Thread rolling device of thread rolling machine and thread rolling machine

Abstract

The utility model provides a thread rolling device of a thread rolling machine and the thread rolling machine. The thread rolling device comprises a peeling assembly, a thread rolling assembly, a gearbox, a motor, an end face cutting assembly and a tool retracting assembly. The peeling assembly, the thread rolling assembly, the gearbox and the motor are sequentially arranged from far to near relative to a to-be-treated steel bar. The output end of the motor is connected with a power input shaft of the gearbox, and the low-speed output end of the gearbox is connected with the thread rolling assembly. A hollow cam shaft arranged on the power input shaft in a sleeving mode is arranged in the gearbox. The power input shaft penetrates through the hollow cam shaft and is connected with the end face cutting assembly. The tool retracting assembly comprises a tool retracting control ring, a jacking column and a guide block. The top of the tool retracting control ring is rotatably connected to a shell of the gearbox, and the middle of the tool retracting control ring is connected with the end face cutting assembly. One end of the top column is rotatably arranged on the motor; in the machining state, the end, away from the motor, of the jacking column abuts against the bottom of the tool retracting control ring. And after cutting is completed, the jacking column is separated from the guide block. The device can realize a tool retracting function.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar processing, and in particular, to a rolling device and a rolling machine for a thread rolling machine. Background Art

[0002] A steel bar thread rolling machine is a commonly used device in the construction industry. It is used for two major processes of rib peeling and thread rolling of steel bars, and has the advantages of simple operation and good thread profile of the processed threads. It can be used to process steel bars with threads at the ends.

[0003] In related technologies, in order to make the steel bar cut meet the specification requirements, some steel bar thread rolling machines are equipped with an end face cutting tool, which is used to cut the end face of the steel bar at the cut after the steel bar thread rolling is completed. However, the current steel bar thread rolling machines lack a tool retraction function. When retracting the thread after the steel bar thread rolling cutting work is completed, the end face cutting tool is prone to collide with the steel bar and be damaged.

[0004] In view of this, the present application is specifically proposed. Summary of the Utility Model

[0005] In consideration of the above problems, the present application is proposed. According to one aspect of the present application, a rolling device for a thread rolling machine is provided, including: a peeling assembly, a thread rolling assembly, a gearbox, a motor, an end face cutting assembly, and a tool retraction assembly; the peeling assembly, the thread rolling assembly, the gearbox, and the motor are arranged in sequence from far to near relative to the steel bar to be processed; the output end of the motor is connected to the power input shaft of the gearbox, and the low-speed output end of the gearbox is connected to the thread rolling assembly; a hollow camshaft is arranged in the gearbox, and the hollow camshaft is sleeved on the power input shaft; the power input shaft passes through the hollow camshaft and is connected to the end face cutting assembly; the tool retraction assembly includes a tool retraction control ring, a top column, and a guide block; the top of the tool retraction control ring is rotatably connected to the outer shell of the gearbox, and the middle part of the tool retraction control ring is connected to the end face cutting assembly; one end of the top column is rotatably arranged on the motor; wherein, when the rolling device is in a state of processing the steel bar to be processed, the top column is placed above the guide block and can slide relative to the guide block, and the end of the top column away from the motor abuts against the bottom of the tool retraction control ring to make the tool retraction control ring tilt in a direction away from the motor; when the cutting of the steel bar to be processed is completed, the top column disengages from the guide block and rotates downward relative to the motor; the tool retraction control ring rotates in a direction close to the motor to drive the end face cutting assembly to move away from the steel bar to be processed.

[0006] Exemplarily, a first fixing bracket is connected to the motor, a rotating shaft is arranged on the first fixing bracket, and the end of the top column is rotatably arranged on the motor through the rotating shaft.

[0007] Exemplarily, the tool retraction assembly further includes a fork and a limit block. There are two forks, which are respectively arranged on both sides of the ejector pin and fixedly connected to the rotating shaft to rotate with the rotating shaft; the limit blocks correspond to the forks one by one, and there is a gap between the limit block and the guide block in the front-rear direction; wherein, when the cutting of the reinforcing bar to be processed is completed, the fork contacts the limit block.

