A heat treatment device for aluminum alloy wheel hub that effectively improves yield rate

Abstract

The utility model relates to the technical field of wheel hub heat treatment, and specifically discloses an aluminum alloy wheel hub heat treatment device which effectively improves the yield rate, comprising a material rack frame, the top end of the material rack frame is connected to a lifting drive member, both sides of the material rack frame are slidably connected with connecting plates, the top ends of the two connecting plates are connected to a synchronous cylinder, and a mobile mold frame is slidably connected in the material rack frame. The utility model puts the material rack frame into a cooling pool, starts the synchronous cylinder to drive the connecting plate to move up and down slightly, and the connecting plate drives the mobile mold frame to move up and down, and the mold loading frame superimposed on the mobile mold frame will vibrate slightly. When the material rack frame enters the water, impurities generated by the high-temperature aluminum alloy wheel hub below after contacting the water will be dispersed by the vibration of the mobile mold frame and multiple aluminum alloy wheel hubs, avoiding direct migration to the upper aluminum alloy wheel hub, resulting in the formation of a covering film on the upper aluminum alloy wheel hub, resulting in uneven cooling.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub heat treatment, and specifically designs an aluminum alloy wheel hub heat treatment device which can effectively improve the yield. Background Art

[0002] The manufacturing process of aluminum alloy wheels mainly includes smelting and casting, heat treatment, machining and surface treatment. Heat treatment plays a vital role in the production process of aluminum alloy wheels. It not only affects the performance and reliability of the product, but is also directly related to the safety and durability of the final product.

[0003] The applicant has retrieved some prior art to achieve simultaneous heat treatment of multiple aluminum alloy wheel hubs. For example, the patent publication number is "CN213327740U". Its main technical means is to place the aluminum alloy wheel hub that needs to be heat treated on a disc first, then stack multiple discs to form a hub material disc rack, and then stack multiple hub material disc racks to form a material frame, so as to achieve the purpose of simultaneous heat treatment of multiple wheel hubs. Its technical disadvantage is that during the quenching stage of heat treatment, when the high-temperature wheel hub is quickly cooled in water, a film composed of steam and impurities will be formed on its surface. Since multiple wheel hubs are stacked together, impurities generated by the lower wheel hub after contacting water will migrate to the upper wheel hub to form a covering layer. This impurity covering layer will hinder the effective contact between water and the wheel hub surface, resulting in uneven cooling process, thereby affecting the quenching effect of the upper wheel hub, and then reducing the overall yield rate. Based on this, the inventor purposefully provides an aluminum alloy wheel hub heat treatment device that can ensure the quenching effect of each wheel hub and effectively improve the yield rate when heat treating multiple wheel hubs at the same time. Summary of the invention

[0004] The purpose of the utility model is to address the deficiencies of the prior art and to provide an aluminum alloy wheel hub heat treatment device that can ensure the quenching effect of each wheel hub and effectively improve the yield when heat treating multiple wheel hubs at the same time, so as to solve the problem in the prior art that when multi-layered wheel hubs are cooled in water, the upper wheel hub is affected by the lower wheel hub, resulting in uneven quenching and cooling effect.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A heat treatment device for aluminum alloy wheel hubs which effectively improves the yield rate comprises a material rack frame, the top of the material rack frame is connected to a lifting drive component, both sides of the material rack frame are slidably connected with connecting plates, the tops of the two connecting plates are connected to a synchronous cylinder, a mobile mold frame is slidably connected inside the material rack frame, the two sides of the bottom end of the mobile mold frame are respectively connected to the bottom ends of the two connecting plates, a plurality of mold loading frames are slidably connected inside the material rack frame, the plurality of mold loading frames are sequentially stacked on the mobile mold frame, and a plurality of aluminum alloy wheel hubs are arranged in each mold loading frame.

[0007] As a further optimization or improvement of this solution.

[0008] A plurality of limit assemblies are arranged in the material rack frame, and the limit assemblies include a round rod, an eccentric block and a limit rod. The round rod and the limit rod are fixedly mounted in the material rack frame, and the eccentric block is rotatably mounted on the round rod. One end of the eccentric block abuts against the bottom of the I-type loading frame, and the other end of the eccentric block abuts against the limit rod.

[0009] As a further optimization or improvement of this solution.

[0010] The limiting assembly also includes a limiting block, which is fixedly mounted on the eccentric block, and the limiting block abuts against two sides of the bottom end of the I-type loading frame.

[0011] As a further optimization or improvement of this solution.

[0012] The material rack frame is provided with a material discharging notch, and the level of the material discharging notch is flush with the eccentric block with the highest level in the material rack frame.

[0013] As a further optimization or improvement of this solution.

[0014] The movable tool frame and each tool loading frame are provided with a plurality of through holes.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model places multiple aluminum alloy wheel hubs in a work-type loading frame, and then stacks the multiple work-type loading frames on a mobile work-type frame. When the material frame is placed in the cooling pool, the synchronous cylinder is started to drive the connecting plate to move up and down slightly, and the connecting plate will drive the mobile work-type frame to move up and down, and the work-type loading frame stacked on the mobile work-type frame will vibrate slightly. When the material frame enters the water, the impurities generated by the high-temperature aluminum alloy wheel hub below after contacting the water will be dispersed by the vibration of the mobile work-type frame and the multiple aluminum alloy wheel hubs, avoiding direct migration to the upper aluminum alloy wheel hub, resulting in the formation of a covering film on the upper aluminum alloy wheel hub, resulting in uneven cooling.

