Hot-forged bolt controlled cooling line with controlled cooling function

Abstract

The utility model discloses a hot forging bolt control cooling line with control cooling function, including mounting bracket, be arranged with cooling line on the mounting bracket, the cooling line is composed of n hollow box and transmission subassembly, the whole is by high to low and is arranged in the oblique line, the transmission subassembly is located the most below, the transmission subassembly below is arranged with the collection frame, the cooling line is arranged with n+1 blower directly above, the top of hollow box is currently provided with the box cover, the bottom of hollow box is the openwork board, and the cooling line appears multiple cooling states through the opening and closing blower and the box cover. Compared with the control cooling line of crankshaft, connecting rod and other parts, the utility model is simple in design, and low in cost, utilizes gravity and the transmission belt rotating speed to control the movement rate of bolt, does not need large -scale driving equipment, saves the input cost, and compared with the traditional material frame cooling mode, the cooling efficiency and cooling effect are all improved.

Description

Technical Field

[0001] This utility model relates to the technical field of hot forging bolt controlled cooling equipment, specifically to a hot forging bolt controlled cooling line with controlled cooling function. Background Technology

[0002] Large bolts typically require heating and hot forging into hexagonal or round head shapes using a die. They are then subjected to overall heat treatment to achieve the desired microstructure and properties. Generally, after hot forging, bolts are placed in a stock cooler for slow cooling, and the cooling rate and post-cooling microstructure and properties are uncontrollable. With the rapid promotion of environmentally friendly bolts, such as non-quenched and tempered steel bolts, which require less heat treatment, hot-forged bolts no longer undergo heat treatment; instead, ideal microstructure and properties are achieved directly through controlled post-forging cooling. This renders the traditional post-forging stock cooler method inadequate. Furthermore, for relatively mature non-quenched and tempered components like crankshafts and connecting rods, bolts are small, cool quickly, and have low profit margins. Continuing with the cooling lines used for larger non-quenched and tempered components like crankshafts and connecting rods would be too costly. Therefore, a suitable post-forging controlled cooling line needs to be designed. Utility Model Content

[0003] The purpose of this invention is to provide a controlled cooling line for hot forging bolts with controlled cooling function, so as to solve the above-mentioned shortcomings in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a controlled cooling line for hot forged bolts, comprising a mounting frame on which a cooling line is arranged. The cooling line consists of n hollow boxes and a conveying assembly, arranged diagonally from high to low. The conveying assembly is located at the bottom, and a collection frame is arranged below the conveying assembly. n+1 blowers are arranged directly above the cooling line. A cover is rotatably mounted on the top of each hollow box, and the bottom of each hollow box is a perforated plate. Multiple cooling states can be achieved on the cooling line by opening and closing the blowers and the cover.

[0005] Furthermore, an inclined rectangular frame is fixedly connected to the mounting bracket, and the hollow box is fixedly connected to the top of the rectangular frame.

[0006] Furthermore, the conveying assembly includes a drive roller and a driven roller, and a conveyor belt is externally connected to the drive roller and the driven roller. Several stop teeth are fixedly connected at equal intervals on the outer side of the conveyor belt, and the upper side of the conveyor belt is arranged obliquely along the hollow plate of the previous hollow box.

[0007] Furthermore, the height of the stop tooth is 5-10cm.

[0008] Furthermore, baffles are provided on both sides of the conveying component, and the baffles are fixedly connected to the top of the rectangular frame.

[0009] Furthermore, two symmetrically arranged adsorption plates are fixedly connected to the mounting frame, and permanent magnets are fixedly connected to the inner side of the adsorption plates. The box cover is made of iron alloy, and after the box cover is flipped relative to the hollow box body, its side is adsorbed onto the permanent magnets.

[0010] Furthermore, a mounting frame is fixedly connected to the mounting bracket, and the blower is mounted on the mounting frame, with one blower corresponding to the top of each hollow box and conveying component.

[0011] Furthermore, the bottom of the mounting frame is fixedly connected with a partition and reinforcing ribs, and the collection frame is placed on the top surface of the partition.

