Aluminum alloy blank preheating device for extrusion molding

Abstract

The present application relates to the technical fields of metal heating, in particular to an aluminum alloy blank preheating device for aluminum alloy extrusion forming; comprising: a base frame; a heating bin arranged on the base frame; a transmission module arranged in the heating bin; a heating module arranged on the transmission module; the heating module is provided with a plurality of heating units and a plurality of first adjusting units capable of driving the plurality of heating units to adjust; the plurality of heating units are surrounded to form a heating cavity capable of heating the blank; an auxiliary heating module is detachably arranged at the adjusting end of the first adjusting unit, and the auxiliary heating module is provided with a heating unit capable of continuously heating and a heat conduction unit capable of transmitting the heat energy of the heating unit to the blank; the present application can not only adaptively heat blanks of different sizes, but also has high heating efficiency and good effect.

Description

Technical Field

[0001] This invention relates to the field of metal heating technology, specifically to a preheating device for aluminum alloy billets used in aluminum alloy extrusion forming. Background Technology

[0002] In aluminum alloy extrusion molding, to improve the plasticity and extrusion efficiency of aluminum alloy materials, preheating of the aluminum alloy billet is usually required to bring it to a suitable extrusion temperature (generally 400℃~500℃). Traditional preheating methods for aluminum alloy billets mainly employ gas furnaces, resistance furnaces, or induction heating equipment for overall heating. However, existing preheating devices often have the following problems during the heating process:

[0003] First, the temperature control accuracy during preheating is low, especially under continuous feeding or intermittent operation conditions, which easily leads to uneven heating or localized overheating, resulting in excessive temperature differences between the inside and outside of the aluminum billet, affecting the subsequent extrusion quality and product consistency. Second, existing preheating devices generally have a simple structure, limited heating efficiency, and long heating time, making it difficult to meet the dual requirements of modern high-speed extrusion production lines for preheating cycle time and temperature uniformity. In addition, some equipment suffers from energy waste and significant heat loss during operation, reducing overall energy utilization efficiency.

[0004] Especially in actual production, due to the wide variety of aluminum alloy materials and the large differences in specifications and dimensions, existing preheating equipment often struggles to achieve rapid and precise temperature adjustment and thermal field matching according to different specifications of billets, which limits the versatility and intelligence of the equipment and hinders the further development of the aluminum alloy profile industry. Summary of the Invention

[0005] To address the aforementioned problems, a preheating device for aluminum alloy billets used in aluminum alloy extrusion molding is provided. By proposing a device that can not only efficiently heat the billet but also automatically adjust the heating range according to the size of the billet, the technical problems of existing heating equipment being unable to adapt to billets of various sizes, having low heating efficiency, and easily leading to uneven internal and external heating are solved.

[0006] To address the problems of existing technologies, this invention provides a preheating device for aluminum alloy billets used in aluminum alloy extrusion molding, for preheating billets, comprising: a base frame; a heating chamber disposed on the base frame; a transmission module disposed parallel to the heating chamber, the transmission module having a tray capable of supporting the billet; a heating module disposed on the transmission module; the heating module having multiple sets of heating units and a first adjustment unit capable of adjusting the multiple sets of heating units, the multiple sets of heating units surrounding each other to form a heating cavity capable of heating the billet; and an auxiliary heating module detachably disposed at the adjustment end of the first adjustment unit, the auxiliary heating module having a heating unit capable of absorbing heat overflowing from the heating units and a heat-conducting unit capable of transferring the heat energy of the heating units toward the billet.

[0007] Preferably, the heating unit is provided with a rectangular coil arranged in an S-shape and a control element for controlling the opening and closing of the coil.

[0008] Preferably, the heating unit further includes a stabilizing frame capable of limiting the position of the coil. Two stabilizing frames are provided, and the two stabilizing frames are arranged opposite each other on both sides of the regulating element along the long side direction of the regulating element.

[0009] Preferably, the first adjustment unit includes a guide frame disposed on the control element and a linear driver capable of driving the guide frame to move axially.

