Hydraulic device for molding machine

Abstract

The utility model discloses a hydraulic device for a molding machine. An oil level indicator used for being matched with a hydraulic oil tank is further arranged on a machine box. A hydraulic pump is installed on the top of the machine box through a pump body support, the driving shaft is vertically arranged above the hydraulic oil tank, a sealing device used for preventing liquid leakage is arranged between the driving shaft and the hydraulic oil tank, and the driving motor can drive the driving shaft to rotate through a gear set. A hydraulic control module used for controlling the flow direction and flow of hydraulic oil, an oil pressure valve, an oil inlet valve and an oil outlet valve are further arranged on the top of the machine box. The driving motor is horizontally arranged, driving force of horizontal rotation is converted into vertical driving force through the gear set, and the horizontally-installed driving motor operates more stably; meanwhile, the hydraulic pump is suspended through the pump body support, direct contact between the driving motor and the case is effectively avoided, and the heat dissipation performance of the driving motor can be improved; and meanwhile, the hydraulic control module adopts a pressure control mechanism and a direction control mechanism consisting of a plurality of valves, so that the flow direction and the pressure of hydraulic oil can be accurately controlled, and required force and movement can be realized for a hydraulic cylinder of the molding machine.

Description

Technical Field

[0001] The utility model relates to the field of molding machines, in particular to a hydraulic device used for molding machines. Background Art

[0002] Hydraulic devices play an important role in the existing sand molding machines. Hydraulic devices are mainly used to provide stable pressure and force in sand molding machines to achieve sand compaction, mold fixation and other related operations. Specifically, the hydraulic device provides the required pressure through the pressure of hydraulic oil to make the sand evenly compacted in the mold to ensure the quality of the sand mold; the hydraulic device can achieve precise control of the opening and closing, lifting, and rotation of the mold by controlling valves and hydraulic cylinders and other components; the hydraulic device can fix the mold through hydraulic cylinders and other components to ensure the stability and precision of the mold during the production process.

[0003] Hydraulic devices can provide high pressure and force, which are suitable for the needs of uniform compaction of sand materials and stable fixation of molds. Hydraulic devices can achieve precise control of mold movements by controlling components such as valves and hydraulic cylinders, thereby improving the accuracy and consistency of sand mold making. Hydraulic devices are usually composed of durable hydraulic components with high reliability and stability. Hydraulic devices play an important role in sand mold molding machines, providing stable pressure and force and achieving precise control. However, it is necessary to pay attention to the disadvantages of high equipment cost and complex maintenance, and regular inspection and maintenance are required during use to ensure safe operation and normal operation of the equipment. Utility Model Content

[0004] In view of the above problems, the utility model aims to provide a hydraulic device for a molding machine.

[0005] To achieve the technical purpose, the solution of the utility model is: a hydraulic device for a molding machine, comprising a hydraulic oil tank and an oil cooler arranged in a chassis, and an oil level indicator for the hydraulic oil tank is also arranged on the chassis;

[0006] A hydraulic pump is installed on the top of the chassis through a pump body bracket. The hydraulic pump is composed of a drive motor, a gear set, and a drive shaft. The drive shaft is vertically arranged above the hydraulic oil tank. A sealing device for preventing liquid leakage is arranged between the drive shaft and the hydraulic oil tank. The drive motor can drive the drive shaft to rotate through the gear set.

[0007] The top of the chassis is also provided with a hydraulic control module, an oil pressure valve, an oil inlet valve and an oil outlet valve for controlling the flow direction and flow rate of the hydraulic oil.

[0008] Preferably, the hydraulic control module includes a pressure control mechanism and a directional control mechanism, the pressure control mechanism includes one or more of a relief valve, a solenoid relief valve, a unloading relief valve, a sequence valve, a balancing valve, a pressure reducing valve, a pressure relay, and a pressure gauge protection valve, and the flow control mechanism includes one or more of a throttle valve, a stroke throttle valve, a speed regulating valve, a relief throttle valve, and a diversion and combining valve.

[0009] Preferably, the pump body bracket is composed of a connecting plate, a support plate and a support seat. Two support seats are fixedly installed under the support plate. The support seat is fixed to the top of the chassis by bolts. Connecting plates are fixedly installed on both support plates, and the connecting plates are welded on both sides of the hydraulic pump.