[0012] In the above technical solution, the hot forging bolt controlled cooling line with controlled cooling function provided by this utility model has the following beneficial effects:

[0013] Compared to the controlled cooling lines for components such as crankshafts and connecting rods, this utility model has a simple design and low cost. The movement speed of the bolts can be controlled by gravity and the speed of the conveyor belt, eliminating the need for large drive equipment and saving investment costs. At the same time, compared with the traditional material frame cooling method, its cooling efficiency and cooling effect are improved.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0015] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 A structural schematic diagram provided for an embodiment of this utility model;

[0018] Figure 2 A cross-sectional view provided for an embodiment of this utility model;

[0019] Figure 3 A front view of the non-working state provided in an embodiment of this utility model;

[0020] Figure 4 A front view of the working state provided for an embodiment of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Mounting frame; 11. Partition; 12. Reinforcing rib; 2. Rectangular frame; 21. Baffle; 3. Adsorption plate; 31. Permanent magnet; 4. Hollow box; 41. Box cover; 5. Mounting frame; 6. Blower; 61. Air guide nozzle; 7. Conveying assembly; 71. Drive roller; 72. Driven roller; 73. Conveyor belt; 74. Baffle tooth; 8. Collection frame. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0024] Please see Figures 1-4 A controlled cooling line for hot forged bolts includes a mounting frame 1, on which a cooling line is arranged. The cooling line consists of n hollow boxes 4 and a conveying assembly 7, arranged diagonally from high to low. The conveying assembly 7 is located at the bottom, and a collection frame 8 is arranged below the conveying assembly 7. n+1 blowers 6 are arranged directly above the cooling line. A box cover 41 is rotatably installed on the top of the hollow box 4, and the bottom of the hollow box 4 is a hollow plate. Multiple cooling states can be achieved on the cooling line by opening and closing the blowers 6 and the box cover 41.

[0025] Specifically, the high-temperature bolts, which reach a temperature of 900℃~1200℃ after forging, are placed inside the hollow box 4 at the highest position. As they slide down onto the conveyor assembly 7, they are blocked by the stop teeth 74. The conveyor belt 73 continues to transport the bolts. By adjusting the rotation speed of the drive roller 71, the speed at which the bolts slide down is controlled. Finally, the bolts fall into the collection frame 8 from the farthest end of the conveyor belt 73 away from the hollow box 4.

[0026] When the cover 41 is not opened, the bolts inside are in a heat-insulating state and the cooling rate is very slow. Opening the cover 41 increases the cooling rate. Combined with the blowing action of the blower 6, the cooling rate of the bolts is controlled in two stages. Furthermore, by using different opening and closing combinations of the cover 41 on multiple hollow boxes 4 and the opening and closing of multiple blowers 6, multiple different cooling sections are achieved, realizing segmented controlled cooling. This meets the requirements of different cooling rates at different temperature sections for non-adjustable steel bolts during cooling, and allows ideal microstructure properties to be obtained without heat treatment after hot forging.

[0027] Furthermore, a rectangular frame 2 arranged at an angle is fixedly connected to the mounting bracket 1, and a hollow box 4 is fixedly connected to the top of the rectangular frame 2. The hollow box 4 is welded to the top of the rectangular frame 2, and multiple hollow boxes 4 are arranged in sequence.

[0028] Furthermore, the conveying assembly 7 includes a drive roller 71 and a driven roller 72. The drive roller 71 and the driven roller 72 are externally connected to a conveyor belt 73. Several stop teeth 74 are fixedly connected at equal intervals on the outer side of the conveyor belt 73. The upper side of the conveyor belt 73 is arranged obliquely along the hollow plate of the previous hollow box 4. The height of the stop teeth 74 is 5-10cm.

[0029] Specifically, the height of the stop tooth 74 is 5cm, and the length of the bolt being processed is also 5cm. The drive roller 71, the driven roller 72 and the conveyor belt 73 are connected by chain drive. The drive roller 71 is driven by a motor, which in turn drives the conveyor belt 73 to move. The bolt falling from the bottom hollow box 4 enters between the two stop teeth 74 and is transported away.

[0030] Furthermore, baffles 21 are provided on both sides of the conveying assembly 7. The baffles 21 are fixedly connected to the top of the rectangular frame 2. The two baffles 21 are located on both sides of the conveying assembly 7 to prevent the bolts from falling off from both sides of the conveying assembly 7.

[0031] Furthermore, two symmetrically arranged adsorption plates 3 are fixedly connected to the mounting frame 1. Permanent magnets 31 are fixedly connected to the inner side of the adsorption plates 3. The box cover 41 is made of iron alloy. After the box cover 41 is flipped relative to the hollow box 4, its side is adsorbed onto the permanent magnets 31. When the box cover 41 is rotated relative to the hollow box 4, the top of the box cover 41 extends between the two permanent magnets 31 and is adsorbed, thus achieving the positioning of the box cover 41.

