Preheating device for steel coil

Abstract

The utility model discloses a preheating device for a steel coil, which belongs to the technical field of steel coil production and comprises a heating box and a plurality of groups of heating rods, the top of the heating box is fixedly connected with a lifting cylinder, the output end of the lifting cylinder penetrates through the heating box and is fixedly connected with a connecting disc, and the plurality of groups of heating rods are circumferentially arrayed at the bottom of the connecting disc. A plurality of transverse plates are fixedly connected to the inner wall of the bottom of the heating box, a plurality of vertical plates are slidably connected to the transverse plates, and placing plates are slidably connected to the vertical plates. The position of the steel coil is adjusted through the vertical plate and the placing plate, so that the steel coil is concentrically aligned with the connecting disc, then the lifting air cylinder is started to drive the connecting disc to move downwards, the connecting disc drives the multiple sets of heating rods to move downwards to the outer wall and the middle position of the steel coil, and synchronous heating is conducted through the inner side and the outer side of the steel coil; and the heating uniformity and the heating efficiency of the steel coil of the steel grade are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel coil production, in particular to a preheating device for steel coils. Background Art

[0002] The steel coils commonly used in the new energy field are mainly hot-rolled silicon steel and cold-rolled silicon steel. As one of the three core components of new energy vehicles, silicon steel plays a magnetic conductive role in the motor. Insulating paint is applied between silicon steel sheets to insulate the silicon steel sheets from each other and reduce eddy current losses.

[0003] Preheating is an important part of silicon steel production. Its main purpose is to eliminate the internal stress generated by silicon steel during cold rolling and improve the magnetic and mechanical properties of the material. Preheating can make the lattice structure inside the silicon steel more orderly, while promoting the diffusion and redistribution of elements between the lattices. In addition, preheating can also improve the forming performance of silicon steel. During the forming process, if the silicon steel is not preheated, the forming effect may not be ideal, and cracks, deformation and other problems may occur. After preheating, the plasticity and toughness of silicon steel will be improved, which is conducive to improving the precision and quality of forming.

[0004] In the prior art, when preheating silicon steel coils, the coils are usually placed directly into a heating chamber, and then heated by the resistance wire inside the heating chamber to transfer the temperature to the silicon steel coils. However, in this heating method, the resistance wires on the inner wall of the heating chamber cannot fully cover the heat conduction of the silicon steel coils. The position of the resistance wire has the highest heating temperature for the silicon steel coils. The heating temperature at other positions can only be heated by the resistance wires to heat the air inside the heating chamber, and then transferred to the silicon steel coils for heating. This results in a slow heating speed for the silicon steel coils, increases the preheating time, and reduces the preheating efficiency. Utility Model Content

[0005] The utility model aims to provide a preheating device for a steel coil to solve the above problems in the prior art.

[0006] A preheating device for steel coils is provided, comprising a heating box and a heating rod, wherein a lifting cylinder is fixedly connected to the top of the heating box, an output end of the lifting cylinder passes through the heating box and is fixedly connected to a connecting plate, multiple groups of heating rods are arranged in a circular array at the bottom of the connecting plate, multiple groups of horizontal plates are fixedly connected to the inner wall of the bottom of the heating box, multiple groups of vertical plates are slidably connected to the multiple groups of horizontal plates, and a placement plate is slidably connected to the vertical plates.

[0007] Furthermore, a heating rod is also fixedly connected to the middle of the bottom of the connection plate.

[0008] Furthermore, a transverse sliding groove is provided on the transverse plate, and the vertical plate is slidably connected inside the transverse sliding groove.

[0009] Furthermore, a vertical slide groove is provided on the top of the vertical plate, a limit block is slidably connected inside the vertical slide groove, and the placement plate is fixedly connected to the top of the limit block.

[0010] Furthermore, a plurality of groups of balls are arranged inside the bottom of the transverse slide groove and the vertical slide groove.

[0011] Furthermore, a partition plate is fixedly connected in the middle of the heating box, and a plurality of through grooves are provided on the partition plate, and the plurality of through grooves cooperate with the plurality of heating rods.

