Intelligent temperature control precision casting furnace and operation method thereof

Abstract

The invention discloses an intelligent temperature control precision casting furnace and an operation method thereof, and belongs to the technical field of precision casting furnaces, the intelligent temperature control precision casting furnace comprises a rack, the top of the rack is fixedly connected with a heating furnace, the top of the heating furnace is fixedly connected with an air cylinder, and the jacking end of the air cylinder penetrates into the heating furnace and is connected with a connecting frame; and the clamping assembly comprises a positioning clamping plate, the positioning clamping plate is fixedly connected to the bottom of the connecting frame, a guide sliding block is slidably connected to the interior of the positioning clamping plate, and an adjusting plate is fixedly connected to the bottom of the guide sliding block. Through mutual cooperation of the air cylinder and the clamping assembly, the crucible can be placed in a suspended mode, so that it is ensured that the crucible is located at the dead center position of the heating furnace body, it can be ensured that the crucible is evenly heated in all directions, it is ensured that materials in the crucible are rapidly heated and melted, and the use efficiency of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of precision casting furnaces, and in particular to an intelligent temperature-controlled precision casting furnace and an operating method thereof. Background Art

[0002] A precision casting furnace is a device used to produce precision castings. It is mainly used in fields such as materials science and metallurgical engineering technology. It is one of the commonly used auxiliary equipment in mechanical manufacturing. It uses induction heating in a vacuum environment to melt the metal raw materials and pour them into a mold to produce the required castings. The key technologies of precision casting furnaces include temperature control and precise control of the casting process to ensure that the produced castings have high precision and good mechanical properties.

[0003] Upon investigation, a Chinese invention patent discloses a precision casting furnace (publication number: CN222670653U), which aims to solve the problem that existing casting furnaces lack an auxiliary limiting mechanism for crucibles and the placement of the crucible is inconvenient to control, resulting in uneven heating of the material. The technical approach adopted is that a base for supporting and limiting the holding container is provided in the heating chamber, a slide is provided on the base, a limiting mechanism is provided between the slide and the base, and a groove and a limiting rod are provided on the slide; a clamping mechanism for the holding container is provided on the base through a mounting seat, and the clamping mechanism corresponds to the position of the slide. By providing a base in the heating chamber, placing the holding container on the slide, and providing a limiting mechanism between the slide and the base, the setting of the limiting mechanism makes it easy for the staff to determine the placement position of the holding container, so that the holding container is located in the middle of the heating chamber, so that the material inside is heated evenly, and the heating time is shortened.

[0004] Although the above patent positions the container in the middle, it is mainly positioned at the bottom of the heating chamber and not in the center of the heating chamber space. Moreover, since the container is at the bottom, the bottom of the container needs to contact the bottom slide, which makes it impossible to heat the bottom of the container quickly, further causing the bottom of the container to not be heated evenly.

[0005] Therefore, the present invention provides an intelligent temperature-controlled precision casting furnace and an operating method thereof to solve the above problems. Summary of the Invention

[0006] (1) Technical problems solved

[0007] The present invention provides an intelligent temperature-controlled precision casting furnace and an operating method thereof, aiming to solve the problems raised in the background technology.

[0008] (2) Technical solution

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: an intelligent temperature-controlled precision casting furnace and an operating method thereof, comprising a frame, a heating furnace being fixedly connected to the top of the frame, a cylinder being fixedly connected to the top of the heating furnace, and a jacking end of the cylinder penetrating into the interior of the heating furnace and connected to a connecting frame;

[0010] The clamping assembly and the crucible, the clamping assembly includes a positioning clamping plate, and the positioning clamping plate is fixedly connected to the bottom of the connecting frame, the interior of the positioning clamping plate is slidably connected to a guide slider, and the bottom of the guide slider is fixedly connected to an adjustment plate, the center thread of the adjustment plate is connected to a threaded rod, and the other end of the threaded rod is rotatably connected to a movable clamping plate, and the positioning clamping plate and the movable clamping plate cooperate with each other to complete the clamping of the top end of the crucible.

