Minimum quantity lubrication system for computerized flat knitting machine

Abstract

The utility model discloses a minimal quantity lubrication system for a computerized flat knitting machine, which comprises an oil supply device, a control mechanism and a lubrication mechanism, the oil supply device comprises a container, and an oil-free alarm switch is arranged in the container; the lubricating mechanism comprises at least one lubricating nozzle, an oil outlet hole of the container is connected with an oil inlet hole of the lubricating mechanism, and at least one electromagnetic valve is mounted on a pipeline between the oil outlet hole of the container and the lubricating mechanism; the control mechanism comprises a time delay relay, a flat knitting machine controller and a flat knitting machine computer system; and the flat knitting machine computer system controls the on-off of the corresponding electromagnetic valves by respectively controlling the power-on and power-off of coils of the time delay relay. Thus, by controlling the oil quantity of the container, waste of lubricating oil is avoided, the situation that the fabric is stained due to excessive lubricating oil is avoided, multi-point uniform and quantity-adjustable lubrication can be achieved, it is guaranteed that all lubrication points of the computerized flat knitting machine are lubricated, and oil backflow is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile machinery lubrication technical field more specifically relates to a micro lubrication system for computer flat knitting machine. BACKGROUND

[0002] Computer flat knitting machine is a kind of high-precision, high-efficiency knitting equipment, and its normal operation cannot be separated from good lubrication system, and the purpose of lubrication is to reduce the friction between mechanical parts, reduce wear and tear, prolong the service life of equipment, ensure smooth and efficient operation, wherein, the common lubrication mode of computer flat knitting machine is as follows.

[0003] 1, manual lubrication is used, and lubricating oil or lubricating grease is added to lubrication points (such as guide rail, needle bed, transmission component, etc.) by artificial periodic, without complex lubrication system, low maintenance cost, but it depends on manual operation, and lubrication points are easy to be missed, and lubrication is easy to be uneven, which may cause local wear and tear.

[0004] 2, traditional self-gravity oil can is used for lubrication, and the self-gravity oil can relies on gravity to drip oil naturally, avoids the problem of missing lubrication points by artificial operation, but this lubrication mode cannot accurately control oil quantity, and is easy to cause local wear and tear due to insufficient lubrication or pollution of cloth surface due to excessive lubrication.

[0005] 3, traditional lubrication pump and pipeline system are used to cooperate to lubricate, and lubricating oil or lubricating grease can be periodically delivered to each lubrication point, but there is too much oil in single delivery, and the single oil quantity cannot be accurately controlled, so that stable and accurate micro, multiple points and uniform oil delivery cannot be realized.

[0006] Therefore, the present application is further researched on the basis, and the present case is generated. INVENTION CONTENTS

[0007] The utility model aims at providing a micro lubrication system that can multi-point accurate quantitative lubrication, and the lubrication is uniform and has no omission, and the structure is relatively simple, and the cost is relatively low.

[0008] To achieve the above object, the solution of the utility model is as follows:

[0009] A micro lubrication system for computer flat knitting machine, comprising an oil supply device, a control mechanism and a lubrication mechanism, the oil supply device comprises a container for storing lubricating oil, and an oil alarm switch is installed in the container;The lubrication mechanism comprises at least one lubrication nozzle, the oil outlet hole of the container is connected with the oil inlet hole of the lubrication mechanism, and at least one electromagnetic valve is installed on the pipeline between the oil outlet hole of the container and the lubrication mechanism;

[0010] The control mechanism comprises a flat knitting machine controller, a flat knitting machine computer system and at least one time-delay relay, each of the time-delay relays is provided with at least one electromagnetic valve, the coil of each of the time-delay relays is arranged in a power supply circuit of the flat knitting machine computer system, the positive bus and the negative bus of the power supply circuit are connected to the power supply end of the corresponding electromagnetic valve through the normally open contact of each of the time-delay relays respectively, so as to control the power-on and power-off of the coil of the time-delay relay to make the corresponding electromagnetic valve on and off; the collection end of the oil-free alarm switch is electrically connected to the signal input end of the flat knitting machine controller, so as to stop operation when the flat knitting machine controller collects the collection signal of the oil-free alarm switch.

