Double-row tapered roller bearing outer ring quenching press mold demolding mechanism

Abstract

The utility model provides a double-row tapered roller bearing outer ring quenching press mold demolding mechanism which comprises an upper mold and a lower mold which are matched with each other, the lower mold is arranged on a bottom plate through a pressing ring, the demolding mechanism further comprises a pressing plate and a plurality of demolding hooks which are arranged in an upward bending mode, and the pressing plate can be in sliding fit with an inner ring of the lower mold. The bottom plate is provided with half-moon grooves matched with the demolding hooks, the multiple half-moon grooves are evenly distributed around the axis of the pressing ring in the circumferential direction, one end of each demolding hook abuts against the lower end face of the pressing plate, and the other end of each demolding hook penetrates through the corresponding half-moon groove to be arranged on the outer side of the lower mold. According to the double-row tapered roller bearing outer ring quenching press mold demolding mechanism, an original disc spring demolding mode is replaced, demolding of parts is achieved through the demolding hook, and the machining quality of the parts is guaranteed.

Description

A demolding mechanism for a double-row tapered roller bearing outer ring quenching press mold Technical Field

[0001] This utility model relates to the field of bearing manufacturing mold technology, and in particular to a demolding mechanism for a double-row tapered roller bearing outer ring quenching press mold. Background Technology

[0002] Currently, heat treatment of large batches of bearing parts generally uses a special die-pressing quenching machine. During the cooling process of the quenched parts in the press, using a suitable quenching die can effectively prevent the parts from shrinking, reduce deformation, and ensure the heat treatment quality and dimensional stability of the workpiece.

[0003] In the actual use of a double-row tapered roller bearing die-hardening press, the bearing workpiece needs to be demolded and separated from the die after quenching. Because the existing lower die is supported by a disc spring, the die is in a floating state during the quenching process. However, as the spring gradually fails, the dimensional dispersion of the quenched parts increases. If the disc spring is directly removed to prevent the die from floating, demolding will be impossible. Summary of the Invention

[0004] The purpose of this utility model is to provide a demolding mechanism for the outer ring quenching press mold of a double-row tapered roller bearing, which solves the problem of unstable workpiece dimensions due to the decrease in the elasticity of the disc spring during the press quenching process.

[0005] This utility model provides a demolding mechanism for a double-row tapered roller bearing outer ring quenching press mold, including an upper mold and a lower mold that cooperate with each other. The lower mold is mounted on a base plate via a pressure ring. It also includes a pressure plate and a plurality of upwardly curved demolding hooks. The pressure plate can slide with the inner ring of the lower mold. The base plate is provided with a crescent groove that cooperates with the demolding hook. The plurality of crescent grooves are evenly distributed circumferentially around the axis of the pressure ring. One end of the demolding hook abuts against the lower end face of the pressure plate, and the other end of the demolding hook passes through the crescent groove and is disposed on the outside of the lower mold.

[0006] According to the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold provided by this utility model, the demolding hook includes an arc-shaped hook body and a first sphere and a second sphere respectively disposed at both ends of the arc-shaped hook body. The arc-shaped hook body is disposed in the crescent groove, wherein the first sphere extends into the center hole of the pressure ring and abuts against the lower end face of the pressure plate, and the second sphere is disposed on the outside of the lower mold.

[0007] According to the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold provided by this utility model, a limiting groove for limiting the second sphere is provided on the outer peripheral surface of the lower mold, and the second sphere can slide up and down along the limiting groove.

[0008] According to the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold provided by this utility model, the pressure ring includes a pressure ring ring and a pressure ring limiting step disposed on the outer circumferential surface of the upper end of the pressure ring ring. The pressure ring is connected and fixed to the base plate by connecting screws.

[0009] According to the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold provided by this utility model, the inner ring of the lower mold is sleeved outside the pressure ring, a lower mold limiting step is provided at the lower end of the inner ring of the lower mold, and the pressure ring limiting step is located directly above the lower mold limiting step.

[0010] According to the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold provided by this utility model, the pressure plate includes a circular plate, a limiting body disposed at the upper end of the circular plate, a lower pressing body disposed at the lower end of the circular plate, and through holes respectively penetrating the limiting body, the circular plate, and the lower pressing body. The lower pressing body extends into the center hole of the pressure ring and abuts against one end of the demolding hook. The outer ring of the circular plate can slide with the inner ring of the lower mold.

