U-shaped copper strip flattening device and electric control system

Abstract

The utility model discloses a U-shaped copper strip flattening device and an electric control system. The U-shaped copper strip flattening device comprises a pressing device, a centering device, a flattening machine body, a meter counting device and a hydraulic system, the material pressing device comprises a material pressing ascending and descending oil cylinder; the centering device comprises a centering clamping and loosening oil cylinder; the flattening machine body comprises a flattening ascending and descending oil cylinder and a flattening loosening and clamping oil cylinder; the meter counting device comprises a tray ascending and descending oil cylinder. Wherein an oil transportation main pipeline and an oil return main pipeline are arranged in the bottom plate block; wherein an electromagnetic relief valve is connected between the oil transportation main pipeline and the oil return main pipeline; and an unloading overflow valve is also connected between the oil transportation main pipeline and the oil return main pipeline. A PLC control system and a full touch screen structure are adopted, different control modes of the flattening machine are achieved through opening and closing control over the motor pump set and the electromagnetic valve and a PLC internal algorithm, the circuit structure is simple, and the intelligent control degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent electric control, in particular to a U-shaped copper strip flattening device and an electric control system. Background Technique

[0002] Compared with conventional ordinary copper strips, the production of U-shaped copper strips can greatly reduce the required energy consumption. However, the U-shaped copper strips need to be unfolded and flattened before being wound on a coiling machine. The existing electric control system of the copper strip flattening device cannot match the speed of the continuous extruder. Therefore, how to provide a copper strip flattening device and an electric control system is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0003] The purpose of the utility model is to provide a U-shaped copper strip flattening device and an electric control system to solve the technical problems mentioned in the background technique.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a U-shaped copper strip flattening device, which includes a material pressing device, a centering device, a flattening machine body, a length measuring device, and a hydraulic system;

[0006] The material pressing device includes a material pressing up-and-down oil cylinder; the centering device includes a centering clamping and releasing oil cylinder; the flattening machine body includes a flattening up-and-down oil cylinder and a flattening releasing and clamping oil cylinder; the length measuring device includes a tray up-and-down oil cylinder;

[0007] Wherein, roller devices are respectively arranged on the centering device and the length measuring device;

[0008] A trolley motor is arranged on the flattening machine body.

[0009] Further, the hydraulic system includes an oil tank, an oil pipeline arranged in the bottom plate and used for connecting the material pressing up-and-down oil cylinder, the centering clamping and releasing oil cylinder, the flattening up-and-down oil cylinder, the flattening releasing and clamping oil cylinder, and the tray up-and-down oil cylinder, and two groups of oil pumps for providing hydraulic power for the oil pipeline;

[0010] Wherein, an oil main pipeline and a return oil main pipeline are arranged in the bottom plate; an electromagnetic overflow valve is connected between the oil main pipeline and the return oil main pipeline; a unloading overflow valve is also connected between the oil main pipeline and the return oil main pipeline; the return oil main pipeline is connected to the oil tank through a return oil pipeline, and a return oil filter and a water cooler are arranged on the return oil pipeline;

[0011] Wherein, an oil level gauge is arranged in the oil tank, and a return oil filter is also arranged thereon;

[0012] Two sets of mutually backup oil pumps are provided on the fuel tank;

[0013] One set of oil pumps includes two oil pumps connected to the fuel tank in parallel, and one-way valves are respectively arranged on their respective oil outlet lines; this set of oil pumps is connected to the main oil pipeline through the oil outlet line;

[0014] The other set of oil pumps includes two oil pumps connected to the fuel tank in parallel, and ball valves are respectively arranged on the two oil outlet lines; this set of oil pumps is connected to the unloading overflow valve through a pipeline;

[0015] Among them, a one-way throttle valve, a pilot-operated check valve, and a first reversing valve are arranged on the pipeline connecting the oil pipeline in the bottom plate block of the blanking lifting cylinder;

[0016] Among them, the centering clamping and loosening cylinder includes two symmetrically arranged cylinders, and a pressure reducing valve 7, a pilot-operated check valve, and a first reversing valve are respectively arranged on the pipelines connecting the oil pipelines in the bottom plate block of the two cylinders;

[0017] Among them, a second reversing valve is respectively arranged on the pipelines connecting the oil pipelines in the bottom plate block of the flattening lifting cylinder;

[0018] Among them, a second reversing valve is respectively arranged on the pipelines connecting the oil pipelines in the bottom plate block of the flattening loosening and clamping cylinder;

[0019] Among them, a one-way throttle valve, a pilot-operated check valve, and a first reversing valve are arranged on the pipeline connecting the oil pipeline in the bottom plate block of the tray lifting cylinder.

