A heat treatment device for metal 3D printing

Abstract

The utility model discloses a kind of heat treatment devices for metal 3D printing, it is related to the technical field of part heat treatment, including heat treatment box, rotation is installed with pivot in the heat treatment box, fixed installation is carried out on the outer surface of pivot with n-shaped frame, the heat treatment box is equipped with square frame, two pairs of sliding blocks are slidably installed on the square frame, a pair of first L-shaped connecting rods are equipped in the heat treatment box, through hole is formed in the first L-shaped connecting rod, rotating rod is rotatably installed in the through hole, second L-shaped connecting rod is fixedly installed on the outer surface of rotating rod, the bottom end of the first L-shaped connecting rod and the second L-shaped connecting rod is respectively hinged with the upper end surface of two pairs of sliding blocks, the detachable clamping structure of first L-shaped connecting rod and second L-shaped connecting rod to n-shaped frame, the quick separation of square frame and metal mesh box and n-shaped frame is realized, the scalding hidden danger caused by manual piece by piece taking is solved, and part transfer time is significantly shortened simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment of parts, specifically a heat treatment device for metal 3D printing. Background Technology

[0002] Heat treatment of metal parts is a process in which metal parts or alloy workpieces are heated to a suitable temperature in a certain medium, held at this temperature for a certain time, and then cooled at different rates in different media. By changing the microstructure of the surface or interior of the metal material, its properties can be controlled.

[0003] The existing utility model patent with publication number CN220224240U includes a heat treatment insulation box. Each U-shaped rod has an annular groove and a sleeve on its outer side. A fixing plate is symmetrically fixed to the outer side of the sleeve. A mesh box is fixedly mounted on the lower surface of the two fixing plates. Multiple receiving grooves are formed on the inner side of the sleeve, and each receiving groove contains a ball bearing that is rollably connected to the annular groove. By placing metal parts inside the mesh box and starting the motor, the connecting shaft connected to its output shaft rotates, controlling the continuous rotation of the mesh box. This ensures uniform heating of the metal parts. Furthermore, the ball bearings and annular grooves between the sleeve and the U-shaped rod prevent friction and reduce noise pollution. This solves the problem in existing heat treatment devices for metal parts where multiple metal parts are typically placed in one place inside the insulation box, leading to uneven heating and reduced insulation efficiency.

[0004] However, when collecting parts from the cage, the cage is fixedly connected to the fixing plate, which in turn is fixedly connected to the sleeve. The sleeve is fitted onto the outer surface of the U-shaped rod, which is fixedly connected to the connecting shaft. This connection method makes it impossible to remove the cage and the parts it carries from the heat treatment insulation box simultaneously. Workers have to manually remove the parts one by one, which is not only time-consuming and labor-intensive, but the high temperature inside the heat treatment insulation box can also easily injure the workers' arms during collection. Utility Model Content

[0005] To solve the above problems, namely the problems mentioned in the background art, this utility model proposes a heat treatment device for metal 3D printing, including a heat treatment box, a rotating shaft rotatably installed inside the heat treatment box, an n-shaped frame fixedly installed on the outer surface of the rotating shaft, a square frame provided inside the heat treatment box, and a metal mesh box for supporting metal parts fixedly installed on the lower end face of the square frame.

[0006] Two pairs of sliders are slidably mounted on the frame. A pair of first L-shaped connecting rods are provided inside the heat treatment box. A through-hole is formed in the first L-shaped connecting rod. A rotating rod is rotatably mounted in the through-hole. A second L-shaped connecting rod is fixedly mounted on the outer surface of the rotating rod. The bottom ends of the pair of first L-shaped connecting rods and the pair of second L-shaped connecting rods are respectively hinged to the upper end faces of the two pairs of sliders.

[0007] The first L-shaped connecting rod and the second L-shaped connecting rod are used to clamp the n-shaped frame.

[0008] Preferably, the upper surface of the frame has two pairs of sliding grooves, and the two pairs of sliders are slidably installed in the two pairs of sliding grooves respectively. A pair of fixing blocks are fixedly installed on the upper surface of the frame, and a compression spring is fixedly installed on one end face of the slider. The end of the compression spring away from the slider is fixedly connected to one end face of the fixing block.

[0009] Preferably, an electric heater is fixedly installed on the inner wall of the heat treatment chamber, a sealing door is hinged to one end of the heat treatment chamber, a three-phase motor for driving the rotating shaft is fixedly installed on one side wall of the heat treatment chamber, and a controller is fixedly installed on the sealing door. The controller is electrically connected to the electric heater and the three-phase motor respectively.

[0010] Preferably, both the groove and the slider are T-shaped.

[0011] Preferably, the cross-section of the n-shaped frame is circular.

