Cartridge case heating device

Abstract

The utility model belongs to the field of induction heating, and particularly relates to a cartridge case heating device which comprises at least two induction heating devices which are sequentially arranged in the conveying direction of a workpiece, and each induction heating device is connected with an independent lifting mechanism, so that the workpiece is sequentially matched with the at least two induction heating devices for heating. The at least two induction heating devices are sequentially arranged in the workpiece conveying direction, on one hand, the heating time is divided into a plurality of parts, namely, a multi-stage heating mode is adopted, and multi-stage heating is carried out in series, on the other hand, selective shutdown can be carried out in actual use, and the situation that a single inductor works for a long time, so that the working efficiency is improved is avoided. The service life of the inductor is prolonged, and the maintenance time of the device is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of induction heating, specifically relates to a shell heating device. BACKGROUND

[0002] Shell is the peripheral device of the projectile body, and its quality influences the use effect and storage life of the shell. In recent years, with the expansion of the application field of induction heating, induction heating technology is applied to the field of military products. At present, the shell heat treatment is still the old heating method such as CN200520105921.0, and the single inductor heating needs a long time to reach the requirement of the shell heating process by using the single-stage heating mode, and there are problems of low heating efficiency and short service life caused by the long-time continuous work of the inductor. CONTENT OF UTILITY MODEL

[0003] In order to solve the above problems, the utility model provides a shell heating device.

[0004] The utility model discloses a shell heating device, including at least two induction heating equipment that are arranged in sequence along the workpiece transport direction, each induction heating equipment is connected with an independent lifting mechanism 14, so that the workpiece is heated in sequence with at least two induction heating equipment.

[0005] Further, the lifting mechanism 14 includes the bottom plate 9, the bottom plate 9 is fixedly connected with the lifting seat 15, the lifting seat 15 is fixedly connected with the slide rail, the slide rail is slidably connected with the sliding block, the sliding block is fixedly connected with the support 10, and the support 10 is fixedly connected with the induction heating equipment;The rod seat of push rod 16 is rotatably connected on the bottom plate 9, and the output end of push rod 16 is rotatably connected with the bottom of support 10.

[0006] Further, the induction heating equipment includes the transformer 12, the transformer 12 is fixedly connected with the support 10, the output end of transformer 12 is connected with the inductor 13, the inductor 13 is the coil structure that is wound by hollow copper pipe, and the coil is connected with the cooling waterway.

[0007] Further, it further includes the heating chamber 4, the two sides of heating chamber 4 are provided with openings respectively, and the openings of the two sides form the passageway for the workpiece transport between the two sides;At least two induction heating equipment and corresponding lifting mechanism 14 are sequentially arranged on the side of the passageway, the bottom plate 9 of lifting mechanism 14 is fixed with the bottom surface of heating chamber 4, the side of the passageway is further provided with crossbeam 7, the crossbeam 7 is fixedly connected with heating chamber 4, temperature probe 8 is fixed on the crossbeam 7, and the number and position of temperature probe 8 correspond to the induction heating equipment.

[0008] Further, the support 10 is fixedly connected with one end of the drag chain 11, the other end of the drag chain 11 is fixedly connected with the inner side of heating chamber 4, and the inner side of heating chamber 4 is connected with the end of drag chain 11.

[0009] Further, the heating chamber 4 side is provided with water cooling machine 1 and high frequency power supply 3, water cooling machine 1 connects waterway one end, waterway other end passes through heating chamber 4 side hole and drag chain 11 and inductive heating equipment connection in proper order with induction heating equipment connection;High frequency power supply 3 connects circuit one end, circuit other end passes through heating chamber 4 side hole and drag chain 11 and inductive heating equipment connection in proper order.