[0010] Preferably, the guide frame is fixedly mounted on the control element parallel to the long side of the control element; the guide frame is also vertically mounted with two opposing guide rods, the rod portions of which pass through the heating chamber and slide in cooperation with the heating chamber; the linear actuator is vertically mounted outside the heating chamber and its output shaft passes through the heating chamber and is fixedly connected to the guide frame.

[0011] Preferably, the heating module further includes a ranging unit capable of real-time monitoring of the adjustment distance of the heating unit; the ranging unit is vertically disposed on the outer wall of the heating chamber and the ranging end passes through the heating chamber and is vertically disposed towards the blank; multiple sets of the ranging unit are provided and are configured one-to-one with multiple sets of heating units.

[0012] Preferably, the heating unit is provided with a heating tube capable of generating heat energy and a connecting unit capable of horizontally fixing the heating tube to the adjusting end of the first adjusting unit.

[0013] Preferably, the connecting unit includes a sliding sleeve, adjusting columns, a first locking element, an adjusting cylinder, and a second locking element; two adjusting columns are provided, and the two adjusting columns are coaxially fixed on both sides of the sliding sleeve; two adjusting cylinders are provided, and the two adjusting cylinders are coaxially fixed on the outside of the two adjusting columns respectively; the first locking element is screwed onto the side wall of the sliding sleeve; two second locking elements are provided, and the two second locking elements are screwed onto the side walls of the two adjusting cylinders respectively.

[0014] Preferably, the transmission module further includes a first guide rail and a second guide rail capable of unidirectionally guiding the tray, and a second adjustment unit capable of adjusting the guide spacing between the first guide rail and the second guide rail.

[0015] The advantages of this invention compared to the prior art are:

[0016] 1. This invention, through the cooperation of the heating unit and the first adjustment unit, enables flexible adjustment of the heating cavity size according to aluminum alloy billets of different sizes, so that the heating unit and the billet maintain a reasonable distance, ensuring uniform heating, avoiding local overheating or underheating, and improving preheating quality.

[0017] 2. This invention, through the cooperation of a heating unit and a heat-conducting unit, achieves further heat replenishment and uniform distribution on the surface of the billet, maximizes the utilization of thermal energy, and improves the overall heating rate and thermal uniformity of the billet.

[0018] 3. The present invention can precisely control the movement of the tray between the first guide rail and the second guide rail through the transmission module. At the same time, the spacing between the guide rails can be adjusted according to the size of the billet through the second adjustment unit, which enhances the adaptability and flexibility of the device and meets the production needs of preheating billets of various specifications.

[0019] 4. By winding the heating coil in an S-shape and setting a gap, the heating unit has self-adjusting capability while forming the heating surface, which effectively improves the forming accuracy of the heating cavity, avoids mutual interference between multiple coils, and improves the stability of the thermal field and heating efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional diagram of an aluminum alloy billet preheating device for aluminum alloy extrusion molding.

[0021] Figure 2 This is a side view of an aluminum alloy billet preheating device for aluminum alloy extrusion molding.

[0022] Figure 3 yes Figure 2 A magnified view of section B.

[0023] Figure 4 yes Figure 2 Sectional view at point AA.

[0024] Figure 5 yes Figure 4 A magnified view of a portion of point C.

[0025] Figure 6 yes Figure 4 A magnified view of a portion of point D.

[0026] Figure 7 This is a three-dimensional view of a preheating device for aluminum alloy billets used in aluminum alloy extrusion molding, excluding the heating chamber.

[0027] Figure 8 This is an exploded view of the heating module in a preheating device for aluminum alloy billets used in aluminum alloy extrusion molding.

[0028] Figure 9 This is a top view of an aluminum alloy billet preheating device for aluminum alloy extrusion molding.

[0029] Figure 10 yes Figure 9 A three-dimensional sectional view of the section at EE.

