A compactness control system and method for compaction molding on a compaction table

Abstract

The present invention relates to the field of casting technology, and specifically to a compaction control system and method for compaction molding on a compaction table, wherein the method comprises: S1, a control module scans mold information, and matches corresponding compaction parameters according to the mold information; S2, a sand mixing device is started to fill the mold with sand, and the weight of the sand is obtained after the sand filling is completed; S3, the optimal vibration motor data and the optimal spring intake pressure of the air spring are matched according to the sand weight; S4, the compaction table is started to complete the compaction molding. The present invention matches the corresponding compaction parameters according to the mold information, and at the same time matches the optimal vibration motor data and the optimal spring intake pressure of the air spring according to the sand weight, which can well reduce the air retained in the sand, reduce the gaps between the sand, and solve the technical problem of large compaction differences after compaction in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of casting, and in particular to a compactness control system and method applied to compaction molding on a compaction table. Background Art

[0002] Casting technology is the main method to obtain mechanical product blanks. It is an important basic process of the foundry machinery industry and occupies an important position in the national economy. In the casting process, the role of the vibrating table is crucial. The vibrating table is a device mainly used to vibrate materials (such as sand and self-hardening resin sand). It is mainly composed of four parts: a bracket, a platform, a vibration motor and a shock absorber. Vibration can effectively reduce the air retained in the material and reduce the gap between the materials. Compared with manual labor, it has higher work efficiency, better quality, and is easier to operate. At the same time, it has a simple structure and occupies a small area. The traditional self-hardening resin sand vibration molding adopts a fixed frequency and fixed amplitude mode. No matter how large or heavy the sand mold is, the same frequency and amplitude are used for vibration. This will lead to a large difference in compactness. Too high compactness will result in poor yield and air permeability during pouring. Too low compactness will result in insufficient strength and poor dimensional accuracy of the casting. Summary of the invention

[0003] The invention provides a compactness control system and method applied to compaction molding on a compaction table, which solves the technical problem of large compactness difference after compaction in the prior art.

[0004] The basic solution provided by the present invention is: a compactness control method applied to compaction molding on a compaction table, comprising:

[0005] S1, the control module scans the mold information and matches the corresponding compaction parameters according to the mold information;

[0006] S2, starting the sand mixing device to fill the mold with sand, and obtaining the weight of the sand after the sand filling is completed;

[0007] S3, matching the best vibration motor data and the best spring intake pressure of the air spring according to the weight of the sand;

[0008] S4, start the compaction table to complete the compaction modeling.

[0009] The working principle and advantages of the present invention are: in this scheme, sand will be loaded into the mold, and the mold filled with sand will be placed on a vibration table and vibrated by a vibration motor and an air spring. The mold filled with sand and the vibration table are equivalent to a "resonator", and the mass of the mold filled with sand will affect the overall concentrated mass of the "resonator", thereby affecting the movement of the "resonator". On the one hand, the corresponding vibration parameters are matched according to the mold information. For example, the vibration frequency and vibration amplitude are determined according to the mold size and mold weight, so that the vibration frequency and vibration amplitude are matched and adapted to the mold size and mold weight. Compared with the fixed frequency and fixed amplitude mode, the vibration parameters can be adjusted and matched according to the mold information, thereby reducing the difference in compactness during the vibration process; on the other hand, the best vibration motor data is matched according to the sand weight, and the best spring intake pressure of the air spring is matched according to the sand weight. For example, the number of vibration motor operations and the best spring intake pressure of the air spring are determined according to the sand weight, so that the number of vibration motor operations and the best spring intake pressure of the air spring are matched and adapted to the sand weight, ensuring that the air retained in the sand can be well reduced during vibration, and the gaps between the sands can be reduced. In this way, the difference in compactness can be reduced, and the yield and air permeability can be prevented from being deteriorated due to excessive compactness during pouring, thereby avoiding insufficient strength due to insufficient compactness.

[0010] The present invention matches corresponding compaction parameters according to mold information, and matches optimal vibration motor data and optimal spring intake pressure of the air spring according to the weight of sand, which can effectively reduce the air retained in the sand and reduce the gaps between the sands, thereby solving the technical problem of large differences in compaction after compaction in the prior art.

[0011] Further, in S1, the mold information includes mold size and mold weight, and the compaction parameters include compaction frequency and compaction amplitude.

[0012] The beneficial effect is that a larger vibration frequency and vibration amplitude can be used for a larger mold size and mold weight, and a smaller vibration frequency and vibration amplitude can be used for a smaller mold size and mold weight, so as to reduce the difference in compaction during the vibration process.

