Valve seat machining reamer

Abstract

The utility model relates to valve seat processing neck-in technical field especially a valve seat processing neck-in machine, including mainframe, the horizontal opening and operating mouth of being set up in mainframe, be provided with the material placing plate in operating mouth, the right -hand member of mainframe is equipped with cylinder frame, be provided with horizontal cylinder on cylinder frame, be equipped with neck-in forming die on the cylinder rod of horizontal cylinder, the top of mainframe is provided with hot -blast machine body, is connected with hot -blast pipe on hot -blast machine body, the left -hand member of mainframe is equipped with motor, be equipped with motor shaft on motor, be equipped with rotating stand on motor shaft, be provided with clamping cylinder on rotating stand, be equipped with clamping sleeve plate on the cylinder rod of clamping cylinder, are connected with flexible pipe on hot -blast pipe, be provided with hot -blast spray cover and handle on flexible pipe, be equipped with air outlet net board on hot -blast spray cover, open vertical perforation on mainframe, be provided with positioning sleeve in vertical perforation. Improved the hot plasticity of copper bar blank on the neck-in end portion that needs, and then guaranteed the neck-in forming effect of later stage, improved the hot -blast blowing heating effect for copper bar blank on the neck-in end portion that needs.

Description

Technical Field

[0001] This utility model relates to the field of valve seat processing necking technology, and in particular to a valve seat processing necking machine. Background Technology

[0002] Valve seats are a part of valves and are widely used in various fields such as petroleum, chemical, power, water conservancy, and home. Valve seats are generally made of raw copper rods.

[0003] The valve seat is not a simple cylinder; it usually has a critical sealing bevel. This bevel needs to fit tightly with the valve core (such as the ball in a ball valve or the gate in a gate valve) to achieve a seal. This bevel needs to be machined during the initial processing of the raw material copper rod. Therefore, a shrinking machine for processing the end face of the raw material copper rod for the valve seat is required.

[0004] The specific working principle is as follows: First, the long copper rod is cut into the length of copper rod blank required for a single valve seat by a saw or lathe. Then, the copper rod blank is clamped on the fixture of the shrinking machine. The end of the copper rod blank that needs to be shrunk is heated to make it have good thermoplasticity. After heating, the shrinking forming mold is moved horizontally by the transmission mechanism. After the shrinking forming mold is fitted onto one end of the heated copper rod blank, a period of time is waited for the end of the copper rod blank to cool and shrink. Then, the shrinking forming mold can be moved and reset.

[0005] Currently, the existing shrinking machines used for processing copper rod blanks, the raw material for valve seats, do not heat the end of the copper rod blank that needs to be shrunk evenly, resulting in weak thermoplasticity of the end that needs to be shrunk, which in turn affects the subsequent shrinking molding effect.

[0006] Therefore, we designed a necking machine for processing copper rod blanks, the raw material for valve seats, to meet the needs of practical applications. Utility Model Content

[0007] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a valve seat processing necking machine.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: Design a valve seat processing necking machine, including a main frame with a horizontal opening and an operating port. A material placement plate is provided in the operating port. A cylinder frame is provided at the right end of the main frame, and a horizontal cylinder is provided on the cylinder frame. A necking forming mold is provided on the cylinder rod of the horizontal cylinder. A hot air unit is provided at the top of the main frame, and a hot air pipe is connected to the hot air unit. A motor is provided at the left end of the main frame, and a motor shaft is provided on the motor. A rotating frame is provided on the motor shaft, and a clamping cylinder is provided on the rotating frame. A clamping plate is provided on the cylinder rod of the clamping cylinder, and a copper rod blank is clamped on the clamping plate. The hot air duct is connected to a telescopic tube, and the telescopic tube is equipped with a hot air spray hood and a handle. The hot air spray hood is equipped with an air outlet mesh plate. A vertical through hole is provided on the main frame, and a positioning sleeve is provided inside the vertical through hole.

[0009] In detail, the interior of the main frame is a hollow cavity that communicates with the horizontal opening, the cylinder frame is an L-shaped structure, and the necking mold is a cylindrical inner sleeve structure with its horizontal central axis aligned with the horizontal central axis of the motor shaft.

[0010] In detail, the jacket plate has an arc-shaped structure, and the jacket plate and the clamping cylinder are a set, consisting of two sets that are symmetrically arranged vertically.

