A copper valve forging machine

Abstract

This utility model discloses a copper valve forging machine, including a lower die unit and an upper die unit. The lower die unit includes a lower template, an extrusion core-pulling mechanism, and a lubrication mechanism. The lower template has a lower mold cavity. The extrusion core-pulling mechanism and the lubrication mechanism are located next to the lower mold cavity. The extrusion core-pulling mechanism includes a core-pulling block and a core-pulling cylinder that drives the core-pulling block to move back and forth in the lower mold cavity. The lubrication mechanism includes a graphite distribution valve and a graphite nozzle connected to the graphite distribution valve. The upper die unit is located above the lower die unit and includes an upper template, a mold-closing cylinder that drives the upper template to move up and down, and an ejection mechanism. The upper template has an upper mold cavity corresponding to the lower mold cavity. The mold-closing cylinder is equipped with an auxiliary oil tank. The ejection mechanism includes an ejector rod connected to the inner wall of the upper mold cavity and an ejection cylinder that drives the ejector rod to eject the copper valve workpiece. Therefore, it can ensure the stability of the forging mold-closing pressure and improve the forming accuracy and production efficiency of copper valve forging.

Description

Technical Field

[0001] This utility model relates to the field of casting equipment, and in particular to a copper valve forging machine. Background Technology

[0002] In the field of copper valve forging, traditional equipment generally suffers from the following technical defects: First, the mold closing mechanism uses a single hydraulic cylinder drive and lacks a pressure compensation mechanism, resulting in large pressure fluctuations during mold closing and incomplete mold closure. Second, the core-pulling mechanism has a limited function, only capable of simple core-pulling actions and unable to simultaneously complete the extrusion molding of the workpiece during the core-pulling process. Third, the lubrication mechanism uses a centralized oil supply method, resulting in uneven lubricant distribution and an inability to achieve precise lubrication and cooling, leading to severe mold wear. Furthermore, the demolding process in existing equipment largely relies on manual operation, resulting in low automation and severely impacting production efficiency. These technical defects severely restrict the forming accuracy and production efficiency of copper valve products, leading to insufficient precision and poor surface quality in the forged copper valve workpieces, making it difficult to meet the quality requirements of modern industry for high-precision copper valve products. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a copper valve forging machine that can ensure the stability of the forging die closing pressure, and improve the forming accuracy and production efficiency of copper valve forging.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A copper valve forging machine, comprising

[0006] The lower mold unit includes a lower mold plate, an extrusion core-pulling mechanism, and a lubrication mechanism. The lower mold plate has a lower mold cavity. The extrusion core-pulling mechanism and the lubrication mechanism are located next to the lower mold cavity. The extrusion core-pulling mechanism includes a core-pulling block and a core-pulling cylinder that drives the core-pulling block to move back and forth in the lower mold cavity. The lubrication mechanism includes a graphite distribution valve and a graphite nozzle connected to the graphite distribution valve.

[0007] The upper mold unit is located above the lower mold unit and includes an upper mold plate, a mold-closing cylinder for driving the upper mold plate to move up and down, and an ejection mechanism. The upper mold plate has an upper mold cavity corresponding to the lower mold cavity. The mold-closing cylinder is equipped with an auxiliary oil tank. The ejection mechanism includes an ejector rod connected to the inner wall of the upper mold cavity and an ejection cylinder for driving the ejector rod to eject the copper valve workpiece.

[0008] A copper valve forging machine according to an embodiment of this utility model has at least the following beneficial effects: The copper valve forging machine of this utility model, by setting a mold-closing cylinder equipped with an auxiliary oil tank, can effectively stabilize the mold-closing pressure, ensuring tight mold closure and avoiding dimensional deviation problems caused by pressure fluctuations in traditional equipment. The innovative extrusion core-pulling mechanism not only realizes the core-pulling function but also simultaneously completes multi-directional extrusion molding of the workpiece during the movement, significantly improving product molding accuracy and material utilization. The lubrication mechanism controlled by the graphite distribution valve can precisely adjust the injection position and dosage of graphite lubricant, reducing mold wear while also providing cooling, extending mold life. Furthermore, the design of the automated ejection mechanism reduces manual intervention and improves production efficiency. These improvements collectively constitute a highly efficient, precise, and stable copper valve forging system, solving the technical problems of traditional equipment in pressure control, molding accuracy, and mold maintenance.

