A cold heading machine for parts processing

Abstract

The present invention relates to the technical field of parts processing, and specifically to a cold heading machine for parts processing, the cold heading machine for parts processing comprising a machine base and a transfer belt and a stamping mechanism all arranged on the machine base, the transfer belt forming a closed conveying loop on the machine base, the number of transfer belts being two and symmetrically arranged; a plurality of stamping stations are arranged on the machine base, the plurality of stamping stations are arranged at equal intervals along the conveying direction of the transfer belt, and are all arranged between two transfer belts, the workpiece can be switched between the stamping stations under the drive of the two transfer belts; the stamping mechanism is configured to be able to stamp the workpiece at the stamping station. During use, the workpiece is first placed between the two transfer belts, and then the workpiece is driven to move by the two transfer belts, so that the workpiece can be flexibly clamped and the workpiece can be driven to switch between different stamping stations, and when the stamping mechanism stamps the workpiece, the friction strength between the workpiece and the transfer belt is small, which is conducive to improving the processing quality.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing, in particular to a cold heading machine for parts processing. Background Art

[0002] A cold heading machine is a highly efficient, automated, specialized machine tool used to manufacture bolts, nuts, rivets and other parts. Its working principle is to first place the blank in the mold of an automatic cold heading machine or press at room temperature, then apply pressure to the mold, and use the relative movement of the upper and lower molds to form the blank in the mold cavity.

[0003] In the related technology, for example, Chinese patent CN220591243U discloses a multi-station cold heading machine. When the multi-station cold heading machine is in use, the stamping mechanism can process the material in multiple processes, and the clamping mechanism can transfer the material; during the material transfer process, the manipulator clamps the material, the servo motor drives the connecting shaft to rotate, and the connecting shaft drives the cam to rotate. When the cam rotates, the sharp end of the cam's edge and the slide rod are pressed against each other, so as to utilize the reciprocating characteristics of the cam and drive the manipulator to reciprocate through the slide rod to realize the switching of the processing station.

[0004] Although the above-mentioned multi-station cold heading machine can improve the continuity of material processing to a certain extent, it is found in the actual processing process that the clamping mechanism still clamps the material after transferring the material to the next station, resulting in friction between the material and the clamping mechanism due to relative movement when the punch head punches the material. After stamping through multiple stations, the clamped parts of the material will produce greater wear, affecting the processing quality. Summary of the invention

[0005] Based on this, it is necessary to provide a cold heading machine for parts processing in order to solve the problem of poor quality in the current cold heading machine processing process.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A cold heading machine for parts processing, comprising a machine base, a conveyor belt and a punching mechanism both arranged on the machine base, the conveyor belt forming a closed conveying loop on the machine base, the number of the conveyor belts being two and symmetrically arranged; a plurality of punching stations are arranged on the machine base, the plurality of punching stations are arranged at equal intervals along the conveying direction of the conveyor belt, and are all arranged between two of the conveyor belts, and the workpiece can be switched between the punching stations under the drive of the two conveyor belts; the punching mechanism is configured to punch the workpiece at the punching station;

[0008] The two conveyor belts have a first state, a second state and a third state when working. When in the first state, the two conveyor belts are differentially driven to drive the workpiece to rotate while moving along the conveying direction of the conveyor belts, so as to realize the switching of the workpiece between different stamping stations; when in the second state, the two conveyor belts are driven at the same speed to drive the workpiece to rotate; when in the third state, the two conveyor belts stop driving to stamp the workpiece through the stamping mechanism; the cold heading machine for parts processing also includes an oil changing mechanism, which is configured to absorb the lubricating oil adhered to the outer peripheral wall of the workpiece when the conveyor belt is in the first state, and to apply the lubricating oil to the outer peripheral wall of the workpiece when the conveyor belt is in the second state;

[0009] A flexible clamping portion is disposed on the outer surface of each of the transport belts, and the flexible clamping portion is configured to flexibly clamp the workpiece.