[0011] In detail, the rotating frame has an overall U-shaped structure, and the motor shaft passes through the left end of the main frame and is fixedly installed with the rotating frame.

[0012] In detail, the positioning sleeve is embedded in the inner wall of the vertical through hole, and the vertical tube of the hot air pipe passes through the positioning sleeve.

[0013] In detail, the hot air spray hood is a downward diffusion type hood structure, the telescopic tube is a corrugated tube structure, and the handle is located on the outer wall of the right end of the telescopic tube.

[0014] In detail, the air outlet mesh plate is a disc-shaped structure and is located at the lower end of the hot air spray hood. The pre-set mesh holes on the air outlet mesh plate are connected to the inner cavity of the hot air spray hood.

[0015] The design scheme proposed in this utility model has the following beneficial effects in application: 1. This utility model features an electrically driven rotating frame on a main frame, with symmetrical clamping structures on the rotating frame. A hot air blower with a hot air hood is located at the top of the main frame, and an exhaust mesh is installed on the hot air hood. When the copper billet is stably clamped by the clamping plate, the clamped copper billet rotates axially at a uniform speed before the necking process. Simultaneously, the hot air jet from above effectively and uniformly heats the end of the copper billet that needs necking. After heating, the necking process can be performed, effectively improving the thermoplasticity of the necking end of the copper billet and thus ensuring the subsequent necking effect.

[0016] 2. This utility model sets a telescopic tube between the hot air spray hood and the hot air pipe, and sets a handle structure on the telescopic tube. The handle can be held and pulled up and down to adjust the distance between the air outlet mesh plate of the hot air spray hood and the end of the copper rod billet that needs to be narrowed. This ensures that the air outlet mesh plate is adjusted to a suitable distance for hot air blowing and heating, and further improves the hot air blowing and heating effect on the end of the copper rod billet that needs to be narrowed. Attached Figure Description

[0017] Figure 1 This is a first-view perspective three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a second-view perspective three-dimensional schematic diagram of the overall structure of this utility model; Figure 3 For the present utility model Figure 1 A three-dimensional schematic diagram of a rotating frame with a jacket plate. Figure 4 For the present utility model Figure 3 Enlarged view of a section at point M; Figure 5 For the present utility model Figure 3 A three-dimensional schematic diagram of a horizontal cylinder with a necking forming mold. Figure 6 This is a third-view perspective three-dimensional schematic diagram of the overall structure of this utility model.

[0018] In the diagram: 1 Main frame; 10 Vertical through hole; 101 Positioning sleeve; 11 Horizontal opening; 12 Cylinder frame; 13 Horizontal cylinder; 14 Narrowing forming mold; 2 Operating port; 21 Material placement plate; 3 Hot air machine body; 31 Hot air pipe; 4 Telescopic pipe; 41 Handle; 5 Hot air spray cover; 51 Air outlet mesh plate; 6 Motor; 61 Motor shaft; 7 Rotating frame; 71 Clamping cylinder; 72 Clamping plate; 8 Copper rod blank. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-6 A valve seat processing necking machine includes a main frame 1, a horizontal opening 11 and an operating port 2 on the main frame 1, a material placement plate 21 in the operating port 2, a cylinder frame 12 at the right end of the main frame 1, a horizontal cylinder 13 on the cylinder frame 12, a necking forming mold 14 on the cylinder rod of the horizontal cylinder 13, a hot air body 3 at the top of the main frame 1, a hot air pipe 31 connected to the hot air body 3, a motor 6 at the left end of the main frame 1, a motor shaft 61 on the motor 6, a rotating frame 7 on the motor shaft 61, a clamping cylinder 71 on the rotating frame 7, a clamping plate 72 on the cylinder rod of the clamping cylinder 71, and a copper rod blank 8 clamped on the clamping plate 72. A telescopic pipe 4 is connected to the hot air pipe 31. A hot air spray hood 5 and a handle 41 are provided on the telescopic pipe 4. An air outlet mesh plate 51 is provided on the hot air spray hood 5. A vertical through hole 10 is opened on the main frame 1, and a positioning sleeve 101 is provided in the vertical through hole 10. The main frame 1, horizontal opening 11, horizontal cylinder 13, necking forming mold 14, material plate 21, and copper rod blank 8 described in this patent are all related structures of the necking machine for processing copper rod blanks, which are existing technologies. Some existing structures are not drawn or labeled, so there is no need to elaborate.

