Static pressure molding automatic line transfer trolley pushing and buffering cylinder control valve set

Abstract

The utility model discloses a control valve bank for a pushing and buffering cylinder of a transfer trolley of a static pressure molding automatic line, which relates to the field of static pressure molding automatic line equipment and comprises a valve bank shell, a high-pressure ball valve is arranged at one end in the valve bank shell, and a hydraulic oil pipeline is arranged at the bottom of the valve bank shell and penetrates through the valve bank shell. And a proportional reversing valve is arranged on one side of the high-pressure ball valve. Hydraulic oil flow is cut off through the high-pressure ball valve, the proportional reversing valve accurately adjusts the flow and direction of hydraulic oil in a pipeline according to requirements, the hydraulic control one-way valve controls communication of the cavity according to instructions, and the electromagnetic shut-off valve opens an additional channel at a specific moment to adjust and control the oil flow, so that the running path and flow of the hydraulic oil can be finely controlled; the stability of hydraulic oil in each cavity of the vehicle transporting push-and-slow cylinder is ensured, so that the telescopic action of the vehicle transporting push-and-slow cylinder is accurately controlled, the rack is driven to stably and accurately move, and the requirements of various working conditions are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to static pressure molding automatic line equipment field, concretely is a static pressure molding automatic line transfer trolley push buffer cylinder control valve group. BACKGROUND

[0002] In the field of industrial automation production, especially in the static pressure molding automatic line of foundry industry, the precise control of transfer trolley is crucial for improving production efficiency and product quality. With the continuous improvement of production line automation, more stringent requirements are put forward for the running stability, speed regulation accuracy and pressure control accuracy of transfer trolley.

[0003] The current transfer trolley control valve group structure is relatively simple. In terms of hydraulic oil control, more basic valve combination is adopted, the flow control is not accurate enough, and stepless speed regulation cannot be realized. The pressure regulation is single, and cannot be flexibly adjusted according to different working conditions. The connection mode of parts is not stable enough, and is easy to loosen, which affects the overall stability of the system, and lacks effective recycling mechanism in energy utilization.

[0004] Generally, the on-off of hydraulic oil is controlled by ordinary ball valve, and the reversing valve simply switches the oil flow direction to control the operation of trolley push buffer cylinder. The pressure regulation only relies on single overflow valve setting, and lacks fine grading. In the oil return process, there is no special design to make hydraulic oil effectively recycled, and the special working conditions of rod cavity and rodless cavity are not targeted.

[0005] The prior art lacks the precise flow control of hydraulic oil by proportional reversing valve in the present application, cannot realize stepless speed regulation, lacks two-stage pressure regulating valve for two-stage pressure control, has low pressure precision, lacks special oil return pipeline design and main valve one-way valve cooperation to realize hydraulic oil reuse, has great energy waste, causes low production efficiency, and the absence of electromagnetic shut-off valve leads to the problem that the system cannot be effectively guaranteed to run stably in the special working condition of passive retraction of trolley push buffer cylinder. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims at providing a static pressure molding automatic line transfer trolley push buffer cylinder control valve group to solve the technical problems of inaccurate pressure control, unstable operation and low efficiency in the prior art.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a static pressure moulding automatic line transfer trolley push buffer cylinder control valve group, including the valve group shell, high pressure ball valve is arranged in the valve group shell one end, hydraulic oil pipeline is arranged in the valve group shell bottom, hydraulic oil pipeline is arranged through the valve group shell, high pressure ball valve one side is provided with proportional reversing valve, proportional reversing valve is provided with transfer trolley push buffer cylinder main body away from high pressure ball valve side, transfer trolley push buffer cylinder main body is provided with push rod away from proportional reversing valve side, push rod is connected with rack, proportional reversing valve and transfer trolley push buffer cylinder main body between being provided with hydraulic control check valve.

[0008] By adopting the above technical scheme, the control of hydraulic oil is realized, so that the extension and retraction of the transfer trolley push buffer cylinder are controlled.

[0009] The utility model further sets up, proportional reversing valve is provided with first connecting port and second connecting port on one side close to hydraulic control check valve, first connecting port and second connecting port are connected with hydraulic control check valve.

[0010] By adopting the above technical scheme, the control of hydraulic oil is realized, so that the extension and retraction of the transfer trolley push buffer cylinder are controlled.

[0011] The utility model further sets up, proportional reversing valve is provided with first connecting port and second connecting port on one side close to hydraulic control check valve, first connecting port and second connecting port are connected with hydraulic control check valve.

[0012] By adopting the above technical scheme, the control of hydraulic oil is realized, so that the extension and retraction of the transfer trolley push buffer cylinder are controlled.

