Lubricating oil supply control method and device for punching machine and computer readable storage medium

Abstract

The invention discloses a lubricating oil supply control method and device for a punching machine and a computer readable storage medium, the punching machine adopts an electric oil injector to supply lubricating oil, the electric oil injector is provided with a distribution valve, and the distribution valve executes oil supply detection once every one stroke; the method comprises the steps that after the punch press is started, the accumulated punching frequency of the punch press is recorded; and every time the accumulated punching times of the punching machine reach integral multiples of the first target times, the electric oil injector is controlled to supply lubricating oil, and the electric oil injector is controlled to stop supplying the lubricating oil after it is detected that the electric oil injector triggers oil supply detection of the second target times. The lubricating oil supply mode of an existing punching machine is changed, punching timing is changed into punching counting, the existing on-off lubricating function is omitted, the lubricating oil supply mode better fits the actual use of the punching machine, the accuracy of the oil supply time is improved, the bad problem that lubricating oil drips on a product due to excessive supply can be solved, and the production efficiency is improved. And the product yield is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of punching machines, and in particular to a lubricating oil supply control method and device for a punching machine, and a computer-readable storage medium. Background Art

[0002] Punching machine, also known as stamping press machine. In national production, the stamping process has the advantages of saving materials and energy, high efficiency, low technical requirements for operators, and the ability to make products that cannot be achieved by mechanical processing through various mold applications. Therefore, its use is becoming more and more extensive. Stamping production is mainly for sheet metal. Through molds, it can make blanking, punching, forming, drawing, trimming, fine blanking, shaping, riveting and extrusion parts, etc., and is widely used in various fields. The punching machine generally uses an electric oiler for oil supply and is equipped with a distribution valve. The distribution valve controls the balanced supply of 12 oil circuits. The distribution valve triggers an oil supply test once every stroke (about 12 seconds).

[0003] In the actual application of existing punching machines, it is often found that the products produced by the punching machines have serious oil residues, resulting in poor quality. After research and analysis, it was found that there was too much oil accumulation in the oil collecting box of the punching machine, resulting in overflow, and falling onto the robot arm, causing the arm to directly contact the product during the process of grabbing the product, resulting in batch oil pollution of the product.

[0004] Figures 1-2 This is a partial control program diagram of an existing punch press: when the punch press is detected in motion (Y12), it counts once every 100 milliseconds (M1012), 600 times is a cycle (C0), the oil pump starts to supply oil once every 90 cycles (i.e. 90 minutes) (C2), the continuous oil supply time is 100 seconds (T1), and the oil supply is checked once within 60 seconds (X16) to see if it is normal. Among them, the punch press performs 100 seconds of oil supply and lubrication every time it is turned on and off (the oil injection flow rate of an electric oiler of model SK-505 is 50ml / min, which controls the supply of 12 oil circuits. 100s of lubrication injects about 83.3ml of lubricating oil, an average of 7ml per oil circuit). It will also check whether the oil supply is normal within 60 seconds; the punch press's action process lasts about 1.71 seconds, the corresponding program count is 17 times, and the lubrication interval is about 3176 punch presses (600*90 / 17) to perform one oil supply. When the equipment's operating speed changes, such as slowing down, it will lead to fewer punch presses and more oil supply. In addition, injecting more lubricating oil at one time will also cause the lubricating oil to overflow easily at the beginning of injection. It can be seen that the existing punch press has low controllability of the oil supply, which is easy to cause excessive butter supply and overflow, resulting in poor oil pollution of the product and affecting the product defect rate. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a lubricating oil supply control method and device for a punch press, and a computer-readable storage medium, which can reduce the problem of excessive lubricating oil supply dripping on the product and improve the product yield.

[0006] In order to solve the above technical problems, the first aspect of the present invention discloses a lubricating oil supply control method for a punch press, wherein the punch press uses an electric lubricator to supply lubricating oil, and the electric lubricator is equipped with a distribution valve, which is used to control the balanced supply of multiple output oil circuits of the electric lubricator, and the distribution valve performs an oil supply detection once per stroke; the method comprises:

[0007] After the punch press is started, recording the cumulative number of punching times of the punch press;

[0008] Whenever the cumulative punching times of the punch press reach an integer multiple of the first target times, the electric lubricator is controlled to supply lubricating oil, and after detecting that the electric lubricator triggers the oil supply detection of the second target times, the electric lubricator is controlled to stop supplying lubricating oil.

