Protection device for riser tube

Abstract

The utility model discloses a protection device for a riser tube, which comprises a low-pressure casting machine and the riser tube, the protection device matched with the riser tube is arranged on the low-pressure casting machine, the protection device comprises a pressing plate, a tray and an elastic piece, the tray is arranged at a liquid outlet of the low-pressure casting machine through a bolt and a nut, at least one elastic piece is sleeved on the bolt, and the pressing plate is arranged on the pressing plate. The elastic piece abuts against the low-pressure casting machine and the tray respectively, the pressing plate is installed on the top of the liquid rising pipe in a sliding mode, the pressing plate is connected with the tray through a double-thread screw and a nut, and the liquid rising pipe abuts against the pressing plate and the tray respectively. According to the device, the riser tube can be prevented from being directly located on the liquid outlet of the low-pressure casting machine, the protection device is arranged between the riser tube and the liquid outlet of the low-pressure casting machine, the elastic piece is installed between the tray in the protection device and the liquid outlet of the low-pressure casting machine, then the riser tube abuts against the tray through the pressing plate, and the buffering effect is achieved through the elastic effect; cracking caused by vibration of the riser tube during descending buffering of the low-pressure casting machine is prevented, and the safety and the service life of the riser tube are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure casting riser pipes, in particular to a protection device for riser pipes. Background Art

[0002] The production of automotive alloy wheels generally uses a low-pressure casting process. A mold is placed above a sealed crucible. A low-pressure casting machine introduces compressed air into the crucible. The pressure acting on the molten metal surface causes the metal to flow smoothly upward through the riser tube and runner, filling the mold. The filling pressure is typically 20-60 kPa. Once the casting has fully solidified, the air pressure on the liquid surface is released, allowing the unsolidified metal in the riser tube and runner to flow back into the crucible by gravity. The mold is then opened and the casting removed.

[0003] Because the liquid outlet of the low-pressure casting machine is directly matched with the rising pipe, when the low-pressure casting machine descends and buffers, the rising pipe will vibrate and cause cracks, which can easily cause the rising pipe to crack or be directly damaged, which not only affects the liquid discharge, but also reduces the protective performance, requiring shutdown for maintenance or even complete replacement, affecting production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a protective device for a liquid riser pipe, so as to solve the problem of a protective device for a liquid riser pipe.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A protective device for a riser pipe comprises a low-pressure casting machine and a riser pipe installed at the liquid outlet of the low-pressure casting machine. The low-pressure casting machine is provided with a protective device adapted to the riser pipe. The protective device comprises a pressure plate, a tray and an elastic member. The tray is installed at the liquid outlet of the low-pressure casting machine by bolts and nuts. At least one elastic member is sleeved on the bolt. The elastic members are respectively pressed against the low-pressure casting machine and the tray. The pressure plate is slidably installed on the top of the riser pipe. The pressure plate is connected to the tray through a double-headed screw and a nut. The riser pipe is respectively pressed against the pressure plate and the tray.

[0007] A further technical solution is that a conical diameter expansion section is provided on the upper portion of the riser.

[0008] A further technical solution is: the elastic member is a butterfly-shaped spring piece.

[0009] A further technical solution is that the riser pipe and the tray are directly provided with sleeves.

[0010] A further technical solution is: a limiting structure is provided between the upper outer edge of the sleeve and the upper surface of the tray.

[0011] A further technical solution is: the limiting structure consists of a stepped groove and a stepped protrusion adapted to the stepped groove.

[0012] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0013] The utility model proposes a protective device for a liquid riser, which can prevent the liquid riser from sitting directly on the liquid outlet of a low-pressure casting machine. A protective device is arranged between the two, and an elastic member is installed between a tray in the protective device and the liquid outlet of the low-pressure casting machine. Then, a pressure plate is used to press the liquid riser against the tray, and a buffering effect is achieved by relying on the elastic action, so as to prevent the liquid riser from vibrating and causing cracks when the low-pressure casting machine descends for buffering, thereby ensuring the safety and service life of the liquid riser. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a protective device for a liquid riser pipe.

[0015] Figure 2 For this utility model Figure 1 Another structural diagram.