[0013] The utility model further sets up, proportional reversing valve is provided with first connecting port and second connecting port on one side close to hydraulic control check valve, first connecting port and second connecting port are connected with hydraulic control check valve.

[0014] By adopting the above technical scheme, the control of hydraulic oil is realized, so that the extension and retraction of the transfer trolley push buffer cylinder are controlled.

[0015] The utility model further sets up, proportional reversing valve and transfer trolley push buffer cylinder main body are provided with a pair of first connecting plates on symmetry, a pair of second connecting plates are provided on symmetry on two stage pressure regulating valve, and connecting bore is formed in first connecting plate and second connecting plate.

[0016] By adopting the above technical scheme, the control of hydraulic oil is realized, so that the extension and retraction of the transfer trolley push buffer cylinder are controlled.

[0017] The utility model further sets up, two stage pressure regulating valve is arranged in valve group shell, pilot control port and main connection are provided on two stage pressure regulating valve, pilot control port and main connection are connected through pipeline with car push buffer cylinder main part, second connecting pipe is connected with main pipe check valve and is provided on car push buffer cylinder main part.

[0018] Through adopting above technical scheme, the moving speed of the rack is controlled through twice regulation of the pipeline pressure by the two stage pressure regulating valve.

[0019] The utility model further sets up, the solenoid shut -off valve is provided below the hydraulic control check valve, the pipeline connected with the empty rod cavity of car push buffer cylinder main part and the pipeline connected with the rod cavity of car push buffer cylinder main part are provided on the solenoid shut -off valve.

[0020] Through adopting above technical scheme, the stable operation of the rack is ensured by the solenoid shut -off valve.

[0021] Summarized above, the utility model mainly has following beneficial effects:

[0022] 1, the utility model discloses a high pressure ball valve is cut off hydraulic oil flow, proportional reversing valve is accurately regulated pipeline hydraulic oil flow and direction according to demand, hydraulic control check valve is connected according to instruction control chamber, and the solenoid shut -off valve opens additional passage control oil flow at specific time, thereby can fine control the running path and flow size of hydraulic oil, ensure that car push buffer cylinder each cavity hydraulic oil is stable, thereby accurately control the telescopic action of car push buffer cylinder, and then drive the rack to move stably and accurately, adapt to a variety of working condition demand;

[0023] 2, the utility model discloses that two stage pressure regulating valve is connected to car push buffer cylinder main part, and is regulated according to pressure demand, and main pipe check valve returns excess hydraulic oil to hydraulic oil pipeline, first, second connecting plate and connecting hole firm each component connection, realize accurate setting to push rod pressure through two stage pressure regulating, improve control precision, and the recycling of hydraulic oil improves resource utilization, and firm component connection enhances the overall stability of system, reduces the risk of failure, prolongs the service life of equipment, improves work efficiency. ACCURACY

[0024] Figure 1 It is the overall structure schematic view of the utility model;

[0025] Figure 2 It is the overall structure schematic view of the utility model; Figure 1 It is another view structure schematic view;

[0026] Figure 3 It is the overall structure left side plan view of the utility model;

[0027] Figure 4The overall structure of the utility model is shown in the figure.

[0028] In the figure: 1, high pressure ball valve; 2, hydraulic oil pipeline; 3, proportional reversing valve; 4, hydraulic control check valve; 5, first connecting plate; 6, connecting opening; 7, push rod; 8, rack; 9, two-stage pressure regulating valve; 10, second connecting plate; 11, main pipe check valve; 12, trolley push buffer cylinder main body; 13, first connecting port; 14, second connecting port; 15, first connecting pipe; 16, third connecting port; 17, fourth connecting port; 18, electromagnetic shut-off valve; 19, pilot control port; 20, main connecting port; 21, second connecting pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model and cannot be understood as limiting the utility model.

[0030] The embodiments of the utility model will be described below according to the overall structure of the utility model.