[0008] Exemplarily, a hollow slot is provided at one end of the power input shaft close to the motor; the tool retraction assembly further includes a sliding clutch adjustment column and an adjustment bearing, and the adjustment bearing is sleeved outside the hollow slot; a chute is provided on the side wall of the hollow slot, and the sliding clutch adjustment column includes a column body and a sliding pin. The column body is arranged inside the hollow slot, one end of the sliding pin is connected to the column body, and the other end passes through the chute and is connected to the adjustment bearing; the end face cutting assembly is connected to the column body; wherein, when the tool retraction control ring rotates in the direction close to the motor, it drives the adjustment bearing and the sliding clutch adjustment column to move away from the reinforcing bar to be processed.

[0009] Exemplarily, the end face cutting assembly includes a cutting tool bar, a cutting tool seat and an end face cutting tool; one end of the cutting tool bar far from the reinforcing bar to be processed is connected to the power input shaft and the column body, and the cutting tool bar has the freedom to move back and forth relative to the power input shaft; one end of the cutting tool bar close to the reinforcing bar to be processed is connected to the cutting tool seat, and the end face cutting tool is fixed on the cutting tool seat; the power input shaft drives the cutting tool bar to rotate, so that the end face cutting tool cuts the end of the reinforcing bar to be processed when it contacts the end of the reinforcing bar to be processed.

[0010] Exemplarily, a socket slot is opened inside one end of the cutting tool bar close to the power input shaft, and the power input shaft is connected to the cutting tool bar through the socket slot.

[0011] Exemplarily, the shape of the socket slot is polygonal, and one end of the power input shaft is formed with a socket block adapted to the shape of the socket slot, and the socket block is inserted into the socket slot.

[0012] Exemplarily, a connecting rod is arranged in the socket slot, and the connecting rod passes through the power input shaft and is threadedly connected to the column body.

[0013] Exemplarily, a second fixing bracket is arranged inside the housing of the gearbox, and the top of the tool retraction control ring is rotatably connected to the second fixing bracket.

[0014] According to another aspect of the present application, a thread rolling machine is provided, which includes a box body, a clamping mechanism, and the thread rolling device described in any of the above embodiments; both the clamping mechanism and the thread rolling device are arranged on the box body.

[0015] Compared with the prior art, by providing a tool retraction assembly in the above technical solution, the tool retraction control ring in the tool retraction assembly can be used to control the end face cutting assembly to move away from the steel bar to be processed after cutting is completed, so as to realize the tool retraction function. Thus, the phenomenon of tool breakage can be avoided after cutting is completed, tool damage can be avoided, and the overall service life of the device can be prolonged.

[0016] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0018] Figure 1 is a schematic diagram of the overall structure of the thread rolling device according to an embodiment of the present application;

[0019] Figure 2 is Figure 1 the internal cross-sectional view of the device in;

[0020] Figure 3 is a schematic diagram of the structure of the tool retraction assembly according to an embodiment of the present application;

[0021] Figure 4 is Figure 3 the internal cross-sectional view of the structure in;

[0022] Figure 5 is a schematic diagram of the structure of the tool retraction control ring according to an embodiment of the present application;

[0023] Figure 6 is a schematic diagram of the structure of the cutting tool bar according to an embodiment of the present application;

[0024] Figure 7 is a cross-sectional view of the thread rolling machine according to an embodiment of the present application.

[0025] In the figure: 1. Electric motor; 2. Gearbox; 201. Housing; 202. Second fixing bracket; 203. Hollow camshaft; 204. Power input shaft; 205. Hollow slot; 206. Chute; 3. Thread rolling assembly; 4. Peeling assembly; 501. Rotating shaft; 502. Fork; 503. Thrust pillar; 504. Retracting tool control ring; 505. Guide block; 506. Limit block; 507. First fixing bracket; 508. Cylinder; 509. Adjusting bearing; 510. Sliding pin; 601. Cutting tool bar; 602. Cutting tool holder; 603. Connecting rod; 604. Insertion slot; 7. Clamping mechanism; 8. Box body; 9. Roller. Detailed implementation manners

[0026] In the following description, a large number of details are provided to enable a thorough understanding of the present application. However, those skilled in the art can understand that the following description only relates to the preferred embodiments of the present application, and the present application can be implemented without one or more such details. In addition, to avoid confusion with the present application, some technical features well known in the art are not described.

