Die grinding equipment for steel pipe machining

Abstract

The invention belongs to the technical field of steel pipe machining, and particularly relates to mold grinding equipment for steel pipe machining, which comprises a grinding platform, a fixed bottom plate and a movable top plate are arranged at the upper end of the grinding platform, and the fixed bottom plate is fixedly connected to the upper end of the grinding platform; the fixed bottom plate and the movable top plate are used for clamping and fixing a steel pipe mold from the two ends. And the clamping mechanisms are arranged on the fixed bottom plate and the movable top plate, each clamping mechanism comprises two symmetrically-distributed limiting grooves formed in the fixed bottom plate and the movable top plate, clamping plates are arranged in the limiting grooves, and the two ends of each clamping plate are slidably connected to the inner walls of the limiting grooves in the corresponding positions. Through cooperation of the clamping mechanism and the abutting mechanism, stable clamping of steel pipe molds with different lengths and different outer diameter specifications is achieved. The abutting mechanism can adjust the distance between the movable top plate and the fixed bottom plate through a synchronously-driven lifting lead screw to adapt to molds of different lengths.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel pipe processing, and particularly relates to a die grinding device for steel pipe processing. BACKGROUND

[0002] In the steel pipe production and processing process, the precision of the steel pipe die directly determines the forming quality of the steel pipe, and the rotation surface of the die is a key part directly contacting the steel pipe, and the surface smoothness, arc precision and other parameters of the rotation surface have very high requirements. Therefore, accurate and efficient grinding of the rotation surface of the steel pipe die is an important link in the steel pipe production process.

[0003] The existing steel pipe die grinding device has many deficiencies in actual application: firstly, the clamping mechanism has poor adaptability, the traditional clamping device is a rigid clamping structure, cannot be flexibly adapted according to the outer diameter size and shape arc of the steel pipe die, and is prone to cause unstable clamping of the die, displacement and shaking in the grinding process, and thus affects the grinding precision, and even causes scratches on the surface of the die; secondly, the grinding mechanism has insufficient universality, the existing grinding roller is designed with a fixed arc, and can only adapt to steel pipe dies of a single specification diameter, and different diameters of the die need to replace corresponding grinding parts, which not only increases the equipment investment cost, but also prolongs the processing preparation time and reduces the production efficiency; thirdly, the grinding coverage is not comprehensive, the traditional equipment can only realize single-direction grinding in the circumferential direction or the axial direction, and it is difficult to simultaneously consider circumferential and axial grinding, and is prone to form a grinding blind area on the rotation surface of the die, which causes inconsistent surface roughness and affects the use effect and service life of the die; fourthly, the fitting precision is limited, the fitting degree of the grinding roller and the surface of the die in the grinding process depends on manual adjustment, and it is difficult to real-time self-adaptive adjustment according to the actual size of the die, and problems such as damage to the die due to too tight fitting or incomplete grinding due to too loose fitting are prone to occur.

[0004] These problems not only restrict the processing quality and production efficiency of the steel pipe die, but also increase the production cost and labor intensity, and cannot meet the demand for high-precision, high-efficiency and high-universality processing of the die in modern steel pipe production. Therefore, a die grinding device for steel pipe processing with self-adaptive clamping, precise fitting and comprehensive grinding functions is needed to solve the defects in the prior art. SUMMARY

[0005] The purpose of the present application is to solve the problems in the background art, and to provide a die grinding device for steel pipe processing, which realizes full-direction and dead-angle-free grinding of the rotation surface of the steel pipe die through the cooperation of the rotation surface grinding mechanism and the self-lifting mechanism.