[0030] The numbers on the map are:

[0031] 1. Base frame;

[0032] 2. Heating chamber;

[0033] 3. Transmission module; 31. Tray; 32. First guide rail; 33. Second guide rail; 34. Second adjustment unit; 341. Sliding seat; 342. Slider; 343. Third locking element; 344. First support frame;

[0034] 4. Heating module; 41. Heating unit; 411. Coil; 412. Control element; 413. Stabilizer; 42. First adjustment unit; 421. Guide frame; 422. Linear driver; 423. Guide rod; 43. Distance measuring unit;

[0035] 5. Auxiliary heating module; 51. Heating unit; 511. Heating tube; 512. Connecting unit; 5121. Sliding sleeve; 5122. Adjusting column; 5123. First locking element; 5124. Adjusting cylinder; 5125. Second locking element; 52. Heat conduction unit; 521. Fan. Detailed Implementation

[0036] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0037] See Figures 1 to 10The image shows a preheating device for aluminum alloy billets used in aluminum alloy extrusion molding, for preheating the billet, comprising: a base frame 1; a heating chamber 2, the heating chamber 2 being arranged parallel to the long side of the base frame 1; a transmission module 3, arranged parallel to the long side of the heating chamber 2 within the heating chamber 2, the transmission module 3 having a tray 31 capable of supporting the billet; a heating module 4, arranged horizontally on the transmission module 3 along the transmission direction; the heating module 4 having multiple sets of heating units 41 and a first adjustment unit 42 capable of adjusting the multiple sets of heating units 41; the multiple sets of heating units 41 enclosing each other to form a heating cavity capable of heating the billet; and an auxiliary heating module 5, detachably disposed at the adjustment end of the first adjustment unit 42, the auxiliary heating module 5 having a heating unit 51 capable of continuous heating and a heat-conducting unit 52 capable of transferring the heat energy of the heating unit 51 toward the billet.

[0038] When preheating of aluminum alloy billets is required, the billets are first placed horizontally on the tray 31. Then, the transmission module 3 is activated, transporting the billets from the tray 31 towards the heating module 4 along the transmission path, thus precisely guiding the billets to the heating module 4 for heating. The heating module 4 has multiple heating units 41, which are controlled by a first adjustment unit 42. The size of the heating cavity formed by these units is automatically adjusted according to the specific dimensions of the billets, ensuring a precise match between the heating cavity and the dimensions of the transported billets. Once the first adjustment unit 42 has completed its adjustment and the heating cavity formed by the multiple heating units 41 is adapted to the billet size, the adjustment stops.

[0039] To further improve preheating efficiency and enhance heat utilization, an auxiliary heating module 5, detachably mounted at the end of the first adjustment unit 42, is simultaneously pushed closer to the periphery of the billet during the operation of the first adjustment unit 42. The auxiliary heating module 5 is equipped with a heating unit 51, which is heated by a heat source provided by the heating module 4. The heat generated by the heating unit 51 is efficiently conducted to the surface of the billet through a heat-conducting unit 52 located inside the auxiliary heating module 5. This further improves the efficiency of heat energy application to the billet while ensuring heating uniformity, and promotes the aluminum alloy billet to be fully heated and meet the predetermined heating requirements.

[0040] It can automatically adjust the size of the heating chamber according to the size of the aluminum alloy billet, avoiding uneven heating caused by the mismatch between the heating space and the billet size. At the same time, the auxiliary heating module 5 efficiently guides and supplements the heat, improving the overall heating efficiency, shortening the preheating time, improving the uniformity of billet temperature, and significantly improving the stability of subsequent extrusion molding processes and product quality.

[0041] See Figure 8 As shown: The heating unit 41 is provided with a rectangular coil 411 arranged in an S-shape and a regulating element 412 for controlling the opening and closing of the coil 411.

[0042] The heating unit 41 is provided in four groups, which are arranged parallel to the long side of the heating chamber 2 inside the heating chamber 2. The four groups of heating units 41 are respectively arranged on the four sides of the inner wall of the heating chamber 2, thereby forming a heating cavity that can heat the billet. The first adjustment unit 42 is provided in four groups and is arranged one-to-one with the four groups of heating units 41.

[0043] By setting the heating coil 411 into a rectangular coil 411 structure by reciprocating winding in an S-shape, not only can an effective heating surface with a wide coverage and uniform heating be formed, but also during the winding process, a reasonable gap is reserved between the coils 411 for multiple sets of coils 411 to interpenetrate, avoiding thermal interference and magnetic field interference caused by the coils 411 being too close together.

