Novel nut cold header

Abstract

The novel nut cold header comprises a base, and supporting legs are symmetrically and fixedly connected to the four corners of the bottom of the base. The driving mechanism drives the guide rod to move left and right in a reciprocating mode, meanwhile, the second motor drives the rotating wheel to rotate through the first reversing gear and the second reversing gear, when the feeding port is aligned with a cavity of the cavity die below, the material rod enters the cavity through the feeding port, and when the rotating wheel rotates, shearing force is formed through the cavity die and the support; the novel nut cold heading machine is characterized in that the material is cut, then the cavity die drives the material to be aligned with the guide rod through rotation, the guide rod extrudes the material in the cavity through the rod die so that the material can be extruded and formed, and when the extruded and formed material is rotated to the feeding port, the material rod continues to feed the material and ejects the extruded and formed material out of the cavity. According to the nut cold header, the multiple cavity dies are arranged in a rotating mode, continuous machining can be carried out, meanwhile, cutting and ejection can be automatically completed, and the working efficiency of the nut cold header is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of cold heading machines, in particular to a novel nut cold heading machine. Background Art

[0002] Cold heading machine is a special equipment mainly used for batch production of nuts, bolts and other fasteners. According to the theory of metal plastic deformation, a certain pressure is applied to the metal blank at room temperature to cause plastic deformation in the die cavity and form it into the specified shape and size.

[0003] The current nut cold heading machine, for example, a new type of cold heading machine for nut production proposed in publication number: CN220196243U, includes a motor, a small wheel disc No. 1 is fixedly sleeved on the output shaft of the motor, and a third groove is opened on the outer surface of the small wheel disc No. 1, a support frame is fixedly connected to the right side of the motor, and a No. 2 cross bar is rotatably installed on the top of the support frame, and a driving wheel is fixedly sleeved on the left side of the No. 2 cross bar, and a second groove is opened on the outer surface of the driving wheel, and a No. 1 belt is covered on the small wheel disc No. 1 and the driving wheel, and a No. 2 small wheel disc is fixedly sleeved on the left side of the driving wheel, and a fourth groove is opened on the outer surface of the No. 2 wheel disc, and a follower wheel is installed on the right side of the driving wheel, and a first groove is opened on the outer surface of the follower wheel. Through the above technical scheme, the problems of low cold heading efficiency and excessive waste of raw materials in cold heading forming in the prior art are solved.

[0004] Although the existing nut cold heading machine has solved the problems of low cold heading efficiency and excessive waste of raw materials in the prior art to a certain extent when in use, it is found in use that after the workpiece is cold headed, the material needs to be replaced and the material needs to go through a cutting process first. The existing cold heading machine cannot quickly complete loading, cutting and unloading, resulting in low working efficiency of the nut cold heading machine. Therefore, we have proposed a new type of nut cold heading machine to solve the problems raised. Summary of the invention

[0005] The purpose of the present invention is to provide a new type of nut cold heading machine, which achieves the purpose of not only being able to perform continuous processing but also being able to automatically complete cutting and ejecting through multiple cavity molds and a rotating setting, thereby effectively improving the working efficiency of the nut cold heading machine.