[0006] To achieve the above purpose, the following technical scheme is adopted in the present application: A die grinding device for steel pipe processing, comprising: The grinding platform is provided with a fixed bottom plate and a movable top plate at the upper end of the grinding platform, the fixed bottom plate is fixedly connected to the upper end of the grinding platform, and the fixed bottom plate and the movable top plate are used for clamping and fixing the steel pipe mold from both ends. The clamping mechanism is arranged on the fixed bottom plate and the movable top plate, and comprises two symmetrically distributed limiting grooves arranged on the fixed bottom plate and the movable top plate, and a clamping plate arranged in the limiting groove. The clamping plate is made of a flexible elastic material, and when the clamping plate contacts the outer wall of the steel pipe mold, the clamping plate is bent and adhered to the outer wall of the steel pipe mold to clamp and fix the steel pipe mold.

[0007] Preferably, the grinding platform is provided with an abutting mechanism for driving the movable top plate to move relative to the fixed bottom plate, so that the two ends of the steel pipe mold are stably placed between the fixed bottom plate and the movable top plate.

[0008] Preferably, the lower end of the grinding platform is fixedly connected with two symmetrically distributed second motors, and the two second motors always work synchronously under the action of an external PLC controller, for driving the two lifting screws to rotate synchronously.

[0009] Preferably, the position between the fixed bottom plate and the movable top plate is provided with a rotary surface polishing mechanism for polishing the rotary surface of the steel pipe mold.

[0010] Preferably, the polishing roller is made of high-hardness elastic material, the slope of the middle concave position of the polishing roller becomes larger when the two ends are pressed, and the slope of the middle concave position of the polishing roller becomes smaller when the two ends are restored by the elastic potential energy.

[0011] Preferably, a self-adapting fitting mechanism is arranged between the C-shaped sliding block and the polishing roller, the self-adapting fitting mechanism comprises an electric telescopic rod fixedly connected to the C-shaped sliding block, a U-shaped mounting plate is fixedly connected to the output end of the electric telescopic rod, a second bidirectional screw rod is rotatably connected between the two side walls of the U-shaped mounting plate, the second bidirectional screw rod penetrates the polishing roller, and screw groove slots with opposite screw directions are formed in the two side rod bodies of the second bidirectional screw rod, an extrusion plate is threadedly connected to each of the two screw groove slots of the second bidirectional screw rod, and the two extrusion plates are respectively in contact with the two ends of the polishing roller, and a fourth motor for driving the second bidirectional screw rod to rotate is fixedly connected to one side outer wall of the U-shaped mounting plate.

[0012] Preferably, the fourth motor is electrically connected to the electric telescopic rod through an external PLC controller, the rotation degree of the second bidirectional screw rod driven by the fourth motor always corresponds to the extension degree of the electric telescopic rod, so that the movement process of the polishing roller always corresponds to the middle slope size, and the polishing work of the steel pipe mold with different diameters is fitted.

[0013] Preferably, limit rods are fixedly connected between the two side inner walls of the U-shaped mounting plate, and the two limit rods penetrate and are slidingly connected to the two extrusion plates and the polishing roller.

[0014] Preferably, a self-lifting mechanism driven by the rotating surface polishing mechanism is arranged at the position between the fixed bottom plate and the movable top plate, and is used for driving the polishing roller to synchronously lift during the polishing process of the rotating surface of the steel pipe mold, so that more comprehensive polishing of the rotating surface of the polishing roller is realized, the self-lifting mechanism comprises an L-shaped rod fixedly connected to the lower end of the C-shaped sliding block, a guide wheel is rotatably connected to the side end of the L-shaped rod, a spiral track made of elastic material is fixedly connected between the fixed bottom plate and the movable top plate, and the guide wheel and the spiral track are in rotational contact.

[0015] Compared with the prior art, the mold grinding device for steel pipe machining has the following advantages: Stable clamping and strong adaptability: The stable clamping of the steel pipe mold of different lengths and different outer diameter specifications is realized by the cooperation of the clamping mechanism and the abutting mechanism. The abutting mechanism can adjust the distance between the moving top plate and the fixed bottom plate through the synchronous driving lifting screw, and adapt to molds of different lengths. The clamping plate is made of flexible elastic material, which can automatically bend and fit the mold outer wall when sliding towards each other under the drive of the first bidirectional screw. Regardless of the change of the outer diameter size of the mold, it can realize uniform clamping at multiple points, avoid displacement or shaking of the mold during grinding, and ensure the grinding accuracy. At the same time, the elastic clamping method can avoid rigid damage to the surface of the mold.