[0020] This embodiment provides a U-shaped copper strip flattening device and an electric control system, which includes an electric control system for controlling the up and down movement of the blanking mechanism of the blanking device, the left and right centering of the centering device, the up and down flattening and the loosening and clamping of the flattening machine body, and the up and down movement of the front and rear two rollers, and also includes a power supply and a control panel.

[0021] Further, a Siemens S7-1200 programmable controller is used as the main controller in the electric control system, which is used to control the oil pump motor and the oil cylinder solenoid valve.

[0022] Still further, the solenoid valves include a first solenoid valve arranged on the first ball valve, a second solenoid valve arranged on the second ball valve, an electromagnetic overflow valve arranged on the blanking lifting cylinder, an electromagnetic overflow valve arranged on the centering clamping and loosening cylinder, an electromagnetic overflow valve arranged on the flattening lifting cylinder, an electromagnetic overflow valve arranged on the flattening loosening and clamping cylinder, and an electromagnetic overflow valve arranged on the tray lifting cylinder.

[0023] Compared with the prior art, the beneficial technical effects of the present utility model:

[0024] In this application, the PLC control system and the full-touch screen structure enable online real-time monitoring and display of multiple parameters such as the fuel tank liquid level and oil temperature.

[0025] In this application, only by setting the start / stop buttons and the length measuring unit on the touch screen, two modes, namely manual and automatic modes, can be achieved. The circuit structure is simple and the degree of intelligent control is high.

[0026] The length measuring and speed measuring system of this application has the advantages of high length measuring accuracy, good synchronization effect between the flattening device and the continuous extruder, etc. Brief Description of the Drawings

[0027] The following further describes the present utility model in conjunction with the drawings.

[0028] Figure 1 It is a schematic diagram of the application position of the U-shaped copper strip flattening device of the present utility model;

[0029] Figure 2 It is a main control schematic diagram of the U-shaped copper strip flattening device and the electric control system of the present utility model;

[0030] Figure 3 It is a schematic diagram of the control part of the U-shaped copper strip flattening device and the electric control system of the present utility model;

[0031] Figure 4 It is another schematic diagram of the U-shaped copper strip flattening device and the electric control system of the present utility model;

[0032] Figure 5 It is a partial schematic diagram of the U-shaped copper strip flattening device and the electric control system of the present utility model.

[0033] Explanation of the reference numerals in the drawings: 1. Oil level gauge; 101. Fuel tank; 102. Air filter; 103. Oil filter; 104. Pressure gauge; 105. Return oil filter; 106. Check valve; 107. Motor; 108. Water cooler; 109. Ball valve 1; 110. Ball valve 2; 201. Base plate; 202. Electromagnetic relief valve; 203. Unloading relief valve; 204. One-way throttle valve; 205. Hydraulic control check valve; 206. Directional control valve 1; 207. Pressure reducing valve; 208. Directional control valve 2. Detailed Description of the Embodiment

[0034] This embodiment discloses a U-shaped copper strip flattening device, which includes a pressure feeding device, a centering device, a flattening machine body, a length measuring device, and a hydraulic system;

[0035] The blank holding device includes a vertical pressing mechanism, whose function is to hold the product down so that the product is vertically centered; the centering device includes a horizontal adjustment mechanism, whose function is to center the product horizontally so that it can smoothly enter the flattening machine; the flattening machine body includes a plurality of flattening rollers installed on the frame, whose function is to flatten the product; the length measuring device is a commercially available length meter.