[0027] As described above, in the related art, in order to make the steel bar cut meet the specification requirements, some thread rolling machines for steel bars are equipped with an end cutting tool, which is used to cut the end of the steel bar after thread rolling. Taking the Chinese invention patent with the publication number CN114404353B as an example for illustration, this patent discloses a transmission device with through-hole cooling and dual-speed power output for a thread rolling machine, including a peeling device, a thread rolling device, a gearbox, an electric motor, a first guide rail, a tailstock, and a flattening device. The rotating shaft of the electric motor and the hollow camshaft of the gearbox are both hollow rotating shafts. One end of the flattening device passes through the channels formed by the thread rolling device, the hollow camshaft of the gearbox, and the rotating shaft of the electric motor and is connected to the liquid outlet pipe of the tailstock, and the other end is connected to the hollow camshaft of the gearbox through a key and a keyway. The coolant can enter the equipment through the flattening device to cool the inside of the equipment. The coolant then sprays out from the liquid outlet at the front end of the flattening device, which can cool the cutting tool and the thread rolling wheel, ensuring that the equipment will not be damaged due to high temperature during operation. However, in the actual use process, due to the lack of retracting tool protection for the cutting tool, the cutting tool set therein starts to reverse directly after the forward cutting is completed, which is likely to cause tool breakage, easily damage the tool, and accelerate its damage speed. In view of this, the present application provides a thread rolling device for a thread rolling machine and a thread rolling machine. By setting a retracting tool assembly, the end cutting assembly can be separated from the steel bar to be processed after cutting, thereby realizing the retracting tool function, further avoiding the phenomenon of tool breakage, preventing tool damage, and prolonging the overall service life of the device. The specific structures of the thread rolling device and the thread rolling machine are described in detail below.

[0028] Refer to Figures 1-6, embodiments of the present application provide a thread rolling device for a thread rolling machine, including: a peeling assembly 4, a thread rolling assembly 3, a gearbox 2, a motor 1, an end face cutting assembly, and a tool retraction assembly.

[0029] Referring to Figures 1-2 , the peeling assembly 4, the thread rolling assembly 3, the gearbox 2, and the motor 1 are arranged in sequence from far to near with respect to the steel bar to be processed; the output end of the motor 1 is connected to the power input shaft 204 of the gearbox 2, and the low-speed output end of the gearbox 2 is connected to the thread rolling assembly 3; a hollow camshaft 203 is arranged in the gearbox 2, and the hollow camshaft 203 is sleeved on the power input shaft 204; the power input shaft 204 passes through the hollow camshaft 203 and is connected to the end face cutting assembly.

[0030] Referring to Figures 2-5 , the tool retraction assembly includes a tool retraction control ring 504, a top column 503, and a guide block 505; the top of the tool retraction control ring 504 is rotatably connected to the outer shell 201 of the gearbox 2, and the middle part of the tool retraction control ring 504 is connected to the end face cutting assembly; one end of the top column 503 is rotatably arranged on the motor 1. Among them, when the thread rolling device is in the state of processing the steel bar to be processed, the top column 503 is placed above the guide block 505 and can slide relative to the guide block 505, and the end of the top column 503 away from the motor 1 abuts against the bottom of the tool retraction control ring 504, so that the tool retraction control ring 504 inclines in the direction away from the motor 1; when the cutting of the steel bar to be processed is completed, the top column 503 disengages from the guide block 505 and rotates downward relative to the motor 1; the tool retraction control ring 504 rotates in the direction close to the motor 1 to drive the end face cutting assembly to move away from the steel bar to be processed.