[0006] To achieve the above object, the present invention provides the following technical solution: a novel nut cold heading machine, comprising a base, wherein the four corners of the bottom of the base are symmetrically fixedly connected with legs, and the upper part of the base near the middle is fixedly connected with a support frame, wherein: The support frame is provided with a guide rod groove passing through the inner part near the top, and a guide rod is passed through the guide rod groove, a bracket is fixedly connected to the top of one end of the base, and the bracket is rotatably connected to a rotating wheel near one side of the support frame, and a rod mold is installed on one end of the guide rod near the rotating wheel, and the guide rod drives it to reciprocate left and right through a driving mechanism, and mounting grooves are symmetrically passed through four sides of the rotating wheel, and a cavity mold is installed in the mounting groove, a feed port is passed through the position near the bottom of the bracket, and a cavity is passed through the cavity mold, and a first reversing gear is fixedly connected to the shaft end of the rotating wheel away from the support frame, and a second motor is installed on the outer side of the bracket corresponding to the first reversing gear, and a second reversing gear is installed on the shaft end of the second motor corresponding to the first reversing gear; The inner wall of the rotating wheel corresponding to the installation groove is symmetrically provided with a locking rod groove, and the cavity mold is provided with a locking groove on one side corresponding to the locking rod groove, a locking rod is arranged inside the locking rod groove, a threaded groove is arranged at one end of the locking rod away from the installation groove, a screw is threadedly connected to the threaded groove, a transmission groove is arranged in the middle part of the inner side of the rotating wheel, one end of the screw located in the transmission groove is fixedly connected with a third reversing gear, the transmission groove is rotatably connected with a fourth reversing gear on the inner side corresponding to the third reversing gear, the shaft end of the fourth reversing gear close to the outer side of the rotating wheel is fixedly connected with a locking gear, and the locking gear is fixedly connected with a handle at one end away from the fourth reversing gear, a locking mechanism for locking the fourth reversing gear is arranged on the rotating wheel, and a feeding port is penetrated through the base near the position between the support frame and the rotating wheel.

[0007] Preferably, the driving mechanism includes a pulley frame, the base is fixedly connected to the pulley frame on the top near the support frame, the inner side of the pulley frame is rotatably connected to a large pulley, a first motor is installed on the top of the end of the base away from the bracket, a small pulley is fixedly connected to the shaft end of the first motor corresponding to the large pulley, the small pulley is connected to the large pulley through a transmission belt, a rocker is fixedly connected to the shaft end of the large pulley, the end of the rocker away from the large pulley is rotatably connected to a transmission rod, and the end of the transmission rod away from the rocker is rotatably connected to a guide rod.

[0008] Preferably, the rocker arm is transmission-connected to the guide rod via a transmission rod.

[0009] Preferably, the vertical distance from the central axis of the rotating wheel to the central axis of the cavity is the same as the vertical distance from the central axis of the rotating wheel to the central axis of the feed port.

[0010] Preferably, the locking rod is in the shape of a rectangular column, and the outer dimensions of the locking rod match the inner dimensions of the locking groove.

[0011] Preferably, the third reversing gear is meshed with the fourth reversing gear, and the third reversing gear corresponds to the screw rod one by one.

[0012] Preferably, the locking mechanism includes a fixed frame, the rotating wheel is fixedly connected to the outer side of the locking gear corresponding to the fixed frame, the fixed frame is penetrated by a guide groove, a guide rod is penetrated in the guide groove, a lifting frame is fixedly connected to one end of the guide rod close to the locking gear, a spring is sleeved on the guide rod between the lifting frame and the fixed frame, locking teeth are equidistantly fixedly connected to the top of the lifting frame, and a shifting rod is fixedly connected to the side of the lifting frame away from the rotating wheel.

[0013] Preferably, the guide rod is in the shape of a rectangular column, and the outer dimensions of the guide rod match the inner dimensions of the guide groove.

[0014] Preferably, the tooth pitch of the locking teeth is equal to the tooth pitch of the locking gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects: According to the present invention, when the cold heading machine is working, the driving mechanism drives the guide rod to move back and forth left and right, and at the same time, the second motor drives the rotating wheel to rotate through the first reversing gear and the second reversing gear. When the feed port is aligned with the cavity of the lower cavity mold, the material rod enters the cavity through the feed port. When the rotating wheel rotates, a shear force is formed through the cavity mold and the bracket to complete the material cutting. After that, the cavity mold carries the material to align with the guide rod through rotation. The guide rod extrude the material in the cavity through the rod mold to extrude the material. When the extruded material rotates to the feed port, the material rod continues to feed and ejects the extruded material from the cavity. The novel nut cold heading machine, through multiple cavity molds and a rotating arrangement, can not only perform continuous processing, but also automatically complete material cutting and ejection, thereby effectively improving the working efficiency of the nut cold heading machine.

