CN108642700B - Double-temperature double-control dynamic temperature control method and device for wide tricot machine - Google Patents
Double-temperature double-control dynamic temperature control method and device for wide tricot machine Download PDFInfo
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- CN108642700B CN108642700B CN201810597215.4A CN201810597215A CN108642700B CN 108642700 B CN108642700 B CN 108642700B CN 201810597215 A CN201810597215 A CN 201810597215A CN 108642700 B CN108642700 B CN 108642700B
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- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
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- D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
- D04B35/30—Devices for controlling temperature of machine parts
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Abstract
The invention discloses a double-temperature double-control dynamic temperature control method and a double-temperature double-control dynamic temperature control device for a wide-width tricot machine, and the device comprises a machine body, wherein a sectional swing shaft is arranged on the machine body, a swing arm is arranged on the sectional swing shaft, a needle bed is connected onto the swing arm, a heating device and a temperature sensor A are arranged in the machine body, the temperature sensor A is electrically connected with a temperature control meter A, a temperature sensor B is arranged on the outer surface of the machine body, and the temperature sensor B is electrically connected with the temperature; the temperature sensor A and the temperature sensor B are both electrically connected with an upper computer. The invention achieves the purpose of keeping the temperature of the machine body constant under different environments and working conditions by alternately controlling the two temperature control systems, ensures the stability of the needle bed and further achieves the purpose of normal operation of the machine under different environments and working conditions.
Description
Technical Field
The invention is used in the technical field of warp knitting machines, in particular to the field of wide-width high-speed tricot machines in the tricot art.
Background content
Tricot machines in tricot are a large class of warp knitting machines, have a structure that the drawing direction of the fabric forms an included angle of about 115 degrees with the plane of a needle bar, are also called high-speed warp knitting machines, and are commonly used for knitting fabrics such as clothes, mosquito nets, headkerchief, bed sheets, small-pattern household fabrics and the like. The tricot machine has the characteristics of high machine number, few guide bars, high knitting speed, high production efficiency and the like, and occupies a considerable proportion in the total amount of the tricot machine.
The high-speed tricot machine for tricot department, especially the machine with larger width, is sensitive to temperature change and has higher requirements on temperature and humidity of a workshop. The tricot machine of the tricot machine requires that the machine can be normally started to operate when the oil temperature reaches 41 ℃, and the oil temperature is kept about 42 ℃ when the machine operates. The traditional tricot machine is equipped with an automatic oil temperature control system, as shown in the structure outside the dotted line in fig. 1, a temperature control meter a6 is connected with a temperature sensor a4, the current oil temperature is detected in real time through a temperature sensor a4, and a heating pipe 5 and a cooler 8 are also connected with a temperature control meter a4 and controlled by the temperature control meter a 4. When the oil temperature is lower, the heating pipe 5 heats the oil to reach the temperature required by work, when the machine runs, the moving part of the machine can increase the temperature by friction to increase the temperature of the machine, and when the oil temperature is higher than the temperature required by normal work of the machine, the temperature control gauge A4 controls the cooler 8 to start to radiate the oil temperature.
The heating temperature SV value of the machine is set to be 41 ℃ in a temperature control table A4, the heat dissipation temperature is set to be 43 ℃, and the temperature control system ensures that the oil temperature of the machine is stabilized at about 42 ℃ to meet the technical requirement of the temperature value required by the machine in normal operation.