[0031] In the embodiments of the present application, the so-called thread rolling device can be regarded as a variant supplement of the through-hole cooling double-speed power simultaneous output transmission device for a thread rolling machine disclosed in the Chinese invention patent with the publication number CN114404353B as described above. Among them, the peeling assembly 4, the thread rolling assembly 3, the gearbox 2, and the motor 1 correspond one by one to the peeling device, the thread rolling device, the gearbox 2, and the motor 1 in that patent. This embodiment is an innovation and supplement on the basis of it. Therefore, only the obvious changes are described in detail, and the similar parts are not elaborated again. Moreover, the cooling part in it is cancelled in this embodiment to avoid the possibility of the splashing coolant accelerating the corrosion speed of the internal parts of the equipment.

[0032] In this article, the direction close to the steel bar to be processed is regarded as the front.

[0033] In some embodiments of the present application, the tool retraction control ring 504 can be sleeved on the power input shaft 204.

[0034] In this embodiment, the retraction control ring 504 rotates in the direction close to the motor 1, which means that the retraction control ring 504 rotates with the connection point with the housing 201 of the gearbox 2 as the rotation center.

[0035] As described above, the output end of the motor 1 is connected to the power input shaft 204 of the gearbox 2. In this article, the output end of the motor 1 and the power input shaft 204 can be connected by a keyway and a key to ensure that the power input shaft 204 can rotate driven by the motor 1.

[0036] As described above, the power input shaft 204 passes through the hollow camshaft 203 and is connected to the end face cutting assembly. In the embodiment of this article, the end face cutting assembly can move back and forth relative to the power input shaft 204 and does not disconnect from the power input shaft 204 during the back-and-forth movement. Thus, the end face cutting assembly can rotate driven by the power input shaft 204 to complete the cutting of the end face of the steel bar to be processed.

[0037] As described above, the middle part of the retraction control ring 504 is connected to the end face cutting assembly. In some embodiments, the end face cutting assembly and the retraction control ring 504 can be connected by a rod (such as the connecting rod described below). The rod can be set to penetrate the power input shaft 204, with one end connected to the end face cutting assembly and the other end connected to the retraction control ring 504. The rod can also be located outside the power input shaft 204, with both ends respectively connected to the end face cutting assembly and the retraction control ring 504.

[0038] In the solution of this embodiment, the thread rolling device is in the state of processing the reinforcing bar to be processed, which means that the thread rolling device processes the reinforcing bar to be processed. When the thread rolling device processes the reinforcing bar to be processed, the ejector pin 503 is located above the guide block 505, the end surface contacts the guide block 505, and moves forward relative to the guide block 505. During this process, the reinforcing bar to be processed first enters the peeling assembly 4, and the peeling assembly 4 peels the outer surface of the reinforcing bar to be processed to facilitate subsequent thread rolling processing. Then, the thread rolling assembly 3 arranged behind the peeling assembly 4 performs thread rolling on the outer surface of the processed reinforcing bar after surface cutting. Next, the end face cutting assembly performs end face cutting on the end face cut of the processed reinforcing bar after thread rolling, so that the device can perform cutting processing on the cut end face of the reinforcing bar while completing the thread rolling processing of the reinforcing bar. This helps to improve the processing efficiency. When the cutting is completed, the ejector pin 503 disengages from the guide block 505. At this time, the space below the ejector pin 503 is empty. In this case, since only one end of the ejector pin 503 is connected to the motor, the other end of the ejector pin 503 will rotate downward relative to the motor 1. In this case, the end of the ejector pin 503 away from the motor 1 disengages from the contact with the bottom of the tool retraction control ring 504. Thus, the tool retraction control ring 504 can rotate in the direction close to the motor 1 to drive the end face cutting assembly to move away from the reinforcing bar to be processed, completing the tool retraction. After that, the peeling assembly 4, the thread rolling assembly 3, the gearbox 2, the motor 1, the end face cutting assembly and the tool retraction assembly (excluding the guide block 505) move away from the reinforcing bar to be processed. At this time, the ejector pin 503 contacts the guide block 505 and returns during the backward movement to abut against the bottom of the tool retraction control ring 504 again. In this case, the end face cutting assembly returns under the drive of the tool retraction control ring 504.

