Alloy steel heat treatment device

Abstract

The invention belongs to the technical field of heat treatment, and particularly relates to an alloy steel heat treatment device which comprises a heat treatment furnace, a fixing frame is fixedly connected to the lower end of the heat treatment furnace, a conveying chain plate is installed in an inner cavity of the heat treatment furnace, first supporting frames are installed at the two ends of the conveying chain plate, and two T-shaped clamping blocks are symmetrically and fixedly connected to the outer portion of the conveying chain plate. Every two T-shaped clamping blocks form one set, multiple sets of T-shaped clamping blocks are arranged outside the conveying chain plate, discharging bracket assemblies are connected to the outer portions of the T-shaped clamping blocks in a clamped mode, each discharging bracket assembly comprises a U-shaped clamping sleeve connected to the outer portion of the corresponding T-shaped clamping block in a clamped mode, a supporting plate is fixedly connected to the upper end of each U-shaped clamping sleeve, and a containing groove is formed in the upper end face of each supporting plate. An inner cavity of the placing groove is used for placing an alloy nut and is rotationally connected with a transmission shaft; the problem that due to the fact that the supporting plate is inserted into the sleeve, when the driving wheel rubs against the conveying belt support, the supporting plate is stressed to move upwards, and the driving wheel is difficult to rub against the conveying belt support and rotates stably is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of heat treatment, in particular to an alloy steel heat treatment device. Background Art

[0002] Alloy steel is an iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements to ordinary carbon steel. Depending on the added elements and the appropriate processing technology, special properties such as high strength, high toughness, corrosion resistance, low temperature resistance and high temperature resistance can be obtained. Therefore, alloy steel is used to process different parts. For example, the nuts and other workpieces used on ships are all made of alloy steel. During the processing of alloy steel nuts, a continuous heat treatment furnace is generally used. The nuts and other workpieces are placed on the conveyor chain plate of the continuous heat treatment furnace, and the nuts are transported to the heating furnace by the conveyor chain plate. The nuts are heated by the gas assembly in the heating furnace, and the heated nuts are quenched by cold oil or cold water, thereby completing the heat treatment process of nuts and other workpieces.

[0003] A patent application with publication number CN116676468B discloses a continuous heat treatment device for alloy steel fasteners. The patent transfers the pallet through a rotating column, a connecting plate and a grabbing assembly to complete a working cycle, which not only prevents the pallet from being fixed on the surface of the conveyor belt and being rolled into the bottom of the conveyor belt, causing damage to the conveyor belt, but also allows the heat treatment of workpieces such as nuts to continue after the pallet is transferred to another conveyor belt, thereby improving work efficiency. In addition, the gear rotates by rolling on the rack, and the rotation of the gear drives the sleeve rod and the pallet to deflect, so that the nuts on the surface of the pallet slip off, thereby reducing the risk of workers being scalded during manual unloading.

[0004] The above-mentioned prior art still has some problems in actual use. The pallet is inserted into the sleeve on the conveyor belt to limit the position, and then the pallet is conveyed by the conveyor belt to drive the nut into the heating furnace for heating. At the same time, the friction force generated by the driving wheel and the conveyor belt bracket is used to drive the nut to rotate in the pallet, so that the gas heating component heats the nut more evenly. However, since the pallet is inserted in the sleeve, when the driving wheel rubs against the conveyor belt bracket, the pallet is forced to move upward, which makes it difficult for the driving wheel to generate friction with the conveyor belt bracket and thus causes the problem of stable rotation.

[0005] To this end, the present invention provides an alloy steel heat treatment device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the alloy steel heat treatment device described in the present invention comprises a heat treatment furnace, a fixing frame is fixedly connected to the lower end of the heat treatment furnace, a conveying chain plate is installed in the inner cavity of the heat treatment furnace, and first support frames are installed at both ends of the conveying chain plate, two T-shaped blocks are symmetrically fixedly connected to the outside of the conveying chain plate, and two T-shaped blocks form a group, and multiple groups are arranged outside the conveying chain plate, and a material discharge bracket assembly is clamped on the outside of the T-shaped blocks; The discharge bracket assembly includes a U-shaped sleeve clamped on the outside of the T-shaped block, the upper end of the U-shaped sleeve is fixedly connected to a support plate, the upper end surface of the support plate is provided with a placement groove, the inner cavity of the placement groove is fixedly connected to a positioning plate, and the upper end surface of the positioning plate is evenly provided with a plurality of connecting grooves, the upper end surface of the positioning plate is provided with elastic parts on both sides of the connecting groove, and the elastic parts are used to extrude and limit the alloy nuts.

