Double-twist machine wire arranging device and test method

Abstract

The present invention discloses a double-twisting machine wire arranging device test apparatus, which includes a test platform, a variable-frequency motor, a transmission assembly and a wire arranging device that are evenly arranged on the test platform. The variable-frequency motor is horizontally arranged on the test platform, and the transmission assembly is vertically arranged with respect to the variable-frequency motor; a first pulley is installed at the output end of the variable-frequency motor, and a third pulley and a second pulley are coaxially arranged in sequence from the inside to the outside at the outer end of the transmission shaft of the transmission assembly. A fourth pulley is arranged on the input shaft of the wire arranging device, and the fourth pulley and the third pulley are arranged on the same vertical line. The first pulley and the second pulley are connected by a first synchronous belt, and the third pulley and the fourth pulley are connected by a second synchronous belt. By simulating the running speed and rated load of the wire arranging device, rapid testing can be carried out immediately after the design and assembly of the wire arranging device are completed, without waiting for the overall assembly of the equipment to be completed for testing. The test cycle is short, the test cost is low, the design verification is timely, and the design and R & D efficiency is greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of test equipment, and particularly relates to a double-twisting machine wire arranging device test apparatus and a test method. Background Art

[0002] The double-twisting machine is a wire stranding production equipment for steel cord. The wire arranging device is an important component in the double-twisting machine equipment. Generally, the wire arranging wheel on the wire arranging device drives the wire to reciprocate between the span of the winding spool, so as to realize the neat and orderly winding of the twisted cord on the spool. During operation, the wire arranging wheel in the wire arranging device is affected by the wire tension and bears a large load. The guide rod and the guide in the wire arranging device move relative to each other, with large friction. Whether the wire arranging device can work normally after bearing the rated load needs to be verified through a load test. The traditional load test is that after the components of the double-twisting machine are completely assembled, the equipment first runs without load, and then runs with wire load for test verification. This test method needs to be carried out after the equipment is completely assembled, with a long test cycle, high test cost, and late problem discovery. Especially after the design of a new type of wire arranging device is completed, the waiting time for verification is long, which does not meet the requirements of high-efficiency research and development in the market economy. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a test apparatus and a test method that can be immediately verified only after the wire arranging device is assembled.

[0004] To achieve the above purpose, the double-twisting machine wire arranging device test apparatus designed by the present invention includes a test platform, a frequency conversion motor, a transmission assembly and a wire arranging device that are evenly arranged on the test platform. The frequency conversion motor is horizontally arranged on the test platform, and the transmission assembly is vertically arranged with respect to the frequency conversion motor; a first pulley is installed at the output end of the frequency conversion motor, and a third pulley and a second pulley are coaxially arranged in sequence from the inside to the outside at the outer end of the transmission shaft of the transmission assembly. A fourth pulley is arranged on the input shaft of the wire arranging device, and the fourth pulley and the third pulley are arranged on the same vertical line. The first pulley and the second pulley are connected by a first synchronous belt, and the third pulley and the fourth pulley are connected by a second synchronous belt.

[0005] Further, the first pulley is represented by Z1, the second pulley is represented by Z2, the third pulley is represented by Z3, and the fourth pulley is represented by Z4. The number of teeth of Z1, Z2, Z3, and Z4 satisfies the following wire arranging device formula:

[0006] Output speed of the frequency conversion motor × (Z1 / Z2) × (Z3 / Z4) = Normal operating speed of the wire arranging device.

[0007] Further, the transmission assembly further includes a transmission base and a deflection frame. The deflection frame is placed on the right side of the transmission base. A hole retaining ring is installed on the inner hole of the transmission base near the deflection frame side. The inner end of the transmission shaft passes through the inner hole of the deflection frame and then inserts into the inner hole of the transmission base and passes through the hole retaining ring. A positioning sleeve is sleeved on the transmission shaft located in the inner hole of the transmission base. The first bearing and the second bearing are coaxially sleeved on the transmission shaft and are respectively located at both ends of the positioning sleeve. An end cover is installed on the left end face of the transmission shaft, and end cover screws are installed on the end cover to axially fix the transmission shaft.