[0012] Furthermore, a temperature sensor is arranged inside the heating box.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, the position of the special steel coil is adjusted by means of a vertical plate and a placing plate, so that the special steel coil is concentrically aligned with the connecting disk, and then the lifting cylinder is started to drive the connecting disk to move downward, and the connecting disk drives multiple groups of heating rods to move downward to the outer wall and the middle position of the special steel coil, and then the heating rods are started to heat the special steel coil, and the inner and outer sides of the special steel coil are heated synchronously, thereby improving the uniformity and heating efficiency of the special steel coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This utility model Figure 1 The enlarged structural cross-sectional diagram of part A in the middle;

[0018] Figure 3 It is a bottom structural schematic diagram of the connecting plate in the utility model.

[0019] In the figure: 1. Heating box; 101. Partition plate; 102. Through groove; 2. Placement plate; 3. Lifting cylinder; 4. Connecting plate; 5. Heating rod; 6. Horizontal plate; 601. Horizontal slide groove; 7. Vertical plate; 701. Vertical slide groove; 702. Limit block; 8. Ball bearing; 9. Temperature sensor; 10. Push door. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 3 As shown, in the embodiment of the utility model, a preheating device for steel coils includes a heating box 1 and a heating rod 5, wherein an opening is provided on one side of the bottom of the heating box 1 for pushing in and taking out special steel coils, and a slidable push door 10 is provided at the position of the outer wall of the opening for opening and closing the opening. Then a lifting cylinder 3 is fixedly connected to the top of the heating box 1, and the output end of the lifting cylinder 3 passes through the heating box 1 and is fixedly connected to a connecting plate 4, and there are multiple groups of heating rods 5, and the multiple groups of heating rods 5 are arranged in a circular array at the bottom of the connecting plate 4, and multiple groups of horizontal plates 6 are fixedly connected to the inner wall of the bottom of the heating box 1, and multiple groups of vertical plates 7 are slidably connected to the multiple groups of horizontal plates 6, and a placement plate 2 is slidably connected to the vertical plate 7, and the placement plate 2 is used to place special steel coils.

[0023] Furthermore to the above description, the shape of the heating box 1 can be set to be a cuboid. The heating box 1 is assembled by welding threaded steel into a skeleton, which is then closed with galvanized sheet material, and then asbestos cloth is laid on the inner wall for insulation. At the same time, multiple sets of connecting plates 4 and placement plates 2 can be set inside, and multiple sets of special steel coils can be placed at the same time for synchronous preheating.

[0024] Furthermore, a heating rod 5 is also fixedly connected in the middle of the bottom of the connecting disk 4. When the connecting disk 4 drives the heating rods 5 in the circular array at other positions to move downward, the heating rods 5 in the middle position move together and move to the center of the special steel coil, so that multiple groups of heating rods 5 can heat the outside and inside of the special steel coil simultaneously, thereby improving the efficiency of preheating and reducing the heating time.

[0025] like Figure 1 and Figure 2As shown, in order to improve the stability of the position adjustment of the special steel coil on the placement plate 2, a horizontal slide groove 601 is opened on the above-mentioned horizontal plate 6, and the vertical plate 7 is slidably connected inside the horizontal slide groove 601, so as to limit the sliding of the vertical plate 7, and improve the sliding stability of the vertical plate 7, and a vertical slide groove 701 is opened on the top of the vertical plate 7, and the vertical slide groove 701 is slidably connected to the limiting block 702, and the placement plate 2 is fixedly connected to the top of the limiting block 702, so as to limit the sliding of the placement plate 2 through the limiting block 702, and improve the sliding stability of the placement plate 2, and a plurality of groups of balls 8 are arranged inside the bottom of the horizontal slide groove 601 and the vertical slide groove 701. Through the arrangement of the balls 8, the sliding resistance caused by the weight of the special steel coil is reduced, and the smoothness of the sliding adjustment is improved.

