Medium-frequency induction heating furnace

Abstract

The utility model discloses a medium-frequency induction heating furnace, which relates to the technical field of heating furnaces, and comprises a heating furnace main body and a guide rail assembly arranged on the heating furnace main body, and the heating furnace main body is provided with a feeding hole. When the bearing plate is used, the inlet and outlet connector is communicated and connected with an external water pump, then the water pump is started to work, the water pump can pump cooling liquid or clean water into the cooling pipe, the cooling pipe can absorb heat on the bearing plate, and the bearing plate is prevented from being heated for a long time; after the cooling liquid or the clear water is temporarily kept in the cooling pipe for a period of time, the cooling liquid or the clear water absorbs enough heat at the moment, the cooling liquid or the clear water in the cooling pipe can be discharged through the water pump, then the cooling liquid or the clear water is conveyed into the cooling pipe again, the cooling pipe is cooled again, and the circulation is repeated. And the temperature of the cooling pipe cannot be in a high level for a long time, and the cooling pipe is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnaces, in particular to a medium frequency induction heating furnace. Background Art

[0002] The medium frequency induction heating furnace is a power supply device that converts 50HZ industrial frequency AC into medium frequency (300HZ or above to 20KHZ), converts three-phase industrial frequency AC into DC after rectification, and then converts DC into adjustable medium frequency current, which is supplied to the medium frequency alternating current flowing through the capacitor and induction coil, generating high-density magnetic lines in the induction coil, and cutting the metal material contained in the induction coil, generating large eddy currents in the metal material. This eddy current also has some properties of medium frequency current, that is, the free electrons of the metal itself flow in the metal body with resistance to generate heat, thereby completing the heating of the workpiece.

[0003] During the production and processing of bearing rings, a medium frequency induction heating furnace is required to heat the metal bar material for subsequent cutting, upsetting and other operations. The middle part of the existing medium frequency induction heating furnace is provided with a feeding hole for the workpiece to pass through, and a guide rail is provided in the feeding hole. The guide rail is generally composed of two metal cooling pipes arranged in parallel. Circulating cooling water is passed through the cooling pipes. The workpiece moves on the cooling pipes. During the movement, the workpiece will transfer a large amount of heat to the guide rail. The cooling water is used to cool this part of the heat to prevent the guide rail from being damaged by heat. However, when the workpiece moves on the guide rail, friction will be generated between the workpiece and the guide rail, so that the guide rail composed of the metal cooling pipe is easy to be worn and broken. Therefore, the service life of the guide rail is short. At the same time, after the guide rail is worn and broken, the cooling water is easy to leak out, causing the medium frequency induction heating furnace to short-circuit and cause dangerous accidents.

[0004] After searching, the patent document (authorization announcement number is CN211400757U) discloses a medium frequency induction heating furnace, including a heating furnace body, a feeding hole is horizontally opened in the middle of the heating furnace body, a guide rail mechanism is arranged in the feeding hole, the guide rail mechanism includes a bracket and a guide plate, the bracket is vertically arranged inside the feeding hole, the bottom end of the bracket is fixedly connected to the bottom of the inner wall of the feeding hole, the guide plate is fixedly installed on the top of the bracket, and the top of the guide plate is also spaced apart with balls.

[0005] The above-mentioned heating furnace supports the workpiece by means of a bracket and a guide plate, and balls are arranged at intervals at the top of the guide plate, so that the workpiece can move better on the guide plate. Compared with the guide rail design of the metal cooling tube in the prior art, the wear between the workpiece and the guide rail mechanism is small, the service life of the guide rail mechanism is long, and the safety factor is high; however, during the use of the heating furnace, no corresponding cooling components are provided, which may easily cause the guide plate to be heated for a long time, shorten its service life, and increase the production cost.

[0006] To this end, we propose a medium frequency induction heating furnace to solve the problem that the heating furnace in the prior art is not equipped with corresponding cooling components during use, which easily causes the guide plate to be heated for a long time, shortens the service life of the guide plate, and increases production costs. Utility Model Content

[0007] 1. Technical issues to be solved

[0008] During use, the heating furnace in the prior art is not provided with corresponding cooling components, which easily causes the guide plate to be heated for a long time, shortening its service life and increasing the production cost.