[0008] Further, a pressing shaft is arranged in the inner hole above the deflection frame. A pressing bearing is installed on the right side of the pressing shaft. The left side of the pressing shaft is axially fixed with a deflection frame nut. A pressing wheel is installed on the pressing bearing. The deflection frame drives the pressing shaft and the pressing wheel to rotate around the transmission shaft until the pressing wheel presses on the second synchronous pulley. The deflection frame is fixed and locked with deflection frame screws below.

[0009] Further, a positioning block is installed below the transmission base. The positioning block is installed on the test platform through positioning block screws; an adjusting screw is installed in the middle hole of the positioning block. The end face of the adjusting screw shaft abuts against the lower side surface of the transmission base and is then locked with a positioning block nut.

[0010] A test method for the double-twisting machine wire arranging device as described above is as follows:

[0011] 1) Start the frequency conversion motor. The frequency conversion motor runs no-load at the output speed of the frequency conversion motor for 20 - 40 minutes, and observe the working condition of the frequency conversion motor and the running condition of the wire arranging device; if there is no abnormality, proceed to the next step;

[0012] 2) Turn off the frequency conversion motor. Hang a counterweight block with a rated load of 30% on the wire arranging wheel of the wire arranging device. Start the frequency conversion motor. The frequency conversion motor runs with load at the output speed of the frequency conversion motor for 20 - 40 minutes, and observe the working condition of the frequency conversion motor and the running condition of the wire arranging device; if there is no abnormality, proceed to the next step;

[0013] 3) Turn off the frequency conversion motor. Hang a counterweight block with a rated load of 60% on the wire arranging wheel of the wire arranging device. Start the frequency conversion motor. The frequency conversion motor runs with load at the output speed of the frequency conversion motor for 20 - 40 minutes, and observe the working condition of the frequency conversion motor and the running condition of the wire arranging device; if there is no abnormality, proceed to the next step;

[0014] 4) Turn off the frequency conversion motor. Hang a counterweight block with a rated load of 100% on the wire arranging wheel of the wire arranging device. Start the frequency conversion motor. The frequency conversion motor runs with load at the output speed of the frequency conversion motor for 7 - 10 hours, stop for 1 - 2 hours, then run with load at the output speed of the frequency conversion motor for 7 - 10 hours, stop for 1 - 2 hours, and cycle this operation until the wire arranging device runs with load for a cumulative of 72 - 86 hours; during the test process, observe the working condition of the frequency conversion motor and the running condition of the wire arranging device in real time; if there is no abnormality, proceed to the next step;

[0015] 5) Turn off the variable-frequency motor, measure the temperatures of the guide rod and the guide in the wire arranging device. If there is no abnormality, proceed to the next step;

[0016] 6) Disassemble the guide rod and the guide in the wire arranging device, and observe the wear conditions of the guide rod and the guide;

[0017] Test evaluation: When all the above test steps are passed and no abnormality occurs, it can be determined that the load test of the wire arranging device of the double-twisting machine is qualified; if any one of the tests shows an abnormality, the cause needs to be found out for rectification, and a repeat test is carried out according to the test steps.

[0018] Further, the evaluation index in step 5) is: the temperature of the guide rod and the guide should be less than 60 °C after running for 72 to 86 hours.

[0019] Further, the evaluation index in step 6) is: the guide rod has no wear, and the wear of the working surface of the guide is not more than 1 mm.