[0039] Through the above technical solution, by setting the tool retraction assembly, the tool retraction control ring 504 in the tool retraction assembly can be used to control the end face cutting assembly to move away from the reinforcing bar to be processed after cutting is completed, so as to realize the tool retraction function. Thus, the phenomenon of tool breakage can be avoided after cutting is completed, tool damage can be avoided, and the overall service life of the device can be prolonged.

[0040] Refer to Figure 3 , in some embodiments of the present application, a first fixed bracket 507 is connected to the motor 1, a rotating shaft 501 is arranged on the first fixed bracket 507, and the end of the ejector pin 503 is rotatably arranged on the motor 1 through the rotating shaft 501. In a specific embodiment, the first fixed bracket 507 can be connected to the flange ring of the motor 1. The device of this solution has a simple structure, and the ejector pin 503 can rotate relative to the motor 1 through the rotating shaft 501. Thus, it can be ensured that the ejector pin 503 can disengage from the contact with the bottom of the tool retraction control ring 504 when the cutting is completed, ensuring the realization of the tool retraction function.

[0041] Continue to refer toFigure 3 In some embodiments of the present application, the retraction assembly also includes a shift fork 502 and a limit block 506. There are two shift forks 502, which are respectively arranged on both sides of the top column 503 and fixedly connected to the rotating shaft 501 to rotate with the rotating shaft 501; the limit block 506 corresponds to the shift fork 502 one by one, and there is a gap between the limit block 506 and the guide block 505 in the front-to-back direction; wherein, when the cutting of the steel bar to be processed is completed, the shift fork 502 contacts the limit block 506.

[0042] In some embodiments, both the top column 503 and the limit block 506 can be set on the box body 8 of the thread rolling machine.

[0043] In this solution, when cutting is completed, the limit block 506 touches the corresponding fork 502, thereby driving the top column 503 to rotate downward and break away from the contact with the bottom of the retraction control ring 504. At this time, the top column 503 is located at the interval between the limit block 506 and the guide block 505 in the front-to-back direction.

[0044] By setting the shift fork 502 and the limit block 506, the above technical solution can utilize the contact between the limit block 506 and the shift fork 502 to drive the top column 503 out of contact with the bottom of the tool retraction control ring 504 when cutting is completed, which helps to further ensure the realization of the tool retraction function.

[0045] In some embodiments of the present application, a hollow slot 205 is provided at one end of the power input shaft 204 close to the motor 1. Figure 5 The retraction assembly also includes a sliding clutch adjustment column and an adjustment bearing 509, and the adjustment bearing 509 is sleeved on the outside of the hollow slot 205; a slide groove 206 is provided on the side wall of the hollow slot 205, and the sliding clutch adjustment column includes a column 508 and a sliding pin 510, and the column 508 is arranged inside the hollow slot 205, one end of the sliding pin 510 is connected to the column 508, and the other end passes through the slide groove 206 and is connected to the adjustment bearing 509; the end face cutting assembly is connected to the column 508; wherein, when the retraction control ring 504 rotates in a direction close to the motor 1, the adjustment bearing 509 and the sliding clutch adjustment column are driven to move in a direction away from the steel bar to be processed.

[0046] In such Figure 5 In the illustrated embodiment, the output end of the motor 1 is connected to the power input shaft 204 via a hollow slot 205 .

[0047] It can be understood that the middle part of the knife retraction control ring 504 can be connected to the adjustment bearing 509 through a bearing, so that it can rotate relative to the adjustment bearing 509. Those skilled in the art can understand the specific connection method, which will not be described in detail.

[0048] As described above, a chute 206 is provided on the side wall of the hollow slot 205. The number of chutes 206 can be set as required. For example, in the embodiment shown in Figure 6 , the number of chutes 206 is four. In some embodiments of the present application, the number of sliding pins 510 can correspond one-to-one with the number of chutes 206. Of course, the number of sliding pins 510 can also be different from the number of chutes 206. For example, in the embodiment shown in Figure 5 , the number of sliding pins 510 is two.

