Buffering roller pulling oil cylinder control system and control method
By setting up an overflow valve and a pressure balance valve in parallel in the buffer pull-up cylinder, combining the control battery valve and the pressure reducing valve, the problem of insufficient impact force adjustment in the existing technology is solved, and good sinking buffering and safety performance is achieved. Avoid damage to the oil cylinder and safety hazards.
Patent Information
- Application Number
- CN202411476246.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-01-07
AI Technical Summary
The existing buffer pull roller cylinders have insufficient impact adjustment, resulting in excessive rebound force, which can easily cause paper throwing and oil cylinder damage, and the inability to effectively stop the paper rolling roller, which poses a major safety hazard.
The relief valve and pressure balance valve are arranged in parallel. The oil flow is balanced when the relief valve is impacted. The pressure balance valve locks itself during major impact to prevent the oil cylinder from falling rapidly. It combines the control battery valve and the pressure reducing valve for alternate conduction. To control the flow of oil in the oil cylinder.
It achieves good sinking buffering effect and safety performance, prevents the oil cylinder from falling rapidly, reduces the impact force of the oil cylinder, and avoids oil circuit damage and pipe bursting.
Smart Images
Figure CN119267365A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of oil cylinder control, in particular to a buffering roller oil cylinder control system and a control method. Background Art
[0002] The paper reel is a set of equipment at the end of the paper machine. The paper is evenly wound by the weight of the parent roll and the friction of the cold cylinder. The paper reel has several important components: main arm (primary arm), lifting arm (roller removal arm), paper shaft clamp (clamp arm), secondary arm, paper shaft starter, etc. After the paper reel is finished, it needs to move forward a distance by using the high-speed rotation of the paper reel. When the paper reel reaches the end, it needs to be stopped by the buffer roll cylinder.
[0003] Since the weight of the paper winding roller is very large, the impact force on the buffer roller cylinder is very huge. In the prior art, during the rising process of the buffer roller cylinder, the buffering force is adjusted by the pressure reducing valve. The rebound force is too large, resulting in poor braking and serious paper throwing. At the same time, it also causes serious impact on the cylinder and the solenoid valve, which is easy to cause a pipe burst, resulting in the inability to stop the paper winding roller, posing a great safety hazard. Therefore, in view of these current situations, it is urgent to develop a buffer roller cylinder control system and control method to meet the needs of actual use. Summary of the invention
[0004] The purpose of the present invention is to provide a buffer pull roller oil cylinder control system and control method, which is used to solve the defects that the existing pressure reducing valve alone can only alleviate the buffering effect of the oil cylinder impact force, and the oil circuit of the oil cylinder is easily damaged and burst, and the paper winding roller cannot be stopped.
[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A buffer pull roller cylinder control system includes a control part and a cylinder, one end of the cylinder is a rod chamber, and the other end of the cylinder is a rodless chamber, the rodless chamber and the rod chamber are respectively connected to the control part through a rodless chamber channel and a rod chamber channel, an overflow valve arranged in parallel is provided between the rod chamber channel and the rodless chamber channel, a pressure balancing valve is provided between the overflow valve and the rodless chamber channel, the pressure balancing valve includes a first conducting end, a second conducting end and a pressure conducting end, one end of the rodless chamber is connected to the first conducting end, the second conducting end is connected to the rodless chamber channel, the pressure conducting end is connected to the rod chamber channel, and control battery valves are provided at the ends of the rodless chamber channel and the rod chamber channel.
[0006] In the above description, as a further scheme, the control battery valve includes an electromagnetic terminal a, an electromagnetic terminal b, an oil supply terminal, an oil discharge terminal, a first connection port and a second connection port. The end of the rodless cavity channel is connected to the first connection port, and the end of the rod cavity channel is connected to the second connection port. The electromagnetic terminal a and the electromagnetic terminal b are used to control the alternating conduction between the first connection port and the second connection port and the oil supply terminal and the oil discharge terminal.
[0007] In the above description, as a further solution, the rodless chamber channel and the rod chamber channel of the control part are provided with a hand valve and a two-way throttle valve in sequence toward the oil cylinder side.
[0008] In the above description, as a further solution, a pressure reducing valve is provided on the outer side of the oil supply end.
[0009] A control method for a buffer roller pulling cylinder is based on the above-mentioned buffer roller pulling cylinder control system, the overflow valve is provided with a first threshold pressure, the pressure conducting end of the pressure balance valve is provided with a second threshold pressure, when the rod chamber of the cylinder is in the rising stage, the oil pressure in the rodless chamber is less than the first threshold pressure, the overflow valve forms a cut-off state, when the rod chamber of the cylinder is in the rising stage, the oil pressure in the rodless chamber is greater than the first threshold pressure, the overflow valve forms a conducting state, the oil in the rodless chamber can overflow to the rod chamber channel through the overflow valve, when the rod chamber of the cylinder is in the rising stage, the oil pressure at the pressure conducting end is less than the second threshold pressure, and a cut-off state is formed between the first conducting end and the second conducting end.
