Preheating device for forging stock

Abstract

The utility model discloses a forging stock preheating device, which belongs to the technical field of forging processing and comprises a heating box. A bearing supporting plate and a top plate located above the bearing supporting plate are arranged in the heating box, the lower end face of the bearing supporting plate is connected with an adjusting rod which penetrates through the bottom wall of the heating box and can ascend and descend, the upper end face of the top plate is connected with a marker post which penetrates through the top wall of the heating box and can ascend and descend, and the bearing supporting plate is a concave arc-shaped plate; in the initial state, the middle of the inner arc face of the bearing supporting plate is located on the center line in the heating box. Firstly, the center line of a forging stock is located in the vertical plane where the center line in the heating box is located; afterwards, an adjusting standard is provided through a marker post, an adjusting rod is controlled to drive a bearing supporting plate to descend by a certain distance, the center line of the forging stock can be exactly located in the horizontal plane where the center line in the heating box is located, the center line of the forging stock can be exactly located on the center line in the heating box, and the peripheral side of the forging stock can be evenly heated advantageously.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of forging processing, in particular to a forging blank preheating device. Background Art

[0002] The process flow of hydraulic pipeline is: raw material inspection - cutting blank - heating forging blank - die forging blank - quenching - shot blasting - automatic CNC machining - deburring - electrolysis, electroplating - final inspection - storage. Among them, the heating process of forging blank is to heat the blank to 880-950℃ with electricity according to product requirements to make it uniformly austenitized. Usually, the forging blank needs to be placed in a preheating device for preheating.

[0003] At present, in the prior art, a forging preheating device is disclosed in the patent with the authorization announcement number CN 218340913 U. The device includes a base, and a clamping assembly for fixing the short forging, a traction assembly for guiding the movement of the long forging, and a preheating assembly for heating the forging. The preheating assembly includes a heating box arranged above the base, an electromagnetic induction coil is installed in the inner cavity of the heating box, and an electromagnetic heater is fixed to the bottom of the heating box. In this device, it is not easy to control the forging to be accurately located on the center line of the heating box, resulting in the problem of insufficient uniformity of heating around the forging. Utility Model Content

[0004] The technical solution of the utility model aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. It mainly provides a forging billet preheating device to solve the technical problem raised in the above background technology that the forging billet cannot be easily controlled to be accurately located on the center line of the heating box.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A forging preheating device comprises a heating box; a bearing tray and a top plate located above the bearing tray are arranged in the heating box, an adjusting rod passing through the bottom wall of the heating box and capable of being raised and lowered is connected to the lower end face of the bearing tray, a marking rod passing through the top wall of the heating box and capable of being raised and lowered is connected to the upper end face of the top plate, and the bearing tray is a concave arc-shaped plate; in an initial state, the middle of the inner arc surface of the bearing tray is located on the inner center line of the heating box.

[0007] Furthermore, the upper end of the pole extends to above the heating box and is connected to a limiting block. In an initial state, the limiting block is in close contact with the upper end surface of the heating box.

[0008] Furthermore, the pole is marked with scale lines along its height direction.

[0009] Furthermore, a ruler rod linked to the benchmark is provided on the top of the heating box, and a linkage structure is provided between the benchmark and the ruler rod, the transmission ratio of the linkage structure is 2:1, and scale lines are marked on the ruler rod.

[0010] Furthermore, a horizontally arranged fixing plate is connected to the bottom of the heating box, a bolt threadedly connected to the fixing plate is provided through the fixing plate, the bolt is connected to the lower end of the adjusting rod through a bearing, and the adjusting rod is marked with scale lines.

[0011] Furthermore, a meter mounted on the top surface of the heating box is provided on one side of the pole.

[0012] Furthermore, an electric telescopic rod for driving the adjusting rod to move up and down is provided below the heating box, and the bottom of the electric telescopic rod is installed on a bottom plate, and the bottom plate is connected to the bottom of the heating box through a connecting rod.

[0013] Furthermore, the bottom of the heating box is connected to support legs supported on the ground.

[0014] Furthermore, the carrying plate is evenly distributed with through holes.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model is provided with a bearing tray and a top plate located above the bearing tray in a heating box, and the back sides of the bearing tray and the top plate are connected with an adjusting rod and a benchmark rod respectively, and the bearing tray is a concave arc plate; in the initial state, the middle of the inner arc surface of the bearing tray is located on the inner center line of the heating box. In application, when placing the forging billet, since the bearing tray is a concave arc plate, the forging billet is automatically located in the middle of the bearing tray under the action of gravity, that is, the center line of the forging billet is located in the vertical plane where the inner center line of the heating box is located; thereafter, the height at which the top plate is lifted can be determined by the benchmark rod to determine the height of the forging billet, and the adjusting rod is controlled to drive the bearing tray to drop half of the height of the forging billet, so that the center line of the forging billet can be located just in the horizontal plane where the inner center line of the heating box is located. The combination of the two can make the center line of the forging billet just located on the inner center line of the heating box, which is conducive to promoting uniform heating around the forging billet.

