Adaptive pipe diameter stainless steel pipe high finish automatic polishing production line

Abstract

The present application relates to the technical field of polishing rotating surface of steel pipe, and discloses an automatic polishing production line for stainless steel pipe with high smoothness, which comprises two material placing racks, a machine body arranged at the middle position between the two material placing racks, two adjustable polishing devices arranged on the top of the machine body, a motor arranged on the top of the machine body, a polishing wheel arranged on the output shaft of the motor, a strip-shaped plate arranged at the bottom of a deflection frame and fixedly connected to the machine body, a deflection wheel arranged on the top of the deflection frame, a steel pipe arranged in the middle of a supporting roller and a plurality of deflection wheels, and a reciprocating unit arranged on one side of the deflection wheel and located at one end of one of the polishing wheels. The reciprocating unit is used for realizing automatic forward and reverse circulation polishing of the steel pipe. The reverse polishing can cover the recessed pipe wall and the area on both sides of the weld which are not polished in the forward polishing, so as to eliminate the polishing blind area. The cross texture is easy to form uniform mirror surface, the polishing uniformity of the whole length is ensured, the high smoothness standard is stably achieved, and the waste product rate is reduced.

Description

Technical Field

[0001] This invention relates to the field of rotating surface grinding technology for steel pipes, and more particularly to an automatic grinding production line for high-gloss stainless steel pipes with adaptive pipe diameter. Background Technology

[0002] Stainless steel pipes, with their excellent corrosion resistance and mechanical properties, are widely used in high-end fields such as medical equipment, semiconductor manufacturing, and food machinery. These applications have stringent requirements for the surface finish of the steel pipes and the consistency of grinding along their entire length. Currently, mainstream stainless steel pipe grinding equipment in the industry generally adopts a unidirectional, one-pass grinding mode. Its core structure typically includes a grinding wheel of fixed specifications, a unidirectional conveyor roller, and a simple clamping mechanism. During operation, the steel pipe is fed in only one direction, and the processing is completed after a single pass of the grinding wheel.

[0003] Existing unidirectional single-pass grinding technology has several significant limitations: First, grinding uniformity is poor, easily resulting in grinding blind spots. During the unidirectional feeding process, the grinding wheel can only effectively act on the "facing side" of the pipe wall. Hidden areas formed by structural characteristics (such as micro-dimples and areas on both sides of welds) are often difficult to cover, leading to missed grinding. Simultaneously, unidirectional grinding creates a single texture along the feeding direction on the pipe surface, which is difficult to completely eliminate in subsequent polishing processes, making it difficult to achieve the mirror-like finish required for high-end applications. Second, pipe diameter adaptability is poor. The grinding wheel spacing and conveyor roller width of existing equipment are mostly fixed designs, making it difficult to flexibly adapt to different pipe specifications. When processing pipes of different diameters, it is necessary to disassemble and adjust the clamping or conveying components, resulting in a cumbersome changeover process and insufficient flexible production capacity. Third, centering error is a prominent issue. During the unidirectional conveying process, steel pipes are prone to axial centering deviation due to factors such as wear of conveying rollers and equipment vibration. This results in uneven contact pressure between the front and rear sections of the steel pipe and the grinding wheel, leading to local over-grinding or insufficient grinding, which affects the overall processing quality. Summary of the Invention

[0004] Given the problems of poor grinding uniformity and poor pipe diameter adaptability in the existing technology during unidirectional single grinding process, an automatic grinding production line for high-gloss stainless steel pipes with adaptive pipe diameter is proposed.

[0005] Its purpose is to provide a device that can adapt to pipe diameter, automatically eliminate grinding blind spots, and achieve precise grinding, so as to meet the quality requirements of grinding high-gloss stainless steel pipes.

