Self-lubricating nut machining cold header and working method thereof

Abstract

The invention relates to the technical field of nut machining, and particularly discloses a self-lubricating nut machining cold header and a working method thereof.The cold header comprises a base, a rack fixed to the surface of the base, an upsetting die assembly and a clamp assembly, and the upsetting die assembly and the clamp assembly are arranged in the rack; the eccentric wheel is rotationally mounted on the left side of the interior of the rack, the end of the eccentric wheel is connected with a main shaft, and the main shaft is in transmission connection with the driving motor through a transmission belt; the left side of the upsetting die assembly is rotationally connected with the first transmission arm, and the top end of the first transmission arm is rotationally connected to the outer side of the eccentric wheel; and the feeding assembly is arranged on the outer side of the right end of the rack. According to the self-lubricating cold header for nut machining and the working method of the self-lubricating cold header, lubricating can be automatically carried out, damage to the heading die is reduced, the working efficiency is improved, meanwhile, flushing is convenient, lubricating oil is recycled, and the subsequent working requirement of the nut is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading processing, and more particularly to the technical field of cold heading processing for nut processing, and in particular to a self-lubricating cold heading machine for nut processing and a working method thereof. Background Art

[0002] Cold heading machines are specialized equipment used for mass production of nuts, bolts and other fasteners. Cold heading machines use cold heading to forge the heads of bolts and screws, which can minimize cutting work and directly form them into the required shape and size. This can not only save a lot of materials, but also greatly improve production efficiency and significantly improve the mechanical strength of the forged parts. For example, the invention with the authorization announcement number CN 110695284 B relates to a cold heading machine, wherein the mold clamping device includes a driving shaft, a first transmission sleeve, a second transmission sleeve, a first linkage mechanism and a second linkage mechanism, the first transmission sleeve and the second transmission sleeve are respectively sleeved on the outer circumference of the driving shaft, the first transmission sleeve and the cold heading molds except the last one are respectively provided with a first rocker arm for driving the front mold to close the mold, the second transmission sleeve and the last cold heading mold are respectively provided with a second rocker arm for driving the front mold to close the mold, the first linkage mechanism and the second linkage mechanism are respectively located at the two ends of the frame relative to the driving shaft, and respectively drive the first rocker arm and the second rocker arm from both sides to reciprocate at different times. By adopting the above scheme, the present invention provides a cold heading machine with a more streamlined and compact driving structure; However, combined with the actual use of the cold heading machine, it is found that in order to reduce the large amount of friction between the heading die and the nut material during the cold heading of the nut, and to ensure that the heading die quickly enters the nut material, lubrication is required to reduce the damage of the heading die. However, in actual work, it is not convenient to add lubricating oil quickly, and the heading die frequently reciprocates during work, which makes the lubricating oil consumption fast, which is not conducive to ensuring the efficiency of cold heading. Therefore, we propose a self-lubricating cold heading machine for nut processing and a working method thereof, so as to solve the above-mentioned problems. Summary of the invention

[0003] The object of the present invention is to provide a self-lubricating cold heading machine for nut processing and a working method thereof, so as to solve the problem raised in the above-mentioned background technology that during the current cold heading of nuts, in order to reduce a large amount of friction between the heading die and the nut material, and at the same time to ensure that the heading die quickly enters the nut material, lubrication is required to reduce damage to the heading die, but in actual operation, it is not convenient to add lubricating oil quickly, and the heading die frequently moves back and forth during operation, which makes the lubricating oil consumption fast, which is not conducive to ensuring the efficiency of cold heading work.

[0004] To achieve the above object, the present invention provides the following technical solution: a self-lubricating cold heading machine for nut processing, comprising: a base, a frame fixed on the surface of the base, and a heading die assembly and a clamp assembly arranged inside the frame; Also includes: An eccentric wheel is rotatably mounted on the left side of the frame, and the end of the eccentric wheel is connected to a main shaft, and the main shaft is transmission-connected to a driving motor through a transmission belt; A first transmission arm, the left side of the upsetting die assembly is rotatably connected to the first transmission arm, and the top end of the first transmission arm is rotatably connected to the outer side of the eccentric wheel; A feeding assembly, which is arranged outside the right end of the frame, and a cutting assembly located between the upsetting die assembly and the clamp assembly is arranged on the rear side of the frame; A discharge barrel, which is arranged at the middle of the front side of the frame and is located between the upsetting die assembly and the clamp assembly; A receiving barrel, the top of which is connected to the bottom of the discharging barrel, and a partition below the discharging barrel is provided inside the receiving barrel, and a first filter screen is integrally connected to the top of the partition; A static tank, the static tank is connected to the rear side of the top end of the receiving barrel, and the top of the static tank is connected to the oil tank located above the shell; A fixed pipe is fixed to the bottom end of the oil tank, and the bottom of the fixed pipe is connected to an oil filling pipe.

