Multi-station cycle cold heading machine

Abstract

The present invention relates to the technical field of cold heading machines, and specifically to a multi-station circulating cold heading forming machine, comprising a cold heading machine and a discharging rack, and also comprising a recovery box, wherein the cold heading machine is provided with a lower oil hole; a cleaning assembly, comprising a cleaning rack slidably mounted on the side wall of the recovery box, a plurality of mounting plates being mounted on the bottom of the cleaning rack, and a scraper for cleaning a collection tank being movably mounted on the bottom of the mounting plate; and an oil suction assembly, comprising a plurality of first oil inlet pipes inserted on the side wall of the recovery box, a floating box being provided near one end of the first oil inlet pipe near the recovery box, and a piston tube being provided on one side of the recovery box. The present invention sets a recovery box at the bottom of the cold heading machine to centrally recover dripping lubricating oil, and then uses the oil suction assembly to absorb the lubricating oil, and a cleaning assembly is set in the recovery box to clean and recover impurities in the lubricating oil in the recovery box, thereby improving the reuse rate of the lubricating oil, saving costs, and realizing intermittent automatic oil replenishment, thereby improving the use quality of the cold heading machine.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading machines, in particular to a multi-station circulating cold heading forming machine. Background Art

[0002] A cold forging machine is a forging machine used to thicken the top of bars or wire at room temperature. It is a specialized machine primarily used for mass production of fasteners such as nuts and bolts. Cold forging machines use cold forging to forge the heads of bolts and screws, minimizing cutting work and allowing them to be directly formed into the desired shape and size. This not only saves significant material but also significantly increases production efficiency and significantly improves the mechanical strength of the forged parts.

[0003] When the cold heading machine is working, it will extrude a single raw material multiple times, so it has multiple different workstations and requires smooth material transportation. Therefore, when the cold heading machine is in use, each workstation needs to be lubricated, and the lubricating oil also has the function of cooling the workpiece to ensure the normal operation of each process. However, the existing cold heading machine cannot automatically add lubricating oil when in use, and the lubricating oil is deposited at the bottom of the cold heading machine due to gravity. It can neither be fully utilized nor be easy to clean (the cold heading machine casing needs to be disassembled for cleaning), so that the cold heading machine needs maintenance and lubrication at regular intervals when it is working. Summary of the Invention

[0004] In response to the above-mentioned shortcomings of the prior art, the present invention provides a multi-station circulating cold heading forming machine, which can effectively solve the problems in the prior art that the lubricating oil of the cold heading machine cannot be recycled, affecting the working efficiency of the cold heading machine and the internal lubricating oil deposition is difficult to clean.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a multi-station circulation cold heading forming machine, comprising a cold heading machine and a discharging rack, and also comprising a recovery box, which is installed below the cold heading machine, the cold heading machine is provided with a lower oil hole, and the lower oil hole is connected to the recovery box; a filtering assembly comprises a drainage rack installed in the recovery box, the drainage rack is provided with a plurality of sieve plates, and the drainage rack is provided with a plurality of collecting troughs; a cleaning assembly is used to clean the drainage rack, comprising a cleaning rack slidably mounted on the side wall of the recovery box, a plurality of mounting plates are installed at the bottom of the cleaning rack, and brushes are installed on both sides of the mounting plates, and a scraper for cleaning the collecting trough is movably mounted on the bottom of the mounting plate; an oil suction assembly comprises a plurality of first oil inlet pipes inserted into the side wall of the recovery box, a floating box is provided at one end of the first oil inlet pipe near the recovery box, a piston tube is provided on one side of the recovery box, a lubrication rack is provided on the cold heading machine, and a plurality of nozzles are provided on the lubrication rack, an oil outlet pipe is connected between the piston tube and the lubrication rack, and the lubrication rack and the first oil inlet pipe are connected.

[0007] Furthermore, an elastic rod is connected between the cleaning frame and the mounting plate.

[0008] Furthermore, the scraper is slidably mounted on the bottom of the mounting plate, and a return spring is connected between the scraper and the mounting plate.