[0011] The demolding mechanism for the outer ring quenching press mold of the double-row tapered roller bearing provided by this utility model further includes a pressure plate pressing mechanism. The pressure plate pressing mechanism includes a demolding frame, a demolding cylinder, and a pressing cylinder. The demolding cylinder is driven and connected to the demolding frame. The upper end of the pressing cylinder is connected and fixed to the demolding frame. The pressing cylinder is disposed in the inner ring of the upper mold and is disposed above the pressure plate and can provide pressing force to the pressure plate.

[0012] According to the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold provided by this utility model, a positioning post is fixedly provided on the lower end face of the pressing cylinder, and the positioning post extends into the through hole and slides with the through hole.

[0013] According to the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold provided by this utility model, an upper demolding liner is also connected to the lower end of the outer ring of the demolding frame. A through groove is provided at the upper end of the outer ring of the upper mold for limiting the upper demolding liner. The upper demolding liner can slide up and down along the through groove.

[0014] The demolding mechanism for the outer ring quenching press mold of the double-row tapered roller bearing provided by this utility model further includes an upper mold driving mechanism. The upper mold driving mechanism includes an upper mold cylinder, an upper mold frame, and a connecting frame. The upper mold cylinder is driven to the upper mold frame. The upper mold frame and the connecting frame are bolted together. The connecting frame and the upper mold are screwed together.

[0015] This utility model provides a demolding mechanism for a double-row tapered roller bearing outer ring quenching press mold. It features multiple upwardly curved demolding hooks and semi-circular grooves on the base plate that mate with the hooks. These grooves are evenly distributed circumferentially around the axis of the pressure ring. The first end of each hook abuts against the lower end face of the pressure plate, while the second end passes through the semi-circular groove and is positioned on the outside of the lower mold. When the part is fitted onto the outer ring of the upper and lower molds, the lower end face of the part abuts against the second end of the hook, lifting the first end upwards and providing support to the pressure plate. To demold, downward pressure is applied to the pressure plate, pressing down on the first end of the hook and causing the second end to tilt upwards, thus lifting the lower end face of the part and achieving demolding. Therefore, the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold of this utility model, because it uses a demolding hook instead of the original disc spring for demolding, will not have the problem of dimensional instability caused by the decrease of disc spring elasticity during the press quenching process. The structure is reasonable, the demolding operation is convenient, and it can ensure the processing quality of the parts. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 is a schematic diagram of the demolding mechanism of the outer ring quenching press mold for the double-row tapered roller bearing of this utility model;

[0018] Figure 2 is a schematic diagram of the demolding hook in the demolding mechanism of the outer ring quenching press mold of the double-row tapered roller bearing of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Upper mold; 2. Lower mold; 201. Lower mold limiting step; 3. Pressure ring; 301. Pressure ring ring; 302. Pressure ring limiting step; 4. Base plate; 401. Crescent groove; 5. Pressure plate; 501. Circular plate; 502. Limiting body; 503. Lower pressing body; 6. Demolding hook; 601. Arc-shaped hook body; 602. First sphere; 603. Second sphere; 7. Demolding frame; 8. Demolding cylinder; 9. Lower pressing cylinder; 901. Positioning post; 10. Upper demolding liner; 11. Upper mold cylinder; 12. Upper mold frame; 13. Connecting frame. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] As shown in Figures 1 and 2, the demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold of this utility model includes an upper mold 1 and a lower mold 2 that cooperate with each other. The lower mold 2 is mounted on a base plate 4 through a pressure ring 3. It also includes a pressure plate 5 and a plurality of upwardly curved demolding hooks 6. The pressure plate 5 can slide with the inner ring of the lower mold 2. The base plate 4 is provided with a crescent groove 401 that cooperates with the demolding hooks 6. The plurality of crescent grooves 401 are evenly distributed circumferentially around the axis of the pressure ring 3. The first end of the demolding hook 6 abuts against the lower end face of the pressure plate 5, and the second end of the demolding hook 6 passes through the crescent groove 401 and is disposed on the outside of the lower mold 2.

[0025] When the part is placed on the outer ring of the upper mold 1 and the lower mold 2, the lower end face of the part abuts against the second end of the demolding hook 6, which pushes the first end of the demolding hook 6 upward, and the first end of the demolding hook 6 then supports the pressure plate 5.