[0010] In the above description, as a further solution, the electromagnetic end b is energized, the oil supply end is conductively connected to the first connection port, the second connection port is conductively connected to the oil discharge end, the electromagnetic end a is energized, the oil supply end is conductively connected to the second connection port, and the first connection port is conductively connected to the oil discharge end.
[0011] The beneficial effects produced by the present invention are as follows: The present application discloses a control system and control method for a buffered roller pulling cylinder. On the one hand, a relief valve is provided in parallel between a rod cavity channel and a rodless cavity channel. When the cylinder is impacted and the pressure threshold is kept within a set range, the excess oil in the rodless cavity can overflow to the rod cavity channel through the relief valve to form a conductive state, and gradually balance the oil flow between the rod cavity channel and the rodless cavity channel, so that the cylinder can play a good sinking buffering effect. On the other hand, the pressure balancing valve installed between the overflow valve and the rodless chamber channel can self-lock the rodless chamber when the rod chamber is subjected to a severe impact force, causing a pipe burst, and effectively prevent the oil cylinder from falling rapidly, thus having excellent safety performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1This is a schematic diagram of the structure of a buffer roller cylinder control system according to the present invention; Figure 2 It is a partial structural schematic diagram of the medium pressure balancing valve of the present invention; Figure 3 It is a partial structural schematic diagram of the control battery valve of the present invention; In the figure: 1-oil cylinder, 11-rod chamber, 12-rodless chamber, 13-rodless chamber channel, 14-rod chamber channel, 2-overflow valve, 3-pressure balance valve, 31-first conduction end, 32-second conduction end, 33-pressure conduction end, 4-two-way throttle valve, 5-hand valve, 6-control battery valve, 61-electromagnetic end a, 62-electromagnetic end b, 63-oil supply end, 64-oil discharge end, 65-first connecting port, 66-second connecting port, 7-pressure reducing valve. DETAILED DESCRIPTION
[0013] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.
[0014] See also Figure 1-3 A buffer puller cylinder control system is specifically implemented, including a control part and a cylinder 1, one end of the cylinder 1 is a rod chamber 11, and the other end of the cylinder 1 is a rodless chamber 12, the rodless chamber 12 and the rod chamber 11 are respectively connected to the control part through a rodless chamber channel 13 and a rod chamber channel 14, and the rodless chamber channel 13 and the rod chamber channel 14 of the control part are successively provided with a hand valve 5 and a two-way throttle valve 4 toward the cylinder 1 side.
[0015] An overflow valve 2 is provided in parallel between the rod chamber channel 14 and the rodless chamber channel 13, and a pressure balancing valve 3 is provided between the overflow valve 2 and the rodless chamber channel 13. The pressure balancing valve 3 includes a first conducting end 31, a second conducting end 32 and a pressure conducting end 33. One end of the rodless chamber 12 is connected to the first conducting end 31, the second conducting end 32 is connected to the rodless chamber channel 13, and the pressure conducting end 33 is connected to the rod chamber channel 14. Control battery valves 6 are provided at the ends of the rodless chamber channel 13 and the rod chamber channel 14.
[0016] Specific as Figure 3 As shown, the control battery valve 6 includes an electromagnetic end a61, an electromagnetic end b62, an oil supply end 63, an oil discharge end 64, a first connection port 65 and a second connection port 66. The end of the rodless cavity channel 13 is connected to the first connection port 65, and the end of the rod cavity channel 14 is connected to the second connection port 66. The electromagnetic end a61 and the electromagnetic end b62 are used to control the alternating conduction between the first connection port 65 and the second connection port 66 and the oil supply end 63 and the oil discharge end 64. A pressure reducing valve 7 is provided on the outside of the oil supply end 63.
[0017] An overflow valve 2 is provided in parallel between the rod chamber channel 14 and the rodless chamber channel 13. When the oil cylinder 1 is impacted and the pressure threshold is kept within the set range, the excess oil in the rodless chamber 12 can overflow to the rod chamber channel 14 through the overflow valve 2 to form a conductive state, and gradually balance the oil flow between the rod chamber channel 14 and the rodless chamber channel 13, so that the oil cylinder 1 can achieve a good sinking buffering effect.
[0018] The pressure balancing valve 3 arranged between the overflow valve 2 and the rodless chamber channel 13 can self-lock the rodless chamber 12 when the rod chamber 11 is subjected to a severe impact force resulting in a pipe burst, thereby effectively preventing the oil cylinder 1 from descending rapidly and having excellent safety performance.