[0020] Compared with the prior art, the present invention has the following advantages: By simulating the running speed and rated load of the wire arranging device, after the wire arranging device is designed and assembled, a quick test can be carried out immediately without waiting for the overall assembly of the equipment to be completed for the test. The test period is short, the test cost is low, the design verification is timely, and the design and R & D efficiency is greatly improved. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the test device for the wire arranging device of the double-twisting machine of the present invention;

[0022] Figure 2 is Figure 1 a schematic structural diagram of the transmission assembly in

[0023] Among them, the test platform 1, the transmission assembly 2 (wherein: the second pulley 2.1, the third pulley 2.2, the pressing wheel 2.3, the pressing bearing 2.3a, the second synchronous belt 2.4, the transmission base 2.5, the hole retaining ring 2.5a, the first bearing 2.5b, the positioning sleeve 2.5c, the second bearing 2.5d, the end cover 2.5e, the end cover screw 2.5f, the transmission base screw 2.5g, the transmission shaft 2.6, the deflection frame 2.7, the pressing shaft 2.7a, the deflection frame nut 2.7b, the deflection frame screw 2.7c, the positioning block 2.8, the positioning block screw 2.8a, the adjusting screw 2.8b, the positioning block nut 2.8C), the wire arranging device 3 (wherein: the fourth pulley 3.1, the counterweight 3.2), the variable-frequency motor 4 (wherein: the first pulley 4.1, the first synchronous belt 4.2). Detailed Description of the Invention

[0024] The present invention will be further described in detail below with reference to specific embodiments.

[0025] As shown Figure 1 in the double-twisting machine wire arranging device test apparatus, which includes a test platform 1, a variable-frequency motor 4, a transmission assembly 2, and a wire arranger 3 that are evenly arranged on the test platform 1. The variable-frequency motor 4 is horizontally arranged on the test platform 1, and the transmission assembly 2 is vertically arranged with respect to the variable-frequency motor 4. A first pulley 4.1 is installed at the output end of the variable-frequency motor 4. The first pulley 4.1 is denoted as Z1, and Z1 is the output pulley of the variable-frequency motor 4. At the outer end of the transmission shaft 2.6 of the transmission assembly 2, a third pulley 2.2 and a second pulley 2.1 are coaxially arranged in sequence from inside to outside. The second pulley 2.1 is denoted as Z2, and Z2 is the input pulley of the variable-frequency motor 4. The third pulley 2.2 is denoted as Z3, and Z3 is the output pulley of the transmission assembly 2. A fourth pulley 3.1 is provided on the input shaft of the wire arranger 3. The fourth pulley 3.1 is denoted as Z4, and Z4 is the input pulley of the wire arranger assembly 3. The fourth pulley 3.1 and the third pulley 2.2 are arranged on the same vertical line. The first pulley 4.1 and the second pulley 2.1 are connected by a first synchronous belt 4.2, and the third pulley 2.2 and the fourth pulley 3.1 are connected by a second synchronous belt 2.4. Moreover, a pressing pulley 2.3 is installed at the middle position of the second synchronous belt 2.4. The pressing pulley 2.3 is installed on the transmission assembly 2, and the function of the pressing pulley 2.3 is to press the second synchronous belt 2.4.

[0026] The number of teeth of Z1, Z2, Z3, and Z4 satisfies the following wire arranger formula:

[0027] Output speed of the variable-frequency motor × (Z1 / Z2) × (Z3 / Z4) = Normal operating speed of the wire arranger (1)

[0028] Wherein: The number of teeth of Z4 is selected according to the number of teeth of the wire arranger in the double-twisting machine equipment; the selection of the number of teeth of Z1 to Z3 satisfies formula (1), and at the same time, it is ensured that first synchronous belt 4.2 and second synchronous belt 2.4 with appropriate lengths can be selected. To ensure that the number of teeth of Z1 to Z4 is appropriate and the belt lengths of the first synchronous belt 4.2 and the second synchronous belt 2.4 are appropriate, the normal operating speed of the wire arranger in formula (1) is adjustable between 180 rpm and 250 rpm.