[0011] As a preferred technical solution of the present application, the connecting frame is distributed in a three-pronged shape, and the bottom of each fork is fixedly connected to a group of clamping components, which are used to clamp and fix the top of the crucible. A flange ring is provided at the bottom of the fork of the connecting frame, and an adjustment hole group is opened at the horizontal end of the positioning splint corresponding to the flange ring positioning hole.

[0012] As a preferred technical solution of the present application, the cross section of the positioning splint is L-shaped, a limiting slide groove is provided above the horizontal end of the positioning splint, and a pressure plate is provided for sliding inside the limiting slide groove.

[0013] As a preferred technical solution of the present application, the top of the guide slider is fixedly connected to a pressure plate by bolts, the height of the guide slider is less than the thickness of the positioning clamp, and the upper surface of the guide slider is lower than the bottom of the limiting slide groove, and the side where the pressure plate and the limiting slide groove contact each other is provided with anti-slip grooves.

[0014] As a preferred technical solution of the present application, the top end of the adjustment plate slides against the lower surface of the horizontal end of the positioning splint, the upper surface of the movable splint slides against the lower surface of the horizontal end of the positioning splint, and the movable splint has an arc-shaped structure on the side close to the vertical end of the positioning splint.

[0015] As a preferred technical solution of the present application, the movable splint is fixedly connected to two guide shafts on one side away from the vertical end of the positioning splint, and the adjustment plate is provided with guide holes corresponding to the guide shafts, and the guide shafts are slidably inserted into the guide holes of the adjustment plate.

[0016] An operating method of an intelligent temperature-controlled precision casting furnace comprises the following steps:

[0017] Step 1: Place the crucible inside the heating furnace;

[0018] Step 2: Control the cylinder to drive the connecting frame and the clamping assembly to descend, so that the positioning clamping plate and the movable clamping plate respectively abut against the outer edge of the top of the crucible;

[0019] Step 3: Rotate the threaded rod to drive the movable clamping plate to move toward the positioning clamping plate to complete the clamping and fixing of the top end of the crucible;

[0020] Step 4: Control the cylinder to lift the connecting frame so that the crucible is suspended in the center of the heating furnace cavity;

[0021] Step 5: Start the heating furnace to uniformly heat the suspended crucible in a circumferential direction.

[0022] In step three, the horizontal position of the guide slider in the positioning clamp is changed by sliding the adjustment plate, and the position of the adjustment plate is locked by the pressure plate to adapt to the clamping requirements of crucibles of different diameters.

[0023] In step 4, the three points of the tripod-shaped connecting frame are lifted synchronously to keep the crucible flange ring plane horizontal, ensuring that the crucible axis coincides with the heating furnace cavity axis.

[0024] During the heating process in step five, the arc-shaped clamping surface of the movable clamping plate and the positioning clamping plate form a three-point contact clamping to avoid structural stress concentration caused by the crucible's thermal expansion.

[0025] (3) Beneficial effects

[0026] The beneficial effects of this application are:

[0027] 1. The invention enables the crucible to be placed in a suspended position through the cooperation between the cylinder and the clamping assembly, thereby ensuring that the crucible is in the center of the heating furnace body, which can ensure that the crucible is heated evenly in all directions, thereby ensuring the rapid heating and melting of the internal material, and improving the efficiency of the device.

[0028] 2. The invention provides an adjustable clamping assembly so that it can clamp and position crucibles of different sizes, thereby improving the adaptability of the device. It can effectively adapt to crucibles of different diameters and wall thicknesses for clamping and positioning, and complete the heating and melting treatment of different quantities of objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the internal structure of the heating furnace body of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall appearance of the present invention;

[0031] Figure 3 This is a schematic diagram of the cross-sectional structure of the crucible according to the present invention;

[0032] Figure 4 It is a schematic diagram of the exploded structure of the clamping assembly of the present invention.

