Ejection oil cylinder hydraulic system of ceramic press
The hydraulic system for the ejector cylinder in ceramic presses achieves low-cost, precise control of ejector movement through a memory adjustment cylinder with adjustable chambers and solenoid valves, addressing the high-cost and maintenance issues of existing systems.
Patent Information
- Application Number
- CN202420401386.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-01
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-01
AI Technical Summary
Existing ejector devices in ceramic presses require high-precision displacement sensors and proportional servo valves, leading to high costs and maintenance challenges due to contamination risks and complexity.
A hydraulic system for the ejector cylinder in a ceramic press that utilizes a memory adjustment cylinder with adjustable adjustment chambers and solenoid valves for stepless control of variable working conditions, eliminating the need for displacement sensors and proportional servo valves.
Enables low-cost, simple maintenance, and precise control of the ejector cylinder's extension and retraction with stepless adjustment of working conditions, reducing the risk of valve jamming and maintenance costs.
Smart Images
Figure CN222254478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic systems, in particular to an ejection cylinder hydraulic system of a ceramic press. Background Art
[0002] A ceramic press is a device for manufacturing ceramic products. During the ceramic product forming process, raw materials such as ceramic powder or slurry are first filled into the mold. The ceramic press applies a certain pressure to press the raw materials into shape. After forming, the ejector device ejects the formed ceramic product from the mold. The current ejector device of the ceramic press usually includes an ejector cylinder, which is controlled by a hydraulic system. In order to achieve high-precision control of the extension and retraction of the ejector cylinder, the ejector cylinder is usually equipped with a displacement sensor and a proportional servo valve. The displacement sensor is used to sense the displacement of the ejector cylinder. The proportional servo valve accurately controls the working pressure or flow of the hydraulic system according to the feedback signal of the displacement sensor. However, this joint control system cannot achieve the adjustment of variable working conditions, and needs to be equipped with high-precision displacement sensors and proportional servo valves, which are costly and have high requirements for the cleanliness of the hydraulic oil. There is a risk of valve jamming if there is a slight contamination, and the maintenance and use costs are high. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a hydraulic system of an ejection cylinder of a ceramic press, which can realize stepless adjustment of variable working conditions, has low cost and simple maintenance.
[0004] In order to solve the above technical problems, the utility model provides an ejector cylinder hydraulic system for a ceramic press, comprising an ejector plate, an ejector cylinder transmission connected to the ejector plate, a synchronous cylinder communicated with the ejector cylinder, a synchronous connecting plate connected to the piston rod of the synchronous cylinder, a memory adjustment cylinder transmission connected to the synchronous connecting plate, and an adjustment control component communicated with the memory adjustment cylinder.
[0005] The memory adjustment cylinder includes a first piston rod, a first adjustment chamber and a second adjustment chamber, and the adjustment control component includes a first adjustment valve and a second adjustment valve. The first adjustment valve is connected to the first adjustment chamber and the second adjustment chamber respectively, and the second adjustment valve is connected to the second adjustment chamber. The second adjustment valve can adjust the size of the first adjustment chamber, and the first piston rod can move in the first adjustment chamber.
[0006] As an improvement of the above scheme, the first regulating valve includes a tank port, a control port, a first outlet and a second outlet, and the regulating control component also includes a first control oil circuit, the first control oil circuit is connected to the control port, the first outlet is connected to the first regulating chamber, the second outlet is connected to the second regulating chamber, and the tank port is connected to an external tank.
[0007] As an improvement of the above scheme, the memory adjusting cylinder also includes a movable plate, which is separated between the first adjusting chamber and the second adjusting chamber. The first piston rod divides the first adjusting chamber into an upper adjusting chamber and a lower adjusting chamber. The upper adjusting chamber is connected to the second adjusting valve, and the lower adjusting chamber is connected to the first outlet. The lower adjusting chamber and the upper adjusting chamber jointly drive the first piston rod to move, and the second adjusting chamber controls the position of the movable plate.