[0008] Preferably, a transmission shaft is rotatably connected to the middle part of the inner cavity of the support plate, and a plurality of driven shafts are arranged on both sides of the transmission shaft in the inner cavity of the support plate. A plurality of rotating blocks are arranged outside the driven shaft and the transmission shaft, and a protrusion is arranged outside the rotating block. The rotating blocks are rotatably connected to the inner cavity of the connecting groove, and the connecting groove passes through the connecting placement groove.

[0009] Preferably, both ends of the transmission shaft pass through the outside of the support plate and are fixedly connected to a main sprocket, and the main sprocket is externally connected to a chain for transmission, and both ends of the driven shaft pass through the support plate and are fixedly connected to a driven sprocket, and the driven sprockets are of different sizes and are used for meshing chain transmission.

[0010] Preferably, both ends of the transmission shaft pass through the support plate and are fixedly connected to a driving wheel, a plurality of tooth blocks are arranged on the arc surface of the driving wheel, and a plurality of storage grooves are opened on the end of the arc surface of the driving wheel away from the tooth block, a spring is fixedly connected to the bottom of the inner cavity of the storage groove, and a telescopic tooth block is fixedly connected to one end of the spring.

[0011] Preferably, one end of the first support frame is fixedly connected to the second support frame, the upper end of the second support frame is fixedly connected to a conveying frame, and one end of the conveying frame is provided with an automatic unloading mechanism.

[0012] Preferably, the automatic unloading mechanism includes a rotating groove opened inside one end of the conveying frame, the inner cavity of the rotating groove is rotatably connected to a connecting shaft, and the connecting shaft is located outside the inner cavity of the rotating groove and is fixedly connected to a fixed disk, both end surfaces of the fixed disk are fixedly connected to torsion springs, and one end of the torsion spring is fixedly connected to the inner wall of the rotating groove.

[0013] Preferably, both ends of the connecting shaft pass through the rotating groove and are fixedly connected with a flip block, and both ends of the conveying frame are fixedly connected with abutment blocks, and the abutment blocks are used to abut the flip block.

[0014] Preferably, a T-shaped slide groove is provided at the upper end of the conveying frame, the inner cavity of the T-shaped slide groove is rotatably connected to a screw rod, the outer thread of the screw rod is connected to a slider, a torsion spring mechanism is provided inside one side of the slider, the inner cavity of the slider is rotatably connected to a stop block, and the stop block is fixedly connected to the torsion spring mechanism.

[0015] Preferably, a material return mechanism is fixedly connected to one end of the first support frame, and the material return mechanism includes a third support frame fixedly connected to one end of the first support frame, and conveyor chains are rotatably connected to both sides of the inner cavity of the third support frame, and a plurality of material return blocks are fixedly connected to the outside of the conveyor chain.

[0016] Preferably, racks are fixedly connected to both sides of the upper end of the conveying chain plate, and the racks are meshingly connected with the driving wheel.

[0017] The beneficial effects of the present invention are as follows: 1. An alloy steel heat treatment device described in the present invention, by evenly installing a plurality of alloy nuts in a limit position in a discharge bracket assembly, and then placing the discharge bracket assembly on a conveying frame, and starting the conveying chain plate to drive the T-shaped clamping block to rotate, and with the rotation of the conveying chain plate, the T-shaped clamping block will slide into the inner cavity of the conveying frame, and the T-shaped clamping block will slide into the discharge bracket assembly to drive the alloy nut to slide out from the conveying frame and move to the inner cavity of a heat treatment furnace, and at the same time, the alloy nut on the discharge bracket assembly is heated by a gas heating assembly in the inner cavity of the heat treatment furnace, and after the conveying chain plate drives the support plate to enter the inner cavity of the heat treatment furnace, the driving wheel will mesh with the rack, and at the same time, drive the transmission shaft to rotate, and then drive the alloy nut in the inner cavity of the placement groove to rotate, so that the alloy nut can be evenly heated, thereby solving the problem of the existing alloy steel heating treatment device that the support plate is inserted in the sleeve, and when the driving wheel rubs with the conveyor belt bracket, the support plate is forced to move upward, resulting in the driving wheel being difficult to generate friction with the conveyor belt bracket and stable rotation.