[0010] Relative to the prior art, the utility model discloses at least two inductive heating equipment are sequentially arranged along the workpiece transport direction, one aspect, the heating time is divided into multiple parts, that is, the mode of multistage heating, and the total heating time of single shell when multistage heating can be same with the time of using single stage heating.The production speed of the whole production line is promoted to the multiple of single stage heating, on the other hand, the inductor works also be affected by workpiece back heat, long time work, influence inductor life, actual use when also can selectively stop, avoid single inductor long time work, prolong the service life of inductor, shorten the maintenance time of device. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is the whole structure schematic diagram of shell heating device;

[0012] Fig. 2 It is the structure schematic diagram of heating chamber;

[0013] Fig. 3 It is the structure schematic diagram of inductive heating equipment and lifting mechanism.

[0014] Among them, 1 water cooling machine, 2 power supply frame, 3 high frequency power supply, 4 heating chamber, 5 installation platform, 6 air pressure gauge, 7 crossbeam, 8 temperature probe, 9 bottom plate, 10 support, 11 drag chain, 12 transformer, 13 inductor, 14 lifting mechanism, 15 lifting seat, 16 push rod. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0016] In the present invention, unless otherwise expressly specified and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0017] As attached Figs. 1-3 As shown, a cartridge case heating device comprises at least two induction heating devices sequentially arranged along the workpiece transport direction, each induction heating device is connected to an independent lifting mechanism 14, so that the workpiece is heated in conjunction with the at least two induction heating devices in sequence.

[0018] In detail, "at least two induction heating devices are arranged in sequence" and "the workpiece is heated in sequence with at least two induction heating devices", that is, the workpiece can be heated in sequence with multiple induction heating devices, but not necessarily with every induction heating device in sequence, that is, at least one of the induction heating devices can be shut down for rest during operation to prevent long-term operation from shortening its service life.

[0019] The distance between the multiple induction heating devices is preferably the same as the distance between the workpieces on the transport line, so that multiple workpieces can be heated simultaneously.

[0020] Furthermore, the lifting mechanism 14 includes a base plate 9, to which a lifting seat 15 is fixedly connected. In detail, the lifting seat 15 is an L-shaped rod, the bottom edge of the L-shape is bolted to the base plate 9, and the side edge of the L-shape is fixedly connected to the slide rail. A triangular reinforcing rib is provided between the bottom edge and the side edge of the L-shape for support. The slide rail slides with a slider, and the slider is fixedly connected to the bracket 10. The bracket 10 is preferably an L-shaped plate, one side of the L-shaped plate is fixed to the slider, and the other side of the L-shaped plate is arranged horizontally, and the induction heating equipment is fixed on the top. A triangular reinforcing rib is provided between the two plates of the L-shaped plate for support. The L-shaped rod, the L-shaped plate and its triangular reinforcing ribs are all arranged to improve the support for the heavier induction heating equipment, and the induction heating equipment is fixedly connected to the bracket 10; the rod seat of the push rod 16 rotatably connected to the base plate 9 is preferably connected through an axis and an axis seat, and the output end of the push rod 16 is rotatably connected to the bottom of the bracket 10, preferably a universal joint connection.

[0021] The push rod 16 can be an oil cylinder, an air cylinder, or an electric push cylinder, preferably an air cylinder.

[0022] Further, the induction heating device comprises a transformer 12 fixedly connected with the support 10, and the output end of the transformer 12 is connected with an inductor 13. The inductor 13 is a coil structure wound by a hollow copper pipe. The coil is connected with a cooling water circuit. The connection between the transformer and the hollow copper pipe inductor is prior art and will not be described in detail. The coil is wound in multiple turns, which is better for surrounding the shell during heating and makes the heating more uniform.

[0023] In detail, the shell heating device is used in cooperation with a shell conveying line for heating. The shell conveying line comprises a conveying mechanism running in one direction, and the vertical shells are placed on the conveying mechanism at intervals. A clamping mechanism is arranged on the conveying mechanism and used for clamping the shells to keep them vertical and pass through the induction heating device from below. The conveying mechanism and the clamping mechanism are mature prior art and will not be modified in this application. Therefore, they will not be described in detail.