[0026] like Figure 1 As shown, in order to reduce the temperature loss, a partition plate 101 is fixedly connected in the middle of the heating box 1 mentioned above. The partition plate 101 divides the heating box 1 into two groups of cavities of the same size, and a plurality of groups of through grooves 102 are opened on the partition plate 101. The plurality of through grooves 102 cooperate with the plurality of heating rods 5, so as to facilitate the heating rods 5 to slide downward from the upper side of the partition plate 101 to the lower side, and heat the special steel coil placed below the partition plate 101. After the heating is completed, the heating rod 5 moves upward through the through grooves 102 to the upper side of the partition plate 101.

[0027] like Figure 1 As shown, a temperature sensor 9 is provided inside the heating box 1 mentioned above, and the temperature inside the heating box 1 is sensed and controlled by the temperature sensor 9. After the special steel coil inside the heating box 1 is heated to 60°C, the heating is stopped.

[0028] The working principle of the utility model is as follows: when the user uses it, the user uses a forklift to place the special steel coil through the opening on one side of the heating box 1 onto the placement plate 2 inside the heating box 1, and then pushes the front or rear side of the special steel coil. The special steel coil drives the vertical plate 7 to slide inside the horizontal slide groove 601 on the horizontal plate 6 through the placement plate 2, thereby adjusting the horizontal position of the special steel coil, so that the horizontal position of the special steel coil is aligned horizontally with the center line of the connecting disk 4, and then pushes the special steel coil from the left or right side of the special steel coil, and the special steel coil drives the limit block 702 to slide vertically inside the vertical slide groove 701 through the placement plate 2, thereby adjusting the vertical position of the special steel coil, so that the vertical position of the special steel coil is aligned vertically with the center line of the connecting disk 4. By adjusting the horizontal and vertical positions of the special steel coil, the special steel coil is aligned with the center point of the connecting disk 4. Then the lifting cylinder 3 is started, and the lifting cylinder 3 drives the heating rod 5 at the bottom of the connecting plate 4 to move downward, and the multiple groups of heating rods 5 move downward to the outer wall position of the special steel coil in a circular array, and then the multiple groups of heating rods 5 are started for heating, and the heating temperature is transferred to the outer wall of the special steel coil, so that the special steel coil is heated isothermally and equidistantly, thereby improving the uniformity and efficiency of heating.

[0029] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A preheating device for a steel coil, comprising a heating box (1) and a heating rod (5), characterized in that: The top of the heating box (1) is fixedly connected to a lifting cylinder (3), the output end of the lifting cylinder (3) passes through the heating box (1) and is fixedly connected to a connecting plate (4), there are multiple groups of heating rods (5), and the multiple groups of heating rods (5) are arranged in a circular array at the bottom of the connecting plate (4), and the bottom inner wall of the heating box (1) is fixedly connected to multiple groups of horizontal plates (6), and multiple groups of vertical plates (7) are slidably connected to the multiple groups of horizontal plates (6), and the vertical plates (7) are slidably connected to a placement plate (2).

2. A preheating device for a steel coil according to claim 1, characterized in that: A heating rod (5) is also fixedly connected to the middle of the bottom of the connection plate (4).

3. A preheating device for a steel coil according to claim 1, characterized in that: The horizontal plate (6) is provided with a horizontal sliding groove (601), and the vertical plate (7) is slidably connected inside the horizontal sliding groove (601).

4. A preheating device for a steel coil according to claim 3, characterized in that: A vertical slide groove (701) is provided on the top of the vertical plate (7), a limit block (702) is slidably connected inside the vertical slide groove (701), and the placement plate (2) is fixedly connected to the top of the limit block (702).

5. A preheating device for a steel coil according to claim 4, characterized in that: Multiple groups of balls (8) are arranged inside the bottom of the transverse slide groove (601) and the vertical slide groove (701).

6. A preheating device for a steel coil according to claim 1, characterized in that: A partition plate (101) is fixedly connected in the middle of the heating box (1), and a plurality of groups of through grooves (102) are provided on the partition plate (101). The plurality of groups of through grooves (102) cooperate with the plurality of groups of heating rods (5).

7. A preheating device for a steel coil according to claim 1, characterized in that: A temperature sensor (9) is arranged inside the heating box (1).

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