[0013] Further, in S3, matching the best vibration motor data according to the sand weight includes: determining the working quantity of the first vibration motor and the working quantity of the second vibration motor according to the corresponding relationship between the sand weight and the working quantity of the first vibration motor and the working quantity of the second vibration motor.

[0014] The beneficial effect is that for larger sand weight, more first vibration motors and second vibration motors can be used, and for smaller sand weight, fewer first vibration motors and second vibration motors can be used to reduce the air retained in the sand and reduce the gaps between the sand.

[0015] Further, in S3, the corresponding relationship between the weight of the sand and the number of times the first vibration motor works and the number of times the second vibration motor works is shown in Table 1.

[0016] Table 1 Correspondence between sand weight and the number of working times of the first vibration motor and the second vibration motor

[0017] Number of working first vibration motors (sets) Number of working second vibration motors (sets) Sand weight (tons) 0 2 0～2 0 3 2～3 0 4 3～4 2 0 4～5 2 1 5～6 2 2 6～7 2 3 7～8 4 0 8～10 4 4 10～14

[0018] The power of the first vibration motor is greater than the power of the second vibration motor.

[0019] The beneficial effect is that different numbers of combinations of the first vibration motor and the second vibration motor can be selected according to different sand weights, ensuring that the first vibration motor and the second vibration motor can provide a good vibration compaction effect for the sand.

[0020] Furthermore, the power of the first vibration motor is 1.5 kW, and the power of the second vibration motor is 1.1 kW.

[0021] The beneficial effect is that selecting such a power can adapt to most compaction scenarios to meet actual needs.

[0022] Furthermore, the total number of the first vibration motors and the total number of the second vibration motors are both four.

[0023] The beneficial effect is that such a number is convenient for arrangement and installation.

[0024] Further, in S3, matching the optimal spring intake pressure of the air spring according to the weight of the sand includes: determining the optimal spring intake pressure of the air spring according to the corresponding relationship between the weight of the sand and the optimal spring intake pressure, wherein the corresponding relationship between the weight of the sand and the optimal spring intake pressure is shown in Table 2.

[0025] Table 2 Correspondence between sand weight and optimal spring intake pressure

[0026]

[0027]

[0028] The air intake pressure range of the air spring is 0.4-0.8 MPa.

[0029] The beneficial effect is that selecting such an intake pressure range can provide a wide range of vibration effects.

[0030] Furthermore, the control module adopts a PLC control system.

[0031] The beneficial effects are: easy to implement, simple to operate and low cost.

[0032] Based on the above disclosed compactness control method for compaction molding on a compaction table, the present invention further discloses a compactness control system for compaction molding on a compaction table, comprising: a compaction table for compaction according to compaction parameters, optimal vibration motor data, and optimal spring intake pressure; a sand mixing device for filling sand into a mold;

[0033] It also includes a control module, which is used to scan mold information and match corresponding compaction parameters according to the mold information. The control module is used to obtain sand weight and match optimal vibration motor data and optimal spring intake pressure of the air spring according to the sand weight.

[0034] The working principle and advantages of the present invention are as follows: In this scheme, there are two improvements: on the one hand, the corresponding vibration parameters are matched according to the mold information, for example, the vibration frequency and vibration amplitude are determined according to the mold size and mold weight, so that the vibration frequency and vibration amplitude are matched and adapted to the mold size and mold weight, thereby reducing the difference in compactness during the vibration process; on the other hand, the optimal vibration motor data and the optimal spring intake pressure of the air spring are matched according to the sand weight, for example, the number of vibration motor workings and the optimal spring intake pressure are determined according to the sand weight, so that the number of vibration motor workings and the optimal spring intake pressure of the air spring are matched and adapted to the sand weight, ensuring that the air retained in the sand can be reduced during vibration, and the gaps between the sands can be reduced. In this way, the difference in compactness can be reduced, and it is prevented that the compactness is too high during pouring, resulting in poor yield and air permeability, and the compactness is too low, resulting in insufficient strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The present invention is a flow chart of an embodiment of a compactness control method applied to compaction modeling on a compaction table. DETAILED DESCRIPTION

[0036] The following is a further detailed description through specific implementation methods:

[0037] Example 1

[0038] The embodiment is basically as shown in the attached Figure 1 As shown, a compactness control method applied to compaction molding on a compaction table comprises:

[0039] S1. The control module scans the mold information and matches the corresponding vibration parameters according to the mold information. The mold information includes the mold size and the mold weight, and the vibration parameters include the vibration frequency and the vibration amplitude. In this way, a larger vibration frequency and vibration amplitude can be used for a larger mold size and mold weight, and a smaller vibration frequency and vibration amplitude can be used for a smaller mold size and mold weight, so as to reduce the difference in compaction during the vibration process. The control module adopts a PLC control system, which is easy to implement, simple to operate, and low in cost.

