Lubricating structure of high-pressure die-casting punch
By setting lubrication channels, lubrication transition channels and filling grooves in the lubrication structure of the high-pressure die-cast punch, the problems of uneven lubrication and difficult to control the amount during the high-pressure die-casting process are solved, and effective control and uniform distribution of lubricating oil is achieved, reducing waste and environmental pollution.
Patent Information
- Application Number
- CN202411948981.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-03-21
AI Technical Summary
During the high-pressure light alloy die casting process, the friction between the punch and the pressure chamber and the high-pressure contact between the aluminum metal leads to uneven lubrication, and conventional lubrication methods are difficult to control the amount of lubricating oil, resulting in waste and environmental pollution.
A lubricating structure of a high-pressure die-cast punch is designed, including setting a lubrication channel and a lubrication transition channel between the press rod and the punch, and setting a plurality of annular filling grooves and punch rings on the outer side wall of the punch, so as to achieve uniform distribution and effective control of lubricating oil through the penetration and seepage gap.
It realizes effective control of lubricant usage, reduces waste and environmental pollution, and ensures uniform lubrication of punches, extends the service life of the equipment.
Smart Images
Figure CN119657878A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of die casting, in particular to a lubrication structure of a high-pressure die casting punch. Background Art
[0002] In the high-pressure light alloy die-casting process, the punch will rub against the pressure chamber once and come into contact with the high-pressure aluminum liquid once every time it is shot. Therefore, in order to ensure the stable operation of the injection mechanism, it is necessary to add a lubricating medium between the punch and the pressure chamber. The conventional practice is to drip or spray the lubricating medium on the outer surface of the punch. The lubricating medium flows along the outer wall of the punch under the action of gravity to achieve lubrication. This method is difficult to control the amount of lubricating medium, and the consumption of lubricating medium is large, resulting in waste. Especially spraying, it will also cause great pollution to the surrounding environment, and the atomized lubricating oil is easy to cause inhalation by the die-casting operators, which will also have a certain impact on the health of related personnel. In addition, this method also has the problem of uneven lubrication. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a lubrication structure for a high-pressure die-casting punch which has a simple structure and can reasonably control the amount of lubricating oil and achieve uniform lubrication.
[0004] The technical solution adopted by the present invention to solve the above technical problems is: A lubrication structure for a high-pressure die-casting punch, comprising a shot rod and a punch, wherein the punch is mounted on the end of the shot rod, and is characterized in that a first lubrication channel is provided inside the shot rod, a second lubrication channel is provided inside the punch, the first lubrication channel is connected to the second lubrication channel, a lubrication oil inlet connected to the first lubrication channel is provided on the shot rod, and a lubrication oil outlet connected to the second lubrication channel is provided on the side wall of the punch; A plurality of annular filling grooves for filling lubricating oil are axially spaced apart on the outer wall of the punch, a plurality of punch rings are axially sleeved and installed on the outside of the punch, the plurality of punch rings cover the filling grooves, a permeation gap is provided between the inner wall of the punch ring and the outer wall of the punch, the plurality of punch rings are axially fitted and connected, and a seepage gap is formed at the connection between adjacent punch rings.
[0005] An annular elastic support ring is embedded in each of the filling grooves. The elastic support ring is arranged between the punch and the punch ring to form the penetration gap for the lubricating oil to flow.
[0006] The punch and the injection rod are detachably connected via a connecting rod, and a lubrication transition channel for connecting the first lubrication channel and the second lubrication channel is arranged in the connecting rod.
[0007] A first sealing connection sleeve is provided at the joint between the first lubrication channel and the lubrication transition channel, and the first sealing connection sleeve has a first connection channel for connecting the first lubrication channel and the lubrication transition channel, and the first lubrication channel and the lubrication transition channel are connected through the first connection channel; A second sealing connection sleeve is provided at the joint between the second lubrication channel and the lubrication transition channel. The second sealing connection sleeve has a second connecting channel for connecting the second lubrication channel and the lubrication transition channel. The second lubrication channel and the lubrication transition channel are connected through the second connecting channel.
[0008] A first limiting protrusion is arranged on the punch, a second limiting protrusion is arranged on the connecting rod, and multiple punch rings are limitedly arranged between the first limiting protrusion and the second limiting protrusion. A seepage gap is arranged between the punch ring close to the first limiting protrusion and the first limiting protrusion, and a seepage gap is arranged between the punch ring close to the second protrusion and the second limiting protrusion.