[0018] 2. The alloy steel heat treatment device described in the present invention, after the conveyor chain plate drives the heated alloy nut to slide out of the heat treatment furnace, as the conveyor chain plate drives the pallet to move between the material return mechanisms, the pallet is collected by the material return mechanism, and then quenched by cold oil or cold water, thereby solving the problem of the existing alloy steel heat treatment device that the pallet is inserted into the sleeve on the conveyor belt for limiting, and then the pallet is conveyed by the conveyor belt to drive the nut into the heating furnace for heating, and the heated nut is lifted from the conveyor belt by the grabbing mechanism and collected. However, since the grabbing mechanism does not have a limiting component, the pallet will fall off when it is grabbed and lifted, and the conveyor belt needs to be stopped when the pallet is grabbed, which greatly reduces the heating efficiency of the nut.

[0019] 3. The alloy steel heat treatment device described in the present invention, when the conveying chain plate drives the support plate to move into the heat treatment furnace for heating, the driving wheel is driven to rotate by the meshing of the tooth block and the rack, and during the rotation of the driving wheel, the alloy nut in the inner cavity of the support plate will be driven to rotate, so that the alloy nut entering the heat treatment furnace can be evenly heated, and when the tooth block is broken due to long-term heat, the spring in the inner cavity of the storage groove will bounce up the telescopic tooth block and make the telescopic tooth block mesh with the rack, thereby ensuring the rotation of the driving wheel, and when the telescopic tooth block is broken, the elastic force of the spring can be used to push the telescopic tooth block to always mesh with the rack, thereby ensuring the stability of the rotation of the driving wheel, thereby solving the problem of the existing alloy steel heat treatment when the tooth block cooperates with the rack to drive the driving wheel to rotate, because the tooth block is worn due to long-term heat, the tooth block cannot be guaranteed to mesh with the rack, resulting in the inability to continuously rotate the driving wheel, resulting in the inability to drive the alloy nut to rotate and evenly heat it. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the main overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of a heat treatment furnace in half section according to the present invention; Figure 3 It is a rear-view stereoscopic structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the overall structure of the support plate of the present invention; Figure 5 It is a schematic diagram of the internal installation structure of the support plate of the present invention; Figure 6 It is a schematic diagram of the overall structure of the driving wheel of the present invention; Figure 7 It is a schematic diagram of the internal structure of a driving wheel in partial section according to the present invention; Figure 8 It is a schematic diagram of the overall structure of the conveyor frame of the present invention; Fig. 9 This is a half-section schematic diagram of the internal structure of the flip block of the present invention; Fig.10 It is a schematic diagram of the internal structure of a slider in partial section of the present invention; Fig.11 This is a schematic diagram of the structure of the support plate of the present invention when viewed from above; In the figure: 1, heat treatment furnace; 2, conveyor chain plate; 3, first support frame; 4, second support frame; 5, conveyor frame; 6, automatic unloading mechanism; 61, flip block; 62, rotating groove; 63, torsion spring; 64, fixed plate; 65, connecting shaft; 66, stop block; 7, unloading bracket assembly; 71, support plate; 72, placement groove; 73, positioning plate; 74, connecting groove; 75, elastic member; 76, U-shaped card sleeve; 8, T-shaped card block; 9, fixed Frame; 10, material return mechanism; 11, conveyor chain; 12, material return block; 13, rack; 14, transmission shaft; 15, driving wheel; 16, driven shaft; 17, rotating block; 18, main sprocket; 19, chain; 20, driven sprocket; 21, tooth block; 22, telescopic tooth block; 23, storage groove; 24, spring; 25, T-type slide; 26, slider; 27, screw rod; 28, block; 29, torsion spring mechanism; 30, third support frame. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention. Embodiment 1

[0023] See also Figure 1-11 , the present invention provides a technical solution: An alloy steel heat treatment device comprises a heat treatment furnace 1, a fixing frame 9 is fixedly connected to the lower end of the heat treatment furnace 1, a conveying chain plate 2 is installed in the inner cavity of the heat treatment furnace 1, first support frames 3 are installed at both ends of the conveying chain plate 2, two T-shaped blocks 8 are symmetrically fixedly connected to the outside of the conveying chain plate 2, and the two T-shaped blocks 8 form a group, and multiple groups are arranged outside the conveying chain plate 2, and a material discharge bracket assembly 7 is clamped on the outside of the T-shaped blocks 8; The unloading bracket assembly 7 includes a U-shaped ferrule 76 clamped on the outside of the T-shaped clamp block 8, the upper end of the U-shaped ferrule 76 is fixedly connected to a support plate 71, the upper end surface of the support plate 71 is provided with a placement groove 72, and the inner cavity of the placement groove 72 is used to place the alloy nut, and the inner cavity of the placement groove 72 is rotatably connected to the transmission shaft 14; Racks 13 are fixedly connected to both sides of the upper end of the conveying chain plate 2 , and driving wheels 15 are fixedly connected to both ends of the transmission shaft 14 passing through the supporting plate 71 , and the racks 13 are meshedly connected with the driving wheels 15 .

