Circumferential heterogeneous surface diesel engine valve and forming device

Abstract

The utility model relates to the technical field of air valves, in particular to a circumferential heterogeneous surface diesel engine air valve and forming device which comprises an air valve body. A limiting structure used for limiting rotation of the valve body is arranged on the valve body. Comprising a machine box, and a workbench is installed on the machine box; a clamping groove and a cutter feeding groove are formed in the workbench. A clamping sliding block is embedded in the clamping groove in a sliding mode, and an ejector pin is installed on the clamping sliding block. A clamping mechanism is arranged on the machine box and can drive the clamping sliding blocks to be close to each other so as to reduce the distance between the ejector pins. A progressive block is embedded in the cutter feeding groove in a sliding mode, and a mounting plate is mounted on the progressive block. A tool apron is arranged on the mounting plate; the machine box is provided with a connected feed mechanism, and the feed mechanism can drive the progressive block to be close to the ejector pin so as to drive the tool apron to be close to the ejector pin. And a feeding mechanism is further arranged on the mounting plate.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a diesel engine valve with a circumferentially heterogeneous surface and a molding device. Background Art

[0002] Valves are components within a diesel engine that allow air to enter and exhaust combustion gases. Within a diesel engine, valves are divided into intake and exhaust valves. The intake valve draws air into the engine for mixing with fuel, while the exhaust valve discharges and dissipates the heat. Proper valve function is crucial to diesel engine performance; any malfunction can affect normal engine operation.

[0003] Common valves are connected to diesel engines through valve lock clamps, and upper and lower spring bases are fixedly installed on the valves, with multiple sets of return springs wrapped between the upper and lower spring bases; the valve lock clamps give the valves a relatively large locking force so that the valves can open and close the cylinders normally when the diesel engine is working, completing exhaust and intake.

[0004] When the diesel engine is working, it will generate vibrations with large frequency and small amplitude. This vibration has a relative impact on the connection between the valve and the valve lock clamp (the valve will rotate under the influence of vibration, and when it rotates to a certain angle, it will lose connection with the valve lock clamp), which will reduce the locking ability of the valve lock clamp on the valve (not obvious in the short term). After the diesel engine has been used for a relatively long period of time, the locking ability of the valve lock clamp will be greatly reduced or even fail, which will reduce the ability of the diesel engine to drive the valve to open and close the cylinder or make it unable to drive the valve to move, making the diesel engine unable to work normally. Utility Model Content

[0005] The purpose of the utility model is to provide a diesel engine valve with a circumferentially heterogeneous surface and a molding device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A circumferentially heterogeneous surface diesel engine valve, comprising a valve body; a connecting post is mounted on the valve body; positioning holes are formed on both the connecting post and the valve body;

[0008] The valve body is provided with a limiting structure for limiting the rotation of the valve body.

[0009] As a further solution of the present invention: the limiting structure includes limiting grooves symmetrically opened on the valve body along the length direction of the valve body.

[0010] A molding device for a diesel engine valve with a circumferentially heterogeneous surface comprises a chassis with a workbench mounted on the chassis; the workbench is symmetrically provided with clamping grooves in the longitudinal direction and symmetrically provided with feed grooves in the transverse direction;

[0011] A clamping slider is slidably engaged in the clamping groove, and ejector pins are installed on opposite sides of the two clamping sliders; a clamping mechanism connected to the clamping sliders is provided on the chassis, and the clamping mechanism can drive the clamping sliders to move closer to each other to reduce the spacing between the ejector pins;

[0012] A progressive block is slidably engaged in the feed groove, and a mounting plate is mounted on the progressive block; a tool holder is provided on the mounting plate; the tool holder is used to fix and drive the milling cutter to rotate at high speed; feed mechanisms connected to the progressive block are provided on both lateral sides of the chassis, and the feed mechanisms can drive the progressive block close to the ejector pin, thereby driving the tool holder close to the ejector pin through the mounting plate;

[0013] The mounting plate is further provided with a tool feeding mechanism, which can drive the tool holder to move along the length direction of the ejector pin.