[0024] Further, the heating chamber 4 can be a polygonal house structure, preferably a cuboid structure as shown in the figure. Openings are arranged on two opposite sides of the heating chamber 4, preferably two opposite sides. A channel for transporting the workpieces is formed between the openings of the two sides. At least two induction heating devices and corresponding lifting mechanisms 14 are arranged in the channel in sequence. The bottom plate 9 of the lifting mechanism 14 is fixed to the bottom surface of the heating chamber 4. The bottom surface of the heating chamber 4 is preferably supported on the ground by four or more supporting legs, so that the bottom plate is off the ground. The supporting legs are preferably made of insulating material to better insulate and ensure safety. A cross beam 7 is arranged in the channel. The cross beam 7 is fixedly connected with the heating chamber 4. A temperature probe 8 is fixed on the cross beam 7. The number and position of the temperature probes 8 correspond to the induction heating devices. In detail, the cross beam 7 and the induction heating devices are arranged on the same side of the channel. The number of the temperature probes 8 is the same as the number of the induction heating devices, and the temperature probes 8 are located below the inductors 13 of the corresponding induction heating devices. The temperature probes are used for detecting the temperature of the heated workpieces.

[0025] Further, one end of the drag chain 11 is fixedly connected with the support 10, and the other end of the drag chain 11 is fixedly connected with the inner side of the heating chamber 4. A through hole is arranged on the side of the connection between the inner side of the heating chamber 4 and the end of the drag chain 11. In detail, the through hole can be a hole opened on the wall of the heating chamber 4. Preferably, as shown in Fig. 2 two parallel transverse beams are arranged on the wall of the heating chamber 4. A gap is formed between the two transverse beams, and no baffle is arranged in the gap for passing the circuits and water circuits of all the induction heating devices.

[0026] Further, the heating chamber 4 side is provided with water cooling machine 1 and high frequency power supply 3, water cooling machine 1 and high frequency power supply 3 are prior art, the number of high frequency power supply 3 can correspond to the number of induction heating equipment, and is installed on the power supply frame 2, the water cooling machine 1 is connected with one end of the water circuit, and the other end of the water circuit is connected with the induction heating equipment in turn through the side hole of the heating chamber 4 and the drag chain 11; the high frequency power supply 3 is connected with one end of the circuit, and the other end of the circuit is connected with the induction heating equipment in turn through the side hole of the heating chamber 4 and the drag chain 11.

[0027] Further, the heating chamber 4 can also be provided with a barometer 6, the barometer 6 is connected with the push rod 16 through the gas circuit, the barometer 6 and the temperature probe 8 are electrically connected with the controller, and these control circuits can be arranged in the heating chamber 4, which is irrelevant to the high frequency circuit.

[0028] Work flow, here taking three induction heating equipment in the figure as an example, the actual working condition is different from this and adaptive change is made:

[0029] 1. Turn on the power supply and water source;

[0030] 2. Start the workpiece flow line, the workpiece flow line forwards the workpiece, when the first workpiece reaches below the first inductor 13, the workpiece flow line stops moving, and moves to the workpiece heating position under the drive of the push rod 16, starts heating the workpiece, and the temperature probe 8 detects the temperature of the workpiece;

[0031] 3. When the heating time is reached, the first inductor 13 rises, the workpiece flow line moves forward by one station, the first inductor 13 and the second inductor 13 fall down, the workpiece below the first inductor 13 is heated to the first level, and the workpiece below the second inductor 13 is heated to the second level;

[0032] 4. When the heating time is reached, the first inductor 13 and the second inductor 13 rise, the workpiece flow line moves forward by one station, the three inductors 13 fall down, the workpiece below the first inductor 13 is heated to the first level, the workpiece below the second inductor 13 is heated to the second level, and the workpiece below the third inductor 13 is heated to the third level;

[0033] 5. Thereafter, each workpiece is heated to three levels.

