Guide frame rocking seat insert die

Abstract

The utility model provides a guide frame shaking seat insert die. The guide frame shaking seat insert die comprises a lower die seat and an upper die seat. A lower insert mold is detachably and fixedly connected to the lower mold base, a hydraulic ejection mechanism is assembled on the lower mold base, and an ejection rod set vertically matched with the ejection mechanism is assembled on the lower insert mold in a sliding mode. An upper insert mold is detachably and fixedly connected to the upper mold base, an insert fixing plate is fixedly assembled on the top of the upper insert mold, and a small insert mold is detachably and fixedly connected to the insert fixing plate. According to the die, the upper die base and the lower die base which are unified in standard are adopted, upper insert dies and lower insert dies of various types can be matched, meanwhile, the small insert dies are replaced for areas where die cavities are greatly abraded or cracks are prone to occurring, the die manufacturing cost is greatly reduced, and machining of various forge pieces can be rapidly dealt with.

Description

Technical Field

[0001] This application relates to the field of railway freight car bogie technology, and in particular to a guide frame rocker seat insert mold. Background Technology

[0002] The guide frame rocker is a key component of the railway freight car bogie. The rocker of the guide frame rocker solves the stability of the railway freight car during the turning process by swinging the guide frame rocker, so as to adapt to complex railway lines and turning radii.

[0003] However, the guide frame rocker seat is made of alloy steel, which has good forgeability, but the forging is large in weight, has a large forming area, and is very thin with severe uneven thickness, resulting in significant cross-sectional variations. It also features four spring support platforms with protrusions of nearly 30mm each, and a trunnion arc area extending nearly 100mm from the center of each end. Currently, the forging difficulties are: 1. Due to the large forming area and the thin and severely uneven thickness, the distribution of the billet metal is highly demanding, as are the fluidity and directionality of the metal during forging. Slight errors can lead to incomplete filling in certain areas. 2. The four protrusions form spring support platforms approximately 30mm high. Because these platforms have a small diameter and a large height, the resistance to metal flow towards the height of the spring support platforms is greatest during forging, preventing the metal from flowing upwards. Forging can only be achieved by squeezing. The pressure causes some metal to flow towards the height of the spring bearing, making it difficult to fill the top of the spring bearing in forging. Secondly, because there is a nearly 100mm protruding trunnion arc area at each end, the billet must ensure sufficient metal for the trunnion forging process, but not too much metal. Otherwise, excess metal will have nowhere to flow, resulting in incomplete forging and an overly thick product. Other parts may not be fully filled due to insufficient metal. Therefore, whether the protruding trunnion arc areas at both ends can be fully filled or properly forged is another challenge in forging. In existing technology, a two-stage heating forming method is generally used: after the first heating, the billet is freely forged on a 2-ton forging machine, and after the second heating, it is finally forged on an 8000-ton friction press. Because a free-forging billet is used, the billet size is difficult to control, and each billet has a different size. This leads to defects such as folding and incomplete filling in some products after final forging on the 8000-ton friction press, resulting in a high scrap rate. Research revealed that folding and missing material defects were mainly concentrated on the end faces of the trunnions at both ends. The reason was that excessive metal was distributed in the trunnion arc area of ​​the billet. During forging, the excess metal in this area had nowhere to flow, causing poor forging and resulting in a severely excessive thickness at the trunnion. Meanwhile, the arc area at the shaft end was not fully filled in the length direction due to insufficient metal flow, easily leading to overlapping and folding during metal flow. This resulted in incomplete filling around the product and on the top surface of the spring support, causing missing material defects. Furthermore, forging different models of guide frame rocker seats required the preparation of multiple types of molds, leading to high mold costs. Additionally, the mold cavities of easily damaged, high-stress areas experienced wear or cracking over time, resulting in substandard guide frame rocker seat forgings that required replacement of the entire mold, drastically increasing manufacturing costs. Utility Model Content

[0004] This application provides a guide frame rocker seat insert mold, which adopts a unified mold base and matches various types of insert molds. At the same time, it allows for the replacement of small insert molds for easily worn areas with high stress, thereby reducing mold costs.