[0005] Preferably, an extrusion wheel is installed on the outer side of the rear end of the main shaft, and a first swing arm is provided on the outer side of the extrusion wheel. The first swing arm is rotatably connected to the outer side of the frame, and the top end of the first swing arm is in contact with the extrusion wheel.

[0006] Preferably, a feeding rod is connected to the bottom end of the first swing arm, and the top end of the feeding rod is slidably connected to the first swing arm. The feeding rod forms a left-right sliding structure on the rear side of the frame, and a feeding arm is hinged at the end of the feeding rod. A transmission wheel is connected to the top end of the feeding arm, and a feeding assembly is connected to the front side of the feeding arm.

[0007] Preferably, a second transmission arm is connected to the outer side of the cutting assembly, and the top end of the second transmission arm is hinged to the end of the main shaft.

[0008] Preferably, the front end of the eccentric wheel is connected to a third transmission arm, and the end of the third transmission arm is hinged with a rear ejecting device, and the bottom end of the rear ejecting device is rotatably connected to the right side of the frame.

[0009] Preferably, the receiving barrel is connected to the static tank through a pump, and a second filter is fixed inside the static tank, and a water outlet is opened at the bottom end of the static tank, and the pump is connected to the water outlet to input water into the connecting port.

[0010] Preferably, the oil tank is connected to the static tank through a pump, and the oil tank is used to contain lubricating oil, and the oil filling pipe arranged at the bottom of the oil tank is arranged corresponding to the internal upsetting die of the upsetting die assembly.

[0011] Preferably, a quantitative rod is rotatably mounted inside the fixed tube, and a connecting gear is fixedly mounted on the end of the quantitative rod, and a transmission rack is meshedly connected to the connecting gear.

[0012] Preferably, the transmission rack is slidably connected to the bottom surface of the oil tank, and a second swing arm is meshingly connected below the top end of the transmission rack, the middle part of the second swing arm is rotatably connected to the outside of the limit frame through a limit shaft, the bottom end of the second swing arm is slidably connected to a push rod, and the bottom end of the push rod is fixedly mounted on the surface of the upsetting die assembly.

