A mold heating furnace and a mold heating treatment line

Abstract

The utility model discloses a mould heating furnace and mould heating treatment line of aluminium profile production equipment technical field. Mould heating furnace includes furnace body, furnace cover, opening and closing frame body and opening and closing drive mechanism. Opening and closing drive mechanism can drive opening and closing frame body to move to back, make bracket from open mouth expose in heating cavity, and the convenient to take place to the mould on bracket. When opening and closing drive mechanism drives opening and closing frame body to move to front, thereby let furnace cover resist closed open mouth, the mould on bracket is in heating cavity, carries out heating or heat preservation treatment through heating element in heating cavity, makes the mould can keep in specific temperature. Mould heating treatment line is connected in series splicing through the base frame to multiple mould heating furnaces, can realize the gradient use of multiple mould heating furnaces.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum profile production equipment, and in particular to a mold heating furnace and a mold heating treatment line. Background Technology

[0002] Aluminum profile extrusion is an important metal plastic forming method in modern industry. Its basic principle is to force a preheated aluminum bar under the strong pressure of an extruder through a die with a specific cross-sectional shape, thereby obtaining an aluminum profile with the desired cross-sectional shape. This technology is widely used in construction, transportation, electronics, aerospace, and other fields.

[0003] In the aluminum profile extrusion process, die temperature control is a key factor determining product quality, production efficiency, and die life. The die needs to be heated to an optimal, stable, and uniform operating temperature that is compatible with the temperature of the aluminum rod. If the die temperature is too low, it will increase the flow resistance of the aluminum metal, raise the extrusion pressure, and easily cause defects such as rough surface, cracks, and insufficient filling of the profile. It may even damage the die due to the enormous stress. Conversely, if the die temperature is too high, it will easily cause the aluminum metal to stick to the die, resulting in scratches and pitting on the profile surface. It will also accelerate die wear and oxidation, shortening its service life.

[0004] In existing technologies, aluminum profile extrusion dies are heated in a kiln, with multiple dies at different locations within the kiln for gradient temperature control. This method suffers from poor temperature control precision, long heating times, slow response to production demands, poor sealing performance, and energy waste. Utility Model Content

[0005] The purpose of this utility model is to provide a mold heating furnace to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0006] The technical solution adopted to solve the above-mentioned technical problems is as follows: A mold heating furnace, comprising: The furnace body has a hollow heating chamber with a rearward-opening opening, and a heating element is installed inside the heating chamber; A furnace lid is provided at the opening, with a bracket on the front side for supporting the mold; The opening and closing frame includes a first connecting end and a second connecting end. The first connecting end is slidably connected to the furnace body in the front and rear, and the second connecting end is movably connected to the furnace cover. An opening and closing drive mechanism is used to drive the opening and closing frame to move back and forth relative to the furnace body, so that the furnace cover abuts against the opening to close the heating chamber, or to move the furnace cover away from the opening to expose the bracket.

[0007] The mold heating furnace provided by this utility model has at least the following advantages: The opening and closing drive mechanism can move the opening and closing frame body backward, allowing the bracket to protrude from the opening into the heating chamber, facilitating the placement and removal of molds on the bracket. When the opening and closing drive mechanism moves the opening and closing frame body forward, causing the furnace lid to abut and close the opening, the mold on the bracket is located inside the heating chamber, where it is heated or kept warm by the heating elements, maintaining the mold at a specific temperature. The second connecting end is movably connected to the furnace lid, allowing the furnace lid to evenly press against the rear side of the furnace body when closed, ensuring strong sealing, preventing heat leakage, saving energy, and optimizing the equipment environment.

[0008] As a further improvement to the above technical solution, the second connecting end is located at the middle of the rear side of the furnace cover, and the second connecting end is rotatably hinged to the furnace cover so that the furnace cover can rotate relative to the opening and closing frame.

[0009] As a further improvement to the above technical solution, the bracket is aligned front to back with the middle of the heating cavity, the heating elements are arranged in pairs on opposite sides of the heating cavity, and a temperature measuring element is provided inside the heating cavity.

[0010] As a further improvement to the above technical solution, the furnace body is box-shaped, the furnace cover is rectangular block-shaped, and the projection of the furnace cover and the furnace body in the front-to-back direction coincides.

[0011] As a further improvement to the above technical solution, the furnace body and the furnace cover are respectively provided with a latch and a hook, and the latch and the hook are configured to lock together so that the furnace cover is pressed against the opening.

[0012] As a further improvement to the above technical solution, the latches and hooks are provided in multiple sets, and the multiple sets of latches and hooks are arranged along the rear edge of the furnace body and the front edge of the furnace cover, respectively.