[0006] The technical scheme of the application is an automatic polishing production line for self-adaptive pipe diameter stainless steel pipe high finish, which comprises two material placing racks, a machine body arranged at the middle position between the two material placing racks, two adjustable polishing devices arranged at the top of the machine body, the polishing device comprising a motor arranged at the top of the machine body, a polishing wheel arranged at one end of the output shaft of the motor, a supporting roller arranged at the middle of the two polishing wheels, a plurality of linear array deflection frames arranged at one side of the supporting roller, a strip-shaped plate arranged at the bottom of the deflection frame and fixedly connected to the machine body, a deflection wheel arranged at the top of the deflection frame, and a steel pipe arranged at the middle of the supporting roller and the plurality of deflection wheels, further comprising a reciprocating unit arranged at one side of the deflection wheel and at one end of one of the polishing wheels.

[0007] The reciprocating unit comprises a trigger assembly arranged at one side of the polishing wheel, a pushing assembly arranged at one side of the trigger assembly, a reversing assembly arranged at the bottom of the pushing assembly, and a reversing auxiliary assembly arranged in the deflection frame for assisting the reversing of the deflection wheel.

[0008] The trigger assembly comprises a support frame arranged at the top of the machine body, a one-way piece arranged at one side of the top of the support frame, the one-way piece being composed of a column, a ratchet groove arranged at one side of the column, and a plurality of recesses arranged in an annular array at the other side of the column, a trigger plate arranged on the rotating shaft of the support frame, a ratchet block arranged at one side of the trigger plate and located at the top of the ratchet groove and rotatable, and torsional springs arranged between the ratchet block and the rotating shaft of the trigger plate and between the trigger plate and the rotating shaft of the support frame.

[0009] The pushing assembly is used for pushing the reversing assembly to reverse after polishing the steel pipe once, and comprises a rotating groove arranged at the side of the recess, a clamping groove arranged at the top of the junction of the two recesses, a positioning ball arranged in the clamping groove, and a pushing rod arranged at one side of the positioning ball.

[0010] The reversing assembly is used for pushing the plurality of deflection frames and deflection wheels to reverse, and comprises a reversing rod group arranged at one side of the pushing rod, and a reversing plate arranged at the top of one end of the deflection frame.

[0011] Further, the pushing assembly further comprises a limiting groove equidistantly arranged along the surface of the continuous recess, the limiting groove being arranged in the rotating groove, a connecting rod arranged at one side of the positioning ball, and a limiting ball arranged at one side of the connecting rod and slidingly connected in the limiting groove.

[0012] Further, the reversing rod group is composed of two reversing rods and a fixed plate fixedly connected to the two ends of the reversing rods, the reversing assembly further comprises a plurality of groups of two reversing blocks arranged on the reversing rods close to one side of the deflection wheel, a movable hole arranged at one side of the top of the reversing plate, the reversing rod close to one side of the deflection wheel passing through the movable hole, and the two reversing blocks being arranged at the two sides of the reversing plate respectively, and a positioning assembly further arranged between the strip-shaped plate and the deflection frame.

[0013] Further, the positioning assembly comprises a fixed cylinder arranged at the bottom of one side of the deflection frame, a positioning spring arranged in the fixed cylinder, a positioning block arranged at the bottom of the positioning spring, and the top of the positioning block is slidably connected in the fixed cylinder, a positioning groove is arranged at the top of the strip-shaped plate, and the middle part of the positioning groove is protruding.

[0014] Further, when the positioning assembly is in the positioning state, the positioning block is located in one end of the positioning groove.

[0015] Further, the reversing auxiliary assembly comprises a rotating block arranged at the bottom of the side of the deflection frame away from the fixed cylinder, a sliding block arranged at the bottom of the rotating block, an auxiliary spring arranged at one side of the sliding block, and the auxiliary spring is arranged in a cavity arranged in the strip-shaped plate.

[0016] Further, the trigger plate is in an arc shape, and the ends of the trigger plate are uniformly provided with rolling balls, and the two sides of the ends of the trigger plate are provided with extrusion inclined surfaces.

[0017] Further, the middle part of the push rod is further provided with a limiting frame, the middle part of the push rod is limitingly and slidably connected with the limiting frame, and the limiting frame is fixedly connected with the supporting frame and the strip-shaped plate.

