Surface treatment mechanism for toothed stud

Abstract

This utility model relates to the technical field of threaded rod processing equipment, and provides a surface treatment processing mechanism for threaded rod studs, including: a base plate, two support plates symmetrically and vertically fixed to the top of the base plate, a lower thread rolling plate horizontally arranged between the two support plates, a lifting assembly movably connected to the two support plates, the two ends of the lower thread rolling plate being connected to the lifting assembly, and the height of the lower thread rolling plate being adjusted by the lifting assembly, and an upper thread rolling plate being arranged parallel above the lower thread rolling plate. This device can adjust the height of the lower thread rolling plate through the lifting assembly, thereby adjusting the distance between the upper and lower thread rolling plates, so that this device can process threaded rods of different diameters, thus improving the applicability of this device.

Description

Technical Field

[0001] This utility model belongs to the technical field of threaded rod processing equipment, and in particular relates to a surface treatment processing mechanism for threaded rod studs. Background Technology

[0002] Thread rolling refers to a machining method in which two rolling plates move relative to each other, rolling the blank between them into spiral grooves. In the entire fastener industry, thread rolling is mostly used in the production of wood screws. The thread rolling process replaces the original turning process, not only saving materials and reducing production costs, but also reducing labor costs. More importantly, it makes the threads sharper, greatly improving efficiency.

[0003] Utility model patent CN215544602U discloses a surface thread rolling mechanism for threaded rod studs. This mechanism includes a thread rolling support base, with limit working frames installed at both ends of the support base. A first telescopic housing is installed inside one set of limit working frames. A first connecting slide rod is installed at the left end of the first telescopic housing. A thread rolling working pressure block is installed at the end of the first connecting slide rod away from the first telescopic housing. A second connecting slide rod is installed at the end of the second connecting slide rod away from the first connecting slide rod. A first limit slider is installed at the end of the second connecting slide rod away from the thread rolling working pressure block. A first limit groove is formed inside another set of limit working frames. This surface thread rolling mechanism for threaded rod studs, through the second telescopic housing, the connecting telescopic slide rod, and the limit working frames, enables automatic pressure application, effectively improving the practicality of the thread rolling mechanism.

[0004] However, the above-mentioned device has the following technical problems in actual use:

[0005] First, the inability to adjust the distance between the two thread rolling plates means that the device can only process threaded rods of a specified diameter, thus limiting its application scenarios.

[0006] Second, the aforementioned device's limiting work frame can only apply downward pressure to the thread rolling working block from the center position. However, when the screw pressure bar is located near the ends of the two thread rolling plates for processing, the limiting work frame cannot stably apply pressure to the lead screw and toothed bar at this time. This may cause the upper thread rolling plate to tilt or misalign, and it cannot limit the position of the lead screw and toothed bar, affecting the accuracy of the lead screw and toothed bar after thread rolling. Utility Model Content

[0007] This utility model provides a surface treatment processing mechanism for threaded rod studs, aiming to solve the problems mentioned in the background art, such as the inability to adjust the distance between the two thread rolling plates. At the same time, the limiting working frame at the top of the device can only apply pressure to the thread rolling working pressure block from the center position. When the lead screw and threaded rod are located near the ends of the two thread rolling plates, they cannot be effectively pressured, which may cause the upper thread rolling plate to tilt and affect the thread rolling accuracy.

[0008] This utility model is implemented as follows: a surface treatment processing mechanism for threaded rod studs includes: a base plate, two support plates symmetrically and vertically fixed to the top of the base plate, a lower thread rolling plate horizontally arranged between the two support plates, a lifting assembly movably connected to the two support plates, the two ends of the lower thread rolling plate being connected to the lifting assembly, and the height of the lower thread rolling plate being adjusted by the lifting assembly; an upper thread rolling plate parallel to the lower thread rolling plate; and a reciprocating movement mechanism having a drive assembly mounted on one of the support plates. The device includes a drive assembly and a spring-loaded assembly movably mounted on the other side of the support plate. The drive assembly and the spring-loaded assembly are respectively fixed to both ends of the upper thread rolling plate. A top plate is also fixed between the top ends of the two support plates. A pressing mechanism is provided on the top plate, and the bottom end of the pressing mechanism abuts against the upper thread rolling plate. In this solution, the device can adjust the height of the lower thread rolling plate through the lifting assembly, thereby adjusting the distance between the upper and lower thread rolling plates. This allows the device to process threaded rods of different diameters, thus improving the applicability of the device.