[0009] Furthermore, a threaded hole is provided on the cleaning frame, a reciprocating screw rod matching the threaded hole is rotatably installed in the recycling box, and a motor for driving the reciprocating screw rod to rotate is provided outside the recycling box.

[0010] Furthermore, two detection rods are movably inserted into the bottom of the floating box, and contact electrodes that cooperate with each other are installed on the upper ends of the detection rods and the inner top wall of the floating box. The contact electrodes are used to control the motor.

[0011] Furthermore, a cleaning box is provided on one side of the recycling box, and a baffle is elastically installed in the recycling box.

[0012] Furthermore, a cavity is provided in the drainage rack, a coolant is provided in the cavity, a refrigerator is provided in the cavity, the sieve plate passes through the top wall of the drainage rack and extends into the cavity, a liquid inlet pipe and a liquid outlet pipe are respectively provided on the top side walls of the piston tube, a one-way valve is respectively provided on the liquid inlet pipe and the liquid outlet pipe, and the ends of the liquid inlet pipe and the liquid outlet pipe away from the piston tube are both connected to the cavity.

[0013] Furthermore, a cam is provided on the driving shaft of the cold heading machine, a first piston rod is movably inserted on the piston tube, a transmission plate is fixedly installed on the top end of the first piston rod, and a first spring is sleeved on the first piston rod.

[0014] Furthermore, an oil tank is provided on one side of the recovery box, an oil supply pipe is connected to one side of the oil tank, a reversing pipe is connected to the oil supply pipe, a reversing block is slidably installed in the reversing pipe, a reversing hole is provided on the reversing block, a second oil inlet pipe is connected between the reversing pipe and the piston tube, a detection ring is fixedly installed near one end of the first oil inlet pipe near the floating tank, an annular airbag is provided in the detection ring, a connecting pipe is connected between the airbag and the reversing pipe, a second piston rod is provided in the connecting pipe, and the second piston rod is fixedly connected to the reversing block.

[0015] Furthermore, a guide plate is fixedly mounted on the side wall of the cold heading machine, and the guide plate is located below the discharge rack.

[0016] Beneficial effects

[0017] Compared with the known public technologies, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention provides a recovery box at the bottom of the cold heading machine to centrally recover dripping lubricating oil, and then utilizes the oil suction component to absorb the lubricating oil. In addition, a cleaning component is provided in the recovery box to clean and recover impurities in the lubricating oil in the recovery box, thereby improving the reuse rate of the lubricating oil, saving costs, and realizing intermittent automatic oil replenishment, thereby improving the use quality of the cold heading machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0020] Figure 1 It is a schematic diagram of the structure from the right side perspective of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention from a left perspective;

[0022] Figure 3 It is a structural diagram of the recycling box in the present invention;

[0023] Figure 4 for Figure 3 A magnified view of the structure of part A;

[0024] Figure 5 It is a structural schematic diagram of the cleaning rack in the present invention;

[0025] Figure 6 A schematic diagram of the structure between the scraper and the cleaning plate in the present invention;

[0026] Figure 7 It is a structural schematic diagram of the floating box part of the present invention;

[0027] Figure 8 is a cross-sectional view of the floating box portion of the present invention;

[0028] Figure 9 Schematic diagram of the structure of the piston tube part of the present invention;

[0029] Figure 10 is a cross-sectional view of the piston tube portion of the present invention;

[0030] Figure 11 It is a cross-sectional view of the drainage rack in the present invention.

[0031] The numbers in the figure represent: 1, cold heading machine; 2, recovery box; 3, drainage rack; 4, sieve plate; 5, collection tank; 6, cleaning rack; 601, elastic rod; 602, mounting plate; 603, scraper; 604, return spring; 7, reciprocating screw; 8, motor; 9, baffle; 10, threaded hole; 11, first oil inlet pipe; 12, collecting pipe; 13, piston tube; 14, transmission plate; 15, cam; 16, floating box; 17, detection rod; 18 , contact electrode; 19. Detection ring; 20. Airbag; 21. Oil outlet pipe; 22. Reversing pipe; 23. Second oil inlet pipe; 24. Connecting pipe; 25. Oil supply pipe; 26. Reversing block; 27. Reversing hole; 28. Second piston rod; 29. Oil tank; 30. Liquid inlet pipe; 31. Liquid outlet pipe; 32. Coolant; 33. Refrigerator; 34. Lubrication rack; 35. Nozzle; 36. Cleaning box; 37. Discharge rack; 38. Guide plate; 39. Lower oil hole. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments 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 any creative efforts shall fall within the scope of protection of the present invention.