[0016] High polishing versatility and high fitting accuracy: The combination design of the self-adaptive fitting mechanism and the high-hardness elastic polishing roller makes the device have strong versatility and precise fitting ability. The electric telescopic rod can drive the polishing roller to move closer or farther away from the mold, and the fourth motor controls the extrusion force of the extrusion plate on both ends of the polishing roller through the second bidirectional screw, thereby adjusting the slope of the recessed position in the polishing roller. The fourth motor and the electric telescopic rod are linked through the PLC controller to realize the precise matching of the polishing roller movement process and the slope adjustment, which can adapt to the arc surface requirements of steel pipe molds of different diameters without the need to replace the polishing parts, reducing the equipment cost and the mold changing time. In addition, the setting of the limiting rod ensures the stability of the sliding of the extrusion plate and the installation of the polishing roller, further improving the fitting accuracy.

[0017] Grinding is comprehensive and efficient: The rotary surface polishing mechanism and the self-lifting mechanism work together to realize full-range and dead-angle-free grinding of the rotary surface of the steel pipe mold. The third motor drives the transmission gear to rotate along the fixed gear ring, driving the C-shaped slider and the polishing roller to rotate around the mold. At the same time, when the C-shaped slider moves circumferentially, the guide wheel of the self-lifting mechanism rolls along the spiral track, driving the polishing roller to move reciprocally along the mold axis under the guidance of the spiral track. The synchronous grinding movement in the circumferential and axial directions completely eliminates the polishing blind area, making the roughness of the mold rotary surface uniform and consistent, and significantly improving the polishing quality. Compared with traditional single-direction polishing equipment, the grinding efficiency of the present application is greatly improved, and the processing cycle is shortened.

[0018] High degree of automation and convenient operation: The various mechanisms of the device are linked and controlled through the external PLC controller, from the clamping and adaptation of the mold, the fitting adjustment of the polishing roller to the full-range grinding, all without real-time human intervention, with high degree of automation. The operator only needs to set the relevant parameters according to the mold specifications, and the device can complete the entire grinding process, reducing the labor intensity and the influence of human operation errors on the processing quality, improving the safety and stability of the production process, and meeting the automation and efficiency requirements of modern industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is Figure 1 is an enlarged view of A in the middle; Figure 3 is a schematic diagram of the three-dimensional structure of another angle of the present application; Figure 4 is Figure 3 is an enlarged view of B in the middle; Figure 5 is a schematic diagram of the partial structure of the mounting ring in the present application; Figure 6 is a schematic diagram of the cross-sectional structure of the polishing roller in the present application.

[0020] in the figure: 1, grinding platform; 11, fixed bottom plate; 12, moving top plate; 2, clamping mechanism; 21, limiting groove; 22, clamping plate; 23, mounting block; 24, first bidirectional screw; 25, first motor; 3, abutting mechanism; 31, lifting screw; 32, lifting block; 33, second motor; 4, rotary surface polishing mechanism; 41, mounting ring; 42, C-shaped sliding block; 43, transmission gear; 44, fixed gear ring; 45, polishing roller; 5, self-adaptive fitting mechanism; 51, electric telescopic rod; 52, U-shaped mounting plate; 53, second bidirectional screw; 54, extrusion plate; 55, fourth motor; 56, limiting rod; 6, self-lifting mechanism; 61, L-shaped rod; 62, guide wheel; 63, spiral track. DETAILED DESCRIPTION

