Bolt cold header

Abstract

The invention relates to the technical field of cold heading machines, and provides a bolt cold heading machine which comprises a machine body and further comprises a spraying pipe, a material receiving barrel and a discharging groove, the spraying pipe is installed on the machine body and used for spraying cutting fluid to a cold heading position, a spin-drying barrel is rotatably connected into the material receiving barrel, the spin-drying barrel is of a structure with the top open, and the discharging groove is formed in the machine body. The spin-drying barrel is located below the forward punching system and used for bearing bolts subjected to cold heading, an opening and closing assembly used for opening and closing the spin-drying barrel is arranged at the bottom of the spin-drying barrel, the discharging groove communicates with the bottom of the spin-drying barrel through a discharging barrel, and a bolt discharging opening is formed in the discharging groove. A bearing pad used for bearing the bolts and adsorbing the cutting fluid is installed in the discharging groove and obliquely arranged in the discharging groove. By means of the technical scheme, the technical problem that in the prior art, cutting fluid is left on the surface of a bolt after cold heading, and follow-up collection is affected is solved.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of cold heading machines, and more particularly, to a bolt cold heading machine. Background Art

[0002] Cold heading machines are mainly used for cold forming of metals, and fasteners such as bolts are manufactured through dies and stamping. Cold heading machines generally include a feeding system, a cutting system, a front punching system, a rear punching system, and a clamping table rotation system. The metal wire is continuously conveyed by the feeding system, cut into a specific length by the cutting system, and cold heading processing is performed on the cut bar by the front punching and rear punching systems.

[0003] During the processing, due to the use of high pressure to extrude the workpiece at room temperature, the equipment does a large amount of work. Usually, cutting fluid is sprayed at the cold heading position to cool the workpiece and the equipment. After cold heading, the surface of the bolt remains with cutting fluid, which is not convenient for subsequent collection and further processing of the bolt, and manual cleaning of the bolt surface is also required, reducing the processing efficiency. Summary of the Invention

[0004] To overcome the above defects, embodiments of the present disclosure provide a bolt cold heading machine, which solves the technical problem that the surface of the bolt after cold heading in the prior art remains with cutting fluid, affecting subsequent collection.

[0005] According to one aspect, at least one embodiment of the present disclosure provides a bolt cold heading machine, including a machine body, a front punching system, and a rear punching system, and further including: A spray pipe installed on the machine body for spraying cutting fluid at the cold heading position; A receiving barrel, inside which a drying barrel is rotatably connected. The drying barrel has an open top structure and is located below the front punching system for receiving the bolt after cold heading. An opening and closing assembly is provided at the bottom of the drying barrel for opening and closing the drying barrel; A discharge chute, which is connected to the bottom of the drying barrel through a blanking barrel. A bolt discharge port is provided in the discharge chute, and a receiving pad for supporting the bolt and adsorbing cutting fluid is installed inside the discharge chute.

[0006] To improve the adsorption effect of the receiving pad on the cutting fluid, the receiving pad is inclined inside the discharge chute, and one end of the receiving pad close to the bolt discharge port can be rolled up upward to block the bolt.

[0007] To improve the removal effect of the cutting fluid, it further includes an extrusion plate. The extrusion plate is movably arranged inside the discharge groove. An extrusion pad is installed on one side of the extrusion plate close to the receiving pad. A support plate for supporting the receiving pad is fixedly connected inside the discharge groove. The extrusion plate can drive the extrusion pad to approach or move away from the receiving pad to extrude the bolts.

[0008] To further improve the removal effect of the cutting fluid, it further includes a purging pipe. The purging pipe is arranged inside the discharge groove. The purging pipe is communicated with a plurality of nozzles for spraying gas onto the bolts on the receiving pad.

[0009] To improve the purging effect, the purging pipe is movably arranged inside the discharge groove.

[0010] To improve the cooling effect on the workpiece and the equipment, it further includes a cooling assembly. The cooling assembly is used to cool the cutting fluid. The cooling assembly includes: A cold water tank, which is installed on the machine body; A cooling pipe, which is arranged in a spiral shape inside the cold water tank. The spray pipe and the cooling pipe are communicated.