[0018] Further, the two ends of the strip-shaped plate are provided with bolts, and the top of the machine body is provided with a moving groove for the movement and fixation of the bolts.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. The production line is provided with an adjustable polishing device, a strip-shaped plate moving groove adjusting structure, and a self-adaptive clamping design of the deflection frame, so that different diameter stainless steel pipes can be adapted without replacing clamps. The production adjustment time is greatly reduced, the limitation of traditional equipment "single specification adaptation" is broken through, the production demand of multiple varieties is met, and the universality and flexibility of the equipment are improved.

[0021] 2. The forward and reverse automatic circulation polishing of the steel pipe is realized by relying on the reciprocating unit. The reverse polishing can cover the pipe wall depression and the area on both sides of the weld which is not polished in the forward direction, so as to eliminate the polishing blind area. The cross texture is easy to form a uniform mirror surface, and the secondary centering can also offset the deviation of the forward centering, so as to ensure the uniform polishing of the whole length, stably achieve the high smoothness standard, and reduce the waste rate.

[0022] 3. The whole process relies on mechanical structure automation, without manual intervention, so as to reduce the labor cost and operation error; the locking angle of the positioning assembly and the buffer reversing impact of the auxiliary spring can avoid the rigid wear of the parts, prolong the service life of the equipment, reduce the frequency of fault shutdown, and balance the production efficiency and equipment reliability. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole three-dimensional structure schematic view of the production line of the present application;

[0024] Figure 2 Fig. 1 is a schematic diagram of the overall structure of the body and polishing device of the present application;

[0025] Figure 3 Fig. 2 is a schematic diagram of the overall structure of the polishing device and reciprocating unit of the present application;

[0026] Figure 4 Fig. 3 is a schematic diagram of the overall structure of the reciprocating unit of the present application;

[0027] Figure 5 Fig. 4 is a schematic diagram of another angle of the overall structure of the reciprocating unit of the present application;

[0028] Figure 6 Fig. 5 is a schematic diagram of the exploded structure of the trigger assembly of the present application;

[0029] Figure 7 Fig. 6 is a schematic diagram of the exploded structure of the trigger assembly and reversing assembly of the present application;

[0030] Figure 8 Fig. 7 is a schematic diagram of the perspective structure of the pushing assembly and reversing assembly of the present application;

[0031] Figure 9 Fig. 8 is a schematic diagram of the exploded structure of the biasing frame and strip plate of the present application;

[0032] Figure 10 Fig. 9 is a schematic diagram of the exploded structure of the positioning assembly of the present application;

[0033] Figure 11 Fig. 10 is a schematic diagram of the overall exploded structure of the reversing auxiliary assembly of the present application.

[0034] In the drawings:

[0035] 1, material placing frame; 11, body; 12, polishing device; 13, supporting roller; 14, biasing frame; 15, strip plate; 16, biasing wheel; 2, trigger assembly; 21, supporting frame; 22, one-way piece; 221, ratchet groove; 222, recess; 23, trigger plate; 24, ratchet block; 3, pushing assembly; 31, rotating groove; 32, clamping groove; 33, positioning ball; 34, pushing rod; 35, limiting ball; 4, reversing assembly; 41, reversing plate; 42, reversing rod; 43, reversing block; 44, movable hole; 5, positioning assembly; 51, fixed cylinder; 52, positioning spring; 53, positioning block; 54, positioning groove; 6, reversing auxiliary assembly; 61, rotating block; 62, sliding block; 63, auxiliary spring; 7, ball bearing; 8, extrusion inclined surface; 9, limiting frame. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0037] Embodiment 1