[0040] S2. Start the sand mixing device to fill the mold with sand, and obtain the weight of the sand after the sand filling is completed.

[0041] S3. Match the best vibration motor data and the best spring intake pressure of the air spring according to the weight of the sand.

[0042] In this embodiment, the matching of the best vibration motor data according to the sand weight includes: determining the working number of the first vibration motor and the working number of the second vibration motor according to the corresponding relationship between the sand weight and the working number of the first vibration motor and the working number of the second vibration motor, that is, for a larger sand weight, a larger working number of the first vibration motor and the working number of the second vibration motor can be used, and for a smaller sand weight, a smaller working number of the first vibration motor and the working number of the second vibration motor can be used to reduce the air retained in the sand and reduce the gaps between the sand. The corresponding relationship between the sand weight range, the working number of the first vibration motor, and the working number of the second vibration motor is shown in Table 1.

[0043] Table 1 Corresponding relationship between the sand weight, the working number of the first vibration motor, and the working number of the second vibration motor

[0044] Number of first vibration motors working (sets) Number of working second vibration motors (sets) Sand weight (tons) 0 2 0～2 0 3 2～3 0 4 3～4 2 0 4～5 2 1 5～6 2 2 6～7 2 3 7～8 4 0 8～10 4 4 10～14

[0045] Among them, the power of the first vibration motor is greater than the power of the second vibration motor, so that different numbers of combinations of the first vibration motor and the second vibration motor can be selected for different sand weights to ensure that the first vibration motor and the second vibration motor can provide a good compaction effect for the sand. The power of the first vibration motor is 1.5kw, and the power of the second vibration motor is 1.1kw. Selecting such a power can adapt to most compaction scenarios to meet actual needs; the total number of the first vibration motors and the total number of the second vibration motors are both four, and such a number is convenient for layout and installation. The optimal spring intake pressure of the air spring is matched according to the weight of the sand, that is, according to the corresponding relationship between the weight of the sand and the optimal spring intake pressure, the optimal spring intake pressure of the air spring is determined. The corresponding relationship between the weight of the sand and the optimal spring intake pressure is shown in Table 2.

[0046] Table 2 Correspondence between sand weight and optimal spring intake pressure

[0047]

[0048] The air intake pressure range of the air spring is 0.4-0.8 MPa, and generally does not exceed 0.7 MPa. Selecting such an air intake pressure range can provide a wide range of vibration effects.

[0049] S4, start the compaction table to complete the compaction modeling.

[0050] In this embodiment, the following two examples are given for simple explanation:

[0051] Case A: The mold size is 2200mm×1700mm×300mm, and the mold weight is 1907kg. This information is stored in the QR code, which is attached to the mold. The PLC system scans the QR code to call out the compaction frequency of 40Hz and the compaction amplitude of 0.70mm corresponding to the mold. The sand mixing device is started to fill sand and obtain the weight of the sand. If the weight of the sand is 1.5t, then according to Table 1, the number of working first vibration motors is 0 and the number of working second vibration motors is 2, that is, 2 1.1kw vibration motors are selected to work. According to Table 2, the air spring intake pressure is selected as 0.4Mpa, and the compaction table is started to compact. 300 sand molds of 2200mm×1700mm×300mm are prepared. The obtained sand molds are of high quality, short molding time, and no manual operation is required.

[0052] Case B: The mold size is 1400mm×1400mm×300mm, and the mold weight is 999.6kg. This information is also stored in the QR code, and the QR code is also affixed to the mold. The PLC system scans the QR code to call out the corresponding compaction frequency of 25Hz and compaction amplitude of 0.35mm. The sand mixing device is started to fill sand and obtain the weight of the sand. If the weight of the sand is 2.5t, then according to Table 1, the number of working first vibration motors is 0 and the number of working second vibration motors is 3, that is, 3 1.1kw vibration motors are selected to work. According to Table 2, the air spring intake pressure is selected as 0.4Mpa, and the compaction table is started to compact. 200 sand molds of 1400mm×1400mm×300mm are prepared. The obtained sand molds are of high quality, short molding time, and no manual operation is required.