[0008] As an improvement of the above scheme, the movable end of the first piston rod is connected to the synchronous connecting plate, the synchronous oil cylinder includes a second piston rod and a synchronous oil chamber, one end of the second piston rod is connected to a side of the synchronous connecting plate away from the first piston rod, and the other end of the second piston rod is slidably disposed in the synchronous oil chamber.
[0009] As an improvement of the above solution, a connecting oil circuit is provided between the ejection oil cylinder and the synchronous oil cylinder, the ejection oil cylinder includes an ejection oil chamber, one end of the connecting oil circuit is connected to the ejection oil chamber, and the other end of the connecting oil circuit is connected to the synchronous oil chamber.
[0010] As an improvement of the above solution, the ejection oil cylinder includes a third piston rod, the third piston rod is arranged in the ejection oil chamber, and the movable end of the third piston rod is connected to the ejection plate.
[0011] As an improvement of the above solution, the regulating control component further includes a second control oil circuit, and the second control oil circuit is connected to the second regulating valve for controlling the second regulating valve.
[0012] As an improvement of the above-mentioned solution, the ejection cylinder hydraulic system of the ceramic press also includes a master cylinder, which includes a main piston rod, a piston rod chamber, a piston chamber and a third control oil circuit. The main piston rod is arranged between the piston rod chamber and the piston chamber, and the third control oil circuit is connected to the piston chamber.
[0013] As an improvement of the above solution, the first regulating valve and the second regulating valve are solenoid valves.
[0014] The implementation of this utility model has the following beneficial effects:
[0015] The hydraulic system of the ejector cylinder of the utility model ceramic press is provided with an ejector plate, an ejector cylinder, a synchronous cylinder, a synchronous connecting plate, a memory adjustment cylinder and an adjustment control assembly, wherein the memory adjustment cylinder is used to control the synchronous cylinder, the synchronous cylinder can control the ejector cylinder, the ejector cylinder controls the ejector plate to extend and retract, and the adjustment control assembly can adjust the memory adjustment cylinder, wherein the memory adjustment cylinder includes a first piston rod, a first adjustment chamber and a second adjustment chamber, and the adjustment control assembly includes a first adjustment valve and a second adjustment valve, the second adjustment valve can adjust the size of the first adjustment chamber, the first piston rod can move in the first adjustment chamber, the size of the first adjustment chamber is adjusted by the second adjustment valve, and the range of movement of the first piston rod can be adjusted to adapt to different working conditions, and the size of the first adjustment chamber is adjusted to stepless adjustment, which can realize stepless adjustment of variable working conditions. Moreover, variable working condition adjustment can be realized without using displacement sensors and proportional servo valves, which has the advantages of low cost and simple maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the hydraulic system of the ejection cylinder of the utility model ceramic press;
[0017] Figure 2 The utility model is a structural schematic diagram of a memory regulating oil cylinder and a regulating control component of a ceramic press. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.
[0019] See also Figure 1 and Figure 2 The embodiment of the utility model discloses a hydraulic system of an ejector cylinder 2 of a ceramic press, comprising an ejector plate 1, an ejector cylinder 2 connected to the ejector plate 1 by transmission, a synchronous cylinder 3 connected to the ejector cylinder 2, a synchronous connecting plate 4 connected to the piston rod of the synchronous cylinder 3, a memory adjustment cylinder 5 connected to the synchronous connecting plate 4 by transmission, and an adjustment control component 6 connected to the memory adjustment cylinder 5. The ejector plate 1 is used to eject the formed blank, the ejector cylinder 2 controls the ejector plate 1, the synchronous cylinder 3 controls the action of the ejector cylinder 2, the synchronous connecting plate 4 is used to simultaneously control the unified stroke of multiple synchronous cylinders 3, the memory adjustment cylinder 5 is used to control the synchronous connecting plate 4, and the adjustment control component 6 is used to control the activity and variable working condition of the memory adjustment cylinder 5.