[0011] The container is a self-gravity oil can; or the oil supply device further comprises a plunger oil pump installed in the container, and the power input end of the plunger oil pump is connected to the power output end of the flat knitting machine computer system.

[0012] The power supply circuit of the flat knitting machine computer system is provided with a positive bus and a negative bus, the first end of the coil of each of the time-delay relays is connected to the positive bus, and the second end of the coil of each of the time-delay relays is connected to the negative bus; wherein the first end of the normally open contact of each of the time-delay relays is connected to the positive bus, the second end of the normally open contact of each of the time-delay relays is connected to the power supply positive end of the corresponding electromagnetic valve, and the power supply negative end of each of the electromagnetic valves is connected to the negative bus respectively.

[0013] The electromagnetic valve is one, and the oil outlet hole of the container is connected to the lubricating mechanism through the electromagnetic valve.

[0014] The electromagnetic valve is one, the lubricating mechanism is at least two, the oil outlet hole of the container is connected to a multi-way joint through the electromagnetic valve, and each joint oil outlet hole of the multi-way joint is connected to the lubricating mechanism through a branch pipeline respectively.

[0015] The electromagnetic valve is multiple, the lubricating mechanism is at least two, the oil outlet hole of the container is provided with a multi-way joint, each joint oil outlet hole of the multi-way joint is connected to the corresponding lubricating mechanism through a branch pipeline respectively, and the front end of each branch pipeline is provided with the electromagnetic valve respectively.

[0016] The electromagnetic valve is multiple, the lubricating mechanism is at least two, the oil outlet hole of the container is connected to a multi-way joint through a connecting pipeline, each joint oil outlet hole of the multi-way joint is connected to a branch pipeline respectively, the oil outlet hole of each branch pipeline is connected to the corresponding lubricating mechanism respectively, and the electromagnetic valve is arranged at the middle position of each branch pipeline respectively.

[0017] The solenoid valves are multiple, and the oil outlet of the container is equipped with a multi-port connector. Each oil outlet of the multi-port connector is connected to the corresponding lubrication mechanism through a branch pipe, and the end of each branch pipe is equipped with a solenoid valve.

[0018] The time delay relay is equipped with all of the solenoid valves; or, there are at least two time delay relays, each of which is equipped with one of the solenoid valves or each of the time delay relays is equipped with at least two of the solenoid valves.

[0019] The signal output terminal of the flat knitting machine controller is electrically connected to the signal input terminal of the flat knitting machine computer system, and is used to control the start and stop of the flat knitting machine computer system.

[0020] By adopting the above structure, this utility model has the following beneficial effects:

[0021] 1. This utility model uses a solenoid valve to control the on / off state of one oil circuit, combined with a time delay relay to control the opening time of the solenoid valve, thereby controlling the amount of oil in the container of the oil supply device, realizing micro-lubrication of the lubrication points multiple times, so as to avoid the waste of lubricating oil and the fabric damage caused by excessive lubricating oil. At the same time, due to the setting of multiple lubrication nozzles, each lubrication nozzle can be directed at the lubrication points of the computerized flat knitting machine, thereby achieving multi-point uniform, timed and quantitative lubrication, ensuring that all lubrication points of the computerized flat knitting machine are lubricated.

[0022] 2. This utility model adopts an oil-free alarm switch installed in the container of the oil supply device. When there is no oil in the container, it outputs a collection signal to the flat knitting machine controller, so that the flat knitting machine controller can stop the computer flat knitting machine. This ensures that the guide rails, needle bed, transmission components and other parts in the computer flat knitting machine will not wear due to lack of lubrication, thereby improving the service life of the computer flat knitting machine. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the gravity-fed oil can in Example 1.