[0038] With reference to Figures 1-11 For the first embodiment of the application, an adaptive pipe diameter stainless steel pipe high finish automatic polishing production line is provided, which comprises two material placing racks 1, a machine body 11 arranged at the middle position between the two material placing racks 1, two adjustable polishing devices 12 arranged at the top of the machine body 11, the polishing device 12 comprising a motor fixed at the top of the machine body 11, a polishing wheel fixedly connected to the output shaft of the motor, a supporting roller 13 installed in the middle of the two polishing wheels, a plurality of linear array deflection frames 14 arranged on one side of the supporting roller 13, a strip plate 15 installed at the bottom of the deflection frame 14 and arranged on the machine body 11, a deflection wheel 16 rotatably connected to the top of the deflection frame 14, and a steel pipe arranged in the middle of the supporting roller 13 and the plurality of deflection wheels 16, and further comprising a reciprocating unit arranged on one side of the deflection wheel 16 and located at one end of one of the polishing wheels; the reciprocating unit comprises a trigger assembly 2 arranged on one side of the polishing wheel, a pushing assembly 3 arranged on one side of the trigger assembly 2, a reversing assembly 4 arranged at the bottom of the pushing assembly 3, and a reversing auxiliary assembly 6 arranged inside the deflection frame 14 for assisting the reversing of the deflection wheel 16; the trigger assembly 2 comprises a support frame 21 arranged at the top of the machine body 11, a one-way piece 22 rotatably connected to one side of the top of the support frame 21, the one-way piece 22 being composed of a column and a ratchet groove 221 opened on one side of the column and a plurality of annular array grooves 222 opened on the other side thereof, a trigger plate 23 rotatably connected to the rotating shaft of the support frame 21, a ratchet block 24 rotatably arranged at the top of the ratchet groove 221 on one side of the trigger plate 23, and torsional springs installed between the ratchet block 24 and the rotating shaft of the trigger plate 23 and between the trigger plate 23 and the rotating shaft of the support frame 21, which are not shown in the figure; the pushing assembly 3 is used to push the reversing assembly 4 to reverse after polishing the steel pipe once, and comprises a rotating groove 31 opened on the side of the groove 222, and a clamping groove 32 opened at the top of the junction of the two grooves 222, respectively, a positioning ball 33 abutting in the clamping groove 32, and a pushing rod 34 fixedly connected to one side of the positioning ball 33; the reversing assembly 4 is used to push the plurality of deflection frames 14 and the deflection wheels 16 to reverse, and comprises a reversing rod group fixedly connected to one side of the pushing rod 34, and a reversing plate 41 arranged on one side of the reversing rod group and fixedly connected to the top of one end of the deflection frame 14.

[0039] Specifically, when polishing the steel pipe, the steel pipe is placed between the supporting roller 13 and the deflection wheel 16, the polishing devices 12 on both sides are adjusted to the appropriate position for polishing the steel pipe, the two polishing wheels rotate in the same direction, after the motor is started, the polishing wheel rotates to make the steel pipe rotate, and the steel pipe rotates between the supporting roller 13 and the deflection wheel 16, and the plurality of deflection wheels 16 are arranged in an inclined state, so that the steel pipe advances during polishing. When the steel pipe enters the trigger assembly 2, the end of the steel pipe abuts against the extrusion slope 8, so that the trigger plate 23 rotates, and the steel pipe continuously advances during polishing. When the trigger plate 23 rotates, the ratchet block 24 slides on one side of the ratchet groove 221, at this time, the one-way piece 22 does not rotate, that is, the ratchet block 24 and the ratchet groove 221 are similar to a ratchet mechanism, and have a one-way pushing effect. When one end of the steel pipe is separated from the extrusion of the trigger plate 23, the trigger plate 23 is reset and rotated under the action of the torsional spring, at this time, the ratchet block 24 abuts against the ratchet groove 221, and drives the one-way piece 22 to rotate, at this time, the push rod 34 slides in the concave groove 222 along the rotating groove 31, so that the positioning ball 33 slides out of the positioning groove 54 to the bottom of the concave groove 222, at this time, the push rod 34 synchronously drives the reversing lever group to move towards the bottom of the concave groove 222, and synchronously drives the reversing plate 41 to move, the reversing plate 41 rotates towards the other side under the action of the positioning assembly 5, so that the entire deflection wheel 16 is uniformly deflected in the opposite direction, at this time, the steel pipe has not yet separated from the polishing of the polishing wheel, and the steel pipe moves in the opposite direction due to the deflection of the deflection wheel 16, thereby realizing automatic reciprocating polishing of the steel pipe. If the polishing is completed, the motor can be controlled to be turned off, so as to stop polishing.