[0011] Preferably, the opening and closing assembly includes: A bottom plate, which is vertically movable inside the blanking cylinder. The bottom plate and the drying cylinder are in sealed sliding fit.

[0012] To realize the rotation of the drying cylinder, it further includes a driving member. The driving member is used to drive the bottom plate and the drying cylinder to rotate. The driving member includes: A rotating shaft, which is vertically movable inside the blanking cylinder; A driven gear, which is fixedly sleeved outside the rotating shaft; A driving gear, which is rotatably arranged inside the blanking cylinder. The driven gear is always engaged with the driving gear during the lifting process.

[0013] To facilitate the bolts to fall into the drying cylinder, a blanking hopper is communicated with the top of the receiving cylinder.

[0014] To ensure the liquid absorption effect of the receiving pad and the extrusion pad, the receiving pad is detachably connected to the support plate, and the extrusion pad is detachably connected to the extrusion plate.

[0015] The beneficial effects of the embodiments of the present disclosure are as follows: 1. In the present disclosure, the cutting fluid can be sprayed onto the workpiece and the equipment during cold heading through the spray pipe. At the same time, the cold water in the cold water tank cools the cutting fluid in the cooling pipe to ensure the cooling effect on the workpiece and the equipment.

[0016] 2. In the present disclosure, the cold - headed bolt falls into the interior of the drying cylinder through the blanking hopper. Through the rapid rotation of the drying cylinder, the cutting fluid on the surface of the bolt can be thrown out into the interior of the receiving cylinder. As the bottom plate descends, the dried bolt falls into the interior of the discharge chute. The bolt is received by the receiving pad and the residual cutting fluid on the surface of the bolt is absorbed. The extrusion plate drives the extrusion pad to extrude the bolt, and at the same time, the nozzle sprays gas onto the bolt to blow - purge the bolt, further reducing the residual cutting fluid on the surface of the bolt.

[0017] 3. Therefore, compared with the bolt cold - heading machine in the prior art, in the present disclosure, the cold - headed bolt after processing falls into the interior of the drying cylinder. The cutting fluid on the surface of the bolt is thrown out through the rotation of the drying cylinder. The bottom plate opens and closes the drying cylinder. The dried bolt falls into the interior of the discharge chute. Through the cooperation of the receiving pad and the extrusion pad, the bolt is extruded and the cutting fluid on its surface is adsorbed. The nozzle sprays gas onto the bolt to blow - purge it, further reducing the residual cutting fluid on the surface of the bolt, which is convenient for the subsequent collection and further processing of the bolt. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments of the present disclosure. Obviously, the drawings in the following description are only some exemplary embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the exemplary embodiments of the present disclosure and these drawings.

[0019] Figure 1 It is a schematic structural diagram of the overall first - perspective view in an embodiment of the present disclosure; Figure 2 For Figure 1 it is a schematic structural diagram of the spray pipe and the cooling component in the embodiment of Figure 3 For Figure 1 it is a schematic structural diagram of the receiving cylinder, the drying cylinder, the discharge chute and the blanking cylinder in the embodiment of Figure 4 For Figure 1 it is a schematic structural diagram of the receiving cylinder, the drying cylinder, the discharge chute and the protective cover in the embodiment of Figure 5 For Figure 1 it is a schematic structural diagram of the support plate, the second electric cylinder, the bent rod and the sliding plate in the embodiment of Figure 6 For Figure 1 it is a schematic structural diagram of the purging pipe, the nozzle and the fourth electric cylinder in the embodiment of Figure 7 For Figure 1 it is a schematic structural diagram of the drying cylinder, the bottom plate and the driving member in the embodiment of Figure 8 for Figure 1 A schematic diagram of the overall structure of the second viewing angle in an embodiment of the present invention.