[0009] As an optional implementation, the first target number of times is 400 to 1000 times.

[0010] As another optional implementation, the second target number of times is 1 to 3 times.

[0011] As another optional implementation, after controlling the electric oiler to supply lubricating oil, the method further includes:

[0012] Start recording the time when the electric lubricator triggers the oil supply detection, and determine whether the electric lubricator is detected to perform the oil supply detection within a target time after the start of recording;

[0013] If it is determined that the electric lubricator is not detected to perform oil supply detection within the target time after the start of recording, an oil supply alarm is triggered and the electric lubricator is controlled to stop supplying lubricating oil.

[0014] As another optional implementation, when the second target number is at least 2 times; after controlling the electric oiler to supply lubricating oil, the method further includes:

[0015] After recording that the electric lubricator triggers an oil supply detection, determining whether the electric lubricator triggers the next oil supply detection within a target time period;

[0016] If it is determined that the electric lubricator is not detected to trigger the next oil supply detection within the target time, an oil supply alarm is triggered and the electric lubricator is controlled to stop supplying lubricating oil.

[0017] As another optional implementation, the target duration is greater than the time required for the distributing valve to perform one stroke, and less than the time required for the distributing valve to perform two strokes.

[0018] The second aspect of the present invention discloses a lubricating oil supply control device for a punch press, comprising a memory, a processor and a computer program stored in the memory, wherein the processor executes the computer program to implement the steps in the method disclosed in the first aspect of the present invention.

[0019] A third aspect of the present invention discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the method disclosed in the first aspect of the present invention.

[0020] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0021] Compared with the prior art, the embodiment of the present invention changes the lubricating oil supply method of the existing punch press from punching timing to punching times, and also cancels the existing on-off lubrication function, so that the lubricating oil supply method is more in line with the actual use of the punch press, improves the accuracy of the oil supply timing, reduces the defective problem of excessive lubricating oil dripping on the product, and improves the product yield; the lubricating oil supplied for the same number of punching times should be consistent. This embodiment uses the oil supply detection of the electric oiler to stop the supply after a fixed number of supply detections, which can ensure that the oil supply amount is consistent each time. In addition, since the distribution valve is used to control the balanced supply of multiple output oil circuits of the electric oiler, the distribution valve performs an oil supply detection every time it performs one stroke. Stopping after the supply detection can also ensure that the lubricating oil supply of multiple oil circuits of the punch press is balanced, so as to ensure the stable operation of the punch press. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a partial control program diagram of an existing punching machine disclosed in an embodiment of the present invention;

[0024] Figure 2 It is another part of the control program diagram of an existing punching machine disclosed in an embodiment of the present invention;

[0025] Figure 3 It is a flow chart of a lubricating oil supply control method for a punch press disclosed in an embodiment of the present invention;

[0026] Figure 4 It is a partial control program diagram of a lubricating oil supply control method for a punch press disclosed in an embodiment of the present invention;

[0027] Figure 5 The invention is a schematic structural diagram of a lubricating oil supply control device for a punch press disclosed in an embodiment of the invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] See also Figure 3 The embodiment of the present invention discloses a lubricating oil supply control method for a punch press, wherein the punch press uses an electric lubricator to supply lubricating oil, and the electric lubricator is provided with a distribution valve, which is used to control the balanced supply of multiple output oil circuits of the electric lubricator, and the distribution valve performs an oil supply detection once every stroke; the method comprises:

[0031] 101. After the punch press is started, the cumulative number of punching times of the punch press is recorded.

[0032] 102. Whenever the cumulative number of punching times of the punch press reaches an integer multiple of a first target number, the electric lubricator is controlled to supply lubricating oil, and after detecting that the electric lubricator triggers an oil supply detection of a second target number, the electric lubricator is controlled to stop supplying lubricating oil.

