Pipe end inner hole polishing machine

Abstract

The present invention discloses a pipe end inner hole polishing machine, comprising a base plate (701), wherein the base plate (701) is mounted on the positioning plate (100) by bolts, an axial slide (702) is slidably connected to the base plate (701), a transverse driving unit (703) is mounted on the base plate (701), a movable output end of the transverse driving unit (703) is connected to the outer wall of the axial slide (702), and a radial servo eccentric mechanism is mounted on the axial slide (702). The pipeline port is polished by the radial servo eccentric mechanism, the overall finish is high, the polishing head is easy to replace, the feed parameters are flexibly adjustable, and the applicable pipe diameter range is large, thereby solving the technical problem of automatic compensation for easy wear of the grinding head.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a pipe end inner hole polishing machine. Background Art

[0002] Pipe polishing machine is a device used for surface treatment of pipes. It is widely used for cleaning and polishing of pipes in the petroleum, chemical, pharmaceutical, food, beverage and other industries. Traditional pipe polishing machines usually use abrasives or polishing cloths and other materials to achieve the polishing effect through friction with the pipe surface. In the field of polishing, there are many types of parts to be polished, with various shapes and materials. Among them, for polishing slender pipes, the existing methods generally include electrolytic polishing, centrifugal polishing and magnetic polishing. Mechanical polishing must be performed before electrolytic polishing to remove the oxide scale, and electrolytic polishing has certain requirements for the roughness of the inner wall. Centrifugal polishing and magnetic polishing can only achieve micro-cutting, which is not suitable for polishing slender pipes with large cutting volume and large quantities, and the efficiency is relatively low.

[0003] The authorized patent name is: A smart polishing machine for the inner hole of a slender pipe fitting, and the authorization number is: CN115464541B. It is proposed that the existing soft grinding parts are easily twisted and damaged, and are not suitable for grinding the inner holes of pipe fittings that are too long. At the same time, hard grinding parts are not suitable for curved slender pipe fittings. The soft grinding parts have large rotational resistance and are also easily damaged by twisting. The structural design of the No. 1 fixed pulley and the No. 2 fixed pulley, combined with the traction rope with bristles, realizes the grinding and polishing function of the inner hole of the slender pipe fitting. The polishing machine can grind a longer length of pipe fittings than the length of the pipe fittings that can be polished by the grinding parts extending into the pipe fittings. At the same time, because the soft traction rope is subjected to axial tension, it can adapt to the grinding of the inner holes of curved pipe fittings. Although it can be The inner wall of the pipe is polished by pulling with a soft rope, but the inside of the pipe is annular, and the contact area of ​​the pulled rope with the inner wall of the pipe is small. The position of the rope needs to be constantly adjusted during the polishing process so that the rope contacts different positions of the inner wall of the pipe, so that the inner wall of the pipe can be polished. The adjustment time is too long, and the polishing efficiency is low. In addition, during the mechanical polishing of the pipe port by the existing grinder, the grinding head will wear during the continuous polishing process. When the grinding head is worn, the existing grinding device cannot compensate for the worn position. This results in some pipe ports having incomplete port polishing during the polishing process. For this reason, a pipe end inner hole polishing machine is proposed. Summary of the invention

[0004] The object of the present invention is to provide a pipe end inner hole polishing machine to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a pipe end inner hole polishing machine, comprising a positioning plate, a plurality of fixing clamps are connected to the positioning plate by screws, a pipe body is clamped inside the fixing clamps, and an internal expansion polishing structure is movably connected inside the pipe body;