[0010] Furthermore, the oil changing mechanism includes a mounting groove arranged on the machine base and an oil suction channel and an oil discharge channel both arranged on the conveyor belt. The number of the oil suction channels is multiple groups, and each group includes multiple channels. The multiple oil suction channels of the same group are arranged at intervals along the length direction of the conveyor belt, and the oil suction channels of different groups are arranged at intervals along the width direction of the conveyor belt; the number of the oil discharge channels is multiple groups, and each group includes multiple channels. The multiple oil discharge channels of the same group are arranged at intervals along the length direction of the conveyor belt, and the oil discharge channels of different groups are arranged at intervals along the width direction of the conveyor belt, and the oil discharge channels and the oil discharge channels are alternately arranged in a direction perpendicular to the width direction of the conveyor belt; each A first valve is provided in the oil extraction channel at one end away from the workpiece, and the first valve is configured to open or close the oil extraction channel; a second valve is provided in each of the oil discharge channels at one end away from the workpiece, and the second valve is configured to open or close the oil discharge channel; there are multiple mounting grooves, and they are arranged one-to-one corresponding to the oil extraction channel and the oil discharge channel, and a control board is slidably inserted in each of the mounting grooves, and a third valve is provided on the control board, and the third valve is configured to open the first valve or the second valve, so as to facilitate the suction of the lubricating oil adhered to the outer peripheral wall of the workpiece through the oil extraction channel or the application of the lubricating oil to the outer peripheral wall of the workpiece through the oil discharge channel.

[0011] Furthermore, the oil changing mechanism further includes a driving member, and the driving member is configured to provide a driving force for the control plate to slide inside the mounting groove.

[0012] Furthermore, the stamping mechanism includes fixed molds and movable molds, the number of which is equal to the stamping stations and which are arranged in a one-to-one correspondence, and the fixed mold is fixedly inserted on the machine base; the movable mold is inserted on the machine base, and can slide along a conveying direction perpendicular to the conveyor belt, and can cooperate with the corresponding fixed mold; each of the fixed molds is inserted with a fixed ejector rod, and the fixed ejector rod extends in an axial direction parallel to the workpiece, and can elastically slide relative to the fixed mold along the axial direction of the workpiece; each of the movable molds is inserted with a movable ejector rod, and the movable ejector rod extends in an axial direction parallel to the workpiece, and can elastically slide relative to the fixed mold along the axial direction of the workpiece.

[0013] Furthermore, a first oil change port is provided on the circumferential side wall of the moving push rod close to one end of the workpiece, and the first oil change port is configured to absorb the lubricating oil on the inner circumferential wall of the workpiece when the moving push rod moves inward, and to apply the lubricating oil to the inner circumferential wall of the workpiece when the moving push rod moves outward.

[0014] Furthermore, a second oil change port is provided on the circumferential side wall of the fixed ejector rod near one end of the workpiece, and the second oil change port is configured to absorb the lubricating oil on the inner circumferential wall of the workpiece when the fixed ejector rod moves inward, and to apply the lubricating oil to the inner circumferential wall of the workpiece when the fixed ejector rod moves outward.

[0015] Furthermore, the flexible clamping portion includes an annular airbag, which is sleeved on the outside of the conveyor belt and is filled with gas when in use.

[0016] Furthermore, the cold heading machine for parts processing also includes a driving mechanism, and the driving mechanism is configured to provide a driving force for the movement of the transfer belt.

[0017] The beneficial effects of the present invention are:

[0018] When a cold heading machine for parts processing provided by the present invention is used, the workpiece is first placed between two conveyor belts, and then the workpiece is driven to move to the first stamping station by the two conveyor belts, and then the workpiece is stamped by the stamping mechanism, and then the workpiece is driven to move to the second stamping station by the two conveyor belts, and the workpiece is stamped by the stamping mechanism, and the process of the conveyor belt driving the workpiece to move and the stamping mechanism stamping the workpiece is repeated until the workpiece is stamped. By setting two conveyor belts to drive the workpiece to move, not only can the workpiece be flexibly clamped, but also when the stamping mechanism stamps the workpiece, the friction strength between the workpiece and the conveyor belt can be reduced, thereby improving the processing quality.

[0019] Furthermore, by arranging an oil-changing mechanism, when the conveyor belt is in the first state, the differential transmission between the two conveyor belts can drive the workpiece to rotate and move along the conveying direction of the conveyor belt, thereby realizing the switching of the workpiece between different stamping stations and fully absorbing the lubricating oil adhered to the outer wall of the workpiece; when the conveyor belt is in the second state, the two conveyor belts can drive the workpiece to rotate at the same speed, thereby improving the uniformity of lubricating oil application.