However, high speed tricot machines, particularly large width machines, are sensitive to temperature variations. With the structure shown in fig. 1, the oil temperature and the bed body 1 temperature can be basically balanced at 42 ℃ when the machine normally operates. When the machine needs to be stopped (such as raw material replacement, machine maintenance and the like) for a long time (more than 1 hour), the oil temperature can be stabilized at 41 ℃ through the original oil temperature automatic control system, at the moment, the moving part of the machine does not move and is heated by friction, the temperature of the machine body 1 is maintained by the oil temperature, and due to the difference of the heat conductivity coefficients of the machine body 1 (metal material) and the oil, and the influence of the external environment temperature and the air flow on the machine body 1 exposed in the air is larger, the temperature of the machine body 1 is lower than the oil temperature. Taking a tricot machine with a width of 268 inches as an example, according to field data statistics, when the oil temperature is maintained at 41 ℃ when the machine is stopped for a long time, the temperature of the bed body 1 is basically maintained at 36 ℃. When the temperature difference of the lathe bed 1 changes, the principle of expansion with heat and contraction with cold shows that the lathe bed 1 can expand and contract in the length direction. As shown in figure 1, a wall plate 9 is arranged on the bed body 1, a sectional swing shaft 10 is arranged on the wall plate 9, the needle bed 7 is arranged on the sectional swing shaft 10 through a swing arm 11, the contraction and expansion of the bed body 1 directly influence the contraction and expansion of the needle bed 7, and the contraction and expansion of the needle bed 7 directly influence the operation of the machine.
The pan head (raw material) needs to be replaced every two days when the warp knitting machine is normally started to operate, the replacement time is more than 1 hour every time, for the high-speed tricot machine, particularly the wide-width tricot machine, the needle rubbing phenomenon can occur after the machine is stopped for a long time (more than 1 hour) every time, the machine cannot be normally started to operate, the machine can be normally started to operate only by repeatedly adjusting the space between knitting needles, and the production efficiency of the machine is seriously influenced.
Disclosure of Invention
The invention overcomes the defects of the prior art and discloses a method and a device for controlling the double-temperature and double-control dynamic temperature of a wide tricot machine in the Teridae. The invention achieves the purpose of keeping the temperature of the machine body constant under different environments and working conditions by alternately controlling the two temperature control systems, ensures the stability of the needle bed and further achieves the purpose of normal operation of the machine under different environments and working conditions.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a double-temperature double-control dynamic temperature control method for a wide tricot machine comprises the following steps:
firstly, dynamically acquiring a temperature value of a lathe bed in real time by a temperature sensor B through a temperature control meter B, detecting a machine halt signal by an upper computer once a machine is halted, starting the temperature control meter B, and writing the acquired current temperature value PV of the lathe bed into a heating setting parameter SV of the temperature control meter B; dynamically adjusting the temperature of the lathe bed by taking a set value SV of a temperature control table B as a reference, and keeping the temperature of the lathe bed at a temperature value before shutdown;
step two, the temperature control meter B and the temperature control meter A jointly act to control the oil temperature after the machine is stopped, the temperature of the machine body is ensured to be stabilized at a temperature value before the machine is stopped by controlling the oil temperature, the machine body is ensured not to stretch in the length direction after the machine is stopped, and the needle bed is ensured not to stretch in the length direction, so that the machine can be started at any time after the machine is stopped;
and step three, when the machine normally runs, the upper computer controls the temperature control meter B to stop outputting, and the original oil temperature automatic control system maintains the oil temperature to be constant.
In the first step, when the machine is switched from the running state to the stop state, the upper computer writes the acquired current temperature value PV of the bed into the heating setting parameter SV of the temperature control table B through the 485 bus.
A double-temperature double-control dynamic temperature control device of a wide-width tricot machine comprises a machine body, wherein a sectional swing shaft is mounted on the machine body, a swing arm is mounted on the sectional swing shaft, a needle bed is connected to the swing arm, a heating device and a temperature sensor A are mounted in the machine body, the temperature sensor A is electrically connected with a temperature control meter A, a temperature sensor B is mounted on the outer surface of the needle bed, and the temperature sensor B is electrically connected with the temperature control meter B; and the temperature sensor A and the temperature sensor B are electrically connected with an upper computer.
In the further improvement, a cavity is formed in the needle bed, oil is placed in the cavity, the heating device is located in the oil, and the oil is communicated with the cooling device.
In a further improvement, the heating device is a heating pipe, and the cooling device is a cooler.
In a further improvement, the sectional swing shaft is connected to a wall plate in a shaft mode, and the wall plate is fixed on the bed body.