[0044] This design not only ensures that each group of coils 411 forms a continuous and complete heating surface, but also enables an interpenetrating layout between multiple heating modules 4. This allows the overall heating module 4 to adaptively adjust the spatial dimensions of the heating cavity according to the size of different blanks, ensuring precise matching between the heating area and the blank contour, effectively improving heating efficiency and temperature uniformity. The control element 412 controls the energizing and shutting down of each group of coils 411, flexibly starting and stopping the corresponding coil 411 unit according to actual working conditions, thereby precisely controlling the heating process of the blank and further achieving energy saving and consumption reduction.

[0045] The coil 411 and the control element 412 are both existing technologies and will not be described in detail here.

[0046] See Figure 3 As shown: The heating unit 41 also includes a stabilizing frame 413 that can limit the position of the coil 411. Two stabilizing frames 413 are provided, and the two stabilizing frames 413 are arranged opposite to each other on both sides of the regulating element 412 along the long side direction of the regulating element 412.

[0047] The stabilizer 413 consists of a connecting frame and a limiting cylinder vertically disposed at the bottom of the connecting frame.

[0048] The two stabilizing frames 413 are respectively disposed on both sides of the regulating element 412, mainly used to further limit and fix the heating coils 411 disposed on both sides, thereby effectively preventing the coils 411 from shaking, shifting, or becoming unstable during force or adjustment. By rigidly constraining the coils 411 with the two stabilizing frames 413, it can be ensured that the heating coils 411 always move stably and smoothly along the set trajectory during the position adjustment process driven by the first adjusting unit 42, avoiding problems such as heating cavity size deviation, uneven heating area, or affecting heating accuracy caused by the shaking of the coils 411.

[0049] See Figure 2 , Figure 5 and Figure 8 As shown: The first adjustment unit 42 includes a guide frame 421 disposed on the control element 412 and a linear actuator 422 capable of driving the guide frame 421 to move axially; the guide frame 421 is fixedly disposed parallel to the control element 412 along the long side direction; two oppositely disposed guide rods 423 are also vertically disposed on the guide frame 421, and the rod portion of the guide rod 423 passes through the heating chamber 2 and is slidably engaged with the heating chamber 2; the linear actuator 422 is vertically disposed outside the heating chamber 2 and its output shaft passes through the heating chamber 2 and is fixedly connected to the guide frame 421.

[0050] When it is necessary to dynamically adjust the heating space within the heating chamber according to aluminum alloy billets of different sizes, thereby changing the heating distance between each heating unit 41 and the billet, simply connect an external power source to drive the linear actuator 422. The linear actuator 422 is preferably an electric push rod, but is not limited to this type. During operation, the output shaft of the linear actuator 422 extends along a preset direction, simultaneously driving the guide frame 421 connected to it to move synchronously. During operation, the guide frame 421 drives the fixedly connected heating units 41 to slide synchronously along the horizontal direction closer to the billet. Once the heating unit 41 is pushed to the preset position, the distance between the heating unit 41 and the billet is adjusted. This achieves the effect of real-time adjustment of the heating chamber size according to different billet specifications, ensuring that the heating unit 41 can efficiently and accurately act on the billet surface, improving the uniformity and thermal efficiency of preheating.

[0051] See Figure 1 and Figure 8 As shown: The heating module 4 also includes a ranging unit 43 that can monitor the adjustment distance of the heating unit 41 in real time; the ranging unit 43 is vertically arranged on the outer wall of the heating chamber 2 and the ranging end passes through the heating chamber 2 and is vertically arranged towards the blank; multiple sets of the ranging unit 43 are provided and are arranged one-to-one with multiple sets of heating units 41.

[0052] When the distance between the heating unit 41 and the aluminum alloy blank is adjusted by the first adjustment unit 42, in order to ensure that each heating unit 41 can be accurately adjusted to the set position and to ensure heating uniformity, multiple sets of distance measuring units 43 corresponding to each heating unit 41 are provided.

