Automatic discharging equipment for plastic-coated steel pipe production and working method of automatic discharging equipment

Abstract

The invention discloses automatic discharging equipment for plastic-coated steel pipe production and a working method thereof.The automatic discharging equipment comprises an inclined plate and a spacing mechanism, the spacing mechanism comprises a through groove, the through groove is formed in a body of the inclined plate and is in a through state, an abutting plate is slidably connected into the through groove, and fixing plates are fixedly connected to the two sides of the outer surface of the abutting plate; the outer surfaces of the fixing plates on the two sides are both fixedly connected with the outer surface of an inclined plate, the abutting plate is fixedly connected with a clamping plate through a connecting piece, a clamping groove is formed in the outer surface of the clamping plate, the interior of the clamping groove is movably connected with the interiors of the fixing plates, and the outer surface of the abutting plate is movably connected with a fixing frame. The problems that when an existing automatic discharging device for the plastic-coated steel pipes is used, due to the fact that automatic discharging of the plastic-coated steel pipes is achieved in an inclined rolling mode, the kinetic energy of the plastic-coated steel pipes at the discharging tail end is large, and the generated impact force easily causes damage to the plastic-coated steel pipes are solved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic-coated steel pipe production, and in particular to automatic unloading equipment for plastic-coated steel pipe production and a working method thereof. Background Art

[0002] After the plastic-coated steel pipes of the plastic-coated line come out of the drying room, they are mostly unloaded manually by two people, which is not only inefficient and labor-intensive, but also has safety hazards and high labor costs. An automatic unloading equipment for plastic-coated steel pipes with application number CN201721240525.8, including plastic-coated steel pipe hangers and plastic-coated steel pipe hanger conveyor chains, realizes the automatic unloading of plastic-coated steel pipes of the plastic-coated line, reduces the labor intensity of workers, eliminates safety hazards, and reduces the production cost of plastic-coated steel pipes; and an automatic unloading equipment for plastic-coated steel pipe processing with application number CN201922462041.3, including a buffer table and a unloading rack, can realize the transportation of plastic-coated steel pipes by tilting the unloading rack and the buffer table, so as to achieve the effect of unpowered automatic unloading of plastic-coated steel pipes, greatly reduce the energy consumption of the unloading equipment, and help to reduce production costs.

[0003] Although the two devices have the above-mentioned advantages, they have common defects in actual use. Since the two devices both use inclined plates to make the plastic-coated steel pipes automatically roll down for automatic unloading, but no protective measures or receiving measures are provided at the unloading end, resulting in the plastic-coated steel pipes having large kinetic energy at the unloading end. After contacting the outside or the plastic-coated steel pipes contacting each other, they are easily affected by the impact force generated by the kinetic energy, causing damage to the plastic-coated steel pipes. Therefore, it is necessary to solve the shortcomings that still exist in the existing devices. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automatic unloading device for the production of plastic-coated steel pipes and a working method thereof, which solves the problem that when the existing automatic unloading device for plastic-coated steel pipes is used, the plastic-coated steel pipes are automatically unloaded in a tilted rolling manner, resulting in large kinetic energy of the plastic-coated steel pipes at the end of unloading, and the impact force generated can easily cause damage to the plastic-coated steel pipes.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: An automatic unloading device for the production of plastic-coated steel pipes, including an inclined plate and a spacing mechanism. The spacing mechanism includes a through groove, which is opened on the body of the inclined plate and is in a through state. A resisting plate is slidably connected inside the through groove. On both sides of the outer surface of the resisting plate, fixed plates are fixedly connected. The outer surfaces of both fixed plates are fixedly connected to the outer surface of the inclined plate. The resisting plate is fixedly connected with a clamping plate through a connecting member. A clamping groove is opened on the outer surface of the clamping plate, and the inside of the clamping groove is movably connected with the inside of the fixed plate. The outer surface of the resisting plate is movably connected with a fixed frame, and the outer surface of the fixed frame is fixedly connected to the outer surface of the inclined plate. A clamping groove is opened on the body of the fixed frame, and a clamping strip is slidably connected inside the clamping groove. One end of the clamping strip is fixedly connected to the outer surface of the resisting plate;

[0006] A driving component, which is arranged outside the clamping strip and, through an oblique abutting action, pushes the clamping strip to drive the resisting plate and the clamping plate to move;

[0007] A bottom buffering component, which is arranged outside the resisting plate and buffers the kinetic energy of the plastic-coated steel pipe at the end of the blanking.