[0016] Figure 3 For this utility model Figure 2 Schematic diagram of the structure of the middle sleeve.

[0017] Figure numerals: 1. low-pressure casting machine; 2. rising pipe; 3. protective device; 4. pressure plate; 5. tray; 6. elastic member; 7. bolt; 8. double-headed screw; 9. sleeve; 10. limiting structure. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Example 1:

[0025] This embodiment Figure 1 As shown, a protective device for a riser pipe includes a low-pressure casting machine 1 and a riser pipe 2 installed at the liquid outlet of the low-pressure casting machine 1. The low-pressure casting machine 1 is provided with a protective device 3 adapted to the riser pipe 2. The protective device 3 includes a pressure plate 4, a tray 5 and an elastic member 6. The tray 5 is installed at the liquid outlet of the low-pressure casting machine 1 through bolts 7 and nuts. At least one elastic member 6 is mounted on the bolt 7. The elastic members 6 are respectively pressed against the low-pressure casting machine 1 and the tray 5. The pressure plate 4 is slidably installed on the top of the riser pipe 2. The pressure plate 4 is connected to the tray 5 through a double-headed screw 8 and a nut. The riser pipe 2 is respectively pressed against the pressure plate 4 and the tray 5.

[0026] After the cam 5 is in the working state, the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam 5 is in the working state, and the cam

[0027] Preferably, a conical diameter-expanding section is provided at the upper portion of the riser pipe 2 .

[0028] The tapered enlarged diameter section of the riser pipe 2 can be matched with the tapered portion of the tray 5 , facilitating the matching and installation between the riser pipe 2 and the tray 5 .

[0029] Preferably, the elastic member 6 is a butterfly-shaped spring.

[0030] The butterfly-shaped spring is easy to install and is stable and reliable.

[0031] Preferably, if Figure 2 and Figure 3 As shown, the riser tube 2 and the tray 5 are directly provided with a sleeve 9 .

[0032] The sleeve 9 can be made of soft material and plays an intermediate protection role;

[0033] The sleeve 9 can be made of heat-resistant material to play a heat-insulating role, preventing the tray 5 from overheating, and the number of elastic members 9 is not easy to adjust.

[0034] Preferably, a limiting structure 10 is provided between the upper outer edge of the sleeve 9 and the upper surface of the tray 5. The limiting structure 10 is composed of a stepped groove and a stepped protrusion adapted to the stepped groove.

[0035] The limiting structure 10 facilitates the positioning and installation of the sleeve 9 and the tray 5 .

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A liquid riser protection device, comprising a low-pressure casting machine (1) and a liquid riser (2) installed at a liquid outlet of the low-pressure casting machine (1), characterized in that: The low-pressure casting machine (1) is provided with a protective device (3) adapted to the liquid riser (2), the protective device (3) comprising a pressure plate (4), a tray (5) and an elastic member (6), the tray (5) being mounted on the liquid outlet of the low-pressure casting machine (1) by means of bolts (7) and nuts, at least one elastic member (6) being mounted on the bolts (7), the elastic member (6) respectively pressing against the low-pressure casting machine (1) and the tray (5), the pressure plate (4) being slidably mounted on the top of the liquid riser (2), the pressure plate (4) being connected to the tray (5) by means of a double-headed screw (8) and a nut, and the liquid riser (2) pressing against the pressure plate (4) and the tray (5) respectively.

2. The riser pipe protection device according to claim 1, characterized in that: The upper portion of the riser pipe (2) is provided with a tapered diameter expansion section.

3. The riser pipe protection device according to claim 1, characterized in that: The elastic member (6) is a butterfly-shaped spring piece.

4. The riser pipe protection device according to claim 1, characterized in that: The riser tube (2) and the tray (5) are directly provided with a sleeve (9).

5. The rising pipe protection device according to claim 4, characterized in that: A limiting structure (10) is provided between the upper outer edge of the sleeve (9) and the upper surface of the tray (5).

6. The rising pipe protection device according to claim 5, characterized in that: The limiting structure (10) consists of a stepped groove and a stepped protrusion adapted to the stepped groove.

Images