[0024] Figure 2 This is a schematic diagram of the first type of cooperation between the gravity-fed oil can and the lubrication mechanism in Example 1.

[0025] Figure 3 This is a schematic diagram of the second type of cooperation between the gravity oil reservoir and the lubrication mechanism in the gravity lubrication system of Embodiment 1.

[0026] Figure 4 This is a schematic diagram of the third type of cooperation between the gravity-fed oil can and the lubrication mechanism in Example 1.

[0027] Figure 5 This is a schematic diagram of the fourth type of cooperation between the gravity-fed oil can and the lubrication mechanism in Example 1.

[0028] Figure 6 This is a schematic diagram of the fifth type of connection between the gravity-fed oil can and the lubrication mechanism in Example 1.

[0029] Figure 7 This is a structural block diagram of Embodiment 1.

[0030] Figure 8 This is a schematic diagram of the power circuit of the computerized flat knitting machine in Example 1.

[0031] Figure 9 This is a schematic diagram of the micro-lubrication system assembled on a computerized flat knitting machine, as shown in Example 1.

[0032] Figure 10 This is a schematic diagram of the oil supply device in Example 2.

[0033] Figure 11 This is a schematic diagram of the oil supply device in Example 2.

[0034] In the picture:

[0035] 10a - Computerized flat knitting machine; 11a - Sliding seat;

[0036] 1- Gravity-fed oil can; 11- Oil can body; 111- Oil outlet; 12- Oil can cover; 13- Mounting rod; 2- No oil alarm switch; 31- Solenoid valve; 32- Lubrication nozzle; 4- Multi-port connector; 41- Branch pipeline; 42- Connecting pipeline; 5- Time delay relay; 6- Plunger oil pump; 7- Oil tank. Detailed Implementation

[0037] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0038] Example 1

[0039] A micro-lubrication system for computerized flat knitting machines, such as Figures 1-9 As shown, the micro-lubrication system includes an oil supply device, a control mechanism, and a lubrication mechanism. This utility model is applicable to the computerized flat knitting machine 10a commonly found on the market. The oil supply device in the micro-lubrication system can be fixedly installed in the corresponding part of the computerized flat knitting machine. For example, the oil supply device can be installed at a position near the lubrication point of the computerized flat knitting machine. Preferably, the oil supply device can be installed on the outer wall of the sliding seat 11a of the computerized flat knitting machine 10a to facilitate lubrication of each lubrication point. In addition, the installation position of the oil supply device can be arranged according to the actual situation and is not limited here.

[0040] For ease of description, the orientation of the oil supply device during use is taken as the reference direction for this utility model.

[0041] like Figure 1As shown, the above-mentioned oil supply device includes a container. In this embodiment, the container is a gravity oil can 1. Preferably, the gravity oil can 1 includes an oil can body 11 and an oil can lid 12. The oil can body 11 is arranged vertically, and an oil outlet is provided at the upper end of the oil can body 11. The oil can lid 12 is placed on the oil can body 11 to seal the oil outlet. The oil outlet is used to pour lubricating oil into the interior of the oil can body 11. An oil outlet hole 111 is provided at the lower end of the oil can body 11 to allow the lubricating oil inside the oil can body 11 to flow out. The oil can body 11 is provided with an oil-free alarm switch 2 inside, which is used to detect the amount of lubricating oil inside the gravity oil can 1.

