Thermal cycle vacuum annealing furnace

Abstract

The utility model discloses a thermal cycle vacuum annealing furnace, which relates to the technical field of annealing furnaces and comprises a support frame and a gas injection component, a sealing barrel is fixed in the supporting frame, a temperature sensor and an air pressure sensor are installed at the lower end of the interior of the sealing barrel, a net barrel is fixed in the sealing barrel, a heating assembly is installed in the sealing barrel, a material pushing assembly is installed in the net barrel, and a rotating assembly is installed on the rear side of the supporting frame; the gas injection assembly comprises a gas injection pipe, a connecting pipe, a fixing frame, a connecting flange plate, a one-way valve and an electric brush sliding ring, a rotating hole is formed in the rear side of the supporting frame, the gas injection pipe is rotationally connected into the rotating hole, the connecting pipe is rotationally connected into the gas injection pipe, and the fixing frame is fixed to the rear side of the supporting frame. And a connecting hole is formed in the rear side of the fixing frame, so that an internal workpiece can be uniformly heated, and meanwhile, the annealed workpiece can be conveniently taken out.

Description

TECHNICAL FIELD

[0001] The utility model relates to annealing furnace technical field, concretely is a kind of thermal cycle vacuum annealing furnace. BACKGROUND

[0002] Vacuum annealing furnace is mainly applicable to stainless steel deep-drawing parts such as water heating equipment, water expansion parts, pins, medical devices, stainless steel nails, stainless steel dart filaments, press-in parts, stainless steel bearings, watch cases, watch bands, cutters, micro shafts, self-tapping and self-drilling, tableware and other stainless steel products are continuously bright annealed, solid solution, demagnetized and stainless steel quenched under the control of protective atmosphere, the surface of the treated product is smooth, non-oxidized and non-decarburized, with the advantages of high production efficiency, low energy consumption, less pollution, easy operation and low labor intensity, and can also be used for brazing and sintering of metal materials;

[0003] The current vacuum annealing furnace is not uniform in heating when annealing workpieces, affecting the annealing effect, and it is not convenient to put or take out the workpieces from the furnace, the high temperature in the furnace can easily scald the hands of the user, affecting the safety of the user, therefore, we propose a thermal cycle vacuum annealing furnace. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a thermal cycle vacuum annealing furnace, which can uniformly heat treat the internal workpieces, and conveniently take out the annealed workpieces, thereby effectively solving the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a thermal cycle vacuum annealing furnace, comprising a supporting frame and a gas injection assembly;

[0006] The supporting frame is internally fixed with a sealed barrel, a temperature sensor and a gas pressure sensor are installed at the lower end in the sealed barrel, a net barrel is fixed in the sealed barrel, a heating assembly is installed in the sealed barrel, a pushing assembly is installed in the net barrel, and a rotating assembly is installed at the rear side of the supporting frame;

[0007] The gas injection assembly comprises a gas injection pipe, a connecting pipe, a fixing frame, a connecting flange, a one-way valve and a brush slip ring, a rotating hole is formed at the rear side of the supporting frame, the gas injection pipe is rotatably connected in the rotating hole, the connecting pipe is rotatably connected in the gas injection pipe, the fixing frame is fixed at the rear side of the supporting frame, a connecting hole is formed at the rear side of the fixing frame, the connecting pipe is fixed in the connecting hole, the connecting flange is fixed at the rear end of the circumferential surface of the connecting pipe, the one-way valve is installed on the circumferential surface of the connecting pipe, the brush slip ring is installed at the front end of the circumferential surface of the gas injection pipe, the rotating assembly is connected with the gas injection pipe, and the front end of the gas injection pipe is connected with the heating assembly;

[0008] The temperature sensor and the air pressure sensor are both electrically connected to the external PLC controller in a bidirectional mode, and the input end of the brush slip ring is electrically connected to the output end of the external PLC controller.

[0009] Further, the heating assembly comprises an L-shaped square tube, an igniter and a spray head, the front end of the gas injection pipe is fixed with the L-shaped square tube, the gas injection pipe is communicated with the inner cavity of the L-shaped square tube, three corresponding openings are formed in the lower side of the L-shaped square tube, the spray head is mounted in the openings, three corresponding igniters are mounted on the lower side of the L-shaped square tube, the igniters correspond to the spray head, the input end of the igniter is electrically connected to the output end of the input end of the brush slip ring, and the workpiece in the net barrel is uniformly heated by the heating assembly.

[0010] Further, the rotating assembly comprises a first motor, a gear and a gear ring, the rear side of the support frame is provided with the first motor, the output shaft of the first motor is fixed with the gear, the circumferential surface of the gas injection pipe is fixed with the gear ring, the gear ring is engaged with the gear, the input end of the first motor is electrically connected to the output end of the external PLC controller, and the rotating assembly drives the gas injection pipe to rotate.