[0016] In the present invention, the rod mold is detachably connected to the guide rod by bolts, and the rod mold is replaced by removing the bolts. When the cavity mold needs to be replaced, the fourth reversing gear is driven to rotate by the handle, and the fourth reversing gear drives the third reversing gears on four sides to rotate simultaneously through meshing, thereby driving the screw rods on four sides to rotate simultaneously, so that the screw rods drive the locking rod to move out of the locking groove through the threaded connection, so that the cavity mold can be moved out of the installation groove, and then the cavity mold to be installed is taken out, the cavity mold is inserted into the installation groove, and the handle is rotated in the opposite direction to insert the locking rod into the locking groove, and the cavity mold is pressed tightly, so that the cavity mold can be fixed in the installation groove. Through the installation structure of the cavity mold and the rod mold, the rod mold and multiple cavity molds can be quickly replaced to process workpieces of different sizes, thereby effectively improving the replacement efficiency of the cold heading machine mold.

[0017] The present invention, when the handle needs to be rotated to disassemble and assemble the cavity mold, the lifting frame is driven by the shifting rod to overcome the spring elastic force and move away from the locking gear, so that the locking tooth is separated from the locking gear, and the handle can be rotated; after the cavity mold is replaced, the shifting rod is released, and the spring pushes the lifting frame to move toward the locking gear, so that the locking tooth is meshed with the locking gear, and the locking gear is locked by the lifting frame and the locking tooth, so as to avoid the vibration generated by the operation of the equipment causing the handle to automatically deflect, thereby causing the installation of the cavity mold to become loose, thereby effectively improving the stability of the installation of the cavity mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from a side view; Figure 3 It is a schematic diagram of the three-dimensional structure of the rotating wheel of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the rotating wheel of the present invention; Figure 5 For the present invention Figure 3 A schematic diagram of the partially enlarged structure at center A; Figure 6 For the present invention Figure 4 Schematic diagram of the local enlarged structure at point B in the middle.

[0019] In the figure: 1, base; 2, legs; 3, support frame; 4, guide rod groove; 5, guide rod; 6, bracket; 7, rotating wheel; 8, rod mold; 9, pulley frame; 10, large pulley; 11, first motor; 12, small pulley; 13, transmission belt; 14, rocker; 15, transmission rod; 16, installation groove; 17, cavity mold; 18, feed port; 19, cavity; 20, first reversing gear; 21, second Motor; 22, second reversing gear; 23, locking rod groove; 24, locking groove; 25, locking rod; 26, thread groove; 27, screw rod; 28, transmission groove; 29, third reversing gear; 30, fourth reversing gear; 31, locking gear; 32, handle; 33, fixing frame; 34, guide groove; 35, guide rod; 36, lifting frame; 37, spring; 38, locking tooth; 39, lever; 40, unloading port. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the 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 creative work are within the scope of protection of the present invention. Example