[0020] Specifically, the memory adjustment cylinder 5 includes a first piston rod 51, a first adjustment chamber 52 and a second adjustment chamber 53, the adjustment control assembly 6 includes a first adjustment valve 61 and a second adjustment valve 62, the first adjustment valve 61 is connected to the first adjustment chamber 52 and the second adjustment chamber 53 respectively, the second adjustment valve 62 is connected to the second adjustment chamber 53, the first piston rod 51 can move in the first adjustment chamber 52, the first adjustment valve 61 and the second adjustment valve 62 jointly adjust the movement of the first piston rod 51, and the second adjustment valve 62 can adjust the first The size of the adjusting chamber 52 can adjust the moving stroke range of the first piston rod 51. When it is necessary to increase the moving range of the first piston rod 51, hydraulic oil is injected through the second regulating valve 62 to increase the volume of the first regulating chamber 52, and the moving range of the first piston rod 51 is increased; when it is necessary to reduce the moving range of the first piston rod 51, hydraulic oil is discharged through the second regulating valve 62 to reduce the volume of the first regulating chamber 52, thereby realizing the adjustment of different working conditions, and stepless adjustment can be achieved through the first regulating valve 61 to realize stepless adjustment of variable working conditions.
[0021] The beneficial effects of the embodiments of the present utility model are as follows:
[0022] The hydraulic system of the ejection cylinder 2 of the ceramic press of the utility model embodiment is provided with an ejection plate 1, an ejection cylinder 2, a synchronous cylinder 3, a synchronous connecting plate 4, a memory adjustment cylinder 5 and an adjustment control component 6, wherein the memory adjustment cylinder 5 is used to control the synchronous cylinder 3, the synchronous cylinder 3 can control the ejection cylinder 2, the ejection cylinder 2 controls the ejection plate 1 to extend and retract, the adjustment control component 6 can adjust the memory adjustment cylinder 5, wherein the memory adjustment cylinder 5 comprises a first piston rod 51, a first adjustment chamber 52 and a second adjustment chamber 53, the adjustment control component 6 comprises a first adjustment valve 61 and a second adjustment valve 62, the second adjustment valve 62 can adjust the size of the first adjustment chamber 52, the first piston rod 51 can move in the first adjustment chamber 52, the size of the first adjustment chamber 52 is adjusted by the second adjustment valve 62, the range of movement of the first piston rod 51 can be adjusted, so as to adapt to different working conditions, the size of the first adjustment chamber 52 is adjusted to be stepless, and stepless adjustment of variable working conditions can be realized. Moreover, variable working condition adjustment can be achieved without the use of displacement sensors and proportional servo valves, which has the advantages of low cost and simple maintenance.
[0023] Specifically, the first regulating valve 61 includes a tank port 611, a control port 612, a first outlet 613 and a second outlet 614. The regulating control component 6 also includes a first control oil circuit, which is connected to the control port 612. The first regulating valve 61 controls the opening and closing of the control port 612 and the first outlet 613 and the second outlet 614 respectively, wherein the first outlet 613 is connected to the first regulating chamber 52, the second outlet 614 is connected to the second regulating chamber 53, and the tank port 611 is connected to an external tank. When it is necessary to increase the volume of the first regulating chamber 52, the second outlet 614 is connected to the oil tank port 611, and the hydraulic oil enters the first regulating chamber 52 from the second regulating valve 62, the first regulating chamber 52 increases, the volume of the second regulating chamber 53 decreases, and the hydraulic oil in the second regulating chamber 53 is discharged from the oil tank port 611 through the second outlet 614; when it is necessary to reduce the volume of the first regulating chamber 52, the second outlet 614 is connected to the control port 612, and the hydraulic oil enters the second regulating chamber 53 from the control port 612, the volume of the second regulating chamber 53 increases, and at the same time, the hydraulic oil in the first regulating chamber 52 is discharged from the second regulating valve 62, and the volume of the first regulating chamber 52 decreases.