[0021] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0022] Example: refer to Figures 1 to 6 A die grinding equipment for steel pipe machining, comprising: a grinding platform 1, the upper end of the grinding platform 1 is provided with a fixed bottom plate 11 and a moving top plate 12, the fixed bottom plate 11 is fixedly connected to the upper end of the grinding platform 1, and the fixed bottom plate 11 and the moving top plate 12 are used for clamping and fixing the steel pipe die from both ends; The clamping mechanism 2 is arranged on the fixed base plate 11 and the movable top plate 12, and comprises two symmetrical limiting grooves 21 arranged on the fixed base plate 11 and the movable top plate 12. The clamping plate 22 is arranged in the limiting groove 21. The two ends of the clamping plate 22 are slidably connected to the inner wall of the corresponding position limiting groove 21. The fixed base plate 11 and the movable top plate 12 are fixedly connected with two symmetrical mounting blocks 23. The first bidirectional screw rod 24 is rotatably connected between the two mounting blocks 23. The screw grooves with opposite screw directions are arranged on the two sides of the first bidirectional screw rod 24. The screw grooves on the two sides are threadedly connected with the two clamping plates 22 on the fixed base plate 11 and the movable top plate 12 in the corresponding positions. The first motor 25 for corresponding position of the first bidirectional screw rod 24 is fixedly connected to one of the mounting blocks 23 on the fixed base plate 11 and the movable top plate 12. The clamping plate 22 is made of flexible and elastic material. When the clamping plate 22 contacts the outer wall of the steel pipe mold, the clamping plate 22 is bent and adheres to the outer wall of the steel pipe mold, so that the steel pipe mold is clamped and fixed.

[0023] The working process is as follows: the steel pipe mold is placed between the fixed base plate 11 and the movable top plate 12. The first motor 25 is started. The first motor 25 drives the first bidirectional screw rod 24 to rotate. Because the screw grooves on the two sides of the first bidirectional screw rod 24 have opposite screw directions and are threadedly connected with the two clamping plates 22, under the limiting action of the limiting groove 21 on the clamping plate 22, the two clamping plates 22 slide towards each other along the limiting groove 21 until they contact the outer wall of the steel pipe mold. Because the clamping plate 22 is made of flexible and elastic material, the clamping plate 22 is bent and adheres to the shape of the outer wall of the steel pipe mold, so that the steel pipe mold is stably clamped at both ends, providing a stable basis for subsequent polishing operation and avoiding displacement of the steel pipe mold during polishing to affect the polishing accuracy.

[0024] The abutting mechanism 3 is arranged on the grinding platform 1 and is used to drive the movable top plate 12 to move relative to the fixed base plate 11, so that the two ends of the steel pipe mold are stably placed between the fixed base plate 11 and the movable top plate 12. The abutting mechanism 3 comprises two symmetrical lifting screw rods 31 rotatably connected to the upper end of the grinding platform 1. The lifting blocks 32 threadedly connected with the corresponding position lifting screw rods 31 are fixedly connected to the two side walls of the movable top plate 12.

[0025] Specifically, the lower end of the grinding platform 1 is fixedly connected with two symmetrical second motors 33. The two second motors 33 always work synchronously under the action of the external PLC controller and are used to drive the two lifting screw rods 31 to rotate synchronously.

[0026] This part is an auxiliary process for clamping and fixing, which works with the clamping mechanism 2 to adapt and fix steel pipe molds of different lengths. The workflow is as follows: According to the length of the steel pipe mold, two second motors 33 are started by an external PLC controller. Since the second motors 33 work synchronously, they will drive two lifting screws 31 to rotate synchronously. The lifting screws 31 are threadedly engaged with the lifting blocks 32 on the moving top plate 12, thereby driving the moving top plate 12 to move along the axial direction of the lifting screws 31. The distance between the moving top plate 12 and the fixed base plate 11 is adjusted so that the distance matches the length of the steel pipe mold, ensuring that both ends of the steel pipe mold can accurately fit the fixed base plate 11 and the moving top plate 12. Then, the clamping mechanism 2 is used for clamping, so as to achieve stable fixing of steel pipe molds of different lengths and improve the versatility of the equipment.