[0017] The utility model can achieve the purpose of making the center line of the forging blank just located on the center line inside the heating box through the bearing support plate, the top plate, the adjusting rod and the benchmark rod, and has a simple structure and is convenient to use.

[0018] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model in the third embodiment;

[0020] Figure 2 It is a vertical cross-sectional view of the utility model in the third embodiment;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the load-bearing tray in the utility model;

[0022] Figure 4 This is the front view of the utility model in the first embodiment;

[0023] Figure 5 It is a vertical cross-sectional view of the utility model in the second embodiment.

[0024] Reference numerals:

[0025] 1. Heating box; 2. Load-bearing pallet; 3. Top plate; 4. Adjustment rod; 5. Standard rod; 6. Limit block; 7. Meter; 8. Ruler rod; 9. Electric telescopic rod; 10. Bottom plate; 11. Connecting rod; 12. Support leg; 13. Bolt; 14. Through hole; 15. Fixing plate. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] Example 1: Please refer to the attached Figure 2A forging preheating device comprises a heating box 1; a bearing plate 2 and a top plate 3 located above the bearing plate 2 are arranged in the heating box 1; an adjusting rod 4 passing through the bottom wall of the heating box 1 and capable of lifting and lowering is connected to the lower end surface of the bearing plate 2; a mark rod 5 passing through the top wall of the heating box 1 and capable of lifting and lowering is connected to the upper end surface of the top plate 3; the bearing plate 2 is a concave arc plate; in the initial state, the middle of the inner arc surface of the bearing plate 2 is located on the inner center line of the heating box 1. The bearing plate 2, the top plate 3, the adjusting rod 4 and the mark rod 5 are all made of high temperature resistant heat insulation materials.

[0030] In this embodiment, please refer to the attached Figure 1 The upper end of the rod 5 extends to the top of the heating box 1 and is connected to the limit block 6. Under the action of gravity, the rod 5 descends until the limit block 6 is close to the upper end surface of the heating box 1. The rod 5 cannot continue to descend. At this time, the lower end surface of the top plate 3 is located in the horizontal plane where the center line of the heating box 1 is located. The setting of the limit block 6 can prevent the rod 5 from detaching from the top of the heating box 1.

[0031] In this embodiment, the reference rod 5 is marked with scale lines along its height direction, and the "0" scale is located above the top surface of the heating box 1. In the initial state, the scale on the reference rod 5 corresponding to the top surface of the heating box 1 is the distance from the bottom surface of the top plate 3 to the horizontal plane where the center line of the interior of the heating box 1 is located. The bottom of the heating box 1 is connected to a horizontally arranged fixing plate 15, and a bolt 13 threadedly connected to the fixing plate 15 is provided through the fixing plate 15. The bolt 13 is connected to the lower end of the adjusting rod 4 through a bearing. The bolt 13 can be rotated and moved downward relative to the fixing plate 15 under the action of the thread, driving the adjusting rod 4 to move downward; the adjusting rod 4 is marked with scale lines, and the "0" scale is located at the bottom aligned with the bottom surface of the heating box 1. The height to which the adjusting rod 4 descends can be clearly controlled by the scale lines.

[0032] In this embodiment, please refer to the attached Figure 4 The bottom of the heating box 1 is connected to a support leg 12 supported on the ground. The support leg 12 leaves enough space at the bottom of the heating box 1 for adjusting the adjustment rod 4.

[0033] In this embodiment, please refer to the attached Figure 3 The carrying plate 2 is evenly distributed with through holes 14 to ensure the heating effect of the lower part of the forging blank.

[0034] The working principle of the forging preheating device is as follows: in the initial state, the middle of the inner arc surface of the support plate 2 is located on the inner center line of the heating box 1, and the distance between the bottom surface of the top plate 3 and the horizontal plane where the inner center line of the heating box 1 is located is L0 (i.e., the reading on the mark rod 5 at this time). When putting in the forging, first move the top plate 3 upwards and place the forging on the support plate 2. Since the support plate 2 is a concave arc plate, the forging is automatically located in the middle of the support plate 2 under the action of gravity, that is, the center line of the forging is located in the vertical plane where the inner center line of the heating box 1 is located.

[0035] Then loosen the top plate 3. The top plate 3 rests on the top of the forging blank under the action of gravity. At this time, the distance L1 driven by the top plate 3 to raise the mark rod 5 is L1. At this time, the reading on the mark rod 5 is the sum of L0 and L1, that is, the height of the forging blank. Take half of this value (L0+L1) / 2 as the adjustment control standard of the adjusting rod 4, turn the bolt 13, drive the adjusting rod 4 to descend, until the scale corresponding to L / 2 on the adjusting rod 4 is aligned with the bottom surface of the heating box 1, and the supporting plate 2 descends with the adjusting rod 4 by a distance of (L0+L1) / 2. At this time, the center line of the forging blank is just located in the horizontal plane where the center line of the heating box 1 is located. Combined with the aforementioned fact that the center line of the forging blank is already located in the vertical plane where the center line of the heating box 1 is located, the center line of the forging blank is finally located on the center line of the heating box 1, which is conducive to promoting uniform heating around the forging blank.