[0014] As a further solution of the present invention: the clamping mechanism includes a bidirectional screw column rotatably installed in the chassis, both ends of the bidirectional screw column are threadedly connected with internal thread sliders, and the internal thread sliders are connected to the clamping sliders.

[0015] As a further solution of the present invention: the feed mechanism includes a cylinder push rod slidably installed in the chassis, a mounting bracket is installed on the cylinder push rod, a guide rod is installed on the mounting bracket, a first progressive plate and a second progressive plate are slidably installed on the guide rod, and the first progressive plate is close to the mounting bracket, a telescopic column is installed on the first progressive plate, a telescopic sleeve slidably engaged with the telescopic column is installed on the second progressive plate, and a spring connected to the telescopic column is installed in the telescopic sleeve; a limit block that interferes with the second progressive plate is installed on the end of the guide rod away from the mounting bracket.

[0016] As a further solution of the present invention: the feed mechanism also includes an adjusting screw rotatably mounted on the mounting frame, and the first progressive plate is equipped with an internal threaded sleeve threadedly connected to the adjusting screw.

[0017] As a further solution of the present invention: the tool feeding mechanism includes a guide protrusion installed on the mounting plate, and the tool holder is slidingly engaged with the guide protrusion; a tool feeding screw rod threadedly connected to the tool holder is rotatably installed on the mounting plate.

[0018] A method for forming a diesel engine valve with a circumferentially heterogeneous surface using the above-mentioned forming device comprises the following steps:

[0019] The first step is to install the milling cutter on the tool holder; start the clamping mechanism, and drive the ejectors to move closer to each other through the action of the clamping mechanism, so that the ejectors match the positioning holes on the valve body blank, and the valve body blank is clamped by the ejectors with the spacing being continuously reduced; start the motor on the tool holder to rotate the milling cutter at high speed;

[0020] Step 2: Start the feed mechanism; the feed mechanism drives the tool holder to approach the valve body blank. During the approach process, the valve body is milled by the high-speed rotating milling cutter until the hole depth meets the design requirements.

[0021] Step 3: Start the tool feeding mechanism, and drive the tool holder to move along the length direction of the valve body through the tool feeding mechanism to drive the high-speed rotating milling cutter to mill the valve body to mill out the limit groove;

[0022] Step 4: Remove the finished valve body and replace it with another valve body blank.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the limiting groove and the protrusion are slidably matched, and the groove wall of the limiting groove will conflict with the protrusion to offset the rotation of the valve body caused by the vibration generated by the diesel engine operation, thereby ensuring the stable connection between the connecting column and the valve lock clamp, and improving the safety, stability and service life of the diesel engine; the valve body blank is clamped and positioned by the clamping mechanism to drive the ejector pin to clamp the blank, which is convenient for the subsequent milling process and also improves the accuracy of the milling process; the valve body blank can be milled more quickly by the alternating action of the tool feeding mechanism and the feed mechanism; and the feed mechanism will, when the hardness of the blank material is large, gather the thrust and reaction force on the spring through the first progressive plate and the second progressive plate, and avoid the problem of low production efficiency such as the blank material being too hard and the feed pressure being too large resulting in a high damage rate of the milling cutter, or the material hardness being small and the feed pressure being too small resulting in reduced production efficiency through the elastic force of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of an embodiment of a diesel engine valve with circumferentially heterogeneous surfaces.

[0025] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of a circumferentially heterogeneous surface diesel engine valve.

[0026] Figure 3 The figure is a structural schematic diagram of an embodiment of a forming device for a diesel engine valve with a circumferentially heterogeneous surface.

[0027] Figure 4This is a schematic structural diagram of a chassis in one embodiment of a forming device for a diesel engine valve with a circumferentially heterogeneous surface.

[0028] Figure 5 for Figure 4 Schematic diagram of the structure at point A in the example.

[0029] Figure 6 This is a schematic structural diagram of the clamping mechanism in one embodiment of a forming device for a diesel engine valve with a circumferentially heterogeneous surface.

[0030] Figure 7 This is a schematic structural diagram of a workbench in one embodiment of a forming device for a diesel engine valve with a circumferentially heterogeneous surface.

[0031] Figure 8 This is a structural schematic diagram of the feed mechanism and the tool movement mechanism in one embodiment of a forming device for a circumferentially heterogeneous surface diesel engine valve.