[0005] The guide frame rocker seat insert mold provided in this application includes: a lower mold base and an upper mold base; wherein...

[0006] A lower insert mold is detachably fixedly connected to the lower mold base, a hydraulic ejection mechanism is mounted on the lower mold base, and an ejection rod assembly that is slidably mounted on the lower insert mold and is perpendicular to the ejection mechanism.

[0007] An upper insert mold is detachably fixedly connected to the upper mold base. An insert fixing plate is fixedly mounted on the top of the upper insert mold. A small insert mold is detachably fixedly connected to the insert fixing plate.

[0008] In this application, by adopting a unified standard upper and lower die base, various models of upper and lower insert dies can be matched. At the same time, small insert dies can be replaced for areas with large wear or prone to cracking of the die cavity, which greatly reduces the die manufacturing cost and can quickly handle the processing of various forgings.

[0009] In one specific implementation scheme, the lower mold base is provided with a first trapezoidal mounting groove that mates with the lower insert mold, and a lower mold pad is fixedly installed inside the first trapezoidal mounting groove. This results in a higher overall fit and installation precision.

[0010] In one specific implementation, a first pressure plate for pressing and fixing the lower insert mold is provided on one side of the first trapezoidal mounting groove. This makes installation and fixing more convenient.

[0011] In one specific implementation, the first pressure plate has a wedge-shaped structure, and the first pressure plate is connected to the lower mold base via a first bolt assembly. The overall disassembly and replacement method is simple.

[0012] In one specific implementation, the ejector rod assembly includes: a support plate disposed at the bottom of the lower insert mold, and an ejector rod connected to the support plate; wherein...

[0013] The pallet slides in cooperation with the hydraulic ejection mechanism;

[0014] The ejector rod can penetrate through the top of the lower insert mold, facilitating demolding.

[0015] In one specific implementation scheme, the upper mold base is provided with a second trapezoidal mounting groove that mates with the upper insert mold, and an upper mold pad is fixedly installed inside the second trapezoidal mounting groove. This results in a higher overall fit and installation precision.

[0016] In one specific implementation, a second pressure plate is provided on one side of the second trapezoidal mounting groove for pressing and fixing the upper insert mold. This makes installation and fixing more convenient.

[0017] In one specific implementation, the second pressure plate has a wedge-shaped structure, and the second pressure plate is connected to the upper mold base via a second bolt assembly. The overall disassembly and replacement method is simple.

[0018] In one specific implementation, the upper insert mold has an installation groove that matches the smaller insert mold, resulting in a higher overall fit and installation accuracy.

[0019] In one specific implementation, the small insert mold is connected to the insert fixing plate by bolt fasteners. This makes disassembly and replacement more convenient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the lower mold base provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the upper mold base provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the lower insert mold and the upper insert mold provided in the embodiments of this application.

[0023] Icon labels:

[0024] Lower mold base-100, lower mold pad-110, first pressure plate-120, hydraulic ejection mechanism-130;

[0025] Upper mold base -200, upper mold pad -210, second pressure plate -220;

[0026] Lower insert mold-300, support plate-310, ejector rod-320;