[0042] like Figures 1-4 As shown, the above-mentioned lubrication mechanism includes at least one lubrication nozzle 32. The lubrication nozzle 32 is a commercially available lubrication nozzle. In this embodiment, the lubrication mechanism includes one lubrication nozzle 32 as an example. When there is one lubrication mechanism, a solenoid valve 31 is installed on the pipeline between the oil outlet 111 of the gravity oil reservoir 1 and the lubrication nozzle 32. When there are multiple lubrication mechanisms, a solenoid valve 31 is installed on the pipeline between the oil outlet 111 of the gravity oil reservoir 1 and each lubrication nozzle 32, or the pipeline between the oil outlet 111 of the gravity oil reservoir 1 and each lubrication nozzle 32 is controlled by the same solenoid valve 31. The lubrication nozzle 32 on each lubrication mechanism is directly opposite the lubrication point in the computerized flat knitting machine 10a. In this way, the amount of oil dripped from the lubrication nozzle 32 is controlled by the opening and closing of the solenoid valve 31.

[0043] Furthermore, there are various ways to arrange the solenoid valve on the pipeline between the oil outlet 111 of the gravity oil can 11 and the lubrication mechanism. The following is a detailed description of each arrangement.

[0044] The first arrangement method, such as Figure 2 As shown, there are multiple solenoid valves 31 and multiple lubrication mechanisms. Each solenoid valve 31 is installed at the oil outlet of the gravity oil reservoir 11. Specifically, the oil outlet of the gravity oil reservoir 11 is equipped with a multi-port connector 4. The multi-port connector 4 can be at least a three-way connector, that is, the multi-port connector includes a main oil inlet and at least two connector oil outlets. The oil outlet of the gravity oil reservoir 11 is connected to the main oil inlet. Each connector oil outlet is connected to the corresponding lubrication nozzle 32 through a branch pipe 41. The front end of each branch pipe 41 is equipped with the aforementioned solenoid valve 31 so that the opening and closing of the corresponding lubrication nozzle 32 can be controlled by the opening and closing of each solenoid valve 31.

[0045] The second arrangement method, such as Figure 3As shown, there are multiple solenoid valves 31. When there are multiple lubrication mechanisms, each solenoid valve 31 is installed in the middle position of the entire delivery pipeline. Specifically, the oil outlet of the gravity oil reservoir 11 is connected to a multi-port connector 4 through a connecting pipeline 42. The multi-port connector 4 can be a connector with at least three ports, that is, the multi-port connector includes a main oil inlet and at least two connector oil outlets. That is, the oil outlet of the gravity oil reservoir 11 is connected to the main oil inlet of the multi-port connector 4 through the connecting pipeline 42. Each connector oil outlet is connected to a branch pipeline 41, and the oil outlet of each branch pipeline 41 is connected to the corresponding lubrication nozzle 32. The aforementioned solenoid valve 31 is installed in the middle position of each branch pipeline 41.

[0046] The third arrangement method, such as Figure 4 As shown, each solenoid valve 31 is installed near the lubrication point. In detail, the current arrangement is the same as the first arrangement, except that each solenoid valve 31 is installed at the end of the corresponding branch pipe 41 (i.e., near the lubrication nozzle 32). The direction of lubricating oil delivery is from the front end to the end, where the end refers to the very end of the lubricating oil delivery direction.

[0047] The fourth arrangement method, such as Figure 5 As shown, there is one solenoid valve 31. When there are multiple lubrication mechanisms, the solenoid valve 31 is installed at the oil outlet of the gravity oil reservoir 11. Specifically, the oil outlet of the gravity oil reservoir 11 is connected to a connecting pipe 42. The oil outlet of the connecting pipe 42 is equipped with a multi-port connector 4. The multi-port connector 4 can be at least a three-way connector, that is, the multi-port connector includes a main oil inlet and at least two connector oil outlets. The oil outlet of the gravity oil reservoir 11 is connected to the main oil inlet. Each connector oil outlet is connected to the corresponding lubrication nozzle 32 through a branch pipe 41. The aforementioned solenoid valve 31 is installed on the connecting pipe 42 so that the opening and closing of each lubrication nozzle 32 can be controlled by the opening and closing of the solenoid valve 31.