[0024] Specifically, in the prior art, the support plate is inserted into the sleeve on the conveyor belt for limiting, and then the nut is driven into the heating furnace for heating by the conveyor belt. At the same time, the nut is rotated in the support plate by the friction force generated by the driving wheel and the conveyor belt bracket, so that the gas heating component heats the nut more evenly. However, since the support plate is inserted into the sleeve, when the driving wheel rubs against the conveyor belt bracket, the support plate is forced to move upward, which makes it difficult for the driving wheel to generate friction with the conveyor belt bracket and thus causes the problem of stable rotation. The present invention is carried out by evenly installing a plurality of alloy nuts in the inner cavity of the placement groove 72, limiting the position of the nuts, and then placing the support plate 71 with the alloy nuts installed on the conveying frame 5, while inserting the U-shaped clamping sleeve 76 at the lower end of the support plate 71 into the inner cavity of the conveying frame 5, and limiting the position of the U-shaped clamping sleeve 76 by the conveying frame 5, and at the same time starting the conveying chain plate 2 to drive the T-shaped clamping block 8 to move, and with the rotation of the conveying chain plate 2, the T-shaped clamping block 8 will slide into the inner cavity of the U-shaped clamping sleeve 76, and then the T-shaped clamping block 8 and the U-shaped clamping sleeve 76 will be engaged and matched, and at the same time the U-shaped clamping sleeve 76 drives the support plate 71 to slide out from the conveying frame 5 and move into the inner cavity of the heat treatment furnace 1, after the support plate 71 moves into the heat treatment furnace 1, the alloy nuts on the support plate 71 are heated by the gas heating component in the inner cavity of the heat treatment furnace 1; After the conveying chain plate 2 drives the support plate 71 into the inner cavity of the heat treatment furnace 1, the driving wheel 15 will engage with the rack 13, and then in the process of the conveying chain plate 2 driving the support plate 71 to move, the driving wheel 15 cooperates with the rack 13 to rotate, and at the same time drives the transmission shaft 14 to rotate, and then drives the alloy nut in the inner cavity of the placement groove 72 to rotate, so that the alloy nut can be heated evenly, thereby solving the problem of the existing alloy steel heating treatment device that the support plate is inserted in the sleeve, and when the driving wheel rubs against the conveyor belt bracket, the support plate is forced to move upward, resulting in the driving wheel being difficult to generate friction with the conveyor belt bracket and stable rotation.

[0025] like Figure 4 and Figure 5 As shown, the inner cavity of the support plate 71 is provided with multiple driven shafts 16 on both sides of the transmission shaft 14, and multiple rotating blocks 17 are provided outside the driven shaft 16 and the transmission shaft 14, and the rotating blocks 17 are provided with protrusions outside. The rotating blocks 17 are all rotatably connected to the inner cavity of the connecting groove 74, and the connecting groove 74 passes through the connecting placement groove 72.

[0026] Specifically, when the conveying chain plate 2 drives the support plate 71 to move into the heat treatment furnace 1 for heating, the driving wheel 15 cooperates with the rack 13 to rotate, and the driving wheel 15 drives the transmission shaft 14 to rotate. At the same time, during the rotation of the transmission shaft 14, it will drive multiple driven shafts 16 to rotate, and then drive the rotating block 17 to rotate. During the rotation of the rotating block 17, it will drive the alloy nuts in the inner cavity of the connecting groove 74 to rotate, so that the alloy nuts can be evenly heated in the inner cavity of the heat treatment furnace 1, thereby improving the uniform heating efficiency of the alloy nuts.

[0027] like Figure 4 and Figure 5 As shown, both ends of the transmission shaft 14 pass through the support plate 71 and are fixedly connected to the outside of the main sprocket 18, and the main sprocket 18 is externally connected to the chain 19 for transmission. Both ends of the driven shaft 16 pass through the support plate 71 and are fixedly connected to the driven sprocket 20, and the driven sprockets 20 are of different sizes and are used for engaging the chain 19 for transmission.

[0028] Specifically, when the alloy nuts are conveyed to the heat treatment furnace 1 for heating, the transmission shaft 14 is driven to rotate, and the transmission shaft 14 drives the main sprocket 18 to rotate, and then the transmission chain 19 rotates. During the rotation of the chain 19, the driven sprocket 20 is driven to rotate, and then the driven shaft 16 is driven to rotate, so that the driven shaft 16 and the transmission shaft 14 can drive the alloy nuts in the inner cavity of the support plate 71 to rotate, so that the alloy nuts can be evenly heated, and at the same time, the heating efficiency of the alloy nuts is improved.