[0053] In this embodiment, sand will be loaded into the mold, and the mold filled with sand will be placed on a vibration table and vibrated by a vibration motor and an air spring. The mold filled with sand and the vibration table are equivalent to a "resonator". The mass of the mold filled with sand will affect the overall concentrated mass of the "resonator", thereby affecting the movement of the "resonator". On the one hand, the corresponding compaction parameters are matched according to the mold information. For example, the compaction frequency and compaction amplitude are determined according to the mold size and mold weight, so that the compaction frequency and compaction amplitude are matched and adapted to the mold size and mold weight. Compared with the fixed frequency and fixed amplitude mode, the compaction parameters can be adjusted and matched according to the mold information, thereby reducing the difference in compaction degree during the compaction process; on the other hand, the optimal vibration motor data is matched according to the sand weight, and the optimal spring intake pressure of the air spring is matched according to the sand weight, so that the working number of the vibration motor and the optimal spring intake pressure of the air spring are matched and adapted to the sand weight, ensuring that the air retained in the sand can be well reduced during vibration, reducing the gaps between the sands; this can reduce the difference in compaction degree and prevent excessive compaction during pouring from resulting in poor yield and air permeability, and excessive compaction from resulting in insufficient strength.

[0054] Example 2

[0055] The only difference from Example 1 is that, based on the compactness control method for compaction molding on a compaction table disclosed in the above embodiment, a compactness control system for compaction molding on a compaction table is also disclosed, including: a compaction table for compaction according to compaction parameters, optimal vibration motor data, and optimal spring intake pressure; a sand mixing device for filling sand into a mold; and a control module for scanning mold information and matching corresponding compaction parameters according to mold information, and for obtaining sand weight and matching optimal vibration motor data and optimal spring intake pressure of an air spring according to the weight of sand. In this embodiment, on the one hand, the corresponding compaction parameters are matched according to mold information to reduce the difference in compaction during compaction; on the other hand, the optimal vibration motor data and optimal spring intake pressure of an air spring are matched according to the weight of sand to ensure that the air retained in the sand can be reduced during compaction, and the gaps between the sands can be reduced, so that the compaction difference can be reduced, and the yield and air permeability can be prevented from being deteriorated due to excessive compaction during pouring, and insufficient strength can be avoided due to excessive compaction.

[0056] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A compactness control method for compaction molding on a compaction table, characterized in that: include: S1, the control module scans the mold information and matches the corresponding compaction parameters according to the mold information; S2, starting the sand mixing device to fill the mold with sand, and obtaining the weight of the sand after the sand filling is completed; S3, matching the best vibration motor data and the best spring intake pressure of the air spring according to the weight of the sand; S4, start the vibration compaction table to complete the vibration compaction modeling; In S1, the mold information includes mold size and mold weight, and the compaction parameters include compaction frequency and compaction amplitude; In S3, matching the best vibration motor data according to the sand weight includes: determining the working number of the first vibration motor and the working number of the second vibration motor according to the corresponding relationship between the sand weight and the working number of the first vibration motor and the working number of the second vibration motor; the power of the first vibration motor is greater than the power of the second vibration motor.

2. The compactness control method for compaction molding on a compaction table according to claim 1, characterized in that: In S3, the corresponding relationship between the weight of the sand and the number of times the first vibration motor works and the number of times the second vibration motor works is shown in Table 1. Table 1 Correspondence between sand weight and the number of working times of the first vibration motor and the second vibration motor 。 3. The compactness control method for compaction molding applied to a compaction table as claimed in claim 2, characterized in that: The power of the first vibration motor is 1.5 kW, and the power of the second vibration motor is 1.1 kW.

4. The compactness control method for compaction molding on a compaction table according to claim 1, characterized in that: The total number of the first vibration motors and the total number of the second vibration motors are both four.

5. The compactness control method for compaction molding on a compaction table according to claim 1, characterized in that: In S3, matching the optimal spring intake pressure of the air spring according to the weight of the sand includes: determining the optimal spring intake pressure of the air spring according to the corresponding relationship between the weight of the sand and the optimal spring intake pressure, wherein the corresponding relationship between the weight of the sand and the optimal spring intake pressure is shown in Table 2. Table 2 Correspondence between sand weight and optimal spring intake pressure The air intake pressure range of the air spring is 0.4-0.8 MPa.

6. The compactness control method for compaction molding on a compaction table according to claim 5, characterized in that: The control module adopts a PLC control system.

7. A compactness control system applied to compaction molding on a compaction table, comprising: The vibration table is used to perform vibration according to the vibration parameters, the optimal vibration motor data, and the optimal spring air intake pressure; the sand mixing device is used to fill the sand into the mold; It is characterized in that it also includes a control module, which is used to scan mold information and match corresponding compaction parameters according to the mold information, and the control module is used to obtain sand weight and match optimal vibration motor data and optimal spring intake pressure of the air spring according to the sand weight.

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