[0048] In the fifth arrangement, when there is one solenoid valve 31 and one lubrication mechanism, the solenoid valve 31 is installed on the pipeline between the oil outlet of the gravity oil can 11 and the lubrication nozzle 32. The solenoid valve 31 can be located at any position on the pipeline.

[0049] In this embodiment, the above-mentioned arrangement structure is specifically selected based on the actual situation such as the installation position of the gravity oil can 11 and the position of the lubrication point in the computer flat knitting machine 10a, so as to arrange the lubrication mechanism in the computer flat knitting machine 10a in the most economical way, thereby reducing costs and ensuring the compactness of the structure.

[0050] As a preferred embodiment, the multi-port connector 4 can be a connector with 2-8 oil outlet holes, and the multi-port connector 4 can be in the shape of a straight line or a ring. Preferably, the multi-port connector 4 is in the shape of a straight line, and such multi-port connector 4 can be purchased directly on the market. Preferably, the multi-port connector 4 is a 5-port connector, that is, it has four oil outlet holes, and the four lubrication nozzles 32 correspond to the needle bed of the computer flat knitting machine, the guide rails on both sides and the knitting needles respectively.

[0051] Furthermore, the lubrication nozzles 32 in the aforementioned lubrication mechanisms are all commercially available oil nozzles.

[0052] To elaborate further, such as Figure 1 As shown and as Figure 5 As shown, the above-mentioned oil-free alarm switch 2 can be a float switch, a photoelectric sensor, or a level gauge. Preferably, the oil-free alarm switch 2 is a float switch, which can be purchased directly from the market. When the oil-free alarm switch 2 is a float switch, the installation structure of the oil-free alarm switch 2 is as follows: a mounting rod 13 is connected to the middle position of the oil can cover 12. The mounting rod 13 extends into the oil can body 11, and when the oil can cover 12 is placed on the oil can body 11, the end of the mounting rod 13 is close to the bottom surface of the oil can body 11. The oil-free alarm switch 2 is sleeved on the mounting rod 13, and two limiting pieces are integrally connected to the mounting rod 13. The two limiting pieces are arranged sequentially along the axial direction of the mounting rod 13, and the two limiting pieces together form an area that restricts the movement of the oil-free alarm switch 2. In this way, when the gravity oil reservoir 1 is full of lubricating oil, the oil-free alarm switch 2 floats to the left and right of the lubricating oil and abuts against the upper limit plate; when the lubricating oil in the gravity oil reservoir 1 is used up or almost used up, the oil-free alarm switch 2 falls under the action of gravity and abuts against the lower limit plate, thereby realizing the signal acquisition of the oil-free alarm switch 2.

[0053] Furthermore, the aforementioned control mechanism includes a flat knitting machine controller and a flat knitting machine computer system. The acquisition terminal of the oil-free alarm switch 2 is electrically connected to the signal input terminal of the flat knitting machine controller to transmit the acquired signal to the flat knitting machine controller. The flat knitting machine controller can then know that there is no lubricating oil in the gravity oil reservoir 1 by acquiring the acquired signal. The signal output terminal of the flat knitting machine controller is electrically connected to the signal input terminal of the flat knitting machine computer system to control the flat knitting machine computer system to stop, thereby stopping the computerized flat knitting machine so that the operator can replenish the lubricating oil in time. At the same time, it ensures that the lubrication points (such as the guide rails, needle bed, transmission components, etc. in the computerized flat knitting machine) are always lubricated with lubricating oil to ensure the service life of the computerized flat knitting machine.

[0054] It should be noted that the above-mentioned flat knitting machine controller and flat knitting machine computer system are the control parts in existing conventional computerized flat knitting machines. This embodiment only connects the corresponding parts to the conventional flat knitting machine controller or flat knitting machine computer system, without making any improvements to the flat knitting machine controller and flat knitting machine computer system. Therefore, the two control parts will not be described in detail.