[0010] Preferably, the chassis is also provided with an inspection hatch corresponding to the hydraulic oil tank.

[0011] Preferably, four supporting feet are provided at the bottom of the chassis, and an oil drain valve is provided below the bottom of the hydraulic oil tank.

[0012] Preferably, the chassis is also provided with an oil temperature indicating mechanism, and the oil temperature indicating mechanism is located on one side of the oil inlet valve and the oil outlet valve.

[0013] Preferably, two drain outlets are provided on the right side of the chassis for easy cleaning of the hydraulic oil tank, and sealing covers are connected to the outer sides of the drain outlets via flanges and bolts.

[0014] The beneficial effects of the utility model are as follows: the drive motor of the present application is horizontally arranged, and the horizontally rotating drive force is converted into a vertical drive force through a gear set, so that the horizontally installed drive motor runs more stably; at the same time, the hydraulic pump is suspended in the air by using a pump body bracket, which effectively avoids direct contact between the drive motor and the chassis, and can improve the heat dissipation performance of the drive motor; at the same time, the hydraulic control module adopts a pressure control mechanism and a direction control mechanism composed of multiple valves, which can accurately control the flow direction and pressure of the hydraulic oil, so as to realize the required force and movement for the hydraulic cylinder of the molding machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is one of the three-dimensional diagrams of the utility model;

[0016] Figure 2 This is the second stereogram of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model from a top view;

[0018] Figure 4 It is a schematic structural diagram of the side view of the utility model. DETAILED DESCRIPTION

[0019] The utility model of the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In order to clearly and completely describe the technical solution, the following embodiments are selected for illustration; based on the contents recorded in this application, other embodiments obtained without creative work are all within the scope of protection of this utility model.

[0020] In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom" and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of clearly describing the present embodiment, rather than indicating or implying that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0021] like Figure 1-4 As shown, the specific embodiment of the utility model is a hydraulic device for a molding machine, wherein a hydraulic oil tank and an oil cooler are installed in a chassis 1, and an oil level indicator 3 for the hydraulic oil tank is also provided on the chassis 1. In order to facilitate installation and heat dissipation requirements, a hydraulic pump 5 is installed on the top of the chassis 1 through a pump body bracket 4; the pump body bracket 4 is composed of a connecting plate 401, a support plate 402 and a support seat 403, two support seats 403 are fixedly installed under the support plate 402, and the support seat 403 is fixed to the top of the chassis 1 by bolts, and connecting plates 401 are fixedly installed on both support plates 402, and the connecting plates 401 are welded on both sides of the hydraulic pump 5, and sufficient space is reserved between the hydraulic pump 5 and the top of the chassis to ensure heat dissipation.

[0022] In order to drive better, the hydraulic pump 5 is composed of a driving motor 501, a gear set 502, and a driving shaft 503. The driving shaft 503 is vertically arranged above the hydraulic oil tank. A sealing device 504 is arranged between the driving shaft 503 and the hydraulic oil tank to prevent liquid leakage. The driving motor 501 can drive the driving shaft 503 to rotate through the gear set 502, and the gear set 502 can convert the horizontal rotation force into vertical rotation; the top of the chassis 1 is also provided with a hydraulic control module 6, an oil pressure valve 7, an oil inlet valve 8 and an oil outlet valve 9 for controlling the flow direction and flow of the hydraulic oil.

[0023] In order to better promote the hydraulic cylinder of the molding machine to achieve the required force and movement (drive the upper and lower pressure plates to move), the hydraulic control module 6 includes a pressure control mechanism and a direction control mechanism. The pressure control mechanism includes one or more of a relief valve, an electromagnetic relief valve, a unloading relief valve, a sequence valve, a balancing valve, a pressure reducing valve, a pressure relay, and a pressure gauge protection valve. The flow control mechanism includes one or more of a throttle valve, a stroke throttle valve, a speed regulating valve, a relief throttle valve, and a diversion-collection valve. The chassis 1 is also provided with an inspection hatch 2 corresponding to the hydraulic oil tank. Four supporting feet 101 are provided at the bottom of the chassis 1, and an oil drain valve 10 is provided below the bottom of the hydraulic oil tank. The chassis 1 is also provided with an oil temperature indicating mechanism 11, which is located on one side of the oil inlet valve 8 and the oil outlet valve 9. Two drain outlets 12 are also provided on the right side of the chassis 1 for easy cleaning of the hydraulic oil tank, and a sealing cover 13 is connected to the outside of the drain outlet 12 through a flange and bolts.

