Exhaust mechanism for investment casting shell

Abstract

The utility model provides an exhaust mechanism for an investment casting shell, relates to the technical field of investment casting shells, and aims to solve the problems that the exhaust mechanism is inconvenient to be fixedly mounted on the investment casting shell quickly and stably, the operation efficiency is easily influenced, the exhaust is not uniform, the quality of a casting is influenced, and the cost is high. The exhaust mechanism comprises a seat body, a fixed seat and the rubber suction hood, wherein the rubber suction hood is arranged on the fixed seat; the two ends of the base body are each fixedly provided with a set of side plates, and the inner end of the fixing base is fixedly provided with a fixing plate. The device can be quickly and fixedly mounted on the investment casting shell for exhausting, the fixing plate can be correspondingly adjusted according to different structures of the investment casting shell, so that the fixing effect of the device is improved, the device has better adjustability, and the bottom of the rubber suction hood is always in contact with the top surface of the investment casting shell, so that the exhaust efficiency is improved. And the exhaust effect of the device is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of investment casting shell technology, and more specifically, it relates to an exhaust mechanism for investment casting shells. Background Technology

[0002] Investment casting, also known as lost-wax casting, includes processes such as wax pressing, wax repair, tree assembly, slurry application, wax melting, pouring molten metal, and post-processing. The production of the mold shell can rely on investment casting. By continuously drawing gas from the exhaust port through the exhaust fan, the gas can be discharged in a timely manner, thereby reducing problems such as oxidation and porosity in the casting during the casting process. Therefore, an exhaust mechanism for investment casting mold shells is needed.

[0003] Existing exhaust mechanisms for investment casting molds are not easy to install quickly and securely on the molds, which can affect work efficiency, cause uneven exhaust, and consequently affect the quality of the castings. Furthermore, the connection between the rubber suction hood of the exhaust mechanism and the exhaust groove of the investment casting mold needs to be improved, which can easily reduce exhaust efficiency. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an exhaust mechanism for investment casting mold shells, which solves the problems that existing similar devices are not convenient for quick and easy installation on investment casting mold shells for exhaust operations, and that poor connection between the device's rubber suction cover and the exhaust groove of the investment casting mold shell can easily affect the device's exhaust effect.

[0005] The exhaust mechanism for investment casting mold shells of this utility model is achieved by the following specific technical means:

[0006] An exhaust mechanism for an investment casting mold shell includes a base, a fixed base, and a rubber suction hood;

[0007] A set of side plates is fixedly installed at both ends of the base. A set of movable frames is threadedly installed at both ends of the base. A set of guide blocks is fixedly installed at both ends of the bottom of the movable frames. Positioning grooves are equidistantly opened at the outer ends of the guide blocks. A set of guide grooves is opened at both ends of the fixed base. The guide grooves at both ends of the fixed base are slidably installed on the guide blocks at both ends of the bottom of the movable frames. A positioning block is also slidably installed at the outer end of the fixed base. The positioning block at the outer end of the fixed base is inserted into the positioning groove of the guide block. A set of exhaust fans is fixedly installed at the top of the base. A telescopic tube is connected to the top of the rubber suction hood. The rubber suction hood is connected to the bottom end of the exhaust fans through the telescopic tube. A set of mounting plates is also fixedly installed on the rubber suction hood. The mounting plates are slidably installed at the bottom of the base. A fixing plate is fixedly installed at the inner end of the fixed base.

[0008] In at least some embodiments, a set of support plates are fixedly installed on the outer end of the fixed base, and a set of sliding holes are provided on the support plates. A set of connecting rods are fixedly installed on the outer end of the positioning block, and the connecting rods at the outer end of the positioning block are slidably installed in the sliding holes of the support plates on the fixed base.

[0009] In at least some embodiments, a set of inner sliding grooves are respectively opened at both ends of the interior of the seat, and a set of sliding shafts are respectively fixedly installed at both ends of the mounting plate, and the sliding shafts at both ends of the mounting plate are slidably installed on the inner sliding grooves at both ends of the interior of the seat.

[0010] In at least some embodiments, a set of guide rods is fixedly installed on the base, and a set of guide holes are opened on the top of the movable frame, and the guide holes on the top of the two sets of movable frames are respectively slidably installed on the guide rods of the base.