[0013] The present invention provides another technical solution: a working method of a self-lubricating cold heading machine for nut processing, the working method comprising the following steps: Step 1: Insert the nut cold heading raw material into the feeding assembly for feeding; Step 2: The main shaft is driven to rotate by a driving motor, which drives the eccentric wheel to rotate eccentrically, thereby driving the first transmission arm to reciprocate inside the frame, so that the upsetting die assembly can slide back and forth left and right; Step 3: By rotating the main shaft, the extrusion wheel is driven to rotate eccentrically, so that the extrusion wheel reciprocates against the first swing arm, so that the feeding rod slides reciprocatingly, driving the feeding arm to swing, thereby driving the internal gear of the feeding assembly to rotate for feeding; Step 4: The rotation of the main shaft drives the second transmission arm to reciprocate, so that the cutting assembly cuts the nut cold heading raw material and clamps it through the clamp assembly. At the same time, the rotation of the main shaft drives the third transmission arm to reciprocate the rear ejection device, so that the rear ejection device hits the clamp assembly to move for material replacement, so as to facilitate cold heading when the upsetting die assembly slides; Step 5: When the upsetting die assembly slides back and forth, the second swing arm is rotated left and right by the push rod, so that the transmission rack slides back and forth, driving the connecting gear and the metering rod to rotate back and forth inside the fixed tube, so that the groove inside the metering rod rotates downward, so that the lubricating oil inside the groove drips onto the upsetting die through the oil injection pipe for automatic lubrication; Step 6: After the cold heading is completed, the nut is automatically discharged through the discharge barrel, enters the inside of the receiving barrel through the discharge barrel, and automatically falls on the surface of the first filter screen, and is rinsed with water through the connection port on the upper side of the first filter screen, so that the lubricating oil on the surface of the nut falls off, and the nut is rolled out through the tilting mechanism of the first filter screen and the partition; Step 7: The mixed liquid of water and lubricating oil after spraying enters the bottom of the receiving barrel, and is input into the standing tank through the pump, filtered and stood, and the upper layer of lubricating oil is input into the oil tank for recycling through the pump.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: the self-lubricating cold heading machine for nut processing and the working method thereof can automatically lubricate, reduce the damage of the heading die, and help improve the working efficiency, and at the same time facilitate flushing, so that the lubricating oil can be recycled, and the subsequent work requirements of the nut can be reduced; 1. In this scheme, an oil tank, a fixed pipe and an oil injection pipe are provided. The bottom of the oil tank is connected with a fixed pipe. Through the connection between the oil injection pipe and the fixed pipe, the lubricating oil inside the oil tank is dripped onto the upsetting die through the oil injection pipe, so as to quickly add the lubricating oil; 2. In this scheme, a second swing arm, a push rod, a transmission rack, a connecting gear and a metering rod are provided. Through the reciprocating movement of the upsetting die assembly, the upsetting die assembly drives the second swing arm to reciprocate through the push rod, so that the second swing arm pushes the transmission rack reciprocatingly. Through the meshing between the transmission rack and the connecting gear, the metering rod rotates inside the fixed tube, so that the lubricating oil inside the oil tank falls quantitatively through the rotation of the metering rod, and falls when the upsetting die assembly moves, so that the lubricating oil can be repeatedly dripped during each cold upsetting, which is convenient for maintenance; 3. In this scheme, a receiving barrel and a standing tank are provided. The nuts that have been cold headed fall into the inside of the receiving barrel through the discharging barrel, and the nuts fall onto the surface of the first filter screen. Water is introduced through the connecting port to rinse the nuts, so as to clean the lubricating oil on the surface of the nuts. At the same time, the water-oil mixture is input into the standing tank through a pump, and can be filtered and stood, so that the lubricating oil is input into the oil tank through the pump for recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall front view structure of the frame of the present invention; Figure 3 It is a schematic diagram of the overall rear view structure of the frame of the present invention; Figure 4 It is a schematic diagram of the overall back side structure of the frame of the present invention when viewed from above; Figure 5 It is a schematic diagram of the overall middle section structure of the present invention; Figure 6 It is a schematic diagram of the cross-section structure of the material receiving barrel of the present invention; Figure 7 It is a schematic diagram of the overall bottom view of the oil tank of the present invention; Figure 8It is a schematic diagram of the cutaway structure of the oil tank of the present invention; Fig. 9 It is a schematic diagram of the overall structure of the quantitative rod of the present invention.

