A bending device for railway fitting machining

Abstract

The utility model relates to railway fittings bending technical field, and disclose a kind of bending device for railway fittings processing, including workbench, the top of workbench is fixedly connected with mounting seat, mounting seat is fixedly connected with hydraulic cylinder, the inside slide connection of hydraulic cylinder has top rod, the right end of top rod is fixedly connected with connector, the inside of connector is detachably connected with stamping pedestal, the inside of stamping pedestal is fixedly connected with two fixed rods, the top of workbench is fixedly connected with mounting post, the outside of mounting post is detachably installed with bending bottom die, the top of workbench is provided with the guiding mechanism for the direction of stamping pedestal, bending bottom die includes mounting sleeve, the outside of mounting post is provided with mounting sleeve, the utility model is changed bending bottom die in time when needing to process different models or bending angle workpiece, to adapt to the need of processing.

Description

Technical Field

[0001] This utility model relates to the field of railway component bending technology, specifically a bending device for processing railway components. Background Technology

[0002] In the field of railway component processing, bending is a common and crucial step, as its quality directly affects the performance and safety of the railway components. Traditional railway component bending methods have several shortcomings. In bending, the bending die is a key component determining the shape and size of the bent component. Traditional bending dies are cumbersome to install, often using fixed or complex installation structures. This leads to significant time and manpower consumption when changing dies of different specifications to accommodate different shapes and sizes of railway components, impacting production efficiency. Furthermore, the stable operation of the stamping base during the stamping process is crucial for ensuring the bending accuracy of railway components. Traditional equipment often lacks a dedicated guiding mechanism, making the stamping base prone to misalignment and wobbling during operation. This results in large dimensional deviations, unstable quality, and a high defect rate in the processed railway components. This device is equipped with a guiding mechanism for guiding the stamping base, which can ensure that the stamping base moves accurately along a predetermined direction during the stamping process, effectively improving the bending accuracy and product quality of railway parts. Therefore, a bending device for processing railway parts is proposed to solve the above problems. Utility Model Content

[0003] (a) Technical problems to be solved The purpose of this utility model is to solve the problems of the cumbersome installation method of the bending bottom mold of traditional devices, which are mostly fixed installations or complex installation structures and lack guiding mechanisms. Therefore, a bending device for processing railway parts is proposed.

[0004] (II) Technical Solution The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A bending device for processing railway fittings includes a workbench, a mounting base fixedly connected to the top of the workbench, a hydraulic cylinder fixedly connected to the mounting base, a push rod slidably connected to the inner side of the hydraulic cylinder, a connector fixedly connected to the right end of the push rod, a stamping base detachably connected to the inner side of the connector, two fixing rods fixedly connected to the inner side of the stamping base, a mounting column fixedly connected to the top of the workbench, a bending bottom mold detachably mounted on the outer side of the mounting column, and a guide mechanism for guiding the stamping base at the top of the workbench.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Preferably, the bending bottom mold includes a mounting sleeve, the mounting sleeve is fitted on the outer side of the mounting column, the mounting sleeve has a through threaded hole, the inner side of the threaded hole is threaded with a mounting bolt, the outer side of the mounting bolt is threaded with a mounting nut, and the left end of the mounting sleeve is fixedly connected with a bending block, the bending block has a bending groove.

[0007] Preferably, the guiding mechanism includes guide rails, and two guide rails are fixedly connected to the top of the worktable. Sliders are slidably connected to the outer sides of the two guide rails, and the two sliders are detachably connected to the left end of the stamping base by two bolts.

[0008] Preferably, a connecting bolt is provided on the inner side of the connector, and a protrusion is fixedly connected to the left end of the stamping base. The protrusion is located on the inner side of the connector, the connecting bolt passes through the protrusion, and a connecting nut is threadedly connected to the outer side of the connecting bolt.

[0009] Preferably, the workbench is provided with four legs at the bottom, and each of the four legs is fixedly connected to a foot pad.