[0008] Preferably, the connecting member includes a sliding rod. One end of the sliding rod sequentially penetrates and slidably connects through the bodies of the inclined plate and the fixed plate. One end of the sliding rod is fixedly connected to the inside of the clamping groove. The other end of the sliding rod is fixedly connected with a connecting plate, and the outer surface of the connecting plate is fixedly connected to the outer surface of the resisting plate. A tension spring is sleeved outside the sliding rod, and both ends of the tension spring are fixedly connected to the outer surfaces of the inclined plate and the connecting plate respectively.

[0009] Preferably, the driving component includes a sliding groove, which is opened on the body of the fixed frame and is in a through state. The inside of the sliding groove is connected to the inside of the clamping groove. A sliding plate is slidably connected inside the sliding groove. A resisting groove is opened on the outer surface of the sliding plate, and the other end of the clamping strip abuts against the inside of the resisting groove.

[0010] Preferably, a cam is arranged outside the sliding plate. A rotating rod penetrates and is fixedly connected to the body of the cam. The outer surface of the rotating rod penetrates and is rotatably connected with a support strip, and the outer surface of the support strip is fixedly connected to the outer surface of the inclined plate.

[0011] Preferably, a circular groove is opened on the outer surface of the cam, and a clamping rod is movably connected inside the circular groove. One end of the clamping rod is fixedly connected to the outer surface of the sliding plate.

[0012] Preferably, a linkage unit is arranged outside the rotating rod. The linkage unit includes a worm. The outer surface of the worm penetrates and is rotatably connected with a fixed strip, and the outer surface of the fixed strip is fixedly connected to the outer surface of the inclined plate. The outer surface of the worm meshes with a worm gear, and the body of the worm gear is fixedly connected to the outer surface of the rotating rod through penetration.

[0013] Preferably, a transmission belt is sleeved outside the worm, and two transmission wheels are drivingly connected to the outer surface of the transmission belt. The body of one side transmission wheel is fixedly connected through the outer surface of the worm, and the body of the other side transmission wheel is fixedly connected through a transmission rod.

[0014] Preferably, the bottom buffer assembly includes a rotating groove, which is opened on the outer surface of the inclined plate. A rotating plate is rotatably connected inside the rotating groove. A support rod is fixedly connected through the body of the rotating plate, and the outer surface of the support rod is rotatably connected through the body of the inclined plate.

[0015] Preferably, the bottom buffer assembly includes a groove, which is opened on the outer surface of the inclined plate. One end of the support rod extends into the groove. A gear is fixedly connected through the outer surface of the support rod. A rack is engaged with the outer surface of the gear. A fixed rod is fixedly connected through the body of the rack. Both ends of the fixed rod are fixedly connected to the inside of the groove. A ring is slidably connected to the outer surface of the fixed rod. A compression spring is sleeved on the outer surface of the fixed rod. Both ends of the compression spring are fixedly connected to the outer surfaces of the rack and the ring respectively. A nut is threadedly connected to the outer surface of the fixed rod, and the outer surface of the nut abuts against the outer surface of the ring.

[0016] The present invention also discloses a working method of an automatic unloading device for the production of plastic-coated steel pipes, which specifically includes the following steps:

[0017] Step 1: The plastic-coated steel pipes are conveyed by a conveyor and fall on the inclined plate. The slide plate slides and follows the slide through the abutting groove and the clamping strip. The clamping strip drives the abutting plate to slide to block all the plastic-coated steel pipes. Then, after the abutting plate moves back to its original position, it drives the clamping plate to move through the slide rod, and the clamping plate blocks the plastic-coated steel pipes adjacent to the lowermost plastic-coated steel pipe. The lowermost plastic-coated steel pipe slides down through the inclined plate, and then through the sequential blocking of multiple groups of clamping plates and abutting plates, the kinetic energy of the plastic-coated steel pipes sliding down is reduced.