[0032] Figure 9 for Figure 8 Schematic diagram of the structure at point B.

[0033] Figure 10 This is a schematic structural diagram of the first progressive plate and the second progressive plate in an embodiment of a forming device for a circumferentially heterogeneous surface diesel engine valve.

[0034] In the figure: 1, valve body; 101, limiting groove; 102, connecting column; 103, positioning hole;

[0035] 2. Chassis; 201. Workbench; 202. Clamping slot; 203. Feed slot;

[0036] 3. Bidirectional screw column;

[0037] 4. Internal thread slider;

[0038] 5. Clamping slider;

[0039] 6. Thimble;

[0040] 7. Cylinder ejector rod;

[0041] 8. Mounting frame; 801. Guide rod; 802. Limit block;

[0042] 9. First progressive plate; 901. Telescopic column; 902. Internally threaded sleeve;

[0043] 10. Second progressive plate; 1001. Telescopic sleeve;

[0044] 11. Progressive block;

[0045] 12. Mounting plate; 1201. Guide protrusion;

[0046] 13. Knife holder;

[0047] 14. Screw rod;

[0048] 15. Spring;

[0049] 16. Adjust the screw. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiment.

[0052] See also Figures 1 to 8 In an embodiment of the present invention, a circumferentially heterogeneous diesel engine valve comprises a valve body 1; a connecting post 102 is mounted on the valve body 1; and positioning holes 103 are provided on both the connecting post 102 and the valve body 1;

[0053] The valve body 1 is provided with a limiting structure for limiting the rotation of the valve body 1 .

[0054] Taking an embodiment combining all the features described in this application as an example, when in use, the connecting column 102 is used to connect to the valve lock clamp in the diesel engine. The valve lock clamp can connect the valve body 1 to the diesel engine by clamping the connecting column 102; at the same time, the valve body 1 is slidably connected to the cylinder of the diesel engine through a limiting structure.

[0055] Since the diesel engine generates high-frequency vibrations when it is working, the valve body 1 tends to rotate. The limiting structure can offset this rotation tendency to prevent the valve body 1 from rotating in the cylinder due to external factors such as vibrations after long-term use, thereby reducing the clamping force of the valve lock clamp or even completely losing its clamping ability, thereby damaging the diesel engine.

[0056] In another embodiment of the present invention, the limiting structure includes limiting grooves 101 symmetrically arranged on the valve body 1 along the length direction of the valve body 1 .

[0057] Taking the embodiment combining all the features recorded in this application as an example, when in use, a protrusion is installed in the diesel engine cylinder and slides with the limit groove 101. When the diesel engine is in operation, the valve body 1 will reciprocate in the cylinder. At this time, the limit groove 101 slides with the protrusion, and the groove wall of the limit groove 101 will conflict with the protrusion to offset the rotation of the valve body 1 caused by the vibration generated by the operation of the diesel engine, thereby ensuring the stable connection between the connecting column 102 and the valve lock clamp, thereby improving the safety, stability and service life of the diesel engine.

[0058] A molding device for a diesel engine valve with a circumferentially heterogeneous surface as described above comprises a chassis 2 on which a workbench 201 is mounted; the workbench 201 is symmetrically provided with clamping grooves 202 in the longitudinal direction and symmetrically provided with feed grooves 203 in the transverse direction;

[0059] A clamping slider 5 is slidably engaged in the clamping groove 202, and an ejector pin 6 is installed on the opposite side of the two clamping sliders 5; a clamping mechanism connected to the clamping sliders 5 is provided on the chassis 2, and the clamping mechanism can drive the clamping sliders 5 to move closer to each other to reduce the distance between the ejector pins 6;

[0060] A progressive block 11 is slidably engaged in the feed groove 203, and a mounting plate 12 is mounted on the progressive block 11; a tool holder 13 is provided on the mounting plate 12; the tool holder 13 is used to fix and drive the milling cutter to rotate at high speed; feed mechanisms connected to the progressive block 11 are provided on both lateral sides of the chassis 2, and the feed mechanisms can drive the progressive block 11 close to the ejector pin 6, thereby driving the tool holder 13 close to the ejector pin 6 through the mounting plate 12;

[0061] The mounting plate 12 is further provided with a tool feeding mechanism, which can drive the tool holder 13 to move along the length direction of the ejector pin 6 .

