Heating device for material pipe of die-casting machine

Abstract

The utility model discloses a die-casting machine material pipe heating device which comprises at least two flange pieces, a resistance wire and a heat insulation assembly used for wrapping the flange pieces and the resistance wire, the resistance wire is located between the two flange pieces, and the heat insulation assembly comprises a fixed sleeve piece and a movable sleeve piece. Wherein one flange piece is fixedly connected with the fixed sleeve piece, the other flange piece is slidably connected with the movable sleeve piece, and the end, away from the fixed sleeve piece, of the movable sleeve piece is connected with a pushing module. According to the utility model, the phenomenon of non-uniform heating is overcome, and the resistance wire is coated by the partition assembly, so that the outward dissipation of heat is reduced; meanwhile, the flange piece is in sliding connection with the movable sleeve piece, and when cooling maintenance is needed, the pushing module drives the movable sleeve piece to be away from the fixed sleeve piece, so that the resistance wire is in contact with external air, rapid heat exchange is achieved, the heat dissipation speed of the heating device is increased, and timely maintenance is achieved.

Description

Technical Field

[0001] This utility model relates to the field of die casting technology, specifically a heating device for the material tube of a die casting machine. Background Technology

[0002] In the die-casting process using a hot chamber die-casting machine, it is usually necessary to heat the die-casting machine's feed tube. Most manufacturers use the following heating method: a row of gas nozzles is installed at the bottom of the feed tube, and gas is introduced to heat the feed tube during operation. This heating method has the following disadvantages: because heating only one surface results in long heating time and uneven heating; the temperature of the feed tube cannot be controlled by gas heating and can only be judged based on experience; there is no heat insulation layer on the outside of the feed tube, heat dissipation is rapid, the feed tube temperature cannot reach a very high temperature, and the heating efficiency is low.

[0003] Referring to an existing hot chamber die-casting machine tube heating device (patent number: CN200720122348.3), it includes a resistance wire wound around the tube and a heat insulation ring covering the tube with the resistance wire wound around it. The resistance wire is used to heat the entire tube, overcoming the problem of uneven heating; a heat insulation layer is provided on the outside of the tube and the resistance wire wound around it to reduce heat loss.

[0004] The aforementioned prior art has excellent heat preservation effect, but when the equipment is damaged, the heating device remains at a high temperature, making it difficult to repair. Forcibly removing it poses a safety hazard, while waiting for it to cool down naturally requires a long cooling time, which will affect the overall production efficiency and delay the delivery schedule. Utility Model Content

[0005] The purpose of this utility model is to provide a heating device for the material tube of a die-casting machine, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heating device for a die-casting machine tube, comprising a flange sleeved on the tube, a resistance wire wound on the tube, and a heat insulation assembly for covering the flange and the resistance wire. At least two flanges are provided, arranged symmetrically, with the resistance wire located between the two flanges. The heat insulation assembly includes a fixed assembly and a movable assembly. One flange is fixedly connected to the fixed assembly, and the other flange is slidably connected to the movable assembly. The fixed assembly and the movable assembly form a cylindrical structure after contacting each other. A propulsion module is connected to the end of the movable assembly away from the fixed assembly, and the propulsion module drives the movable assembly closer to or further away from the fixed assembly.

[0007] Preferably, the flange is provided with a plurality of sliding grooves, and the inner wall of the movable kit is provided with a plurality of sliding parts adapted to the sliding grooves. The plurality of sliding grooves and the plurality of sliding parts correspond one-to-one and are slidably connected.

[0008] Preferably, the flange includes an integrally formed flange and sleeve, and the end of the movable assembly is provided with an opening that matches the shape of the sleeve, so that the sleeve can fit into the opening. A plurality of sliding grooves are provided on the flange.

[0009] Preferably, the fixed kit has an annular insert groove at one end near the movable kit, and the movable kit has an insert that is adapted to the structure of the annular insert groove at one end near the fixed kit.

[0010] Preferably, the insert is made of aluminum alloy.

[0011] Preferably, the sliding component is made of aluminum alloy.

[0012] Preferably, the fixing kit and the moving kit are made of silicon ceramic fiber.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention uses a resistance wire to heat the material tube, overcoming the problem of uneven heating. The resistance wire is covered by a partition component to reduce heat loss. At the same time, the flange and the movable assembly are slidably connected. When cooling and maintenance are required, the module is pushed to move the movable assembly away from the fixed assembly, allowing the resistance wire to come into contact with the outside air, achieving rapid heat exchange and accelerating the heat dissipation of the heating device for timely maintenance. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention;

[0016] Figure 2 This is a structural schematic diagram of the flange component of this utility model;