[0026] When demolding is required, simply apply downward pressure to the pressure plate 5. The pressure plate 5 presses down on the first end of the demolding hook 6, causing the second end of the demolding hook 6 to tilt upward, thereby lifting the lower end of the part and achieving the demolding operation.

[0027] It should be noted that although only one demolding hook 6 is shown in Figure 1, multiple demolding hooks 6 are provided in the actual demolding mechanism of the double-row tapered roller bearing outer ring quenching press mold. In a preferred embodiment, four demolding hooks 6 can be provided evenly arranged circumferentially to ensure that the part is subjected to more uniform force during demolding and that the demolding process is stable and reliable.

[0028] The demolding mechanism for the double-row tapered roller bearing outer ring quenching press mold of this utility model uses a demolding hook 6 instead of the original disc spring for demolding, thus avoiding the dimensional instability problem caused by the decrease in disc spring force during the press quenching process. Therefore, the demolding mechanism for the double-row tapered roller bearing outer ring quenching press mold of this utility model has a reasonable structure, convenient demolding operation, and can ensure the processing quality of the parts.

[0029] Specifically, the demolding hook 6 includes an arc-shaped hook body 601 and a first sphere 602 and a second sphere 603 respectively disposed at both ends of the arc-shaped hook body 601. The arc-shaped hook body 601 is disposed in the crescent groove 401, wherein the first sphere 602 extends into the center hole of the pressure ring 3 and abuts against the lower end face of the pressure plate 5, and the second sphere 603 is disposed on the outer side of the lower mold 2.

[0030] The lower mold 2 has a limiting groove on its outer circumferential surface. The limiting groove can limit the second sphere 603 so that the second sphere 603 can slide up and down along the limiting groove.

[0031] Specifically, the pressure ring 3 includes a pressure ring ring 301 and a pressure ring limiting step 302 disposed on the outer circumferential surface of the upper end of the pressure ring ring 301. The pressure ring 3 is connected and fixed to the base plate 4 by connecting screws.

[0032] The lower die 2 has its inner ring fitted outside the pressure ring 3. A lower die limiting step 201 is located at the lower end of the inner ring of the lower die 2, and a pressure ring limiting step 302 is positioned directly above the lower die limiting step 201. That is, the pressure ring 3 limits the radial direction of the lower die 2, and the pressure ring limiting step 302 and the lower die limiting step 201 limit the axial direction of the lower die 2, allowing the lower die 2 a certain vertical floating space. However, the lower die 2 cannot be dislodged upwards from the pressure ring limiting step 302.

[0033] Specifically, the pressure plate 5 includes a circular plate 501, a limiting body 502 disposed at the upper end of the circular plate 501, a lower pressing body 503 disposed at the lower end of the circular plate 501, and through holes penetrating the limiting body 502, the circular plate 501, and the lower pressing body 503 respectively. The lower pressing body 503 extends into the center hole of the pressure ring 3 and abuts against the first ball 602 of the demolding hook 6. The outer ring of the circular plate 501 can slide and engage with the inner ring of the lower mold 2. That is, the pressure plate 5 can center with the inner ring of the lower mold 2.

[0034] The demolding mechanism for the double-row tapered roller bearing outer ring quenching press mold in this embodiment also includes a pressure plate pressing mechanism. The pressure plate pressing mechanism includes a demolding frame 7, a demolding cylinder 8, and a pressing cylinder 9. The demolding cylinder 8 is drivenly connected to the demolding frame 7. The upper end of the pressing cylinder 9 is fixedly connected to the demolding frame 7. The pressing cylinder 9 is located on the inner ring of the upper mold 1 and is positioned above the pressure plate 5, providing pressing force to the pressure plate 5. A positioning post 901 is fixedly provided on the lower end face of the pressing cylinder 9. The positioning post 901 extends into the through hole of the pressure plate 5 and slides within the through hole. That is, by providing the positioning post 901, the pressing cylinder 9 and the pressure plate 5 can be aligned and positioned. During the part processing, the pressure plate pressing mechanism does not provide downward pressure to the pressure plate 5; at this time, the lower end face of the pressing cylinder 9 is spaced apart from the upper end face of the pressure plate 5. When demolding is required, the demolding cylinder 8 drives the demolding frame 7 and the pressing cylinder 9 to move downward, so that the lower end face of the pressing cylinder 9 contacts the upper end face of the pressure plate 5 and continues to press down. Then, the pressure plate 5 applies downward pressure to the first end of the demolding hook 6, so that the lower end face of the part is lifted by the second end of the demolding hook 6 to achieve demolding.