[0011] Further, the pushing assembly comprises a pushing disc, a threaded rod, a limiting rod and a second motor, the rear end of the net barrel is provided with the pushing disc, a threaded hole is formed in the left side of the pushing disc, the threaded hole is in threaded connection with the threaded rod, a limiting hole is formed in the right side of the pushing disc, the limiting rod is in sliding connection with the limiting hole, the limiting rod is fixed in the sealing barrel, the front end of the sealing barrel is provided with the second motor, the output shaft of the second motor is fixed at the front end of the threaded rod, and the input end of the second motor is electrically connected to the output end of the external PLC controller, so that the workpiece after annealing treatment is pushed out.

[0012] Further, an exhaust port is formed in the upper end of the sealing barrel, and a pressure relief pipe is fixed in the exhaust port, and an electromagnetic valve is mounted on the circumferential surface of the pressure relief pipe, so that the pressure relief pipe is used for pressure relief.

[0013] Further, an opening is formed in the front end of the sealing barrel, and a sealing baffle is hingedly connected in the opening, a handle is fixed to the front side of the sealing baffle, an observation port is formed in the front side of the sealing baffle, and a transparent disc is fixed in the observation port, so that the sealing baffle is used for sealing the sealing barrel.

[0014] Compared with the prior art, the hot cycle vacuum annealing furnace has the following advantages:

[0015] 1、 through setting rotating assembly drives gas injection pipe rotation, gas injection pipe rotation in the process drives L-shaped square tube along the outside of the mesh barrel to rotate, so that the three nozzles rotate, at this time the natural gas is injected into the inside of the L-shaped square tube, the natural gas entering the inside of the L-shaped square tube will be sprayed through the three nozzles, at this time the three igniters are started to ignite the natural gas, and the three nozzles rotating can uniformly heat the workpieces in the mesh barrel;

[0016] 2、 through setting pushing assembly, after annealing treatment, the second motor can be started to drive the threaded rod to rotate, the threaded rod drives the pushing disc to move forward, and the pushing disc moving forward can push out the workpieces in the mesh barrel after annealing treatment, so that the high temperature in the furnace can be avoided to scald the hands of the user. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front side structure schematic view of the utility model;

[0018] Figure 2 It is a right side sectional view of the utility model;

[0019] Figure 3 It is a front side structure schematic view of the utility model Figure 2 It is an enlarged view of A in the utility model;

[0020] Figure 4 It is a lower side sectional view of the utility model;

[0021] Figure 5 It is a gas injection assembly structure schematic view of the utility model.

[0022] In the drawing: 1 support frame, 2 sealed barrel, 3 temperature sensor, 4 gas pressure sensor, 5 mesh barrel, 6 heating assembly, 61 L-shaped square tube, 62 igniter, 63 nozzle, 7 gas injection assembly, 71 gas injection pipe, 72 connecting pipe, 73 fixing frame, 74 connecting flange plate, 75 one-way valve, 76 brush slip ring, 8 rotating assembly, 81 first motor, 82 gear, 83 gear ring, 9 pushing assembly, 91 pushing disc, 92 threaded rod, 93 limit rod, 94 second motor, 10 pressure relief pipe, 11 electromagnetic valve, 12 sealing baffle, 13 handle, 14 transparent disc. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-5The embodiment provides a technical scheme: a thermal cycle vacuum annealing furnace which comprises a support frame 1 and an injection assembly 7.