[0021] The hot air unit 3 and hot air pipe 31 described in this patent are a set, which is the prior art. Its core function is to draw in ambient air, heat it to a set high temperature through an internal heating element, and then force it to be transported by a fan, and then deliver hot air stably and evenly through the hot air pipe 31.

[0022] It should be further explained that the interior of the main frame 1 is a hollow cavity and is connected to the horizontal opening 11. The cylinder frame 12 has an overall L-shaped structure. The necking forming mold 14 has an overall cylindrical inner sleeve structure and its horizontal central axis is horizontally aligned with the horizontal central axis of the motor shaft 61. This ensures that the right end of the clamped copper rod blank 8 is precisely fitted by the necking forming mold 14, which is shifted to the left, to achieve the necking effect.

[0023] It should be further noted that the overall structure of the clamping plate 72 is arc-shaped. The clamping plate 72 and the clamping cylinder 71 are a set, and there are two sets in total, which are symmetrically arranged. The clamping plate 72 is made of aluminum alloy. The hardness of aluminum alloy is much lower than that of brass, so it will not cause the copper rod to deform during clamping.

[0024] It should be further explained that the rotating frame 7 has a U-shaped structure. The motor shaft 61 passes through the left end of the main frame 1 and is fixedly installed with the rotating frame 7. When the main frame 1 rotates axially, the clamping cylinder will not collide with the inner wall of the main frame 1.

[0025] It should be further explained that the positioning sleeve 101 is embedded in the inner wall of the vertical through hole 10. The vertical tube of the hot air pipe 31 passes through the positioning sleeve 101. The positioning sleeve 101 is made of PTFE polytetrafluoroethylene material, which is resistant to high temperature and has excellent sealing performance. Epoxy resin is applied to the inner wall of the positioning sleeve 101, and then the hot air pipe 31 is passed through it. After the epoxy resin solidifies, the fixing effect between the hot air pipe 31 and the positioning sleeve 101 can be achieved.

[0026] An asbestos gasket is fitted on the outer wall of the hot air duct 31 to prevent heat from escaping.

[0027] It should be further noted that the hot air spray shroud 5 has a downward diffusion structure, which ensures that the right end of the copper rod blank 8 is heated by a full flow of hot air.

[0028] The telescopic tube 4 has a corrugated tube structure and is made of stainless steel. It can only achieve vertical extension and retraction and can be positioned in real time.

[0029] The handle 41 is located on the outer wall of the right end of the telescopic tube 4, which makes it easy to hold with one hand and adjust the position of the air outlet mesh 51 vertically.

[0030] It should be further noted that the air outlet mesh plate 51 is a disc-shaped structure and is located at the lower end of the hot air spray hood 5. The pre-set mesh holes on the air outlet mesh plate 51 are connected to the inner cavity of the hot air spray hood 5. Both the air outlet mesh plate 51 and the hot air spray hood 5 are made of stainless steel, which is durable. Air outlet holes are evenly opened on the air outlet mesh plate 51, and an asbestos gasket is provided on the outside to prevent heat from dissipating.

[0031] Working principle: First, the copper billet 8 is held and passed through the operating port 2. Then, the copper billet 8 is placed between two clamping plates 72. Next, the clamping cylinders 71 on both sides are started simultaneously, driving the clamping plates 72 on both sides to move at the same time and stably clamp the outer wall of the copper billet 8. The clamping cylinders 71 are stopped. Then, the motor 6 is started, and the motor shaft 61 drives the rotating frame 7 and the clamped copper billet 8 to rotate axially at a uniform speed. Simultaneously, the hot air unit 3 is activated. The hot airflow generated by the hot air unit 3 (existing technology) is delivered to the hot air spray nozzle 5 through the hot air pipe 31 and the telescopic pipe 4. The nozzle is sprayed downwards through the evenly arranged air outlet holes on the air outlet mesh plate 51. At this time, the hot airflow will effectively, evenly and comprehensively heat the end of the copper rod blank 8 that needs to be narrowed (the right end of the copper rod blank 8) that is rotating axially at a uniform speed. After heating is completed and the part has good thermoplasticity, the hot air unit 3 and the motor 6 are stopped. Then, the handle 41 is held and the hot air is sprayed downwards. The air outlet mesh plate 51 moves upward and resets. Then, the horizontal cylinder 13 is started. The cylinder rod of the horizontal cylinder 13 extends to the left, driving the necking forming mold 14 to move to the left and pass through the horizontal opening. When the necking forming mold 14 is fitted and stuck on the right end of the copper rod blank 8, the horizontal cylinder 13 is stopped. After a period of time, when the right end of the copper rod blank cools and forms the necking, the necking forming mold 14 can be moved to the right and reset. The necking forming operation can then be performed, which improves the thermoplasticity of the end of the copper rod blank 8 that needs to be necked, thereby ensuring the necking forming effect in the later stage.

