Molding sand moisture detection equipment

Abstract

The utility model relates to the technical field of molding sand moisture detection equipment, in particular to molding sand moisture detection equipment. Comprising a base, a heating box, a weighing mechanism and a switching mechanism, the weighing mechanism and the heating box are linearly arranged on the base front and back, and the switching mechanism is further installed on the heating box and used for moving and switching a material carrying disc between a heating station of the heating box and a weighing station of the weighing mechanism. The switching mechanism comprises a switching cylinder, a connecting plate, a moving shaft and a placing plate; the switching air cylinder is installed on the rear side wall of the heating box, a piston rod of the switching air cylinder is connected with the connecting plate, the moving shafts are symmetrically arranged at the left end and the right end of the connecting plate, and the moving shafts are inserted into the heating box in a sliding mode. According to the utility model, the problem that the measurement error of the weighing sensor element is increased or the weighing sensor element is damaged due to the heating temperature is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of molding sand moisture detection equipment, in particular to molding sand moisture detection equipment. Background Art

[0002] The moisture content of molding sand is one of the important performance indicators of wet molding sand. The control of the moisture content of molding sand is directly related to the quality of castings. Real-time online control of the moisture content of molding sand can meet the process requirements of molding sand preparation and effectively ensure the quality of casting products. For example, a molding sand moisture meter with the patent document publication number CN209878533U can effectively reduce heat loss through the coordination of the outer cover and the material table, and the coordination of the inner cover and the heating table. The temperature rises quickly during the heating process, and the molding sand can be dried in a short time, and the rapid detection can be completed to obtain the moisture content. However, in the above technical solution, the weighing structure and the heating structure are arranged in close proximity. Due to the excessively high heating temperature, the measurement error of the weighing sensor element will become larger or directly cause damage.

[0003] Therefore, in view of the above technical defects, it is urgent to develop a molding sand moisture detection equipment to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a molding sand moisture detection device to solve the problem that the measurement error of the weighing sensor element becomes larger or is damaged due to the above-mentioned heating temperature.

[0005] In order to solve the above technical problems, the utility model provides a molding sand moisture detection device, including: a base, a heating box, a weighing mechanism and a switching mechanism; the weighing mechanism and the heating box are linearly arranged on the base in a front-to-back manner, and the heating box also includes the switching mechanism installed on the heating box, which is used to move and switch the loading plate between the heating station of the heating box and the weighing station of the weighing mechanism.

[0006] Preferably, the switching mechanism includes: a switching cylinder, a connecting plate, a movable shaft and a placement plate; the switching cylinder is installed on the rear side wall of the heating box, the piston rod of the switching cylinder is connected to the connecting plate, the movable shaft is symmetrically provided at the left and right ends of the connecting plate, the movable shaft is slidably plugged into the heating box, and the placement plate is provided at the front end of the movable shaft, and the placement plate is used to place the loading tray.

[0007] Preferably, it also includes a passage opening, which is opened on the front side wall of the heating box and is used for the placement plate to pass through.

[0008] Preferably, the placement plate includes a mounting plate and a U-shaped groove plate; the mounting plate is used to be connected to the movable shaft, and the U-shaped groove plate is provided at the rear end of the mounting plate.

[0009] Preferably, the heating box further comprises a plurality of carbon fiber heating tubes arranged therein, and the carbon fiber heating tubes are arranged in a spiral disc structure.

[0010] Preferably, the number of the carbon fiber heating tubes arranged is at least two, which are arranged on the upper and lower sides of the heating station respectively.

[0011] Preferably, the weighing mechanism comprises: a lifting cylinder, a weighing sensor, a thermal insulation pad and a lifting tray; the lifting cylinder is installed on the base, the weighing sensor is provided at the piston rod end of the lifting cylinder, and the thermal insulation pad and the lifting tray are provided on the weighing sensor in sequence.

[0012] Preferably, it also includes a sealing plate, which is embedded on the movable shaft in the heating box and forms a sealed heating chamber when it abuts against the channel opening.

[0013] Preferably, the mounting plate further comprises an embedded sealing strip, which forms a sealed heating chamber when it abuts against the channel opening.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model can switch the position of the loading plate back and forth during weighing and heating by setting the switching mechanism, so that the weighing mechanism and the heating structure are arranged far apart from each other, avoiding the existing weighing mechanism and the heating structure being in contact or arranged in close proximity, which may cause large measurement errors or even damage to the weighing sensor elements due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural diagram of a molding sand moisture detection device provided by the utility model.

[0017] Figure 2 This is a rear structural diagram of a molding sand moisture detection device provided by the utility model.

[0018] Figure 3 The utility model provides a cross-sectional structural diagram of a molding sand moisture detection device.