[0024] When in use, the hydraulic pump draws hydraulic oil from the hydraulic oil tank and pressurizes it, and then controls the flow direction and pressure of the hydraulic oil through the hydraulic control module, and finally pushes the hydraulic cylinder of the molding machine to achieve the required force and movement; the pressure and flow provided by the hydraulic pump depend on the needs of the hydraulic system, and the control signal of the hydraulic valve is adjusted according to the requirements of the working process. When maintaining and replacing the hydraulic oil, turn off the power supply and ensure that the hydraulic device is in a stopped state. Open the drain valve of the device and drain the old oil into a suitable container. Use clean hydraulic oil or a special system cleaning agent to circulate and flush the hydraulic system to remove residual old oil and impurities. The cleaning fluid can be flowed through the system by opening the drain port of the device. Close the drain port and drain valve, and add new hydraulic oil to the hydraulic oil tank of the hydraulic device; according to the requirements of the hydraulic device and the capacity of the hydraulic oil, gradually add new oil, while observing the oil level and pressure.

[0025] The drive motor of the present application is horizontally arranged, and the horizontal rotating drive force is converted into vertical drive force through a gear set, so that the horizontally installed drive motor runs more stably; at the same time, the hydraulic pump is suspended in the air by a pump body bracket, which effectively avoids direct contact between the drive motor and the chassis, and can improve the heat dissipation performance of the drive motor; at the same time, the hydraulic control module adopts a pressure control mechanism and a direction control mechanism composed of multiple valves, which can accurately control the flow direction and pressure of the hydraulic oil, so as to realize the required force and movement for the hydraulic cylinder of the molding machine.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A hydraulic device for a molding machine, characterized in that: It includes a hydraulic oil tank and an oil cooler arranged in the chassis, and the chassis is also provided with an oil level indicator for the hydraulic oil tank; A hydraulic pump is installed on the top of the chassis through a pump body bracket. The hydraulic pump is composed of a drive motor, a gear set, and a drive shaft. The drive shaft is vertically arranged above the hydraulic oil tank. A sealing device for preventing liquid leakage is arranged between the drive shaft and the hydraulic oil tank. The drive motor can drive the drive shaft to rotate through the gear set. The top of the chassis is also provided with a hydraulic control module, an oil pressure valve, an oil inlet valve and an oil outlet valve for controlling the flow direction and flow rate of the hydraulic oil.

2. The hydraulic device for a molding machine according to claim 1, characterized in that: The hydraulic control module includes a pressure control mechanism and a directional control mechanism. The pressure control mechanism includes one or more of a relief valve, an electromagnetic relief valve, a unloading relief valve, a sequence valve, a balancing valve, a pressure reducing valve, a pressure relay, and a pressure gauge protection valve. The flow control mechanism includes one or more of a throttle valve, a stroke throttle valve, a speed regulating valve, a relief throttle valve, and a diversion and combining valve.

3. The hydraulic device for a molding machine according to claim 1, characterized in that: The pump body bracket is composed of a connecting plate, a supporting plate and a supporting seat. Two supporting seats are fixedly installed under the supporting plate. The supporting seat is fixed to the top of the chassis by bolts. Connecting plates are fixedly installed on both supporting plates, and the connecting plates are welded to both sides of the hydraulic pump.

4. The hydraulic device for a molding machine according to claim 1, characterized in that: The chassis is also provided with an inspection hatch corresponding to the hydraulic oil tank.

5. The hydraulic device for a molding machine according to claim 1, characterized in that: Four supporting feet are arranged at the bottom of the chassis, and an oil drain valve is arranged below the bottom of the hydraulic oil tank.

6. The hydraulic device for a molding machine according to claim 1, characterized in that: The chassis is also provided with an oil temperature indicating mechanism, which is located on one side of the oil inlet valve and the oil outlet valve.

7. The hydraulic device for a molding machine according to claim 1, characterized in that: The right side of the chassis is also provided with two drain outlets for easy cleaning of the hydraulic oil tank, and the outer sides of the drain outlets are connected with sealing covers through flanges and bolts.

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