[0016] In the figure: 1. base; 2. shell; 3. frame; 4. eccentric wheel; 5. main shaft; 6. driving motor; 7. transmission belt; 8. first transmission arm; 9. upsetting die assembly; 10. limit frame; 11. extrusion wheel; 12. first swing arm; 13. feeding rod; 14. feeding arm; 15. transmission wheel; 16. feeding assembly; 17. second transmission arm; 18. cutting assembly; 19. third transmission arm; 20. rear ejecting device; 21. fixture assembly; 22. discharging barrel; 23. receiving barrel; 24. partition; 25. first filter screen; 26. standing tank; 27. second filter screen; 28. oil tank; 29. ​​connecting port; 30. fixing pipe; 31. oil filling pipe; 32. quantitative rod; 33. connecting gear; 34. transmission rack; 35. second swing arm; 36. limit shaft; 37. push rod. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0018] See also Figure 1-9 , the present invention provides the following technical solutions: A self-lubricating cold heading machine for nut processing comprises: a base 1, a shell 2, a frame 3, an eccentric wheel 4, a main shaft 5, a driving motor 6, a transmission belt 7, a first transmission arm 8, a heading die assembly 9, a limiting frame 10, an extrusion wheel 11, a first swing arm 12, a feeding rod 13, a feeding arm 14, a transmission wheel 15, a feeding assembly 16, a second transmission arm 17, a cutting assembly 18, a third transmission arm 19, a rear ejecting device 20, a clamp assembly 21, a discharging barrel 22, a receiving barrel 23, a partition 24, a first filter screen 25, a static tank 26, a second filter screen 27, an oil tank 28, a connecting port 29, a fixing pipe 30, an oil filling pipe 31, a quantitative rod 32, a connecting gear 33, a transmission rack 34, a second swing arm 35, a limiting shaft 36 and a push rod 37; Among them, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5In the embodiment, the frame 3 is fixed on the surface of the base 1, the upsetting die assembly 9 and the clamp assembly 21 are arranged inside the frame 3, the eccentric wheel 4 is rotatably installed on the left side inside the frame 3, and the end of the eccentric wheel 4 is connected with the main shaft 5, and the main shaft 5 is connected to the driving motor 6 through the transmission belt 7, the left side of the upsetting die assembly 9 is rotatably connected with the first transmission arm 8, and the top end of the first transmission arm 8 is rotatably connected to the outside of the eccentric wheel 4, the feeding assembly 16 is arranged on the outside of the right end of the frame 3, and the rear side of the frame 3 is provided with a cutting assembly 18 located between the upsetting die assembly 9 and the clamp assembly 21, and the discharging cylinder 22 is arranged in the middle of the front side of the frame 3, and the discharging cylinder 22 is located between the upsetting die assembly 9 and the clamp assembly 21; An extrusion wheel 11 is installed on the outer side of the rear end of the main shaft 5, and a first swing arm 12 is arranged on the outer side of the extrusion wheel 11. The first swing arm 12 is rotatably connected to the outer side of the frame 3, and the top end of the first swing arm 12 is in contact with the extrusion wheel 11. The bottom end of the first swing arm 12 is connected to a feeding rod 13, and the top end of the feeding rod 13 is slidably connected to the first swing arm 12. The feeding rod 13 forms a left-right sliding structure on the rear side of the frame 3. A feeding arm 14 is hinged at the end of the feeding rod 13, a transmission wheel 15 is connected to the top end of the feeding arm 14, and a feeding assembly 16 is connected to the front side of the feeding arm 14.

[0019] The outer side of the cutting assembly 18 is connected to a second transmission arm 17, and the top end of the second transmission arm 17 is hinged to the end of the main shaft 5. The front end of the eccentric wheel 4 is connected to a third transmission arm 19, and the end of the third transmission arm 19 is hinged to a rear ejecting device 20, and the bottom end of the rear ejecting device 20 is rotatably connected to the right side of the frame 3. In a specific application scenario, when cold heading of nuts is performed, the nut cold heading raw materials are inserted into the loading device through the feeding assembly 16, and the main shaft 5 is driven by connecting the transmission belt 7 through the driving motor 6, so that the eccentric wheel 4 can rotate at the same time, and then drive the first transmission arm 8, the first swing arm 12, the second transmission arm 17 and the third transmission arm 19 to move at the same time, thereby realizing automatic loading, cutting, clamping, cold heading and other operations to ensure normal cold heading processing of the nuts.

[0020] Among them, Figure 2 and Figure 6 In the embodiment, the top of the receiving barrel 23 is connected with the bottom of the discharging barrel 22, and a partition 24 located below the discharging barrel 22 is provided inside the receiving barrel 23, and a first filter screen 25 is integrally connected to the top of the partition 24, a stationary tank 26 is connected to the rear side of the top of the receiving barrel 23, and the top of the stationary tank 26 is connected with the oil tank 28 located above the outer shell 2; the receiving barrel 23 is connected with the stationary tank 26 through a pump, and a second filter screen 27 is fixed inside the stationary tank 26, and a water outlet is provided at the bottom of the stationary tank 26, and water is input into the connection port 29 through the water outlet connected to the pump; In a specific application scenario, after cold heading, the nuts produced automatically enter the discharge barrel 22 through the discharge port, slide into the interior of the receiving barrel 23 through the inclined setting of the discharge barrel 22, and the nuts entering the receiving barrel 23 automatically fall onto the surface of the first filter screen 25 connected to the top of the partition 24. At the same time, the connection port 29 opened at the top of the receiving barrel 23 is connected to the water inlet pipe to rinse the nuts on the surface of the first filter screen 25, so that the lubricating oil on the surface of the nuts is washed down, and the first filter screen 25 and the partition 24 are inclined. The nuts slide down for easy collection, and the mixed liquid of flushing water and lubricating oil enters the enclosed space between the left side of the partition 24 and the receiving barrel 23 through the hollow structure of the first filter screen 25. At the same time, the mixed liquid is input into the interior of the standing tank 26 through the pump for easy standing. At the same time, a second filter screen 27 is fixed inside the standing tank 26, which can filter the lubricating oil above the second filter screen 27. The filtered water at the bottom of the standing tank 26 can be added to the nuts for flushing again through the water inlet pipe to carry out water circulation.