[0019] Figure 4 This is a structural diagram of the placement plate provided by the utility model.

[0020] Figure 5 The figure is a cross-sectional structural diagram of a molding sand moisture detection device with a sealing plate.

[0021] In the figure: 1-base, 2-heating box, 21-channel opening, 3-weighing mechanism, 31-lifting cylinder, 32-weighing sensor, 33-lifting tray, 4-switching mechanism, 41-switching cylinder, 42-connecting plate, 43-moving axis, 44-placing plate, 441-mounting plate, 442-U-shaped groove plate, 5-sealing plate, 6-PLC control panel, 7-loading tray. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will become clearer. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.

[0023] like Figure 1-5 As shown, the embodiment of the utility model specifically provides a molding sand moisture detection device, including: a base 1, a heating box 2, a weighing mechanism 3 and a switching mechanism 4; the weighing mechanism 3 and the heating box 2 are linearly arranged on the base 1, and the heating box 2 also includes a switching mechanism 4 installed, which is used to move and switch the loading plate 7 between the heating station of the heating box 2 and the weighing station of the weighing mechanism 3. Through the setting of the above-mentioned switching mechanism 4, the position of the loading plate 7 during weighing and heating can be switched back and forth, so that the weighing mechanism 3 and the heating structure are far away, avoiding the existing weighing mechanism 3 and the heating structure being in contact or set at a close distance, and causing a large measurement error or even damage to the weighing sensor 32 element due to excessive temperature.

[0024] The switching mechanism 4 includes: a switching cylinder 41, a connecting plate 42, a moving shaft 43 and a placing plate 44; the switching cylinder 41 is installed on the rear side wall of the heating box 2, the piston rod of the switching cylinder 41 is connected to the connecting plate 42, the left and right ends of the connecting plate 42 are symmetrically provided with moving shafts 43, the moving shaft 43 is slidably plugged into the heating box 2, and the front end of the moving shaft 43 is provided with a placing plate 44, and the placing plate 44 is used to place the carrying material tray 7. When the above-mentioned switching mechanism 4 is used, the switching cylinder 41 can be controlled to extend, and the material tray 7 at the weighing station can be driven to move toward the heating box 2 until the material tray 7 is moved to the heating station, that is, when the above-mentioned mounting plate 441 is in contact with the channel opening 21, a sealed space is formed for the heating box 2. At this time, the carbon fiber heating tube in the heating box 2 can be controlled to heat, and the water content of the molding sand in its carrying tray 7 can be heated and evaporated. After heating for a certain period of time, such as 2-5 minutes, the switching cylinder 41 is controlled to shorten the operation, and the loading plate 7 at the heating station is moved to the weighing station, and the molding sand after moisture heating is weighed again.

[0025] In order to form an avoidance space for the passage of the material carrier 7, a passage opening 21 is also provided. The passage opening 21 is provided on the front side wall of the heating box 2, and the passage opening 21 is used for the placement plate 44 to pass through.

[0026] The placement plate 44 includes a mounting plate 441 and a U-shaped groove plate 442 ; the mounting plate 441 is used to be connected to the moving shaft 43 , and a U-shaped groove plate 442 is provided at the rear end of the mounting plate 441 , and the U-shaped groove plate 442 is used to place the loading tray 7 .

[0027] The heating box 2 also includes a plurality of carbon fiber heating tubes arranged therein to improve the heating efficiency, and the carbon fiber heating tubes are arranged in a spiral disc structure to further expand the heating area.

[0028] There are at least two carbon fiber heating tubes arranged, which are arranged on the upper and lower sides of the heating station, that is, on the upper and lower sides of the loading tray 7, so that the moisture of the molding sand in the loading tray 7 can be quickly heated and evaporated.

[0029] The weighing mechanism 3 includes: a lifting cylinder 31, a weighing sensor 32, a thermal insulation pad and a lifting tray 33; the lifting cylinder 31 is installed on the base 1, and the piston rod end of the lifting cylinder 31 is provided with a weighing sensor 32, and the weighing sensor 32 is provided with a thermal insulation pad and a lifting tray 33 in sequence, and the thermal insulation pad can block the heat transferred from the lifting tray 33 (because the lifting tray 33 is connected to the heated loading tray 7, there will be invisible heat transfer). When the above-mentioned weighing mechanism 3 is used, the loading pan 7 is first placed on the U-shaped groove plate 442 on the placement plate 44. At this time, the first weighing measurement is carried out, that is, the lifting cylinder 31 is controlled to extend, driving the lifting tray 33 to rise until the loading pan 7 is lifted and separated from the U-shaped groove plate 442. At this time, the weighing sensor 32 can be used to sense the weight of the molding sand containing moisture at this time, and then the lifting cylinder 31 is controlled to return, and the loading pan 7 returns to the U-shaped groove plate 442. Then, the switching mechanism 4 can be controlled to move, and the loading pan 7 is switched from the weighing station to the heating station to heat and evaporate the moisture in the molding sand. When the heating is completed, the loading pan 7 is switched to the weighing station again, and the second weighing is completed by controlling the lifting cylinder 31 to complete the action, so that the moisture content of the molding sand can be calculated using the principle of dry weighing method.