[0019] A control method for a buffer roller pulling cylinder is based on the above-mentioned control system of a buffer roller pulling cylinder 1, wherein the relief valve 2 is provided with a first threshold pressure, and the pressure conducting end 33 of the pressure balance valve 3 is provided with a second threshold pressure. When the rod chamber 11 of the cylinder 1 is in the rising stage, the oil pressure in the rodless chamber 12 is less than the first threshold pressure, and the relief valve 2 forms a cut-off state. When the rod chamber 11 of the cylinder 1 is in the rising stage, the oil pressure in the rodless chamber 12 is greater than the first threshold pressure, and the relief valve 2 forms a conducting state. The oil in the rodless chamber 12 can overflow to the rod chamber channel 14 through the relief valve 2. When the rod chamber 11 of the cylinder 1 is in the rising stage, the oil pressure at the pressure conducting end 33 is less than the second threshold pressure, and a cut-off state is formed between the first conducting end 31 and the second conducting end 32.
[0020] The process when the oil cylinder 1 is in the ascending state: the electromagnetic terminal b62 is energized, the oil supply terminal 63 is connected to the first connection port 65, the second connection port 66 is connected to the oil discharge terminal 64, and the oil flows along the pressure reducing valve 7, the oil supply terminal 63, the first connection port 65, the hand valve 5 and the pressure balance valve 3 to the inside of the rodless chamber 12, wherein the relief valve 2 is in a cut-off state; When the oil cylinder 1 is impacted, the overflow valve 2 connects the rod chamber channel 14 and the rodless chamber channel 13. The excess oil in the rodless chamber 12 can overflow to the rod chamber channel 14 through the overflow valve 2 to form a conductive state, and gradually balance the oil flow between the rod chamber channel 14 and the rodless chamber channel 13, so that the oil cylinder 1 can achieve a good sinking buffering effect.
[0021] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.
Claims
1. A buffer puller cylinder control system, characterized in that: include: A control part and an oil cylinder, one end of the oil cylinder is a rod cavity, and the other end of the oil cylinder is a rodless cavity, and the rodless cavity and the rod cavity are respectively connected to the control part through a rodless cavity channel and a rod cavity channel; An overflow valve is arranged in parallel between the rod cavity channel and the rodless cavity channel, a pressure balancing valve is arranged between the overflow valve and the rodless cavity channel, the pressure balancing valve includes a first conducting end, a second conducting end and a pressure conducting end, one end of the rodless cavity is connected to the first conducting end, the second conducting end is connected to the rodless cavity channel, the pressure conducting end is connected to the rod cavity channel, and control battery valves are arranged at the ends of the rodless cavity channel and the rod cavity channel.
2. A buffer puller cylinder control system according to claim 1, characterized in that: The control battery valve includes an electromagnetic end a, an electromagnetic end b, an oil supply end, an oil discharge end, a first connection port and a second connection port. The end of the rodless cavity channel is connected to the first connection port, and the end of the rod cavity channel is connected to the second connection port. The electromagnetic end a and the electromagnetic end b are used to control the alternating conduction between the first connection port and the second connection port and the oil supply end and the oil discharge end.
3. A buffer puller cylinder control system according to claim 1, characterized in that: The rodless cavity channel and the rod cavity channel of the control part are provided with a hand valve and a two-way throttle valve in sequence toward the oil cylinder side.
4. A buffer puller cylinder control system according to claim 2, characterized in that: A pressure reducing valve is arranged on the outer side of the oil supply end.
5. A control method for a buffer puller cylinder, characterized in that: A buffer puller cylinder control system based on any one of claims 1 to 4, wherein: The overflow valve is provided with a first threshold pressure, and the pressure conduction end of the pressure balance valve is provided with a second threshold pressure. When the rod chamber of the oil cylinder is in the ascending stage, the oil pressure of the rodless chamber is less than the first threshold pressure, and the overflow valve forms a cut-off state. When the rod chamber of the oil cylinder is in the ascending stage, the oil pressure of the rodless chamber is greater than the first threshold pressure, the relief valve is in a conducting state, and the oil in the rodless chamber can overflow to the rod chamber channel through the relief valve; When the rod chamber of the oil cylinder is in the ascending stage, the oil pressure at the pressure conducting end is less than the second threshold pressure, and a cut-off state is formed between the first conducting end and the second conducting end.
6. The control method of a buffer puller cylinder according to claim 5, characterized in that: The electromagnetic end b is energized, the oil supply end is connected to the first connection port, and the second connection port is connected to the oil discharge end; The electromagnetic terminal a is energized, the oil supply terminal is conductively connected to the second connection port, and the first connection port is conductively connected to the oil discharge terminal.