[0053] The ranging unit 43 can monitor the actual distance between the corresponding heating unit 41 and the surface of the billet in real time, and feed the ranging data back to the control system. Based on the real-time collected distance data, the control system dynamically adjusts the driving stroke of the first adjusting unit 42, so that the heating unit 41 moves precisely to the preset position along the predetermined path, thereby ensuring that the size of the heating cavity is strictly matched with the size of the billet.

[0054] See Figure 7 and Figure 8 As shown: The heating unit 51 is provided with a heating tube 511 that can absorb the heat overflowing from the heating unit and a connecting unit 512 that can horizontally fix the heating tube 511 to the adjusting end of the first adjusting unit 42.

[0055] The heating element 511 can be a steel strip.

[0056] Two connecting units 512 are provided, and each is fixedly installed on the guide rod 423. The heating element 511 is horizontally spanned between the two guide rods 423 through the connecting unit 512, and the limiting and guiding function of the connecting unit 512 allows the heating element 511 to slide and adjust along the axial direction of the guide rod 423.

[0057] In practical work, when it is necessary to flexibly adjust the heating area of ​​the heating tube 511 according to the size, position, or preheating requirements of the aluminum alloy billet, the operator only needs to drive the connecting unit 512 to slide along the axis of the guide rod 423, thereby precisely positioning the heating tube 511 at the required heating position, ensuring that the heating area corresponds precisely to the position of the billet, and improving the uniformity and thermal efficiency of heating. The heating tube 511 enables effective utilization of the edge areas of the heating unit 41 that are not in direct contact with the aluminum alloy billet when the heating unit 41 is dynamically adjusted according to the size of the billet and the heating unit 41 is in operation, through its coordinated operation with the heating tube 511. Specifically, during the heating process, the power consumption of the non-contact area is not wasted, but is conducted to the heating tube 511 arranged in that area, allowing the heating tube 511 to be heated synchronously and continuously release additional heat energy. During the operation of the heating unit 41, the heating tube 511 can further enhance the overall heat distribution inside the heating chamber 2, especially to compensate and improve the temperature of the edge area of ​​the heating unit 41, thereby ensuring that the overall temperature field inside the heating chamber 2 is stable and uniform, and keeping the temperature inside the chamber at a preset high temperature.

[0058] See Figure 3 As shown: The connecting unit 512 includes a sliding sleeve 5121, an adjusting column 5122, a first locking member 5123, an adjusting cylinder 5124, and a second locking member 5125; two adjusting columns 5122 are provided, and the two adjusting columns 5122 are coaxially fixedly disposed on both sides of the sliding sleeve 5121; two adjusting cylinders 5124 are provided, and the two adjusting cylinders 5124 are coaxially fixedly disposed outside the two adjusting columns 5122 respectively; the first locking member 5123 is screwed to the side wall of the sliding sleeve 5121; two second locking members 5125 are provided, and the two second locking members 5125 are screwed to the side walls of the two adjusting cylinders 5124 respectively.

[0059] The adjusting cylinder 5124 is used to limit and lock the heating tube 511, thereby ensuring that the heating tube 511 can always be horizontally positioned between the two guide rods 423 in the limiting frame of the connecting unit 512.

[0060] When it is necessary to adjust the axial sliding of the heating element 511 along the axis of the guide rod 423, the operator only needs to loosen the first locking member 5123 set on the sliding sleeve 5121 to release the limiting locking state between the sliding sleeve 5121 and the guide rod 423. At this time, under the guidance of the guide rod 423, the heating element 511 can be driven to slide smoothly along its axis, thereby accurately adjusting the axial position of the heating element 511 according to the actual heating requirements.

[0061] Similarly, when it is necessary to adjust the heating height of the heating tube 511, simply loosen the second locking member 5125 set on the adjusting cylinder 5124 to release the limiting locking state of the adjusting cylinder 5124, and the heating tube 511 can be driven to slide longitudinally along the adjusting cylinder 5124 in the vertical direction, so as to flexibly adjust the height distance between the heating tube 511 and the blank to be heated according to the actual working conditions.