[0009] According to some embodiments of the present invention, the extrusion core-pulling mechanism is arranged in an X-shape around the lower mold cavity.

[0010] The advantages are: this layout allows the core-pulling block to apply force evenly from multiple directions, ensuring the workpiece is under balanced force, avoiding deformation caused by unilateral extrusion, while improving material utilization, making product dimensions more accurate, and molding quality more stable.

[0011] According to some embodiments of the present invention, each of the four core-pulling cylinders is provided with a proportional valve for controlling the speed.

[0012] The advantages are: the proportional valve can precisely adjust the movement speed of each cylinder, realize the synchronous coordination of the core pulling action, improve the stability and controllability of the extrusion process, ensure the consistency of the molding process, and reduce the scrap rate.

[0013] According to some embodiments of the present invention, there are two lubrication mechanisms, which are arranged opposite to each other and respectively between the two extrusion core-pulling mechanisms.

[0014] The advantages are: this symmetrical arrangement allows for more even lubricant coverage, ensuring uniform lubrication of the mold's working surface. The synergistic effect of the dual lubrication mechanisms effectively avoids localized wear caused by insufficient lubrication on one side, while also improving overall cooling efficiency.

[0015] According to some embodiments of the present invention, the core-pulling cylinder is equipped with a displacement sensor for reading the core-pulling block.

[0016] The advantages are: the displacement sensor can monitor the movement position of the core-pulling block in real time, ensuring that the extrusion stroke meets the preset requirements, improving molding accuracy and process consistency, and at the same time, it can facilitate the timely detection of abnormalities and improve the reliability of equipment operation.

[0017] According to some embodiments of the present invention, the extrusion core-pulling mechanism further includes a fixing seat disposed on the lower template for fixing the core-pulling cylinder.

[0018] The advantages are: mounting the core-pulling cylinder on a fixed base can enhance the overall rigidity of the mechanism, reduce vibration and displacement during the extrusion process, ensure molding stability, facilitate maintenance and adjustment, and improve the service life and ease of operation of the equipment.

[0019] According to some embodiments of the present invention, it also includes a frame, on which the upper mold unit and the lower mold unit are mounted.

[0020] The advantages are that the frame structure provides a stable support foundation for the entire forging system, ensuring precise alignment and stable operation of the upper and lower die units during high-pressure forging. The integrated frame design not only enhances the overall rigidity of the equipment and effectively suppresses vibration and deformation during forging, but also simplifies the installation and commissioning process.

[0021] According to some embodiments of the present invention, the upper mold unit further includes a middle beam plate and a top plate located above the upper template. The middle beam plate is used to fix the upper template. The ejection cylinder is installed inside the middle beam plate. The top plate is connected to the frame to install and fix the mold closing cylinder. The output end of the mold closing cylinder is connected to the middle beam plate.

[0022] The advantages are: the center beam plate, as the core load-bearing component, not only provides stable support for the upper template, but also houses the ejector cylinder, achieving a compact layout and efficient force transmission. The rigid connection between the top plate and the frame ensures the stable installation of the mold closing cylinder, while the cylinder output directly drives the center beam plate, forming a short-arm transmission system that significantly improves the response speed and pressure transmission efficiency of the mold closing action.

[0023] According to some embodiments of this utility model, the lower template is provided with guide posts, and the middle beam plate is provided with guide sleeves corresponding to the guide posts.

[0024] The benefits are: the guide post and guide sleeve mating structure helps improve the alignment accuracy of the upper and lower molds, avoids flash problems caused by mold closing deviations, extends the service life of the mold, improves the stability of equipment operation, reduces maintenance frequency, and lowers production costs.