[0040] The production line realizes the adaptation to stainless steel pipes with different diameters through the coordinated design of the adjustable polishing device 12, the deflection frame 14 and the supporting roller 13. The reciprocating unit realizes the closed loop process of forward polishing, automatic reversing and reverse polishing of the steel pipe, and can continuously and automatically polish according to the polishing requirements of different high smoothness until the polishing is qualified, and can eliminate the polishing blind area. When polishing in one direction, the steel pipe may have local polishing omissions (such as small concave pipe wall and interface weld on both sides) due to self-weight or roundness error. When polishing in the opposite direction, the polishing wheel contacts the pipe wall from the other side, which can cover the area that is not polished in the forward direction. The surface texture is optimized, the forward polishing forms a single texture along the feeding direction, and the reverse polishing forms a cross texture, which is easier to form a uniform mirror surface after subsequent polishing, avoiding uneven light reflection caused by single texture. In addition, it also has the function of compensating the centering error. When the steel pipe moves forward, the centering may be deviated due to the slight jumping of the conveying mechanism (such as uniform polishing pressure at the front end, and pressure fluctuation at the rear end due to deviation). When the steel pipe moves in the opposite direction, the secondary centering caused by the reversing of the deflection frame 14 can offset part of the error, thereby ensuring the consistency of the full-length polishing. The production line can realize "two-way complementary polishing" without manual intervention, significantly improve the stability of high smoothness (such as medical-grade and semiconductor stainless steel pipes), and reduce the waste caused by uneven polishing.

[0041] With reference to Figures 6-7 The pushing assembly 3 further comprises a limiting groove equidistantly arranged along the surface of the continuous groove 222, not shown in the figure, which functions as a limiting part and is arranged in the rotating groove 31, a connecting rod fixedly connected to one side of the positioning ball 33, and a limiting ball 35 fixedly connected to one side of the connecting rod and slidingly connected in the limiting groove.

[0042] Specifically, when the one-way piece 22 is pushed to rotate in one direction by the ratchet block 24, the limiting ball 35 slides in the limiting groove, so that the positioning ball 33 slides along the side edge of the groove 222 to the bottom. The arrangement of the grooves 222 enables the pushing rod 34 to repeatedly reciprocate when the one-way piece 22 rotates.

[0043] With reference to Figures 7-8 The reversing rod set is composed of two reversing rods 42 and a fixed plate fixedly connected to the two ends of the reversing rods 42, and the reversing assembly 4 further comprises a plurality of sets of two reversing blocks 43 fixedly connected to the reversing rods 42 near one side of the deflection wheel 16, a movable hole 44 arranged on the top of the reversing plate 41, and the reversing rod 42 near one side of the deflection wheel 16 passing through the movable hole 44. The two reversing blocks 43 are arranged on the two sides of the reversing plate 41, respectively. The positioning assembly 5 is further arranged between the strip-shaped plate 15 and the deflection frame 14.

[0044] Specifically, when the reversing rod 42 is pushed to move by the pushing rod 34, the reversing blocks 43 on the reversing rod 42 near one side of the deflection wheel 16 push the reversing plate 41 to move, so that the deflection frame 14 synchronously rotates. The movable hole 44 is arranged to be large in size, so as to facilitate the reversing blocks 43 to move without interfering with the rotation of the reversing plate 41 when the reversing plate 41 is pushed to rotate. The two reversing blocks 43 are arranged on the two sides of the reversing plate 41, respectively, and the reversing rod 42 passes through the large-size movable hole 44 of the reversing plate 41, which solves the problem of matching the linear pushing and the rotational deflection.