[0006] The inner expansion polishing structure comprises an outer expansion sac, the outer expansion sac is movably connected to the inside of the tube body, the inside of the outer expansion sac is connected to the inner expansion sac, a plurality of polishing brush rods are integrally formed on the outside of the inner expansion sac, the polishing brush rods penetrate the outer wall of the outer expansion sac, both ends of the inner expansion sac are connected to a first valve body, both ends of the inner expansion sac are fixedly connected to a clamping structure, the outside of one clamping structure is clamped to a positioning structure, the positioning plate (100) is connected to a tube end polishing structure (700), the outside of another clamping structure is connected to a reciprocating motor, the outside of another clamping structure is connected to a second valve body, the air inlet of the second valve body is connected to a hose, and the end of the hose away from the second valve body is connected to an air pump;

[0007] The clamping structure comprises two first connecting tubes (600), the two first connecting tubes (600) are respectively fixedly connected to two ends of the outer expansion bladder (105), the air inlet of the first valve body (112) penetrates the outer wall of the first connecting tube (600), the outer part of the first connecting tube (600) is threadedly connected to the second connecting tube (601), the outer part of the second connecting tube (601) is fixedly connected to a connecting hook (602), the outer part of the output shaft of the reciprocating motor (107) is provided with a connecting hole (603), one of the connecting hooks (602) is clamped to the inside of the connecting hole (603), and the other connecting hook (602) is clamped to the positioning structure;

[0008] The positioning structure comprises a fixing plate (101), the fixing plate (101) being connected to the positioning plate (100) by screw threads, the fixing plate (101) being fixedly connected to a positioning column (102), the outer portion of the positioning column (102) being sleeved with a snap ring (104), the outer portion of the snap ring (104) being fixedly connected to a tension spring (103), the interior of the tension spring (103) being provided with a positioning hole, and the other connecting hook (602) being snap-connected to the positioning hole of the tension spring (103);

[0009] The pipe end grinding structure (700) comprises a base plate (701), wherein the base plate (701) is mounted on the positioning plate (100) by means of bolts, wherein an axial slide (702) is slidably connected to the base plate (701), wherein a transverse driving unit (703) is mounted on the base plate (701), wherein a movable output end of the transverse driving unit (703) is connected to an outer wall of the axial slide (702), wherein a radial servo eccentric mechanism is mounted on the axial slide (702), wherein the radial servo eccentric mechanism comprises a fixed frame and a vertical driving unit (704), wherein the fixed frame is mounted on the axial slide (702), wherein the vertical driving unit (704) is mounted on the fixed frame, and wherein the interior of the fixed frame is provided with a plurality of movable members. A first eccentric wedge block (705) is installed, the movable output end of the vertical drive unit (704) is fixedly connected to the outer wall of the first eccentric wedge block (705), the fixed frame is movably connected to the second eccentric wedge block (706), the side of the second eccentric wedge block (706) away from the first eccentric wedge block (705) is rotatably connected to a push-pull connecting rod (713), the inclined surfaces of the first eccentric wedge block (705) and the second eccentric wedge block (706) are in contact with each other, a swing bearing seat mechanism (707) is installed on the axial slide (702), a swing drive motor (708) is installed on the swing bearing seat mechanism (707), and the output shaft of the swing drive motor (708) The outer walls of the push-pull connecting rod (713) are both equipped with first synchronous wheels, and the two first synchronous wheels are connected through a synchronous belt transmission. The end of the push-pull connecting rod (713) away from the second eccentric wedge block (706) passes through the outer wall of the rocking bearing seat mechanism (707) and is connected to the third wedge block (709). The axial slide (702) is equipped with a movable seat (714), and the movable seat (714) is equipped with a polishing power spindle (711). The output shaft of the polishing power spindle (711) is equipped with a polishing end (716). The end of the polishing power spindle (711) away from the polishing end (716) is equipped with a connecting block (715). The movable seat (714) is fixedly connected with the main A spindle motor (712), the output shaft of the spindle motor (712) and the polishing power spindle (711) are both equipped with a second synchronous wheel on the outside, and the two second synchronous wheels are connected by belt transmission. The outside of the movable seat (714) is connected with a connecting block (715), and the outside of the connecting block (715) is fixedly connected with a fourth wedge block (710), and the outside of the fourth wedge block (710) is integrally formed with a clamping block, and the outside of the third wedge block (709) is integrally formed with a clamping groove, and the clamping block is slidably connected to the inside of the clamping groove. A threaded hole is opened on the outside of the axial slide (702), and one end of the tension spring (103) away from the connecting hook (602) is fixedly connected with a threaded column matching the threaded hole.