[0018] Step 2: By using the connection between the transmission rod and the shaft end of the conveyor, as well as the transmission of the transmission belt and the transmission wheels, and the transmission of the worm gear and the worm, the rotating rod drives multiple cams to rotate. And through the staggered arrangement of the cams, the adjacent two groups of clamping plates and abutting plates sequentially block the plastic-coated steel pipes.

[0019] Step 3: When the plastic-coated steel pipe reaches the end of the slide, the rotating plate blocks it. The plastic-coated steel pipe thus pushes the rotating plate to rotate. The support rod meshes with the gear and the rack, so that the rack slides to compress the compression spring, and thus the elastic force of the compression spring buffers the plastic-coated steel pipe again.

[0020] Beneficial effects

[0021] The present invention provides an automatic unloading device for the production of plastic-coated steel pipes and its working method. Compared with the prior art, it has the following beneficial effects:

[0022] (1) By setting the spacing mechanism, using the up and down movement of the abutting plate and the clamping plate, multiple plastic-coated steel pipes can be sequentially separated. And during the rolling process of the plastic-coated steel pipes, through multiple groups of abutting plates and clamping plates to sequentially block the plastic-coated steel pipes, the kinetic energy of the plastic-coated steel pipes when rolling is reduced, and thus the kinetic energy of the plastic-coated steel pipes at the end of unloading is reduced, avoiding damage when the plastic-coated steel pipes contact external objects. At the same time, due to the spaced unloading, the problem of damage caused by mutual collision between plastic-coated steel pipes is also avoided.

[0023] (2) By setting the driving component, the sliding of the sliding plate through the abutting of the abutting groove and the clamping strip can drive the clamping plate and the abutting plate to move synchronously to separate and unload the plastic-coated steel pipes. At the same time, the misaligned setting of the cam enables the adjacent two groups of clamping plates and abutting plates to sequentially block the unloaded plastic-coated steel pipes, so that the unloading of the plastic-coated steel pipes proceeds orderly, and the weakening of the kinetic energy of the plastic-coated steel pipes during the unloading process is maintained.

[0024] (3) By setting the linkage component, using the connection of the transmission rod to the shaft end of the conveyor, and through the transmission of the transmission belt and the transmission wheel, as well as the transmission of the worm and the worm gear, the conveying of the plastic-coated steel pipes by the conveyor is adapted to the blocking of the plastic-coated steel pipes by the clamping plate and the abutting plate, thereby improving the coherence during unloading.

[0025] (4) By setting the bottom buffering component, the rotation of the rotating plate drives the rack to compress the compression spring, thereby buffering the plastic-coated steel pipes at the end of unloading through the elastic force, further reducing the kinetic energy of the plastic-coated steel pipes, and avoiding the problem that the distance between the end of unloading and the ground or the receiving object is too small, resulting in insufficient movement space for the clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional external structure diagram of the present invention;

[0027] Figure 2 is a three-dimensional external structure diagram of the abutting plate of the present invention;

[0028] Figure 3 is a three-dimensional external structure diagram of the sliding plate of the present invention;

[0029] Figure 4 is a three-dimensional external structure diagram of the worm of the present invention;

[0030] Figure 5 is a three-dimensional external structure diagram of the rack of the present invention.

[0031] In the figure: 1, inclined plate; 2, through groove; 3, abutting plate; 4, driving assembly; 41, sliding groove; 42, sliding plate; 43, abutting groove; 44, cam; 45, rotating rod; 46, linkage unit; 461, worm; 462, fixing strip; 463, worm gear; 464, transmission belt; 465, transmission wheel; 466, transmission rod; 47, support strip; 48, circular groove; 49, clamping rod; 5, bottom buffer assembly; 51, rotating groove; 52, rotating plate; 53, support rod; 54, groove; 55, gear; 56, rack; 57, fixing rod; 58, ring; 59, compression spring; 510, nut; 6, fixing plate; 7, clamping plate; 8, clamping groove; 9, fixing frame; 10, clamping slot; 11, clamping strip; 12, sliding rod; 13, connecting plate; 14, tension spring. Specific implementation manner