[0033] The distribution valve is also called a multi-way reversing valve. It is used to control the flow direction of hydraulic oil in the hydraulic system. Its working principle is based on the position change of the valve core, which directs the hydraulic oil flow to different fluid paths to achieve balanced supply of multiple output oil paths of the electric oil injector. When the distribution valve performs one stroke, that is, the valve core completes one stroke, the multiple output oil paths of the electric oil injector are injected with the same volume of lubricating oil in sequence. The distribution valve performs an oil supply test every time it performs one stroke, and sends out a corresponding command signal. When the distribution valve does not send out a command signal for a long time, it means that there may be a problem with the distribution valve in this stroke, such as oil blockage.

[0034] For example, an electric lubricator of model SK-505 is used, the oil flow rate is 50ml / min, and the distribution valve controls the balanced supply of 12 oil circuits. One stroke is about 12 seconds, that is, the total oil injection in one stroke is about 10ml. Assuming that the first target number is 600 and the second target number is 2 times, that is, after the punch press is turned on, oil injection is performed once every 600 punches, and each time the oil is injected, the distribution valve of the electric lubricator continues for 2 strokes and then stops the oil injection, which corresponds to the electric lubricator outputting two oil supply detection command signals during this period; in this example, each oil circuit is injected with 1.7ml of lubricating oil every 600 punches (about 17 minutes). Figures 1-2 The prior art shown, in addition to the 100-second lubrication oil supply when the machine is turned on, has a lubrication interval time (90 minutes) of about 3176 punches to perform a 100-second lubrication oil supply (in the case of the same model of electric oiler, 100 seconds of lubrication injects approximately 83.3 ml of lubricating oil, an average of 7 ml per oil circuit), which is equivalent to injecting 1.3 ml of lubricating oil when each oil circuit is punched 600 times, which is smaller than the average injection amount of this example, but the actual oil leakage is much more serious than this example. The problem is that more lubricating oil is injected at one time and the lubrication interval is too long, while the actual oil leakage in this example has been greatly improved.

[0035] The embodiment of the present invention changes the existing lubricating oil supply method of the punch press from punching timing to punching times, and also cancels the existing on-off lubrication function, so that the lubricating oil supply method is more in line with the actual use of the punch press, improves the accuracy of the oil supply timing, reduces the defective problem of excessive lubricating oil dripping on the product, and improves the product yield; in addition, the lubricating oil supplied for the same number of punching times should be consistent. This embodiment uses the oil supply detection of the electric oiler to stop the supply after a fixed number of supply detections, which can ensure that the oil supply amount is consistent each time. Moreover, since the distribution valve is used to control the balanced supply of multiple output oil circuits of the electric oiler, the distribution valve performs an oil supply detection every time it performs one stroke. Stopping after the supply detection can also ensure that the lubricating oil supply of multiple oil circuits of the punch press is balanced, so as to ensure the stable operation of the punch press.

[0036] In an optional embodiment, the first target number of times is 400 to 1000 times. It is possible to avoid excessive energy consumption of the electric oiler due to excessive oiling time intervals, and to avoid excessive oiling at one time due to excessive intervals.

[0037] In another optional embodiment, the second target number is 1 to 3. The relationship between the first target number and the second target number is such that each oil passage of the punch press is injected with 1 to 2 ml of lubricating oil every 500 to 700 punches.

[0038] In yet another optional embodiment, after controlling the electric oiler to supply lubricating oil, the method further includes:

[0039] Start recording the time when the electric lubricator triggers the oil supply detection, and determine whether the electric lubricator is detected to perform the oil supply detection within a target time after the start of recording;

[0040] If it is determined that the electric lubricator is not detected to perform oil supply detection within the target time after the start of recording, an oil supply alarm is triggered and the electric lubricator is controlled to stop supplying lubricating oil.

[0041] In this embodiment, usually each stroke (about 12 seconds) of the distribution valve triggers an oil supply detection. If the normal time is exceeded, it indicates that there is a problem with the oil supply, and the oil supply needs to be stopped and checked.