[0013] As a further improvement to the above technical solution, the furnace body has a closed end face extending along the edge of the opening, and a heat-resistant pad is provided on the side of the furnace cover facing the heating chamber. The heat-resistant pad is aligned front to back with and matches the closed end face.

[0014] As a further improvement to the above technical solution, both the furnace body and the furnace cover include a hot surface layer, an insulation layer and an outer shell arranged in sequence, with the hot surface layer located on the side facing the heating chamber.

[0015] As a further improvement to the above technical solution, the number of insulation layers is multiple, and the multiple insulation layers are disposed between the thermal surface layer and the outer shell.

[0016] This application also provides a mold heating process line, including multiple mold heating furnaces as described above. Each mold heating furnace also includes a base frame. The furnace body is fixedly connected to the base frame. The multiple mold heating furnaces are arranged at equal intervals along the left and right directions. The base frames of two adjacent mold heating furnaces are detachably connected to each other.

[0017] The mold heating process line provided by this utility model connects multiple mold heating furnaces in series through a base frame, enabling the tiered use of multiple mold heating furnaces, eliminating waiting time, improving production efficiency, avoiding energy loss caused by frequent opening and closing of a single furnace, and enhancing the flexibility of production scheduling. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a three-dimensional schematic diagram of an embodiment of the mold heating treatment line provided by this utility model; Figure 2 This is a perspective view of an embodiment of the mold heating furnace provided by this utility model; Figure 3 This is a top view of an embodiment of the mold heating furnace provided by this utility model; Figure 4 This is a front view of an embodiment of the mold heating furnace provided by this utility model; Figure 5 This is a side sectional view of an embodiment of the mold heating furnace provided by this utility model.

[0019] In the diagram: 10-Mold heating furnace, 20-Base frame, 100-Furnace body, 110-Heating chamber, 120-Heating element, 130-Temperature measuring element, 140-Lock, 200-Furnace cover, 210-Bracket, 220-Hook, 230-Heat resistant pad, 300-Opening and closing frame, 310-First connecting end, 320-Second connecting end, 400-Opening and closing drive mechanism, 510-Heating surface layer, 520-Insulation layer, 530-Outer shell. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Reference Figures 1 to 5 The mold heating furnace of this utility model is described in the following embodiments: A mold heating furnace includes: a furnace body 100, a furnace cover 200, an opening and closing frame 300, and an opening and closing drive mechanism 400.

[0025] The furnace body 100 has a hollow structure and a heating chamber 110 is provided inside. The heating chamber 110 has a rearward-opening opening and a heating element 120 is provided inside. The furnace cover 200 is located on the rear side of the furnace body 100, and a bracket 210 is provided on the front side of the furnace cover 200 for supporting the mold. The opening and closing frame 300 includes a first connecting end 310 and a second connecting end 320. The first connecting end 310 is slidably connected to the furnace body 100, and the second connecting end 320 is movably connected to the furnace cover 200. The opening and closing drive mechanism 400 is used to drive the opening and closing frame 300 to move back and forth relative to the furnace body 100, so that the furnace cover 200 abuts against the opening to close the heating chamber 110, or so that the furnace cover 200 moves away from the opening and exposes the bracket 210.

[0026] In practical use, the opening and closing drive mechanism 400 can drive the opening and closing frame 300 to move backward, so that the bracket 210 is exposed from the opening into the heating chamber 110, facilitating the placement and removal of the mold on the bracket 210. When the opening and closing drive mechanism 400 drives the opening and closing frame 300 to move forward, thereby allowing the furnace cover 200 to press against and close the opening, the mold on the bracket 210 is located inside the heating chamber 110, and is heated or kept warm by the heating element 120 inside the heating chamber 110, so that the mold can be maintained at a specific temperature. The second connecting end 320 is movably connected to the furnace cover 200, so that when the furnace cover 200 is closed, it can be evenly pressed against the rear side of the furnace body 100, with strong sealing performance, avoiding heat leakage, saving energy and optimizing the equipment environment.

[0027] In this embodiment, the furnace body 100 is box-shaped, and the furnace cover 200 is rectangular. The furnace cover 200 and the furnace body 100 are projected in the front-to-back direction.

[0028] In this embodiment, the furnace body 100 and the furnace cover 200 are provided with front-to-back extending slides on their lower sides. The first connecting end 310 is located on the lower side of the furnace body 100 and the furnace cover 200 and is provided with a pulley corresponding to the slide. The opening and closing frame 300 achieves front-to-back sliding through the pulley and the sliding rolling connection.