[0031] A static pressure molding automatic line transfer trolley push buffer cylinder control valve group, like Figures 1-4As shown, including valve group shell, the valve group shell is provided with high pressure ball valve 1 in one end, the valve group shell bottom is provided with hydraulic oil pipeline 2, the hydraulic oil pipeline 2 is arranged through the valve group shell, one side of the high pressure ball valve 1 is provided with proportional reversing valve 3, one side of the proportional reversing valve 3 away from the high pressure ball valve 1 is provided with the push-pull cylinder main body 12, the proportional reversing valve 3 and the push-pull cylinder main body 12 are provided with hydraulic control check valve 4, the hydraulic oil is cut off by high pressure ball valve 1, then the hydraulic oil in the pipeline is controlled accurately by proportional reversing valve 3, further, the proportional reversing valve 3 is provided with first connecting port 13 and second connecting port 14 on the side close to the hydraulic control check valve 4, the first connecting port 13 and the second connecting port 14 are connected with the hydraulic control check valve 4, the liquid flow of the first connecting port 13 and the second connecting port 14 is controlled by the hydraulic control check valve 4, the third connecting port 16 is arranged on the side of the push-pull cylinder main body 12 close to the hydraulic control check valve 4 in cooperation with the rodless cavity of the push-pull cylinder main body 12, the fourth connecting port 17 is arranged on the side of the push-pull cylinder main body 12 close to the hydraulic control check valve 4 in cooperation with the rod cavity of the push-pull cylinder main body 12, the third connecting port 16 is communicated with the first connecting port 13 pipeline connected with the hydraulic control check valve 4, the fourth connecting port 17 is communicated with the second connecting port 14 pipeline connected with the hydraulic control check valve 4, by such setting, the communication of the second connecting port 14 and the rod cavity of the push-pull cylinder main body 12 is controlled by the hydraulic control check valve 4, and the connection of the first connecting port 13 and the internal space of the rodless cavity of the push-pull cylinder main body 12 is controlled, so that the push-pull cylinder main body 12 is controlled, further, the push rod 7 is arranged on the side of the push-pull cylinder main body 12 away from the proportional reversing valve 3, the rack 8 is connected with the push rod 7, in this way, the control of the push rod 7 is realized by controlling the rod cavity and the rodless cavity in the push-pull cylinder main body 12, and then the rack movement is controlled.

[0032] On the basis of the above structure, the first connecting pipe 15 is arranged on the side of the proportional reversing valve 3 close to the hydraulic control check valve 4, the first connecting pipe 15 is connected with the hydraulic oil pipeline 2, the main pipe check valve 11 is arranged on the hydraulic oil pipeline 2 in cooperation with the first connecting pipe 15, the purpose that additional hydraulic oil is transported back to the hydraulic oil pipeline 2 from the hydraulic control check valve 4 is realized, and the internal hydraulic oil can be reused.

[0033] A pair of first connecting plates 5 are arranged on the proportional reversing valve 3 and the push-pull cylinder main body 12, a pair of second connecting plates 10 are arranged on the two-stage pressure regulating valve 9, and connecting holes 6 are formed in the first connecting plates 5 and the second connecting plates 10.

[0034] The valve group housing is provided with a two-stage pressure regulating valve 9, the two-stage pressure regulating valve 9 is provided with a pilot control port 19 and a main connection port 20, the pilot control port 19 and the main connection port 20 are connected with the trolley push and slow cylinder body 12 through pipelines, the trolley push and slow cylinder body 12 is provided with a second connecting pipe 21 connected with the main pipe one-way valve 11, the two-stage pressure regulating valve 9 is connected with the trolley push and slow cylinder body 12 to control the hydraulic oil pressure for pushing the push rod 7 in two stages, so that the accuracy of the push rod 7 control is ensured.

[0035] The hydraulic control one-way valve 4 is provided below with an electromagnetic shut-off valve 18, the electromagnetic shut-off valve 18 is provided with a pipeline connected with the trolley push and slow cylinder body 12 empty rod cavity and a pipeline connected with the trolley push and slow cylinder body 12 rod cavity, the pipeline is provided with an additional channel control by the electromagnetic shut-off valve 18, the long-term stable operation of the hydraulic oil in the pipeline is ensured by the electromagnetic shut-off valve 18, so that the stable operation of the rack 8 is ensured.

[0036] In actual use, the pressure hydraulic oil passes through the hydraulic control one-way valve 4 into the trolley push and slow cylinder body 12 empty rod cavity, the push rod 7 is pushed out to drive the rack 8 to move, at this time the other trolley push and slow cylinder body 12 is passively retracted, the trolley push and slow cylinder body 12 oil rod cavity hydraulic oil tank returns to the hydraulic oil pipeline 2 through the proportional reversing valve, the extension speed of the trolley push and slow cylinder body 12 can be infinitely adjusted through the proportional reversing valve 3, when the electromagnet of the proportional reversing valve 3 is energized, the pressure hydraulic oil passes through the hydraulic control one-way valve 4 into the trolley push and slow cylinder body 12 rod cavity, the piston rod is retracted to drive the rack 8 to move, at this time the other trolley push and slow cylinder body 12 is passively extended.

[0037] The trolley push and slow cylinder body 12 empty rod cavity hydraulic oil liquid returns to the hydraulic oil pipeline 2 through the proportional reversing valve 3, the speed of the trolley push and slow cylinder body 12 can be infinitely adjusted through the proportional reversing valve 3, and the extension pressure of the trolley push and slow cylinder body 12 push rod 7 can be adjusted through the high-pressure overflow valve of the two-stage pressure regulating valve 9.