[0029] The transmission assembly 2 further includes a transmission base 2.5 and a deflection frame 2.7. The deflection frame 2.7 is placed on the right side of the transmission base 2.5. A hole snap ring 2.5a is installed on the inner hole of the transmission base 2.5 near the side of the deflection frame 2.7. The inner end of the transmission shaft 2.6 passes through the inner hole of the deflection frame 2.7 and then inserts into the inner hole of the transmission base 2.5 and passes through the hole snap ring 2.5a. A positioning sleeve 2.5c is sleeved on the transmission shaft 2.6 located in the inner hole of the transmission base 2.5. The first bearing 2.5b and the second bearing 2.5d are coaxially sleeved on the transmission shaft 2.6 and are respectively located at both ends of the positioning sleeve 2.5c. An end cover 2.5e is installed on the left end face of the transmission shaft 2.6, and an end cover screw 2.5f is installed on the end cover 2.5e to axially fix the transmission shaft 2.6. The third pulley 2.2 and the second pulley 2.1 are arranged at the outer end of the transmission shaft 2.6. A pressing shaft 2.7a is arranged in the inner hole above the deflection frame 2.7. A pressing bearing 2.3a is installed on the right side of the pressing shaft 2.7a. The left side of the pressing shaft 2.7a is axially fixed by a deflection frame nut 2.7b. The pressing wheel 2.3 is installed on the pressing bearing 2.3a. The deflection frame 2.7 can drive the pressing shaft 2.7a and the pressing wheel 2.3 to rotate around the transmission shaft 2.6 until the pressing wheel 2.3 presses on the second synchronous pulley 2.4. At the same time, the deflection frame 2.7 is fixed and locked by a deflection frame screw 2.7c below. The present invention can replace the number of teeth of the second pulley 2.1, the third pulley 2.2 and the belt length of the second synchronous pulley 2.4 according to the operating speeds required by different models of wire arranging devices to meet different operating speeds.

[0030] The transmission base 2.5 is installed on the test platform 1 through a transmission base 2 screw 2.5g. A positioning block 2.8 is installed below the transmission base 2.5. The positioning block 2.8 is installed on the test platform 1 through a positioning block screw 2.8a. An adjusting screw 2.8b is installed in the middle hole of the positioning block 2.8. The axial end face of the adjusting screw 2.8b abuts against the lower side surface of the transmission base 2.5 and is then locked by a positioning block nut 2.8C. The positioning block 2.8 is used to adjust the installation position of the transmission base 2.5 when replacing the number of teeth of the second pulley 2.1, the third pulley 2.2 and the second synchronous pulley 2.4.

[0031] According to the normal operating speed and rated load of the wire arranging device, select the motor model. Generally, a variable-frequency Y2VP100L2-4 motor is selected, with a rated speed of 1500 rpm; according to the rated speed of the variable-frequency motor, select the output speed of the variable-frequency motor to be 60% - 80% of the rated speed, generally select 70%, that is, 1050 rpm; the normal operating speed of the wire arranging device is 180 rpm - 250 rpm, generally select the intermediate value, that is, about 215 rpm; thus, the reduction from the output speed of the variable-frequency motor of 1050 rpm to the normal operating speed of the wire arranging device of 215 rpm needs to be achieved through the transmission assembly. It is not easy to achieve a single-stage reduction, so the transmission system is designed as a two-stage reduction drive.

[0032] The test method of double twist machine cable arrangement device is as follows:

[0033] Start the variable frequency motor, and run it at no-load (i.e., no counterweight is hung on the cable arranging wheel) for 20 to 40 minutes at the output speed of the variable frequency motor, and observe the working conditions of the variable frequency motor and the cable arranging device; if there is no abnormality, proceed to the next step.