[0020] Furthermore, by arranging a first oil change port on the fixed ejector rod, the lubricating oil on the inner circumferential wall of the workpiece can be absorbed when the fixed ejector rod moves inward, and the lubricating oil can be applied to the inner circumferential wall of the workpiece when the fixed ejector rod moves outward, thereby enabling the lubricating oil to be replaced in time to avoid affecting the processing performance of the workpiece.

[0021] Furthermore, by providing a second oil change port on the movable ejector rod, the lubricating oil on the inner circumferential wall of the workpiece can be absorbed when the movable ejector rod moves inward, and the lubricating oil can be applied to the inner circumferential wall of the workpiece when the movable ejector rod moves outward, thereby enabling the lubricating oil to be replaced in time to avoid affecting the processing performance of the workpiece.

[0022] Furthermore, by providing a flexible clamping portion on the outer surface of the transfer belt, it is helpful to further reduce the friction intensity between the workpiece and the transfer belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a cold heading machine for parts processing provided by one embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the exploded parts of a cold heading machine for parts processing without a machine base provided in one embodiment of the present invention;

[0025] Figure 3 A schematic cross-sectional view of a cold heading machine for parts processing without a machine base provided in one embodiment of the present invention;

[0026] Figure 4 for Figure 3 The AA section view is shown in the middle;

[0027] Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure at B in the middle;

[0028] Figure 6 A schematic diagram of the three-dimensional structure of a conveyor belt of a cold heading machine for parts processing provided by one embodiment of the present invention;

[0029] Figure 7 A schematic three-dimensional structural diagram of a dynamic ejector of a cold heading machine for parts processing provided by one embodiment of the present invention.

[0030] in:

[0031] 1. Machine base; 11. Mounting frame; 111. Mounting slot; 12. Control panel; 13. Driving cylinder; 14. Third valve; 15. First oil pump; 16. First oil pump; 17. Mounting plate; 18. Rotating shaft;

[0032] 2. Transfer belt; 201. Oil extraction channel; 202. Oil discharge channel; 21. Annular airbag; 22. First valve; 23. Second valve;

[0033] 3. Moving mold; 31. Moving ejector; 311. First oil change port; 312. First communication port;

[0034] 4. Fixed mold; 41. Fixed ejector pin;

[0035] 5. Driving mechanism; 51. Driving motor; 52. Transmission belt. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned herein, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, 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 therefore cannot be understood as a limitation to the present invention.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] like Figures 1 to 7As shown in the figure, a cold heading machine for part processing provided by an embodiment of the present invention is used to process workpieces, and is configured to include a machine base 1, a conveyor belt 2 and a stamping mechanism, both of which are arranged on the machine base 1. The conveyor belt 2 forms a closed conveying loop on the machine base 1. There are two conveyor belts 2 and they are symmetrically arranged. A plurality of stamping stations are arranged on the machine base 1. The plurality of stamping stations are arranged at equal intervals along the conveying direction of the conveyor belt 2 and are all arranged between the two conveyor belts 2. Driven by the two conveyor belts 2, the workpiece can be switched between the stamping stations. The stamping mechanism is configured to be able to stamp the workpiece at the stamping station.

[0040] Specifically, in this embodiment, as Figure 1 shown, the machine base 1 is arranged as a box structure with an open top, and has a length direction and a width direction that are vertically arranged. To facilitate the installation of the conveyor belt 2, a mounting frame 11 is inserted inside the machine base 1. As Figure 3 shown, the mounting frame 11 is arranged as a "C"-shaped frame structure, and is arranged with the opening facing downwards and the "C" surface parallel to the width direction of the machine base 1 during installation. Four rotating shafts 18 are inserted inside the mounting frame 11. The rotating shafts 18 can rotate around their own axes, and are arranged with the axes of the rotating shafts 18 perpendicular to the "C" surface during installation. The four rotating shafts 18 are grouped in pairs, and the two groups are arranged at intervals in the vertical direction. The two in the same group are respectively arranged at the left and right ends of the mounting frame 11 in the horizontal direction. A rotating wheel is fixedly sleeved on each rotating shaft 18. The conveyor belt 2 is arranged to be driven and sleeved on one rotating wheel of the same group at one end and driven and sleeved on the other rotating wheel of the same group at the other end during installation.