[0009] (II) Technical solution

[0010] In order to solve the above problems, the utility model provides the following technical solutions:

[0011] A medium frequency induction heating furnace comprises a heating furnace body and a guide rail assembly arranged on the heating furnace body, wherein:

[0012] The heating furnace body is provided with a feeding hole;

[0013] The guide rail assembly includes a bearing plate and two cooling pipes, the bearing plate is arranged on the feed hole, and protective sleeves are fixedly arranged on the bottom of both sides of the bearing plate, the two protective sleeves are arranged opposite to each other, and the two protective sleeves are arranged along the length direction of the bearing plate, the two cooling pipes are respectively arranged in one-to-one correspondence with the two protective sleeves, and the two cooling pipes are respectively inserted into the corresponding protective sleeves, and the two cooling pipes are provided with inlet and outlet joints.

[0014] As a further solution of the utility model: the cooling pipe is configured as a spiral as a whole.

[0015] As a further solution of the present invention: the carrying plate is configured as a semicircle as a whole.

[0016] As a further solution of the utility model: a plurality of lifting members are movably arranged on the inner side of the carrying plate, and the plurality of lifting members are arranged relatively to each other.

[0017] As a further solution of the utility model: the lifting member includes an arc-shaped strip adapted to the inner side of the supporting plate, and a slide groove is provided at the end of the supporting plate along its length direction, and one end of each of the arc-shaped strips is slidably mounted on the slide groove.

[0018] As a further solution of the utility model: a fastening bolt is provided at one end of the arc-shaped strip located in the slide slot, and the fastening bolt is used to lock the end of the arc-shaped strip on the slide slot.

[0019] As a further solution of the utility model: a plurality of balls are arranged on the inner side of the arc-shaped strip along its length direction.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. When in use, first connect the inlet and outlet joints to the external water pump, and then start the water pump. The water pump will pump coolant or clean water into the cooling pipe. The cooling pipe can absorb the heat on the load-bearing plate to prevent the load-bearing plate from being heated for a long time. After the coolant or clean water stays in the cooling pipe for a period of time, the coolant or clean water has absorbed enough heat. The water pump can be used to discharge the coolant or clean water in the cooling pipe, and then the coolant or clean water is re-transported into the cooling pipe to cool the cooling pipe again. This cycle can prevent the temperature of the cooling pipe from being at a high level for a long time, thereby protecting the cooling pipe.

[0023] 2. By setting the cooling tube as a whole in a spiral shape, the spiral cooling tube can increase the accommodation volume inside the protective sleeve, so that the coolant or clean water inside the cooling tube can quickly absorb the heat on the carrier plate, and the absorption effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the overall structure of the load-bearing plate in the utility model;

[0027] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0028] Figure 4 yes Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0029] Figure 5 It is a schematic diagram of the front view structure of another shape of the cooling pipe in the utility model.

[0030] In the figure: 1. Heating furnace body; 2. Feed hole; 3. Load-bearing plate; 4. Cooling pipe; 5. Protective sleeve; 6. Inlet and outlet joints; 7. Arc-shaped strip; 8. Slide groove; 9. Fastening bolts; 10. Ball bearing. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] like Figure 1-Figure 4 As shown, a medium frequency induction heating furnace comprises a heating furnace body 1, a feeding hole 2 is opened on the heating furnace body 1, a guide rail assembly is arranged on the feeding hole 2, and the guide rail assembly can be used to conveniently transport the workpiece to the interior of the heating furnace body 1.

[0033] Specifically, the guide rail assembly includes a supporting plate 3 and two cooling tubes 4, the supporting plate 3 is arranged on the feed hole 2, and protective sleeves 5 are fixedly arranged on the bottom of both sides of the supporting plate 3, the two protective sleeves 5 are arranged opposite to each other, and the two protective sleeves 5 are arranged along the length direction of the supporting plate 3, the two cooling tubes 4 are respectively arranged in one-to-one correspondence with the two protective sleeves 5, and the two cooling tubes 4 are respectively inserted into the corresponding protective sleeves 5, and the two cooling tubes 4 are provided with inlet and outlet joints 6.