[0017] 2. The vibration of the loading frame of the utility model will also drive the aluminum alloy wheel inside it to vibrate slightly in the water, and the slight vibration of the aluminum alloy wheel in the water accelerates the process of steam film rupture, avoiding the problem of slow rupture of the steam film formed on the high-temperature aluminum alloy wheel in the early stage of quenching, resulting in slow cooling, thereby improving the efficiency of quenching cooling.

[0018] 3. The utility model adopts the method of stacking I-type loading frames from bottom to top. When each I-type loading frame moves upward, it will push the I-type loading frame above it to move upward, thereby continuously stacking the I-type loading frames into the material rack frame. Since multiple aluminum alloy wheels are placed in each I-type loading frame, their weight is relatively heavy. In this way, the I-type loading frames are stacked one by one from bottom to top, which optimizes the placement operation and avoids the problem of generating a large impact force when the new I-type loading frame is placed on the top of the stack due to its heavy weight when stacking the I-type loading frames from top to bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 This is a schematic diagram of the eccentric block structure of the utility model.

[0022] The figure shows:

[0023] 1. Material rack frame; 2. Work-type loading frame; 3. Material discharge notch; 4. Aluminum alloy wheel hub; 5. Round rod; 6. Eccentric block; 7. Limit rod; 8. Limit block; 9. Mobile work-type rack; 10. Connecting plate. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-Figure 2A heat treatment device for aluminum alloy wheel hubs that effectively improves the yield rate includes a material rack frame 1, the top of the material rack frame 1 is connected to a lifting drive member, both sides of the material rack frame 1 are slidably connected with connecting plates 10, the tops of the two connecting plates 10 are connected to a synchronous cylinder, a mobile mold frame 9 is slidably connected inside the material rack frame 1, and the two sides of the bottom of the mobile mold frame 9 are respectively connected to the bottom ends of the two connecting plates 10, a plurality of mold loading frames 2 are slidably connected inside the material rack frame 1, and the plurality of mold loading frames 2 are sequentially superimposed on the mobile mold frame 9, and a plurality of aluminum alloy wheel hubs 4 are arranged in each mold loading frame 2.

[0026] In a specific embodiment, the lifting drive member may be a reciprocating cylinder, a hydraulic rod or other components, or other mechanisms capable of realizing lifting motion, which are not specifically limited in this embodiment; it should be noted that the synchronous cylinder described in this application is a prior art, and this application has not improved it. Therefore, there is no need to disclose its specific model, and it does not affect the integrity of this application.

[0027] The working principle of the utility model is as follows: a plurality of aluminum alloy wheel hubs 4 are placed in a work-type loading frame 2, and then the plurality of work-type loading frames 2 are superimposed on a mobile work-type frame 9; first, the material frame frame 1 is passed through a heating device to heat all the aluminum alloy wheel hubs 4 in the material frame 1 to a specific temperature at the same time, that is, solution treatment; secondly, the material frame frame 1 is lowered into a cooling pool through a lifting drive member; at the same time, the synchronous cylinder is started to drive the connecting plate 10 to move up and down slightly, and the connecting plate 10 will drive the mobile work-type frame 9 to move up and down, and the work-type loading frame 2 superimposed on the mobile work-type frame 9 will vibrate slightly; when the material frame 1 enters the water, the impurities generated after the high-temperature aluminum alloy wheel hub 4 below contacts the water will be dispersed by the vibration of the mobile work-type frame 9 and the plurality of aluminum alloy wheel hubs 4, thereby avoiding direct migration to the upper aluminum alloy wheel hub 4, resulting in the formation of a covering film on the upper aluminum alloy wheel hub 4, and uneven cooling.

[0028] And the vibration of the I-type loading frame 2 will also drive the aluminum alloy wheel hub 4 inside it to vibrate slightly in the water. The high-temperature aluminum alloy wheel hub 4 will not only produce impurities when entering the water, but the surrounding water will be immediately heated and vaporized the moment it enters the water, forming a layer of steam film on the surface of the aluminum alloy wheel hub 4. Due to its poor thermal conductivity, the cooling speed of the aluminum alloy wheel hub 4 is relatively slow. As the temperature of the aluminum alloy wheel hub 4 continues to drop, the thickness of the steam film and its stability are gradually reduced until the rupture disappears and enters the next cooling stage. The slight vibration of the aluminum alloy wheel hub 4 in the water accelerates the rupture process of the steam film, thereby improving the efficiency of quenching cooling.

[0029] Specifically, a plurality of limit assemblies are arranged in the material rack frame 1, and the limit assemblies include a round rod 5, an eccentric block 6 and a limit rod 7. The round rod 5 and the limit rod 7 are fixedly installed in the material rack frame 1, and the eccentric block 6 is rotatably installed on the round rod 5. One end of the eccentric block 6 abuts against the bottom of the I-type loading frame 2, and the other end of the eccentric block 6 abuts against the limit rod 7.