[0021] Among them, Figure 2 , Figure 7 , Figure 8 and Fig. 9 In the embodiment, a fixed pipe 30 is fixed to the bottom end of the oil tank 28, and an oil filling pipe 31 is connected to the bottom of the fixed pipe 30. The oil tank 28 is connected to the static tank 26 through a pump, and the oil tank 28 is used to contain lubricating oil, and the oil filling pipe 31 arranged at the bottom of the oil tank 28 is arranged corresponding to the internal upsetting die of the upsetting die assembly 9. A quantitative rod 32 is rotatably installed inside the fixed pipe 30, and a connecting gear 33 is fixedly installed at the end of the quantitative rod 32, and a transmission rack 34 is meshedly connected to the connecting gear 33. The transmission rack 34 is slidably connected to the bottom surface of the oil tank 28, and a second swing arm 35 is meshedly connected below the top end of the transmission rack 34. The middle part of the second swing arm 35 is rotatably connected to the outer side of the limit frame 10 through a limit shaft 36. A push rod 37 is slidably connected to the bottom end of the second swing arm 35, and the bottom end of the push rod 37 is fixedly installed on the surface of the upsetting die assembly 9. In a specific application scenario, the lubricating oil filtered by the second filter screen 27 inside the static tank 26 can be re-input into the oil tank 28 through a pump. When cold forging is performed, the reciprocating sliding of the forging die assembly 9 will cause the push rod 37 fixed on its surface to slide left and right. Since the push rod 37 is slidably connected to the bottom end of the second swing arm 35, when the push rod 37 slides left and right, the second swing arm 35 reciprocates left and right around the limit shaft 36 as the axis. When the second swing arm 35 rotates, the meshing connection between the second swing arm 35 and the transmission rack 34 causes the transmission rack 34 to rotate. The rack 34 slides left and right at the bottom of the oil tank 28. Since the transmission rack 34 is meshed with the connecting gear 33, the connecting gear 33 can be driven to rotate back and forth when the transmission rack 34 slides. The connecting gear 33 and the metering rod 32 are integrated into one structure, so that the metering rod 32 can reciprocate inside the fixed tube 30. The grooves on the surface of the metering rod 32 can be used to discharge the lubricating oil inside the fixed tube 30 in a quantitative manner through the downward rotation of the metering rod 32, so that the lubricating oil can be added each time the upsetting die assembly 9 performs sliding cold upsetting to ensure automatic lubrication.