[0049] As described above, the end face cutting assembly is connected to the column 508. Specifically, a connecting rod can be provided between the end face cutting assembly and the column 508. One end of the connecting rod can be connected to the end face cutting assembly, and the other end can pass through the power input shaft 204 and extend into the hollow slot 205, and be connected to the column 508 located inside the hollow slot 205. Thus, when the tool retraction control ring 504 rotates in the direction close to the motor 1, it can drive the adjusting bearing 509 and the sliding clutch adjusting column to move away from the reinforcing bar to be processed. At this time, the sliding pin 510 slides in the corresponding chute 206, and the column 508 moves away from the reinforcing bar to be processed and drives the connected end face cutting assembly to move.

[0050] In the solution of this embodiment, the relative connection between the tool retraction control ring 504 and the end face cutting assembly is realized by the mutual connection between the sliding clutch adjusting column, the adjusting bearing 509, and the tool retraction control ring 504. The structure is simple and reliable, and the relative fixation between the tool retraction control ring 504 and the end face cutting assembly can be realized, ensuring that the end face cutting assembly moves away from the reinforcing bar to be processed under the drive of the tool retraction control ring 504, and ensuring the realization of the tool retraction function.

[0051] Referring to Figures 3-4 , in some embodiments of the present application, the end face cutting assembly includes a cutting tool rod 601, a cutting tool seat 602, and an end face cutting tool; one end of the cutting tool rod 601 away from the reinforcing bar to be processed is connected to the power input shaft 204 and the column 508, and the cutting tool rod 601 has the freedom to move back and forth relative to the power input shaft 204. One end of the cutting tool rod 601 close to the reinforcing bar to be processed is connected to the cutting tool seat 602, and the end face cutting tool is fixed on the cutting tool seat 602; the power input shaft 204 drives the cutting tool rod 601 to rotate, so that the end face cutting tool cuts the end of the reinforcing bar to be processed when it contacts the end of the reinforcing bar to be processed.

[0052] The inventor has found through research that in the related art, in order to avoid the tool breakage when the cutting tool directly starts to reverse after the forward cutting is completed as much as possible, a relatively low cutting speed (about 200 revolutions per minute) is generally used to cut the steel bar, and the material is mostly ordinary white steel blades. In the solution of this application, the thread rolling device has a tool retraction function, so a relatively high cutting speed can be used to cut the steel bar, which helps to improve the processing efficiency.

[0053] In some embodiments of this application, the material of the end face cutting tool can be a tungsten carbide blade. The cutting speed of the end face cutting tool can be 1440 revolutions per minute.

[0054] The overall structure of the end face cutting component of this solution is simple and the cost is low. And compared with CN114404353B, there is no need to set cooling parts such as liquid outlets and conduits therein, which can avoid the possibility of the splashing coolant accelerating the corrosion speed of the internal parts of the equipment.

[0055] As described above, one end of the cutting tool rod 601 far from the steel bar to be processed is connected to the power input shaft 204 and the column body 508, and the cutting tool rod 601 has the freedom to move back and forth relative to the power input shaft 204. In other words, one end of the cutting tool rod 601 far from the steel bar to be processed can be connected to the power input shaft 204 to rotate under the drive of the power input shaft 204. One end of the cutting tool rod 601 far from the steel bar to be processed can also be connected to the column body 508 at the same time. For example, the column body 508 and the cutting tool rod 601 can be connected through a connecting rod penetrating the power input shaft 204. Since the cutting tool rod 601 has the freedom to move back and forth relative to the power input shaft 204, the cutting tool rod 601 can move along with the movement of the column body 508.

[0056] In some embodiments, the cutting tool rod 601 can be connected to the power input shaft 204 by a plug-in method. This plug-in method includes but is not limited to inserting the end of the cutting tool rod 601 into the end of the power input shaft 204, or inserting the end of the power input shaft 204 into the end of the cutting tool rod 601.

[0057] In the above technical solution, the column body can drive the cutting tool rod away from the steel bar to be processed, and further make the end face cutting tool on the cutting tool seat away from the steel bar to be processed. The overall structure of this solution is simple and the function is reliable.