[0021] See also Figures 1 to 3 The present invention provides a technical solution: a new type of nut cold heading machine, comprising a base 1, the four corners of the bottom of the base 1 are symmetrically fixedly connected with legs 2, and the upper part of the base 1 near the middle is fixedly connected with a support frame 3, wherein: The support frame 3 is provided with a guide rod groove 4 near the top, and a guide rod 5 is provided in the guide rod groove 4. A bracket 6 is fixedly connected to the top of one end of the base 1. The bracket 6 is rotatably connected to a rotating wheel 7 near the support frame 3. A rod mold 8 is installed at one end of the guide rod 5 near the rotating wheel 7. The guide rod 5 is driven to reciprocate left and right by a driving mechanism. Installation grooves 16 are symmetrically penetrated on four sides of the rotating wheel 7. A cavity mold 17 is installed in the installation groove 16. A feed port 18 is penetrated near the bottom of the bracket 6. A cavity 19 is penetrated in the cavity mold 17. The shaft end of the rotating wheel 7 away from the support frame 3 is fixedly connected to a first reversing gear 20. A second motor 21 is installed on the outer side of the bracket 6 corresponding to the first reversing gear 20, and a second reversing gear 22 is installed on the shaft end of the second motor 21 corresponding to the first reversing gear 20. The inner wall of the rotating wheel 7 corresponding to the mounting groove 16 is symmetrically provided with a locking rod groove 23, and the cavity mold 17 is provided with a locking groove 24 on one side corresponding to the locking rod groove 23. A locking rod 25 is arranged inside the locking rod groove 23, and a thread groove 26 is arranged at one end of the locking rod 25 away from the mounting groove 16. A screw rod 27 is connected to the inner thread of the thread groove 26. A transmission groove 28 is arranged at the middle part of the inner side of the rotating wheel 7, and a third reversing gear 29 is fixedly connected to one end of the screw rod 27 located in the transmission groove 28. A fourth reversing gear 30 is rotatably connected to the inner side of the transmission groove 28 corresponding to the third reversing gear 29. A locking gear 31 is fixedly connected to the shaft end of the fourth reversing gear 30 close to the outer side of the rotating wheel 7, and a handle 32 is fixedly connected to the end of the locking gear 31 away from the fourth reversing gear 30. A locking mechanism for locking the fourth reversing gear 30 is arranged on the rotating wheel 7, and a feeding port 40 is penetrated through the position of the base 1 close to the support frame 3 and the rotating wheel 7; When the cold heading machine is working, the guide rod 5 is driven to move back and forth left and right through the driving mechanism, and at the same time, the second motor 21 drives the rotating wheel 7 to rotate through the first reversing gear 20 and the second reversing gear 22. When the feed port 18 is aligned with the cavity 19 of the lower cavity mold 17, the material rod enters the cavity 19 through the feed port 18. When the rotating wheel 7 rotates, a shear force is formed through the cavity mold 17 and the bracket 6 to complete the cutting. After that, the cavity mold 17 carries the material to align with the guide rod 5 through rotation. The guide rod 5 extrude the material in the cavity 19 through the rod mold 8 to extrude the material. When the extruded material rotates to the feed port 18, the material rod continues to feed and ejects the extruded material from the cavity 19. Through the novel nut cold heading machine, through multiple cavity molds 17 and the rotation setting, not only continuous processing can be carried out, but also cutting and ejecting can be automatically completed, which effectively improves the working efficiency of the nut cold heading machine.

[0022] See also Figures 1 to 3 , the driving mechanism includes a pulley frame 9, the base 1 is fixedly connected to the top of the support frame 3 with the pulley frame 9, the inner side of the pulley frame 9 is rotatably connected with a large pulley 10, and a first motor 11 is installed on the top of the end of the base 1 away from the bracket 6, and the first motor 11 is fixedly connected with a small pulley 12 at the shaft end corresponding to the large pulley 10, and the small pulley 12 is connected to the large pulley 10 through a transmission belt 13, and the shaft end of the large pulley 10 is fixedly connected with a rocker 14, and the end of the rocker 14 away from the large pulley 10 is rotatably connected with a transmission rod 15, and the end of the transmission rod 15 away from the rocker 14 is rotatably connected with the guide rod 5, and the rocker 14 is connected to the guide rod 5 through the transmission rod 15. The transmission connection between the rocker 14 and the guide rod 5 is formed. When the first motor 11 is working, it drives the small pulley 12 to rotate, and the small pulley 12 drives the large pulley 10 to rotate synchronously through the transmission belt 13, and the large pulley 10 drives the rocker 14 to rotate, and the rocker 14 drives the guide rod 5 to reciprocate left and right through the transmission rod 15.