[0024] Furthermore, the memory adjustment cylinder 5 also includes a movable plate 54, which is separated between the first adjustment chamber 52 and the second adjustment chamber 53. The first adjustment chamber 52 and the second adjustment chamber 53 simultaneously control the movement of the movable plate 54. Specifically, the first piston rod 51 divides the first adjustment chamber 52 into an upper adjustment chamber 521 and a lower adjustment chamber 522. The upper adjustment chamber 521 is connected to the second adjustment valve 62, and the lower adjustment chamber 522 is connected to the first outlet 613. The lower adjustment chamber 522 and the upper adjustment chamber 521 jointly drive the first piston rod 51 to move, and the second adjustment chamber 53 controls the position of the movable plate 54.
[0025] When it is necessary to increase the volume of the first regulating chamber 52, the second outlet 614 is connected to the tank port 611, and the hydraulic oil enters the first regulating chamber 52 from the second regulating valve 62, the first regulating chamber 52 increases, the volume of the second regulating chamber 53 decreases, and the hydraulic oil in the second regulating chamber 53 is discharged from the tank port 611 through the second outlet 614; when it is necessary to reduce the volume of the first regulating chamber 52, the second outlet 614 is connected to the control port 612, and the hydraulic oil enters the second regulating chamber 53 from the control port 612, the volume of the second regulating chamber 53 increases, and at the same time, the hydraulic oil in the upper regulating chamber 521 is discharged from the second regulating valve 62, and the volume of the first regulating chamber 52 decreases.
[0026] When it is necessary to control the movement of the first piston rod 51, the movable block is kept stationary. At this time, the volume of the first regulating chamber 52 remains unchanged, the lower regulating chamber 522 is connected to the control port 612, and the upper regulating chamber 521 is connected to the second control valve. Through the first control oil circuit and the second control valve, the pressure changes of the upper regulating chamber 521 and the lower regulating chamber 522 can be controlled respectively, thereby driving the first piston rod 51 to move in the first regulating chamber 52.
[0027] The movable end of the first piston rod 51 is connected to the synchronous connecting plate 4. The synchronous oil cylinder 3 includes a second piston rod 31 and a synchronous oil chamber 32. One end of the second piston rod 31 is connected to the side of the synchronous connecting plate 4 away from the first piston rod 51, and the other end of the second piston rod 31 is slidably disposed in the synchronous oil chamber 32. The first piston rod 51 can simultaneously control the movement of multiple second piston rods 31 through the synchronous connecting plate 4. The movement of the second piston rod 31 will affect the pressure change of the synchronous oil chamber 32. A connecting oil path 33 is provided between the ejection oil cylinder 2 and the synchronous oil cylinder 3. The ejection oil cylinder 2 includes an ejection oil chamber 21. One end of the connecting oil path 33 is connected to the ejection oil chamber 21, and the other end of the connecting oil path 33 is connected to the synchronous oil chamber 32. The pressure change of the synchronous oil chamber 32 will affect the pressure change of the ejection oil chamber 21 through the connecting oil passage 33. The ejection oil cylinder 2 includes a third piston rod 22, which is disposed in the ejection oil chamber 21. The movable end of the third piston rod 22 is connected to the ejection plate 1. The pressure change of the ejection oil chamber 21 will be transmitted to the third piston rod 22, and the third piston rod 22 will control the ejection plate 1 to move.
[0028] The regulating control assembly 6 also includes a second control oil circuit 64, which is connected to the second regulating valve 62 and is used to control the second regulating valve 62. The plurality of ejection cylinders 2 are arranged on the side of the ejection plate 1. In order to ensure the stability of ejection, the hydraulic system of the ejection cylinder 2 of the ceramic press also includes a master cylinder 7, which is arranged in the middle of the ejection plate 1. The master cylinder 7 includes a main piston rod 71, a piston rod cavity 72, a piston cavity 73 and a third control oil circuit 74. The main piston rod 71 is arranged between the piston rod cavity 72 and the piston cavity 73. The third control oil circuit 74 is connected to the piston cavity 73. The third control oil circuit 74 can control the pressure changes of the piston rod cavity 72 and the piston cavity 73, thereby controlling the movement of the third piston rod 22.