[0055] To elaborate further, such as Figures 6-7 As shown, the control mechanism described above also includes at least one time delay relay 5, and each time delay relay 5 is equipped with at least one solenoid valve to control the on / off state of the solenoid valve 31 through the time delay relay 5 to achieve intermittent quantitative lubrication; in this embodiment, the configuration of the time delay relay 5 is as follows.

[0056] In this embodiment, if there is only one solenoid valve, then there is one time delay relay 5.

[0057] If there are multiple solenoid valves, there can be one or at least two time delay relays 5. When there is one time delay relay 5, all solenoid valves are controlled by the time delay relay 5. When there are at least two time delay relays 5, each time delay relay 5 can be assigned the same or different number of solenoid valves 5 according to the actual situation. For example, if there are 5 solenoid valves, there are two time delay relays 5. One time delay relay 5 controls two solenoid valves, and the other time delay relay 5 controls three solenoid valves.

[0058] Furthermore, in this embodiment, the control mechanism is described using multiple time-delay relays 5 as an example, and each time-delay relay 5 is equipped with a solenoid valve. The coil of each time-delay relay 5 is respectively located in the power circuit of the flat knitting machine computer system, so as to control the on and off of each time-delay relay 5 through the flat knitting machine computer system. The power circuit of the flat knitting machine computer system is connected to the power terminal of the corresponding solenoid valve 31 through the normally open contact of each time-delay relay 5, so as to control the gain and loss points of the coil of the time-delay relay 5 to make the corresponding solenoid valve 31 open and close.

[0059] Accordingly, such as Figure 7 As shown, the control circuit between the power supply circuit of the above-mentioned flat knitting machine computer system and each time delay relay 5 and solenoid valve 31 is as follows: The power supply circuit of the flat knitting machine computer system is provided with a positive bus and a negative bus. The first end of the coil of each time delay relay 5 is electrically connected to the positive bus, and the second end of the coil of each time delay relay 5 is connected to the negative bus. The first end of the normally open contact of each time delay relay 5 is connected to the positive bus, and the second end of the normally open contact of each time delay relay 5 is connected to the positive power supply terminal of the corresponding solenoid valve 31. The negative power supply terminal of each solenoid valve 31 is electrically connected to the negative bus.

[0060] In this way, the flat knitting machine computer system is preset to energize the coil of the time-delay relay for 22 seconds every 10 minutes. The time-delay relay can be manually set to energize its contacts for 0.5 seconds every 5 seconds when energized. That is, when the time-delay relay is energized, the solenoid valve opens for 0.5 seconds, opening the pipeline corresponding to the solenoid valve 31, allowing the lubricating oil in the gravity oil reservoir 11 to drip from the lubrication nozzle 32 through the solenoid valve 31. After 0.5 seconds, the solenoid valve 31 closes for 5 seconds, then opens for 0.5 seconds, then closes for 5 seconds, and so on, until the coil of the time-delay relay accumulates 22 seconds. Then the time-delay relay is de-energized, and the solenoid valve no longer opens. After a 10-minute interval, the flat knitting machine motor system controls the coil of the time-delay relay to be energized again, repeating the above steps to achieve intermittent quantitative and fixed-point lubrication. In addition, the flat knitting machine computer system can control the opening and closing of the corresponding solenoid valve 31 by controlling each time-delay relay 5 separately, so as to independently control the lubrication of different lubrication points and achieve precise lubrication.

[0061] Furthermore, all of the above-mentioned solenoid valves 31 are normally closed solenoid valves, which can be purchased directly from the market; the above-mentioned time delay relay 5 can also be purchased directly from the market.

[0062] This embodiment describes a micro-lubrication system for computerized flat knitting machines. It employs a solenoid valve installed on each branch pipeline. The on / off state of the solenoid valve is controlled by a corresponding time-delay relay, allowing for precise lubrication of the corresponding lubrication points. Furthermore, since the time-delay relay controls the opening and closing time of the solenoid valve 31, the lubrication time, intervals, and amount of lubricating oil replenished at each lubrication point are determined. This achieves timed, quantitative, and multi-point lubrication with high control precision and low cost.