[0062] After completing the above position or height adjustment, tighten the first locking member 5123 and the second locking member 5125 to reliably lock the heating element 511 in the current adjustment position, ensuring the stability of the heating element 511 during subsequent heating, avoiding displacement or deviation, and ensuring heating uniformity and heating efficiency.

[0063] See Figure 10 As shown: The heat conduction unit 52 is specifically a fan 521; the fan 521 is fixedly arranged parallel to the long side of the heating chamber 2 on the inner wall of the heating chamber 2 and the air supply end is arranged facing the blank.

[0064] The fan 521 enables the directional guidance of the heat generated by the heating unit 51, precisely and efficiently transferring the heat towards the surface of the billet. When in operation, the fan 521 outputs controlled airflow to rapidly and centrally blow the high-temperature hot air accumulated around the heating unit 51 to the area where the billet is located, thereby preventing ineffective diffusion or loss of heat during conduction and ensuring that heat is applied to the billet to the maximum extent, achieving optimal heat utilization.

[0065] In addition, by reasonably configuring the air volume, air speed and spray angle of the fan 521, the coverage and temperature distribution of hot air can be flexibly adjusted according to the requirements of billets of different specifications and shapes, thereby further improving the uniformity and efficiency of heating, effectively shortening the overall heating time of the billets, and enhancing the continuity and stability of the preheating process.

[0066] See Figure 2 , Figure 7 and Figure 8 As shown: The transmission module 3 also includes a first guide rail 32 and a second guide rail 33 capable of unidirectionally guiding the tray 31, and a second adjustment unit 34 capable of adjusting the guide spacing between the first guide rail 32 and the second guide rail 33; the tray 31 is horizontally slidably disposed between the first guide rail 32 and the second guide rail 33; two sets of the second adjustment units 34 are provided, and the two sets of second adjustment units 34 are vertically disposed on both sides of the base frame 1; the first guide rail 32 and the second guide rail 33 are horizontally disposed across the two sets of second adjustment units 34 along the long side of the base frame 1.

[0067] The transmission module 3 further includes a linear actuator 422 capable of driving the tray 31 to be horizontally transmitted along the guiding direction of the first guide rail 32; the linear actuator 422 is preferably an electric push rod, but is not limited to an electric push rod, and can also be a screw module, cylinder or other mechanism capable of linear drive function to achieve stable horizontal movement of the tray 31.

[0068] When it is necessary to drive the tray 31 to slide along the guiding direction of the first guide rail 32 and the second guide rail 33, simply activate the linear actuator 422 to drive the tray 31 to carry the billet and slide smoothly along the guide rail direction until the tray 31 and the billet are transferred as a whole to the heating module 4, and the heating module 4 completes the preheating operation of the aluminum alloy billet.

[0069] To accommodate the transport requirements of aluminum alloy billets of different sizes, a second adjustment unit 34 is provided to adjust the guide spacing between the first guide rail 32 and the second guide rail 33. When it is necessary to match the transport path according to the size of the billet, simply activate the second adjustment unit 34 to simultaneously drive the first guide rail 32 and the second guide rail 33 to move closer or further apart, thereby flexibly adjusting the spacing between them to match the width of the billet to be transported. This ensures stable guidance of the billet during transport and avoids offset or jamming caused by mismatch between the billet size and the track spacing.

[0070] See Figure 6 As shown: The second adjustment module unit includes a sliding seat 341, a slider 342, a third locking member 343, and a first support frame 344; the sliding seat 341 is horizontally fixed on the base frame 1 via the first support frame 344 and is perpendicular to the sliding direction of the tray 31; there are two sliders 342, which are slidably disposed on the sliding seat 341, and the two sliders 342 are respectively fixedly connected to the first guide rail 32 and the second guide rail 33; the third locking member 343 is screwed onto one side of the slider 342 to lock the slider 342 and the sliding seat 341.