[0027] A rotating surface grinding mechanism 4 is provided at the position between the fixed base plate 11 and the movable top plate 12 for grinding the rotating surface of the steel pipe mold. The rotating surface grinding mechanism 4 includes a mounting ring 41 disposed between the fixed base plate 11 and the movable top plate 12. A C-shaped slider 42 is rotatably connected to the inner wall of the mounting ring 41. A transmission gear 43 is rotatably connected to the upper end of the C-shaped slider 42. A fixed toothed ring 44 is fixedly connected to the upper end of the mounting ring 41. The transmission gear 43 and the fixed toothed ring 44 mesh with each other. A third motor for driving the transmission gear 43 to rotate is fixedly connected inside the C-shaped slider 42. A grinding roller 45 is provided on the side of the C-shaped slider 42 near the steel pipe mold. The grinding roller 45 is recessed inward in the middle.

[0028] Specifically, the grinding roller 45 is made of a high-hardness elastic material. When both ends are squeezed, the slope of the concave position in the middle of the grinding roller 45 increases, while when the ends are not squeezed, they recover under their own elastic potential energy, and the slope of the concave position in the middle of the grinding roller 45 decreases.

[0029] This section is the core mechanism for rotary surface grinding, enabling circumferential grinding of the rotating surface of the steel pipe mold. The workflow is as follows: The third motor is started, driving the transmission gear 43 to rotate. Since the transmission gear 43 meshes with the fixed toothed ring 44 on the mounting ring 41, and the C-shaped slider 42 is circumferentially connected to the inner wall of the mounting ring 41, the rotation of the transmission gear 43 causes it to move circumferentially along the fixed toothed ring 44, thereby driving the C-shaped slider 42 to rotate circumferentially along the inner wall of the mounting ring 41. The grinding roller 45 on the C-shaped slider 42 then rotates around the steel pipe mold, performing circumferential grinding on the rotating surface of the steel pipe mold. The inward concave design of the grinding roller 45 allows it to initially adapt to the arc-shaped rotating surface of the steel pipe mold. Simultaneously, because the grinding roller 45 is made of a high-hardness elastic material, it possesses a certain deformation capacity, allowing it to maintain close contact with the rotating surface of the steel pipe mold during grinding, improving the grinding effect. The high hardness ensures the wear resistance and grinding efficiency of the grinding roller 45.

[0030] The adaptive fitting mechanism 5 is arranged between the C-shaped sliding block 42 and the polishing roller 45, and the adaptive fitting mechanism 5 comprises an electric telescopic rod 51 fixedly connected to the C-shaped sliding block 42, a U-shaped mounting plate 52 fixedly connected to an output end of the electric telescopic rod 51, a second bidirectional screw rod 53 rotatably connected between two side walls of the U-shaped mounting plate 52, the second bidirectional screw rod 53 penetrating through the polishing roller 45, and screw grooves with opposite screw directions being formed on two side rods of the second bidirectional screw rod 53, and extrusion plates 54 threadedly connected at the two screw grooves of the second bidirectional screw rod 53, the two extrusion plates 54 being respectively in close contact with two ends of the polishing roller 45, and a fourth motor 55 fixedly connected to one side outer wall of the U-shaped mounting plate 52 and used for driving the second bidirectional screw rod 53 to rotate.

[0031] Specifically, the fourth motor 55 is electrically connected with the electric telescopic rod 51 through an external PLC controller, the rotating degree of the second bidirectional screw rod 53 driven by the fourth motor 55 is always corresponding to the extending degree of the electric telescopic rod 51, so that the moving process of the polishing roller 45 is always corresponding to the middle slope size, and the polishing work of the steel pipe mold with different diameters is fitted.

[0032] Specifically, limit rods 56 are fixedly connected between two inner walls of the U-shaped mounting plate 52, and the two limit rods 56 penetrate through and are slidingly connected to the two extrusion plates 54 and the polishing roller 45.

[0033] Specifically, a distance sensor can be arranged on one side wall of the two clamping plates 22 which are close to each other, and the distance sensor can be electrically connected with the electric telescopic rod 51 and the fourth motor 55 through an external PLC controller.