[0027] Upper insert mold-400, insert fixing plate-410, small insert mold-420, bolt fastener-430. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0029] It should be noted that, unless otherwise defined, the technical or scientific terms used in one or more embodiments of this specification should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar words used in one or more embodiments of this specification do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] To facilitate understanding of the guide frame rocker seat insert mold provided in this application embodiment, its application scenario is first explained. The guide frame rocker seat is a key component of a railway freight car bogie, and its swinging motion ensures stability during the turning process of the freight car. It adapts to complex railway lines and turning radii. However, forging different models of guide frame rocker seats requires the preparation of multiple mold models, resulting in high mold costs. Furthermore, for easily damaged parts of the mold subjected to high stress, wear or cracking of the mold cavity after prolonged use leads to substandard finished guide frame rocker seat forgings, necessitating replacement of the entire mold and drastically increasing manufacturing costs. The inventors have researched and improved this process, specifically by using a contour cutting method to remove excess metal from the trunnions at both ends of the billet after free forging. During free forging, the thickness of the billet is strictly controlled to ensure that the four spring supports are fully filled. Based on this, this application provides a guide frame rocker seat insert mold that uses a unified mold base and matches multiple models of insert molds. Smaller insert molds are used to replace those in easily worn areas subjected to high stress, reducing mold costs.

[0031] refer to Figure 1 and Figure 2 As shown in the figure, the guide frame rocker seat insert mold provided in this application embodiment includes: a lower mold base 100 and an upper mold base 200; wherein, the upper mold base 200 and the lower mold base 100 in this application adopt the same size, and the upper mold base 200 and the lower mold base 100 are made of ordinary steel, which reduces the material cost of mold base manufacturing, and various models of upper mold inserts and lower mold inserts can be matched through the upper mold base 200 and the lower mold base 100, which has high flexibility and reduces the overall mold development and manufacturing cost.

[0032] Specifically, the lower mold base 100 has a first trapezoidal mounting groove that mates with the lower insert mold 300, and a lower mold pad 110 is fixedly installed inside the first trapezoidal mounting groove. This results in a higher overall fit and installation tightness. A first pressure plate 120 for pressing and fixing the lower insert mold 300 is provided on one side of the first trapezoidal mounting groove. This makes installation and fixing more convenient. The first pressure plate 120 has a wedge-shaped structure and is connected to the lower mold base 100 via a first bolt assembly. This simplifies the overall disassembly and replacement process. Therefore, this application utilizes the first trapezoidal mounting groove on the lower mold base 100 to ensure a tight fit with the lower mold insert, resulting in higher overall stability. Simultaneously, the first pressure plate 120 fixes the lower mold insert to the lower mold base 100, making disassembly and assembly more convenient.

[0033] The upper mold base 200 has a second trapezoidal mounting groove that mates with the upper insert mold 400. An upper mold pad 210 is fixedly installed inside the second trapezoidal mounting groove. This results in a higher overall fit and installation tightness. A second pressure plate 220 is provided on one side of the second trapezoidal mounting groove for pressing and fixing the upper insert mold 400. This makes installation and fixing more convenient. The second pressure plate 220 has a wedge-shaped structure and is connected to the upper mold base 200 via a second bolt assembly. This simplifies the overall disassembly and replacement process. Therefore, this application utilizes the second trapezoidal mounting groove on the upper mold base 200 to ensure a tight fit with the upper mold insert, resulting in higher overall stability. Simultaneously, the second pressure plate 220 fixes the lower mold insert to the upper mold base 200, making disassembly and assembly more convenient.

[0034] Combination Figure 3 As shown, a lower insert mold 300 is detachably fixedly connected to the lower mold base 100. A hydraulic ejection mechanism 130 is mounted on the lower mold base 100. An ejection rod assembly that slidably cooperates with the ejection mechanism is mounted on the lower insert mold 300. The lower insert mold 300 is detachably connected to the lower mold base 100 via a first pressure plate 120. The lower insert mold 300 is made of mold steel, possessing high strength and being less prone to damage. The ejection rod assembly in this application includes: a support plate 310 disposed at the bottom of the lower insert mold 300, and an ejector rod 320 connected to the support plate 310. The support plate 310 slides in cooperation with the hydraulic ejection mechanism. The ejector rod 320 can penetrate the top of the lower insert mold 300, facilitating demolding. The support plate 310 has a certain vertical lifting range within the lower mold insert, and facilitates demolding when the hydraulic ejection mechanism 130 rises.

