signal to the process module of the PLC system for elongation calculation.

[0027] The adjusting bolt 42 is an M30×1 fine thread bolt. When testing the elongation rate Y, it can be done manually by using an adjustable wrench to rotate the square part of one end of the adjusting bolt 42 on the wire rope adjuster 4, that is, to rotate the adjuster handle 43, so that the wire rope 3 is wound on the adjusting bolt 42 and its tightness is controlled. This allows for a slight adjustment of the encoder 1 to achieve the process stretching data of the PLC system.

[0028] This invention creatively replaces the original transmission mechanism of gear 7, rack 8, and encoder 1 with a steel wire rope 3 and pulley system. This reduces manufacturing costs, makes operation convenient, labor-saving, and safe, while effectively improving efficiency. It effectively solves the problem of interrupted production elongation rate signals caused by slight vibrations or minor displacement of the two stretching heads during tension straightening machine operation. It also solves the problem of stress damage to encoder 1 caused by product breakage during stretching production.

Claims

1. An encoder transmission mechanism comprising an encoder, a moving stretch head and a fixed stretch head, characterised in that: The encoder (1) is provided with an encoder wheel (2), which is convex. The protruding section of the encoder wheel (2) is provided with a sleeve hole (21), which is rotatably connected to the shaft of the encoder (1). The outer periphery of the straight section of the encoder wheel (2) is provided with a groove (22), and a steel wire rope (3) is wound on the groove (22). The two ends of the steel wire rope (3) are respectively provided with steel wire rope adjusters (4). One of the steel wire rope adjusters (4) is connected to the movable tension head (6), and the other steel wire rope adjuster (4) is connected to the fixed tension head (5).

2. An encoder transmission mechanism as claimed in claim 1, wherein: The wire rope adjuster (4) includes a base (41), an adjusting bolt (42) is provided through the side of the base (41), the wire rope (3) is wound in the section of the adjusting bolt (42) located in the base (41), and the two ends of the adjusting bolt (42) extend out of the base (41).

3. An encoder transmission mechanism as claimed in claim 2, wherein: The adjusting bolt (42) extends out of one end of the base (41) and is provided with an adjusting handle (43).

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