[0010] Preferably, a sphere is integrally formed at one end of the polishing brush rod away from the outer expansion bladder.

[0011] Preferably, the air outlet of the first valve body is connected to a shunt pipe, the air outlet of the shunt pipe penetrates the outer wall of the inner expansion bladder, and a plurality of inclined spray holes are opened on the outside of the outer expansion bladder.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, the staff places the tube body inside the clamp to fix it, and places the inner expansion bladder and the outer expansion bladder inside the clamp, and pulls the inner expansion bladder and the outer expansion bladder to move back and forth and rub continuously inside the tube body by connecting a reciprocating motor, so as to cooperate with the polishing brush rod to polish the inner wall of the tube body, and when facing tube bodies of different diameters, the user can inject gas into the outer expansion bladder and the inner expansion bladder through an air pump to expand the outer expansion bladder and the inner expansion bladder, and the expanded outer expansion bladder and the inner expansion bladder can quickly polish the inner walls of tubes of different diameters.

[0014] In the present invention, the expanded outer expansion bladder and the inner expansion bladder cooperate with the polishing brush rod to achieve continuous polishing treatment on the inner wall of the curved pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0016] Figure 2 It is a structural schematic diagram of a pipe end grinding structure in an embodiment of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the pipe end grinding structure and the tension spring in an embodiment of the present invention;

[0018] Figure 4 It is a schematic diagram of the structure of the outer positioning column and the outer expansion bladder in an embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the placement state of the external expansion bladder in an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the expanded state of the external expansion bladder in an embodiment of the present invention;

[0021] Figure 7 It is a schematic diagram of the cross-sectional structure of the external and internal expansion bladder in an embodiment of the present invention;

[0022] Figure 8 It is a schematic diagram of a partial cross-sectional structure of an external expansion bladder according to an embodiment of the present invention;

[0023] Fig. 9 For the embodiment of the present invention Figure 4Schematic diagram of the enlarged structure of area A in .

[0024] In the figure: 100, positioning plate; 101, fixing plate; 102, positioning column; 103, tension spring; 104, clamping ring; 105, outer expansion bladder; 106, fixing clamp; 107, reciprocating motor; 108, air pump; 109, hose; 110, tube body; 111, inner expansion bladder; 112, first valve body; 113, polishing brush rod; 200, ball; 600, first connecting pipe; 601, second connecting pipe; 602, connecting hook; 603, connecting hole; 700, tube end grinding structure; 701, bottom plate ; 702, axial slide; 703, horizontal drive unit; 704, vertical drive unit; 705, first eccentric wedge block; 706, second eccentric wedge block; 707, swing bearing seat mechanism; 708, swing drive motor; 709, third wedge block; 710, fourth wedge block; 711, polishing power spindle; 712, spindle motor; 713, push-pull connecting rod; 714, movable seat; 715, connecting block; 716, polishing end; 800, second valve body; 900, diverter pipe; 901, inclined spray hole. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the present invention, when polishing a curved pipe, the outer expansion bladder 105 can be placed inside the curved pipe, and the outer expansion bladder 105 can be driven to move back and forth inside the curved pipe by connecting the reciprocating motor 107, so that the curved pipe can be polished. At the same time, gas can be injected into the outer expansion bladder 105 and the inner expansion bladder 111 to expand the outer expansion bladder 105 and the inner expansion bladder 111, so that the outer expansion bladder 105 and the inner expansion bladder 111 can fill the inner wall of the pipe, and the inner wall of the pipe can be evenly polished, thereby accelerating the polishing speed.