[0045] Embodiment 2

[0046] With reference to Figures 10-11 For the second embodiment of the present application, the difference from the first embodiment is that the positioning assembly 5 comprises a fixed cylinder 51 fixedly connected to the bottom of one side of the deflection frame 14, a positioning spring 52 fixedly connected in the fixed cylinder 51, a positioning block 53 fixedly connected to the bottom of the positioning spring 52, and the top of the positioning block 53 slidingly connected in the fixed cylinder 51, a positioning groove 54 arranged on the top of the strip-shaped plate 15, and the middle part of the positioning groove 54 being convex.

[0047] Specifically, when the reversing plate 41 rotates, the positioning block 53 moves from one side of the positioning groove 54 to the other side, and in the process of moving, the positioning block 53 slides along the positioning groove 54, the positioning block 53 compresses the positioning spring 52, the positioning spring 52 is compressed, and when the positioning block 53 moves to the middle of the positioning groove 54, it automatically slides to the other side of the positioning groove 54 under the action of the slope of the positioning groove 54 and the reset of the positioning spring 52, realizing the rotation of the deflection wheel 16 driven by the deflection frame 14. Thus, the change of the direction of the steel pipe during polishing is realized.

[0048] Referring to Figures 8-9 When the positioning assembly 5 is in the positioning state, the positioning block 53 is located in one end of the positioning groove 54.

[0049] Specifically, the two ends of the positioning groove 54 are the fixed working positions of the deflection wheel 16 for “forward guiding the steel pipe to advance” or “reverse guiding the steel pipe to retreat”, and when the positioning block 53 is clamped in the groove end, “double locking” is formed by the pre-tightening force of the positioning spring 52 and the blocking force of the end wall of the positioning groove 54. During polishing, the deflection wheel 16 is prevented from being “topped” by the reaction force of the self-rotation of the steel pipe or the radial friction force of the polishing wheel (for example, the inclination angle of the deflection wheel 16 is accidentally reduced or increased). It is ensured that the steel pipe always moves smoothly along the preset track (without deviation, jamming or sudden speed change), thereby ensuring the uniformity of polishing of the outer circle of the stainless steel pipe, avoiding “local over-polishing (due to jamming)” or “missing polishing (due to deviation from the polishing wheel)”, and directly ensuring the polishing standard of high smoothness. The rest of the structure is the same as that of example 1.

[0050] Example 3

[0051] Referring to Figure 11 For the third embodiment of the application, the difference between this embodiment and the first embodiment is that the reversing auxiliary assembly 6 includes a rotating block 61 fixedly connected to the bottom of the deflection frame 14 away from the fixed cylinder 51, the rotating block 61 is in the shape of an inverted T, a sliding block 62 is limitingly and rotatably connected to the bottom of the rotating block 61, an auxiliary spring 63 is fixedly connected to one side of the sliding block 62, and the auxiliary spring 63 is fixedly connected in a cavity formed in the strip-shaped plate 15.

[0052] Specifically, since the deflection wheel 16 is initially in an inclined state, when the steel pipe reverses, the deflection wheel 16 is resisted and rotated, at this time, the auxiliary spring 63 is stretched, and the rotating block 61 is rotated on one side of the sliding block 62. When the steel pipe reverses, the deflection wheel 16 is resisted and rotated by the steel pipe, the auxiliary spring 63 is stretched and stores elastic potential energy. This process has a double effect, the elastic deformation of the spring absorbs the kinetic energy at the moment of reversing of the steel pipe, avoids rigid collision between the deflection wheel 16 and the steel pipe, reduces equipment wear (such as fatigue loss of the deflection wheel 16 bearing and rotating shaft), and prolongs the service life of key components. For example, when the steel pipe is switched from forward polishing to reverse retreat, the stretching of the spring can offset the impact force caused by the inertia of the steel pipe, prevent the deflection frame 14 from shaking violently, and buffer the reversing impact force. When the positioning block 53 passes the middle protrusion of the positioning groove 54, the spring releases the stored energy, and forms a "double thrust" with the return force of the positioning spring 52, accelerating the deflection wheel 16 to return to the initial inclined state. This "energy storage and release" mechanism shortens the reversing time and improves the efficiency of the production line.