[0030] In a specific embodiment, when multiple I-type material loading frames 2 are continuously stacked into the material rack frame 1, it is necessary to place the I-type material loading frame 2 on the mobile I-type frame 9, and then the I-type material loading frame 2 is pushed upward by the rise of the mobile I-type frame 9, and the bottom end of the I-type material loading frame 2 will abut against the eccentric block 6, and cause the eccentric block 6 to deflect upward. When the eccentric block 6 is separated from the I-type material loading frame 2, due to the blocking effect of the limit rod 7, the eccentric block 6 will return to a horizontal position. At this time, the mobile I-type frame 9 descends, and the bottom end of the I-type material loading frame 2 will abut against the eccentric block 6, And limiting, repeating the above steps, when each I-type loading frame 2 moves upward, it will push the I-type loading frame 2 above it to move upward, so as to continuously stack the I-type loading frames 2 into the material rack frame 1. Since multiple aluminum alloy wheel hubs 4 are placed in each I-type loading frame 2, their weight is relatively heavy. In this way, the I-type loading frames 2 are stacked one after another from bottom to top, which optimizes the placement operation and avoids the problem of greater impact force when the new I-type loading frame 2 is placed on the top of the stack due to its heavy weight when stacking the I-type loading frames 2 from top to bottom.

[0031] More specifically, the limiting assembly further comprises a limiting block 8 , which is fixedly mounted on the eccentric block 6 , and the limiting block 8 abuts against two sides of the bottom end of the I-type loading frame 2 .

[0032] In a specific embodiment, when the bottom end of the I-type loading frame 2 abuts against the eccentric block 6, the limit block 8 will also abut against the side of the bottom end of the I-type loading frame 2 to prevent the I-type loading frame 2 from sliding left and right on the eccentric block 6, thereby maintaining the stability of the I-type loading frame 2.

[0033] Meanwhile, it should be noted that a discharge notch 3 is provided on the rack frame 1 , and the discharge notch 3 is flush with the eccentric block 6 with the highest horizontal height in the rack frame 1 .

[0034] In a specific embodiment, by setting a discharge notch 3, the stacked I-type loading frames 2 can be taken out from the discharge notch 3 in sequence, and the I-type loading frames 2 can be slid out from the discharge notch 3 by simply pulling them, thus avoiding the problem of needing to lift the I-type loading frames 2 to take them out.

[0035] More specifically, the movable tool frame 9 and each tool loading frame 2 are provided with a plurality of through holes.

[0036] In a specific embodiment, through holes are provided on the movable workpiece frame 9 and the workpiece loading frame 2 so that water can flow through the through holes when entering the cooling pool, thereby realizing the exchange of water in different areas. The vibration of the workpiece loading frame 2 can also enhance the disruptive effect on the water flow, further dispersing impurities generated during quenching and preventing them from forming a covering film.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A heat treatment device for aluminum alloy wheel hub that effectively improves the yield rate, characterized by: The material rack frame (1) comprises a material rack frame (1), the top of which is connected to a lifting drive member, both sides of the material rack frame (1) are slidably connected to connecting plates (10), the tops of the two connecting plates (10) are connected to a synchronous cylinder, a mobile work-type frame (9) is slidably connected inside the material rack frame (1), both sides of the bottom of the mobile work-type frame (9) are respectively connected to the bottoms of the two connecting plates (10), a plurality of work-type material loading frames (2) are slidably connected inside the material rack frame (1), the plurality of work-type material loading frames (2) are sequentially stacked on the mobile work-type frame (9), and each work-type material loading frame (2) is provided with a plurality of aluminum alloy wheel hubs (4).

2. The aluminum alloy wheel hub heat treatment device for effectively improving the yield rate according to claim 1 is characterized in that: A plurality of limit assemblies are arranged in the material rack frame (1), and the limit assemblies include a round rod (5), an eccentric block (6) and a limit rod (7). The round rod (5) and the limit rod (7) are both fixedly mounted in the material rack frame (1), and the eccentric block (6) is rotatably mounted on the round rod (5). One end of the eccentric block (6) abuts against the bottom of the I-type material loading frame (2), and the other end of the eccentric block (6) abuts against the limit rod (7).

3. The aluminum alloy wheel hub heat treatment device for effectively improving the yield rate according to claim 2 is characterized in that: The limit assembly further comprises a limit block (8), the limit block (8) being fixedly mounted on the eccentric block (6), and the limit block (8) being in contact with two sides of the bottom end of the I-type loading frame (2).

4. The aluminum alloy wheel hub heat treatment device for effectively improving the yield rate according to claim 1 is characterized in that: The material rack frame (1) is provided with a material discharge notch (3), and the level of the material discharge notch (3) is flush with the eccentric block (6) with the highest level located in the material rack frame (1).

5. The aluminum alloy wheel hub heat treatment device for effectively improving the yield rate according to claim 1, characterized in that: The movable tool frame (9) and each tool loading frame (2) are provided with a plurality of through holes.

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