[0062] Taking the embodiment combining all the features described in this application as an example, when in use, the clamping mechanism drives the clamping slider 5 to slide in the clamping groove 202, so that the clamping sliders 5 are close to each other, thereby reducing the spacing of the ejector pins 6, so that the ejector pins 6 can be stuck in the positioning hole 103, thereby clamping the valve body 1 blank.

[0063] The milling cutter is installed on the cutter seat 13, and the cutter seat 13 can drive the milling cutter to rotate at high speed, and drive the progressive block 11 close to the direction of the ejector 6 through the feed mechanism, thereby driving the cutter seat 13 close to the valve body 1 blank clamped by the ejector 6 through the mounting plate 12. During the approaching process, the high-speed rotating milling cutter will contact the valve body 1 blank and continue to advance, and finally a depth consistent with the depth of the formed limit groove 101 will be opened on the valve body 1.

[0064] Afterwards, the tool holder 13 is driven by the tool feeding mechanism to move along the length direction of the valve body 1 blank, and the relative movement distance is consistent with the length of the formed limiting groove 101, thereby driving the high-speed rotating milling cutter to mill the limiting groove 101 on the valve body 1 blank.

[0065] The valve body 1 blank is clamped and positioned by the clamping mechanism driving the ejector pin 6 to clamp the blank, which facilitates the subsequent milling process and improves the accuracy of the milling process; the valve body 1 blank can be milled relatively quickly by the alternating actions of the tool movement mechanism and the feed mechanism.

[0066] In another embodiment of the present invention, the clamping mechanism includes a bidirectional screw column 3 rotatably installed in the chassis 2 , both ends of the bidirectional screw column 3 are threadedly connected to an internal threaded slider 4 , and the internal threaded slider 4 is connected to the clamping slider 5 .

[0067] Taking the embodiment combining all the features recorded in this application as an example, when in use, one end of the bidirectional screw column 3 is connected to the driving mechanism in the chassis 2. When the bidirectional screw column 3 rotates, the internal threaded slider 4 will be driven to move along the length direction of the bidirectional screw column 3 through threaded cooperation, thereby driving the clamping slider 5 to move closer to or away from each other in the clamping groove 202, thereby driving the ejector pin 6 to move, so that the ejector pin 6 can clamp or release the valve body 1 blank, which facilitates the subsequent milling process and improves the accuracy of the milling process.

[0068] In another embodiment of the present invention, the feed mechanism includes a cylinder push rod 7 slidably installed in the chassis 2, a mounting bracket 8 is installed on the cylinder push rod 7, a guide rod 801 is installed on the mounting bracket 8, a first progressive plate 9 and a second progressive plate 10 are slidably installed on the guide rod 801, and the first progressive plate 9 is close to the mounting bracket 8, a telescopic column 901 is installed on the first progressive plate 9, a telescopic sleeve 1001 that slides and engages with the telescopic column 901 is installed on the second progressive plate 10, and a spring 15 connected to the telescopic column 901 is installed in the telescopic sleeve 1001; a limit block 802 that interferes with the second progressive plate 10 is installed on the end of the guide rod 801 away from the mounting bracket 8.

[0069] In another embodiment of the present invention, the feed mechanism further includes an adjusting screw 16 rotatably mounted on the mounting frame 8 , and an internally threaded sleeve 902 threadedly connected to the adjusting screw 16 is mounted on the first progressive plate 9 .

[0070] Taking the embodiment combining all the features recorded in this application as an example, when in use, for some larger-scale processing enterprises or enterprises with strict production specifications, before processing the valve body 1 blank, they often first conduct a series of experiments on the valve body 1 blank to obtain relevant data such as the hardness of the blank. Subsequent debugging personnel will make corresponding adjustments to the processing machine based on the obtained data (such as adjusting the feed rate, the feed rate and the milling cutter speed, etc.) to ensure that there will be no tool damage or low processing efficiency problems during the processing; and for some smaller-scale enterprises or enterprises with relatively loose production specifications, most of the time, simple adjustments to the machine are made based on the experience of the operators and debugging personnel during processing, and there will often be problems of low production efficiency such as the blank material being too hard and the feed pressure being too high resulting in a high damage rate of the milling cutter, or the material hardness being low and the feed pressure being too low resulting in reduced production efficiency.