[0027] Embodiment 1

[0028] like Figure 1-Figure 4 As shown, the pipe end inner hole polishing machine of the present application includes a positioning plate 100, a plurality of fixing clamps 106 are connected to the positioning plate 100 by screws, a pipe body 110 is clamped inside the fixing clamps 106, and an internal expansion polishing structure is movably connected inside the pipe body 110;

[0029] Among them, the internal expansion polishing structure includes an external expansion bladder 105, the external expansion bladder 105 is movably connected to the interior of the tube body 110, the interior of the external expansion bladder 105 is connected to the internal expansion bladder 111, and the outside of the internal expansion bladder 111 is integrally formed with a plurality of polishing brush rods 113, the polishing brush rods 113 penetrate the outer wall of the external expansion bladder 105, both ends of the internal expansion bladder 111 are connected to the first valve body 112, both ends of the internal expansion bladder 111 are fixedly connected with a clamping structure, the outside of one clamping structure is clamped with a positioning structure, the outside of the other clamping structure is connected to a reciprocating motor 107, the outside of the other clamping structure is connected to a second valve body 800, the air inlet of the second valve body 800 is connected to a hose 109, and the end of the hose 109 away from the second valve body 800 is connected to an air pump 108.

[0030] Specifically, during use, multiple fixing clamps 106 are connected to the positioning plate 100 by screw threads, and the tube body 110 is clamped and limited by multiple fixing clamps 106 to ensure the stability of the fixing clamps 106 during the polishing process. During the polishing process, the staff passes the two ends of the outer expansion bladder 105 through the tube body 110 and connects them to the positioning structure and the reciprocating motor 107 respectively through the clamping structure, and starts the reciprocating motor 107 to drive the output shaft to reciprocate. The output shaft of the reciprocating motor 107 will drive the outer expansion bladder 105 and the inner expansion bladder 111 to move back and forth inside the tube body 110 during the reciprocating rotation, thereby polishing the inner wall of the tube body 110.

[0031] Furthermore, during the polishing process, the outer expansion sac 105 and the inner expansion sac 111 may fail to completely fill the inner wall of the pipe. If the pipe is too thick or the extension is too thin, the inner expansion sac 111 and the outer expansion sac 105 with the polishing brush rod 113 may not be able to completely contact the inner wall of the pipe, resulting in uneven polishing. In addition, when the position of the outer expansion sac 105 does not change, some areas may be over-polished while other areas are not adequately treated. In view of the above technical problems, the user can connect the air pipes 109 to the outer expansion sac 105. Pump 108 and the first valve body 112, and by starting the air pump 108, gas is injected into the inner expansion bladder 111. When the gas continues to enter the inner expansion bladder 111, it will cause the inner expansion bladder 111 to expand, thereby driving the outer wall of the outer expansion bladder 105 to extend and expand. When the outer expansion bladder 105 and the inner expansion bladder 111 expand, they will fill the interior of the tube body 110. The filled outer expansion bladder 105 and the inner expansion bladder 111 cooperate with the external multiple inner expansion bladders 111 to grind the inner wall of the pipeline, thereby accelerating the grinding speed and reducing uneven polishing.

[0032] like Figure 1-Figure 8As shown, the clamping structure includes two first connecting tubes 600, which are respectively fixedly connected to the two ends of the outer expansion bladder 105, and the air inlet of the first valve body 112 passes through the outer wall of the first connecting tube 600. The external thread of the first connecting tube 600 is connected to the second connecting tube 601, and the external part of the second connecting tube 601 is fixedly connected to the connecting hook 602. A connecting hole 603 is provided on the external part of the output shaft of the reciprocating motor 107, and one connecting hook 602 is clamped to the inside of the connecting hole 603, and the other connecting hook 602 is clamped to the positioning structure.