[0011] In at least some embodiments, a set of first elastic members are respectively installed in the inner sliding grooves at both ends of the seat body, and the bottom end of the first elastic member is in contact with the top surface of the sliding shaft on the mounting plate.

[0012] In at least some embodiments, a set of second elastic members is sleeved on the connecting rod at the outer end of the positioning block, and the outer end of the second elastic member is in contact with the inner end face of the support plate on the fixed seat.

[0013] In at least some embodiments, a set of double-ended screws is rotatably mounted on the base, and a set of threaded holes is opened on the top of the movable frame, with the two sets of threaded holes on the top of the movable frame respectively threaded onto the two ends of the double-ended screws.

[0014] Compared with the prior art, the venting mechanism for investment casting mold shell of this utility model has the following beneficial effects:

[0015] 1. The movable frame is designed to be threaded onto both ends of a double-ended screw via threaded holes at the top of two sets of movable frames. Guide holes at the top of the two sets of movable frames are slidably mounted on guide rods of the base. Rotating the double-ended screw causes the two sets of movable frames threaded onto it to move inwards simultaneously, facilitating quick and easy installation onto the investment casting mold for venting. The connecting rod at the outer end of the positioning block is slidably mounted in the sliding hole of the support plate on the fixed base. Pulling the positioning block outwards causes guide grooves at both ends of the fixed base to slidably mount onto guide blocks at both ends of the bottom of the movable frame. After pulling the fixed base down to the desired position, releasing the positioning block allows the positioning block at the outer end of the fixed base to insert into the positioning groove of the guide block under the action of the second elastic element on the connecting rod. This allows the fixing plate on the fixed base of the device to be easily adjusted according to different structures of the investment casting mold, improving the device's fixing effect and providing excellent adjustability.

[0016] 2. The mounting plate is designed to allow for sliding installation on the inner grooves at both ends of the base body via the sliding shafts at both ends. This, combined with the first elastic element in the inner groove, ensures that the bottom of the rubber suction hood is always in contact with the top surface of the investment casting shell, effectively improving the exhaust performance of the device and avoiding the problem of poor connection between the rubber suction hood and the exhaust groove of the investment casting shell affecting the exhaust performance of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front side axis of this utility model.

[0018] Figure 2 This is a bottom schematic diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the mobile frame of this utility model.

[0020] Figure 4 This is an installation diagram of the fixing base of this utility model.

[0021] Figure 5 This is a cross-sectional schematic diagram of the base of this utility model.

[0022] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0023] 1. Base; 101. Side plate; 102. Double-ended screw; 103. Guide rod; 104. Inner sliding groove; 1041. First elastic element; 2. Exhaust fan; 3. Moving frame; 301. Threaded hole; 302. Guide hole; 303. Fixed base; 3031. Fixed plate; 3032. Support plate; 3033. Positioning block; 3034. Connecting rod; 3035. Second elastic element; 3036. Guide groove; 304. Guide block; 305. Positioning groove; 4. Rubber suction cover; 401. Mounting plate; 4011. Sliding shaft; 402. Telescopic tube. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0025] As attached Figure 1 To be continued Figure 5 As shown:

[0026] Example 1: This utility model provides an exhaust mechanism for investment casting mold shells, including a base 1, a fixed base 303 and a rubber suction hood 4;

[0027] A set of side plates 101 are fixedly installed at both ends of the base body 1. A set of movable frames 3 are threadedly installed at both ends of the base body 1. A set of guide blocks 304 are fixedly installed at both ends of the bottom of the movable frames 3. Positioning grooves 305 are equidistantly opened on the outer ends of the guide blocks 304. A set of guide grooves 3036 are opened at both ends of the fixed seat 303, and the guide grooves 3036 at both ends of the fixed seat 303 are slidably installed on the guide blocks 304 at both ends of the bottom of the movable frames 3. A set of guide grooves 3036 is also slidably installed on the outer ends of the fixed seat 303. The positioning block 3033 and the positioning block 3033 at the outer end of the fixed seat 303 are inserted and installed on the positioning groove 305 of the guide block 304. A set of exhaust fans 2 are fixedly installed on the top of the seat body 1. The top of the rubber suction cover 4 is connected to the telescopic tube 402. The rubber suction cover 4 is connected to the bottom end of the exhaust fan 2 through the telescopic tube 402. A set of mounting plates 401 are also fixedly installed on the rubber suction cover 4. The mounting plates 401 are slidably installed on the bottom of the seat body 1. The inner end of the fixed seat 303 is fixedly installed with a fixing plate 3031.