[0041] During the use process, as Figure 3 shown, first drive the upper conveyor belt 2 to rotate counterclockwise, and at the same time drive the lower conveyor belt 2 to rotate clockwise. Then place the workpieces between the two conveyor belts 2 in sequence from the left side of the mounting frame 11. Since the stamping process of each workpiece is basically the same, for the convenience of description, take one workpiece as an example. As the two conveyor belts 2 move, the two conveyor belts 2 clamp the workpiece and drive the workpiece to move to the first stamping station, and then stamp the workpiece through the stamping mechanism. Then drive the workpiece to move to the second stamping station through the two conveyor belts 2, and stamp the workpiece through the stamping mechanism. Repeat the process of the conveyor belt 2 driving the workpiece to move and the stamping mechanism stamping the workpiece until the workpiece stamping is completed. By setting the method of driving the workpiece to move by the two conveyor belts 2, not only can the workpiece be flexibly clamped, but also when the stamping mechanism stamps the workpiece, the friction strength between the workpiece and the conveyor belt 2 can be made smaller, which is beneficial to improving the processing quality.

[0042] In some embodiments, when a workpiece is stamped at any stamping station, due to the high temperature and high pressure environment in which it is located, the lubricating oil may deteriorate and become ineffective during the stamping process, which may not only affect the subsequent stamping quality of the current workpiece, but also reduce the stamping quality of the next workpiece. To solve this problem, two conveyor belts 2 are configured to have a first state, a second state and a third state when working. When in the first state, the two conveyor belts 2 are differentially driven to drive the workpiece to rotate while moving along the conveying direction of the conveyor belt 2 to achieve the switching of the workpiece between different stamping stations; when in the second state, the two conveyor belts 2 are driven at the same speed to drive the workpiece to rotate; when in the third state, the two conveyor belts 2 stop driving to stamp the workpiece through the stamping mechanism; the cold heading machine for parts processing is configured to also include an oil changing mechanism, which is configured to be able to absorb the lubricating oil adhering to the outer peripheral wall of the workpiece when the conveyor belt 2 is in the first state, and to apply the lubricating oil to the outer peripheral wall of the workpiece when the conveyor belt 2 is in the second state.

[0043] Specifically in this embodiment, Figure 3 As shown, when the conveyor belt 2 is in the first state, it can be set that the upper conveyor belt 2 rotates in the counterclockwise direction and the lower conveyor belt 2 does not move, or it can be set that the upper conveyor belt 2 rotates in the counterclockwise direction at a first conveying speed and the lower conveyor belt 2 rotates in the clockwise direction at a second conveying speed, wherein the second conveying speed is less than the first conveying speed, or it can be set that the lower conveyor belt 2 rotates in the clockwise direction at the first conveying speed and the upper conveyor belt 2 rotates in the counterclockwise direction at the second conveying speed; when the conveyor belt 2 is in the second state, it can be set that the two conveyor belts 2 rotate in the counterclockwise direction at the same speed, or it can be set that the two conveyor belts 2 rotate in the clockwise direction at the same speed; when the conveyor belt 2 is in the third state, the two conveyor belts 2 stop transmission.

[0044] During use, the two conveyor belts 2 are first placed in the first state, so that the differential transmission between the two conveyor belts 2 drives the workpiece to rotate while moving along the conveying direction of the conveyor belt 2, thereby realizing the switching of the workpiece between different stamping stations, and at the same time, the lubricating oil adhered to the outer wall of the workpiece is adsorbed by the oil changing mechanism; when the workpiece moves to the next stamping station, the two conveyor belts 2 are switched to the second state, so that the workpiece is driven to rotate through the same speed transmission of the two conveyor belts 2, and at the same time, the lubricating oil is coated on the outer wall of the workpiece through the oil changing mechanism, thereby realizing automatic replacement of the lubricating oil; after coating is completed, the two conveyor belts 2 are switched to the third state, the two conveyor belts 2 stop transmission, and then the workpiece is stamped by the stamping mechanism.