[0030] It also includes a sealing plate 5, which is embedded on the movable shaft 43 in the heating box 2. When it abuts against the channel opening 21, a sealed heating chamber is formed. That is, when the loading plate 7 is switched from the heating station to the weighing station, the sealing plate 5 can move forward to abut against the rear side wall of the channel opening 21 to form a sealing structure to prevent the heat in the heating box 2 from dissipating.

[0031] The mounting plate 441 also includes an embedded sealing strip, which forms a sealed heating chamber when it abuts against the channel opening 21. That is, when the loading plate 7 is switched from the weighing station to the heating station, the mounting plate 441 can be moved backward to abut against the front side wall of the channel opening 21 to form a sealing structure to prevent the heat in the heating box 2 from dissipating.

[0032] Furthermore, the molding sand moisture detection equipment also includes a PLC control panel 6 with a display screen and operation buttons, which are respectively connected to the heating box 2, the weighing mechanism 3 and the switching mechanism 4. The PLC control panel 6 is embedded in the front side of the base 1 for easy operation and display of weighing readings, etc., and the above-mentioned control connection belongs to the common knowledge known to technical personnel in this field, so it will not be described in detail.

[0033] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A molding sand moisture detection device, characterized in that: include: A base (1), a heating box (2), a weighing mechanism (3) and a switching mechanism (4); the weighing mechanism (3) and the heating box (2) are linearly arranged on the base (1) in a front-to-back manner, and the heating box (2) also includes the switching mechanism (4) installed on it, which is used to move and switch a loading tray (7) between a heating position of the heating box (2) and a weighing position of the weighing mechanism (3).

2. A molding sand moisture detection device as claimed in claim 1, characterized in that: The switching mechanism (4) comprises: a switching cylinder (41), a connecting plate (42), a moving shaft (43) and a placement plate (44); the switching cylinder (41) is mounted on the rear side wall of the heating box (2); the piston rod of the switching cylinder (41) is connected to the connecting plate (42); the moving shaft (43) is symmetrically provided at the left and right ends of the connecting plate (42); the moving shaft (43) is slidably plugged into the heating box (2); and the placement plate (44) is provided at the front end of the moving shaft (43); the placement plate (44) is used to place and support the loading tray (7).

3. A molding sand moisture detection device as claimed in claim 2, characterized in that: It also includes a passage opening (21), wherein the passage opening (21) is opened on the front side wall of the heating box (2), and the passage opening (21) is used for the placement plate (44) to pass through.

4. A molding sand moisture detection device as claimed in claim 3, characterized in that: The placement plate (44) comprises a mounting plate (441) and a U-shaped groove plate (442); the mounting plate (441) is used to be connected to the movable shaft (43), and the U-shaped groove plate (442) is provided at the rear end of the mounting plate (441).

5. The molding sand moisture detection device according to claim 1, characterized in that: The heating box (2) also includes a plurality of carbon fiber heating tubes arranged therein, and the carbon fiber heating tubes are arranged in a spiral disc structure.

6. A molding sand moisture detection device as claimed in claim 5, characterized in that: The number of the carbon fiber heating tubes arranged is at least two, and they are arranged at the upper and lower sides of the heating station respectively.

7. A molding sand moisture detection device as claimed in claim 1, characterized in that: The weighing mechanism (3) comprises: a lifting cylinder (31), a weighing sensor (32), a heat insulating pad and a lifting tray (33); the lifting cylinder (31) is mounted on the base (1), the weighing sensor (32) is provided at the piston rod end of the lifting cylinder (31), and the heat insulating pad and the lifting tray (33) are provided on the weighing sensor (32) in sequence.

8. A molding sand moisture detection device as claimed in claim 3, characterized in that: It also comprises a sealing plate (5), wherein the sealing plate (5) is embedded on the movable shaft (43) in the heating box (2) and forms a sealed heating chamber when it abuts against the channel opening (21).

9. A molding sand moisture detection device as claimed in claim 4, characterized in that: The mounting plate (441) also includes an embedded sealing strip, which forms a sealed heating chamber when it abuts against the channel opening (21).

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