[0028] like Figures 2 to 4As shown, a set of double-ended screws 102 are rotatably mounted on the base 1. A set of threaded holes 301 are opened on the top of the movable frame 3, and the threaded holes 301 on the top of the two sets of movable frames 3 are respectively threaded onto the two ends of the double-ended screws 102. A set of guide rods 103 are fixedly mounted on the base 1. A set of guide holes 302 are opened on the top of the movable frame 3, and the guide holes 302 on the top of the two sets of movable frames 3 are respectively slidably mounted on the guide rods 103 of the base 1. A set of support plates 3032 are fixedly mounted on the outer end of the fixed base 303. A set of sliding holes is provided. A set of connecting rods 3034 are fixedly installed on the outer end of the positioning block 3033, and the connecting rods 3034 on the outer end of the positioning block 3033 are slidably installed in the sliding holes of the upper support plate 3032 of the fixed base 303. A set of second elastic elements 3035 are sleeved on the connecting rods 3034 on the outer end of the positioning block 3033, and the outer end of the second elastic element 3035 is in contact with the inner end face of the upper support plate 3032 of the fixed base 303. Specifically, the threaded holes 301 on the top of the two sets of movable frames 3 are respectively threaded onto the double-ended screw 1. At both ends of 02, the guide holes 302 on the top of the two sets of movable frames 3 are slidably installed on the guide rods 103 of the base 1. Rotating the double-ended screw 102 causes the two sets of movable frames 3 threaded onto the double-ended screw 102 to move inward simultaneously, so that the device can be quickly and easily fixed and installed on the investment casting mold shell for venting operations. The connecting rod 3034 at the outer end of the positioning block 3033 is slidably installed in the sliding hole of the support plate 3032 on the fixed base 303. Pulling the positioning block 3033 outward opens the guide grooves 3036 at both ends of the fixed base 303. Do not slide the guide blocks 304 at both ends of the bottom of the movable frame 3. After pulling the fixed seat 303 down to the desired position, release the positioning block 3033. Under the action of the second elastic element 3035 on the connecting rod 3034, the positioning block 3033 at the outer end of the fixed seat 303 is inserted into the positioning groove 305 of the guide block 304. This makes it easy to adjust the fixed plate 3031 on the fixed seat 303 of this device according to the different structures of the investment casting shell, so as to improve the fixing effect of the device and the device has better adjustability.

[0029] Example 2: Based on Example 1, as follows Figure 5As shown, a set of inner sliding grooves 104 are respectively opened at both ends of the interior of the base 1. A set of sliding shafts 4011 are fixedly installed at both ends of the mounting plate 401, and the sliding shafts 4011 at both ends of the mounting plate 401 are slidably installed on the inner sliding grooves 104 at both ends of the interior of the base 1. A set of first elastic members 1041 are respectively installed in the inner sliding grooves 104 at both ends of the interior of the base 1, and the bottom end of the first elastic member 1041 is in contact with the top surface of the sliding shaft 4011 on the mounting plate 401. Specifically, the sliding shafts 4011 at both ends of the mounting plate 401 are slidably installed on the inner sliding grooves 104 at both ends of the interior of the base 1. With the cooperation of the first elastic members 1041 in the inner sliding grooves 104, the bottom of the rubber suction cover 4 is always in contact with the top surface of the investment casting shell, which effectively improves the exhaust effect of the device and avoids the problem of poor connection between the rubber suction cover 4 and the air outlet groove of the investment casting shell affecting the exhaust effect of the device.