[0009] In addition, in this device, the pressure plate is pushed down by the output end of the electric push rod, and the pressure plate is attached to the rotating roller. The rotating roller is set in the rotating groove. The pressure applied by the pressure plate to the rotating roller is transmitted to the connecting plate through the rotating roller. Then the connecting plate will drive the upper thread rolling plate to be stably pressed on the surface of the lead screw and toothed rack. Since the rotating roller is evenly set on the top of the connecting plate in this device, the pressure transmitted by the pressure plate can be evenly transmitted to all positions of the connecting plate, thereby ensuring that the lead screw and toothed rack in each position can be effectively pressed.

[0010] Preferably, the lifting assembly includes: a first groove and a second groove symmetrically formed on the sidewalls of the two adjacent support plates; a screw is rotatably connected in the first groove; a rotating shaft is rotatably connected to the sidewall of the support plate; one end of the rotating shaft extends into the first groove and a first bevel gear is fixedly connected to its end; a second bevel gear meshing with the first bevel gear is fixedly connected to the outer wall of the bottom end of the screw; a guide rod is fixedly installed in the second groove; a lifting plate is horizontally fixed between the two support plates; a lower thread rolling plate is fixedly connected to the lifting plate; and both ends of the lifting plate are slidably connected to the first groove and the second groove, respectively; one end of the lifting plate is screwed to the screw, and the other end is slidably engaged with the guide rod. In this configuration, when the rotating shaft is manually rotated, the screw is driven to rotate through the transmission of the first bevel gear and the second bevel gear. The screw controls the lifting plate to move longitudinally up and down in the first groove, while the other end of the lifting plate is slidably engaged with the guide rod, using the guide rod to ensure the stability between the other end of the lifting plate and the sliding of the second groove.

[0011] Preferably, a connecting plate is fixedly connected to the top wall of the upper thread rolling plate, and through holes are opened on the side walls of the two support plates corresponding to the connecting plate. Sliding rods are slidably connected within the through holes, and one end of each sliding rod is fixedly connected to the side wall of the connecting plate. The driving assembly includes: a first mounting plate fixedly connected to the outer side wall of one of the support plates; a drive motor fixedly connected to the bottom wall of the first mounting plate; an eccentric stop block fixedly installed on the output end of the drive motor; and a connecting bracket fixedly connected to the end of one of the sliding rods away from the connecting plate. The bracket is U-shaped and has a rotating rod rotatably connected inside. A rotating shaft is rotatably connected to the outside of the rotating rod, and the rotating shaft abuts against the eccentric block. In this design, when the output end of the drive motor rotates, it will drive the eccentric block to rotate horizontally. The outer wall of the eccentric block is attached to the outer wall of the rotating shaft. When the eccentric block rotates, it will drive the rotating shaft to rotate, and the rotating shaft will drive the connecting bracket to move horizontally. The connecting bracket will drive the sliding rod to move, so that the connecting plate (and the upper thread rolling plate) moves away from the drive assembly.

[0012] It should be explained that the connecting bracket in this device is U-shaped, with a vertical part fixedly installed on the end of the sliding rod. The top and bottom of the vertical part are both fixedly installed with horizontal parts. The two ends of the rotating rod are rotatably connected to the horizontal parts on both sides. The rotating shaft is located outside the rotating rod, and the height of the eccentric block is the same as the height of the rotating shaft.