[0009] Two lubricating oil outlets are arranged at intervals on the side wall of the punch, and the two lubricating oil outlets are arranged in the filling groove.
[0010] There are two punch rings, and the seepage gap formed between the two punch rings is arranged between the two lubricating oil outlets.
[0011] The butt ends of the adjacent punch rings are provided with a slope surface for the transition of the leaked lubricating oil, and the two slope surfaces are in a V shape when butt-jointed.
[0012] Compared with the prior art, the advantages of the present invention are: simple structure, lubricating oil enters the injection rod from the lubricating oil inlet, enters the second lubricating channel arranged in the punch along the first lubricating channel arranged in the injection rod, and flows out through the lubricating oil outlet arranged on the side of the punch, and slowly fills each filling groove through the penetration gap, and then seeps outward through the seepage gap. This structure can effectively control the amount of lubricating oil according to the specific lubrication situation, avoid waste, and also reduce pollution to the environment; each part of the seepage gap has corresponding lubricating oil seepage, which is equivalent to the entire circle of the punch ring, and then the seeped lubricating oil during the activity of the punch can be relatively completely lubricated along the axial direction to achieve uniform lubrication. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a cross-sectional structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point B in the middle. DETAILED DESCRIPTION
[0014] The present invention is further described in detail below with reference to the accompanying drawings.
[0015] As shown in the figure, a lubrication structure of a high-pressure die-casting punch comprises a shot rod 1 and a punch 2, wherein the punch 2 is mounted on the end of the shot rod 1, the shot rod 1 has a first lubrication channel 11 inside, the punch 2 is provided with a second lubrication channel 21 inside, the first lubrication channel 11 is connected to the second lubrication channel 21, the shot rod 1 is provided with a lubrication oil inlet 12 connected to the first lubrication channel 11, and the side wall of the punch 2 is provided with a lubrication oil outlet 22 connected to the second lubrication channel 21; A plurality of annular filling grooves 20 for filling lubricating oil are axially spaced apart on the outer wall of the punch 2. A plurality of punch rings 6 are axially sleeved and installed on the outside of the punch 2. The plurality of punch rings 6 cover the filling grooves 20. A permeation gap (not marked in the figure) is provided between the inner wall of the punch ring 6 and the outer wall of the punch 2. The plurality of punch rings 6 are axially fitted and connected to each other, and a seepage gap 61 is formed at the connection between adjacent punch rings 6.
[0016] In this specific embodiment, an annular elastic support ring 200 is embedded in each filling groove 20, and the elastic support ring 200 is arranged between the punch 2 and the punch ring 6 to form a permeable gap for the flow of lubricating oil. The punch ring 6 is supported by the elastic support ring 200, so that there is a sufficient gap between the punch 2 and the punch ring 6 for the flow of lubricating oil. At the same time, the opposing force formed by the elastic support ring 200 and the punch ring 6 ensures that the punch ring 6 can be closely matched with the pressure chamber of the barrel during use.
[0017] In this specific embodiment, in order to improve versatility and replaceability, the punch 2 and the injection rod 1 are detachably connected via a connecting rod 3, and a lubrication transition channel 31 for connecting the first lubrication channel 11 and the second lubrication channel 21 is provided in the connecting rod 3.
[0018] In this specific embodiment, in order to avoid the loss of lubricating oil due to internal leakage, a first sealing connection sleeve 4 is arranged at the joint of the first lubricating channel 11 and the lubricating transition channel 31. The first sealing connection sleeve 4 has a first connecting channel 41 for connecting the first lubricating channel 11 and the lubricating transition channel 31, so that the first lubricating channel 11 and the lubricating transition channel 31 are connected through the first connecting channel 41; at the same time, a second sealing connection sleeve 5 is arranged at the joint of the second lubricating channel 21 and the lubricating transition channel 31. The second sealing connection sleeve 5 has a second connecting channel 51 for connecting the second lubricating channel 21 and the lubricating transition channel 31, and the second lubricating channel 21 and the lubricating transition channel 31 are connected through the second connecting channel 51.
[0019] In this specific embodiment, the first sealing connection sleeve 4 and the second sealing connection sleeve 5 are both sealing copper sleeves. The copper sleeves are corrosion-resistant and have excellent thermal conductivity, are suitable for harsh environments, and effectively dissipate heat at high temperatures. They have good processability, are easy to manufacture with precise dimensions, and have stable sealing effects after installation.