[0032] In addition, by holding the handle 41 with one hand and pulling it down, the telescopic tube 4 itself will be extended and retracted, which in turn will cause the hot air spray hood 5 and the air outlet mesh plate 51 to be adjusted up and down. This allows the spacing between the air outlet mesh plate 51 and the end of the copper rod billet 8 that needs to be narrowed to be adjusted. When the air outlet mesh plate 51 is adjusted to the appropriate spacing size for hot air blowing and heating, the hand can be removed from the handle 41, and the rotational hot air blowing and heating operation can be performed, which further improves the hot air blowing and heating effect on the end of the copper rod billet 8 that needs to be narrowed. The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A valve seat processing necking machine, comprising a main frame (1), characterized in that: The main frame (1) has a horizontal opening (11) and an operation port (2). The operation port (2) is equipped with a material placement plate (21). The right end of the main frame (1) is equipped with a cylinder frame (12). The cylinder frame (12) is equipped with a horizontal cylinder (13). The cylinder rod of the horizontal cylinder (13) is equipped with a necking forming mold (14). The top of the main frame (1) is equipped with a hot air machine body (3). The hot air machine body (3) is connected with a hot air pipe (31). The left end of the main frame (1) is equipped with a motor (6). The motor (6) is equipped with a motor shaft (61). The motor shaft (61) is equipped with a rotating frame (7). The rotating frame (7) is equipped with a clamping cylinder (71). The cylinder rod of the clamping cylinder (71) is equipped with a clamping plate (72). The clamping plate (72) holds a copper rod blank (8). The hot air pipe (31) is connected to a telescopic pipe (4), and the telescopic pipe (4) is provided with a hot air spray hood (5) and a handle (41). The hot air spray hood (5) is provided with an air outlet mesh plate (51). A vertical through hole (10) is provided on the main frame (1), and a positioning sleeve (101) is provided in the vertical through hole (10).

2. The valve seat processing necking machine according to claim 1, characterized in that: The interior of the main frame (1) is a hollow cavity and is connected to the horizontal opening (11). The cylinder frame (12) is an L-shaped structure. The constriction forming mold (14) is a cylindrical inner sleeve structure and its horizontal central axis is aligned with the horizontal central axis of the motor shaft (61).

3. The valve seat processing necking machine according to claim 1, characterized in that: The jacket plate (72) is an arc-shaped structure. The jacket plate (72) and the clamping cylinder (71) are a set, and there are two sets in total that are symmetrical from top to bottom.

4. A valve seat processing necking machine according to claim 1, characterized in that: The rotating frame (7) has a U-shaped structure, and the motor shaft (61) passes through the left end of the main frame (1) and is fixedly installed with the rotating frame (7).

5. A valve seat processing necking machine according to claim 1, characterized in that: The positioning sleeve (101) is embedded in the inner wall of the vertical through hole (10), and the vertical tube of the hot air pipe (31) passes through the positioning sleeve (101).

6. A valve seat processing necking machine according to claim 1, characterized in that: The hot air spray hood (5) is a downward diffusion hood structure, the telescopic tube (4) is a corrugated tube structure, and the handle (41) is located on the outer wall of the right end of the telescopic tube (4).

7. A valve seat processing necking machine according to claim 1, characterized in that: The air outlet mesh plate (51) is a disc-shaped structure and is located at the lower end of the hot air spray hood (5). The pre-set mesh holes on the air outlet mesh plate (51) are connected to the inner cavity of the hot air spray hood (5).

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