[0022] The working method of the self-lubricating cold heading machine for nut processing comprises the following steps: Step 1: insert the nut cold heading raw material into the feeding assembly 16 for feeding; Step 2: The main shaft 5 is driven to rotate by the driving motor 6, which drives the eccentric wheel 4 to rotate eccentrically, thereby driving the first transmission arm 8 to reciprocate inside the frame 3, so that the upsetting die assembly 9 can slide back and forth left and right; Step 3: By rotating the main shaft 5, the extrusion wheel 11 is driven to rotate eccentrically, so that the extrusion wheel 11 reciprocates against the first swing arm 12, so that the feeding rod 13 slides reciprocatingly, driving the feeding arm 14 to swing, thereby driving the internal gear of the feeding assembly 16 to rotate for feeding; Step 4: The rotation of the main shaft 5 drives the second transmission arm 17 to reciprocate, so that the cutting assembly 18 cuts the nut cold heading raw material and clamps it through the clamp assembly 21. At the same time, the rotation of the main shaft 5 drives the third transmission arm 19 to reciprocate the rear ejection device 20, so that the rear ejection device 20 hits the clamp assembly 21 to move the material for material replacement, so as to facilitate cold heading when the upsetting die assembly 9 slides; Step 5: When the upsetting die assembly 9 slides back and forth, the second swing arm 35 is rotated left and right by the push rod 37, so that the transmission rack 34 slides back and forth, driving the connecting gear 33 and the metering rod 32 to rotate back and forth in the fixed tube 30, so that the groove inside the metering rod 32 rotates downward, so that the lubricating oil inside the groove drips onto the upsetting die through the oil injection pipe 31, and automatic lubrication is performed; Step 6: After the cold heading is completed, the nut is automatically discharged through the discharge barrel 22, enters the interior of the receiving barrel 23 through the discharge barrel 22, and automatically falls on the surface of the first filter screen 25, and is rinsed with water through the connection port 29 on the upper side of the first filter screen 25, so that the lubricating oil on the surface of the nut falls off, and the nut is rolled out through the tilting mechanism of the first filter screen 25 and the partition plate 24; Step 7: The mixed liquid of water and lubricating oil after spraying enters the bottom of the receiving barrel 23, and is input into the static tank 26 through a pump, filtered and static, and the upper layer of lubricating oil is input into the oil tank 28 for recycling through a pump.

[0023] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention; the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in the field. In addition, the directional nouns such as up, down, left, right, front and back in the text only represent their relative positions rather than absolute positions.

[0024] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-lubricating cold heading machine for nut processing, include: A base (1), a frame (3) fixed to the surface of the base (1), and a heading die assembly (9) and a clamp assembly (21) arranged inside the frame (3); It is characterized by further comprising: An eccentric wheel (4), the eccentric wheel (4) being rotatably mounted on the left side of the interior of the frame (3), and the end of the eccentric wheel (4) being connected to a main shaft (5), and the main shaft (5) being transmission-connected to a driving motor (6) via a transmission belt (7); A first transmission arm (8), the left side of the upsetting die assembly (9) being rotatably connected to the first transmission arm (8), and the top end of the first transmission arm (8) being rotatably connected to the outer side of the eccentric wheel (4); A feeding assembly (16), wherein the feeding assembly (16) is arranged outside the right end of the frame (3), and a cutting assembly (18) is arranged on the rear side of the frame (3) and is located between the upsetting die assembly (9) and the clamp assembly (21); A discharge barrel (22), wherein the discharge barrel (22) is arranged at the middle of the front side of the frame (3), and the discharge barrel (22) is located between the upsetting die assembly (9) and the clamp assembly (21); A receiving barrel (23), wherein the top of the receiving barrel (23) is connected to the bottom of the discharging barrel (22), and a partition plate (24) located below the discharging barrel (22) is provided inside the receiving barrel (23), and a first filter screen (25) is integrally connected to the top of the partition plate (24); A stationary tank (26), the stationary tank (26) being connected to the rear side of the top end of the material receiving barrel (23), and the top of the stationary tank (26) being connected to an oil tank (28) located above the housing (2); A fixed pipe (30), wherein the bottom end of the oil tank (28) is fixed with the fixed pipe (30), and the bottom of the fixed pipe (30) is connected to an oil injection pipe (31).

2. A self-lubricating cold heading machine for nut processing according to claim 1, Features: An extrusion wheel (11) is installed on the outer side of the rear end of the main shaft (5), and a first swing arm (12) is provided on the outer side of the extrusion wheel (11). The first swing arm (12) is rotatably connected to the outer side of the frame (3), and the top end of the first swing arm (12) is in contact with the extrusion wheel (11).

3. A self-lubricating cold heading machine for nut processing according to claim 2, Features: The bottom end of the first swing arm (12) is connected to a feeding rod (13), the top end of the feeding rod (13) is slidably connected to the first swing arm (12), the feeding rod (13) forms a left-right sliding structure on the rear side of the frame (3), the end of the feeding rod (13) is hinged to a feeding arm (14), the top end of the feeding arm (14) is connected to a transmission wheel (15), and the front side of the feeding arm (14) is connected to a feeding assembly (16).

4. A self-lubricating cold heading machine for nut processing according to claim 1, Features: The outer side of the cutting assembly (18) is connected to a second transmission arm (17), and the top end of the second transmission arm (17) is hinged to the end of the main shaft (5).