[0034] Advantages:

[0035] The single-stage heating mode needs a long time to reach the requirement of the shell heating process, and is not convenient for the design of the workpiece assembly line. The heating time is divided into multiple parts, that is, the multi-stage heating mode, the multi-stage heating is carried out in series, and the total heating time of a single shell in multi-stage heating is the same as that of the single-stage heating. At this time, the heating process of the shell is divided into multiple series, and the heating time of the shell in each stage is one divided by the single-stage heating, and the production speed of the whole production line is multiplied by the single-stage heating.

[0036] The multi-stage heating mode can adjust the temperature rising rate of each stage of the shell by controlling the output power of the heating inductor of each stage, and different heating methods can be used for different materials and shapes of the shell to obtain the best heating effect.

[0037] The inductor itself generates heat when working, so the inductor is internally provided with cooling water. However, the cooling effect of the cooling water will decrease obviously after a long time of work. The multi-stage heating mode avoids long-time work of a single inductor, prolongs the service life of the inductor, and shortens the maintenance time of the device.

[0038] The temperature control precision is high, the whole workpiece is uniformly heated, and the heat treatment quality of the workpiece is improved.

[0039] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the present application, some changes and improvements can be made, which should also be regarded as the protection range of the present application.

Claims

1. A cartridge heating device, characterized by: The device comprises at least two induction heating devices arranged in sequence along the direction of workpiece transportation, each induction heating device being connected with an independent lifting mechanism (14) so that the workpiece is heated in sequence with the at least two induction heating devices.

2. A cartridge heating device as in claim 1, wherein: The lifting mechanism (14) comprises a bottom plate (9) fixedly connected with a lifting seat (15), the lifting seat (15) being fixedly connected with a sliding rail, the sliding rail being slidingly connected with a sliding block, the sliding block being fixedly connected with a bracket (10), and the bracket (10) being fixedly connected with the induction heating device; the bottom plate (9) is rotatably connected with a rod seat of a push rod (16), and the output end of the push rod (16) is rotatably connected with the bottom of the bracket (10).

3. A cartridge heating device as in claim 2, wherein: The induction heating device comprises a transformer (12) fixedly connected with the bracket (10), and the output end of the transformer (12) is connected with an inductor (13), the inductor (13) being a coil structure wound by a hollow copper tube, and the coil being connected with a cooling water circuit.

4. A cartridge heating device as in claim 2, wherein: The device further comprises a heating chamber (4), two sides of the heating chamber (4) being respectively provided with openings, and a channel for workpiece transportation being formed between the openings of the two sides; at least two induction heating devices and corresponding lifting mechanisms (14) are arranged in sequence at the side of the channel, the bottom plate (9) of the lifting mechanism (14) being fixed with the bottom surface of the heating chamber (4), a cross beam (7) being further arranged at the side of the channel, the cross beam (7) being fixedly connected with the heating chamber (4), a temperature probe (8) being fixedly arranged on the cross beam (7), and the number and position of the temperature probe (8) corresponding to the induction heating device.

5. A cartridge heating device as in claim 2, wherein: The bracket (10) is fixedly connected with one end of a drag chain (11), the other end of the drag chain (11) being fixedly connected with the inner side of the heating chamber (4), and a through hole being arranged at the side of the connection between the inner side of the heating chamber (4) and the end of the drag chain (11).

6. A cartridge heating device as in claim 5, wherein: The heating chamber (4) is provided with a water chiller (1) and a high-frequency power supply (3) at the side thereof, the water chiller (1) being connected with one end of a water circuit, the other end of the water circuit being connected with the induction heating device in sequence through the through hole at the side of the heating chamber (4) and the drag chain (11); the high-frequency power supply (3) being connected with one end of a circuit, the other end of the circuit being connected with the induction heating device in sequence through the through hole at the side of the heating chamber (4) and the drag chain (11).

Images