[0023] See also Figures 1 to 3The vertical spacing from the central axis of the rotating wheel 7 to the central axis of the cavity 19 is the same as the vertical spacing from the central axis of the rotating wheel 7 to the central axis of the feed port 18. The locking rod 25 is a rectangular column, and the outer dimensions of the locking rod 25 coincide with the inner dimensions of the locking groove 24. The third reversing gear 29 is meshed with the fourth reversing gear 30, and the third reversing gear 29 corresponds to the screw rod 27 one by one. The rod mold 8 is detachably connected to the guide rod 5 by bolts, and the rod mold 8 is replaced by removing the bolts. When the cavity mold 17 needs to be replaced, the fourth reversing gear 30 is driven to rotate by the handle 32, and the fourth reversing gear 30 drives the third reversing gears on the four sides through meshing. The wheels 29 rotate at the same time, thereby driving the four-side screws 27 to rotate at the same time, so that the screws 27 drive the locking rod 25 to move out of the locking groove 24 through the threaded connection, so that the cavity mold 17 can be moved out of the installation groove 16, and then the cavity mold 17 to be installed is taken out, and the cavity mold 17 is inserted into the installation groove 16, and the handle 32 is rotated in the opposite direction to insert the locking rod 25 into the locking groove 24 and tighten the cavity mold 17, so that the cavity mold 17 can be fixed in the installation groove 16. Through the installation structure of the cavity mold 17 and the rod mold 8, the rod mold 8 and multiple cavity molds 17 can be quickly replaced to process workpieces of different sizes, which effectively improves the replacement efficiency of the cold heading machine mold.

[0024] See also Figures 1 to 3 The locking mechanism includes a fixed frame 33, the rotating wheel 7 is fixedly connected to the outer side of the locking gear 31 with the fixed frame 33, the fixed frame 33 is penetrated with a guide groove 34, the guide groove 34 is penetrated with a guide rod 35, the guide rod 35 is fixedly connected to the end of the locking gear 31 near the lifting frame 36, the guide rod 35 between the lifting frame 36 and the fixed frame 33 is sleeved with a spring 37, the top of the lifting frame 36 is equidistantly fixedly connected with locking teeth 38, the lifting frame 36 is fixedly connected with a lever 39 on the side away from the rotating wheel 7, the guide rod 35 is a rectangular column, and the outer size of the guide rod 35 is consistent with the inner size of the guide groove 34, the teeth of the locking teeth 38 The pitch is equal to the pitch of the locking gear 31. When it is necessary to rotate the handle 32 to disassemble and assemble the cavity mold 17, the lifting frame 36 is driven by the lever 39 to overcome the elastic force of the spring 37 and move away from the locking gear 31, so that the locking tooth 38 is separated from the locking gear 31, and the handle 32 can be rotated. After the cavity mold 17 is replaced, the lever 39 is released, and the spring 37 pushes the lifting frame 36 to move toward the locking gear 31, so that the locking tooth 38 is meshed with the locking gear 31, and the locking gear 31 is locked by the lifting frame 36 and the locking tooth 38, so as to avoid the vibration generated by the operation of the equipment causing the handle 32 to automatically deflect, thereby causing the installation of the cavity mold 17 to become loose, thereby effectively improving the stability of the installation of the cavity mold 17.