5. A self-lubricating cold heading machine for nut processing according to claim 1, Features: The front end of the eccentric wheel (4) is connected to a third transmission arm (19), and the end of the third transmission arm (19) is hingedly connected to a rear ejecting device (20), and the bottom end of the rear ejecting device (20) is rotatably connected to the right side of the frame (3).

6. A self-lubricating cold heading machine for nut processing according to claim 1, Features: The receiving barrel (23) is connected to the static tank (26) via a pump, a second filter screen (27) is fixed inside the static tank (26), and a water outlet is provided at the bottom end of the static tank (26), and water is input into the connection port (29) through the water outlet connected to the pump.

7. A self-lubricating cold heading machine for nut processing according to claim 1, Features: The oil tank (28) is connected to the static tank (26) via a pump, and the oil tank (28) is used to contain lubricating oil. An oil filling pipe (31) provided at the bottom of the oil tank (28) is provided corresponding to the internal upsetting die of the upsetting die assembly (9).

8. A self-lubricating cold heading machine for nut processing according to claim 1, Features: A quantitative rod (32) is rotatably mounted inside the fixed tube (30), a connecting gear (33) is fixedly mounted on the end of the quantitative rod (32), and a transmission rack (34) is meshedly connected to the connecting gear (33).

9. A self-lubricating cold heading machine for nut processing according to claim 8, Features: The transmission rack (34) is slidably connected to the bottom surface of the oil tank (28), and a second swing arm (35) is meshingly connected below the top end of the transmission rack (34), the middle part of the second swing arm (35) is rotatably connected to the outside of the limit frame (10) through a limit shaft (36), and the bottom end of the second swing arm (35) is slidably connected to a push rod (37), and the bottom end of the push rod (37) is fixedly mounted on the surface of the upsetting die assembly (9).

10. A method for operating the self-lubricating cold heading machine for nut processing as claimed in claim 1, Features: The working method comprises the following steps: Step 1: Insert the nut cold heading raw material into the feeding assembly (16) for feeding; Step 2: The main shaft (5) is driven to rotate by a driving motor (6), thereby driving the eccentric wheel (4) to rotate eccentrically, thereby driving the first transmission arm (8) to move back and forth inside the frame (3), so that the upsetting die assembly (9) can slide back and forth left and right; Step 3: By rotating the main shaft (5), the extrusion wheel (11) is driven to rotate eccentrically, so that the extrusion wheel (11) reciprocates against the first swing arm (12), causing the feeding rod (13) to slide back and forth, driving the feeding arm (14) to swing, thereby facilitating the internal gear of the feeding assembly (16) to rotate and perform material loading; Step 4: The rotation of the main shaft (5) drives the second transmission arm (17) to move back and forth, so that the cutting assembly (18) cuts the nut cold heading raw material and clamps it through the clamp assembly (21). At the same time, the rotation of the main shaft (5) drives the third transmission arm (19) to pull the rear ejection device (20) back and forth, so that the rear ejection device (20) hits the clamp assembly (21) to perform material replacement movement, so as to facilitate cold heading when the forging die assembly (9) slides; Step 5: When the upsetting die assembly (9) slides back and forth, the second swing arm (35) is rotated left and right by the push rod (37), so that the transmission rack (34) slides back and forth, driving the connecting gear (33) and the metering rod (32) to rotate back and forth in a circular manner inside the fixed tube (30), so that the groove inside the metering rod (32) rotates downward, so that the lubricating oil inside the groove drips onto the upsetting die through the oil injection pipe (31), thereby performing automatic lubrication; Step 6: After the cold heading is completed, the nut is automatically discharged through the discharge barrel (22), enters the interior of the receiving barrel (23) through the discharge barrel (22), and automatically falls onto the surface of the first filter screen (25), and is rinsed with water through the connection port (29) on the upper side of the first filter screen (25), so that the lubricating oil on the surface of the nut falls off, and the nut is rolled out through the tilting mechanism of the first filter screen (25) and the partition plate (24); Step 7: The mixed liquid of water and lubricating oil after spraying enters the bottom of the receiving barrel (23), is input into the static tank (26) through a pump, is filtered and allowed to stand, and the upper layer of lubricating oil is input into the oil tank (28) through a pump for recycling.

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