[0034] Turn off the variable frequency motor, hang a counterweight block with a rated load of 30% on the cable arranging wheel of the cable arranging device, start the variable frequency motor, and run the variable frequency motor at the output speed of the variable frequency motor for 20 to 40 minutes. Observe the working conditions of the variable frequency motor and the cable arranging device; if there is no abnormality, proceed to the next step;

[0035] Turn off the variable frequency motor, hang a counterweight block with a rated load of 60% on the cable arranging wheel of the cable arranging device, start the variable frequency motor, and run the variable frequency motor at the output speed of the variable frequency motor for 20 to 40 minutes. Observe the working conditions of the variable frequency motor and the cable arranging device; if there is no abnormality, proceed to the next step;

[0036] Turn off the variable frequency motor, hang a counterweight block with a rated load of 100% on the cable traversing wheel, start the variable frequency motor, and let it run for 7 to 10 hours at the output speed of the variable frequency motor, then stop for 1 to 2 hours, then run for 7 to 10 hours at the output speed of the variable frequency motor, then stop for 1 to 2 hours, and repeat this operation until the cable traversing load runs for a total of 72 to 86 hours; during the test, observe the working conditions of the variable frequency motor and the cable traversing device in real time; if there is no abnormality, proceed to the next step;

[0037] Turn off the variable frequency motor and measure the temperature of the guide rod and guide in the cable arranging device. Evaluation index: The temperature of the guide rod and guide should be less than 60℃ after running for 72 to 86 hours; if there is no abnormality, proceed to the next step;

[0038] Disassemble the guide rod and guide in the cable arranger, and observe the wear of the guide rod and guide; evaluation indicators: the guide rod has no wear, and the wear of the guide working surface is no more than 1mm.

[0039] Test evaluation: When all the above test steps are passed and no abnormalities occur, the double twist machine cable arrangement device load test can be deemed qualified; if any of the tests is abnormal, it is necessary to find out the cause and make corrections, and repeat the test according to the test steps.

Claims

1. A testing device for the wire arranging device of a double-twisting machine, characterized in that: It includes a test platform (1), a variable-frequency motor (4), a transmission assembly (2), and a wire arranging device (3) which are all arranged on the test platform (1). The variable-frequency motor (4) is horizontally arranged on the test platform (1), and the transmission assembly (2) is vertically arranged with respect to the variable-frequency motor (4). A first pulley (4.1) is installed at the output end of the variable-frequency motor (4). On the outer end of the transmission shaft (2.6) of the transmission assembly (2), a third pulley (2.2) and a second pulley (2.1) are coaxially arranged in sequence from inside to outside. A fourth pulley (3.1) is arranged on the input shaft of the wire arranging device (3). The fourth pulley (3.1) and the third pulley (2.2) are arranged on the same vertical line. The first pulley (4.1) and the second pulley (2.1) are connected by a first synchronous belt (4.2), and the third pulley (2.2) and the fourth pulley (3.1) are connected by a second synchronous belt (2.4). The first pulley (4.1) is represented by Z1, the second pulley (2.1) is represented by Z2, the third pulley (2.2) is represented by Z3, and the fourth pulley (3.1) is represented by Z4. The number of teeth of Z1, Z2, Z3, and Z4 satisfies the following wire arranging device formula: Output speed of the variable-frequency motor × (Z1 / Z2) × (Z3 / Z4) = Normal operating speed of the wire arranging device.

2. The testing device for the wire arranging device of a double-twisting machine according to claim 1, characterized in that: The transmission assembly (2) further includes a transmission base (2.5) and a deflection frame (2.7). The deflection frame (2.7) is placed on the right side of the transmission base (2.5). A hole retaining ring (2.5a) is installed on the inner hole of the transmission base (2.5) near the deflection frame (2.7). The inner end of the transmission shaft (2.6) passes through the inner hole of the deflection frame (2.7) and then inserts into the inner hole of the transmission base (2.5) and passes through the hole retaining ring (2.5a). A positioning sleeve (2.5c) is sleeved on the transmission shaft (2.6) located in the inner hole of the transmission base (2.5). A first bearing (2.5b) and a second bearing (2.5d) are coaxially sleeved on the transmission shaft (2.6) and are respectively located at both ends of the positioning sleeve (2.5c). An end cover (2.5e) is installed on the left end face of the transmission shaft (2.6), and an end cover screw (2.5f) is installed on the end cover (2.5e) to axially fix the transmission shaft (2.6).