[0020] In the figure: 1. Machine body; 2. Feeding system; 3. Forward flushing system; 4. Back flushing system; 5. Clamping table operation system; 6. Spray pipe; 7. Receiving barrel; 8. Drying barrel; 9. Discharge chute; 10. Drop barrel; 11. Receiver pad; 12. Support plate; 13. Electric cylinder 2; 14. Bending rod; 15. Slide plate; 16. Baffle; 17. Extrusion plate; 18. Electric cylinder 3; 19. Extrusion pad; 20. Purge pipe; 21. Spray head; 22. Electric cylinder 4; 23. Drop hopper; 101. Cold water tank; 102. Cooling pipe; 201, bottom plate; 202, protective cover; 203, electric cylinder 1; 204, rotating shaft; 205, driven gear; 206, driving gear; 207, motor; 208, limit rod. DETAILED DESCRIPTION The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0021] In order to simplify the drawings, only the parts related to the disclosure are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0022] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0023] In the present disclosure, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is less than that of the second feature.

[0024] In the description of this embodiment, the orientation or positional relationships such as "up", "down", "left" and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present disclosure.

[0025] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be construed as indicating or implying relative importance.

[0026] As Figures 1 to 8 shown, it shows a bolt cold heading machine in an embodiment of the present disclosure, including a machine body 1, a feeding system 2, a cutting system, a front punching system 3, a rear punching system 4 and a clamping table operation system 5. The feeding system 2 conveys a metal wire to the cutting system, the cutting system cuts the metal wire into metal segments of a fixed length, the clamping table operation system 5 operates the metal segments between multiple workstations, and the metal segments are cold headed into bolts through the cooperation of the front punching system 3 and the rear punching system 4. This is the working principle of the existing cold heading machine. The present disclosure does not change its basic structure, but makes improvements in the separation of the cutting fluid and the bolts on this basis, which will not be elaborated here. It also includes a spray pipe 6, a receiving cylinder 7 and a discharge chute 9. Compared with the bolt cold heading machine in the prior art, in the present disclosure, the bolts after cold heading processing fall into the inside of a drying cylinder 8, the cutting fluid on the surface of the bolts is thrown out by the rotation of the drying cylinder 8, the drying cylinder 8 is opened and closed by a bottom plate 201, the dried bolts fall into the inside of the discharge chute, the bolts are extruded through the cooperation of a receiving pad 11 and an extrusion pad 19 and the cutting fluid on their surfaces is adsorbed, and gas is blown onto the bolts through a nozzle 21 to purge them, further reducing the residual cutting fluid on the surfaces of the bolts and facilitating the subsequent collection and further processing of the bolts.

[0027] The spray pipe 6 is installed on the machine body 1 and is used to spray cutting fluid at the cold heading position. To improve the cooling effect on the workpiece and the equipment, a cooling component is further included. The cooling component is used to cool the cutting fluid. The cooling component includes a cold water tank 101 and a cooling pipe 102. The cold water tank 101 is installed on the machine body 1. The cooling pipe 102 is arranged in a spiral shape inside the cold water tank 101. The spray pipe 6 is communicated with the cooling pipe 102. The cold water tank 101 is communicated with an external chiller or a faucet. Cold water is transported into the interior of the cold water tank 101 through the chiller or the faucet. The cooling pipe 102 is communicated with a cutting fluid delivery pump. The delivery pump pumps the cutting fluid through the cooling pipe 102 to the spray pipe 6 and lubricates and cools the workpiece and the equipment during cold heading. The cutting fluid in the cooling pipe 102 is cooled by the cold water, thereby improving the cooling effect on the workpiece and the equipment.