[0071] In operation, when it is necessary to adjust the guide distance between the first guide rail 32 and the second guide rail 33 according to the dimensions of the aluminum alloy billet and the supporting pallet 31, simply activate the third locking member 343 to release the locking of the two sliders 342 respectively located on the first guide rail 32 and the second guide rail 33. After unlocking, the operator can manually drive the first guide rail 32 and the second guide rail 33 to move laterally along the sliding track on the base according to the actual transmission requirements. During the adjustment process, the distance between the two guide rails can be precisely controlled according to the width of the pallet 31 and the size of the billet, ensuring stable support and accurate guidance of the billet during transmission. After the adjustment is completed, the third locking member 343 is activated again to re-lock the two sliders 342, thereby achieving reliable fixation of the new position of the guide rails and preventing offset or shaking caused by loosening of the rails during subsequent transmission.

[0072] This invention can adaptively heat blanks of different sizes with high heating efficiency and good effect.

[0073] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A preheating device for aluminum alloy billets used in aluminum alloy extrusion molding, for preheating the billet, characterized in that, The utility model relates to a kind of heating device, including: Base frame; Heating bin, which is arranged on the base frame; Transmission module, which is arranged in the heating bin, the transmission module is provided with the tray capable of supporting blank; Heating module, which is arranged on the transmission module;The heating module is provided with a plurality of heating units and a plurality of first adjusting units capable of driving the plurality of heating units to adjust;The plurality of heating units are enclosed to form a heating cavity capable of heating the blank; Auxiliary heating module, which is detachably arranged at the adjusting end of the first adjusting unit, the auxiliary heating module is provided with a heating unit capable of absorbing the overflow heat of the heating unit and a heat conduction unit capable of transmitting the heat energy of the heating unit to the blank; Wherein, the heating unit is provided with a rectangular coil arranged in an S-shaped reciprocating bending manner and a control element for controlling the opening and closing of the coil, and the coils are reasonably reserved with gaps for the mutual insertion of the plurality of coils; The first adjusting unit includes a guide frame arranged on the control element and a linear driver capable of driving the guide frame to move axially; The heating unit is provided with a heating tube capable of generating heat energy and a connecting unit capable of horizontally fixing the heating tube to the adjusting end of the first adjusting unit; The connecting unit includes a sliding sleeve, an adjusting column, a first locking member, an adjusting cylinder and a second locking member; The adjusting column is provided with two, and the two adjusting columns are coaxially fixed on both sides of the sliding sleeve; The adjusting cylinder is provided with two, and the two adjusting cylinders are coaxially fixed outside the two adjusting columns respectively; The first locking member is screw-connected to the side wall of the sliding sleeve; The second locking member is provided with two, and the two second locking members are screw-connected to the side walls of the two adjusting cylinders respectively.

2. The aluminum alloy billet preheating device for aluminum alloy extrusion forming according to claim 1, characterized by, The heating unit further includes a stabilizing frame capable of limiting the coil, the stabilizing frame is provided with two, and the two stabilizing frames are arranged on both sides of the control element along the long side direction of the control element.

3. The aluminum alloy billet preheating device for aluminum alloy extrusion forming according to claim 2, characterized by, The guide frame is fixedly arranged on the control element in parallel along the long side direction of the control element, and two guide rods are vertically arranged on the guide frame in opposition and the rod portions of the guide rods pass through the heating bin and are in sliding fit with the heating bin; The linear driver is vertically arranged outside the heating bin, and the output shaft is fixedly connected with the guide frame through the heating bin.

4. The aluminum alloy billet preheating device for aluminum alloy extrusion molding according to claim 1, characterized by The heating module further includes a distance measuring unit capable of monitoring the adjusting distance of the heating unit in real time; The distance measuring unit is vertically arranged on the outer wall of the heating bin, and the distance measuring end passes through the heating bin and is vertically arranged towards the blank; The distance measuring unit is provided with a plurality of groups and is arranged one-to-one with the plurality of heating units.

5. The aluminum alloy billet preheating device for aluminum alloy extrusion molding according to claim 1, characterized by The transmission module further includes a first guide rail and a second guide rail capable of unidirectionally guiding the tray, and a second adjusting unit capable of adjusting the guide spacing between the first guide rail and the second guide rail.

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