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-5 , the present invention provides a technical solution: an automatic unloading device for the production of coated steel pipes:

[0034] Example 1: Refer to the attached drawings of the specification Figure 1 and the attached Figure 2 ;

[0035] It includes an inclined plate 1. The inclined plate 1 is the unloading platform of an existing automatic unloading device, which is inclined and connected with a conveyor on one side at the upper part. An interval mechanism is arranged on the body of the inclined plate 1. The interval mechanism includes a through groove 2. The through groove 2 is opened on the body of the inclined plate 1 and is in a through state. A resisting plate 3 is slidably connected inside the through groove 2. Fixing plates 6 are fixedly connected to both sides of the outer surface of the resisting plate 3. The distance between the two fixing plates 6 is adapted to the pipe length dimension of the coated steel pipe to improve the stability when the coated steel pipe rolls down. The outer surfaces of the two fixing plates 6 are fixedly connected to the outer surface of the inclined plate 1. The resisting plate 3 is fixedly connected with a clamping plate 7 through a connecting piece. A clamping groove 8 is opened on the outer surface of the clamping plate 7, and the inside of the clamping groove 8 is movably connected with the inside of the fixing plate 6. A fixing frame 9 is movably connected to the outer surface of the resisting plate 3. The fixing frame 9 can support and limit the resisting plate 3. The outer surface of the fixing frame 9 is fixedly connected to the outer surface of the inclined plate 1. A clamping groove 10 is opened on the body of the fixing frame 9. A clamping bar 11 is slidably connected inside the clamping groove 10. One end of the clamping bar 11 is provided with a chamfer, and one end of the clamping bar 11 is fixedly connected to the outer surface of the resisting plate 3. The connecting piece includes a sliding rod 12. One end of the sliding rod 12 sequentially penetrates and slides through the bodies of the inclined plate 1 and the fixing plate 6. One end of the sliding rod 12 is fixedly connected to the inside of the clamping groove 8. The other end of the sliding rod 12 is fixedly connected with a connecting plate 13. The connecting plate 13 limits the movement of the resisting plate 3 by abutting against the inclined plate 1. The outer surface of the connecting plate 13 is fixedly connected to the outer surface of the resisting plate 3. A tension spring 14 is sleeved outside the sliding rod 12. The tension spring 14 can facilitate the reset of the resisting plate 3 through elastic expansion and contraction. The two ends of the tension spring 14 are respectively fixedly connected to the outer surfaces of the inclined plate 1 and the connecting plate 13.

[0036] In this embodiment, the conveyor conveys the coated steel pipes and makes the coated steel pipes fall and accumulate on the inclined plate 1. The clamping bar 11 drives the resisting plate 3 to slide out from the inside of the through groove 2 by being abutted, so as to block all the coated steel pipes with the lowermost coated steel pipe, and drive the clamping plate 7 to move synchronously through the connecting plate 13 and the sliding rod 12. At the same time, the connecting plate 13 compresses the tension spring 14. When the clamping bar 11 is disengaged from the abutment, the tension spring 14 rebounds to make the clamping plate 7 and the resisting plate 3 reset. The resisting plate 3 disengages from the block of the lowermost coated steel pipe, and it rolls down along the inclined plate 1 for automatic unloading. At the same time, the clamping plate 7 resets to block the current lowermost coated steel pipe, and is blocked by the resisting plate 3 when the clamping plate 7 rises again, so that all the coated steel pipes are separated for intermittent unloading. And the rolling coated steel pipes are blocked by multiple groups of clamping plates 7 and resisting plates 3, reducing the kinetic energy when rolling, thus avoiding the problem that the kinetic energy of the coated steel pipes at the end of unloading is too large, resulting in damage to the coated steel pipes due to collision.