[0025] Working principle: This is a new type of nut cold heading machine. When the cold heading machine is working, the first motor 11 drives the small pulley 12 to rotate, and the small pulley 12 drives the large pulley 10 to rotate synchronously through the transmission belt 13. The large pulley 10 drives the rocker 14 to rotate, and the rocker 14 drives the guide rod 5 to move back and forth left and right through the transmission rod 15. At the same time, the second motor 21 drives the rotating wheel 7 to rotate through the first reversing gear 20 and the second reversing gear 22. When the feed port 18 is aligned with the cavity 19 of the lower cavity mold 17, the material rod enters the cavity 19 through the feed port 18. When the rotating wheel 7 During rotation, shear force is formed by the cavity mold 17 and the bracket 6 to complete the material cutting. Then, the cavity mold 17 rotates with the material to align with the guide rod 5. The guide rod 5 extrude the material in the cavity 19 through the rod mold 8 to extrude the material. When the extruded material rotates to the feed port 18, the material rod continues to feed the material and ejects the extruded material from the cavity 19. The novel nut cold heading machine can not only perform continuous processing through multiple cavity molds 17 and the rotation setting, but also automatically complete the material cutting and ejection, which effectively improves the working efficiency of the nut cold heading machine. The rod mold 8 is detachably connected to the guide rod 5 by bolts, and the rod mold 8 is replaced by removing the bolts. When the cavity mold 17 needs to be replaced, the fourth reversing gear 30 is driven to rotate by the handle 32. The fourth reversing gear 30 drives the third reversing gears 29 on the four sides to rotate simultaneously through meshing, thereby driving the screw rods 27 on the four sides to rotate simultaneously, so that the screw rods 27 drive the locking rod 25 to move out of the locking groove 24 through threaded connection, so that the cavity mold 17 can be moved out of the installation groove 16, and then the cavity mold 17 to be installed is taken out, and the cavity mold 17 is inserted into the installation groove 16. The handle 32 is rotated in the opposite direction to insert the locking rod 25 into the locking groove 24 and press the cavity mold 17 tightly, so that the cavity mold 17 can be fixed in the installation groove 16. Through the installation structure of the cavity mold 17 and the rod mold 8, the rod mold 8 can be replaced. The multiple cavity molds 17 can be quickly replaced so as to process workpieces of different sizes, and the replacement efficiency of the cold heading machine mold is effectively improved. When the handle 32 needs to be turned to disassemble and assemble the cavity mold 17, the lifting frame 36 is driven by the lever 39 to overcome the elastic force of the spring 37 and move away from the locking gear 31, so that the locking tooth 38 is separated from the locking gear 31, and the handle 32 can be rotated. After the cavity mold 17 is replaced, the lever 39 is released, and the spring 37 pushes the lifting frame 36 to move toward the locking gear 31, so that the locking tooth 38 is meshed with the locking gear 31, and the locking gear 31 is locked by the lifting frame 36 and the locking tooth 38, so as to avoid the vibration generated by the operation of the equipment causing the handle 32 to automatically deflect, thereby causing the installation of the cavity mold 17 to become loose, thereby effectively improving the stability of the installation of the cavity mold 17.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel nut cold heading machine, comprising a base (1), characterized in that: The four corners of the bottom of the base (1) are symmetrically fixedly connected to supporting legs (2), and the upper part of the base (1) near the middle is fixedly connected to a support frame (3), wherein: A guide rod groove (4) is penetrated in the inner part of the support frame (3) near the top, and a guide rod (5) is penetrated in the guide rod groove (4). A bracket (6) is fixedly connected to the top of one end of the base (1), and a rotating wheel (7) is rotatably connected to the bracket (6) near the support frame (3). A rod mold (8) is installed at one end of the guide rod (5) near the rotating wheel (7). The guide rod (5) is driven to reciprocate left and right by a driving mechanism. The four sides of the rotating wheel (7) are symmetrically penetrated with installation grooves (16). A cavity mold (17) is installed in the mounting groove (16); a feed port (18) is penetrated at a position near the bottom of the bracket (6); a cavity (19) is penetrated in the cavity mold (17); a shaft end of the rotating wheel (7) away from the support frame (3) is fixedly connected to a first reversing gear (20); a second motor (21) is installed on the outer side of the bracket (6) corresponding to the first reversing gear (20); and a second reversing gear (22) is installed on the shaft end of the second motor (21) corresponding to the first reversing gear (20); The rotating wheel (7) is symmetrically provided with a locking rod groove (23) on the inner wall corresponding to the mounting groove (16); the cavity mold (17) is provided with a locking groove (24) on one side corresponding to the locking rod groove (23); a locking rod (25) is arranged inside the locking rod groove (23); a thread groove (26) is provided at one end of the locking rod (25) away from the mounting groove (16); a screw rod (27) is connected to the inner thread of the thread groove (26); a transmission groove (28) is provided at the middle part of the inner side of the rotating wheel (7); one end of the screw rod (27) located in the transmission groove (28) is fixedly connected to a third reversing gear (29), the transmission groove (28) is rotatably connected to the inner side of the third reversing gear (29), the fourth reversing gear (30) is fixedly connected to the shaft end of the fourth reversing gear (30) close to the outer side of the rotating wheel (7), the locking gear (31) is fixedly connected to the end of the locking gear (31) away from the fourth reversing gear (30), the rotating wheel (7) is provided with a locking mechanism for locking the fourth reversing gear (30), and the base (1) is penetrated by a discharge port (40) at a position between the support frame (3) and the rotating wheel (7).