3. The testing device for the wire arranging device of a double-twisting machine according to claim 2, characterized in that: A pressing shaft (2.7a) is arranged in the inner hole above the deflection frame (2.7). A pressing bearing (2.3a) is installed on the right side of the pressing shaft (2.7a). The left side of the pressing shaft (2.7a) is axially fixed by a deflection frame nut (2.7b). A pressing wheel (2.3) is installed on the pressing bearing (2.3a). The deflection frame (2.7) drives the pressing shaft (2.7a) and the pressing wheel (2.3) to rotate around the transmission shaft (2.6) until the pressing wheel (2.3) presses on the second synchronous belt (2.4). The deflection frame (2.7) is fixed and locked by a deflection frame screw (2.7c) below.

4. The testing device for the wire arranging device of a double-twisting machine according to claim 2, characterized in that: A positioning block (2.8) is installed below the transmission base (2.5). The positioning block (2.8) is installed on the test platform (1) through positioning block screws (2.8a). An adjusting screw (2.8b) is installed in the middle hole of the positioning block (2.8). The axial end face of the adjusting screw (2.8b) abuts against the lower side surface of the transmission base (2.5) and is then locked with a positioning block nut (2.8C).

5. A testing method for the testing device of the wire arranging device of a double-twisting machine as claimed in claim 1, characterized in that: The test method is as follows: 1) Start the frequency conversion motor. The frequency conversion motor runs no-load at the output speed of the frequency conversion motor for 20 - 40 minutes, and observe the working condition of the frequency conversion motor and the running condition of the wire arranging device; if there is no abnormality, proceed to the next step; 2) Turn off the frequency conversion motor, hang a counterweight block (3.2) with a rated load of 30% on the wire arranging wheel of the wire arranging device, start the frequency conversion motor, and the frequency conversion motor runs with load at the output speed of the frequency conversion motor for 20 - 40 minutes, and observe the working condition of the frequency conversion motor and the running condition of the wire arranging device; if there is no abnormality, proceed to the next step; 3) Turn off the frequency conversion motor, hang a counterweight block (3.2) with a rated load of 60% on the wire arranging wheel of the wire arranging device, start the frequency conversion motor, and the frequency conversion motor runs with load at the output speed of the frequency conversion motor for 20 - 40 minutes, and observe the working condition of the frequency conversion motor and the running condition of the wire arranging device; if there is no abnormality, proceed to the next step; 4) Turn off the frequency conversion motor, hang a counterweight block (3.2) with a rated load of 100% on the wire arranging wheel of the wire arranging device, start the frequency conversion motor, and the frequency conversion motor runs with load at the output speed of the frequency conversion motor for 7 - 10 hours, stop for 1 - 2 hours, then run with load at the output speed of the frequency conversion motor for 7 - 10 hours again, stop for 1 - 2 hours, and cycle this operation until the wire arranging device runs with load for a cumulative of 72 - 86 hours; during the test process, observe the working condition of the frequency conversion motor and the running condition of the wire arranging device in real time; if there is no abnormality, proceed to the next step; 5) Turn off the frequency conversion motor, measure the temperatures of the guide rod and the guide in the wire arranging device, if there is no abnormality, proceed to the next step; 6) Disassemble the guide rod and the guide in the wire arranging device, and observe the wear conditions of the guide rod and the guide; Test evaluation: When all the above test steps are passed and no abnormality occurs, it can be determined that the load test of the wire arranging device of the double-twisting machine is qualified; if there is an abnormality in one of the tests, the cause needs to be found out for rectification, and a repeat test is carried out according to the test steps.

6. The testing method for the testing device of the wire arranging device of a double-twisting machine according to claim 5, characterized in that: The evaluation index in step 5) is: the temperatures of the guide rod and the guide should be less than 60 °C after running for 72 - 86 hours.

7. The testing method for the testing device of the wire arranging device of a double-twisting machine according to claim 5, characterized in that: The evaluation index in step 6) is: the guide rod has no wear, and the wear of the working surface of the guide is not more than 1 mm.

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