[0045] In a further embodiment, the oil changing mechanism is configured to include a mounting groove 111 provided on the machine base 1 and an oil suction channel 201 and an oil discharge channel 202 both provided on the transfer belt 2. The number of the oil suction channels 201 is multiple groups, each group includes multiple oil suction channels 201, and the multiple oil suction channels 201 of the same group are arranged at intervals along the length direction of the transfer belt 2, and the oil suction channels 201 of different groups are arranged at intervals along the width direction of the transfer belt 2; the number of the oil discharge channels 202 is multiple groups, each group includes multiple oil discharge channels 202, and the multiple oil discharge channels 202 of the same group are arranged at intervals along the length direction of the transfer belt 2, and the oil discharge channels 202 of different groups are arranged at intervals along the width direction of the transfer belt 2, and the oil discharge channels 202 and the oil discharge channels 202 are arranged alternately along the width direction of the transfer belt 2; each A first valve 22 is provided in each oil extraction channel 201 at one end away from the workpiece, and the first valve 22 is configured to open or close the oil extraction channel 201; a second valve 23 is provided in each oil discharge channel 202 at one end away from the workpiece, and the second valve 23 is configured to open or close the oil discharge channel 202; there are multiple mounting grooves 111, and they are arranged one by one corresponding to the oil extraction channels 201 and the oil discharge channels 202, and a control board 12 is slidably inserted in each mounting groove 111, and a third valve 14 is provided on the control board 12, and the third valve 14 is configured to open the first valve 22 or the second valve 23, so as to suck the lubricating oil adhered to the outer peripheral wall of the workpiece through the oil extraction channel 201 or apply the lubricating oil to the outer peripheral wall of the workpiece through the oil discharge channel 202.

[0046] Specifically in this embodiment, Figure 5 and Figure 6 As shown, the oil pumping channel 201 and the oil discharge channel 202 are both configured as hole-like structures so as to connect the upper and lower end surfaces of the belt-like portion on the same side of the transfer belt 2; the mounting groove 111 is provided on the mounting frame 11, and is arranged one-to-one with the oil pumping channel 201 and the oil discharge channel 202; the control board 12 is configured as a plate-like structure with an open bottom, and the third valve 14 is blocked at the open bottom of the control board 12 to form a closed chamber; in order to facilitate the provision of driving force for oil exchange in the oil pumping channel 201 and the oil discharge channel 202, the cold heading machine for parts processing is configured to also include a first oil pump 15 and a first oil discharge pump 16, as shown in FIG. Figure 3 As shown, the first oil pump 15 and the first oil discharge pump 16 are both installed on the top of the mounting frame 11, and the oil suction end of the first oil pump 15 is simultaneously connected to the bottom closed chamber of the control board 12 corresponding to all the oil suction channels 201, and the oil discharge end of the first oil discharge pump 16 is simultaneously connected to the bottom closed chamber of the control board 12 corresponding to all the oil discharge channels 202; in order to facilitate the collection of old lubricating oil and the release of new lubricating oil, the cold heading machine for parts processing is configured to also include a recovery barrel and an oil storage barrel both installed on the machine base 1, wherein the oil discharge end of the first oil pump 15 is connected to the recovery barrel, and the oil suction end of the second oil discharge pump is connected to the oil storage barrel.

[0047] When in use, firstly, the two conveyor belts 2 are placed in the first state, so as to drive the workpiece to rotate while moving along the conveying direction of the conveyor belts 2 through the differential transmission between the two conveyor belts 2. During the movement of the workpiece, the first oil pump 15 is started synchronously, and then the control board 12 corresponding to the oil pumping channel 201 along the moving direction of the workpiece is driven in turn to move in the direction close to the workpiece, so that the third valve 14 can open the first valve 22, so that the first oil pump 15 can continuously suck the lubricating oil adhered to the outer peripheral wall of the workpiece through the oil pumping channel 201; when the workpiece moves to the next stamping station, the two conveyor belts 2 are switched to the second state, so as to drive the workpiece to rotate through the same speed transmission of the two conveyor belts 2, and at the same time, the first oil discharge pump 16 is started, and the control board 12 of the oil discharge channel 202 corresponding to the stamping station is driven to move in the direction close to the workpiece, so that the third valve 14 can open the second valve 23, so that the first oil discharge pump 16 can apply the lubricating oil in the oil storage barrel to the outer peripheral wall of the workpiece through the oil discharge channel 202.

[0048] In a further embodiment, the oil changing mechanism is configured to further include a driving member, and the driving member is configured to provide a driving force for the control plate 12 to slide inside the mounting groove 111 .

[0049] Specifically in this embodiment, Figure 5 As shown, the driving member is configured to include a plurality of driving cylinders 13. The driving cylinders 13 are configured to be inserted into the mounting grooves 111 one by one during installation. Taking one driving cylinder 13 as an example, the output shaft of the driving cylinder 13 is vertically downwardly arranged and fixedly connected to the top of the control board 12 so as to drive the control board 12 to slide inside the mounting groove 111.