[0058] Combined with referring to Figure 4 、 6 In some embodiments of this application, a plug-in groove 604 is provided inside one end of the cutting tool rod 601 close to the power input shaft 204, and the power input shaft 204 is connected to the cutting tool rod 601 through the plug-in groove 604. This solution has a simple structure and can realize the reliable connection between the power input shaft 204 and the cutting tool rod 601.

[0059] In some embodiments of the present application, the shape of the insertion slot 604 is a polygon, and one end of the power input shaft 204 is formed with an insertion block adapted to the shape of the insertion slot 604. The insertion block is inserted into the insertion slot 604. The polygon shape includes but is not limited to a triangle, a square, a regular hexagon, a regular octagon, etc., and the present application does not limit this. By setting the shape of the insertion slot 604 to a polygon, the polygon structure can be used to further ensure that the cutting tool bar 601 rotates with the power input shaft 204, thereby ensuring the reliability of the device operation.

[0060] In some other embodiments of the present application, the shape of the insertion slot 604 can also be circular. The present application does not limit this.

[0061] Referring to Figure 4 、 6 In some embodiments of the present application, a connecting rod 603 is arranged in the insertion slot 604. The connecting rod 603 passes through the power input shaft 204 and is threadedly connected to the column body 508. In this case, the connection position between the column body 508 of the sliding clutch adjusting column and the connecting rod 603 can be adjusted to adjust the position of the cutting tool bar 601, and further the purpose of adjusting the length of the thread on the steel bar to be processed can be achieved.

[0062] In some embodiments of the present application, a second fixing bracket 202 is arranged inside the housing 201 of the gearbox 2. The top of the tool retraction control ring 504 is rotatably connected to the second fixing bracket 202. In this case, the connection point between the tool retraction control ring 504 and the second fixing bracket 202 is the connection point between the tool retraction control ring 504 and the housing 201 of the gearbox 2. This solution has a simple structure and reliable function.

[0063] Referring to Figure 7 An embodiment of the present application further provides a thread rolling machine, which includes a box body 8, a clamping mechanism 7 and the thread rolling device described in any of the above embodiments; the clamping mechanism 7 and the thread rolling device are both arranged on the box body 8. The clamping mechanism 7 in this solution can clamp and limit the steel bar to be processed to prevent it from shaking during the processing. Those skilled in the art can understand the specific structure of the clamping mechanism 7 and will not be elaborated.

[0064] Continuing to refer to Figure 7 In some embodiments of the present application, a plurality of rollers 9 are arranged at the bottom of the box body 8. By arranging the rollers 9 at the bottom of the box body 8, the whole thread rolling machine is easier to be transferred and carried, facilitating its access.

[0065] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front", "rear", "upper", "lower", "left", "right", "lateral", "vertical", "perpendicular", "horizontal", "top", "bottom", etc. are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation terms "inner" and "outer" refer to the inside and outside relative to the contour of each component itself.

[0066] For convenience of description, regional relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the regional positional relationships of one or more components or features shown in the drawings with other components or features. It should be understood that the regional relative terms not only include the orientations of the components described in the drawings, but also different orientations during use or operation. For example, if the components in the drawings are inverted as a whole, the components "above other components or features" or "over other components or features" will include the situation where the components are "below other components or structures" or "under other components or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". In addition, these components or features can also be positioned at other different angles (such as rotated 90 degrees or other angles), and this document is intended to cover all such situations.

[0067] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, components, parts and / or their combinations.

[0068] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0069] This application has been illustrated by the above embodiments. However, it should be understood that the above embodiments are only for the purpose of exemplification and illustration, and are not intended to limit this application to the scope of the described embodiments. In addition, those skilled in the art can understand that this application is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of this application, and these variations and modifications all fall within the scope of protection required by this application. The scope of protection of this application is defined by the appended claims and their equivalent scope.