[0012] The beneficial technical effects of this utility model are as follows: through the sliding cooperation between the slider and the groove, the elastic reset design of the compression spring, and the detachable clamping structure of the first L-shaped connecting rod and the second L-shaped connecting rod for the n-shaped frame, the square frame and the metal mesh box are quickly separated from the n-shaped frame. This allows workers to use external tools to lift the metal mesh box and the square frame upwards, which will cause the first L-shaped connecting rod and the second L-shaped connecting rod to release the clamped n-shaped frame, allowing the square frame and the metal mesh box to be moved out of the heat treatment box as a whole. This solves the risk of burns that can easily be caused by manually picking up parts one by one, greatly improves the safety of operation, and significantly shortens the time for transferring parts. Attached Figure Description

[0013] Figure 1 A schematic diagram of the front view structure of this utility model is shown.

[0014] Figure 2 A side sectional view of the present invention is shown.

[0015] Figure 3 This utility model is shown Figure 2 A magnified structural diagram of part A.

[0016] Figure 4 The diagram shows a side sectional view of the first L-shaped connecting rod of this utility model.

[0017] Figure 5 A top view of the rectangular frame of this utility model is shown.

[0018] The attached diagram includes the following reference numerals: 1. Heat treatment box; 2. Rotating shaft; 3. N-shaped frame; 4. Square frame; 5. Metal mesh box; 6. Slider; 7. First L-shaped connecting rod; 8. Through port; 9. Rotating rod; 10. Second L-shaped connecting rod; 11. Slide groove; 12. Fixing block; 13. Compression spring; 14. Electric heater; 15. Sealing door; 16. Three-phase motor; 17. Controller. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] This utility model proposes a heat treatment device for metal 3D printing, including a heat treatment box 1, a rotating shaft 2 rotatably installed inside the heat treatment box 1, an n-shaped frame 3 fixedly installed on the outer surface of the rotating shaft 2, a square frame 4 provided inside the heat treatment box 1, and a metal mesh box 5 for supporting metal parts fixedly installed on the lower end face of the square frame 4.

[0021] Two pairs of sliders 6 are slidably installed on the frame 4. A pair of first L-shaped connecting rods 7 are provided inside the heat treatment box 1. A through-hole 8 is formed inside the first L-shaped connecting rod 7. A rotating rod 9 is rotatably installed inside the through-hole 8. A second L-shaped connecting rod 10 is fixedly installed on the outer surface of the rotating rod 9. The bottom ends of the pair of first L-shaped connecting rods 7 and the pair of second L-shaped connecting rods 10 are respectively hinged to the upper end faces of the two pairs of sliders 6.

[0022] The first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 are used to clamp the n-shaped frame 3;

[0023] The heat treatment chamber 1 serves as the main body of the device, forming a heat treatment chamber inside. A rotating shaft 2 is horizontally positioned inside the heat treatment chamber 1, with both ends rotatably connected to the two side walls inside the chamber 1. Several n-shaped frames 3 are fixedly installed in a circular array on the outer surface of the rotating shaft 2, rotating synchronously with it. A metal mesh box 5 is fixedly connected to the lower end face of the square frame 4, used to hold metal 3D printed parts. Under the gravity of the square frame 4, the metal mesh box 5, and the parts inside, the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 can be subjected to pressure. A downward pulling force is applied, causing the vertical sections of the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 to retract inward, forming a clamping grip on the n-shaped frame 3 at their upper ends. When the external force pulls the frame 4 upward, a pair of sliders 6 slide away from each other. At this time, the bottom ends of the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 move outward with the pair of sliders 6, causing the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 to rotate around the rotating rod 9, causing their upper clamping parts to separate from the n-shaped frame 3, thus realizing the overall separation of the metal mesh box 5 from the rotating mechanism.

[0024] Specifically, the upper surface of the frame 4 has two pairs of sliding grooves 11, and two pairs of sliders 6 are slidably installed in the two pairs of sliding grooves 11 respectively. A pair of fixing blocks 12 are fixedly installed on the upper surface of the frame 4. A compression spring 13 is fixedly installed on one end of the slider 6, and the end of the compression spring 13 away from the slider 6 is fixedly connected to one end of the fixing block 12.

[0025] Two pairs of sliding grooves 11 are symmetrically machined on the upper surface of the frame 4. Two pairs of sliders 6 can slide along the length of the sliding grooves 11. When the frame 4 is lifted, the compression spring 13 can apply a force to the sliders 6, causing a pair of sliders 6 to slide away from each other. In the initial state, when the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 clamp the n-shaped frame 3, the rebound force of the compression spring 13 makes the sliders 6 close to the fixed block 12, which drives the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 to close and clamp the n-shaped frame 3. When the external force lifts the frame 4, the sliders 6 slide outward along the sliding grooves 11, the compression spring 13 extends, the bottom ends of the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 move outward, and the rods rotate to release the n-shaped frame 3.

[0026] After removing the parts, the next batch of parts to be processed is placed in the metal mesh box 5. The workers lift the two ends of the square frame 4 with their palms, and at the same time push the two pairs of sliders 6 with their thumbs and index fingers to bring them closer together, so that the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 rotate around the rotating rod 9 to clamp the n-shaped frame 3.

[0027] Specifically, an electric heater 14 is fixedly installed on the inner wall of the heat treatment chamber 1, a sealing door 15 is hinged to one end of the heat treatment chamber 1, a three-phase motor 16 for driving the rotating shaft 2 is fixedly installed on one side wall of the heat treatment chamber 1, and a controller 17 is fixedly installed on the sealing door 15. The controller 17 is electrically connected to the electric heater 14 and the three-phase motor 16 respectively.