[0033] The present invention will be further described below with reference to the embodiments.

[0034] Embodiment: A multi-station cycle cold heading forming machine includes a cold heading machine 1 and a discharge rack 37. When the cold heading machine 1 is working, it will extrude a single raw material multiple times, so it is provided with multiple different stations and requires smooth material transportation. Therefore, when the cold heading machine 1 is in use, it is necessary to lubricate each station, and the lubricating oil also has the function of cooling the workpiece to ensure the normal operation of each process. However, the existing cold heading machine 1 cannot automatically add lubricating oil when in use, and the lubricating oil is deposited at the bottom of the cold heading machine 1 due to the action of gravity, which can neither be fully utilized nor easily cleaned. The shell of the cold heading machine 1 needs to be disassembled for cleaning, so that the cold heading machine 1 needs to be maintained and lubricated at intervals during operation. In response to the above problems, this solution uses an oil suction component and a cleaning component to recycle the internal lubricating oil. The specific solution is as follows:

[0035] refer to Figures 1-11; In order to facilitate the recovery of lubricating oil, this solution installs a recovery box 2 under the cold heading machine 1, and a lower oil hole 39 is opened on the cold heading machine 1, which is connected to the recovery box 2. A guide plate 38 is fixedly installed on the side wall of the cold heading machine 1, and the guide plate 38 is located below the discharge rack 37; the filtering assembly includes a drainage rack 3 installed in the recovery box 2, and a plurality of sieve plates 4 are provided on the drainage rack 3, and a plurality of collection troughs 5 are provided on the drainage rack 3.

[0036] It is worth noting that the bottom of the cold heading machine 1 in this solution is connected to the recycling box 2, that is, the internal lubricating oil will flow into the recycling box 2 under the action of gravity, and this solution sets a guide plate 38 under the discharge rack 37, and the lubricating oil on the material is filtered and collected. On the basis of this solution, a driving mechanism can be set on one side of the discharge rack 37, and the driving mechanism can drive the discharge rack 37 to vibrate up and down to improve the effect of separating the lubricating oil from the material. The guide plate 38 guides the lubricating oil into the recycling box 2, further improving the recovery rate of the lubricating oil. In addition, a drainage rack 3 is set in the recycling box 2. The drainage rack 3 is tilted to concentrate the collected lubricating oil again for subsequent reuse, and the drainage rack 3 is provided with a sieve plate 4, such as Figure 3 As shown, each row of sieve plates 4 is located in the gap between the sieve plates 4 in the previous row. Arranging them in this way can increase the probability of solid impurities in the lubricating oil being blocked, thereby improving the quality of lubricating oil cleaning and facilitating its reuse. The collecting trough 5 on the drainage rack 3 can further collect solid impurities (the thrust on the impurities by gravity and the flow of lubricating oil causes them to be concentrated in the collecting trough 5). In this way, only the collecting trough 5 needs to be cleaned, which facilitates subsequent cleaning work.

[0037] refer to Figures 1-11 ; A cleaning component for cleaning the drainage rack 3 includes a cleaning rack 6 slidably mounted on the side wall of the recycling box 2, a plurality of mounting plates 602 are installed at the bottom of the cleaning rack 6, an elastic rod 601 is connected between the cleaning rack 6 and the mounting plate 602, and brushes are installed on both sides of the mounting plate 602, a scraper 603 for cleaning the collection trough 5 is movably mounted on the bottom of the mounting plate 602, the scraper 603 is slidably mounted on the bottom of the mounting plate 602, and a return spring 604 is connected between the scraper 603 and the mounting plate 602, a threaded hole 10 is provided on the cleaning rack 6, a reciprocating screw rod 7 matching the threaded hole 10 is rotatably installed in the recycling box 2, a motor 8 for driving the reciprocating screw rod 7 to rotate is provided on the outside of the recycling box 2, a cleaning box 36 is provided on one side of the recycling box 2, and a baffle 9 is elastically installed in the recycling box 2.