[0034] The adaptive fitting mechanism 5 can control the working mode of the motor through the distance sensor according to the thickness of the steel pipe mold, so as to adjust the working process of the hydraulic oil, and further adjust the camber angle of the polishing wheel to make it conform to the camber of the steel pipe mold. The working process is as follows: according to the diameter of the steel pipe mold, the external PLC controller controls the electric telescopic rod 51 to extend, drives the U-shaped mounting plate 52 and the polishing roller 45 to move towards the steel pipe mold, and the polishing roller 45 approaches the rotating surface of the steel pipe mold. At the same time, since the fourth motor 55 is electrically connected with the electric telescopic rod 51, the driving rotation degree of the second bidirectional screw rod 53 corresponds to the extension degree of the electric telescopic rod 51, and when the second bidirectional screw rod 53 rotates, the two sides of the extrusion plate 54 slide towards or reversely under the limiting action of the limiting rod 56, and the two ends of the polishing roller 45 are extruded or relaxed. When the diameter of the steel pipe mold is large, the electric telescopic rod 51 extends greatly, the fourth motor 55 drives the second bidirectional screw rod 53 to make the extrusion plate 54 extrude the two ends of the polishing roller 45 with increased force, and the slope of the concave position in the middle of the polishing roller 45 is increased to fit the camber of the large-diameter steel pipe mold; when the diameter of the steel pipe mold is small, the electric telescopic rod 51 extends less, the extrusion plate 54 extrudes the two ends of the polishing roller 45 with reduced force, and the polishing roller 45 restores under the action of its own elastic potential energy, the slope of the concave position in the middle of the polishing roller 45 is reduced, and the camber of the polishing roller 45 is fitted to the camber of the small-diameter steel pipe mold. The limiting rod 56 ensures the stability of the sliding of the extrusion plate 54 and the installation stability of the polishing roller 45, avoids deviation during adjustment, ensures the precise fitting of the camber of the polishing roller 45 and the camber of the steel pipe mold, and improves the polishing precision and adaptability.

[0035] A self-lifting mechanism 6 driven by the rotating surface polishing mechanism 4 is also arranged at the position between the fixed bottom plate 11 and the movable top plate 12, which is used to drive the polishing roller 45 to ascend and descend synchronously during the polishing process of the rotating surface of the steel pipe mold, so as to realize more comprehensive polishing of the rotating surface of the polishing roller 45. The self-lifting mechanism 6 comprises an L-shaped rod 61 fixedly connected to the lower end of the C-shaped sliding block 42, a guide wheel 62 rotatably connected to the side end of the L-shaped rod 61, a spiral track 63 made of elastic material fixedly connected between the fixed bottom plate 11 and the movable top plate 12, and the guide wheel 62 is in rotational contact with the spiral track 63.

[0036] The self-lifting mechanism 6 can drive the grinding wheel to move axially during the cutting process, and through the guide wheel and the spiral track, the reciprocating feeding of the grinding wheel is realized during the circumferential movement, and comprehensive grinding processing is realized. The working process is as follows: when the rotary surface grinding mechanism 4 works, the C-shaped slider 42 rotates along the installation ring 41 in the circumferential direction, driving the lower end L-shaped rod 61 and the guide wheel 62 to move synchronously. Since the guide wheel 62 is in rolling contact with the spiral track 63, and the spiral track 63 is a spiral structure, the guide wheel 62 will be guided by the spiral track 63 during rolling along the spiral track 63, driving the L-shaped rod 61 and the C-shaped slider 42 to move reciprocatingly along the axial direction of the steel pipe mold (i.e. the lifting direction). Further, the grinding roller 45 is simultaneously lifted along the axial direction of the steel pipe mold while rotating around the steel pipe mold in the circumferential direction, realizing comprehensive and dead-angle-free grinding of the rotary surface of the steel pipe mold, avoiding the occurrence of a grinding blind area, and improving the comprehensiveness and uniformity of the grinding. The spiral track is made of elastic material, which can slightly deform when the guide wheel 62 rolls, reducing the wear between the guide wheel and the track, while ensuring the stability of the guide, and ensuring the stability of the lifting movement of the grinding roller 45.