[0033] In the picture:

[0034] 1. Frame; 2. Heating furnace; 3. Cylinder; 31. Connecting frame; 4. Clamping assembly; 41. Positioning splint; 42. Guide slider; 43. Pressing plate; 44. Adjusting plate; 45. Threaded rod; 46. Movable splint; 47. Guide shaft; 5. Crucible. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] like Figure 1-4 As shown, the present invention provides an intelligent temperature-controlled precision casting furnace and an operating method thereof, comprising a frame 1, a heating furnace 2 is fixedly connected to the top of the frame 1, a cylinder 3 is fixedly connected to the top of the heating furnace 2, and the jacking end of the cylinder 3 passes through the interior of the heating furnace 2 and is connected to a connecting frame 31; a clamping assembly 4 and a crucible 5, the clamping assembly 4 comprises a positioning clamping plate 41, and the positioning clamping plate 41 is fixedly connected to the bottom of the connecting frame 31, the interior of the positioning clamping plate 41 is slidably connected to a guide slider 42, and the bottom of the guide slider 42 is fixedly connected to an adjusting plate 44, and the center of the adjusting plate 44 is threadedly connected to The threaded rod 45, the other end of the threaded rod 45 is rotatably connected to the movable clamping plate 46, and the positioning clamping plate 41 and the movable clamping plate 46 cooperate with each other to complete the clamping of the top end of the crucible 5. After the top edge of the crucible 5 is clamped by the positioning clamping plate 41 and the movable clamping plate 46, the lifting and lowering adjustment of the cylinder 3 can drive the clamping assembly 4 to be lifted up and down under the connection of the connecting frame 31, thereby completing the lifting and lowering adjustment of the crucible 5 until the crucible 5 is in the center position of the furnace body of the heating furnace 2, thereby ensuring uniform heating of the crucible 5, avoiding the existence of heating dead corners in the crucible 5, and improving its heating uniformity.

[0037] Furthermore, the connecting frame 31 is distributed in a three-pronged shape, and the bottom of each fork is fixedly connected to a group of clamping components 4, which are used to clamp and fix the top of the crucible 5. A flange ring is provided at the bottom of the fork of the connecting frame 31, and an adjustment hole group is provided at the horizontal end of the positioning clamp 41 corresponding to the flange ring positioning hole. The circumference of multiple groups of clamping components 4 is evenly distributed, which can ensure the stability and firmness of the crucible 5 clamping, avoid the shaking of the crucible 5, and improve the clamping bearing capacity of the crucible 5. At the same time, the flange ring of the connecting frame 31 is installed with the adjustment hole group at different positions of the horizontal end of the positioning clamp 41 through bolts, so that the clamping position of the positioning clamp 41 and the movable clamp 46 can be adjusted in diameter, thereby completing the clamping and positioning of crucibles 5 with different diameters.

[0038] The top of the guide slide 42 is fixedly connected to the pressure plate 43 by bolts. The height of the guide slide 42 is less than the thickness of the positioning splint 41, and the upper surface of the guide slide 42 is lower than the bottom of the limiting slide. The side where the pressure plate 43 and the limiting slide contact each other is provided with anti-slip grooves. The connection with the guide slide 42 is achieved by penetrating the pressure plate 43 with the bolts. When the bolts are continuously tightened, the pressure plate 43 is continuously squeezed against the limiting slide, and the extrusion positioning of the pressure plate 43 and the guide slide 42 can be achieved. At the same time, the setting of the anti-slip grooves ensures the stability of the positioning of the pressure plate 43, thereby ensuring the stability of the overall fixation of the adjustment plate 44. At the same time, its sliding position adjustment can effectively adjust the position of the adjustment plate 44, and cooperate with the threaded position adjustment of the movable splint 46 to achieve the clamping positioning of the crucible 5 with different wall thicknesses.