[0028] A drying cylinder 8 is rotatably connected inside the material receiving cylinder 7. The drying cylinder 8 has an open top structure. The drying cylinder 8 is located below the front punching system 3 and is used to receive the cold headed bolts. A plurality of liquid outlet holes are provided on the drying cylinder 8. A opening and closing component for opening and closing the drying cylinder 8 is arranged at the bottom of the drying cylinder 8. The opening and closing component includes a bottom plate 201. The bottom plate 201 is arranged to be liftable inside the blanking cylinder 10. A protective cover 202 is fixedly connected inside the blanking cylinder 10. An electric cylinder 203 is installed inside the protective cover 202. The bottom plate 201 is fixedly connected to the output end of the electric cylinder 203. The bottom plate 201 and the drying cylinder 8 are in sealed sliding fit. A blanking hopper 23 is communicated with the top of the material receiving cylinder 7. The cold headed bolts fall into the interior of the drying cylinder 8 through the blanking hopper 23. The drying cylinder 8 drives the cold headed bolts to rotate. Under the action of centrifugal force, the bolts move towards the edge of the drying cylinder 8. The cutting fluid is thrown out through the liquid outlet holes under the action of centrifugal force, thereby initially drying the bolts. After drying for a period of time, the bottom plate 201 is driven to descend by the electric cylinder 203, so that the bolts can fall through the gap between the bottom plate 201 and the drying cylinder 8. The protective cover 202 protects the electric cylinder 203 and prevents the cutting fluid from contaminating the electric cylinder 203. A drain pipe is communicated with the bottom of the material receiving cylinder 7, and the cutting fluid can be discharged in time to prevent the cutting fluid from accumulating inside the material receiving cylinder 7 and re-entering the interior of the drying cylinder 8 to contaminate the bolts.

[0029] To achieve the rotation of the drying cylinder 8, a driving member is further included. The driving member is used to drive the bottom plate 201 and the drying cylinder 8 to rotate. The driving member includes a rotating shaft 204, a driven gear 205 and a driving gear 206. The rotating shaft 204 is arranged to be liftable inside the blanking cylinder 10. The rotating shaft 204 is rotatably connected to the output end of the first electric cylinder 203. The driven gear 205 is fixedly sleeved outside the rotating shaft 204. The driving gear 206 is rotatably arranged inside the blanking cylinder 10. A motor 207 is installed inside the protective cover 202. The driving gear 206 is fixedly connected to the output end of the motor 207. The driven gear 205 is always meshed with the driving gear 206 during the lifting process. The height of the driving gear 206 is much higher than the height of the driven gear 205. The bottom plate 201 is fixedly connected with a plurality of limiting rods 208. The limiting rods 208 are in sliding fit with the drying cylinder 8. When the first electric cylinder 203 drives the rotating shaft 204 and the bottom plate 201 to rise to close the bottom of the drying cylinder 8, the driven gear 205 is located at the upper position of the driving gear 206. When the first electric cylinder 203 drives the bottom plate 201 to descend to open the drying cylinder 8, the driven gear 205 is located at the lower position of the driving gear 206. During this process, the driven gear 205 is always meshed with the driving gear 206. The motor 207 drives the driving gear 206 to rotate, thereby driving the driven gear 205 and the bottom plate 201 to rotate. Through the sliding fit between the limiting rods 208 and the drying cylinder 8, the bottom plate 201 can drive the drying cylinder 8 to rotate and can also adapt to the lifting of the bottom plate 201.

[0030] The discharge chute 9 is communicated with the bottoms of the blanking cylinder 10 and the drying cylinder 8. A bolt discharge port is opened in the discharge chute 9. A receiving pad 11 for supporting the bolts and adsorbing the cutting fluid is installed inside the discharge chute 9. A supporting plate 12 for supporting the receiving pad 11 is fixedly connected inside the discharge chute 9. After the first electric cylinder 203 drives the bottom plate 201 to descend, the dried bolts fall into the discharge chute 9 through the blanking cylinder 10. The bolts land on the receiving pad 11. The receiving pad 11 can be made of sponge material and can adsorb the cutting fluid on the surface of the bolts, further reducing the residual cutting fluid on the bolts.