[0050] It can be understood that the driving cylinder 13 can be configured as any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0051] In other embodiments, the stamping mechanism is configured to include a fixed mold 4 and a movable mold 3, which are equal in number to the stamping stations and are arranged one-to-one, and the fixed mold 4 is fixedly inserted on the machine base 1; the movable mold 3 is inserted on the machine base 1, and can slide along a conveying direction perpendicular to the conveyor belt 2, and can cooperate with the corresponding fixed mold 4; each fixed mold 4 is inserted with a fixed ejector rod 41, the fixed ejector rod 41 extends in an axial direction parallel to the workpiece, and can elastically slide relative to the fixed mold 4 along the axial direction of the workpiece; each movable mold 3 is inserted with a movable ejector rod 31, the movable ejector rod 31 extends in an axial direction parallel to the workpiece, and can elastically slide relative to the fixed mold 4 along the axial direction of the workpiece.

[0052] Specifically in this embodiment, Figure 2As shown, in order to facilitate the installation of the fixed mold 4, a mounting plate 17 is also inserted inside the machine base 1. When installed, the mounting plate 17 is arranged to be parallel to the plate surface and the width direction of the machine base 1. When installed, multiple fixed molds 4 are arranged to be fixedly inserted on the mounting plate 17 at equal intervals along the width direction of the machine base 1; in order to facilitate the provision of a driving force for the elastic sliding of the movable ejector 31, the stamping mechanism is arranged to also include a plurality of first compression springs, which are inserted one-to-one into the movable mold 3 and are sleeved one-to-one on the movable ejector 31. Under the action of the first compression springs, the movable ejector 31 has a tendency to extend out of the movable mold 3; in order to facilitate the provision of a driving force for the elastic sliding of the fixed ejector 41, the stamping mechanism is arranged to also include a plurality of second compression springs, which are inserted one-to-one into the fixed mold 4 and are sleeved one-to-one on the fixed ejector 41. Under the action of the second compression springs, the fixed ejector 41 has a tendency to extend out of the fixed mold 4.

[0053] It can be understood that the mechanism for driving the movable die 3 to reciprocate can be set to be the same as the mechanism used in the existing cold heading machine.

[0054] In a further embodiment, in order to further improve the replacement ratio of the lubricating oil on the workpiece, a first oil change port 311 is provided on the circumferential side wall of the movable push rod 31 close to one end of the workpiece. The first oil change port 311 is configured to absorb the lubricating oil on the inner circumferential wall of the workpiece when the movable push rod 31 moves inward, and to apply the lubricating oil to the inner circumferential wall of the workpiece when the movable push rod 31 moves outward.

[0055] Specifically in this embodiment, Figure 7 As shown, the movable push rod 31 is configured as a T-shaped hollow circular rod structure, and the first oil change port 311 is opened on the circumferential side wall of the small end of the movable push rod 31. There are multiple first oil change ports 311 and they are evenly arranged, and a first connecting port 312 is provided on the circumferential side wall of the large end of the movable push rod 31, and the first connecting port 312 is connected to the first oil change port 311; in order to facilitate the provision of driving force for oil change at the first oil change port 311, the cold heading machine for parts processing is configured to also include a second oil suction pump and a second oil discharge pump, the second oil suction pump and the second oil discharge pump are both installed on the machine base 1, and the oil suction end of the second oil suction pump is connected to all the first connecting ports 312, the oil discharge end of the second oil suction pump is connected to the recovery barrel, the oil discharge end of the second oil discharge pump is connected to all the first connecting ports 312, and the oil suction end of the second oil discharge pump is connected to the oil storage barrel.

[0056] During use, when the movable push rod 31 moves inward, the second oil pump is started, and the second oil pump sucks the lubricating oil on the inner wall of the workpiece through the first oil change port 311; when the movable push rod 31 moves outward, the second oil pump is started, and the second oil pump applies the lubricating oil in the oil storage barrel to the inner wall of the workpiece through the first oil change port 311.

[0057] In other embodiments, in order to further improve the replacement ratio of the lubricating oil on the workpiece, a second oil change port is provided on the circumferential side wall of the fixed push rod 41 close to one end of the workpiece. The second oil change port is configured to absorb the lubricating oil on the inner circumferential wall of the workpiece when the fixed push rod 41 moves inward, and to apply the lubricating oil to the inner circumferential wall of the workpiece when the fixed push rod 41 moves outward.