[0025] The support frame 1 is internally fixed with a sealed barrel 2, a temperature sensor 3 and an air pressure sensor 4 are arranged at the lower end in the sealed barrel 2, a mesh barrel 5 is fixed in the sealed barrel 2, a heating assembly 6 is arranged in the sealed barrel 2, a pushing assembly 9 is arranged in the mesh barrel 5, a rotating assembly 8 is arranged at the rear side of the support frame 1, the heating assembly 6 comprises an L-shaped square tube 61, an igniter 62 and a spray head 63, the L-shaped square tube 61 is fixed at the front end of the injection pipe 71, the injection pipe 71 is communicated with the inner cavity of the L-shaped square tube 61, three corresponding openings are formed in the lower side of the L-shaped square tube 61, the spray head 63 is arranged in the openings, three corresponding igniters 62 are arranged on the lower side of the L-shaped square tube 61, the igniters 62 correspond to the spray heads 63, the input end of the igniter 62 is electrically connected with the output end of the input end of the brush slip ring 76, the rotating assembly 8 comprises a first motor 81, a gear 82 and a gear ring 83, the first motor 81 is arranged at the rear side of the support frame 1, the gear 82 is fixed on the output shaft of the first motor 81, the gear ring 83 is fixed on the circumferential surface of the injection pipe 71, the gear ring 83 is engaged with the gear 82, the input end of the first motor 81 is electrically connected with the output end of the external PLC controller, the pushing assembly 9 comprises a pushing disc 91, a threaded rod 92, a limiting rod 93 and a second motor 94, the pushing disc 91 is arranged at the rear end in the mesh barrel 5, a threaded hole is formed in the left side of the pushing disc 91, the threaded rod 92 is threadedly connected in the threaded hole, a limiting hole is formed in the right side of the pushing disc 91, the limiting rod 93 is slidably connected in the limiting hole, the limiting rod 93 is fixed in the sealed barrel 2, the second motor 94 is arranged at the front end of the sealed barrel 2, the output shaft of the second motor 94 is fixed at the front end of the threaded rod 92, the input end of the second motor 94 is electrically connected with the output end of the external PLC controller, the workpiece after annealing treatment is pushed out by the pushing assembly 9, the injection pipe 71 is driven to rotate by the rotating assembly 8, the workpiece in the mesh barrel 5 is uniformly heated by the heating assembly 6.

[0026] The injection assembly 7 comprises the injection pipe 71, a connecting pipe 72, a fixing frame 73, a connecting flange 74, a one-way valve 75 and a brush slip ring 76, a rotating hole is formed in the rear side of the support frame 1, the injection pipe 71 is rotatably connected in the rotating hole, the connecting pipe 72 is rotatably connected in the injection pipe 71, the fixing frame 73 is fixed at the rear side of the support frame 1, a connecting hole is formed in the rear side of the fixing frame 73, the connecting pipe 72 is fixed in the connecting hole, the connecting flange 74 is fixed at the rear end of the circumferential surface of the connecting pipe 72, the one-way valve 75 is arranged on the circumferential surface of the connecting pipe 72, the brush slip ring 76 is arranged at the front end of the circumferential surface of the injection pipe 71, the rotating assembly 8 is connected with the injection pipe 71, the front end of the injection pipe 71 is connected with the heating assembly 6.

[0027] Wherein: temperature sensor 3 and air pressure sensor 4 are both connected with external PLC controller, the input end of brush slip ring 76 is electrically connected with the output end of external PLC controller.

[0028] Wherein: the upper end of sealed barrel 2 is provided with exhaust port, the inside of exhaust port is fixed with pressure relief pipe 10, the circumference of pressure relief pipe 10 is installed with electromagnetic valve 11, pressure relief is realized through pressure relief pipe 10.

[0029] Wherein: the front end of sealed barrel 2 is provided with opening, the inside of opening is hinged with sealed baffle 12, the front side of sealed baffle 12 is fixed with handle 13, the front side of sealed baffle 12 is provided with observation port, the inside of observation port is fixed with transparent disc 14, sealed barrel 2 is sealed through sealed baffle 12.

[0030] The working principle of the thermal cycle vacuum annealing furnace is as follows: first, the workpiece to be annealed is placed in the inside of the net barrel 5, after placement, the first motor 81 is started to make the gear 82 rotate to drive the gear ring 83 to rotate, the gear ring 83 rotates to drive the gas injection pipe 71 to rotate, the gas injection pipe 71 rotates to drive the L-shaped square pipe 61 to rotate along the outside of the net barrel 5, so that the three spray heads 63 rotate, at this time, the natural gas pipeline is connected with the connecting pipe 72, after connection, the natural gas is injected into the inside of the L-shaped square pipe 61 through the connecting pipe 72 and the gas injection pipe 71, the natural gas entering the inside of the L-shaped square pipe 61 is sprayed through the three spray heads 63, at this time, the three igniters 62 are started to ignite the natural gas, after ignition, the three rotating spray heads 63 can uniformly heat the workpiece in the inside of the net barrel 5, after annealing treatment, the second motor 94 can be started to make the threaded rod 92 rotate, the threaded rod 92 rotates to drive the push plate 91 to move forward, the push plate 91 moves forward to push out the workpiece in the inside of the net barrel 5, in this case, the high temperature in the furnace can be avoided to scald the hands of the user, during normal work, the air pressure sensor 4 detects the air pressure in the inside of the sealed barrel 2, when pressure relief is needed, the external PLC controller automatically controls the electromagnetic valve 11 to open to realize pressure relief through the pressure relief pipe 10.