Claims

1. A thread rolling device of a thread rolling machine, characterized in that: include: Stripping assemblies, thread rolling assemblies, gearboxes, motors, face cutting assemblies and retracting assemblies; The stripping assembly, the thread rolling assembly, the gearbox and the motor are arranged in sequence from far to near relative to the steel bar to be processed; the output end of the motor is connected to the power input shaft of the gearbox, and the low-speed output end of the gearbox is connected to the thread rolling assembly; a hollow camshaft is arranged in the gearbox, and the hollow camshaft is sleeved on the power input shaft; the power input shaft passes through the hollow camshaft and is connected to the end face cutting assembly; The tool retraction assembly includes a tool retraction control ring, a top column and a guide block; the top of the tool retraction control ring is rotatably connected to the housing of the gearbox, and the middle of the tool retraction control ring is connected to the end face cutting assembly; one end of the top column is rotatably arranged on the motor; Wherein, when the thread rolling device is in a state of processing the steel bar to be processed, the top column is placed above the guide block and can slide relative to the guide block, and the end of the top column away from the motor abuts against the bottom of the knife retraction control ring to make the knife retraction control ring tilt in a direction away from the motor; when the cutting of the steel bar to be processed is completed, the top column is separated from the guide block and rotated downward relative to the motor; the knife retraction control ring rotates in a direction close to the motor to drive the end face cutting assembly to move in a direction away from the steel bar to be processed.

2. The thread rolling device according to claim 1, characterized in that: The motor is connected to a first fixing bracket, the first fixing bracket is provided with a rotating shaft, and the end of the top column is rotatably arranged on the motor through the rotating shaft.

3. The thread rolling device according to claim 2, characterized in that: The retracting assembly also includes a shift fork and a limit block. There are two shift forks, which are respectively arranged on both sides of the top column and fixedly connected to the rotating shaft to rotate with the rotating shaft. The limit block corresponds to the shift fork one by one, and there is a gap between the limit block and the guide block in the front-to-back direction. When the cutting of the steel bar to be processed is completed, the shift fork contacts the limit block.

4. The thread rolling device according to claim 1, characterized in that: A hollow slot is provided at one end of the power input shaft close to the motor; The knife retracting assembly further comprises a sliding clutch adjusting column and an adjusting bearing, wherein the adjusting bearing is sleeved on the outside of the hollow slot; The side wall of the hollow slot is provided with a slide groove, the sliding clutch adjustment column comprises a column and a sliding pin, the column is arranged inside the hollow slot, one end of the sliding pin is connected to the column, and the other end passes through the slide groove and is connected to the adjustment bearing; the end face cutting assembly is connected to the column; Wherein, when the knife retraction control ring rotates in a direction close to the motor, the adjusting bearing and the sliding clutch adjusting column are driven to move in a direction away from the steel bar to be processed.

5. The thread rolling device according to claim 4, characterized in that: The end face cutting assembly includes a cutting rod, a cutting seat and an end face cutter; the end of the cutting rod away from the steel bar to be processed is connected to the power input shaft and the column, and the cutting rod has the freedom to move forward and backward relative to the power input shaft; the end of the cutting rod close to the steel bar to be processed is connected to the cutting seat, and the end face cutter is fixed on the cutting seat; the power input shaft drives the cutting rod to rotate, so that the end face cutter cuts the end of the steel bar to be processed when it contacts the end of the steel bar to be processed.

6. The thread rolling device according to claim 5, characterized in that: An inserting groove is provided inside one end of the cutting tool rod close to the power input shaft, and the power input shaft is connected to the cutting tool rod through the inserting groove.

7. The thread rolling device according to claim 6, characterized in that: The plug-in slot is in a polygonal shape, and a plug-in block matching the shape of the plug-in slot is formed at one end of the power input shaft, and the plug-in block is plugged into the plug-in slot.

8. The thread rolling device according to claim 6, characterized in that: A connecting rod is arranged in the plug-in slot, and the connecting rod passes through the power input shaft and is threadedly connected to the column.

9. The thread rolling device according to claim 1, characterized in that: A second fixed bracket is arranged in the outer shell of the gearbox, and the top of the knife retraction control ring is rotatably connected to the second fixed bracket.

10. A thread rolling machine, characterized in that: It comprises a box body, a clamping mechanism and the thread rolling device according to any one of claims 1 to 7; the clamping mechanism and the thread rolling device are both arranged on the box body.

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