[0058] Specifically in this embodiment, Figure 2 As shown, the fixed ejector rod 41 can be configured to have the same structure as the dynamic ejector rod 31, and the second oil change port is opened on the circumferential side wall of the small end of the fixed ejector rod 41. There are multiple second oil change ports, which are evenly arranged. A second connecting port is provided on the circumferential side wall of the large end of the fixed ejector rod 41, and the second connecting port is connected to the second oil change port; the oil suction end of the second oil pump is connected to all the second connecting ports, and the oil discharge end of the second oil discharge pump is connected to all the second connecting ports.

[0059] During use, when the fixed ejector rod 41 moves inward, the second oil pump is started, and the second oil pump sucks the lubricating oil on the inner wall of the workpiece through the second oil change port; when the fixed ejector rod 41 moves outward, the second oil pump is started, and the second oil pump applies the lubricating oil in the oil storage barrel to the inner wall of the workpiece through the second oil change port.

[0060] In other embodiments, in order to further reduce the friction intensity between the workpiece and the conveyor belt 2, a flexible clamping portion is provided on the outer surface of each conveyor belt 2, and the flexible clamping portion is configured to be able to flexibly clamp the workpiece.

[0061] Specifically in this embodiment, the flexible clamping portion can be configured to include an annular airbag 21, which is sleeved on the outside of the conveyor belt 2 and is filled with gas when in use.

[0062] More specifically, the number of the annular airbags 21 can be set to be multiple, and they can be arranged at intervals along the width direction of the conveyor belt 2 to improve the stability when clamping the workpiece.

[0063] Exemplary, such as Figure 6 As shown, the number of the annular airbags 21 can be four, and they are arranged at equal intervals along the width direction of the transfer belt 2.

[0064] In a further embodiment, Figure 5 As shown, the oil extraction channel 201 and the oil discharge channel 202 are both arranged to penetrate the annular airbag 21 , and each group of the oil extraction channel 201 and each group of the oil discharge channel 202 are arranged in a one-to-one correspondence with the annular airbag 21 .

[0065] In other embodiments, the flexible clamping portion may also be configured to include a plurality of rubber strips, and the plurality of rubber strips are arranged to be spaced apart along the width direction of the transfer belt 2 during installation.

[0066] In other embodiments, the cold heading machine for parts processing is configured to further include a driving mechanism 5 , and the driving mechanism 5 is configured to provide a driving force for the movement of the transfer belt 2 .

[0067] Specifically in this embodiment, the driving mechanism 5 is configured to include two driving motors 51, two transmission belts 52 and four pulleys. Figure 3 As shown, the two drive motors 51 are arranged to be spaced apart in the horizontal direction at the top of the mounting frame 11 during installation; two of the pulleys are respectively fixedly sleeved on the motor shafts of the two drive motors 51, and the other two pulleys are respectively fixedly sleeved on the two rotating shafts 18 located on the right side; one end of one of the transmission belts 52 is transmission sleeved on the pulley of the drive motor 51 located on the left, and the other end is transmission sleeved on the pulley of the rotating shaft 18 located below, and one end of the other transmission belt 52 is transmission sleeved on the pulley of the drive motor 51 located on the right, and the other end is transmission sleeved on the pulley of the rotating shaft 18 located above.

[0068] When in use, the driving motor 51 drives the pulley to rotate through the transmission belt 52, the pulley drives the rotating wheel to rotate through the rotating shaft 18, and the rotating wheel drives the transfer belt 2 to rotate.

[0069] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A cold heading machine for parts processing, characterized in that: The cold heading machine for parts processing comprises a machine base, a conveyor belt and a stamping mechanism which are both arranged on the machine base, the conveyor belt forms a closed conveying loop on the machine base, and there are two conveyor belts which are symmetrically arranged; a plurality of stamping stations are arranged on the machine base, the plurality of stamping stations are arranged at equal intervals along the conveying direction of the conveyor belt, and are all arranged between two conveyor belts, and the workpiece can be switched between the stamping stations under the drive of the two conveyor belts; the stamping mechanism is configured to be able to stamp the workpiece at the stamping station; The two conveyor belts have a first state, a second state and a third state when working. When in the first state, the two conveyor belts are differentially driven to drive the workpiece to rotate while moving along the conveying direction of the conveyor belts, so as to realize the switching of the workpiece between different stamping stations; when in the second state, the two conveyor belts are driven at the same speed to drive the workpiece to rotate; when in the third state, the two conveyor belts stop driving to stamp the workpiece through the stamping mechanism; the cold heading machine for parts processing also includes an oil changing mechanism, which is configured to absorb the lubricating oil adhered to the outer peripheral wall of the workpiece when the conveyor belt is in the first state, and to apply the lubricating oil to the outer peripheral wall of the workpiece when the conveyor belt is in the second state; A flexible clamping portion is disposed on the outer surface of each of the transport belts, and the flexible clamping portion is configured to flexibly clamp the workpiece.