The invention has the following advantages:
after the double-temperature double-control temperature control method is used on a tricot machine product with 268 inches in width of our company, the original needle wiping phenomenon cannot occur after the machine is stopped for a long time, and the machine can be started up and operated at any time no matter how long the machine is stopped, so that the production efficiency of the machine is greatly improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Wherein, 1-a lathe bed; 2-temperature sensor B; 3-temperature control table B; 4-temperature sensor a; 5-heating the tube; 6-temperature control table A; 7-needle bed; 8-a cooler; 9-wallboard; 10-sectional pendulum shaft; 11-a swing arm; 12-an upper computer; 13-oil.
Detailed Description
Example 1
As shown in fig. 1, a temperature control meter B3 and a temperature sensor B2 are added, as shown in a dotted line frame in fig. 1, the temperature sensor B2 is installed on the bed 1 and connected to the temperature control meter B3 to detect the temperature of the bed 1 in real time, the heating pipe 5 is also connected to the temperature control meter B3 and controlled by the temperature control meter B3, and the upper computer 12 dynamically reads and writes data from and into the temperature control meter B3 in real time through a 485 bus, and is alternately controlled by combining with an original automatic oil temperature control system. The temperature of the bed body 1 is ensured to be stable by using a method of dynamically controlling the temperature of the bed body 1, and the purpose that the needle bed 7 does not stretch or stretches less under different environments and working conditions is achieved.
The specific implementation steps are as follows:
step one, when the machine normally runs, the upper computer 12 controls the temperature control meter B3 to stop outputting, and the original oil temperature automatic control system maintains the oil temperature to be constant.
And step two, dynamically acquiring a temperature value of the lathe bed 1 in real time by the temperature control meter B3 through the temperature sensor B2, detecting a machine stop signal by the upper computer 12 once the machine is stopped, starting the temperature control meter B3, and writing the acquired current temperature value PV of the lathe bed into a heating setting parameter SV of the temperature control meter B3 through a 485 bus. And dynamically adjusting the temperature of the lathe bed by taking the set value SV of the temperature control table B3 as a reference, and keeping the temperature of the lathe bed 1 at a temperature value before shutdown.
And step three, when the machine is stopped, the temperature control meter B3 and the temperature control meter A6 act together to control the oil temperature, the temperature of the machine body 1 is ensured to be stabilized at a temperature value before the machine is stopped by controlling the oil temperature, the machine body 1 is ensured not to stretch in the length direction after the machine is stopped, the needle bed 7 is ensured not to stretch in the length direction, and the purpose of starting the machine at any time no matter how long the machine is stopped is achieved.
The above embodiment is only one specific embodiment of the present invention, and simple changes, substitutions, and the like are also within the scope of the present invention.
Claims (6)
1. A double-temperature double-control dynamic temperature control method for a wide tricot machine in a Teridae is characterized by comprising the following steps:
firstly, dynamically acquiring a temperature value of a lathe bed (1) in real time by a temperature sensor B (2) through a temperature control meter B (3), detecting a machine halt signal by an upper computer (12) once a machine is halted, starting the temperature control meter B (3), and writing the acquired current temperature value PV of the lathe bed into a heating setting parameter SV of the temperature control meter B (3); dynamically adjusting the temperature of the lathe bed by taking a set value SV of a temperature control table B (3) as a reference, and keeping the temperature of the lathe bed (1) at a temperature value before shutdown;
step two, the temperature control meter B (3) and the temperature control meter A (6) jointly act to control the oil temperature after the machine is stopped, the temperature of the machine body (1) is ensured to be stabilized at a temperature value before the machine is stopped by controlling the oil temperature, the machine body (1) is ensured not to stretch in the length direction after the machine is stopped, and the needle bed (7) is ensured not to stretch in the length direction, so that the machine can be started at any time after the machine is stopped;
and step three, when the machine normally runs, the upper computer (12) controls the temperature control meter B (3) to stop outputting, and the original oil temperature automatic control system maintains the oil temperature to be constant.
2. The double-temperature double-control dynamic temperature control method of the wide tricot machine in the claim 1, characterized in that in the step one, when the machine is changed from the running state to the stop state, the upper computer (12) writes the acquired current temperature value PV of the bed body into the heating setting parameter SV of the temperature control table B (3) through a 485 bus.