[0031] To improve the adsorption effect of the receiving pad 11 on the cutting fluid, the receiving pad 11 is inclined and arranged inside the discharge chute 9. The receiving pad 11 is detachably connected to the support plate 12 through Velcro. The support plate 12 is inclined. One end of the receiving pad 11 close to the bolt discharge port can be rolled up upward to block the bolts. An electric cylinder two 13 is installed on the discharge chute 9. The output end of the electric cylinder two 13 is fixedly connected with a bent rod 14. One end of the receiving pad 11 close to the bolt discharge port is detachably connected to the bent rod 14 through Velcro. The electric cylinder two 13 can drive the bent rod 14 to lift and lower, so as to roll up the end of the receiving pad 11 upward to block the falling bolts, make the bolts stay on the receiving pad 11, and thus improve the adsorption effect on the cutting fluid. After a period of time, the electric cylinder two 13 drives the bent rod 14 to descend, so that the receiving pad 11 falls back to the inclined state again, and the bolts continue to fall and are discharged from the bolt discharge port for collection. The bent rod 14 is fixedly connected with a slide plate 15, which facilitates the sliding of the bolts and prevents the bolts from falling off.

[0032] To improve the removal effect of the cutting fluid, an extrusion plate 17 is further included. The extrusion plate 17 is movably arranged inside the discharge chute 9. An electric cylinder three 18 is installed on the discharge chute 9. The extrusion plate 17 is fixedly connected to the output end of the electric cylinder three 18. An extrusion pad 19 is installed on one side of the extrusion plate 17 close to the receiving pad 11. The extrusion pad 19 is detachably connected to the extrusion plate 17. The extrusion plate 17 can drive the extrusion pad 19 to approach or move away from the receiving pad 11 to extrude the bolts. The moving direction of the extrusion plate 17, that is, the telescopic direction of the electric cylinder three 18, is perpendicular to the support plate 12. The extrusion plate 17 drives the extrusion pad 19 to approach the receiving pad 11 to extrude the bolts between the extrusion pad 19 and the receiving pad 11. The extrusion pad 19 and the receiving pad 11 are made of the same material, which can further adsorb the cutting fluid on the surface of the bolts. The receiving pad 11 and the extrusion pad 19 can be conveniently installed on the support plate 12 and the extrusion plate 17 through Velcro, and the receiving pad 11 and the extrusion pad 19 can be replaced regularly to ensure their absorption effect on the cutting fluid. A baffle 16 is fixedly connected to the inner bottom wall of the discharge chute 9 close to the bolt discharge port. The excess cutting fluid partly falls on the bottom of the discharge chute 9 through the receiving pad 11. The baffle 16 blocks the cutting fluid to prevent it from mixing into the discharged bolts.

[0033] To further improve the removal effect of the cutting fluid, it further includes a purging pipe 20. The purging pipe 20 is movably arranged inside the discharge chute 9. The purging pipe 20 is communicated with a plurality of nozzles 21 for blowing gas onto the bolts on the receiving pad 11. The purging pipe 20 is communicated with an external gas supply device through a telescopic pipe. The external gas supply device transports high-pressure gas into the purging pipe 20 and blows it onto the receiving pad 11 through the nozzles 21. Under the action of the high-pressure gas, the cutting fluid on the surface of the bolts is blown onto the receiving pad 11 and absorbed by it, further improving the cleaning effect of the cutting fluid. An electric cylinder four 22 is installed on the discharge chute 9. The purging pipe 20 is fixedly connected to the output end of the electric cylinder four 22. The purging pipe 20 is driven to move by the electric cylinder four 22 to expand the blowing area of the nozzles 21, thereby improving the purging effect of the cutting fluid. The telescopic pipe expands and contracts to adapt to the movement of the purging pipe 20.

[0034] The working principle or usage process of this bolt cold heading machine is as follows: The feeding system 2 transports the wire to the cutting system. The cutting system cuts the wire into metal segments of a fixed length. The front punching system 3, the rear punching system 4, and the clamping table operation system 5 cooperate to cold heading the metal segments into bolts. The processed bolts fall into the inside of the drying cylinder 8 through the blanking hopper 23; The initial bottom plate 201 closes the bottom of the drying cylinder 8. The motor 207 drives the driving gear 206 to rotate, thereby driving the driven gear 205, the rotating shaft 204, the bottom plate 201, and the drying cylinder 8 to rotate. Under the action of centrifugal force, the bolts and the cutting fluid are separated. After a period of time, the electric cylinder one 203 drives the rotating shaft 204 and the bottom plate 201 to descend, and the bolts fall through the gap between the bottom plate 201 and the drying cylinder 8; The bolts fall on the receiving pad 11 and slide along the receiving pad 11. The initial electric cylinder two 13 drives the bending rod 14 to be in a higher position. The end of the receiving pad 11 is in an upwardly tilted state to block the bolts. The nozzles 21 blow high-pressure gas onto the bolts. At the same time, the electric cylinder three 18 drives the pressing plate 17 and the pressing pad 19 to press the bolts, blowing off the bolts and adsorbing the cutting fluid on their surfaces; After a period of time, the electric cylinder two 13 drives the bending rod 14 to descend to make the receiving pad 11 return to an inclined state, and the bolts on its surface roll through the bolt discharge port for collection and subsequent processing.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not limiting. Although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present disclosure can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present disclosure, and they should all be covered within the scope of the claims of the present disclosure.