[0039] Furthermore, the top end of the adjusting plate 44 slides and abuts against the lower surface of the horizontal end of the positioning clamp 41, and the upper surface of the movable clamp 46 slides and abuts against the lower surface of the horizontal end of the positioning clamp 41, and the movable clamp 46 has an arc-shaped structure on one side close to the vertical end of the positioning clamp 41. By setting the arc-shaped clamping surface of the movable clamp 46, the two ends of its arc-shaped structure can effectively adapt to the outer wall abutment of crucibles 5 of different diameters, thereby improving the stability of its clamping and abutting.

[0040] Furthermore, the movable splint 46 is fixedly connected to two guide shafts 47 on one side of the vertical end away from the positioning splint 41. A guide hole is opened on the adjustment plate 44 corresponding to the guide shaft 47, and the guide shaft 47 is slidably inserted into the inside of the guide hole of the adjustment plate 44. The sliding connection of the guide shaft 47 plays a good guiding and limiting role, ensuring the stability of the forward and backward displacement of the movable splint 46.

[0041] An operating method of an intelligent temperature-controlled precision casting furnace comprises the following steps:

[0042] Step 1: Pre-position the crucible;

[0043] Place the crucible 5 inside the heating furnace 2; vertically place the crucible 5 to be heated into the bottom of the cavity of the heating furnace 2. At this time, the bottom end of the crucible 5 is in contact with the bottom surface of the furnace cavity. At this stage, it is necessary to ensure that the flange ring of the crucible 5 is facing upward to facilitate subsequent clamping operations. The initial contact positioning provides a basis for the precise alignment of the subsequent clamping component 4, avoiding positioning deviation caused by tilting during the clamping process.

[0044] Step 2: The clamping mechanism is lowered and docked;

[0045] The control cylinder 3 drives the connecting frame 31 and the clamping assembly 4 to descend, so that the positioning clamping plate (41) and the movable clamping plate 46 respectively abut against the outer edge of the top of the crucible 5; the start cylinder 3 drives the connecting frame 31 to move downward, driving the three groups of clamping assemblies 4 to descend synchronously until the vertical end of the positioning clamping plate 41 contacts the outer edge of the flange ring of the crucible 5, and the movable clamping plate 46 is on the symmetrical side of the outer edge of the flange ring. The trident-shaped distribution of the connecting frame 31 realizes three-point synchronous drive, ensuring that the clamping force is evenly distributed.

[0046] The symmetrical movement of the three groups of clamping points can prevent the crucible 5 from being deformed due to excessive force on a single point, and at the same time provide a geometric reference for subsequent center positioning.

[0047] Step 3: Thread drive clamping adjustment;

[0048] The rotating threaded rod 45 drives the movable clamping plate 46 to move toward the positioning clamping plate 41, thereby completing the clamping and fixing of the top end of the crucible 5; the rotating threaded rod 45 drives the adjustment plate 44 to slide along the lower surface of the horizontal end of the positioning clamping plate 41, and the rotation of the threaded rod 45, through the limiting effect of the guide shaft 47, causes the movable clamping plate 46 to move toward the outer edge of the flange ring of the crucible 5 until its arc surface is tightly fitted with the flange ring.

[0049] The threaded connection between the threaded rod 45 and the adjustment plate 44 converts rotational motion into linear motion, and cooperates with the sliding guide of the guide shaft 47 to ensure the linear displacement of the movable clamping plate 46. The precise control of the clamping force is achieved through fine-tuning of the thread to adapt to crucibles with different wall thicknesses; the arc-shaped clamping surface increases the contact area to avoid local stress damage to the crucible.

[0050] Step 4: Lock the pressure plate and lift it in mid-air;

[0051] Control the cylinder 3 to lift the connecting frame 31 so that the crucible 5 is suspended in the center of the cavity of the heating furnace 2; slide the guide slider 42 along the limiting slide groove of the positioning clamp 41 to change the horizontal position of the adjustment plate 44 to adapt to crucibles 5 of different diameters. When fixing the pressure plate, tighten the fixing bolts of the pressure plate 43 and use the anti-slip grooves on the bottom of the pressure plate 43 to frictionally lock the guide slider 42 with the limiting slide groove.