[0036] The blank holding device includes a blank holding lifting and lowering oil cylinder; the centering device includes a centering clamping and releasing oil cylinder; the flattening machine body includes a flattening lifting and lowering oil cylinder and a flattening releasing and clamping oil cylinder; the length measuring device includes a tray lifting and lowering oil cylinder;

[0037] Among them, idler roller devices are respectively installed on the centering device and the length measuring device;

[0038] A trolley motor is installed on the flattening machine body.

[0039] In this embodiment, the hydraulic system includes an oil tank 101, an oil pipeline installed in the base plate 201 and used to connect the blank holding lifting and lowering oil cylinder, the centering clamping and releasing oil cylinder, the flattening lifting and lowering oil cylinder, the flattening releasing and clamping oil cylinder, and the tray lifting and lowering oil cylinder, and two groups of oil pumps that provide hydraulic power for the oil pipeline;

[0040] Among them, an oil main pipeline and a return oil main pipeline are installed in the base plate 201; an electromagnetic overflow valve 202 is connected between the oil main pipeline and the return oil main pipeline; a unloading overflow valve 203 is also connected between the oil main pipeline and the return oil main pipeline; the return oil main pipeline is connected to the oil tank 101 through a return oil pipeline, and a return oil filter 105 and a water cooler 108 are installed on the return oil pipeline;

[0041] Among them, an oil level gauge 1 is installed in the oil tank 101, and a return oil filter 105 is also installed on it;

[0042] Two groups of mutually standby oil pumps are installed on the oil tank 101;

[0043] One group of oil pumps includes two oil pumps connected in parallel to the oil tank 101, and one-way valves 106 are respectively installed on their respective oil outlet lines; this group of oil pumps is connected to the oil main pipeline through the oil outlet line;

[0044] The other group of oil pumps includes two oil pumps connected in parallel to the oil tank 101, and ball valves 109 / 110 are respectively installed on the two oil outlet lines; this group of oil pumps is connected to the unloading overflow valve 203 through a pipeline;

[0045] Among them, the blank holding lifting and lowering oil cylinder is provided with a one-way throttle valve 204, a hydraulic control one-way valve 205, and a first reversing valve 206 on the pipeline connecting the oil pipeline in the base plate 201;

[0046] The centering clamping and releasing oil cylinder includes two symmetrically installed oil cylinders, and a pressure reducing valve 207, a pilot-operated check valve 205, and a first reversing valve 206 are respectively installed on the pipelines connecting the oil pipelines in the bottom plate 201 of the two oil cylinders.

[0047] The flattening lifting and lowering oil cylinder is respectively provided with a second reversing valve 208 on the pipeline connecting the oil pipeline in the bottom plate 201.

[0048] The flattening releasing and clamping oil cylinder is respectively provided with a second reversing valve 208 on the pipeline connecting the oil pipeline in the bottom plate 201.

[0049] The tray lifting and lowering oil cylinder is installed with a one-way throttle valve 204, a pilot-operated check valve 205, and a first reversing valve 206 on the pipeline connecting the oil pipeline in the bottom plate 201.

[0050] In this embodiment, a U-shaped copper strip flattening device and an electric control system are provided, which include an electric control system for controlling the lifting and lowering of the pressure material mechanism of the pressure material device, the left and right centering of the centering device, the flattening lifting and lowering of the flattening machine body, the flattening releasing and clamping, and the lifting and lowering of the front and rear two rollers, and also include a power supply and a control panel.

[0051] In the electric control system, the main controller adopts a Siemens S7-1200 programmable logic controller for controlling the oil pump motor and the oil cylinder solenoid valve.

[0052] The solenoid valves include a first solenoid valve YV0' installed on the first ball valve 109, a second solenoid valve YV0" installed on the second ball valve 110, a solenoid valve YV0 installed on the electromagnetic overflow valve 202, electromagnetic overflow valves YV1.1 / YV1.2 installed on the pressure material lifting and lowering oil cylinder, electromagnetic overflow valves YV1.3 / YV1.4 installed on the centering clamping and releasing oil cylinder, electromagnetic overflow valves YV1.5 / YV1.6 installed on the flattening lifting and lowering oil cylinder, electromagnetic overflow valves YV1.7 / YV1.8 installed on the flattening releasing and clamping oil cylinder, and electromagnetic overflow valves YV1.9 / YV1.10 installed on the tray lifting and lowering oil cylinder.