[0037] Embodiment Two: On the basis of Embodiment One, referring to the appended drawings of the specification Figure 1 and appended Figure 3 ;

[0038] A driving component 4 is arranged outside the bottom plate 3. The driving component 4 includes a sliding groove 41. The sliding groove 41 is opened on the body of the fixed frame 9 and is in a penetrating state. The inside of the sliding groove 41 is connected to the inside of the clamping groove 10. A sliding plate 42 is slidably connected inside the sliding groove 41. An abutting groove 43 is opened on the outer surface of the sliding plate 42. The cross-section of the abutting groove 43 is triangular, and the slope of its hypotenuse is adapted to the slope of the chamfer of the clamping bar 11, so as to push the clamping bar 11 to move through oblique abutting. The inside of the abutting groove 43 abuts against the other end of the clamping bar 11. A cam 44 is arranged outside the sliding plate 42. The cam 44 can push the sliding plate 42 to slide through the length difference at both ends during rotation, so as to drive the clamping bar 11 to move. A rotating rod 45 is fixedly connected through the body of the cam 44. A plurality of cams 44 are arranged on the rotating rod 45 at equal intervals. The specific quantity is the same as that of the bottom plates 3, and two adjacent cams 44 are arranged in a staggered manner, that is, the rotation angles of two adjacent cams 44 differ by 180°. A support bar 47 is rotatably connected through the outer surface of the rotating rod 45. The support bar 47 and the rotating rod 45 can be connected through a bearing. The outer surface of the support bar 47 is fixedly connected to the outer surface of the inclined plate 1. An annular groove 48 is opened on the outer surface of the cam 44. The contour of the annular groove 48 is similar to the contour of the cam 44. A clamping rod 49 is movably connected inside the annular groove 48. The clamping rod 49 can drive the sliding plate 42 to move synchronously with the cam 44 by moving inside the annular groove 48. One end of the clamping rod 49 is fixedly connected to the outer surface of the sliding plate 42.

[0039] In this embodiment, the rotating rod 45 rotates to drive the cam 44 to rotate accordingly. The rotation of the cam 44 makes the clamping rod 49 move synchronously inside the annular groove 48, so that the sliding plate 42 reciprocates with the cam. The movement of the sliding plate 42 pushes the clamping bar 11 to drive the bottom plate 3 to move through the oblique abutting action between the hypotenuse of the abutting groove 43 and the chamfer of the clamping bar 11. When the sliding plate 42 moves back to its original position, the clamping rod 44 moves inside the abutting groove 43 to facilitate the reset of the bottom plate 3.

[0040] Embodiment 3: On the basis of Embodiment 2, refer to the appended drawings of the specification Figure 1 and appended Figure 4 ;

[0041] A linkage unit 46 is provided on the outer part of the rotating rod 45. The linkage unit 46 includes a worm 461. A fixed bar 462 is rotatably connected through the outer surface of the worm 461. The worm 461 and the fixed bar 462 can be fixedly connected through a bearing. The outer surface of the fixed bar 462 is fixedly connected to the outer surface of the inclined plate 1. A worm gear 463 is meshed with the outer surface of the worm 461. The connection between the worm 461 and the worm gear 463 can not only achieve reverse transmission but also ensure the stability of transmission. The body of the worm gear 463 is fixedly connected through the outer surface of the rotating rod 45. A transmission belt 464 is sleeved on the outer part of the worm 461. Two transmission wheels 465 are drivingly connected to the outer surface of the transmission belt 464. The size (i.e., transmission ratio) between the transmission wheels 465 can be set according to the size of the plastic-coated steel pipe to adapt to the conveying and separated discharging of the plastic-coated steel pipe. The body of one side transmission wheel 465 is fixedly connected through the outer surface of the worm 461. The body of the other side transmission wheel 465 is fixedly connected with a transmission rod 466. One end of the transmission rod 466 can be connected to the driving end of the conveyor by means of a coupling or welding to realize the linkage between the baffle 3 and the conveyor.

[0042] In this embodiment, the driving end of the driving machine drives the transmission rod 466 to rotate synchronously. Through the driving connection of the transmission wheels 465 and the transmission belt 464, the worm 461 rotates accordingly. By using the meshing between the worm 461 and the worm gear 463, the worm gear 463 drives the rotating rod 45 to rotate through vertical transmission. This can not only obtain power for the movement of the baffle 3 but also realize the adaptation and linkage between the baffle 3 and the conveyor.