[0029] like Figure 4 , Figure 6 and Figure 7 As shown, the arc surface of the driving wheel 15 is provided with a plurality of tooth blocks 21, and a plurality of receiving grooves 23 are opened at one end of the arc surface of the driving wheel 15 away from the tooth blocks 21, a spring 24 is fixedly connected to the bottom of the inner cavity of the receiving groove 23, and a telescopic tooth block 22 is fixedly connected to one end of the spring 24.

[0030] Specifically, when the conveying chain plate 2 drives the support plate 71 to move into the heat treatment furnace 1 for heating, the tooth block 21 is engaged with the rack 13 to drive the driving wheel 15 to rotate, and during the rotation of the driving wheel 15, the alloy nut in the inner cavity of the support plate 71 will be driven to rotate, so that the alloy nut entering the heat treatment furnace 1 can be evenly heated, and when the tooth block 21 is heated for a long time and breaks, the spring 24 in the inner cavity of the storage groove 23 will bounce up the telescopic tooth block 22 and make the telescopic tooth block 22 engage with the rack 13, so as to ensure the rotation of the driving wheel 15, and when the telescopic tooth block 22 breaks, by utilizing the elastic force of the spring 24, the telescopic tooth block 22 can be pushed to always engage with the rack 13, so as to ensure the stability of the rotation of the driving wheel 15, thereby solving the problem that when the existing alloy steel heat treatment uses the tooth block to cooperate with the rack to drive the driving wheel to rotate, the tooth block cannot be guaranteed to be engaged with the rack due to the wear of the tooth block due to long-term heating, resulting in the inability to ensure the continuous rotation of the driving wheel, resulting in the inability to drive the alloy nut to rotate and evenly heat it. Embodiment 2

[0031] like Figures 1 to 10 As shown in Comparative Example 1, another embodiment of the present invention is: like Figure 1 and Figure 3 As shown, one end of the first support frame 3 is fixedly connected to the second support frame 4, the upper end of the second support frame 4 is fixedly connected to the conveying frame 5, and one end of the conveying frame 5 is provided with an automatic unloading mechanism 6.

[0032] Specifically, after placing multiple pallets 71 with alloy nuts installed on them on the conveying rack 5, and making the pallet 71 close to the heat treatment furnace 1 abut against the automatic unloading mechanism 6, the conveying chain plate 2 is used to drive the pallet 71 to slide out from the conveying rack 5, and making the pallet 71 push the automatic unloading mechanism 6 to flip, thereby realizing the unloading of the pallet 71, avoiding the heat dissipated from the inner cavity of the heat treatment furnace 1 causing burns to the operator when the operator places the pallet 71 with alloy nuts installed on the conveying chain plate 2 again, and at the same time improving the safety of the alloy steel heat treatment device, and solving the problem that the operator needs to insert the pallet into the sleeve for installation when the nut is heat treated in the existing alloy steel heat treatment device, resulting in the need to stop the conveyor belt when the pallet is installed to heat treat the nut, resulting in a decrease in the overall heat treatment efficiency.

[0033] like Figure 1 , Figure 8 and Fig. 9 As shown, the automatic unloading mechanism 6 includes a rotating groove 62 opened inside one end of the conveying frame 5, the inner cavity of the rotating groove 62 is rotatably connected to a connecting shaft 65, and the connecting shaft 65 is located outside the inner cavity of the rotating groove 62 and is fixedly connected to a fixed plate 64, both end surfaces of the fixed plate 64 are fixedly connected to torsion springs 63, and one end of the torsion spring 63 is fixedly connected to the inner wall of the rotating groove 62.

[0034] Specifically, when the conveying chain plate 2 takes the pallet 71 out from the conveying frame 5, the pallet 71 drives the connecting shaft 65 to rotate, and the connecting shaft 65 drives the fixed plate 64 to rotate. At the same time, the fixed plate 64 drives the torsion spring 63 to rotate during the rotation. After the pallet 71 is taken out from the conveying frame 5, the torsion spring 63 will rotate and drive the fixed plate 64 to rotate. At the same time, the fixed plate 64 drives the connecting shaft 65 to rotate, and then it is convenient to limit the pallet 71 placed later on the conveying frame 5 again, so that the conveying chain plate 2 can cooperate with the conveying chain plate 2 to achieve the effect of automatic unloading of the pallet 71.

[0035] like Figures 8 to 10 As shown, both ends of the connecting shaft 65 pass through the rotating groove 62 and are fixedly connected to the turning block 61 , and both ends of the conveying frame 5 are fixedly connected to the abutting blocks 66 , and the abutting blocks 66 are used to abut against the turning block 61 .