3. A double-temperature double-control dynamic temperature control device of a wide-width tricot machine comprises a machine body (1), wherein a sectional swing shaft (10) is installed on the machine body (1), a swing arm (11) is installed on the sectional swing shaft (10), a needle bed (7) is connected to the swing arm (11), a heating device and a temperature sensor A (4) are installed in the machine body (1), and the temperature sensor A (4) is electrically connected with a temperature control meter A (6), and is characterized in that a temperature sensor B (2) is installed on the outer surface of the machine body (1), and a temperature sensor B (2) is electrically connected with a temperature control meter B (3); the temperature sensor A (4) and the temperature sensor B (2) are both electrically connected with an upper computer (12);
the control device has the following use method:
firstly, dynamically acquiring a temperature value of a lathe bed (1) in real time by a temperature sensor B (2) through a temperature control meter B (3), detecting a machine halt signal by an upper computer (12) once a machine is halted, starting the temperature control meter B (3), and writing the acquired current temperature value PV of the lathe bed into a heating setting parameter SV of the temperature control meter B (3); dynamically adjusting the temperature of the lathe bed by taking a set value SV of a temperature control table B (3) as a reference, and keeping the temperature of the lathe bed (1) at a temperature value before shutdown;
step two, the temperature control meter B (3) and the temperature control meter A (6) jointly act to control the oil temperature after the machine is stopped, the temperature of the machine body (1) is ensured to be stabilized at a temperature value before the machine is stopped by controlling the oil temperature, the machine body (1) is ensured not to stretch in the length direction after the machine is stopped, and the needle bed (7) is ensured not to stretch in the length direction, so that the machine can be started at any time after the machine is stopped;
and step three, when the machine normally runs, the upper computer (12) controls the temperature control meter B (3) to stop outputting, and the original oil temperature automatic control system maintains the oil temperature to be constant.
4. The double-temperature double-control dynamic temperature control device of the wide tricot machine in the Teridae as claimed in claim 3, wherein a cavity is formed in the bed body (1), oil (13) is placed in the cavity, the heating device is positioned in the oil (13), and the oil (13) is communicated with the cooling device.
5. The double-temperature double-control dynamic temperature control device of the wide tricot machine of claim 4, wherein the heating device is a heating pipe (5) and the cooling device is a cooler (8).
6. The double-temperature double-control dynamic temperature control device of the wide tricot machine in the Telicon as claimed in claim 3, wherein the sectional swing shaft (10) is journalled on a wall plate (9), and the wall plate (9) is fixed on the bed (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810597215.4A CN108642700B (en) | 2018-06-12 | 2018-06-12 | Double-temperature double-control dynamic temperature control method and device for wide tricot machine |
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| CN201810597215.4A CN108642700B (en) | 2018-06-12 | 2018-06-12 | Double-temperature double-control dynamic temperature control method and device for wide tricot machine |
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| CN108642700B true CN108642700B (en) | 2020-04-17 |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD280802B5 (en) * | 1989-03-27 | 1999-07-15 | Malimo Maschinenbau Gmbh Chemn | Device for normalizing a bar on a warp knitting machine, in particular a knitting machine |
| CN101538772B (en) * | 2009-04-23 | 2013-06-05 | 郑依福 | Multi-bar warp knitting machine running at normal temperature |
| CN204491157U (en) * | 2015-02-09 | 2015-07-22 | 福建省晋江市佶龙机械工业有限公司 | A kind of warp knitting machine lathe bed fully-automatic thermostatic control system |
| CN204474901U (en) * | 2015-02-16 | 2015-07-15 | 卡尔迈耶（中国）有限公司 | Warp knitting machine external oil way heater |
| CN104911806A (en) * | 2015-06-12 | 2015-09-16 | 福建省晋江市佶龙机械工业有限公司 | Thermostat used for looping area of warp knitting machine |
| CN205313803U (en) * | 2015-12-16 | 2016-06-15 | 江苏润源控股集团有限公司 | Oil tank and lopping main shaft constant temperature equipment of tricot machine |
| CN205295650U (en) * | 2016-01-11 | 2016-06-08 | 卡尔迈耶（中国）有限公司 | Double needle bar warp machine intercommunication formula circulating oil path device |
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