[0052] Suspended positioning: Control the cylinder 3 to lift the connecting frame 31 so that the crucible 5 is separated from the bottom surface of the furnace chamber and is located at the geometric center of the furnace chamber;

[0053] The synchronous lifting of the three groups of clamping components 4 makes the gravity of the crucible 5 evenly distributed, and the flange ring plane is automatically leveled by three-point clamping. After the crucible 5 is suspended, it maintains an equal distance from the inner wall of the furnace chamber, realizing the circumferential uniform distribution of the radiation heat flow and eliminating the temperature difference caused by contact heat transfer at the bottom.

[0054] Step 5: Heating control and thermal expansion compensation;

[0055] The heating furnace 2 is activated to uniformly heat the suspended crucible 5 in a circular manner. The surrounding heating element radiates heat to the suspended crucible 5. During the heating process, the curved clamping surface of the movable clamping plate 46 allows the crucible 5 to slightly retreat along the guide shaft 47 as it expands due to heat. At the same time, the anti-slip grooves of the pressure plate 43 provide sliding friction resistance to prevent sudden displacement.

[0056] The sliding fit between the guide shaft 47 and the adjustment plate 44 forms an elastic clamping system to absorb thermal expansion deformation. The three-point contact clamping avoids rigid constraints while ensuring stability, preventing the crucible 5 from cracking due to thermal stress.

[0057] In step three, the horizontal position of the guide slider 42 in the positioning clamping plate 41 is changed by sliding the adjustment plate 44, and the position of the adjustment plate 44 is locked by the pressing plate 43 to adapt to the clamping requirements of crucibles 5 with different diameters.

[0058] In step 4, the three points of the tripod-shaped connecting frame 31 are lifted synchronously to keep the flange ring plane of the crucible 5 in a horizontal state, ensuring that the axis of the crucible 5 coincides with the axis of the furnace chamber of the heating furnace 2 .

[0059] During the heating process in step five, the arc-shaped clamping surface of the movable clamping plate 46 and the positioning clamping plate 41 together form a three-point contact clamping to avoid structural stress concentration caused by the thermal expansion of the crucible 5.

[0060] Working principle: First, place the crucible 5 inside the furnace body of the heating furnace 2, and further control the cylinder 3 to drive the connecting frame 31 and the clamping assembly 4 to descend, so that the positioning clamping plate 41 and the movable clamping plate 46 cooperate with each other to complete the circumferential clamping and positioning of the crucible 5. When the crucible 5 is clamped stably, the clamping assembly 4 is driven upward by the upward pull of the cylinder 3, so that the crucible 5 is placed in the center of the heating furnace 2, so that the crucible 5 can be evenly heated through the suspended center placement of the crucible 5.

[0061] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An intelligent temperature-controlled precision casting furnace, characterized by: The machine comprises a frame (1), the top of the frame (1) is fixedly connected to a heating furnace (2), the top of the heating furnace (2) is fixedly connected to a cylinder (3), and the top end of the cylinder (3) passes through the interior of the heating furnace (2) and is connected to a connecting frame (31); A clamping assembly (4) and a crucible (5), wherein the clamping assembly (4) includes a positioning clamping plate (41), and the positioning clamping plate (41) is fixedly connected to the bottom of the connecting frame (31) by bolts, the interior of the positioning clamping plate (41) is slidably connected to a guide slider (42), and the bottom of the guide slider (42) is fixedly connected to an adjustment plate (44), the center of the adjustment plate (44) is threadedly connected to a threaded rod (45), and the other end of the threaded rod (45) is rotatably connected to a movable clamping plate (46), and the positioning clamping plate (41) and the movable clamping plate (46) cooperate with each other to complete the clamping of the top end of the crucible (5).