[0036] Specifically, when the conveying chain plate 2 takes the support plate 71 out from the conveying frame 5, the support plate 71 is pressed against the flip block 61 for rotation, and the flip block 61 drives the connecting shaft 65 to rotate, and at the same time drives the fixed plate 64 to rotate. During the rotation process, the fixed plate 64 will drive the torsion spring 63 to rotate. After the support plate 71 is taken out from the conveying frame 5, the torsion spring 63 will rotate and drive the fixed plate 64 to rotate. At the same time, the fixed plate 64 drives the connecting shaft 65 to rotate, and then drives the flip block 61 to rotate, and then uses the abutment block 66 to abut the flip block 61, so as to limit the support plate 71 on the conveying frame 5 again, thereby achieving the effect of automatic unloading of the support plate 71 and improving the heating efficiency of the alloy nuts.

[0037] like Figures 8 to 10 As shown, a T-shaped slide groove 25 is provided at the upper end of the conveying frame 5, and a screw rod 27 is rotatably connected to the inner cavity of the T-shaped slide groove 25, and a slider 26 is externally threadedly connected to the screw rod 27. A torsion spring mechanism 29 is provided inside one side of the slider 26, and a stop block 28 is rotatably connected to the inner cavity of the slider 26, and the stop block 28 is fixedly connected to the torsion spring mechanism 29.

[0038] Specifically, after placing the support plate 71 with the alloy nut installed on the conveying rack 5, the screw rod 27 is driven to rotate, and the screw rod 27 threaded transmission slider 26 slides in the inner cavity of the T-shaped slide groove 25 to move closer to one end of the heat treatment furnace 1. At the same time, the slider 26 uses the stop block 28 to push the support plate 71 to move closer to one end of the heat treatment furnace 1. After pushing the support plate 71 to one end of the conveying rack 5, the screw rod 27 threaded transmission slider 26 moves in the opposite direction. After the slider 26 drives the stop block 28 to contact the support plate 71 just placed on the conveying rack 5, the stop block 28 cooperates with the torsion spring The mechanism 29 is flipped into the T-shaped slide groove 25, so as to facilitate the reset of the slider 26. After the slider 26 moves to the side of the support plate 71 just placed on the conveyor frame 5, the torsion spring mechanism 29 rotates the stop block 28 to reset, and then drives the screw rod 27 to rotate again, and then uses the stop block 28 to push the support plate 71 to one end of the heat treatment furnace 1 for transportation, and then cooperates with the conveying chain plate 2 to automatically take out and heat the material, thereby realizing the automatic heating efficiency of the alloy nut, preventing the operator from being burned by the heat dissipated in the inner cavity of the heat treatment furnace 1 when unloading the material.

[0039] like Figures 1 to 3 As shown, a material return mechanism 10 is fixedly connected to one end of the first support frame 3, and the material return mechanism 10 includes a third support frame 30 fixedly connected to one end of the first support frame 3, and a conveyor chain belt 11 is rotatably connected to both sides of the inner cavity of the third support frame 3, and a plurality of material return blocks 12 are fixedly connected to the outside of the conveyor chain belt 11.

[0040] Specifically, after the conveyor chain plate 2 drives the heated alloy nut to slide out of the heat treatment furnace 1, as the conveyor chain plate 2 drives the support plate 71 to move between the material return mechanism 10, since the rotation speed of the conveyor chain belt 11 is twice the rotation speed of the conveyor chain plate 2, after the support plate 71 moves between the conveyor chain belt 11, the conveyor chain belt 11 drives the material return block 12 to rotate, and then the material return block 12 drives the driving wheel 15 to drive the support plate 71 to move, and the support plate 71 drives the U-shaped clamping sleeve 76 to disengage from the T-shaped clamping block 8, so as to collect the heated alloy nut, and then use cold oil or cold water to collect the heated alloy nut. The quenching treatment is carried out, thereby solving the problem that the existing alloy steel heat treatment device inserts the pallet into the sleeve on the conveyor belt for limiting the position, and then conveys the pallet through the conveyor belt to drive the nut into the heating furnace for heating, and the heated nut is lifted from the conveyor belt by a grabbing and lifting mechanism and the nut on the pallet is knocked to make the nut fall off the pallet and be collected. However, since the grabbing and lifting mechanism does not have a limiting component, the grabbing and lifting pallet will fall off, and when the pallet is grabbed and lifted, the conveyor belt needs to be stopped, which greatly reduces the heating efficiency of the nut.