[0038] When the trolley push and slow cylinder body 12 is passively retracted, the proportional reversing valve 3 is de-energized, the leakage electromagnetic shut-off valve 18 electromagnet is energized, the trolley push and slow cylinder body 12 empty rod cavity is communicated with the rod cavity, the electromagnet of the electromagnetic shut-off valve 18 is energized, the empty rod cavity back pressure is adjusted by the low-pressure overflow valve of the two-stage pressure regulating valve 9, the rack 8 is ensured to run stably, at the same time, part of the trolley push and slow cylinder body 12 empty rod cavity hydraulic oil liquid is supplemented to the hydraulic oil rod cavity through the electromagnetic shut-off valve 18, so as to prevent the rod cavity from being empty, when the rod cavity is actively retracted, it can be quickly retracted, and the slow retraction problem is solved.

[0039] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. A static pressure molding automatic line transfer car push buffer cylinder control valve group, comprising a valve group shell, characterized in that: The valve group shell is provided with a high-pressure ball valve (1) at one end, the valve group shell is provided with a hydraulic oil pipeline (2) at the bottom, the hydraulic oil pipeline (2) penetrates through the valve group shell, one side of the high-pressure ball valve (1) is provided with a proportional reversing valve (3), the side, away from the high-pressure ball valve (1), of the proportional reversing valve (3) is provided with a trolley push and slow cylinder body (12), the side, away from the proportional reversing valve (3), of the trolley push and slow cylinder body (12) is provided with a push rod (7), the push rod (7) is connected with a rack (8), a hydraulic control check valve (4) is arranged between the proportional reversing valve (3) and the trolley push and slow cylinder body (12).

2. The push-pull cylinder control valve group of the automatic static pressure molding line transfer vehicle according to claim 1, characterized in that: The proportional reversing valve (3) is provided with a first connecting port (13) and a second connecting port (14) on the side close to the hydraulic control check valve (4), and the first connecting port (13) and the second connecting port (14) are connected with the hydraulic control check valve (4).

3. The push-pull cylinder control valve group of the automatic static pressure molding line transfer vehicle of claim 1, wherein: The side, close to the hydraulic control check valve (4), of the trolley push and slow cylinder body (12) is provided with a third connecting port (16) matched with the rodless cavity of the trolley push and slow cylinder body (12), and the side, close to the hydraulic control check valve (4), of the trolley push and slow cylinder body (12) is provided with a fourth connecting port (17) matched with the rod cavity of the trolley push and slow cylinder body (12).

4. The push-pull cylinder control valve group of claim 3, wherein: The third connecting port (16) is in pipeline communication with the first connecting port (13) connected with the hydraulic control check valve (4), and the fourth connecting port (17) is in pipeline communication with the second connecting port (14) connected with the hydraulic control check valve (4).

5. The push-pull cylinder control valve group of the automatic static pressure molding line transfer vehicle of claim 1, wherein: The proportional reversing valve (3) is provided with a first connecting pipe (15) on the side close to the hydraulic control check valve (4), the first connecting pipe (15) is connected with the hydraulic oil pipeline (2), and the hydraulic oil pipeline (2) is provided with a main pipe check valve (11) matched with the first connecting pipe (15).

6. The push-pull cylinder control valve group of the automatic static pressure molding line transfer vehicle of claim 1, wherein: The valve group shell is provided with a two-stage pressure regulating valve (9), the two-stage pressure regulating valve (9) is provided with a pilot control port (19) and a main connecting port (20), the pilot control port (19) and the main connecting port (20) are connected with the trolley push and slow cylinder body (12) through pipelines, the trolley push and slow cylinder body (12) is provided with a second connecting pipe (21) connected with the main pipe check valve (11), a pair of first connecting plates (5) are symmetrically arranged on the proportional reversing valve (3) and the trolley push and slow cylinder body (12), a pair of second connecting plates (10) are point-symmetrically arranged on the two-stage pressure regulating valve (9), and connecting holes (6) are formed in the first connecting plates (5) and the second connecting plates (10).

7. The push-pull cylinder control valve group of the automatic static pressure molding line transfer vehicle of claim 1, wherein: An electromagnetic shut-off valve (18) is arranged below the hydraulic control check valve (4), and the electromagnetic shut-off valve (18) is provided with a pipeline connected with the rodless cavity of the trolley push and slow cylinder body (12) and a pipeline connected with the rod cavity of the trolley push and slow cylinder body (12).

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