[0053] Embodiment 1

[0054] As Figures 1 - 2 , this application embodiment provides a U-shaped copper strip flattening device and an electric control system, including those for controlling the left and right centering of flattening, the lifting and lowering of flattening pressure material, the lifting and lowering of flattening, the flattening releasing and clamping, the lifting and lowering of the front and rear rollers, the forward and backward movement of the trolley, the oil pump motor, the trolley motor, and the control panel;

[0055] The flattening left and right centering oil cylinder is used to drive the centering device to align the U-shaped copper strip to the middle position; the flattening pressure material rising and falling is used to align the height of the U-shaped copper strip; the flattening rising and falling is used to basically flatten the copper strip; the flattening releasing and clamping is used to completely flatten the copper strip; the front and rear idler rollers rising and falling is used to hold up the copper strip to maintain its height; the trolley moving forward and backward is used for the reciprocating movement of the flattening machine; the oil pump motor provides pressure for the hydraulic action of the flattening; the trolley motor is used for the movement of the trolley; the control panel is used for the action control and parameter setting of the flattening machine.

[0056] Specifically, it includes the following parts:

[0057] Power supply:

[0058] The electrical system of the copper strip flattening device uses AC 380V, 50HZ power supply, and the total power of the equipment is 23KW.

[0059] Electrical control system:

[0060] In the electrical control system, the main controller uses a Siemens S7-1200 programmable controller to control the oil pump motor and the electromagnetic valve of the oil cylinder;

[0061] The AC contactors and relays of the valves use products of ABB brand, and the frequency converter is of Yaskawa brand, which can improve the reliability of the system. The touch screen uses Weilin Tong TK8072IP.

[0062] The actions of the flattening device are completed by the hydraulic system and the trolley motor. When the hydraulic system works, first press the hydraulic pump start button on the control panel, and the oil pump motor works. After a certain period of time, observe whether the pressure of the oil pressure gauge is normal.

[0063] The electrical control system controls the actions such as the rising and falling of the pressure material, the rising and falling of the flattening, the releasing and clamping of the flattening, the releasing and clamping of the left centering, the releasing and clamping of the right centering, the rising and falling of the front idler roller, and the rising and falling of the rear idler roller by the on-off of 14 solenoid valves.

[0064] There is a manual / automatic selection switch on the control panel. When the selection switch is turned to the manual position: press the left and right centering release and clamp, the electromagnet is energized, and the centering oil cylinder executes the action. Press the front and rear idler roller up and down, the electromagnet is energized, and the idler roller oil cylinder executes the action.

[0065] When the selection switch is turned to the automatic mode position: Press the hydraulic pump start button, and the trolley automatically returns to the initial position. Set the flattening length on the touch screen. When the copper strip reaches the material pressing position, perform the material pressing action to make the height of the copper strip appropriate. When it reaches the centering position, perform the left - right centering operation to make the position of the copper strip in the middle. Press the length measuring device on the copper strip and clear and initialize the measured length. When the copper strip reaches the flattening machine and reaches the set length, the flattening release, clamping, and flattening up - down start to execute the clamping and descending actions to flatten the copper strip. At the same time, the flattening trolley moves with the copper strip, making the flattening machine and the copper strip move forward synchronously and synchronize with the production speed of the extrusion machine. When reaching the flattening down limit and the flattening clamping limit, the flattening is completed, the flattening is released, the flattening rises, and it leaves the copper strip. When reaching the rising limit and the release limit, at this time, the flattening trolley moves in the direction of returning to the initial position until it reaches the initial position, waiting for the next measured length to be reached and then performing the actions again. Repeating such cyclic actions realizes the continuous on - line production of the flattening machine and the extrusion machine.