[0042] In yet another optional embodiment, when the second target number is at least 2 times; after controlling the electric oiler to supply lubricating oil, the method further includes:

[0043] After recording that the electric lubricator triggers an oil supply detection, determining whether the electric lubricator triggers the next oil supply detection within a target time period;

[0044] If it is determined that the electric lubricator is not detected to trigger the next oil supply detection within the target time, an oil supply alarm is triggered and the electric lubricator is controlled to stop supplying lubricating oil.

[0045] In yet another optional embodiment, the target duration is greater than the time required for the dispensing valve to perform one stroke, and less than the time required for the dispensing valve to perform two strokes.

[0046] For example, the punch oil supply control logic of this embodiment is shown in Figure 4 Among them, compared with Figures 1-2 The existing punch press oil supply control logic shown in the figure cancels the equipment startup lubrication program and changes the equipment operation detection mode, that is, changes from timing to counting. The punch press performs a counting detection (X12) every time it punches. When the number of punches reaches 600 times (C112), oil supply is carried out. After the oil supply detection (X16) is carried out twice, the oil supply is stopped. If the oil supply detection (X16) is not carried out within the specified time (T50, T51), that is, within 18 seconds, the equipment will trigger the butter oil supply alarm.

[0047] Embodiment 2

[0048] See also Figure 5 , Figure 5 It is a structural schematic diagram of a lubricating oil supply control device for a punch press disclosed in an embodiment of the present invention, including a memory 201, a processor 202 and a computer program stored in the memory, and the processor executes the computer program to implement the steps in the method disclosed in Example 1.

[0049] Embodiment 3

[0050] An embodiment of the present invention discloses a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps in the method disclosed in the first embodiment are implemented.

[0051] The contents disclosed in the embodiments of the present invention only disclose the preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lubricating oil supply control method for a punch press, wherein the punch press uses an electric lubricator to supply lubricating oil, and the electric lubricator is equipped with a distribution valve, which is used to control the balanced supply of multiple output oil circuits of the electric lubricator, and the distribution valve performs an oil supply detection every time the distribution valve performs a stroke; characterized in that: The method comprises: After the punch press is started, recording the cumulative number of punching times of the punch press; Whenever the cumulative punching times of the punch press reach an integer multiple of the first target times, the electric lubricator is controlled to supply lubricating oil, and after detecting that the electric lubricator triggers the oil supply detection of the second target times, the electric lubricator is controlled to stop supplying lubricating oil.

2. The lubricating oil supply control method according to claim 1, characterized in that: The first target number of times is 400 to 1000 times.

3. The lubricating oil supply control method according to claim 1, characterized in that: The second target number of times is 1 to 3 times.

4. The lubricating oil supply control method according to claim 1, characterized in that: After controlling the electric oiler to supply lubricating oil, the method further includes: Start recording the time when the electric lubricator triggers the oil supply detection, and determine whether the electric lubricator is detected to perform the oil supply detection within a target time after the start of recording; If it is determined that the electric lubricator is not detected to perform oil supply detection within the target time after the start of recording, an oil supply alarm is triggered and the electric lubricator is controlled to stop supplying lubricating oil.

5. The lubricating oil supply control method according to claim 4, characterized in that: When the second target number is at least 2 times; after controlling the electric oiler to supply lubricating oil, the method further includes: After recording that the electric lubricator triggers an oil supply detection, determining whether the electric lubricator triggers the next oil supply detection within a target time period; If it is determined that the electric lubricator is not detected to trigger the next oil supply detection within the target time, an oil supply alarm is triggered and the electric lubricator is controlled to stop supplying lubricating oil.

6. The lubricating oil supply control method according to claim 4 or 5, characterized in that: The target time length is greater than the time required for the distributing valve to perform one stroke, and less than the time required for the distributing valve to perform two strokes.

7. A lubricating oil supply control device for a punch press, comprising a memory, a processor and a computer program stored in the memory, characterized in that: The processor executes the computer program to implement the steps of the method according to any one of claims 1 to 6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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