Auxiliary device for water glass sand mold production

Abstract

The utility model discloses an auxiliary device for water glass sand mould making is used, in the process of the water glass sand mould lift sand mould lower mould uses, including auxiliary support frame, the top fixed mounting of auxiliary support frame has sand mould making platform, the bottom sliding assembly of sand mould making platform has lower mould support platform, sand mould lower mould is fixed on lower mould support platform, and platform drive cylinder is connected to lower mould support platform, and platform drive cylinder makes lower mould support platform lift and move below sand mould making platform, and the pressure pipeline on platform drive cylinder is installed with start -stop control device, and the lower mould via hole of avoiding sand mould lower mould is equipped with in sand mould making platform, and the surface of sand mould making platform is located lower mould via hole's outside and is equipped with sand mould upper mould positioning device, the utility model discloses lift and save the labour, and the efficiency is high, and control precision is high and uses nimblely, and it is helpful to guarantee sand mould production efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the technical field of supporting equipment for water glass sand molding, and in particular to an auxiliary device for water glass sand molding. Background Technology

[0002] Water glass sand molds are casting molds formed by using raw sand as the base material, water glass as the binder, and a hardening process. They are also called casting molds and are used to produce various cast steel parts with high environmental protection requirements and high casting quality. Their production process is also environmentally friendly and efficient, so they are widely used in the casting field.

[0003] Water glass sand molds are formed by filling prepared molding sand into a mold and then hardening it. Demolding is a crucial step in the production process. Traditional demolding relies entirely on manual operation, although for large water glass sand molds, lifting equipment such as overhead cranes is used for transfer. When lifting large water glass sand molds, the upper mold is first removed, and then the sand mold is lifted using a lifting hook. During the suspension and lifting of the sand mold, the lack of support or guidance can easily cause swaying and unnecessary contact with the lower mold, greatly increasing the likelihood of damage or deformation. Therefore, current sand mold demolding methods generally suffer from poor control precision and poor operational coordination, directly affecting the production efficiency and quality of sand molds, and indirectly impacting the quality of cast steel parts. Manual operation, on the other hand, suffers from high labor intensity, low efficiency, and difficulty in adapting to the needs of large-scale sand mold production. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an auxiliary device for making water glass sand molds that is labor-saving, efficient, highly precise in control, and flexible in use, which helps to ensure the efficiency and quality of sand mold production.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: an auxiliary device for making water glass sand molds, used for raising and lowering the lower mold of the sand mold during the molding process of water glass sand molds, including an auxiliary support frame, a sand mold making platform fixedly installed at the top of the auxiliary support frame, a lower mold support platform slidably assembled at the bottom of the sand mold making platform, the lower mold of the sand mold fixed on the lower mold support platform, a platform drive cylinder connected to the lower mold support platform, the platform drive cylinder causing the lower mold support platform to move up and down below the sand mold making platform, a start-stop control device installed on the pressure pipeline of the platform drive cylinder, a lower mold through hole through the sand mold making platform to avoid the lower mold of the sand mold, and a sand mold upper mold positioning device arranged on the surface of the sand mold making platform outside the lower mold through hole.

[0006] As a preferred technical solution, the start-stop control device includes a control valve connected to the pressure pipeline, and the control valve is provided with an operating handle.

[0007] As a preferred technical solution, the start-stop control device includes a solenoid valve and a pressure sensor installed on the pressure pipeline. The solenoid valve and the pressure sensor are respectively connected to a PLC controller, and a control switch is provided for use with the solenoid valve.

[0008] As a preferred technical solution, the sand mold upper mold positioning device is configured as two, and is diagonally distributed on the sand mold making platform.

[0009] As a preferred technical solution, the sand mold upper mold positioning device includes a positioning column fixedly installed on the top surface of the sand mold making platform, and the positioning column is configured as a frustum-shaped structure.

[0010] As a preferred technical solution, the bottom of the sand mold making platform is vertically installed with guide columns, the lower mold support platform is slidably fitted onto each of the guide columns, and each of the guide columns is provided with a platform limiting bolt located below the lower mold support platform.