[0033] Specifically, in the snap-on structure, the user can threadably connect the first connecting tube 600 at both ends of the outer expansion bladder 105 to the second connecting tube 601. The threaded connection between the first connecting tube 600 and the second connecting tube 601 can not only protect the first valve body 112 inside the first connecting tube 600, but also can respectively connect the reciprocating motor 107 and the positioning structure through the connecting hook 602. A connecting hole 603 is provided on the outside of the output shaft of the reciprocating motor 107, and a connecting hook 602 is snapped into the inside of the connecting hole 603, thereby forming a connection between one end of the outer expansion bladder 105 and the reciprocating motor 107, and the other end of the outer expansion bladder 105 is connected to the positioning structure through the connecting hook 602.

[0034] like Figure 1-Figure 3 As shown, the positioning structure includes a fixing plate 101, which is threadably connected to the positioning plate 100 by screws, a positioning column 102 is fixedly connected to the fixing plate 101, a retaining ring 104 is sleeved on the outside of the positioning column 102, a tension spring 103 is fixedly connected to the outside of the retaining ring 104, a positioning hole is opened inside the tension spring 103, and another connecting hook 602 is clamped in the positioning hole of the tension spring 103.

[0035] Specifically, after the outer expansion sac 105 is connected to the reciprocating motor 107 through a connecting hook 602, the other end of the outer expansion sac 105 needs to be positioned. In the positioning structure, according to the length of the other end of the outer expansion sac 105 extending outside the tube body 110, the fixing plate 101 is installed at a specified position on the positioning plate 100 by bolts. After the fixing plate 101 is installed to the specified position, the clamping ring 104 is sleeved on the outside of the positioning column 102, and a hole identical to the connecting hole 603 is formed on the outside of the tension spring 103, so that The connecting hook 602 at one end of the outer expansion bladder 105 away from the reciprocating motor 107 is snapped into the hole opened on the outside of the tension spring 103, so as to position the other end of the outer expansion bladder 105. The outer expansion bladder 105 is connected to the tension spring 103 via the connecting hook 602 and the tension spring 103 will be deformed when the reciprocating motor 107 pulls the outer expansion bladder 105, and the deformed tension spring 103 will rebound, thereby assisting the outer expansion bladder 105 to move back and forth inside the tube body 110 when the reciprocating motor 107 pulls the outer expansion bladder 105 back and forth.

[0036] During use, burrs will be generated at the fracture of the pipe after processing and cutting. These burrs also need to be polished away during the processing. However, the existing automatic grinder uses a mechanically rotating grinding head for grinding, which will cause wear of the grinding head due to continuous polishing. When the grinding head is worn, eccentricity compensation needs to be performed between the grinding head and the pipe.