[0053] With reference to Figures 3-6 , the trigger plate 23 is in an arc shape, and a plurality of rolling balls 7 are uniformly rotationally connected at the ends of the trigger plate 23, and extrusion inclined surfaces 8 are formed at both sides of the ends.

[0054] Specifically, the extrusion inclined surfaces 8 facilitate extrusion during reciprocating movement of the steel pipe, so that the trigger plate 23 can be extruded and rotated, and the rolling balls 7 can roll on the surface of the steel pipe, reducing the friction between the rolling balls 7 and the surface of the steel pipe.

[0055] With reference to Figures 3-5 , the middle part of the push rod 34 is further slidingly connected with a limiting frame 9, the middle part of the push rod 34 is slidingly connected with the limiting frame 9, and the limiting frame 9 is fixedly connected with the support frame 21 and the strip-shaped plate 15.

[0056] Specifically, the limiting frame 9 is used for limiting the push rod 34 horizontally, improving the stability of reversing.

[0057] With reference to Figures 2-4 , both ends of the strip-shaped plate 15 are provided with bolts, and the top of the machine body 11 is provided with a moving groove for movement and fixation of the bolts.

[0058] Specifically, the entire reciprocating unit can be adjusted to facilitate the polishing of steel pipes of different diameters. The remaining structures are the same as those of embodiment 2.

[0059] In combination with Embodiment 1-2, the working principle of the present application is as follows: when the production line is working, the steel pipe is first placed between the feeding rack 1 and the support roller 13 and the inclined deflection wheel 16 of the machine body 11, and the polishing wheel is adapted to the diameter of the steel pipe by adjusting the strip-shaped plate 15 bolted along the moving groove of the machine body 11 and cooperating with the adjustable polishing device 12. The motor drives the polishing wheel to rotate in the same direction, driving the steel pipe to rotate, and at the same time, under the action of the inclined deflection wheel 16, the steel pipe moves smoothly in the preset direction, completing the forward polishing. When the end of the steel pipe extrudes the arc-shaped trigger plate 23 (the end ball 7 reduces friction), when the trigger plate 23 rotates, the ratchet block 24 only slides along the ratchet groove 221 of the one-way piece 22, without driving the one-way piece 22; after the steel pipe is separated, the trigger plate 23 is reset by the torsional spring, the ratchet block 24 is clamped into the ratchet groove 221 and drives the one-way piece 22 to rotate, pushing the positioning ball 33 and the limiting ball 35 of the pushing assembly 3 to slide along the groove 222 and the limiting groove, driving the reversing lever group to move. The double reversing blocks 43 on the reversing lever 42 push the reversing plate 41, combined with the positioning assembly 5 (the positioning block 53 slides along the positioning groove 54 of the middle protrusion, and the positioning spring 52 assists in resetting), so that the deflection frame 14 is synchronously reversed, and the auxiliary spring 63 of the reversing auxiliary assembly 6 buffers the reversing impact and assists in resetting. At this time, the steel pipe is still in the range of the polishing wheel, and moves reversely with the deflection wheel 16, realizing reverse polishing, which can be automatically cycled until the standard is reached. Without manual intervention, the polishing blind area is automatically eliminated, the surface texture is optimized, and the high smoothness and polishing consistency of the stainless steel pipe are ensured.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. An automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter, comprising two feeding racks, a machine body positioned between the two feeding racks, and two adjustable grinding devices on the top of the machine body. Each grinding device includes a motor on the top of the machine body, a grinding wheel at one end of the motor's output shaft, a support roller in the middle of the two grinding wheels, several deflecting frames arranged in a linear array on one side of the support roller, a strip plate at the bottom of the deflecting frames and fixedly connected to the machine body, a deflecting wheel at the top of the deflecting frames, and a steel pipe positioned between the support roller and the several deflecting wheels. Its characteristic feature is that: It also includes a reciprocating unit located on one side of the bias wheel and at one end of one of the grinding wheels; The reciprocating unit includes a triggering component disposed on one side of the grinding wheel, a pushing component disposed on one side of the triggering component, a reversing component disposed at the bottom of the pushing component, and a reversing auxiliary component disposed inside the deflection frame for assisting the deflection wheel in reversing direction. The triggering assembly includes a support frame disposed on the top of the body, a one-way component disposed on one side of the top of the support frame, the one-way component consisting of a column and a ratchet groove opened on one side of the column and a ring array of grooves opened on the other side thereon, a trigger plate disposed on the rotating shaft of the support frame, a rotatable ratchet block disposed on one side of the trigger plate and located at the top of the ratchet groove, and torsion springs are disposed between the ratchet block and the rotating shaft of the trigger plate, and between the trigger plate and the rotating shaft of the support frame. The pushing component is used to push the reversing component to reverse the grinding direction after the steel pipe is ground once. It includes a rotating groove opened on the side of the groove, a locking groove respectively set at the top of the junction of the two grooves, a positioning ball set in the locking groove, and a pushing rod set on one side of the positioning ball. The reversing assembly is used to drive several yaw frames and yaw wheels to change direction. It includes a reversing rod group disposed on one side of the push rod, a reversing plate disposed on one side of the reversing rod group and disposed at the top of one end of the yaw frame, and the reversing assembly also includes several groups of two reversing blocks disposed on the reversing rod near the yaw wheel. A movable hole is opened on one side of the top of the reversing plate. The reversing rod near the yaw wheel passes through the movable hole, and the two reversing blocks are respectively disposed on both sides of the reversing plate. A positioning assembly is also disposed between the strip plate and the yaw frame.