[0029] On the projection plane in the left-right direction, the opening and closing frame 300 is L-shaped. The second connecting end 320 is located on the rear side of the furnace cover 200, and the second connecting end 320 is rotatably hinged to the furnace cover 200 so that the furnace cover 200 can rotate relative to the opening and closing frame 300. In this embodiment, the rotation axis of the furnace cover 200 extends in the left-right direction, so that the furnace cover 200 can rotate up and down a certain angle around the second connecting end 320, thereby uniformly pressing against the rear side of the furnace body 100.

[0030] The opening and closing drive mechanism 400 can be a linear drive component such as a cylinder, electric push rod, hydraulic push rod, or lead screw and nut drive assembly. The opening and closing drive mechanism 400 is arranged in the front-to-back direction. When the opening and closing drive mechanism 400 extends rearward, the opening and closing frame 300 drives the furnace cover 200 to move rearward, opening the opening and exposing the bracket 210 and the mold thereon. When the opening and closing drive mechanism 400 retracts forward, the opening and closing frame 300 moves forward, and the second connecting end 320 drives the furnace cover 200 to press forward, closing the opening and placing the bracket 210 and the mold thereon inside the heating chamber 110.

[0031] To ensure uniform heating of the mold, the bracket 210 is aligned front to back with the center of the heating chamber 110. When the furnace cover 200 is closed, the bracket 210 and the mold on it are positioned precisely in the center of the heating chamber 110.

[0032] Furthermore, the heating elements 120 are arranged in pairs on both sides of the opposite end of the heating cavity 110, and a temperature measuring element 130 is provided inside the heating cavity 110. The heating elements 120 can be arranged in pairs on the left and right sides and / or the top and bottom sides of the heating cavity 110. In this embodiment, the width dimension of the mold's projection in the front-back direction is smaller than its height dimension, and it is preferable that the heating elements 120 are arranged in pairs on the left and right sides of the heating cavity 110.

[0033] The heating element 120 can be a traditional resistive heating element 120 such as a resistance wire or a resistance rod, or a non-metallic heating element 120 such as a silicon carbide rod or a silicon molybdenum rod. To achieve sufficient heat exchange and uniform heat distribution, the heating element 120 generally extends along a U-shaped path, with multiple heating elements 120 arranged in a row. In this embodiment, multiple heating elements 120 are arranged at equal intervals in the vertical direction, and the front ends of multiple heating elements 120 are fixedly inserted through the front side of the furnace body 100. A fixing plate is provided inside the heating cavity 110, and the fixing plate is fixedly connected to the rear ends of multiple heating elements 120. The temperature sensing element 130 is used to detect the temperature inside the heating cavity 110 to facilitate control of the heating or heat preservation temperature of the mold.

[0034] In this embodiment, the furnace body 100 and the furnace cover 200 are respectively provided with a latch 140 and a hook 220. The latch 140 and the hook 220 are configured to lock together so that the furnace cover 200 is pressed against the opening.

[0035] Multiple sets of the latches 140 and hooks 220 are provided, and the multiple sets of latches 140 and hooks 220 are arranged along the rear edge of the furnace body 100 and the front edge of the furnace cover 200, respectively.

[0036] Specifically, the latch 140 in this embodiment is a quick-clamping structure. A quick-clamping tool is a manual tool that achieves rapid clamping and locking through leverage. It features rapid operation, strong clamping force, and a self-locking function, and is available in various specifications at a low cost. Referring to the accompanying drawings, the latch 140 in this embodiment is located on the outside of the furnace body 100, with two latches 140 on each of the upper, lower, left, and right sides of the furnace body 100. The furnace cover 200 has corresponding locking hooks 220. After the opening and closing drive mechanism 400 drives the furnace cover 200 to close forward, the connection structure of the latches 140 and locking hooks 220 can lock and fix the furnace cover 200 and the furnace body 100, preventing the opening and closing drive mechanism 400 from losing pressure or being subjected to prolonged pressure, thus reducing its service life.

[0037] In this embodiment, the furnace body 100 has a closed end face extending along the edge of the opening. The furnace cover 200 is provided with a heat-resistant pad 230 on the side facing the heating chamber 110. The heat-resistant pad 230 is aligned front to back with the closed end face and matches each other. When the furnace cover 200 is pressed forward against the rear side of the furnace body 100, the heat-resistant pad 230 can buffer and enhance the sealing between the furnace cover 200 and the furnace body 100.

[0038] Reference Figure 5 To improve the heating and insulation effect and avoid the deterioration of the equipment environment, the furnace body 100 and furnace cover 200 in this embodiment both include a hot surface layer 510, an insulation layer 520 and an outer shell 530 arranged in sequence. The hot surface layer 510 is located on the side facing the heating chamber 110.

[0039] In actual use, the hot surface layer 510 is in direct contact with the high-temperature atmosphere inside the heating chamber 110. The hot surface layer 510 may be made of materials such as refractory bricks, refractory castables, or refractory fiber modules.