[0043] Embodiment 4: On the basis of Embodiment 3, refer to the attached drawings in the specification Figure 1 and the attached Figure 5 ;

[0044] An underbuffer assembly 5 is provided outside the bottom plate 3. The underbuffer assembly 5 includes a rotating groove 51 and a groove 54. The groove 54 can be used for the embedded function of the structure, which can not only protect the structure but also reduce the problem of space occupation. Both the rotating groove 51 and the groove 54 are opened on the outer surface of the inclined plate 1. The rotating groove 51 is opened on the outer surface of the inclined plate 1. A rotating plate 52 is rotatably connected inside the rotating groove 51. When at rest, the rotating plate 52 is perpendicular to the inclined plate 1 to block the coated steel pipe at the unloading end. A support rod 53 is fixedly connected through the body of the rotating plate 52. One end of the support rod 53 is rotatably connected through the body of the inclined plate 1 and extends into the groove 54. A gear 55 is fixedly connected through the outer surface of the support rod 53. A rack 56 is meshed with the outer surface of the gear 55. A fixed rod 57 is fixedly connected through the body of the rack 56. Both ends of the fixed rod 57 are fixedly connected to the inside of the groove 54. A ring 58 is slidably connected to the outer surface of the fixed rod 57. A compression spring 59 is sleeved on the outer surface of the fixed rod 57. When the rotating plate 52 rotates, the rack 56 can slide synchronously, and by compressing the compression spring 59, the function of weakening the kinetic energy of the coated steel pipe by the rotating plate 52 is realized. Both ends of the compression spring 59 are fixedly connected to the outer surface of the rack 56 and the ring 58 respectively. A nut 510 is threadedly connected to the outer surface of the fixed rod 57. The nut 510 moves along the fixed rod 57, and the distance between the ring 58 and one end of the rack 56 can be adjusted, so as to adjust the compression stroke of the compression spring 59, which can not only realize the stability of the elastic force of the compression spring 59 after fatigue but also enhance its elastic force when the compression spring 59 is not fatigued, so that the rotating plate 52 can buffer different types of coated steel pipes. The outer surface of the nut 510 abuts against the outer surface of the ring 58.

[0045] In this embodiment, at the unloading end of the coated steel pipe, the coated steel pipe contacts the rotating plate 52 and presses down the rotating plate 52. The rotating plate 52 then rotates into the rotating groove 51. At the same time, the support rod 53 drives the gear 55 to rotate synchronously, and through the meshing of the gear 55 and the rack 56, the rack 56 slides along the fixed rod 57 inside the groove 54, and the rack 56 simultaneously compresses the compression spring 59, so as to use the elastic force to buffer the kinetic energy of the coated steel pipe, so that the coated steel pipe will not generate a large impact force due to excessive kinetic energy after unloading, thus causing the problem of damage to the coated steel pipe. And by screwing the nut 510 to move on the fixed rod 57 to adjust the compression stroke of the compression spring 59, the pressure of the compression spring 59 can be adjusted, so as to facilitate the buffering function of the rotating plate 52 on the coated steel pipe.

[0046] The present invention also discloses a working method of an automatic unloading device for producing coated steel pipes, which specifically includes the following steps:

[0047] Step 1: The coated steel pipe is conveyed by a conveyor and falls on the inclined plate 1. The sliding plate 42 slides and abuts against the clamping strip 11 through the abutting groove 43 and follows the sliding. The clamping strip 11 drives the abutting plate 3 to slide to block all the coated steel pipes. Then, after the abutting plate 3 moves back to its original position, it drives the clamping plate 7 to move through the sliding rod 12, and the clamping plate 7 blocks the coated steel pipes adjacent to the lowermost coated steel pipe. The lowermost coated steel pipe slides down through the inclined plate 1, and then through the sequential blocking of multiple groups of clamping plates 7 and abutting plates 3, the kinetic energy of the sliding of the coated steel pipe is reduced.