[0013] Preferably, the springback assembly includes: a second mounting plate fixedly connected to the outer wall of the support plate on the other side; a mounting block fixedly connected to the end of the second mounting plate away from the support plate; the end of the other sliding rod passing through the mounting block; a limiting ring fixedly connected to the outer wall of the sliding rod between the support plate and the mounting block; and a spring sleeved on the outer wall of the sliding rod between the limiting ring and the mounting block. In this configuration, when the drive assembly controls the upper thread rolling plate to move away from the drive assembly, the sliding rod on the other side will drive the limiting ring to move closer to the mounting block, while simultaneously compressing the spring. When the eccentric block rotates its protrusion away from the rotation axis, the spring rebounds, causing the limiting ring and the upper thread rolling plate to reset, waiting for the next displacement.

[0014] Preferably, the pressing mechanism includes: at least one electric push rod fixedly installed on the top plate, and a pressure plate is provided below the top plate. The output end of the electric push rod is fixedly connected to the pressure plate. A rotating groove is provided on the top wall of the connecting plate. Multiple rotating rollers are rotatably connected in the rotating groove. Parts of the rotating rollers extend out of the rotating groove. The multiple rotating rollers are evenly distributed, and the pressure plate presses against the multiple rotating rollers. In this scheme, when the output end of the electric push rod extends, it pushes the pressure plate down. The bottom wall of the pressure plate contacts the outer wall of the rotating roller and transmits the downward pressure to the rotating roller. The rotating roller drives the connecting plate to press down synchronously, and the upper thread rolling plate applies pressure to the lead screw and toothed rack.

[0015] It should be explained that the depth of the rotating groove is less than the diameter of the rotating roller, so the rotating roller will partially extend out of the rotating groove to ensure that the pressure plate can be stably attached to the rotating roller.

[0016] Preferably, at least one abutting strip is fixedly installed at the bottom of the pressure plate, and annular grooves are formed on the outer walls of the plurality of rotating rollers corresponding to the abutting strips. Friction strips are provided on the outer peripheral walls of the annular grooves. In this scheme, when the pressure plate moves down, the abutting strips first insert into the corresponding annular grooves and come into contact with the friction strips on the outer peripheral walls of the annular grooves. Then the pressure plate comes into contact with the outer walls of the rotating rollers. When the connecting plate moves horizontally, the contact between the abutting strips and the friction strips will drive the rotating rollers to rotate, thereby reducing the resistance caused by excessive friction between the pressure plate and the rotating rollers.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a surface treatment processing mechanism for threaded rod studs.

[0018] 1. This device can adjust the height of the lower thread rolling plate through the lifting component, thereby adjusting the distance between the upper and lower thread rolling plates, so that the device can process threaded rods of different diameters, thus improving the applicability of the device.

[0019] 2. In addition, in this device, the pressure plate is pushed down by the output end of the electric push rod. The pressure plate is attached to the rotating roller, and the rotating roller is set in the rotating groove. The pressure applied by the pressure plate to the rotating roller is transmitted to the connecting plate through the rotating roller. Then the connecting plate will drive the upper thread rolling plate to be stably pressed on the surface of the lead screw and toothed rack. Since the rotating roller is evenly set on the top of the connecting plate in this device, the pressure transmitted by the pressure plate can be evenly transmitted to all positions of the connecting plate, thereby ensuring that the lead screw and toothed rack in each position can be effectively pressed. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the present invention;

[0021] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This utility model Figure 1 Enlarged view of point B in the middle;

[0023] Figure 4 This utility model Figure 1 Enlarged view of point C in the middle;

[0024] Figure 5 This is a top view of the connecting plate in this utility model;

[0025] In the picture:

[0026] 1. Base plate; 11. Support plate; 12. Lower thread rolling plate; 13. Upper thread rolling plate; 131. Connecting plate; 132. Through hole; 133. Sliding rod; 14. Top plate;

[0027] 2. Lifting assembly; 21. First slide rail; 22. Second slide rail; 23. Screw; 24. Rotating shaft; 25. First bevel gear; 26. Second bevel gear; 27. Guide rod; 28. Lifting plate;

[0028] 3. Reciprocating moving mechanism; 31. Drive assembly; 311. First mounting plate; 312. Drive motor; 313. Eccentric stop block; 314. Connecting bracket; 315. Rotating rod; 316. Rotating shaft; 32. Springback assembly; 321. Second mounting plate; 322. Mounting block; 323. Limiting ring; 324. Spring;