[0040] In a further embodiment, to improve the thermal insulation effect, the insulation layer 520 is multi-layered, with multiple layers of insulation layer 520 disposed between the thermal surface layer 510 and the outer shell 530. The insulation layer 520 may be, but is not limited to, made of ceramic fiber blankets or ceramic fiber boards, lightweight insulating bricks, or rock wool boards. The insulation layer 520 may also be constructed by alternately layering ceramic fiber modules and ceramic fiber blankets to form a gradient insulation. The outer shell 530 is made of steel structure steel plate.

[0041] This application also provides a mold heating process line, including multiple mold heating furnaces 10 as described above. Each mold heating furnace 10 further includes a base frame 20. The furnace body 100 is fixedly connected to the base frame 20. The multiple mold heating furnaces 10 are arranged at equal intervals in the left-right direction, and the base frames 20 of two adjacent mold heating furnaces 10 are detachably connected to each other.

[0042] The base frame 20 is a frame structure and is fixedly connected to the furnace body 100. In this embodiment, the base frame 20 is a square tube welded product, and the base frame 20 is fixed to the furnace body 100 by welding or screws.

[0043] Multiple mold heating furnaces 10 are interconnected via corresponding base frames 20. In actual use, multiple mold heating furnaces 10 are connected in series via the base frames 20, which can eliminate the waiting time gap when molds are removed and put back in for heating, and realize a continuous, stepped heating process for multiple molds.

[0044] Generally, the three mold heating furnaces 10 are arranged side by side, and are used for preheating, homogenization, and heat preservation, respectively. Specifically, a mold at room temperature is placed in the first mold heating furnace 10 for initial heating. The mold, preheated to a certain temperature in the first mold heating furnace 10, is moved to the second mold heating furnace 10 for heat preservation and homogenization to ensure a uniform temperature between the core and surface of the mold. The mold, which has fully reached the process temperature, is then moved to the third mold heating furnace 10, ready for use by the extruder.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described, those skilled in the art can make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention. All such changes, modifications, equivalent alterations or substitutions are included within the scope defined by the claims of this application, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A die heating furnace characterized by: include: The furnace body has a hollow heating chamber with a rearward-opening opening, and a heating element is installed inside the heating chamber; A furnace lid is provided at the opening, with a bracket on the front side for supporting the mold; The opening and closing frame includes a first connecting end and a second connecting end. The first connecting end is slidably connected to the furnace body in the front and rear, and the second connecting end is movably connected to the furnace cover. An opening and closing drive mechanism is used to drive the opening and closing frame to move back and forth relative to the furnace body, so that the furnace cover abuts against the opening to close the heating chamber, or to move the furnace cover away from the opening to expose the bracket.

2. The mold heating furnace of claim 1, wherein: The second connecting end is located at the rear center of the furnace cover, and the second connecting end is rotatably hinged to the furnace cover so that the furnace cover can rotate relative to the opening and closing frame.

3. The mold heating furnace of claim 1, wherein: The bracket is aligned front to back with the middle of the heating cavity, the heating elements are arranged in pairs on opposite sides of the heating cavity, and the heating cavity is equipped with a temperature measuring element.

4. The mold heating furnace of claim 1, wherein: The furnace body is box-shaped, and the furnace cover is rectangular. The projection of the furnace cover onto the furnace body in the front-to-back direction coincides with that of the furnace body.

5. The mold heating furnace of claim 4, wherein: The furnace body and furnace cover are respectively provided with a latch and a hook, which are configured to lock together so that the furnace cover is pressed against the opening.

6. The mold heating furnace of claim 5, wherein: The latches and hooks are provided in multiple sets, and the multiple sets of latches and hooks are arranged along the rear edge of the furnace body and the front edge of the furnace cover, respectively.

7. The mold heating furnace of claim 4, wherein: The furnace body has a closed end face extending along the edge of the opening, and the side of the furnace cover facing the heating chamber is provided with a heat-resistant pad, which is aligned and matched with the closed end face.

8. The mold heating furnace of claim 1, wherein: The furnace body and furnace cover each include a hot surface layer, an insulation layer and an outer shell arranged in sequence, with the hot surface layer located on the side facing the heating chamber.

9. The mold heating furnace of claim 8, wherein: The insulation layer consists of multiple layers, which are disposed between the thermal surface layer and the outer shell.

10. A mold heating treatment line characterized by: The invention includes multiple mold heating furnaces as described in any one of claims 1 to 9, wherein the mold heating furnace further includes a base frame, the furnace body is fixedly connected to the base frame, the multiple mold heating furnaces are arranged at equal intervals along the left and right directions, and the base frames of two adjacent mold heating furnaces are detachably connected to each other.

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