[0010] (III) Beneficial Effects Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. This utility model sets up an installation column and a bending bottom mold. The bending bottom mold is detachably installed on the outside of the installation column. When it is necessary to process workpieces of different models or bending angles, the bending bottom mold can be replaced in time to adapt to the processing needs.

[0011] 2. This utility model, by setting a guiding mechanism, ensures that the stamping base moves along a preset and precise trajectory, preventing any lateral deviation or torsion and guaranteeing the stability of the movement. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the relative positional relationship between the connector and the protrusion of this utility model; Figure 3 This is a schematic diagram of the bending bottom mold structure of this utility model; Figure 4 This is a schematic diagram of the guiding mechanism of this utility model.

[0013] In the diagram: 1. Workbench; 2. Mounting base; 3. Hydraulic cylinder; 4. Push rod; 5. Connector; 6. Stamping base; 7. Fixing rod; 8. Mounting column; 9. Bending bottom die; 91. Mounting sleeve; 92. Mounting bolt; 93. Mounting nut; 94. Bending block; 95. Bending groove; 10. Guide mechanism; 101. Guide rail; 102. Slider; 11. Connecting bolt; 12. Protrusion; 13. Connecting nut; 14. Foot pad. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] In the embodiments, by Figure 1-4 A bending device for processing railway fittings is provided, comprising a workbench 1, a mounting base 2 fixedly connected to the top of the workbench 1, a hydraulic cylinder 3 fixedly connected to the mounting base 2, a push rod 4 slidably connected to the inner side of the hydraulic cylinder 3, a connector 5 fixedly connected to the right end of the push rod 4, a stamping base 6 detachably connected to the inner side of the connector 5, two fixing rods 7 fixedly connected to the inner side of the stamping base 6, a mounting column 8 fixedly connected to the top of the workbench 1, a bending bottom mold 9 detachably mounted on the outer side of the mounting column 8, and a guide mechanism 10 for guiding the stamping base 6 at the top of the workbench 1.

[0016] Based on the above settings, according to the shape and bending angle of the railway components to be processed (such as fishplates, connecting plates, elastic clips, etc.), select a suitable bending bottom die 9 and install it on the mounting column 8, and select the corresponding upper die (installed on the stamping base 6). Place the metal billet to be bent (usually pre-cut and preheated steel parts) horizontally on the forming groove of the bending bottom die 9 and position it accurately. Start the hydraulic system, and the hydraulic cylinder 3 starts working, driving the push rod 4 to retract to the left, bringing the entire upper die to the ready position. The piston rod of the hydraulic cylinder 3 pushes the push rod 4, the connecting head 5, and the stamping base 6 (i.e., the entire upper die assembly) to the right. During this process, the guide mechanism 10 plays a key role, ensuring that the stamping base 6 moves along the preset, precise trajectory, preventing any lateral deviation or torsion, and ensuring the stability of the movement. The fixing rod 7, fixedly connected to the stamping base 6, moves to the right, contacting and pressing the workpiece. Under the action of huge hydraulic pressure, the workpiece is pressed tightly against the bending bottom die 9. Under the combined force, the workpiece undergoes plastic deformation, bending into the required shape and angle strictly according to the design of the bottom mold. Hydraulic cylinder 3 continuously applies pressure to maintain this pressure, ensuring the workpiece is fully formed and releasing some internal stress to reduce springback and ensure the accuracy of the bending angle. After bending, hydraulic cylinder 3 reverses direction, driving the ejector rod 4 to retract, causing the upper mold assembly to move upwards away from the workpiece and precisely return to its initial position along the guide mechanism 10. The operator or auxiliary equipment removes the bent railway component from the bending bottom mold 9, completing one work cycle.