[0017] Figure 3 This is a cross-sectional view of the active kit of this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Please see Figures 1 to 3 This utility model provides an embodiment of a heating device for a die-casting machine's feed tube, comprising a flange 1 sleeved on the feed tube 10, a resistance wire 2 wound around the feed tube 10, and a heat insulation assembly for covering the flange 1 and the resistance wire 2. At least two flanges 1 are provided, arranged symmetrically, with the resistance wire 2 located between the two flanges 1. The heat insulation assembly includes a fixed assembly 3 and a movable assembly 4. One flange 1 is fixedly connected to the fixed assembly 3, and the other flange 1 is slidably connected to the movable assembly 4. The fixed assembly 3 and the movable assembly 4 form a cylindrical structure after contacting each other, covering the flange 1 and the resistance wire 2. The resistance wire 2 is heated, and the heat insulation assembly prevents heat loss, significantly increasing the heating temperature. A propulsion module (not shown) is connected to the end of the movable assembly 4 away from the fixed assembly 3. The propulsion module moves the movable assembly 4 closer to or away from the fixed assembly 3. When rapid cooling is required, the propulsion module moves the movable assembly 4 away from the fixed assembly 3, allowing the resistance wire 2 to contact the outside air, achieving rapid heat exchange, accelerating the heat dissipation of the heating device, and facilitating timely maintenance.

[0021] Furthermore, the propulsion module can be a cylinder or a lead screw drive module; wherein, the lead screw drive module can be an electric drive module with a motor, or a mechanical lead screw drive module that is manually rotated.

[0022] Furthermore, the flange 1 can separate the resistance wire 2 and the heat insulation assembly. This structure can prevent the movable kit 4 from touching the resistance wire 2 during sliding, which would damage the resistance wire 2.

[0023] In this embodiment, the flange 1 is provided with a plurality of sliding grooves 5, and the inner wall of the movable kit 4 is provided with a plurality of sliding parts 6 that are adapted to the sliding grooves. The plurality of sliding grooves 5 and the plurality of sliding parts 6 correspond one-to-one and are slidably connected. The sliding parts 6 made of aluminum alloy can make their surface smooth, thereby improving the sliding flow between the sliding grooves 5 and the sliding parts 6.

[0024] In this embodiment, the flange 1 includes an integrally formed flange 11 and sleeve 12. The movable assembly 4 has an opening 7 at its tail end that matches the shape of the sleeve. The sleeve 12 can fit into the opening 7. This structure can further improve the airtightness of the cylindrical structure and improve the heat insulation effect. Several sliding grooves 5 are provided on the flange 11. At the same time, when the movable assembly 4 is away from the fixed assembly 3, the opening 7 can increase the contact surface between the heating device and the external air, thereby improving the heat dissipation effect.

[0025] Furthermore, the sleeve 12 is provided with a countersunk hole (not shown in the figure), which can be connected to the countersunk hole by a fixing screw, and the fixing screw abuts against the material tube 10 to achieve a locking connection between the flange 1 and the material tube 10.

[0026] In this embodiment, the fixed kit 3 is provided with an annular embedding groove 8 at one end near the movable kit 4, and the movable kit 4 is provided with an insert 9 that is adapted to the structure of the annular embedding groove 8 at one end near the fixed kit. The aluminum alloy insert 9 can fit tightly into the annular embedding groove 8, improving the airtightness of the cylindrical structure and thus improving the heat insulation effect. Both the fixed kit 3 and the movable kit 4 are made of silicon ceramic fiber. If the two are in direct hard contact, it may cause damage to both. However, by separating them with the insert 9, direct contact is prevented, which can improve the service life of the fixed kit 3 and the movable kit 4.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A heating device for the feed tube of a die-casting machine, characterized in that: The device includes a flange fitted onto a feed tube, a resistance wire wound around the feed tube, and a heat insulation assembly for covering the flange and the resistance wire. At least two flanges are provided, arranged symmetrically, with the resistance wire located between the two flanges. The heat insulation assembly includes a fixed assembly and a movable assembly. One flange is fixedly connected to the fixed assembly, and the other flange is slidably connected to the movable assembly. The fixed assembly and the movable assembly form a cylindrical structure after they come into contact with each other. The end of the movable assembly away from the fixed assembly is connected to a propulsion module, which drives the movable assembly to move closer to or away from the fixed assembly.

2. The heating device for the die-casting machine material tube according to claim 1, characterized in that: The flange is provided with a number of sliding grooves, and the inner wall of the movable kit is provided with a number of sliding parts that are adapted to the sliding grooves. The number of sliding grooves and the number of sliding parts correspond one-to-one and are slidably connected.

3. A heating device for a die-casting machine feed tube according to any one of claims 1 or 2, characterized in that: The flange includes an integrally formed flange and sleeve. The end of the movable assembly has an opening that matches the shape of the sleeve, and the sleeve can fit into the opening. Several grooves are provided on the flange.

4. The heating device for the die-casting machine material tube according to claim 1, characterized in that: The fixed kit has an annular embedding groove at one end near the movable kit, and the movable kit has an insert that is adapted to the structure of the annular embedding groove at one end near the fixed kit.

5. The heating device for the die-casting machine material tube according to claim 4, characterized in that: The insert is made of aluminum alloy.

6. The heating device for the die-casting machine material tube according to claim 2, characterized in that: The sliding component is made of aluminum alloy.

7. A heating device for a die-casting machine feed tube according to any one of claims 1, 2, 4, 5 or 6, characterized in that: The fixed kit and the movable kit are made of silicon ceramic fiber.

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