[0037] The function principle of the present application can be described by the following operation mode: 1. Adaptation adjustment: according to the length and diameter of the steel pipe mold to be ground, the second motor 33 is started by the external PLC controller to adjust the distance between the movable top plate 12 and the fixed bottom plate 11, so that it is adapted to the length of the steel pipe mold; then the steel pipe mold is placed between the two.

[0038] 2. Clamping and fixing: the first motor 25 is started to drive the first bidirectional screw rod 24 to rotate, driving the two clamping plates 22 to slide towards each other and bend to fit the outer wall of the steel pipe mold, realizing stable clamping.

[0039] 3. Grinding preparation: the grinding roller 45 is driven to approach the steel pipe mold by the PLC controller controlling the electric telescopic rod 51 to extend, and the fourth motor 55 is simultaneously started to adjust the middle recessed slope of the grinding roller 45, so that it accurately fits the arc surface of the steel pipe mold.

[0040] 4. Comprehensive grinding: the third motor is started to drive the C-shaped slider 42 to drive the grinding roller 45 to rotate around the steel pipe mold in the circumferential direction, and at the same time, the self-lifting mechanism 6 drives the grinding roller 45 to reciprocatingly lift along the axial direction of the steel pipe mold under the driving of the circumferential movement of the C-shaped slider 42, realizing comprehensive grinding.

[0041] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A die grinding device for steel pipe processing, characterized in that, The utility model relates to a grinding platform, which comprises a fixed bottom plate (11) and a movable top plate (12) arranged at the upper end of the grinding platform (1), the fixed bottom plate (11) is fixedly connected to the upper end of the grinding platform (1), and the fixed bottom plate (11) and the movable top plate (12) are used for clamping and fixing the steel pipe mold from both ends. The clamping mechanism (2) is arranged on the fixed bottom plate (11) and the movable top plate (12), the clamping mechanism (2) comprises two symmetrically distributed limiting grooves (21) formed on the fixed bottom plate (11) and the movable top plate (12), the limiting groove (21) is provided with a clamping plate (22), the two ends of the clamping plate (22) are slidably connected to the inner wall of the corresponding position limiting groove (21), the fixed bottom plate (11) and the movable top plate (12) are fixedly connected with two symmetrically distributed mounting blocks (23), the first bidirectional screw rod (24) is rotatably connected between the two mounting blocks (23), the screw grooves with opposite screw directions are formed on the two sides of the first bidirectional screw rod (24), the screw grooves on the two sides are in threaded connection with the two clamping plates (22) on the fixed bottom plate (11) and the movable top plate (12) at the corresponding positions, and the first motor (25) for the corresponding position first bidirectional screw rod (24) is fixedly connected to one of the mounting blocks (23) on the fixed bottom plate (11) and the movable top plate (12). The clamping plate (22) is made of a flexible elastic material, and when the clamping plate (22) contacts the outer wall of the steel pipe mold, the clamping plate (22) is bent and adhered to the outer wall of the steel pipe mold, so that the steel pipe mold is clamped and fixed. The grinding platform (1) is provided with an abutting mechanism (3) for driving the movable top plate (12) to move relative to the fixed bottom plate (11), so that the two ends of the steel pipe mold are stably arranged between the fixed bottom plate (11) and the movable top plate (12), the abutting mechanism (3) comprises two symmetrically distributed lifting screw rods (31) rotatably connected to the upper end of the grinding platform (1), and the lifting blocks (32) in threaded connection with the corresponding position lifting screw rods (31) are fixedly connected to the two side walls of the movable top plate (12).

2. The die grinding apparatus for steel pipe processing according to claim 1, characterized by, The lower end of the grinding platform (1) is fixedly connected with two symmetrically distributed second motors (33), and the two second motors (33) always work synchronously under the action of an external PLC controller, for driving the two lifting screw rods (31) to rotate synchronously.