[0063] Example 2

[0064] like Figures 2-11 As shown, the difference between this embodiment and Embodiment 1 lies in the oil supply device. In this embodiment, the oil supply device uses a plunger oil pump to achieve oil supply.

[0065] Specifically, the aforementioned oil supply device includes a container and a plunger oil pump 6. In this embodiment, the container can be an oil tank 7, and the oil outlet of the oil tank 7 is located on the upper side of the oil tank 7. The plunger oil pump 6 is fixedly installed inside the oil tank 7. The plunger oil pump 6 can be a commercially available plunger oil pump, or a lubrication pump commonly used for lubrication in computerized flat knitting machines. The oil outlet of the plunger oil pump 6 is connected to the oil outlet of the oil tank 7 through an oil pipe 71. That is, the first end of the oil pipe 71 is connected to the oil outlet of the plunger oil pump 6, the second end of the oil pipe 71 is connected to the oil outlet of the oil tank 7, and the second end of the oil pipe 71 extends out of the oil outlet of the oil tank 7.

[0066] Furthermore, there are various ways to arrange the solenoid valve between the oil outlet 111 of the container and the lubrication mechanism. That is, there are various ways to arrange the solenoid valve 31 on the pipeline between the second end of the oil pipe 71 and the lubrication mechanism. All of them are the same as those described in Embodiment 1, so they will not be described in detail here.

[0067] Furthermore, the power output terminal of the aforementioned flat knitting machine computer system is electrically connected to the power supply terminal of the plunger oil pump 6 in the power supply device to control the opening and closing of the plunger oil pump 6, thereby controlling the oil pressure or suction to control the oil injection of the lubrication mechanism.

[0068] Furthermore, the aforementioned oil-free alarm switch 2 can be a conventional liquid level gauge, whose probe extends into the oil tank 7 and is close to the bottom of the oil tank 7, and the liquid level gauge is fixedly installed on the oil tank.

[0069] As a preferred embodiment, the aforementioned oil supply device is installed on the frame of a conventional computerized flat knitting machine.

[0070] This embodiment discloses a micro-lubrication system for a computerized flat knitting machine. The oil supply device uses a plunger oil pump for oil supply, and a solenoid valve is installed on each branch pipeline. The opening and closing of the solenoid valve is controlled by a corresponding time delay relay, which can accurately lubricate the corresponding lubrication points. At the same time, since the time delay relay controls the opening and closing time of the solenoid valve 31, the lubrication time, the interval time, and the amount of lubricating oil replenished for each lubrication point can be determined, thereby achieving timed, quantitative, and multi-point lubrication with high control accuracy and low cost. Moreover, due to the cooperation between the time delay relay and the corresponding solenoid valve, the lubricating oil is not prone to backflow when the piston rod in the plunger oil pump rebounds after oil supply.

[0071] The above description is only a preferred embodiment of this invention. All equivalent changes and modifications made within the scope of the claims of this utility model shall fall within the scope of the claims of this utility model.

Claims

1. A micro-lubrication system for a computerized flat knitting machine, characterized in that: The lubricating device comprises an oil supply device, a control mechanism and a lubricating mechanism, the oil supply device comprises a container for storing lubricating oil, and an oil shortage alarm switch is installed in the container; the lubricating mechanism comprises at least one lubricating nozzle, an oil outlet hole of the container is connected to an oil inlet hole of the lubricating mechanism, and at least one electromagnetic valve is installed on a pipeline between the oil outlet hole of the container and the lubricating mechanism; The control mechanism comprises a flat knitting machine controller, a flat knitting machine computer system and at least one time delay relay, each of the time delay relays is provided with at least one electromagnetic valve, a coil of each of the time delay relays is arranged in a power supply circuit of the flat knitting machine computer system, positive and negative bus bars of the power supply circuit are connected to power supply ends of the corresponding electromagnetic valves through normally open contacts of each of the time delay relays, respectively, so as to control the power-on and power-off of the coils of the time delay relays to make the corresponding electromagnetic valves on and off; and a collection end of the oil shortage alarm switch is electrically connected to a signal input end of the flat knitting machine controller, so as to perform a shutdown operation when the flat knitting machine controller collects a collection signal of the oil shortage alarm switch.