[0025] According to some embodiments of the present invention, the lower template is provided with a swing block, the swing block is provided with a mold changing support column, and the mold changing support column is oscillatingly disposed between the upper template and the lower template.

[0026] The advantages are: the swingable mold change support column can simplify the mold change process, improve the convenience of operation, ensure the safety of operation through mechanical limit, reduce mold change time, improve production efficiency, and reduce the risk of manual operation.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0030] Figure 2 for Figure 1 A diagram illustrating the removal of the rack;

[0031] Figure 3 This is a top view of the lower mold unit;

[0032] Figure 4 This is a side view of the central beam slab;

[0033] Figure 5 for Figure 4 A bottom view.

[0034] Reference numerals: Lower template 100, Lower mold cavity 110, Core pulling block 120, Core pulling cylinder 130, Graphite distribution valve 140, Upper template 150, Mold closing cylinder 160, Auxiliary oil tank 170, Ejection cylinder 180, Fixed seat 190, Frame 200, Middle beam plate 210, Top plate 220, Guide pillar 230, Guide sleeve 240, Swing block 250, Mold changing support pillar 260, Upper mold cavity 270. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between 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.

[0039] The following is for reference. Figures 1-5 A copper valve forging machine is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0040] like Figures 1-2 As shown, the copper valve forging machine consists of two core parts: a lower die unit and an upper die unit.

[0041] Among them, such as Figure 3As shown, the lower mold unit consists of a lower mold plate 100, an extrusion core-pulling mechanism, and a lubrication mechanism. The lower mold plate 100 has a precision lower mold cavity 110, and the extrusion core-pulling mechanism and the lubrication mechanism are both arranged around the lower mold cavity 110. The extrusion core-pulling mechanism includes a core-pulling block 120 and core-pulling cylinders 130 that drive the core-pulling block 120 to reciprocate. Four core-pulling cylinders 130 are distributed in an X-shape around the lower mold cavity 110. Each cylinder is equipped with a proportional valve (not shown in the figure) to control the movement speed and is securely mounted on the lower mold plate 100 by a fixing seat 190. The cylinder is also equipped with a displacement sensor (not shown in the figure) to monitor the position of the core-pulling block 120 in real time. The lubrication mechanism has two sets of graphite distribution valves 140, symmetrically arranged between the extrusion core-pulling mechanisms. Each distribution valve is connected to multiple graphite nozzles (not shown in the figure) to achieve precise lubrication of the mold working surface.

[0042] like Figure 4 and Figure 5 As shown, the upper mold unit is located above the lower mold unit and includes an upper mold plate 150, a mold closing cylinder 160, and an ejection mechanism. The upper mold plate 150 has an upper mold cavity 270 corresponding to the lower mold cavity 110. The mold closing cylinder 160 is equipped with an auxiliary oil tank 170 to drive the upper mold plate 150 to move up and down. The ejection mechanism consists of an ejector rod (not shown in the figure) located in the upper mold cavity 270 and an ejection cylinder 180 that drives the ejector rod. The upper mold unit adopts a layered structure design, including a middle beam plate 210 that fixes the upper mold plate 150 and a top plate 220 that connects the frame 200. The ejection cylinder 180 is integrated in the middle beam plate 210. The top plate 220 is rigidly connected to the frame 200 and has the mold closing cylinder 160 installed on it. The output end of the mold closing cylinder 160 directly drives the middle beam plate 210 to move. The lower mold plate 100 is provided with guide pillars 230, and the middle beam plate 210 is provided with guide sleeves 240 at corresponding positions to ensure mold closing alignment accuracy. To facilitate mold replacement, the lower mold plate 100 is also equipped with a swing block 250 with a mold replacement support column 260.