3. The die grinding apparatus for steel pipe machining according to claim 2, characterized by ​ 4. The die grinding apparatus for steel pipe processing according to Claim 1, characterized by A rotating surface polishing mechanism (4) is arranged between the fixed bottom plate (11) and the moving top plate (12) and is used for polishing the rotating surface of the steel pipe mold, the rotating surface polishing mechanism (4) comprises a mounting ring (41) arranged between the fixed bottom plate (11) and the moving top plate (12), a C-shaped sliding block (42) is circumferentially rotatably connected to the inner wall of the mounting ring (41), a transmission gear (43) is rotatably connected to the upper end of the C-shaped sliding block (42), a fixed gear ring (44) is fixedly connected to the upper end of the mounting ring (41), the transmission gear (43) and the fixed gear ring (44) are in meshing connection, and a third motor for driving the transmission gear (43) to rotate is fixedly connected to the C-shaped sliding block (42), a polishing roller (45) is arranged on the side of the C-shaped sliding block (42) close to the steel pipe mold, and the polishing roller (45) is arranged with a recess in the middle.

5. The die grinding apparatus for steel pipe machining according to claim 4, characterized by The polishing roller (45) is made of high-hardness elastic material, when the two ends of the polishing roller (45) are extruded, the slope of the recessed position in the middle of the polishing roller (45) becomes larger, and when the two ends are not extruded, the slope of the recessed position in the middle of the polishing roller (45) becomes smaller due to the elastic potential energy.

6. The die grinding apparatus for steel pipe machining according to claim 4, characterized by An adaptive fitting mechanism (5) is arranged between the C-shaped sliding block (42) and the polishing roller (45), the adaptive fitting mechanism (5) comprises an electric telescopic rod (51) fixedly connected to the C-shaped sliding block (42), a U-shaped mounting plate (52) is fixedly connected to the output end of the electric telescopic rod (51), a second bidirectional screw rod (53) is rotatably connected between the two side walls of the U-shaped mounting plate (52), the second bidirectional screw rod (53) penetrates through the polishing roller (45), and opposite screw grooves are formed in the two side rods, and extrusion plates (54) are threadedly connected to the two screw grooves of the second bidirectional screw rod (53), the two extrusion plates (54) are in mutual fitting with the two ends of the polishing roller (45), respectively, and a fourth motor (55) for driving the second bidirectional screw rod (53) to rotate is fixedly connected to the side outer wall of the U-shaped mounting plate (52).

7. The die grinding apparatus for steel pipe machining according to claim 6, characterized by The fourth motor (55) is electrically connected to the electric telescopic rod (51) through an external PLC controller, the rotating degree of the second bidirectional screw rod (53) driven by the fourth motor (55) is always corresponding to the extending degree of the electric telescopic rod (51), so that the moving process of the polishing roller (45) is always corresponding to the middle slope, and the polishing work of the steel pipe mold with different diameters is fitted.

8. The die grinding apparatus for steel pipe machining according to claim 6, characterized by Limit rods (56) are fixedly connected between the two inner walls of the U-shaped mounting plate (52), and the two limit rods (56) penetrate through and are slidingly connected to the two extrusion plates (54) and the polishing roller (45).

9. The die grinding apparatus for steel pipe machining according to Claim 6, characterized by The position between the fixed bottom plate (11) and the moving top plate (12) is also provided with a self-lifting mechanism (6) driven by the rotation surface polishing mechanism (4), which is used for driving the polishing roller (45) to lift synchronously to realize more comprehensive polishing of the rotation surface of the polishing roller (45) during the polishing process of the polishing roller (45) on the rotation surface of the steel pipe mold. The self-lifting mechanism (6) comprises an L-shaped rod (61) fixedly connected to the lower end of the C-shaped sliding block (42), the side end of the L-shaped rod (61) is rotatably connected with a guide wheel (62), the fixed bottom plate (11) and the moving top plate (12) are fixedly connected with a spiral track (63) made of elastic material, and the guide wheel (62) and the spiral track (63) are in rotatable contact.

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