[0066] On the touch screen, there are set length, measured length, total measured length, measured length reset, hydraulic oil temperature, initial position, down limit, up limit, release limit, clamping limit, flattening end position, flattening frequency conversion alarm, and emergency stop alarm.

[0067] Safety measures:

[0068] The electric control system is equipped with an emergency stop button. When abnormal working conditions occur, the emergency stop button can be pressed to cut off the power supply of the equipment. The outer shell of the flattening machine is grounded to prevent electric leakage.

[0069] The hydraulic oil pressure detection sensor sends the pressure to the PLC, and then there is pressure monitoring and over - pressure alarm.

[0070] The frequency converter alarm of the flattening trolley and the audible and visual alarm of the alarm light.

[0071] For the flattening release and clamping, flattening up - down, initial position and end position of the flattening trolley, there are double limits.

[0072] Equipment overview:

[0073] Equipment name: U - shaped copper strip flattening device;

[0074] Main technical parameters:

[0075] Operating temperature: 4 - 50 degrees Celsius;

[0076] Cable interface: SIMCO heavy - duty connector

[0077] Drive mode: Hydraulic drive and motor drive

[0078] Electric control mode: Manual / automatic control

[0079] Control System:

[0080] The Siemens S7-1200 PLC control system can automatically complete the corresponding hydraulic actions, monitor the hydraulic pressure through a pressure sensor,

[0081] and achieve the forward and backward movement of the flattening trolley and the adjustment of the trolley speed by controlling the Yaskawa frequency converter.

[0082] Example 2

[0083] On the basis of Example 1, the following operating method is also included:

[0084] Close the main power switch, the power indicator light is on, and the green warning light is on;

[0085] Select the automatic mode;

[0086] Press the hydraulic pump start button;

[0087] Press the material pressing button to press the U-shaped copper strip to the appropriate height;

[0088] Press the centering button to align the U-shaped copper strip to the appropriate position;

[0089] Lower the length measuring device and press it on the U-shaped copper strip;

[0090] Set the length on the touch screen of the flattening operation box, and then reset the length measurement;

[0091] Adjust the front and rear rollers to the appropriate height to lift the U-shaped copper strip;

[0092] The flattening trolley is in the initial position;

[0093] The copper strip reaches the set length;

[0094] The flattening descends; the flattening clamps; the flattening trolley moves forward;

[0095] The flattening descends to the limit; the flattening clamps to the limit;

[0096] The flattening ascends, the flattening releases; the measured length is automatically cleared;

[0097] The flattening ascends to the limit, the flattening releases to the limit;

[0098] The flattening trolley moves backward to the initial position;

[0099] The program completes a cycle, and the system enters the automatic hold state;

[0100] Wait until the next time the measured length is reached and then perform the actions. Repeat this process to make the flattening machine and the extrusion machine run synchronously online.

[0101] When stopping the machine, first squeeze the machine so that the copper strip no longer extrudes from the extruder, then stop the flattening hydraulic pump and switch it to the manual mode.

[0102] Embodiment 3

[0103] Based on Embodiments 1 and 2, it further includes: the operation instructions of the touch screen, and the specific process is as follows:

[0104] After power-on, the touch screen enters the display screen;

[0105] It is divided into basic parameters, status monitoring and fault alarm;

[0106] The basic parameters include set length, counted length, line speed, total counted length, counted reset, and hydraulic oil temperature;

[0107] Manually set the required length. The counted length, line speed, total counted length, and hydraulic oil temperature are for display, and the counted reset is used to clear the counted length.

[0108] The status monitoring includes the status display of the flattening initial position, fixed-length signal, lower limit, upper limit, release limit, and clamping limit;

[0109] The fault alarm includes the alarm display of emergency stop, flattening frequency conversion, hydraulic pump, flattening final position, and flattening initial position at all times.