[0029] 4. Pressing mechanism; 41. Electric push rod; 42. Pressure plate; 421. Anchoring bar; 43. Rotating groove; 44. Rotating roller; 441. Annular groove; 442. Friction bar. Detailed Implementation

[0030] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0031] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Please see Figure 1-5This utility model provides a technical solution: a surface treatment processing mechanism for threaded rod studs, comprising: a base plate 1, two support plates 11 vertically and fixedly connected to the top of the base plate 1, a lower thread rolling plate 12 horizontally arranged between the two support plates 11, a lifting assembly 2 movably connected to the two support plates 11, the two ends of the lower thread rolling plate 12 being connected to the lifting assembly 2, and the height of the lower thread rolling plate 12 being adjusted by the lifting assembly 2, an upper thread rolling plate 13 parallel to the lower thread rolling plate 12, a reciprocating movement mechanism 3, which has a drive assembly 31 disposed on one support plate 11 and a spring assembly 32 movably mounted on the other support plate 11, the drive assembly 31 and the spring assembly 32 being fixedly connected to the two ends of the upper thread rolling plate 13, a top plate 14 fixedly connected between the top ends of the two support plates 11, a pressing mechanism 4 disposed on the top plate 14, and the bottom end of the pressing mechanism 4 abutting against the upper thread rolling plate 13.

[0036] Furthermore, the lifting assembly 2 includes: a first groove 21 and a second groove 22 symmetrically formed on the sidewalls of two adjacent support plates 11; a screw 23 rotatably connected in the first groove 21; a rotating shaft 24 rotatably connected to the sidewall of the support plate 11; one end of the rotating shaft 24 extending into the first groove 21 and a first bevel gear 25 fixedly connected to its end; a second bevel gear 26 meshing with the first bevel gear 25 fixedly connected to the outer wall of the bottom end of the screw 23; a guide rod 27 fixedly installed in the second groove 22; a lifting plate 28 horizontally fixed between the two support plates 11; a lower thread rolling plate 12 fixedly connected to the lifting plate 28; and both ends of the lifting plate 28 slidably connected in the first groove 21 and the second groove 22, respectively; one end of the lifting plate 28 is screwed to the screw 23, and the other end is slidably engaged with the guide rod 27.

[0037] Specifically, in this device, a handle can be fixedly installed on the end of the rotating shaft 24 away from the first slide groove 21. The handle makes it convenient for manual gripping and thus drives the screw 23 to rotate. In addition, a motor can also be installed. The motor is fixedly installed on the outer wall of the support plate 11. The output end of the motor is fixedly connected to the end of the rotating shaft 24. The rotation of the motor output end replaces manual labor, thereby reducing the amount of manual work.

[0038] Furthermore, a connecting plate 131 is fixedly connected to the top wall of the upper thread rolling plate 13, and through holes 132 are opened on the side walls of the two side support plates 11 corresponding to the connecting plate 131. Sliding rods 133 are slidably connected in the through holes 132. One end of each sliding rod 133 is fixedly connected to the side wall of the connecting plate 131. The drive assembly 31 includes: a first mounting plate 311 fixedly connected to the outer side wall of one side support plate 11, a drive motor 312 fixedly connected to the bottom wall of the first mounting plate 311, an eccentric abutment 313 fixedly installed on the output end of the drive motor 312, and a connecting bracket 314 fixedly connected to the end of one side sliding rod 133 away from the connecting plate 131. The connecting bracket 314 is U-shaped and a rotating rod 315 is rotatably connected inside it. A rotating shaft 316 is rotatably connected to the outside of the rotating rod 315, and the rotating shaft 316 abuts against the eccentric abutment 313.

[0039] Specifically, the eccentric abutment 313 in this device can also be replaced by an eccentric block, and the same rotating shaft 316 can be replaced by a ball or roller that is compatible with the eccentric wheel.