[0038] In order to facilitate the cleaning of the sieve plate 4 and the collecting trough 5 on the drainage rack 3, a cleaning rack 6 that can move back and forth is set in the recycling box 2, and a cleaning box 36 is set on one side of the recycling box 2 to collect the impurities inside. The specific method is as follows: the reciprocating screw 7 is driven to rotate by the motor 8, and the cleaning rack 6 is driven to move back and forth above the drainage rack 3 through the threaded transmission effect between the reciprocating screw 7 and the threaded hole 10. When the cleaning rack 6 moves toward the cleaning box 36, the mounting plate 602 on the cleaning rack 6 moves toward the cleaning box 36, and the brushes on both sides thereof are used to clean the sieve plate 4. During the movement, the bottom The scraper 603 will scoop up and collect the garbage in the collection trough 5 until the scraper 603 encounters the baffle 9. The scraper 603 now pushes the baffle 9 away. At this time, the baffle 9 is separated from the drainage rack 3, so that the dirty oil deposited at the bottom of the collection trough 5 can be pushed down the drainage rack 3 by the scraper 603 and flow into the cleaning box 36. When the baffle 9 reaches the maximum sliding stroke, the scraper 603 is pushed by the baffle 9 (the return spring 604 is stretched), and the bottom of the mounting plate 602 pushes the garbage on the scraper 603 out (it is worth noting that a notch is provided in the scraper 603 near the baffle 9, so that the garbage can fall into the cleaning box 36 from the notch), realizing the impact recovery of the garbage.

[0039] refer to Figures 1-11 ; The oil suction assembly includes multiple first oil inlet pipes 11 inserted on the side wall of the recovery box 2, and the multiple first oil inlet pipes 11 are connected to a collecting pipe 12 together, and the collecting pipe 12 is used to connect to the piston tube 13. The first oil inlet pipe 11 is provided with a floating box 16 at one end near the recovery box 2, and a piston tube 13 is provided on one side of the recovery box 2. A cam 15 is provided on the driving shaft of the cold heading machine 1, and a first piston rod is movably inserted on the piston tube 13, and a transmission plate 14 is fixedly installed on the top of the first piston rod, and a first spring is sleeved on the first piston rod. A lubrication rack 34 is provided on the cold heading machine 1, and a plurality of nozzles 35 are provided on the lubrication rack 34. An oil outlet pipe 21 is connected between the piston tube 13 and the lubrication rack 34, and the lubrication rack 34 is communicated with the first oil inlet pipe 11, and two detection rods 17 are movably inserted at the bottom of the floating box 16, and contact electrodes 18 that cooperate with each other are installed on the upper end of the detection rod 17 and the inner top wall of the floating box 16. The contact electrode 18 is used to control the motor 8.

[0040] This solution utilizes the drive shaft of the cold heading machine 1 to drive the cam 15 to rotate. The cam 15 pushes the transmission plate 14 on the first piston rod back and forth as it rotates. This, in conjunction with the first spring on the first piston rod, allows the transmission plate 14 to reciprocate up and down. When the first piston rod moves upward, the pressure in the lower half of the piston tube 13 decreases, creating a negative pressure in the multiple first oil inlet pipes 11, drawing the oil from the recovery tank 2 into the piston tube 13. When the first piston rod moves downward, the oil in the piston tube 13 is forced out and delivered from the oil outlet pipe 21 to the lubrication rack 34, where it is then sprayed out by multiple nozzles 35. (It is worth noting that the nozzles 35 correspond to the positions of the various workstations, thereby improving the lubrication effect.) Furthermore, this solution adds a float tank 16 at the end of the first oil inlet pipe 11, leveraging buoyancy to allow the first oil inlet pipe 11 to absorb the middle portion of the recovered oil. This absorption method prevents solid impurities from being sucked away while also preventing floating objects from being absorbed, resulting in cleaner absorbed oil.