[0043] The working process of this equipment is as follows: First, the heated copper rod is placed into the lower mold cavity 110. The mold closing cylinder 160 drives the upper mold plate 150 to press down to the set position, and four sets of core-pulling cylinders 130 move synchronously to complete the extrusion molding. During the molding process, the graphite lubrication mechanism automatically sprays lubricant through the graphite nozzle, and the displacement sensor monitors the core-pulling position in real time. After molding, the upper mold returns to its position, and the ejection cylinder 180 ejects the workpiece from the upper mold through the ejector rod, completing one work cycle. When changing the mold, the mold changing support column 260 can be swung to the working position to change the mold. This copper valve forging machine achieves multiple technical advantages through innovative structural design: the auxiliary oil tank 170 equipped with the mold closing cylinder 160 ensures the stability of the mold closing pressure; the multi-directional synchronous extrusion core-pulling mechanism significantly improves the molding accuracy; the lubrication mechanism effectively extends the mold life; the automated ejection mechanism improves production efficiency; the stable frame structure 200 and the guide column 230 and guide sleeve 240 work together to ensure the reliability of the equipment operation; and the convenient mold changing design reduces the difficulty of maintenance. These technical features together constitute a highly efficient, precise, and stable copper valve forging system, solving the technical problems of traditional forging equipment in pressure control, forming accuracy, and mold maintenance.

[0044] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A copper valve forging machine, characterized in that, include: The lower mold unit includes a lower mold plate (100), an extrusion core-pulling mechanism, and a lubrication mechanism. The lower mold plate (100) is provided with a lower mold cavity (110). The extrusion core-pulling mechanism and the lubrication mechanism are located next to the lower mold cavity (110). The extrusion core-pulling mechanism includes a core-pulling block (120) and a core-pulling cylinder (130) that drives the core-pulling block (120) to move back and forth in the lower mold cavity (110). The lubrication mechanism includes a graphite distribution valve (140) and a graphite nozzle connected to the graphite distribution valve (140). The upper mold unit is located above the lower mold unit and includes an upper mold plate (150), a mold closing cylinder (160) for driving the upper mold plate (150) to move up and down, and an ejection mechanism. The upper mold plate (150) is provided with an upper mold cavity (270) corresponding to the lower mold cavity (110). The mold closing cylinder (160) is equipped with an auxiliary oil tank (170). The ejection mechanism includes an ejector rod connected to the inner wall of the upper mold cavity (270) and an ejection cylinder (180) for driving the ejector rod to eject the copper valve workpiece.

2. The copper valve forging machine according to claim 1, characterized in that, The extrusion core-pulling mechanism is arranged in an X-shape around the lower mold cavity (110).

3. A copper valve forging machine according to claim 2, characterized in that, Each of the four core-pulling cylinders (130) is equipped with a proportional valve for controlling the speed.

4. A copper valve forging machine according to claim 2, characterized in that, The lubrication mechanism is provided in two parts, which are arranged opposite to each other and are respectively located between the two extrusion core pulling mechanisms.

5. A copper valve forging machine according to claim 1, characterized in that, The core-pulling cylinder (130) is equipped with a displacement sensor for reading the core-pulling block (120).

6. A copper valve forging machine according to claim 1, characterized in that, The extrusion core-pulling mechanism also includes a fixing seat (190) disposed on the lower template (100) for fixing the core-pulling cylinder (130).

7. A copper valve forging machine according to claim 1, characterized in that, It also includes a frame (200), on which the upper mold unit and the lower mold unit are mounted.

8. A copper valve forging machine according to claim 7, characterized in that, The upper mold unit also includes a middle beam plate (210) and a top plate (220) located above the upper template (150). The middle beam plate (210) is used to fix the upper template (150). The ejection cylinder (180) is installed inside the middle beam plate (210). The top plate (220) is connected to the frame (200) to install and fix the mold closing cylinder (160). The output end of the mold closing cylinder (160) is connected to the middle beam plate (210).

9. A copper valve forging machine according to claim 8, characterized in that, The lower template (100) is provided with guide posts (230), and the middle beam plate (210) is provided with guide sleeves (240) corresponding to the guide posts (230).

10. A copper valve forging machine according to claim 1, characterized in that, The lower template (100) is provided with a swing block (250), and the swing block (250) is provided with a mold changing support column (260). The mold changing support column (260) is swing-positioned between the upper template (150) and the lower template (100).

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