Claims

1. A bolt cold heading machine, comprising a machine body (1), characterized in that, It further includes: A spray pipe (6) which is installed on the machine body (1) and used for spraying cutting fluid to the cold heading position; A material receiving cylinder (7), inside which a drying cylinder (8) is rotatably connected. The drying cylinder (8) has an open top structure and is located below the forward punching system (3) for receiving the cold headed bolts. A switching component for opening and closing the drying cylinder (8) is provided at the bottom of the drying cylinder (8); A discharge chute (9) which is communicated with the bottom of the drying cylinder (8) through a blanking cylinder (10). A bolt discharge outlet is provided on the discharge chute (9), and a receiving pad (11) for supporting the bolts and adsorbing the cutting fluid is installed inside the discharge chute (9).

2. A cold heading machine for bolts according to claim 1, characterized in that, The receiving pad (11) is inclined and arranged inside the discharge chute (9), and one end of the receiving pad (11) close to the bolt discharge outlet can be rolled up upward to block the bolts.

3. A cold heading machine for bolts according to claim 2, characterized in that, It further includes a pressing plate (17) which is movably arranged inside the discharge chute (9). A pressing pad (19) is installed on one side of the pressing plate (17) close to the receiving pad (11). A supporting plate (12) for supporting the receiving pad (11) is fixedly connected inside the discharge chute (9), and the pressing plate (17) can drive the pressing pad (19) to approach or move away from the receiving pad (11) to press the bolts.

4. A cold heading machine for bolts according to claim 3, characterized in that, It further includes a purging pipe (20) which is arranged inside the discharge chute (9), and the purging pipe (20) is communicated with a plurality of nozzles (21) for spraying gas to the bolts on the receiving pad (11).

5. A cold heading machine for bolts according to claim 4, characterized in that, The purging pipe (20) is movably arranged inside the discharge chute (9).

6. The cold heading machine for bolts according to claim 5, characterized in that, It further includes a cooling component which is used for cooling the cutting fluid. The cooling component includes: A cold water storage tank (101) which is installed on the machine body (1); A cooling pipe (102) which is spirally arranged inside the cold water storage tank (101), and the spray pipe (6) is communicated with the cooling pipe (102).

7. A cold heading machine for bolts according to claim 6, characterized in that, The switching component includes: A bottom plate (201) which is liftably arranged inside the blanking cylinder (10), and the bottom plate (201) and the drying cylinder (8) are in sealed sliding fit.

8. A cold heading machine for bolts according to claim 7, characterized in that, It further includes a driving member which is used for driving the bottom plate (201) and the drying cylinder (8) to rotate. The driving member includes: A rotating shaft (204) which is liftably arranged inside the blanking cylinder (10); A driven gear (205) which is fixedly sleeved outside the rotating shaft (204); A driving gear (206) which is rotatably arranged inside the blanking cylinder (10), and the driven gear (205) is always meshed with the driving gear (206) during the lifting process.

9. A cold heading machine for bolts according to claim 8, characterized in that The top of the material receiving cylinder (7) is communicated with a blanking hopper (23).

10. A cold heading machine for bolts according to claim 9, characterized in that, The receiving pad (11) is detachably connected to the support plate (12), and the pressing pad (19) is detachably connected to the pressing plate (17).

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