[0071] The cylinder push rod 7 is connected to the cylinder provided in the chassis 2. After the clamping mechanism drives the ejector pin 6 to clamp the valve body 1 blank, the cylinder push rod 7 is pushed by the cylinder to slide toward the ejector pin 6, thereby pushing the mounting frame 8 to move synchronously.

[0072] In the initial state, the spring 15 is in a compressed state, and its compression amount is small (the small elastic force can only overcome the resistance of the displacement of the progressive block 11). When the cylinder push rod 7 moves, the adjusting screw 16 is driven to rotate by the motor, and the internal threaded sleeve 902 is driven to move toward the second progressive plate 10 through threaded cooperation, thereby reducing the distance between the first progressive plate 9 and the second progressive plate 10; in the process of reducing the distance, the telescopic column 901 will slide inward in the telescopic sleeve 1001, thereby further compressing the spring 15, so that the elastic force becomes larger; and when the adjusting screw 16 drives the internal threaded sleeve 902 to move to the maximum stroke, the deformation of the spring 15 is the largest, and the spring 15 has the performance of being compressed.

[0073] During the movement of the mounting frame 8 toward the ejector pin 6, the threaded engagement between the adjusting screw 16 and the internal threaded sleeve 902 will drive the first progressive plate 9 to move synchronously, and the second progressive plate 10 to move synchronously through the spring 15, thereby driving the progressive block 11 to move toward the ejector pin 6 in the feed groove 203, and driving the tool holder 13 to move toward the clamped blank through the mounting plate 12. During the movement, the milling cutter on the tool holder 13 will mill a hole in the blank.

[0074] When the material hardness of the stock is relatively small, the thrust of the cylinder push rod 7 to the tool holder 13 is able to overcome the resistance of the milling cutter to the milling hole. That is, the situation that the hardness is small and the feed speed is too slow is avoided, and the production efficiency is not reduced.

[0075] In another embodiment of the present invention, the tool feeding mechanism includes a guide protrusion 1201 installed on the mounting plate 12, and the tool holder 13 is slidingly engaged with the guide protrusion 1201; a tool feeding screw 14 threadedly connected to the tool holder 13 is rotatably installed on the mounting plate 12.

[0076] Taking the embodiment combining all the features recorded in this application as an example, when in use, after the feed mechanism drives the milling cutter to mill holes in the blank, the motor drives the feed screw 14 to rotate, and the threaded engagement drives the tool holder 13 to move along the length direction of the feed screw 14. The relative displacement is the length of the limit groove 101. During the movement, the tool holder 13 will slide and engage with the guide protrusion 1201, and the guide protrusion 1201 can increase the resistance of the tool holder 13 to rotation along the axis of the feed screw 14, thereby preventing the tool holder 13 from deflecting due to excessive feed speed.

[0077] The valve body 1 blank is clamped and positioned by the clamping mechanism driving the ejector pin 6 to clamp the blank, which facilitates the subsequent milling process and improves the accuracy of the milling process; the valve body 1 blank can be milled relatively quickly by the alternating actions of the tool movement mechanism and the feed mechanism.

[0078] A method for forming a diesel engine valve with a circumferentially heterogeneous surface using the above-mentioned forming device comprises the following steps:

[0079] Step 1: Install the milling cutter on the tool holder 13; start the clamping mechanism, and drive the ejector pins 6 to move closer to each other through the action of the clamping mechanism, so that the ejector pins 6 are matched with the positioning holes 103 on the valve body 1 blank, and the valve body 1 blank is clamped by the ejector pins 6 with the spacing being continuously reduced; start the motor on the tool holder 13 to rotate the milling cutter at high speed;

[0080] The second step: start the feed mechanism; the feed mechanism drives the tool holder 13 to approach the valve body 1 blank. During the approach, the valve body 1 is milled by the high-speed rotating milling cutter until the hole depth reaches the design requirement.