[0041] like Figures 4 to 5As shown, a positioning plate 73 is fixed to the inner cavity of the placement groove 72, and a plurality of connecting grooves 74 are evenly opened on the upper end surface of the positioning plate 73. Elastic members 75 are arranged on both sides of the connecting grooves 74 on the upper end surface of the positioning plate 73, and the elastic members 75 are used to extrude and limit the alloy nuts.

[0042] Specifically, by installing the alloy nut in the inner cavity of the connecting groove 74, and making the alloy nut extrude the elastic member 75 to produce deformation, the elastic member 75 is inserted into the inner cavity of the alloy nut and the nut is limited, and then the support plate 71 with the alloy nut installed is placed on the conveying frame 5, and the U-shaped sleeve 76 at the lower end of the support plate 71 is inserted into the inner cavity of the conveying frame 5, and the conveying frame 5 limits the U-shaped sleeve 76, and at the same time, the conveying chain plate 2 is started to drive the T-shaped block 8 to rotate. As the conveying chain plate 2 rotates, the T-shaped block 8 will slide into the inner cavity of the conveying frame 5, and the T-shaped block 8 will slide into the inner cavity of the U-shaped sleeve 76, and then the T-shaped block 8 will drive the U-shaped sleeve 76 to move into the heat treatment furnace 1, and at the same time, the U-shaped sleeve 76 drives the support plate 71 to slide out from the conveying frame 5 and move to the inner cavity of the heat treatment furnace 1, and at the same time, the gas heating component in the inner cavity of the heat treatment furnace 1 is used to heat the alloy nut on the support plate 71.

[0043] The working principle is to evenly install a plurality of alloy nuts in the inner cavity of the placement groove 72, limit the nuts, and then place the support plate 71 with the alloy nuts installed on the conveying frame 5, and at the same time insert the U-shaped clamping sleeve 76 at the lower end of the support plate 71 into the inner cavity of the conveying frame 5, and limit the U-shaped clamping sleeve 76 by the conveying frame 5, and at the same time start the conveying chain plate 2 to drive the T-shaped clamping block 8 to rotate, and with the rotation of the conveying chain plate 2, the T-shaped clamping block 8 will slide into the inner cavity of the conveying frame 5, and the T-shaped clamping block 8 will slide into the inner cavity of the U-shaped clamping sleeve 76, and then the T-shaped clamping block 8 will drive the U-shaped clamping sleeve 76 to move into the heat treatment furnace 1, and at the same time the U-shaped clamping sleeve 76 drives the support plate 71 to slide out from the conveying frame 5 and move to the inner cavity of the heat treatment furnace 1, and at the same time use the gas heating component in the inner cavity of the heat treatment furnace 1 to heat the alloy nuts on the support plate 71; When the conveying chain plate 2 drives the support plate 71 to move into the heat treatment furnace 1 for heating, the driving wheel 15 cooperates with the rack 13 to rotate, and the driving wheel 15 drives the transmission shaft 14 to rotate. At the same time, during the rotation of the transmission shaft 14, it will drive multiple driven shafts 16 to rotate, and then drive the rotating block 17 to rotate. During the rotation of the rotating block 17, it will drive the alloy nut in the inner cavity of the connecting groove 74 to rotate, so that the alloy nut can be evenly heated in the inner cavity of the heat treatment furnace 1. After the conveyor chain plate 2 drives the heated alloy nuts to slide out of the heat treatment furnace 1, as the conveyor chain plate 2 drives the pallet 71 to move between the material return mechanism 10, since the rotation speed of the conveyor chain belt 11 is twice the rotation speed of the conveyor chain belt 2, after the pallet 71 moves between the conveyor chain belt 11, the conveyor chain belt 11 drives the material return block 12 to rotate, and then the material return block 12 pushes the driving wheel 15 to drive the pallet 71 to move, and the pallet 71 drives the U-shaped clamping sleeve 76 to disengage from the T-shaped clamping block 8, so as to collect the heated alloy nuts, and then use cold oil or cold water to quench them.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An alloy steel heat treatment device, characterized in that: It comprises a heat treatment furnace (1), the lower end of the heat treatment furnace (1) is fixedly connected to a fixing frame (9), the inner cavity of the heat treatment furnace (1) is installed with a conveying chain plate (2), both ends of the conveying chain plate (2) are installed with a first support frame (3), the outside of the conveying chain plate (2) is symmetrically fixed with two T-shaped blocks (8), and the two T-shaped blocks (8) form a group, and multiple groups are arranged outside the conveying chain plate (2), and the outside of the T-shaped blocks (8) is clamped with a material discharge bracket assembly (7); The material discharge bracket assembly (7) comprises a U-shaped clamping sleeve (76) clamped on the outside of the T-shaped clamping block (8), the upper end of the U-shaped clamping sleeve (76) is fixedly connected to a support plate (71), the upper end surface of the support plate (71) is provided with a placement groove (72), and the inner cavity of the placement groove (72) is used to place the alloy nut, and the inner cavity of the placement groove (72) is rotatably connected to a transmission shaft (14); Racks (13) are fixedly connected to both sides of the upper end of the conveying chain plate (2), and both ends of the transmission shaft (14) pass through the support plate (71) and are fixedly connected to driving wheels (15), and the racks (13) are meshingly connected to the driving wheels (15).