2. The intelligent temperature-controlled precision casting furnace according to claim 1, characterized in that: The connecting frame (31) is distributed in a trident shape, and the bottom of each fork is fixedly connected to a group of clamping components (4), and the clamping components (4) are used to clamp and fix the top of the crucible (5). The bottom of the fork of the connecting frame (31) is provided with a flange ring, and the horizontal end of the positioning clamp (41) is provided with an adjustment hole group corresponding to the flange ring positioning hole.

3. The intelligent temperature-controlled precision casting furnace according to claim 2, characterized in that: The cross section of the positioning clamp (41) is in an L-shaped structure. A limiting sliding groove is provided above the horizontal end of the positioning clamp (41), and a pressing plate (43) is provided inside the limiting sliding groove for sliding.

4. The intelligent temperature-controlled precision casting furnace according to claim 3, characterized in that: The top of the guide slider (42) is fixedly connected to a pressure plate (43) by bolts. The height of the guide slider (42) is less than the thickness of the positioning clamping plate (41), and the upper surface of the guide slider (42) is lower than the bottom of the limiting slide groove. The side where the pressure plate (43) and the limiting slide groove contact each other is provided with anti-slip grooves.

5. The intelligent temperature-controlled precision casting furnace according to claim 1, characterized in that: The top end of the regulating plate (44) slides against the lower surface of the horizontal end of the positioning clamp (41), the upper surface of the movable clamp (46) slides against the lower surface of the horizontal end of the positioning clamp (41), and the movable clamp (46) is in an arc-shaped structure on one side close to the vertical end of the positioning clamp (41).

6. The intelligent temperature-controlled precision casting furnace according to claim 5, characterized in that: The movable splint (46) is fixedly connected to two guide shafts (47) on one side of the vertical end away from the positioning splint (41); the adjusting plate (44) is provided with guide holes corresponding to the guide shafts (47), and the guide shafts (47) are slidably inserted into the guide holes of the adjusting plate (44).

7. An operating method of an intelligent temperature-controlled precision casting furnace, applied to the intelligent temperature-controlled precision casting furnace according to claim 6, characterized in that: The following steps are involved: Step 1: placing the crucible (5) inside the heating furnace (2); Step 2: Control the cylinder (3) to drive the connecting frame (31) and the clamping assembly (4) to descend, so that the positioning clamping plate (41) and the movable clamping plate (46) respectively abut against the outer edge of the top end of the crucible (5); Step 3: Rotate the threaded rod (45) to drive the movable clamping plate (46) to move toward the positioning clamping plate (41), thereby completing the clamping and fixing of the top end of the crucible (5); Step 4: Control the cylinder (3) to lift the connecting frame (31) so that the crucible (5) is suspended in the center of the cavity of the heating furnace (2); Step 5: Start the heating furnace (2) to uniformly heat the suspended crucible (5) in a circumferential direction.

8. The method for operating an intelligent temperature-controlled precision casting furnace according to claim 7, characterized in that: In step three, the horizontal position of the guide slider (42) in the positioning clamp (41) is changed by sliding the adjustment plate (44), and the position of the adjustment plate (44) is locked by the pressure plate (43) to adapt to the clamping requirements of crucibles (5) of different diameters.

9. The method for operating an intelligent temperature-controlled precision casting furnace according to claim 7, characterized in that: In step 4, the three points of the tripod-shaped connecting frame (31) are synchronously lifted to keep the flange ring plane of the crucible (5) in a horizontal state, ensuring that the axis of the crucible (5) coincides with the axis of the furnace chamber of the heating furnace (2).

10. The method for operating an intelligent temperature-controlled precision casting furnace according to claim 7, characterized in that: During the heating process in step five, the arc-shaped clamping surface of the movable clamping plate (46) and the positioning clamping plate (41) form a three-point contact clamping, thereby avoiding the structural stress concentration caused by the thermal expansion of the crucible (5).

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