[0029] In order to achieve precise control, the first regulating valve 61 and the second regulating valve 62 are preferably solenoid valves, which can reduce component costs while achieving high-precision electronic control.
[0030] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications are also considered to be within the protection scope of the present utility model.
Claims
1. A hydraulic system for an ejector cylinder of a ceramic press, characterized in that: It includes an ejection plate, an ejection oil cylinder transmission-connected to the ejection plate, a synchronous oil cylinder communicated with the ejection oil cylinder, a synchronous connecting plate connected to the piston rod of the synchronous oil cylinder, a memory adjustment oil cylinder transmission-connected to the synchronous connecting plate, and an adjustment control component communicated with the memory adjustment oil cylinder; The memory adjustment cylinder includes a first piston rod, a first adjustment chamber and a second adjustment chamber, and the adjustment control component includes a first adjustment valve and a second adjustment valve. The first adjustment valve is connected to the first adjustment chamber and the second adjustment chamber respectively, and the second adjustment valve is connected to the second adjustment chamber. The second adjustment valve can adjust the size of the first adjustment chamber, and the first piston rod can move in the first adjustment chamber.
2. The ejector cylinder hydraulic system of a ceramic press according to claim 1, characterized in that: The first regulating valve includes a tank port, a control port, a first outlet, and a second outlet. The regulating control assembly also includes a first control oil circuit, the first control oil circuit is connected to the control port, the first outlet is connected to the first regulating chamber, the second outlet is connected to the second regulating chamber, and the tank port is connected to an external tank.
3. The ejector cylinder hydraulic system of a ceramic press according to claim 2, characterized in that: The memory adjustment cylinder also includes a movable plate, which is separated between the first adjustment chamber and the second adjustment chamber. The first piston rod divides the first adjustment chamber into an upper adjustment chamber and a lower adjustment chamber. The upper adjustment chamber is connected to the second adjustment valve, and the lower adjustment chamber is connected to the first outlet. The lower adjustment chamber and the upper adjustment chamber jointly drive the first piston rod to move, and the second adjustment chamber controls the position of the movable plate.
4. The ejector cylinder hydraulic system of a ceramic press according to claim 1, characterized in that: The movable end of the first piston rod is connected to the synchronous connecting plate, and the synchronous oil cylinder includes a second piston rod and a synchronous oil chamber. One end of the second piston rod is connected to a side of the synchronous connecting plate away from the first piston rod, and the other end of the second piston rod is slidably disposed in the synchronous oil chamber.
5. The ejector cylinder hydraulic system of a ceramic press according to claim 4, characterized in that: A connecting oil passage is provided between the ejection oil cylinder and the synchronous oil cylinder. The ejection oil cylinder comprises an ejection oil chamber. One end of the connecting oil passage is connected to the ejection oil chamber, and the other end of the connecting oil passage is connected to the synchronous oil chamber.
6. The ejector cylinder hydraulic system of a ceramic press according to claim 5, characterized in that: The ejection oil cylinder comprises a third piston rod, the third piston rod is arranged in the ejection oil chamber, and the movable end of the third piston rod is connected to the ejection plate.
7. The ejector cylinder hydraulic system of a ceramic press according to claim 1, characterized in that: The regulating control component further includes a second control oil circuit, which is communicated with the second regulating valve and is used to control the second regulating valve.
8. The ejector cylinder hydraulic system of a ceramic press according to claim 1, characterized in that: The ejection cylinder hydraulic system of the ceramic press also includes a main cylinder, which includes a main piston rod, a piston rod chamber, a piston chamber and a third control oil circuit. The main piston rod is arranged between the piston rod chamber and the piston chamber, and the third control oil circuit is connected to the piston chamber.
9. The ejector cylinder hydraulic system of a ceramic press according to claim 1, characterized in that: The first regulating valve and the second regulating valve are solenoid valves.