2. The alloy steel heat treatment device according to claim 1, characterized in that: The inner cavity of the support plate (71) is provided with a plurality of driven shafts (16) on both sides of the transmission shaft (14), and the driven shaft (16) and the transmission shaft (14) are provided with a plurality of rotating blocks (17) on the outside, and the rotating blocks (17) are provided with protrusions on the outside, and the rotating blocks (17) are all rotatably connected to the inner cavity of the connecting groove (74), and the connecting groove (74) passes through the connecting placement groove (72).

3. The alloy steel heat treatment device according to claim 2, characterized in that: Both ends of the transmission shaft (14) pass through the support plate (71) and are fixedly connected to the outside of the main sprocket (18), and the outside of the main sprocket (18) is connected to the chain (19) for transmission. Both ends of the driven shaft (16) pass through the support plate (71) and are fixedly connected to the driven sprocket (20), and the driven sprockets (20) are of different sizes and are used for meshing with the chain (19) for transmission.

4. The alloy steel heat treatment device according to claim 2, characterized in that: The arc surface of the driving wheel (15) is provided with a plurality of tooth blocks (21), and one end of the arc surface of the driving wheel (15) away from the tooth blocks (21) is provided with a plurality of receiving grooves (23), a spring (24) is fixedly connected to the bottom of the inner cavity of the receiving groove (23), and one end of the spring (24) is fixedly connected to a telescopic tooth block (22).

5. The alloy steel heat treatment device according to claim 1, characterized in that: One end of the first support frame (3) is fixedly connected to a second support frame (4), an upper end of the second support frame (4) is fixedly connected to a conveying frame (5), and one end of the conveying frame (5) is provided with an automatic unloading mechanism (6).

6. The alloy steel heat treatment device according to claim 5, characterized in that: The automatic unloading mechanism (6) comprises a rotating groove (62) provided inside one end of the conveying frame (5); a connecting shaft (65) is rotatably connected to the inner cavity of the rotating groove (62); and the connecting shaft (65) is located outside the inner cavity of the rotating groove (62) and is fixedly connected to a fixed plate (64); both end surfaces of the fixed plate (64) are fixedly connected to torsion springs (63); and one end of the torsion spring (63) is fixedly connected to the inner wall of the rotating groove (62).

7. The alloy steel heat treatment device according to claim 6, characterized in that: Both ends of the connecting shaft (65) pass through the rotating groove (62) and are fixedly connected to a turning block (61); both ends of the conveying frame (5) are fixedly connected to abutment blocks (66), and the abutment blocks (66) are used to abut against the turning block (61).

8. The alloy steel heat treatment device according to claim 5, characterized in that: A T-shaped slide groove (25) is provided at the upper end of the conveying frame (5); a screw rod (27) is rotatably connected to the inner cavity of the T-shaped slide groove (25); a slider (26) is externally threadedly connected to the screw rod (27); a torsion spring mechanism (29) is provided inside one side of the slider (26); a stop block (28) is rotatably connected to the inner cavity of the slider (26); and the stop block (28) is fixedly connected to the torsion spring mechanism (29).

9. The alloy steel heat treatment device according to claim 1, characterized in that: A material return mechanism (10) is fixedly connected to one end of the first support frame (3), and the material return mechanism (10) comprises a third support frame (30) fixedly connected to one end of the first support frame (3), and a conveyor chain (11) is rotatably connected to both sides of the inner cavity of the third support frame (30), and a plurality of material return blocks (12) are fixedly connected to the outside of the conveyor chain (11).

10. The alloy steel heat treatment device according to claim 1, characterized in that: A positioning plate (73) is fixedly connected to the inner cavity of the placement groove (72), and a plurality of communication grooves (74) are evenly formed on the upper end surface of the positioning plate (73). Elastic members (75) are provided on both sides of the upper end surface of the positioning plate (73) on the communication grooves (74), and the elastic members (75) are used to extrude the limiting alloy nut.

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