[0034] When in use, first connect the inlet and outlet joints 6 to an external water pump (not shown in the figure), and then start the water pump. The water pump will pump the coolant or clean water into the interior of the cooling pipe 4, and the cooling pipe 4 can absorb the heat on the carrier plate 3 to prevent the carrier plate 3 from being heated for a long time; after the coolant or clean water stays in the cooling pipe 4 for a period of time, the coolant or clean water has absorbed enough heat, and the water pump can be used to discharge the coolant or clean water in the cooling pipe 4, and then the coolant or clean water is re-delivered to the cooling pipe 4 to cool the cooling pipe 4 again. This cycle is repeated, so that the temperature of the cooling pipe 4 will not be at a high level for a long time, thereby protecting the cooling pipe 4.

[0035] like Figure 5 As shown, in order to improve the cooling tube 4's absorption effect on the load-bearing plate 3, the cooling tube 4 is overall arranged in a spiral shape in this embodiment. The spiral cooling tube 4 can increase the accommodation volume inside the protective sleeve 5, so that the coolant or clean water inside the cooling tube 4 can quickly absorb the heat on the load-bearing plate 3, and the absorption effect is good.

[0036] In order to support the workpiece well, the supporting plate 3 can be set as a semicircle as a whole; at the same time, multiple lifting members are movably arranged on the inner side of the supporting plate 3, and the multiple lifting members are relatively arranged, and the workpiece can be better lifted and transported by using multiple lifting members.

[0037] Specifically, for the setting of the above-mentioned lifting member, the lifting member includes an arc-shaped strip 7 adapted to the inner side of the carrying plate 3, and a slide groove 8 is provided at the end of the carrying plate 3 along its length direction, and one end of the plurality of arc-shaped strips 7 is slidably mounted on the slide groove 8; a fastening bolt 9 is provided at one end of the arc-shaped strip 7 located at the slide groove 8, and the fastening bolt 9 is used to lock the end of the arc-shaped strip 7 on the slide groove 8. According to the different types of workpieces to be processed, the positions of the plurality of arc-shaped strips 7 on the slide groove 8 can be adjusted, and the fastening bolt 9 is used to lock them after the adjustment is completed.

[0038] At the same time, in order to facilitate the movement of the workpiece on the multiple arc-shaped strips 7, multiple balls 10 can be arranged on the inner side of the arc-shaped strips 7 along the length direction thereof. The arrangement of the balls 10 can assist the moving workpiece.

[0039] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A medium frequency induction heating furnace, characterized in that: It comprises a heating furnace body (1) and a guide rail assembly arranged on the heating furnace body (1), wherein: The heating furnace body (1) is provided with a feed hole (2); The guide rail assembly comprises a bearing plate (3) and two cooling pipes (4), wherein the bearing plate (3) is arranged on the feed hole (2), and protective sleeves (5) are fixedly arranged at the bottom of both sides of the bearing plate (3), the two protective sleeves (5) are arranged opposite to each other, and the two protective sleeves (5) are arranged along the length direction of the bearing plate (3), the two cooling pipes (4) are arranged in one-to-one correspondence with the two protective sleeves (5), and the two cooling pipes (4) are respectively inserted into the corresponding protective sleeves (5), and the two cooling pipes (4) are provided with inlet and outlet joints (6).

2. A medium frequency induction heating furnace according to claim 1, characterized in that: The cooling pipe (4) is configured as a spiral as a whole.

3. A medium frequency induction heating furnace according to claim 1, characterized in that: The carrying plate (3) is configured as a semicircle as a whole.

4. A medium frequency induction heating furnace according to claim 3, characterized in that: A plurality of lifting members are movably arranged on the inner side of the bearing plate (3), and the plurality of lifting members are arranged relative to each other.

5. A medium frequency induction heating furnace according to claim 4, characterized in that: The supporting member comprises an arc-shaped strip (7) adapted to the inner side of the supporting plate (3); a slide groove (8) is provided at the end of the supporting plate (3) along its length direction; one end of each of the arc-shaped strips (7) is slidably mounted on the slide groove (8).

6. A medium frequency induction heating furnace according to claim 5, characterized in that: A fastening bolt (9) is provided at one end of the arc-shaped strip (7) located in the slide groove (8), and the fastening bolt (9) is used to lock the end of the arc-shaped strip (7) on the slide groove (8).

7. A medium frequency induction heating furnace according to claim 6, characterized in that: A plurality of rolling balls (10) are arranged on the inner side of the arc-shaped strip (7) along its length direction.

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