[0035] Among them, an upper demolding liner 10 is connected to the lower end of the outer ring of the demolding frame 7. A through groove is provided at the upper end of the outer ring of the upper mold 1 to limit the upper demolding liner 10. The upper demolding liner 10 can slide up and down along the through groove so that the up and down movement of the demolding frame 7 will not affect the upper mold 1.

[0036] The demolding mechanism for the outer ring quenching press mold of the double-row tapered roller bearing in this embodiment also includes an upper mold driving mechanism. This upper mold driving mechanism includes an upper mold cylinder 11, an upper mold frame 12, and a connecting frame 13. The upper mold cylinder 11 is drivenly connected to the upper mold frame 12, the upper mold frame 12 is bolted to the connecting frame 13, and the connecting frame 13 is screwed to the upper mold 1. That is, the upper mold cylinder 11 can drive the upper mold frame 12 and the connecting frame 13 to move up and down, thereby driving the upper mold 1 to move up and down.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A demolding mechanism for a quenching press mold of a double-row tapered roller bearing outer ring, comprising an upper mold and a lower mold that cooperate with each other, wherein the lower mold is mounted on a base plate via a pressure ring, characterized in that, It also includes a pressure plate and multiple upwardly curved demolding hooks. The pressure plate can slide with the inner ring of the lower mold. The base plate is provided with a crescent groove that cooperates with the demolding hook. The multiple crescent grooves are evenly distributed circumferentially around the axis of the pressure ring. One end of the demolding hook abuts against the lower end face of the pressure plate, and the other end of the demolding hook passes through the crescent groove and is located on the outside of the lower mold.

2. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 1, characterized in that, The demolding hook includes an arc-shaped hook body and a first sphere and a second sphere respectively disposed at both ends of the arc-shaped hook body. The arc-shaped hook body is disposed in the crescent groove, wherein the first sphere extends into the center hole of the pressure ring and abuts against the lower end face of the pressure plate, and the second sphere is disposed on the outside of the lower mold.

3. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 2, characterized in that, A limiting groove is provided on the outer peripheral surface of the lower mold to limit the second sphere, and the second sphere can slide up and down along the limiting groove.

4. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 1, characterized in that, The pressure ring includes a pressure ring ring and a pressure ring limiting step disposed on the outer circumferential surface of the upper end of the pressure ring ring. The pressure ring is connected and fixed to the base plate by connecting screws.

5. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 4, characterized in that, The inner ring of the lower die is fitted outside the pressure ring. A lower die limiting step is provided at the lower end of the inner ring of the lower die, and the pressure ring limiting step is located directly above the lower die limiting step.

6. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 1, characterized in that, The pressure plate includes a circular plate, a limiting body disposed at the upper end of the circular plate, a lower pressing body disposed at the lower end of the circular plate, and through holes passing through the limiting body, the circular plate, and the lower pressing body respectively. The lower pressing body extends into the center hole of the pressure ring and abuts against one end of the demolding hook. The outer ring of the circular plate can slide with the inner ring of the lower mold.

7. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 6, characterized in that, It also includes a pressure plate pressing mechanism, which includes a demolding frame, a demolding cylinder, and a pressing cylinder. The demolding cylinder is driven and connected to the demolding frame. The upper end of the pressing cylinder is connected and fixed to the demolding frame. The pressing cylinder is located in the inner ring of the upper mold and is located above the pressure plate, providing pressing force to the pressure plate.

8. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 7, characterized in that, A positioning post is fixedly provided on the lower end face of the pressing cylinder, and the positioning post extends into the through hole and slides with the through hole.

9. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 7, characterized in that, An upper demolding liner is also connected to the lower end of the outer ring of the demolding frame. A through groove is provided at the upper end of the outer ring of the upper mold to limit the upper demolding liner. The upper demolding liner can slide up and down along the through groove.

10. The demolding mechanism for the quenching press mold of the outer ring of a double-row tapered roller bearing according to claim 1, characterized in that, It also includes an upper mold drive mechanism, which includes an upper mold cylinder, an upper mold frame, and a connecting frame. The upper mold cylinder is driven to the upper mold frame, the upper mold frame is bolted to the connecting frame, and the connecting frame is screwed to the upper mold.

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