[0011] As a preferred technical solution, the auxiliary support frame is configured as a frame structure, and a reinforcing support beam is installed inside the auxiliary support frame below the sand mold making platform. A drive cylinder mounting plate is fixedly installed on the reinforcing support beam, the cylinder body of the platform drive cylinder is fixedly installed on the drive cylinder mounting plate, and the telescopic rod of the platform drive cylinder passes through the drive cylinder mounting plate and is fixedly connected to the bottom of the lower mold support platform.

[0012] As an improvement to the above technical solution, the auxiliary support frame is provided with support frame lifting hooks arranged around its periphery.

[0013] Due to the adoption of the above technical solution, this utility model has the following beneficial effects: 1. High adaptability: Specifically designed for making water glass sand molds, the lower mold moves down precisely and smoothly under the drive of the platform cylinder during mold opening, avoiding contact between the lower mold and the sand mold, reducing the damage rate of the sand mold, and indirectly ensuring the forming quality of the cast steel parts.

[0014] 2. High efficiency and labor saving: The platform-driven cylinder can be combined with automated control to replace pure manual operation, which greatly improves the efficiency of mold release, reduces the labor intensity of workers, and can better adapt to the production rhythm of large-scale, large-volume sand molds.

[0015] 3. Good stability: The auxiliary support frame has a solid structure and provides stable support. Combined with precise mold-lifting action, it reduces sand mold defects caused by shaking.

[0016] 4. Excellent adjustability: The mold release parameters can be flexibly adjusted through the start-stop control device to adapt to the mold release requirements of different specifications of sand molds, making it highly versatile. Attached Figure Description

[0017] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein: Figure 1 This is a structural schematic diagram of an embodiment of the present utility model; Figure 2 This is a structural schematic diagram of another state of an embodiment of the present utility model; Figure 3 This is a top view of the structure of the sand mold making platform according to an embodiment of the present invention; Figure 4 This is a control connection block diagram of the PLC controller according to an embodiment of this utility model; In the diagram: 1-Water glass sand mold; 2-Lower mold of sand mold; 3-Auxiliary support frame; 4-Sand mold making platform; 5-Anchor bolt; 6-Reinforcing support beam; 7-Positioning column; 8-Lower mold support platform; 9-Guide column; 10-Platform limit bolt; 11-Platform drive cylinder; 12-Drive cylinder mounting plate; 13-Pressure pipeline; 14-Lower mold through hole; 15-Control valve; 16-Operating handle; 17-Support frame hoisting hook. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0019] like Figure 1 , Figure 2 and Figure 3As shown, the auxiliary device for making water glass sand molds involves lifting and supporting the lower mold 2 during the production of water glass sand mold 1 to facilitate molding. During the mold removal process, the formed water glass sand mold 1 is held in place by a hoisting device such as a crane hook, and then the lower mold 2 is lowered to separate the two smoothly. The water glass sand mold 1 can then be removed using the hoisting device. During the mold removal process, the lower mold 2 can descend vertically and move smoothly without contacting the water glass sand mold 1, thus avoiding damage or deformation of the formed water glass sand mold 1. This helps ensure the production efficiency and quality of the sand mold, indirectly guaranteeing the quality of the metal castings produced after the sand mold is used. Since the sand mold requires a certain amount of time to harden, multiple units of this device can be used in conjunction to ensure production efficiency.

[0020] This embodiment specifically includes an auxiliary support frame 3, with a sand mold making platform 4 fixedly installed at its top. The water glass sand mold 1 is made on the sand mold making platform 4. The auxiliary support frame 3 is a frame structure with four legs. Anchor bolts 5 can be installed at the bottom of each leg to adjust the height or angle of the auxiliary support frame 3, ensuring that the sand mold making platform 4 is always horizontal and stable during use. A reinforcing support beam 6 is installed inside the auxiliary support frame 3 below the sand mold making platform 4, making the overall structure of the auxiliary support frame 3 firm and stable, helping to reduce contact with the formed sand mold due to shaking and avoiding defects when the sand mold is demolded.