[0048] Step 2: By using the connection between the transmission rod 466 and the shaft end of the conveyor, as well as the transmission of the transmission belt 464 and the transmission wheel 465, and the transmission of the worm gear 463 and the worm 461, the rotating rod 45 drives multiple cams 44 to rotate. And through the staggered arrangement of the cams 44, the adjacent two groups of clamping plates 7 and abutting plates 3 sequentially block the coated steel pipes.

[0049] Step 3: When the coated steel pipe reaches the end of its slide, the rotating plate 52 blocks it. The coated steel pipe thus pushes the rotating plate 52 to rotate. The support rod 53 makes the rack 56 slide through the meshing of the gear 55 and the rack 56, compressing the compression spring 59, and then buffering the coated steel pipe again through the elastic force of the compression spring 59.

[0050] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic unloading device for the production of plastic-coated steel pipes, including an inclined plate (1), characterized in that: Spacer mechanism, the spacer mechanism includes a through groove (2), the through groove (2) is opened on the body of the inclined plate (1) and is in a through state, a resisting plate (3) is slidably connected inside the through groove (2), both sides of the outer surface of the resisting plate (3) are fixedly connected with fixed plates (6), the outer surfaces of both sides of the fixed plates (6) are fixedly connected with the outer surface of the inclined plate (1), the resisting plate (3) is fixedly connected with a clamping plate (7) through a connecting member, a clamping groove (8) is opened on the outer surface of the clamping plate (7), and the inside of the clamping groove (8) is movably connected with the inside of the fixed plate (6), the outer surface of the resisting plate (3) is movably connected with a fixed frame (9), the outer surface of the fixed frame (9) is fixedly connected with the outer surface of the inclined plate (1), a clamping groove (10) is opened on the body of the fixed frame (9), a clamping bar (11) is slidably connected inside the clamping groove (10), and one end of the clamping bar (11) is fixedly connected with the outer surface of the resisting plate (3); Drive assembly (4), the drive assembly (4) is arranged outside the clamping bar (11), and through an oblique abutting action, it pushes the clamping bar (11) to drive the resisting plate (3) and the clamping plate (7) to move; Bottom buffer assembly (5), the bottom buffer assembly (5) is arranged outside the resisting plate (3) to perform kinetic energy buffering on the plastic-coated steel pipe at the end of the blanking.

2. The automatic unloading device for the production of plastic-coated steel pipes according to claim 1, characterized in that: The connecting member includes a sliding rod (12), one end of the sliding rod (12) sequentially passes through and is slidably connected with the bodies of the inclined plate (1) and the fixed plate (6), one end of the sliding rod (12) is fixedly connected with the inside of the clamping groove (8), the other end of the sliding rod (12) is fixedly connected with a connecting plate (13), the outer surface of the connecting plate (13) is fixedly connected with the outer surface of the resisting plate (3), a tension spring (14) is sleeved outside the sliding rod (12), and both ends of the tension spring (14) are fixedly connected with the outer surfaces of the inclined plate (1) and the connecting plate (13) respectively.

3. The automatic unloading device for the production of plastic-coated steel pipes according to claim 2, characterized in that: The drive assembly (4) includes a sliding groove (41), the sliding groove (41) is opened on the body of the fixed frame (9) and is in a through state, the inside of the sliding groove (41) is connected with the inside of the clamping groove (10), a sliding plate (42) is slidably connected inside the sliding groove (41), a resisting groove (43) is opened on the outer surface of the sliding plate (42), and the inside of the resisting groove (43) abuts against the other end of the clamping bar (11).

4. The automatic unloading device for the production of plastic-coated steel pipes according to claim 3, characterized in that: A cam (44) is arranged outside the sliding plate (42), a rotating rod (45) is fixedly connected through the body of the cam (44), a support bar (47) is rotatably connected through the outer surface of the rotating rod (45), and the outer surface of the support bar (47) is fixedly connected with the outer surface of the inclined plate (1).

5. The automatic unloading device for the production of plastic-coated steel pipes according to claim 4, characterized in that: A circular groove (48) is opened on the outer surface of the cam (44), a clamping rod (49) is movably connected inside the circular groove (48), and one end of the clamping rod (49) is fixedly connected with the outer surface of the sliding plate (42).