[0041] In order to make cleaning more flexible, this solution sets two detection rods 17 that can slide up and down at the bottom of the floating box 16. When the internal oil level is low (the amount of oil that can be absorbed is small), the floating box 16 moves down, so that the two detection rods 17 are pushed up by the bottom wall of the recovery box 2, so that the contact electrodes 18 are fully contacted, thereby starting the motor 8, and then starting the cleaning rack 6 for cleaning. Such cleaning time can prevent the clean lubricating oil inside from being pushed into the cleaning box 36.

[0042] refer to Figures 1-11 A cavity is provided in the drainage rack 3, a coolant 32 is provided in the cavity, a refrigerator 33 is provided in the cavity, the sieve plate 4 passes through the top wall of the drainage rack 3 and extends into the cavity, an inlet pipe 30 and an outlet pipe 31 are respectively provided on the top side walls of the piston tube 13, a one-way valve is respectively provided on the inlet pipe 30 and the outlet pipe 31, and the ends of the inlet pipe 30 and the outlet pipe 31 away from the piston tube 13 are both connected to the cavity.

[0043] In order to ensure that the temperature of the recovered lubricating oil is low, a cavity is set in the drainage rack 3, and a coolant 32 is set inside. The sieve plate 4 passes through the top wall of the drainage rack 3 and is in full contact with the coolant 32. The refrigerator 33 is used to reduce the temperature of the coolant 32, thereby reducing the temperature of the sieve plate 4 and the drainage rack 3. The lubricating oil flowing through the drainage rack 3 can be fully cooled, so that the recycled lubricating oil has a good cooling effect.

[0044] It is worth noting that the upper half of the piston tube 13 is connected to the liquid inlet pipe 30 and the liquid outlet pipe 31, and the liquid inlet pipe 30 and the liquid outlet pipe 31 are respectively provided with a one-way valve. During the reciprocating movement of the piston rod, the liquid inlet pipe 30 extracts the coolant 32 and then uses the liquid outlet pipe 31 to return the coolant 32 to the drainage rack 3, thereby improving the coolant 32 to transfer the low temperature to various parts of the drainage rack 3.

[0045] refer to Figures 1-11 ; An oil tank 29 is provided on one side of the recovery box 2, and an oil supply pipe 25 is connected to one side of the oil tank 29. The oil supply pipe 25 is connected to a reversing pipe 22, and a reversing block 26 is slidably installed in the reversing pipe 22. The reversing block 26 is provided with a reversing hole 27. A second oil inlet pipe 23 is connected between the reversing pipe 22 and the piston tube 13. A detection ring 19 is fixedly installed at one end of the first oil inlet pipe 11 near the floating box 16. An annular air bag 20 is provided in the detection ring 19. A connecting pipe 24 is connected between the air bag 20 and the reversing pipe 22. A second piston rod 28 is provided in the connecting pipe 24, and the second piston rod 28 is fixedly connected to the reversing block 26.