[0036] Embodiment 2: This embodiment differs from Embodiment 1 in that:

[0037] In this embodiment, please refer to the attached Figure 5 A ruler rod 8 linked to the benchmark rod 5 is provided on the top of the heating box 1, and a linkage structure is provided between the benchmark rod 5 and the ruler rod 8, the transmission ratio of the linkage structure is 2:1, scale lines are marked on the ruler rod 8, and a pointer is also provided on one side of the ruler rod 8. In the initial state, the scale on the ruler rod 8 corresponding to the pointer is half of the distance between the bottom surface of the top plate 3 and the horizontal plane where the center line inside the heating box 1 is located, which is L0 / 2; after the forging billet is placed, the top plate 3 is lifted up, and after the transmission of the linkage mechanism, the ruler rod 8 moves a distance of L1 / 2. At this time, the reading of the scale line on the ruler rod 8 is exactly L0 / 2+L1 / 2, that is, (L0+L1) / 2.

[0038] For details, please refer to the attached Figure 5 The linkage structure includes a first rack fixedly connected to the benchmark rod 5, a first gear meshingly located on one side of the first rack, and a transmission ratio between the first rack and the first gear is 1:1; a second rack fixedly connected to the ruler rod 8, a second gear meshingly located on one side of the second rack, and a transmission ratio between the second rack and the second gear is 1:1; the central axes of the first gear and the second gear are connected by a belt transmission structure, and the diameter ratio of the two pulleys of the belt transmission structure is 1:2.

[0039] The rest is the same as the first embodiment.

[0040] Embodiment 3: This embodiment differs from Embodiment 1 in that:

[0041] In this embodiment, please refer to the attached Figure 1 -Attached Figure 2 A meter 7 installed on the top surface of the heating box 1 is provided on one side of the benchmark 5, which can automatically detect that the rising distance of the benchmark 5 is L1. Based on the initial state, the distance between the bottom surface of the top plate 3 and the horizontal plane where the center line of the inside of the heating box 1 is located is determined to be L0; an electric telescopic rod 9 for driving the adjustment rod 4 to move up and down is provided at the bottom of the heating box 1. The bottom of the electric telescopic rod 9 is installed on the bottom plate 10, and the bottom plate 10 is connected to the bottom of the heating box 1 through a connecting rod 11. When adjusting the adjustment rod 4, (L0+L1) / 2 is assigned to the electric telescopic rod 9, and the adjustment rod 4 is accurately driven to descend a corresponding distance.

[0042] The rest is the same as the first embodiment.

[0043] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A forging preheating device, comprising a heating box (1); characterized in that: The heating box (1) is provided with a bearing tray (2) and a top plate (3) located above the bearing tray (2); the lower end surface of the bearing tray (2) is connected to an adjusting rod (4) that passes through the bottom wall of the heating box (1) and can be raised and lowered; the upper end surface of the top plate (3) is connected to a marking rod (5) that passes through the top wall of the heating box (1) and can be raised and lowered; the bearing tray (2) is a concave arc-shaped plate; in an initial state, the middle of the inner arc surface of the bearing tray (2) is located on the inner center line of the heating box (1).

2. A forging preheating device according to claim 1, characterized in that: The upper end of the marking rod (5) extends to the top of the heating box (1) and is connected to the limiting block (6). In an initial state, the limiting block (6) is in close contact with the upper end surface of the heating box (1).

3. A forging preheating device according to claim 1, characterized in that: The pole (5) is marked with scale lines along its height direction.

4. A forging preheating device according to claim 1, characterized in that: The top of the heating box (1) is provided with a ruler rod (8) linked to the benchmark rod (5), and a linkage structure is provided between the benchmark rod (5) and the ruler rod (8), the transmission ratio of the linkage structure is 2:1, and the ruler rod (8) is marked with scale lines.

5. A forging blank preheating device according to claim 3 or 4, characterized in that: The bottom of the heating box (1) is connected to a horizontally arranged fixing plate (15), and a bolt (13) threadedly connected to the fixing plate (15) is provided through the fixing plate (15), and the bolt (13) is connected to the lower end of the adjusting rod (4) via a bearing, and the adjusting rod (4) is marked with a scale line.

6. A forging preheating device according to claim 1, characterized in that: A meter (7) mounted on the top surface of the heating box (1) is provided on one side of the benchmark (5).

7. A forging preheating device according to claim 6, characterized in that: An electric telescopic rod (9) for driving the adjusting rod (4) to move up and down is provided below the heating box (1); the bottom of the electric telescopic rod (9) is mounted on a bottom plate (10); and the bottom plate (10) is connected to the bottom of the heating box (1) via a connecting rod (11).

8. A forging preheating device according to claim 1, characterized in that: The bottom of the heating box (1) is connected to support legs (12) supported on the ground.

9. A forging blank preheating device according to claim 1, characterized in that: The carrying support plate (2) is evenly distributed with through holes (14).

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