[0040] Furthermore, the rebound assembly 32 includes: a second mounting plate 321 fixedly connected to the outer wall of the other side support plate 11; a mounting block 322 fixedly connected to the end of the second mounting plate 321 away from the support plate 11; the end of another sliding rod 133 passing through the mounting block 322; a limiting ring 323 fixedly connected to the outer wall of the sliding rod 133 between the support plate 11 and the mounting block 322; and a spring 324 sleeved on the outer wall of the sliding rod 133 between the limiting ring 323 and the mounting block 322.

[0041] Specifically, in order to ensure the stability of the first mounting plate 311 and the second mounting plate 321 on the outer wall of the support plate 11, reinforcing ribs are provided at the bottom of both the first mounting plate 311 and the second mounting plate 321. One end of the reinforcing rib is connected to the bottom of the first mounting plate 311 (second mounting plate 321), and the other end is fixed to the outer wall of the support plate 11. The reinforcing ribs are inclined and can provide support for the first mounting plate 311 and the second mounting plate 321.

[0042] Furthermore, the pressing mechanism 4 includes: at least one electric push rod 41 fixedly installed on the top plate 14, and a pressure plate 42 is provided below the top plate 14. The output end of the electric push rod 41 is fixedly connected to the pressure plate 42. A rotating groove 43 is provided on the top wall of the connecting plate 131. Multiple rotating rollers 44 are rotatably connected in the rotating groove 43. Parts of the rotating rollers 44 extend out of the rotating groove 43. The multiple rotating rollers 44 are evenly distributed, and the pressure plate 42 presses against the multiple rotating rollers 44.

[0043] Furthermore, at least one abutting strip 421 is fixedly installed at the bottom of the pressure plate 42, and an annular groove 441 is opened on the outer wall of the plurality of rotating rollers 44 corresponding to the abutting strip 421, and a friction strip 442 is provided on the outer peripheral wall of the annular groove 441.

[0044] Specifically, such as Figure 5 As shown, multiple abutment strips 421 can be provided and are distributed at equal intervals at the bottom of the pressure plate 42. The purpose of providing multiple abutment strips 421 is to ensure that the pressure of the pressure plate 42 pressing down can be stably transmitted to the connecting plate 131.

[0045] The working principle and usage process of this utility model: After this utility model is installed,

[0046] The lead screw rack to be processed is placed between the upper thread rolling plate 13 and the lower thread rolling plate 12. Then, the rotation of the rotating shaft 24 controls the rotation of the first bevel gear 25. The first bevel gear 25 transmits rotational kinetic energy to the screw 23 through the meshing second bevel gear 26, thereby driving the screw 23 to rotate. The screw 23 controls the lifting plate 28 to rise and fall longitudinally under the guidance of the guide rod 27 and the second slide groove 22, thereby adjusting the distance between the upper thread rolling plate 13 and the lower thread rolling plate 12 to ensure that the upper thread rolling plate 13 and the lower thread rolling plate 12 clamp the lead screw rack.

[0047] Subsequently, the alternating motion of the drive assembly 31 and the springback assembly 32 will drive the upper thread rolling plate 13 to reciprocate laterally, and cooperate with the lower thread rolling plate 12 to perform thread rolling on the lead screw and toothed rack. During the processing, the output end of the electric push rod 41 pushes the pressure plate 42 to adhere to the connecting plate 131 (rotating roller 44), and the connecting plate 131 applies pressure to the upper thread rolling plate 13 to make it stably contact the lead screw and toothed rack.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A surface treatment processing mechanism for a threaded rod stud, characterized in that: include: The bottom plate (1) has two support plates (11) that are symmetrically and vertically fixed to its top, and a lower thread rolling plate (12) is horizontally arranged between the support plates (11) on both sides. Lifting components (2) are movably connected to the support plates (11) on both sides. The two ends of the lower thread rolling plate (12) are connected to the lifting components (2), and the height of the lower thread rolling plate (12) is adjusted by the lifting components (2). An upper thread rolling plate (13) is also provided parallel to the lower thread rolling plate (12). The reciprocating moving mechanism (3) has a drive assembly (31) disposed on one side of the support plate (11) and a spring assembly (32) movably mounted on the other side of the support plate (11). The drive assembly (31) and the spring assembly (32) are respectively fixed to both ends of the upper thread rolling plate (13). A top plate (14) is fixed between the top ends of the two support plates (11), and a pressing mechanism (4) is provided on the top plate (14). The bottom end of the pressing mechanism (4) abuts against the upper thread rolling plate (13).