[0031] It is worth noting that the external PLC controller disclosed in the above embodiment is specifically modelled as Siemens S7-200, the temperature sensor 3 can be selected as LSCI-TZ03 laser focusing infrared temperature sensor, the first motor 81 and the second motor 94 can be selected as 1LE0003 three-phase asynchronous motor, the brush slip ring 76, the air pressure sensor 4 and the electromagnetic valve 11 can be freely configured according to the actual application scene, the control switch group controls the work of the first motor 81, the second motor 94 and the electromagnetic valve 11 by using the method commonly used in the prior art.

[0032] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A thermal cycle vacuum annealing furnace characterized by: It includes support frame (1) and gas injection assembly (7); The support frame (1) is internally fixed with a sealed barrel (2), a temperature sensor (3) and a gas pressure sensor (4) are installed at the lower end of the inside of the sealed barrel (2), a net barrel (5) is fixed in the inside of the sealed barrel (2), a heating assembly (6) is installed in the inside of the sealed barrel (2), a pushing assembly (9) is installed in the inside of the net barrel (5), and a rotating assembly (8) is installed at the rear side of the support frame (1); The gas injection assembly (7) includes a gas injection pipe (71), a connecting pipe (72), a fixing frame (73), a connecting flange (74), a one-way valve (75) and a brush slip ring (76), a rotating hole is formed at the rear side of the support frame (1), the gas injection pipe (71) is rotatably connected in the rotating hole, the connecting pipe (72) is rotatably connected in the inside of the gas injection pipe (71), the fixing frame (73) is fixed at the rear side of the support frame (1), a connecting hole is formed at the rear side of the fixing frame (73), the connecting pipe (72) is fixed in the connecting hole, the connecting flange (74) is fixed at the rear end of the circumference of the connecting pipe (72), the one-way valve (75) is installed on the circumference of the connecting pipe (72), the brush slip ring (76) is installed at the front end of the circumference of the gas injection pipe (71), the rotating assembly (8) is connected with the gas injection pipe (71), and the front end of the gas injection pipe (71) is connected with the heating assembly (6); The temperature sensor (3) and the gas pressure sensor (4) are both bidirectionally electrically connected with the external PLC controller, and the input end of the brush slip ring (76) is electrically connected with the output end of the external PLC controller.

2. The thermal cycle vacuum anneal furnace of claim 1, wherein: The heating assembly (6) includes an L-shaped square tube (61), an igniter (62) and a spray head (63), the front end of the gas injection pipe (71) is fixed with the L-shaped square tube (61), the gas injection pipe (71) is communicated with the inner cavity of the L-shaped square tube (61), three corresponding openings are formed at the lower side of the L-shaped square tube (61), the spray head (63) is installed in the openings, three corresponding igniters (62) are installed at the lower side of the L-shaped square tube (61), the igniters (62) correspond to the spray head (63), and the input end of the igniter (62) is electrically connected with the output end of the input end of the brush slip ring (76).

3. The thermal cycle vacuum anneal furnace of claim 1, wherein: The rotating assembly (8) includes a first motor (81), a gear (82) and a gear ring (83), the first motor (81) is installed at the rear side of the support frame (1), the output shaft of the first motor (81) is fixed with the gear (82), the gear ring (83) is fixed on the circumference of the gas injection pipe (71), the gear ring (83) is engaged with the gear (82), and the input end of the first motor (81) is electrically connected with the output end of the external PLC controller.

4. The thermal cycle vacuum anneal furnace of claim 1, wherein: Said pushing assembly (9) contains pushing disc (91), threaded rod (92), limiting rod (93) and second motor (94), the rear end inside the net barrel (5) is provided with pushing disc (91), the left side of pushing disc (91) is provided with threaded hole, the inside of threaded hole is connected with threaded rod (92) in screw thread, the right side of pushing disc (91) is provided with limiting hole, the inside of limiting hole is connected with limiting rod (93) in sliding, limiting rod (93) is fixed in the inside of sealed barrel (2), the front end of sealed barrel (2) is installed with second motor (94), the output shaft of second motor (94) is fixed in the front end of threaded rod (92), the input end of second motor (94) is electrically connected with the output end of external PLC controller.

5. The thermal cycle vacuum anneal furnace of claim 1, wherein: The upper end of the sealed barrel (2) is provided with an exhaust port, the inside of the exhaust port is fixed with a pressure relief pipe (10), the circumference of the pressure relief pipe (10) is installed with a solenoid valve (11).

6. The thermal cycle vacuum anneal furnace of claim 1, wherein: The front end of the sealed barrel (2) is provided with an opening, the inside of the opening is hinged with a sealing baffle (12), the front side of the sealing baffle (12) is fixed with a handle (13), the front side of the sealing baffle (12) is provided with an observation port, the inside of the observation port is fixed with a transparent disc (14).

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