2. A micro-lubrication system for a computerised flat knitting machine according to claim 1, characterised in that: The container is a self-gravity oil canister; or the oil supply device further comprises a plunger oil pump installed in the container, and a power input end of the plunger oil pump is connected to a power output end of the flat knitting machine computer system.

3. A micro-lubrication system for a computerised flat knitting machine according to claim 1, characterised in that: The power supply circuit of the flat knitting machine computer system is provided with positive and negative bus bars, a first end of the coil of each of the time delay relays is connected to the positive bus bar, and a second end of the coil of each of the time delay relays is connected to the negative bus bar; wherein a first end of the normally open contact of each of the time delay relays is connected to the positive bus bar, a second end of the normally open contact of each of the time delay relays is connected to a power supply positive end of the corresponding electromagnetic valve, and a power supply negative end of each of the electromagnetic valves is connected to the negative bus bar, respectively.

4. A micro-lubrication system for a computerised flat knitting machine according to claim 3, characterised in that: The electromagnetic valve is one, and the oil outlet hole of the container is connected to the lubricating mechanism through the electromagnetic valve.

5. A micro-lubrication system for a computerised flat knitting machine according to claim 3, characterised in that: The electromagnetic valve is one, the lubricating mechanism comprises at least two, the oil outlet hole of the container is connected to a multi-way joint through the electromagnetic valve, and each joint oil outlet hole of the multi-way joint is connected to the lubricating mechanism through a branch pipeline.

6. A micro-lubrication system for a computerised flat knitting machine according to claim 3, characterised in that: The electromagnetic valve is multiple, the lubricating mechanism comprises at least two, the oil outlet hole of the container is provided with a multi-way joint, each joint oil outlet hole of the multi-way joint is connected to the corresponding lubricating mechanism through a branch pipeline, and a front end of each branch pipeline is provided with the electromagnetic valve, respectively.

7. A micro-lubrication system for a computerised flat knitting machine according to claim 3, characterised in that: The electromagnetic valve is multiple, the lubricating mechanism comprises at least two, the oil outlet hole of the container is connected to a multi-way joint through a connecting pipeline, each joint oil outlet hole of the multi-way joint is connected to a branch pipeline, respectively, each branch pipeline is connected to the corresponding lubricating mechanism, and the electromagnetic valve is installed at a middle position of each branch pipeline, respectively.

8. A micro-lubrication system for a computerised flat knitting machine according to claim 3, characterised in that: The electromagnetic valve is multiple, the oil outlet hole of the container is provided with a multi-way joint, each joint oil outlet hole of the multi-way joint is connected to the corresponding lubricating mechanism through a branch pipeline, and a tail end of each branch pipeline is provided with the electromagnetic valve, respectively.

9. A micro-lubrication system for a computerised flat knitting machine according to any one of claims 6, 7 or 8, characterised in that: The time-delay relay is provided with all the electromagnetic valves; or, the time-delay relay has at least two, each of the time-delay relays is provided with one electromagnetic valve or each of the time-delay relays is provided with at least two electromagnetic valves.

10. A micro-lubrication system for a computerized flat knitting machine according to claim 1, characterized in that: The signal output end of the flat knitting machine controller is electrically connected with the signal input end of the flat knitting machine computer system, so as to control the opening and closing of the flat knitting machine computer system.

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