2. The automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter as described in claim 1, characterized in that: The pushing component also includes a limiting groove that is equidistantly opened along the surface of the continuous groove, and the limiting groove is opened in the rotating groove, a connecting rod is set on one side of the positioning ball, a limiting ball is set on one side of the connecting rod, and the limiting ball is slidably connected in the limiting groove.

3. The automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter as described in claim 1, characterized in that: The reversing rod assembly consists of two reversing rods and a fixing plate that is fixedly connected to both ends of the rods.

4. The automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter as described in claim 3, characterized in that: The positioning assembly includes a fixed cylinder disposed at the bottom of one side of the biasing frame, a positioning spring disposed inside the fixed cylinder, a positioning block disposed at the bottom of the positioning spring, and the top of the positioning block being slidably connected inside the fixed cylinder, and a positioning groove opened on the top of the strip plate, the middle of the positioning groove being raised.

5. The automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter as described in claim 4, characterized in that: When the positioning component is in the positioning state, the positioning block is located in one end of the positioning groove.

6. The automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter as described in claim 1, characterized in that: The reversing auxiliary component includes a rotating block disposed at the bottom of the deflector on the side away from the fixed cylinder, a sliding block rotatably connected to the bottom of the rotating block, an auxiliary spring disposed on one side of the sliding block, and the auxiliary spring being disposed in a cavity opened in the strip plate.

7. The automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter as described in claim 1, characterized in that: The trigger plate is arc-shaped, with balls evenly distributed at its end, and extrusion slopes are provided on both sides of its end.

8. The automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter as described in claim 1, characterized in that: The middle part of the push rod is also provided with a limit frame, and the middle part of the push rod is slidably connected to the limit frame. The limit frame is fixedly connected to the support frame and the strip plate respectively.

9. The automatic grinding production line for high-gloss stainless steel pipes with adaptive diameter as described in claim 1, characterized in that: Bolts are provided at both ends of the strip plate, and a moving groove is provided on the top of the machine body for moving and fixing the bolts.

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