[0017] Reference Figure 1-4The bending bottom mold 9 includes a mounting sleeve 91. The mounting sleeve 91 is fitted on the outer side of the mounting column 8. The mounting sleeve 91 has a threaded hole that is connected to the mounting column. The inner side of the threaded hole is threaded with a mounting bolt 92. The outer side of the mounting bolt 92 is threaded with a mounting nut 93. The left end of the mounting sleeve 91 is fixedly connected with a bending block 94. The bending block 94 has a bending groove 95. With the above structural design, the bending die 9 is installed as an independent module onto the mounting column 8 via the mounting sleeve 91. When processing workpieces of different models or bending angles, the operator does not need to disassemble the entire mounting column 8; simply loosening the mounting bolts 92 allows for the quick removal of the entire bending die 9 (including the bending block 94) and replacement with another pre-set bending die 9. This design significantly shortens production preparation time, meets the flexible production needs of multiple varieties and small batches in railway parts processing, and significantly improves equipment utilization and production efficiency. The double locking mechanism using the mounting bolts 92 and mounting nuts 93 generates a huge preload, firmly fixing the mounting sleeve 91 to the mounting column 8. When subjected to huge hydraulic bending impact forces, this structure effectively prevents any loosening, rotation, or displacement of the die. This is crucial for ensuring accurate bending and forming positions and consistent product dimensions each time, while also completely eliminating potential safety hazards caused by die loosening. The shape of the bending groove 95 (such as V-shape, U-shape, or a specific radius) determines the bending angle and shape of the workpiece. By equipping a series of bending blocks 94 with different specifications (such as different opening widths, different groove depths, and different radius angles), a single bending device can adapt to the processing of various railway fittings, from light to heavy fishplates. This design achieves expanded equipment functionality at minimal cost (only mold replacement), offering high versatility and reducing user equipment investment. The bending block 94 is the component that directly contacts the workpiece and bears wear. Designing the bending block 94 and mounting sleeve 91 as a fixed connection rather than an integral part means that when the bending groove 95 wears or is damaged due to long-term use, the bending block 94 can be replaced separately without scrapping the entire bottom mold module. This split design significantly reduces subsequent maintenance costs and spare parts expenses, demonstrating excellent economic efficiency.

[0018] Reference Figure 1-4 The guide mechanism 10 includes a guide rail 101. Two guide rails 101 are fixedly connected to the top of the worktable 1. Slider 102 is slidably connected to the outer side of each of the two guide rails 101. The two sliders 102 are detachably connected to the left end of the stamping base 6 by two bolts. With the above structural setup, in the stationary state of the equipment, the stamping base 6 is rigidly connected to two sliders 102 via the connecting bolt 11 at its left end. The two sliders 102 are nested on the left and right guide rails 101 respectively. The guide rails 101 are precisely fixedly mounted on the worktable 1, ensuring extremely high parallelism and perpendicularity. At this time, the weight of the entire upper die assembly (stamping base 6, fixing rod 7, etc.) is borne by the sliders 102, whose positions are precisely defined by the guide rails 101. The hydraulic cylinder 3 is activated, pushing the ejector rod 4 and the connector 5 to the right. Since the connector 5 is detachably connected to the stamping base 6, it directly transmits a huge thrust to the stamping base 6. This thrust may theoretically have a small non-perpendicular component; without the guide mechanism 10, it could cause the stamping base 6 to tilt, twist, or jam. The sliders 102, fixed to the stamping base 6, begin to slide along the precision track of the guide rails 101.