2. The cold heading machine for parts processing according to claim 1, characterized in that: The oil changing mechanism comprises a mounting groove arranged on the machine base and an oil suction channel and an oil discharge channel both arranged on the conveyor belt. The number of the oil suction channels is multiple groups, and each group comprises multiple channels. The multiple oil suction channels of the same group are arranged at intervals along the length direction of the conveyor belt, and the oil suction channels of different groups are arranged at intervals along the width direction of the conveyor belt. The number of the oil discharge channels is multiple groups, and each group comprises multiple channels. The multiple oil discharge channels of the same group are arranged at intervals along the length direction of the conveyor belt, and the oil discharge channels of different groups are arranged at intervals along the width direction of the conveyor belt, and the oil discharge channels and the oil discharge channels are alternately arranged in a direction perpendicular to the width direction of the conveyor belt. Each of the oil suction channels A first valve is provided at one end of the channel away from the workpiece, and the first valve is configured to open or close the oil extraction channel; a second valve is provided at one end of each of the oil discharge channels away from the workpiece, and the second valve is configured to open or close the oil discharge channel; there are multiple mounting grooves, and they are arranged one-to-one corresponding to the oil extraction channels and the oil discharge channels, and a control board is slidably inserted in each of the mounting grooves, and a third valve is provided on the control board, and the third valve is configured to open the first valve or the second valve, so as to facilitate the suction of the lubricating oil adhered to the outer peripheral wall of the workpiece through the oil extraction channel or the application of the lubricating oil to the outer peripheral wall of the workpiece through the oil discharge channel.

3. The cold heading machine for parts processing according to claim 2, characterized in that: The oil changing mechanism further includes a driving member configured to provide a driving force for the control plate to slide inside the mounting groove.

4. The cold heading machine for parts processing according to claim 1, characterized in that: The stamping mechanism includes fixed molds and movable molds, the number of which is equal to the stamping stations and which are arranged in a one-to-one correspondence. The fixed mold is fixedly inserted on the machine base; the movable mold is inserted on the machine base and can slide along a conveying direction perpendicular to the conveyor belt and can cooperate with the corresponding fixed mold; a fixed ejector rod is inserted in each of the fixed molds, and the fixed ejector rod extends in an axial direction parallel to the workpiece and can elastically slide relative to the fixed mold along the axial direction of the workpiece; a movable ejector rod is inserted in each of the movable molds, and the movable ejector rod extends in an axial direction parallel to the workpiece and can elastically slide relative to the fixed mold along the axial direction of the workpiece.

5. The cold heading machine for parts processing according to claim 4, characterized in that: A first oil change port is provided on the circumferential side wall of the moving push rod close to one end of the workpiece, and the first oil change port is configured to absorb the lubricating oil on the inner circumferential wall of the workpiece when the moving push rod moves inward, and to apply the lubricating oil to the inner circumferential wall of the workpiece when the moving push rod moves outward.

6. The cold heading machine for parts processing according to claim 4, characterized in that: A second oil change port is provided on the circumferential side wall of the fixed ejector rod near one end of the workpiece, and the second oil change port is configured to absorb the lubricating oil on the inner circumferential wall of the workpiece when the fixed ejector rod moves inward, and to apply the lubricating oil to the inner circumferential wall of the workpiece when the fixed ejector rod moves outward.

7. The cold heading machine for parts processing according to claim 1, characterized in that: The flexible clamping portion comprises an annular airbag which is sleeved on the outside of the conveyor belt and is filled with gas when in use.

8. The cold heading machine for parts processing according to claim 1, characterized in that: The cold heading machine for parts processing further includes a driving mechanism, which is configured to provide a driving force for the movement of the transfer belt.

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