[0032] Furthermore, a mounting frame 5 is fixedly connected to the mounting bracket 1, and a blower 6 is installed on the mounting frame 5. Each hollow box 4 and the conveying component 7 has a corresponding blower 6 directly above it. The air outlet of the blower 6 is detachably fitted with an air guide nozzle 61. By changing the air outlet cross section and air direction through the air guide nozzle 61, the blower 6 blows air directly onto the bolts inside the hollow box 4 below.

[0033] Furthermore, the bottom of the mounting frame 1 is fixedly connected with a partition 11 and a reinforcing rib 12, and the collection frame 8 is placed on the top surface of the partition 11.

[0034] In this utility model, a cooling line arrangement is exemplified, with reference to... Figures 1 to 4It includes four hollow boxes 4. The lids 41 of the second and fourth hollow boxes 4 are open, and the blower 6 located above the fourth hollow box 4 is turned on. At this time, the cooling rate of the first and third hollow boxes 4 in the cooling line is slow, the second hollow box 4 is naturally cooled, and the fourth hollow box 4 has the largest cooling rate. After the bolt is forged, it enters the slow cooling zone, the natural cooling zone, the slow cooling zone, and the fast cooling zone respectively, and finally enters the collection frame 8. Through controlled cooling after forging, an ideal microstructure with more ferrite and finer lamellar pearlite can be obtained, with small thermal stress and small deformation.

[0035] If necessary, the number of hollow boxes 4 in the cooling line of this utility model can be increased to 6-8 to further improve the cooling control accuracy, or reduced to 2-3 to reduce costs.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A controlled cooling line for hot-forged bolts, comprising a mounting bracket (1), characterized in that: The mounting frame (1) is equipped with a cooling line, which consists of n hollow boxes (4) and a conveying assembly (7). The entire assembly is arranged diagonally from high to low. The conveying assembly (7) is located at the bottom. A collection frame (8) is arranged below the conveying assembly (7). n+1 blowers (6) are arranged directly above the cooling line. A box cover (41) is rotatably installed on the top of the hollow box (4). The bottom of the hollow box (4) is a hollow plate. By opening and closing the blowers (6) and the box cover (41), multiple cooling states can be achieved on the cooling line.

2. The controlled cooling line for hot forged bolts with controlled cooling function according to claim 1, characterized in that, An inclined rectangular frame (2) is fixedly connected to the mounting bracket (1), and the hollow box (4) is fixedly connected to the top of the rectangular frame (2).

3. A controlled cooling line for hot-forged bolts with controlled cooling function according to claim 1, characterized in that, The conveying assembly (7) includes a drive roller (71) and a driven roller (72). The drive roller (71) and the driven roller (72) are externally connected to a conveyor belt (73). A number of stop teeth (74) are fixedly connected at equal intervals on the outer side of the conveyor belt (73). The upper side of the conveyor belt (73) is arranged obliquely along the hollow plate of the previous hollow box (4).

4. A controlled cooling line for hot forged bolts with controlled cooling function according to claim 3, characterized in that, The height of the stop tooth (74) is 5-10cm.

5. A controlled cooling line for hot-forged bolts with controlled cooling function according to claim 2, characterized in that, Both sides of the conveying component (7) are provided with baffles (21), and the baffles (21) are fixedly connected to the top of the rectangular frame (2).

6. A controlled cooling line for hot-forged bolts with controlled cooling function according to claim 1, characterized in that, Two symmetrically arranged adsorption plates (3) are fixedly connected to the mounting frame (1). A permanent magnet (31) is fixedly connected to the inner side of the adsorption plate (3). The box cover (41) is made of iron alloy. After the box cover (41) is flipped relative to the hollow box (4), its side is adsorbed onto the permanent magnet (31).

7. A controlled cooling line for hot forged bolts with controlled cooling function according to claim 1, characterized in that, A mounting frame (5) is fixedly connected to the mounting bracket (1), and the blower (6) is mounted on the mounting frame (5). There is a blower (6) directly above each hollow box (4) and conveying component (7).

8. A controlled cooling line for hot forged bolts with controlled cooling function according to claim 1, characterized in that, The bottom of the mounting bracket (1) is fixedly connected to a partition (11) and a reinforcing rib (12), and the collection frame (8) is placed on the top surface of the partition (11).

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