[0046] In order to prevent the oil temperature from being too high, this solution provides a detection ring 19 at the end of the first oil inlet pipe 11, and an air bag 20 is provided inside the detection ring 19 (the air bag 20 is filled with evaporative liquid). When the air bag 20 is exposed to a high temperature, the evaporative liquid evaporates, and the air bag 20 expands to block the first oil inlet pipe 11. The internal air pressure is transmitted to the second piston rod 28 through the connecting pipe 24. The second piston rod 28 pushes the reversing block 26. The reversing hole 27 in the reversing block 26 is aligned with the oil replenishing pipe 25. Therefore, during the up and down movement of the first piston rod, the oil in the recovery tank 2 will not be absorbed. Instead, the lubricating oil in the oil tank 29 will be absorbed through the second oil inlet pipe 23 and the oil replenishing pipe 25, thereby improving the flexibility of lubricating oil replenishment.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A multi-station cycle cold heading machine, comprising a cold heading machine (1) and a discharge rack (37), characterized in that: Also includes: A recovery box (2) is installed below the cold heading machine (1), and a lower oil hole (39) is provided on the cold heading machine (1), and the lower oil hole (39) is connected to the recovery box (2); A filter assembly comprises a drainage rack (3) installed in a recovery box (2), wherein the drainage rack (3) is provided with a plurality of sieve plates (4), and the drainage rack (3) is provided with a plurality of collection troughs (5); A cleaning assembly for cleaning the drainage rack (3), comprising a cleaning rack (6) slidably mounted on the side wall of the recovery box (2), a plurality of mounting plates (602) being mounted on the bottom of the cleaning rack (6), brushes being mounted on both sides of the mounting plates (602), and a scraper (603) for cleaning the collection tank (5) being movably mounted on the bottom of the mounting plates (602); An oil suction assembly comprises a plurality of first oil inlet pipes (11) inserted into the side wall of a recovery box (2), a floating box (16) is provided at one end of the first oil inlet pipe (11) close to the recovery box (2), a piston tube (13) is provided on one side of the recovery box (2), a lubrication rack (34) is provided on the cold heading machine (1), and a plurality of nozzles (35) are provided on the lubrication rack (34), an oil outlet pipe (21) is connected between the piston tube (13) and the lubrication rack (34), and the lubrication rack (34) and the first oil inlet pipe (11) are in communication; An elastic rod (601) is connected between the cleaning frame (6) and the mounting plate (602); The scraper (603) is slidably mounted on the bottom of the mounting plate (602), and a return spring (604) is connected between the scraper (603) and the mounting plate (602); A cavity is provided in the drainage rack (3), a coolant (32) is provided in the cavity, a refrigerator (33) is provided in the cavity, the sieve plate (4) passes through the top wall of the drainage rack (3) and extends into the cavity, a liquid inlet pipe (30) and a liquid outlet pipe (31) are provided on the top side wall of the piston tube (13), a one-way valve is provided on the liquid inlet pipe (30) and the liquid outlet pipe (31), and the ends of the liquid inlet pipe (30) and the liquid outlet pipe (31) away from the piston tube (13) are both connected to the cavity.

2. The multi-station cycle cold heading machine according to claim 1, characterized in that: A threaded hole (10) is provided on the cleaning frame (6), a reciprocating screw rod (7) matching the threaded hole (10) is rotatably installed in the recovery box (2), and a motor (8) for driving the reciprocating screw rod (7) to rotate is provided outside the recovery box (2).

3. The multi-station cycle cold heading machine according to claim 1, characterized in that: Two detection rods (17) are movably inserted into the bottom of the floating box (16), and mutually cooperating contact electrodes (18) are installed on the upper ends of the detection rods (17) and the inner top wall of the floating box (16). The contact electrodes (18) are used to control the motor (8).

4. The multi-station cycle cold heading machine according to claim 1, characterized in that: A cleaning box (36) is provided on one side of the recycling box (2), and a baffle (9) is elastically installed in the recycling box (2).

5. The multi-station cycle cold heading machine according to claim 1, characterized in that: A cam (15) is provided on the driving shaft of the cold heading machine (1), a first piston rod is movably inserted into the piston tube (13), a transmission plate (14) is fixedly mounted on the top end of the first piston rod, and a first spring is sleeved on the first piston rod.

6. The multi-station cycle cold heading machine according to claim 1, characterized in that: An oil tank (29) is provided on one side of the recovery box (2), an oil supply pipe (25) is connected to one side of the oil tank (29), a reversing pipe (22) is connected to the oil supply pipe (25), a reversing block (26) is slidably installed in the reversing pipe (22), a reversing hole (27) is provided on the reversing block (26), a second oil inlet pipe (23) is connected between the reversing pipe (22) and the piston pipe (13), a detection ring (19) is fixedly installed at one end of the first oil inlet pipe (11) close to the floating box (16), an annular air bag (20) is provided in the detection ring (19), a connecting pipe (24) is connected between the air bag (20) and the reversing pipe (22), a second piston rod (28) is provided in the connecting pipe (24), and the second piston rod (28) is fixedly connected to the reversing block (26).

7. The multi-station cycle cold heading machine according to claim 1, characterized in that: A guide plate (38) is fixedly mounted on the side wall of the cold heading machine (1), and the guide plate (38) is located below the discharge rack (37).

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