[0081] Step 3: Start the tool feeding mechanism, and drive the tool holder 13 to move along the length direction of the valve body 1 through the tool feeding mechanism, so as to drive the high-speed rotating milling cutter to mill the valve body 1 to mill out the limit groove 101;

[0082] Step 4: Remove the finished valve body 1 and replace it with another valve body 1 blank.

[0083] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0084] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A circumferentially heterogeneous diesel engine valve, comprising a valve body (1); a connecting post (102) is mounted on the valve body (1); and positioning holes (103) are provided on both the connecting post (102) and the valve body (1); It is characterized in that The valve body (1) is provided with a limiting structure for limiting the rotation of the valve body (1).

2. A diesel engine valve with circumferentially heterogeneous surfaces according to claim 1, characterized in that: The limiting structure comprises a limiting groove (101) symmetrically arranged on the valve body (1) along the length direction of the valve body (1).

3. A molding device for a circumferentially heterogeneous surface diesel engine valve according to claim 2, comprising a chassis (2), a workbench (201) mounted on the chassis (2); a clamping groove (202) symmetrically provided in the longitudinal direction of the workbench (201), and a feed groove (203) symmetrically provided in the transverse direction of the workbench (201); It is characterized in that A clamping slider (5) is slidably engaged in the clamping groove (202), and a ejector pin (6) is installed on the opposite side of the two clamping sliders (5); a clamping mechanism connected to the clamping sliders (5) is provided on the chassis (2), and the clamping mechanism can drive the clamping sliders (5) to move closer to each other to reduce the spacing between the ejector pins (6); A progressive block (11) is slidably engaged in the feed groove (203), and a mounting plate (12) is mounted on the progressive block (11); a tool holder (13) is provided on the mounting plate (12); the tool holder (13) is used to fix and drive the milling cutter to rotate at high speed; feed mechanisms connected to the progressive block (11) are provided on both lateral sides of the chassis (2), and the feed mechanisms can drive the progressive block (11) close to the ejector pin (6), so as to drive the tool holder (13) close to the ejector pin (6) through the mounting plate (12); A tool feeding mechanism is also provided on the mounting plate (12), and the tool feeding mechanism can drive the tool holder (13) to move along the length direction of the ejector pin (6).

4. The molding device for a diesel engine valve with a circumferentially heterogeneous surface according to claim 3, characterized in that: The clamping mechanism comprises a bidirectional screw column (3) rotatably mounted in the chassis (2), both ends of the bidirectional screw column (3) being threadedly connected to an internal thread slider (4), and the internal thread slider (4) is connected to the clamping slider (5).

5. The molding device for a diesel engine valve with a circumferentially heterogeneous surface according to claim 4, characterized in that: The feed mechanism includes a cylinder push rod (7) slidably mounted in the chassis (2), a mounting frame (8) is mounted on the cylinder push rod (7), a guide rod (801) is mounted on the mounting frame (8), a first progressive plate (9) and a second progressive plate (10) are slidably mounted on the guide rod (801), and the first progressive plate (9) is close to the mounting frame (8), a telescopic column (901) is mounted on the first progressive plate (9), a telescopic sleeve (1001) slidably engaged with the telescopic column (901) is mounted on the second progressive plate (10), and a spring (15) connected to the telescopic column (901) is mounted in the telescopic sleeve (1001); a limit block (802) that contacts the second progressive plate (10) is mounted on the end of the guide rod (801) away from the mounting frame (8).

6. The molding device for a diesel engine valve with a circumferentially heterogeneous surface according to claim 5, characterized in that: The feed mechanism further comprises an adjusting screw (16) rotatably mounted on the mounting frame (8), and an internal threaded sleeve (902) threadedly connected to the adjusting screw (16) is mounted on the first progressive plate (9).

7. The molding device for a diesel engine valve with a circumferentially heterogeneous surface according to claim 6, characterized in that: The tool feeding mechanism comprises a guide protrusion (1201) mounted on the mounting plate (12), and the tool holder (13) is slidably engaged with the guide protrusion (1201); a tool feeding screw rod (14) threadedly connected to the tool holder (13) is rotatably mounted on the mounting plate (12).

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