[0020] In this specific embodiment, in order to achieve stable installation of the punch ring 6 on the punch 2, a first limiting protrusion 23 is provided on the punch 2, and a second limiting protrusion 32 is provided on the connecting rod 3, and multiple punch rings 6 are limitedly set between the first limiting protrusion 23 and the second limiting protrusion 32.
[0021] In this specific embodiment, in order to achieve lubrication of the surface of the punch ring 6 more quickly, a seepage gap is also provided between the punch ring 6 that is abutted against the first limiting protrusion 23 and the first limiting protrusion 23, and a seepage gap is provided between the punch ring 6 that is abutted against the second protrusion and the second limiting protrusion 32.
[0022] In this specific embodiment, two lubricating oil outlets 22 are arranged at intervals on the side wall of the punch 2, and the two lubricating oil outlets 22 are arranged in the filling groove 20. The lubricating oil can fill the entire filling groove 20 more quickly and seep out more quickly to form lubrication protection.
[0023] In this specific embodiment, there are two punch rings 6, and the seepage gap 61 formed between the two punch rings 6 is arranged between the two lubricating oil outlets 22. This enables the lubricating oil to seep out faster to form lubrication protection for the punch rings 6.
[0024] In this specific embodiment, the butt ends of adjacent punch rings 6 have a slope surface 62 for the lubricating oil to transfer, and the two slope surfaces 62 are V-shaped after butt connection, so that the lubricating oil can cover the outer surface of the entire punch ring 6 more quickly.
Claims
1. A lubrication structure for a high-pressure die-casting punch, comprising a shot rod and a punch, wherein the punch is mounted on the end of the shot rod, and is characterized in that The injection rod has a first lubricating channel inside, the punch has a second lubricating channel inside, the first lubricating channel is connected to the second lubricating channel, the injection rod is provided with a lubricating oil inlet connected to the first lubricating channel, and the side wall of the punch is provided with a lubricating oil outlet connected to the second lubricating channel; A plurality of annular filling grooves for filling lubricating oil are axially spaced apart on the outer wall of the punch, a plurality of punch rings are axially sleeved and installed on the outside of the punch, the plurality of punch rings cover the filling grooves, a permeation gap is provided between the inner wall of the punch ring and the outer wall of the punch, the plurality of punch rings are axially fitted and connected, and a seepage gap is formed at the connection between adjacent punch rings.
2. A lubrication structure for a high pressure die casting punch as claimed in claim 1, characterized in that An annular elastic support ring is embedded in each of the filling grooves. The elastic support ring is arranged between the punch and the punch ring to form the penetration gap for the lubricating oil to flow.
3. A lubrication structure for a high pressure die casting punch as claimed in claim 1, characterized in that The punch and the injection rod are detachably connected via a connecting rod, and a lubrication transition channel for connecting the first lubrication channel and the second lubrication channel is arranged in the connecting rod.
4. A lubrication structure for a high pressure die casting punch as claimed in claim 3, characterized in that A first sealing connection sleeve is provided at the joint between the first lubrication channel and the lubrication transition channel, and the first sealing connection sleeve has a first connecting channel for connecting the first lubrication channel and the lubrication transition channel, and the first lubrication channel and the lubrication transition channel are connected through the first connecting channel; A second sealing connection sleeve is provided at the joint between the second lubrication channel and the lubrication transition channel. The second sealing connection sleeve has a second connection channel for connecting the second lubrication channel and the lubrication transition channel. The second lubrication channel and the lubrication transition channel are connected through the second connection channel.
5. A lubrication structure for a high pressure die casting punch as claimed in claim 3, characterized in that A first limiting protrusion is arranged on the punch, a second limiting protrusion is arranged on the connecting rod, and multiple punch rings are limitedly arranged between the first limiting protrusion and the second limiting protrusion. A seepage gap is arranged between the punch ring close to the first limiting protrusion and the first limiting protrusion, and a seepage gap is arranged between the punch ring close to the second protrusion and the second limiting protrusion.
6. A lubrication structure for a high pressure die casting punch as claimed in claim 1, characterized in that Two lubricating oil outlets are arranged at intervals on the side wall of the punch, and the two lubricating oil outlets are arranged in the filling groove.
7. A lubrication structure for a high pressure die casting punch as claimed in claim 6, characterized in that There are two punch rings, and the seepage gap formed between the two punch rings is arranged between the two lubricating oil outlets.
8. A lubrication structure for a high pressure die casting punch as claimed in claim 1, characterized in that The butt ends of the adjacent punch rings are provided with a slope surface for the transition of the leaked lubricating oil, and the two slope surfaces are in a V shape when butt-jointed.