[0021] In actual use, a sand mold upper die and a matching upper die hoisting device are installed directly above the sand mold making platform 4. The upper die hoisting device is used to raise and lower the sand mold upper die to close and lift it from the lower die 2. The upper die hoisting device is generally an electric hoist, overhead crane, or similar equipment, which is well-known to those skilled in the art and will not be described in detail here. The surface of the sand mold making platform 4 is equipped with sand mold upper die positioning devices. At least two sand mold upper die positioning devices are provided, and when two are provided, they are diagonally distributed on the sand mold making platform 4. These devices are used to quickly position the sand mold upper die during the closing process of the sand mold upper die and the lower die 2. Depending on the specific application, the number of sand mold upper die positioning devices can be appropriately increased, and they can be arranged around the outer periphery of the sand mold upper die during closing. Specifically, the sand mold upper mold positioning device includes a positioning column 7 fixedly installed on the top surface of the sand mold making platform 4, and the positioning column 7 is configured as a frustum-shaped structure, that is, the positioning column 7 is thinner at the top and thicker at the bottom, which has a certain guiding effect on the upper mold when it descends.

[0022] The bottom of the sand mold making platform 4 is slidably fitted with a lower mold support platform 8, and the lower sand mold 2 is fixed to the lower mold support platform 8 by bolts or the like. Specifically, guide columns 9 are vertically installed at the bottom of the sand mold making platform 4, and the lower mold support platform 8 is slidably fitted onto each of the guide columns 9. Each guide column 9 has a platform limiting bolt 10 located below the lower mold support platform 8. The lower mold support platform 8 moves up and down along the guide columns 9, driving the lower sand mold 2 to move synchronously, so as to achieve mold closing or mold opening with the upper sand mold. During this process, the limiting and guiding effect of the guide columns 9 allows the lower mold support platform 8 to move vertically up and down without swaying or moving left or right, thereby avoiding contact with the lower sand mold 2 during mold opening and preventing damage to the sand mold. The platform limiting bolt 10 limits the downward movement of the lower mold support platform 8 to prevent it from descending excessively.

[0023] The lower mold support platform 8 is connected to a platform drive cylinder 11, which causes the lower mold support platform 8 to move up and down below the sand mold making platform 4. In fact, a drive cylinder mounting plate 12 is fixedly installed on the reinforcing support beam 6, and the cylinder body of the platform drive cylinder 11 is fixedly installed on the drive cylinder mounting plate 12. The telescopic rod of the platform drive cylinder 11 passes through the drive cylinder mounting plate 12 and is fixedly connected to the bottom of the lower mold support platform 8. The platform drive cylinder 11 drives the lower mold support platform 8 to synchronously raise and lower the sand mold 2, thereby achieving the closing or opening of the upper mold and separation from the water glass sand mold 1. Using the platform drive cylinder 11 to replace purely manual mold opening operations significantly improves mold opening efficiency, reduces the labor intensity of workers, and is better suited to the production rhythm of large-scale, large-volume sand molds. The platform drive cylinder 11 can be configured as a hydraulic cylinder or a pneumatic cylinder.

[0024] A start / stop control device is installed on the pressure pipeline 13 of the platform drive cylinder 11. A lower mold through hole 14 is provided through the sand mold making platform 4 to avoid the lower mold 2. The shape of the lower mold through hole 14 matches the lower mold 2. Figure 3 The diagram only illustrates one type of lower mold through-hole 14. Its specific shape can be adjusted to match different sand mold lower molds 2, while the sand mold upper mold positioning device is located outside the lower mold through-hole 14. The start / stop control device includes a control valve 15 connected to the pressure pipeline 13. The control valve 15 is equipped with an operating handle 16, which is used to control the working state of the platform drive cylinder 11 in a timely manner, such as extending or retracting, so as to realize the lifting and lowering adjustment of the sand mold lower mold 2.

[0025] like Figure 4As shown, the start / stop control device can also include a solenoid valve and a pressure sensor mounted on the pressure pipeline 13. The solenoid valve and the pressure sensor are respectively connected to a PLC controller, and a control switch is provided for cooperation with the solenoid valve. The PLC controller has a human-machine interface, which can be set according to the model of the water glass sand mold 1. The driving pressure of the pressure source in the pressure pipeline 13, such as high-pressure air or hydraulic oil, is used to control the opening of the solenoid valve and form a feedback system with the pressure sensor to ensure the stability of the drive. The control switch is used to control the start of the platform drive cylinder 11 in a timely manner according to the actual operation. Through the cooperation of the PLC controller, the solenoid valve, and the pressure sensor, the semi-automatic control of the platform drive cylinder 11 can be achieved by operating the control switch alone, which is labor-saving and efficient. Moreover, the PLC controller can adjust the corresponding control parameters according to the model of the sand mold, which has high control accuracy and good flexibility.