2. The new nut cold heading machine according to claim 1 is characterized in that: The driving mechanism comprises a pulley frame (9), wherein the top of the base (1) close to the support frame (3) is fixedly connected to the pulley frame (9), the inner side of the pulley frame (9) is rotatably connected to a large pulley (10), a first motor (11) is mounted on the top of one end of the base (1) away from the bracket (6), a small pulley (12) is fixedly connected to the shaft end of the first motor (11) corresponding to the large pulley (10), the small pulley (12) and the large pulley (10) are connected via a transmission belt (13), a rocker (14) is fixedly connected to the shaft end of the large pulley (10), an end of the rocker (14) away from the large pulley (10) is rotatably connected to a transmission rod (15), and an end of the transmission rod (15) away from the rocker (14) is rotatably connected to a guide rod (5).

3. The new nut cold heading machine according to claim 2 is characterized in that: The rocker (14) is in transmission connection with the guide rod (5) via a transmission rod (15).

4. The new nut cold heading machine according to claim 1 is characterized in that: The vertical distance between the central axis of the rotating wheel (7) and the central axis of the cavity (19) is the same as the vertical distance between the central axis of the rotating wheel (7) and the central axis of the feed port (18).

5. The new nut cold heading machine according to claim 1 is characterized in that: The locking rod (25) is in the shape of a rectangular column, and the outer dimensions of the locking rod (25) match the inner dimensions of the locking groove (24).

6. The new nut cold heading machine according to claim 1 is characterized in that: The third reversing gear (29) is meshed with the fourth reversing gear (30), and the third reversing gear (29) corresponds to the screw rod (27) in a one-to-one manner.

7. The new nut cold heading machine according to claim 1 is characterized in that: The locking mechanism comprises a fixed frame (33), the rotating wheel (7) is fixedly connected to the fixed frame (33) at the outer side of the locking gear (31), the fixed frame (33) is penetrated by a guide groove (34), a guide rod (35) is penetrated in the guide groove (34), a lifting frame (36) is fixedly connected to the end of the guide rod (35) close to the locking gear (31), a spring (37) is sleeved on the guide rod (35) between the lifting frame (36) and the fixed frame (33), locking teeth (38) are fixedly connected to the top of the lifting frame (36) at equal distances, and a shifting rod (39) is fixedly connected to the side of the lifting frame (36) away from the rotating wheel (7).

8. The new nut cold heading machine according to claim 7 is characterized in that: The guide rod (35) is in the shape of a rectangular column, and the outer dimensions of the guide rod (35) coincide with the inner dimensions of the guide groove (34).

9. The new nut cold heading machine according to claim 7 is characterized in that: The tooth pitch of the locking teeth (38) is equal to the tooth pitch of the locking gear (31).

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