2. The surface treatment processing mechanism for a threaded stud as described in claim 1, characterized in that: The lifting assembly (2) includes: The two support plates (11) are symmetrically provided with a first slide groove (21) and a second slide groove (22) on their adjacent side walls. A screw (23) is rotatably connected in the first slide groove (21). A rotating shaft (24) is rotatably connected to the side wall of the support plate (11). One end of the rotating shaft (24) extends into the first slide groove (21) and a first bevel gear (25) is fixedly connected to its end. A second bevel gear (26) that meshes with the first bevel gear (25) is fixedly connected to the bottom outer wall of the screw (23). A guide rod (27) is fixedly installed in the second slide groove (22). A lifting plate (28) is horizontally fixed between the two support plates (11). The lower thread rolling plate (12) is fixedly connected on the lifting plate (28). The two ends of the lifting plate (28) are slidably connected in the first slide groove (21) and the second slide groove (22), respectively. One end of the lifting plate (28) is screwed to the screw rod (23), and the other end is slidably engaged with the guide rod (27).

3. The surface treatment processing mechanism for a threaded stud as described in claim 1, characterized in that: A connecting plate (131) is fixedly connected to the top wall of the upper thread rolling plate (13), and through holes (132) are opened on the side walls of the supporting plates (11) on both sides corresponding to the side walls of the connecting plate (131). Sliding rods (133) are slidably connected in the through holes (132), and one end of each of the two sliding rods (133) is fixedly connected to the side wall of the connecting plate (131). The driving component (31) includes: A first mounting plate (311) is fixedly connected to the outer wall of the support plate (11) on one side, and a drive motor (312) is fixedly connected to the bottom wall of the first mounting plate (311). An eccentric stop block (313) is fixedly installed on the output end of the drive motor (312). A connecting bracket (314) is fixed to the end of the sliding rod (133) away from the connecting plate (131). The connecting bracket (314) is U-shaped and has a rotating rod (315) rotatably connected inside. A rotating shaft (316) is rotatably connected to the outside of the rotating rod (315). The rotating shaft (316) abuts against the eccentric block (313).

4. The surface treatment processing mechanism for a threaded stud as described in claim 3, characterized in that: The springback assembly (32) includes: A second mounting plate (321) is fixed to the outer wall of the support plate (11) on the other side. A mounting block (322) is fixed to the end of the second mounting plate (321) away from the support plate (11). The end of another sliding rod (133) passes through the mounting block (322). A limiting ring (323) is fixedly connected to the outer wall of the sliding rod (133) between the support plate (11) and the mounting block (322), and a spring (324) is sleeved on the outer wall of the sliding rod (133) between the limiting ring (323) and the mounting block (322).

5. The surface treatment processing mechanism for a threaded stud as described in claim 3, characterized in that: The pressing mechanism (4) includes: At least one electric push rod (41) is fixedly installed on the top plate (14), and a pressure plate (42) is provided below the top plate (14), with the output end of the electric push rod (41) and the pressure plate (42) being fixedly connected; A rotating groove (43) is provided on the top wall of the connecting plate (131). Multiple rotating rollers (44) are rotatably connected in the rotating groove (43). Part of the rotating rollers (44) extends out of the rotating groove (43). The multiple rotating rollers (44) are distributed at equal intervals, and the pressure plate (42) is pressed against the multiple rotating rollers (44).

6. The surface treatment processing mechanism for a threaded stud as described in claim 5, characterized in that: At least one abutting strip (421) is fixedly installed at the bottom of the pressure plate (42), and an annular groove (441) is opened on the outer wall of the plurality of rotating rollers (44) corresponding to the abutting strip (421), and a friction strip (442) is provided on the outer peripheral wall of the annular groove (441).

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