[0026] In this embodiment, during the molding process, the platform drive cylinder 11 raises the lower sand mold 2 to a position where it can close with the upper sand mold; then, sand is filled to perform the molding; after hardening and forming, the upper sand mold is first moved upwards to separate from the lower sand mold 2, and then the platform drive cylinder 11 is used to lower the lower sand mold 2 to separate from the sand mold, after which the formed sand mold can be removed. Since different sand molds have different structures, the accompanying drawings of this embodiment only provide a simple illustration of the water glass sand mold 1, the lower sand mold 2, and the lower mold through-hole 14, without showing structural details.

[0027] The auxiliary support frame 3 is equipped with support frame lifting hooks 17 arranged around its perimeter, which can be used in conjunction with cranes to facilitate the position adjustment of the entire auxiliary device. When the structure or area of ​​the auxiliary support frame 3 and the lower mold support platform 4 is large enough, multiple sets of the lower mold support platform 8, the platform drive cylinder 11, the start-stop control device, the lower mold through hole 14, and the sand mold upper mold positioning device can be installed at one time to improve the utilization rate of the site and equipment materials.

[0028] The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An auxiliary device for making water glass sand molds, used to raise and lower the lower mold during the demolding process of water glass sand molds, characterized in that: The system includes an auxiliary support frame, on the top of which a sand mold making platform is fixedly installed. A lower mold support platform is slidably mounted on the bottom of the sand mold making platform. The lower mold is fixed to the lower mold support platform. The lower mold support platform is connected to a platform drive cylinder, which causes the lower mold support platform to move up and down below the sand mold making platform. A start / stop control device is installed on the pressure pipeline of the platform drive cylinder. A lower mold through hole is provided through the sand mold making platform to avoid the lower mold. A sand mold upper mold positioning device is arranged on the surface of the sand mold making platform outside the lower mold through hole.

2. The auxiliary device for making water glass sand molds as described in claim 1, characterized in that: The start / stop control device includes a control valve connected to the pressure pipeline, and the control valve is equipped with an operating handle.

3. The auxiliary device for making water glass sand molds as described in claim 1, characterized in that: The start / stop control device includes a solenoid valve and a pressure sensor installed on the pressure pipeline. The solenoid valve and the pressure sensor are respectively connected to the PLC controller, and a control switch is provided for use with the solenoid valve.

4. The auxiliary device for making water glass sand molds as described in claim 1, characterized in that: The sand mold upper mold positioning device is set to two, and is diagonally distributed on the sand mold making platform.

5. The auxiliary device for making water glass sand molds as described in claim 4, characterized in that: The sand mold upper mold positioning device includes a positioning column fixedly installed on the top surface of the sand mold making platform, and the positioning column is configured as a frustum-shaped structure.

6. The auxiliary device for making water glass sand molds as described in claim 1, characterized in that: The bottom of the sand mold making platform is vertically installed with guide columns, the lower mold support platform is slidably fitted onto each of the guide columns, and each of the guide columns is provided with a platform limiting bolt located below the lower mold support platform.

7. The auxiliary device for making water glass sand molds as described in claim 1, characterized in that: The auxiliary support frame is configured as a frame structure. A reinforcing support beam is installed inside the auxiliary support frame below the sand mold making platform. A drive cylinder mounting plate is fixedly installed on the reinforcing support beam. The cylinder body of the platform drive cylinder is fixedly installed on the drive cylinder mounting plate. The telescopic rod of the platform drive cylinder passes through the drive cylinder mounting plate and is fixedly connected to the bottom of the lower mold support platform.

8. The auxiliary device for making water glass sand molds as described in claim 1, characterized in that: The auxiliary support frame is equipped with support frame lifting hooks arranged around its perimeter.

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