6. The automatic unloading device for the production of plastic-coated steel pipes according to claim 5, wherein: A linkage unit (46) is arranged outside the rotating rod (45). The linkage unit (46) includes a worm (461). A fixed bar (462) is rotatably connected through the outer surface of the worm (461). The outer surface of the fixed bar (462) is fixedly connected to the outer surface of the inclined plate (1). A worm gear (463) is meshed with the outer surface of the worm (461). The body of the worm gear (463) is fixedly connected through the outer surface of the rotating rod (45).

7. An automatic discharging device for the production of plastic-coated steel pipes according to claim 6, characterized in that: A transmission belt (464) is sleeved outside the worm (461). Two transmission wheels (465) are drivingly connected to the outer surface of the transmission belt (464). The body of one side transmission wheel (465) is fixedly connected through the outer surface of the worm (461). The body of the other side transmission wheel (465) is fixedly connected through a transmission rod (466).

8. The automatic unloading device for the production of plastic-coated steel pipes according to claim 7, characterized in that: The bottom buffer assembly (5) includes a rotating groove (51). The rotating groove (51) is opened on the outer surface of the inclined plate (1). A rotating plate (52) is rotatably connected inside the rotating groove (51). The body of the rotating plate (52) is fixedly connected through a support rod (53). The outer surface of the support rod (53) is rotatably connected through the body of the inclined plate (1).

9. The automatic discharging device for the production of plastic-coated steel pipes according to claim 8, wherein: The bottom buffer assembly (5) includes a groove (54). The groove (54) is opened on the outer surface of the inclined plate (1). One end of the support rod (53) extends into the groove (54). A gear (55) is fixedly connected through the outer surface of the support rod (53). A rack (56) is meshed with the outer surface of the gear (55). The body of the rack (56) is fixedly connected through a fixed rod (57). Both ends of the fixed rod (57) are fixedly connected to the inside of the groove (54). A ring (58) is slidably connected to the outer surface of the fixed rod (57). A compression spring (59) is sleeved on the outer surface of the fixed rod (57). Both ends of the compression spring (59) are respectively fixedly connected to the outer surfaces of the rack (56) and the ring (58). A nut (510) is threadedly connected to the outer surface of the fixed rod (57). The outer surface of the nut (510) abuts against the outer surface of the ring (58).

10. A working method of an automatic unloading device for the production of plastic-coated steel pipes, using the automatic unloading device for the production of plastic-coated steel pipes described in claim 9, characterized in that: Specifically, it includes the following steps: Step 1: The coated steel pipe is conveyed by a conveyor and falls on the inclined plate (1). The sliding plate (42) slides and abuts against the clamping strip (11) through the abutting groove (43) and follows the sliding. The clamping strip (11) drives the abutting plate (3) to slide to block all the coated steel pipes. Then, after the abutting plate (3) moves back to its original position, it drives the clamping plate (7) to move through the sliding rod (12), and the clamping plate (7) blocks the coated steel pipes adjacent to the lowermost coated steel pipe. The lowermost coated steel pipe slides down through the inclined plate (1). Then, through the sequential blocking of multiple groups of clamping plates (7) and abutting plates (3), the kinetic energy of the sliding of the coated steel pipe is reduced. Step 2: By using the connection between the transmission rod (466) and the shaft end of the conveyor, as well as the transmission of the transmission belt (464) and the transmission wheel (465), and the transmission of the worm wheel (463) and the worm (461), the rotating rod (45) drives a plurality of cams (44) to rotate. And due to the staggered arrangement of the cams (44), the clamping plates (7) and the abutting plates (3) of adjacent two groups sequentially block the coated steel pipes. Step 3: When the coated steel pipe slides to the end, the rotating plate (52) blocks it, and thus the coated steel pipe pushes the rotating plate (52) to rotate. The support rod (53) makes the rack (56) slide to compress the compression spring (59) through the meshing of the gear (55) and the rack (56), so as to buffer the coated steel pipe again through the elastic force of the compression spring (59).

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