[0019] Reference Figure 1-4 The connector 5 has a connecting bolt 11 on its inner side, and a protrusion 12 is fixedly connected to the left end of the stamping base 6. The protrusion 12 is located inside the connector 5, the connecting bolt 11 passes through the protrusion 12, and the connecting nut 13 is threadedly connected to the outer side of the connecting bolt 11. With the above structural design, when it is necessary to replace the machined parts or when the mold is worn, the operator only needs to use a tool to loosen and remove the connecting nut 13 to pull out the connecting bolt 11, thereby quickly separating the stamping base 6 (and the entire upper die set on it) from the connector 5. The whole process is simple and quick, greatly reducing downtime for mold replacement, improving equipment utilization and production flexibility, and is very suitable for production scenarios that require frequent mold changes. The protrusion 12 is precisely inserted into the inner side of the connector 5, and this structure itself plays a role in initial positioning and self-centering. Before tightening the bolt, it has already initially ensured the circumferential and radial relative positions of the stamping base 6 and the connector 5, preventing misalignment during installation. This ensures that after each installation, the center line of the upper die can be kept consistent with the thrust center line of the hydraulic cylinder 3, providing a basic guarantee for subsequent precise bending. This connection method is a rigid connection. Once the connecting bolt 11 is tightened by the connecting nut 13, the two side planes of the protrusion 12 will fit tightly against the inner wall of the connector 5, generating huge friction. This structure reliably transmits the enormous thrust and impact force of the hydraulic cylinder 3, effectively resisting lateral forces and torsional moments during bending, preventing the upper die from loosening or wobbling in any direction, and ensuring processing stability and safety. The connecting bolts 11 and nut 13 are standard parts, easy to procure and replace, and extremely low in cost. If wear occurs at the connection points after long-term use, only the simplest parts (such as the protrusion 12 or connector 5) need to be replaced, or even just the connecting bolts 11 and nut 13, to restore accuracy, without needing to replace the entire ejector pin 4 or large, expensive components such as the stamping base 6, resulting in extremely low maintenance costs.

[0020] Reference Figure 1-4 The workbench 1 has four legs at its bottom, and each of the four legs is fixedly connected to a foot pad 14. With the above-mentioned structural design, the foot pad 14 is usually made of elastic materials such as rubber and polyurethane, which can effectively absorb and isolate vibration.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending device for processing railway fittings, characterized in that, The workbench (1) is fixedly connected to a mounting base (2) at its top. A hydraulic cylinder (3) is fixedly connected to the mounting base (2). A push rod (4) is slidably connected to the inner side of the hydraulic cylinder (3). A connector (5) is fixedly connected to the right end of the push rod (4). A stamping base (6) is detachably connected to the inner side of the connector (5). Two fixing rods (7) are fixedly connected to the inner side of the stamping base (6). A mounting column (8) is fixedly connected to the top of the workbench (1). A bending bottom mold (9) is detachably installed on the outer side of the mounting column (8). A guide mechanism (10) for guiding the stamping base (6) is provided at the top of the workbench (1).

2. A bending device for processing railway fittings according to claim 1, characterized in that: The bending bottom mold (9) includes a mounting sleeve (91). The mounting sleeve (91) is fitted on the outer side of the mounting column (8). A threaded hole is provided on the mounting sleeve (91). A mounting bolt (92) is threaded on the inner side of the threaded hole. A mounting nut (93) is threaded on the outer side of the mounting bolt (92). A bending block (94) is fixedly connected to the left end of the mounting sleeve (91). A bending groove (95) is provided on the bending block (94).

3. A bending device for processing railway fittings according to claim 1, characterized in that: The guiding mechanism (10) includes a guide rail (101). Two guide rails (101) are fixedly connected to the top of the worktable (1). Slider (102) is slidably connected to the outer side of each of the two guide rails (101). The two sliders (102) are detachably connected to the left end of the stamping base (6) by two bolts.

4. A bending device for processing railway fittings according to claim 1, characterized in that: A connecting bolt (11) is provided on the inner side of the connector (5), and a protrusion (12) is fixedly connected to the left end of the stamping base (6). The protrusion (12) is located on the inner side of the connector (5), and the connecting bolt (11) passes through the protrusion (12). A connecting nut (13) is threaded on the outer side of the connecting bolt (11).

5. A bending device for processing railway fittings according to claim 1, characterized in that: The workbench (1) is provided with four legs at the bottom, and each of the four legs is fixedly connected with a foot pad (14).

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