[0028] The controller 17 can preset the speed of the three-phase motor 16 and the heating power of the electric heater 14. It can also control the three-phase motor 16 and the electric heater 14 to turn on or off. The output end of the three-phase motor 16 is fixedly connected to one end of the rotating shaft 2, which can drive it to rotate. The electric heater 14 can heat the space inside the heat treatment chamber 1 and perform heat treatment on the parts inside the metal mesh box 5. The sealing door 15 can seal the heat treatment chamber 1 to prevent heat loss.

[0029] Specifically, both the slide groove 11 and the slider 6 are T-shaped;

[0030] The narrow slit opening at the upper end of the slide groove 11 can restrict the slider 6 from coming out, while the wide groove at the lower end can accommodate the sliding of the T-shaped head of the slider 6.

[0031] Specifically, the cross-section of the n-shaped frame 3 is circular;

[0032] The circular cross-section of the n-shaped frame 3 allows the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 to clamp it. When the rotating shaft 2 drives the n-shaped frame 3 to rotate, the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 can still stably maintain the clamping state of the n-shaped frame 3.

[0033] Working principle: Open the sealed door 15, place the metal parts to be processed into the metal mesh box 5, lift both sides of the square frame 4 with both palms, and simultaneously push the two pairs of sliders 6 closer together with the thumb and forefinger. The sliders 6 move along the slide groove 11, the compression spring 13 is compressed, the bottom ends of the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 retract with the sliders 6, the rod body rotates around the rotating rod 9, and the upper clamping part hugs the n-shaped frame 3. Close the sealed door 15, start the electric heater 14 through the controller 17 to uniformly heat the inside of the heat treatment box 1, and simultaneously start the three-phase motor 16 to drive the rotating shaft 2 to rotate, so that the rotating shaft 2 drives the n-shaped frame 3 to rotate. The frame 3 pulls the square frame 4 and the metal mesh box 5 to rotate synchronously through the clamping mechanism, which facilitates the electric heater 14 to heat treat the parts inside. After the treatment is completed, the motor 16 and the electric heater 14 are turned off, the sealing door 15 is opened, and the metal mesh box 5 is pushed upward with an external tool to trigger the separation mechanism. The compression spring 13 drives the slider 6 to slide outward along the slide groove 11, so that a pair of sliders 6 move away from each other. The bottom ends of the first L-shaped connecting rod 7 and the second L-shaped connecting rod 10 move outward, the rod body rotates, and the clamping end separates from the frame 3, so that the square frame 4 and the metal mesh box 5 and the parts inside are moved out of the heat treatment box 1 as a whole, which brings convenience to people.

[0034] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0035] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0038] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A heat treatment apparatus for metal 3D printing, characterized in that, It includes a heat treatment box (1), a rotating shaft (2) is rotatably installed inside the heat treatment box (1), an n-shaped frame (3) is fixedly installed on the outer surface of the rotating shaft (2), a square frame (4) is provided inside the heat treatment box (1), and a metal mesh box (5) for carrying metal parts is fixedly installed on the lower end face of the square frame (4). Two pairs of sliders (6) are slidably installed on the frame (4). A pair of first L-shaped connecting rods (7) are provided inside the heat treatment box (1). An opening (8) is formed inside the first L-shaped connecting rod (7). A rotating rod (9) is rotatably installed inside the opening (8). A second L-shaped connecting rod (10) is fixedly installed on the outer surface of the rotating rod (9). The bottom ends of the pair of first L-shaped connecting rods (7) and the pair of second L-shaped connecting rods (10) are respectively hinged to the upper end faces of the two pairs of sliders (6). The first L-shaped connecting rod (7) and the second L-shaped connecting rod (10) are used to clamp the n-shaped frame (3).

2. The heat treatment apparatus for metal 3D printing according to claim 1, characterized in that, The upper surface of the frame (4) has two pairs of sliding grooves (11), and the two pairs of sliders (6) are slidably installed in the two pairs of sliding grooves (11). A pair of fixing blocks (12) are fixedly installed on the upper surface of the frame (4). A compression spring (13) is fixedly installed on one end face of the slider (6). The end of the compression spring (13) away from the slider (6) is fixedly connected to one end face of the fixing block (12).

3. The heat treatment apparatus for metal 3D printing according to claim 1, characterized in that, An electric heater (14) is fixedly installed on the inner wall of the heat treatment box (1). A sealing door (15) is hinged to one end of the heat treatment box (1). A three-phase motor (16) for driving the rotating shaft (2) to rotate is fixedly installed on one side wall of the heat treatment box (1). A controller (17) is fixedly installed on the sealing door (15). The controller (17) is electrically connected to the electric heater (14) and the three-phase motor (16) respectively.

4. The heat treatment apparatus for metal 3D printing according to claim 2, characterized in that, Both the groove (11) and the slider (6) are T-shaped.

5. The heat treatment apparatus for metal 3D printing according to claim 1, characterized in that, The cross-section of the n-shaped frame (3) is circular.

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