[0035] An upper insert mold 400 is detachably and fixedly connected to the upper mold base 200. An insert fixing plate 410 is fixedly mounted on the top of the upper insert mold 400, and a small insert mold 420 is detachably and fixedly connected to the insert fixing plate 410. The upper insert mold 400 has an installation groove that matches the small insert mold 420, resulting in a higher overall fit. The small insert mold 420 can be replaced in areas of the mold cavity with significant wear or prone to cracking, greatly reducing mold costs. Furthermore, the small insert mold 420 is connected to the insert fixing plate 410 by bolts and fasteners 430, making disassembly and replacement more convenient.

[0036] In this application, by adopting a unified standard upper mold base 200 and lower mold base 100, various models of upper insert molds 400 and lower insert molds 300 can be matched. At the same time, small insert molds 420 can be replaced for areas with large wear of the mold cavity or those prone to cracking, which greatly reduces the mold manufacturing cost and can quickly handle the processing of various forgings.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this specification, which are not provided in detail for the sake of brevity.

[0038] Additionally, to simplify the description and discussion, and to avoid obscuring one or more embodiments of this specification, well-known power / ground connections for other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be illustrated in block diagram form to avoid obscuring one or more embodiments of this specification, and this also takes into account the fact that the details of implementation of these block diagram apparatuses are highly dependent on the platform on which one or more embodiments of this specification will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details have been set forth to describe exemplary embodiments of this disclosure, it will be apparent to those skilled in the art that one or more embodiments of this specification may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0039] One or more embodiments of this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments of this specification should be included within the scope of protection of this disclosure.

Claims

1. A guide frame rocker seat insert mold, characterized in that, Include: Lower die seat and upper die seat; wherein, The lower die seat is detachably fixedly connected with the lower insert block mold, the lower die seat is equipped with hydraulic ejection mechanism, the lower insert block mold is equipped with the ejection rod group that is perpendicular with the ejection mechanism cooperation on the sliding; The upper die seat is detachably fixedly connected with the upper insert block mold, the top of the upper insert block mold is fixedly equipped with insert block fixed plate, and the insert block fixed plate is detachably fixedly connected with small insert block mold; The lower die seat is equipped with the first trapezoidal installation groove that is matched with the lower insert block mold, and the inside of the first trapezoidal installation groove is fixedly installed with lower mold backing plate.

2. The guide frame rocking seat insert mold according to claim 1, wherein One side of the first trapezoidal installation groove is provided with the first pressing plate for pressing and fixing the lower insert block mold.

3. The guide frame rocking seat insert mold according to claim 2, wherein The first pressing plate is wedge-shaped structure, and the first pressing plate is connected with the lower die seat by first bolt assembly.

4. The guide frame rocking seat insert mold according to claim 3, wherein The ejection rod group includes: the supporting plate arranged at the bottom of the lower insert block mold, and the top rod connected with the supporting plate;Wherein, The supporting plate is matched with the hydraulic ejection mechanism and slides; The top rod can penetrate the top of the lower insert block mold.

5. The guide frame rocking seat insert mold of claim 1, wherein, The upper die seat is equipped with the second trapezoidal installation groove that is matched with the upper insert block mold, and the inside of the second trapezoidal installation groove is fixedly installed with upper mold backing plate.

6. The guide frame rocking seat insert mold of claim 5, wherein, One side of the second trapezoidal installation groove is provided with the second pressing plate for pressing and fixing the upper insert block mold.

7. The guide frame rocking block insert mold of claim 6, wherein, The second pressing plate is wedge-shaped structure, and the second pressing plate is connected with the upper die seat by second bolt assembly.

8. The guide frame rocking block insert mold of claim 7, wherein, The upper insert block mold is equipped with the installation groove that is matched with the small insert block mold.

9. The guide frame rocking seat insert mold of claim 1, wherein, The small insert block mold is connected on the insert block fixed plate by bolt fastener.

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