[0030] The specific usage and function of this embodiment are as follows:

[0031] In use, rotating the double-ended screw 102 causes the two sets of movable frames 3 threaded onto the double-ended screw 102 to move inward simultaneously, facilitating quick and easy installation of the device onto the investment casting mold shell for venting operations. Pulling the positioning block 3033 outward causes the guide grooves 3036 at both ends of the fixed seat 303 to slide onto the guide blocks 304 at both ends of the bottom of the movable frame 3. Pulling the fixed seat 303 downward to the desired position and releasing the positioning block 3033 allows the positioning block 3033 at the outer end of the fixed seat 303 to be inserted and installed under the action of the second elastic element 3035 on the connecting rod 3034. The positioning groove 305 of the guide block 304 allows the fixing plate 3031 on the fixing seat 303 of the device to be adjusted according to the different structures of the investment casting shell; the sliding shafts 4011 at both ends of the mounting plate 401 are slidably installed on the inner sliding grooves 104 at both ends of the seat body 1, and cooperate with the first elastic element 1041 in the inner sliding groove 104 so that the bottom of the rubber suction hood 4 is always in contact with the top surface of the investment casting shell, which effectively improves the exhaust effect of the device and avoids the problem of poor connection between the rubber suction hood 4 and the air outlet groove of the investment casting shell affecting the exhaust effect of the device.

[0032] The following points should be noted in this article:

[0033] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0034] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0035] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A venting mechanism for an investment casting mold shell, characterized in that: It includes a base (1), a fixed base (303), and a rubber suction cover (4); A set of side plates (101) are fixedly installed at both ends of the base (1). A set of movable frames (3) are threadedly installed at both ends of the base (1). A set of guide blocks (304) are fixedly installed at both ends of the bottom of the movable frames (3). Positioning grooves (305) are equidistantly provided at the outer ends of the guide blocks (304). A set of guide grooves (3036) are provided at both ends of the fixed seat (303). The guide grooves (3036) at both ends of the fixed seat (303) are slidably installed on the guide blocks (304) at both ends of the bottom of the movable frames (3). Positioning grooves (305) are also slidably installed at the outer ends of the fixed seat (303). The positioning block (3033) at the outer end of the fixed seat (303) is inserted into the positioning groove (305) of the guide block (304). A set of exhaust fans (2) is fixedly installed on the top of the seat (1). A telescopic tube (402) is connected to the top of the rubber suction cover (4). The rubber suction cover (4) is connected to the bottom end of the exhaust fan (2) through the telescopic tube (402). A set of mounting plates (401) is also fixedly installed on the rubber suction cover (4). The mounting plates (401) are slidably installed on the bottom of the seat (1). A fixing plate (3031) is fixedly installed on the inner end of the fixed seat (303).

2. The venting mechanism for an investment casting mold shell according to claim 1, characterized in that: A set of double-headed screws (102) are rotatably mounted on the base (1), and a set of threaded holes (301) are opened on the top of the movable frame (3), and the threaded holes (301) on the top of the two sets of movable frames (3) are respectively threaded onto the two ends of the double-headed screws (102).

3. The venting mechanism for an investment casting mold shell according to claim 1, characterized in that: A set of guide rods (103) is fixedly installed on the seat (1), and a set of guide holes (302) are opened on the top of the movable frame (3), and the guide holes (302) on the top of the two sets of movable frames (3) are slidably installed on the guide rods (103) of the seat (1).

4. The venting mechanism for an investment casting mold shell according to claim 1, characterized in that: A set of support plates (3032) are fixedly installed on the outer end of the fixed base (303). A set of sliding holes are provided on the support plates (3032). A set of connecting rods (3034) are fixedly installed on the outer end of the positioning block (3033), and the connecting rods (3034) at the outer end of the positioning block (3033) are slidably installed in the sliding holes of the support plates (3032) on the fixed base (303).

5. The venting mechanism for an investment casting mold shell according to claim 1, characterized in that: A set of second elastic elements (3035) is sleeved on the connecting rod (3034) at the outer end of the positioning block (3033), and the outer end of the second elastic element (3035) is in contact with the inner end face of the support plate (3032) on the fixed seat (303).

6. The venting mechanism for an investment casting mold shell according to claim 1, characterized in that: The seat (1) has a set of inner sliding grooves (104) at both ends, and a set of sliding shafts (4011) are fixedly installed at both ends of the mounting plate (401), and the sliding shafts (4011) at both ends of the mounting plate (401) are slidably installed on the inner sliding grooves (104) at both ends of the seat (1).

7. The venting mechanism for an investment casting mold shell according to claim 1, characterized in that: A set of first elastic members (1041) are respectively installed in the inner sliding grooves (104) at both ends of the seat (1), and the bottom end of the first elastic member (1041) is in contact with the top surface of the sliding shaft (4011) on the mounting plate (401).

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