[0110] The above embodiments are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A U-shaped copper strip flattening device, characterized in that: It includes a material pressing device, a centering device, a flattening machine body, a metering device, and a hydraulic system; The material pressing device includes a material pressing ascending and descending oil cylinder; the centering device includes a centering clamping and releasing oil cylinder; the flattening machine body includes a flattening ascending and descending oil cylinder and a flattening and releasing clamping oil cylinder; the metering device includes a tray ascending and descending oil cylinder; The hydraulic system comprises an oil tank (101), an oil pipeline arranged in the bottom plate (201) and used to connect the material pressing ascending and descending oil cylinder, the centering clamping and loosening oil cylinder, the flattening ascending and descending oil cylinder, the flattening and loosening clamping oil cylinder, and the tray ascending and descending oil cylinder, and two groups of oil pumps that provide hydraulic power to the oil pipeline; An oil delivery main line and an oil return main line are arranged in the bottom plate (201); an electromagnetic overflow valve (202) is connected between the oil delivery main line and the oil return main line; a load relief valve (203) is also connected between the oil delivery main line and the oil return main line; the oil return main line is connected to the oil tank (101) via an oil return pipeline, and an oil return filter (105) and a water cooler (108) are arranged on the oil return pipeline; An oil mark (1) is arranged in the oil tank (101), and an oil return filter (105) is arranged on the oil mark; Two sets of oil pumps serving as backup for each other are arranged on the oil tank (101); One group of oil pumps includes two oil pumps connected in parallel to the oil tank (101), and one-way valves (106) are provided on their respective oil outlet lines; the oil pumps in the group are connected to the oil main line through the oil outlet lines; Another group of oil pumps includes two oil pumps connected in parallel to the oil tank (101), and ball valves (109 / 110) are respectively provided on two oil outlet lines; the group of oil pumps is connected to the unloading relief valve (203) through a pipeline; The material pressing and lifting oil cylinder is provided with a one-way throttle valve (204), a hydraulic one-way valve (205), and a reversing valve (206) on a pipeline connected to an oil pipeline in the bottom plate (201); The centering clamping and loosening oil cylinder comprises two symmetrically arranged oil cylinders, and the two oil cylinders are respectively provided with a pressure reducing valve (207), a hydraulically controlled non-return valve (205), and a reversing valve (206) on a pipeline connected to an oil pipeline in the bottom plate (201); The flattening, ascending and descending oil cylinders are respectively provided with a second reversing valve (208) on the pipelines connected to the oil pipeline in the bottom plate (201); The flattening and loosening clamping oil cylinder is respectively provided with a second reversing valve (208) on a pipeline connected to an oil pipeline in the bottom plate (201); The tray ascending and descending oil cylinder is provided with a one-way throttle valve (204), a hydraulic one-way valve (205), and a reversing valve (206) on a pipeline connected to an oil pipeline in the bottom plate (201).

2. A U-shaped copper strip flattening device and an electric control system, applied to the U-shaped copper strip flattening device according to claim 1, characterized in that: It includes an electrical control system for controlling the rise and fall of the pressing mechanism of the pressing device, the left and right centering of the centering device, the flattening rise and fall and flattening release and clamping of the flattening machine body, and the rise and fall of the front and rear rollers, as well as a power supply and a control panel.

3. The U-shaped copper strip flattening device and electric control system according to claim 2, characterized in that: The main controller in the electrical control system adopts Siemens S7-1200 programmable controller, which is used to control the oil pump motor and the oil cylinder solenoid valve.

4. The U-shaped copper strip flattening device and electric control system according to claim 3, characterized in that: The solenoid valves include a solenoid valve 1 (YV0') arranged on a ball valve 1 (109), a solenoid valve 2 (YV0") arranged on a ball valve 2 (110), a solenoid valve (YV0) arranged on the solenoid overflow valve (202), a solenoid overflow valve (YV1.1 / YV1.2) arranged on a material pressing ascending and descending cylinder, a solenoid overflow valve (YV1.3 / YV1.4) arranged on a centering clamping and releasing cylinder, a solenoid overflow valve (YV1.5 / YV1.6) arranged on a flattening ascending and descending cylinder, a solenoid overflow valve (YV1.7 / YV1.8) arranged on a flattening and releasing clamping cylinder, and a solenoid overflow valve (YV1.9 / YV1.10) arranged on a pallet ascending and descending cylinder.

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