[0037] like Figure 6-Figure 9As shown, the pipe end grinding structure 700 includes a base plate 701, the base plate 701 is installed on the positioning plate 100 by bolts, the base plate 701 is slidably connected with an axial slide 702, a transverse driving unit 703 is installed on the base plate 701, the moving output end of the transverse driving unit 703 is connected to the outer wall of the axial slide 702, the axial slide 702 is installed with a radial servo eccentric mechanism, the radial servo eccentric mechanism includes a fixed frame and a vertical driving unit 704, the fixed frame is installed on the axial slide 702, the vertical driving unit 704 is installed on the fixed frame, and the interior of the fixed frame is installed with a first An eccentric wedge block 705, the moving output end of the vertical driving unit 704 is fixedly connected to the outer wall of the first eccentric wedge block 705, the fixed frame is movably connected to the second eccentric wedge block 706, the second eccentric wedge block 706 is rotatably connected to the push-pull connecting rod 713 on the side away from the first eccentric wedge block 705, the inclined surfaces of the first eccentric wedge block 705 and the second eccentric wedge block 706 are in contact with each other, a swing bearing seat mechanism 707 is installed on the axial slide 702, a swing drive motor 708 is installed on the swing bearing seat mechanism 707, and the output shaft of the swing drive motor 708 and the push-pull connecting rod 713 are connected to the push-pull connecting rod 713. The outer wall of the connecting rod 713 is installed with a first synchronous wheel, and the two first synchronous wheels are connected through a synchronous belt transmission. The end of the push-pull connecting rod 713 away from the second eccentric wedge block 706 passes through the outer wall of the swing bearing seat mechanism 707 and is connected to the third wedge block 709. A movable seat 714 is installed on the axial slide 702, and a polishing power spindle 711 is installed on the movable seat 714. The output shaft of the polishing power spindle 711 is installed with a polishing end 716. The end of the polishing power spindle 711 away from the polishing end 716 is installed with a connecting block 715, and the movable seat 714 is fixedly connected with a spindle motor 712, the output shaft of the spindle motor 712 and the polishing power spindle 711 are both equipped with a second synchronous wheel on the outside, and the two second synchronous wheels are connected by belt drive. The outside of the movable seat 714 is connected with a connecting block 715, and the outside of the connecting block 715 is fixedly connected with a fourth wedge block 710, and the outside of the fourth wedge block 710 is integrally formed with a card block, and the outside of the third wedge block 709 is integrally formed with a card slot, and the card block is slidably connected to the inside of the card slot, and a threaded hole is opened on the outside of the axial slide 702, and the end of the tension spring 103 away from the connecting hook 602 is fixedly connected with a threaded column matching the threaded hole.

[0038] Specifically, during use, when it is necessary to grind the pipe fracture, the staff can start the horizontal drive unit 703, which is composed of a ball screw and a motor. During the start-up process of the horizontal drive unit 703, the axial slide 702 can be driven by the ball screw to move forward and backward on the bottom plate 701. When the horizontal drive unit 703 drives the axial slide 702 to move forward and backward, the push-pull grinding end 716 can be extended into the end of the pipe. When the grinding end 716 is moved to the end of the pipe, the vertical drive unit 703 is started. The start of the motor unit 704 and the vertical drive unit 704 will drive the first eccentric wedge block 705 to move up and down. When the first eccentric wedge block 705 moves up and down, it can squeeze the second eccentric wedge block 706 in contact with the inclined surface of the first eccentric wedge block 705, thereby squeezing the second eccentric wedge block 706 to drive the second eccentric wedge block 706 to move. When the second eccentric wedge block 706 is squeezed by the first eccentric wedge block 705 and moves backward, the driving force is transmitted to the third wedge block 706 through the push-pull connecting rod 713. 9, thereby driving the third wedge block 709 to move. When the third wedge block 709 is squeezed and displaced, the swing drive motor 708 can also be started to cooperate with the two first synchronous wheels and the synchronous belt to drive the push-pull connecting rod 713 and the third wedge block 709 to rotate. When the third wedge block 709 rotates, it will drive the fourth wedge block 710 to rotate together. The fourth wedge block 710 is connected to the connecting block 715, so that during the rotation of the fourth wedge block 710, it will drive the fourth wedge block 710 to rotate and continue to shake. When the shaking is transmitted to the movable seat 714, it will drive the movable seat 714 and the polishing power spindle 711 on the movable seat 714 to produce a circular trajectory swinging circle shaking. The movable seat 714 produces a circular shaking and drives the push-pull connecting rod 713 extending into the pipe port to shake in a circular manner, thereby performing a circular grinding on the inner wall position of the pipe port. At the same time, the spindle motor 712 can be started to drive the two second synchronous wheels and the polishing power spindle 711 to rotate, thereby driving the push-pull connecting rod 713 to rotate during the circular shaking process, thereby accelerating the grinding speed.

[0039] Furthermore, during use, a threaded hole can be opened on the outside of the axial slide 702 to cooperate with a threaded column fixedly connected to one end of the tension spring 103 away from the connecting hook 602, so as to connect the tension spring 103 to the axial slide 702, thereby replacing the positioning column 102.

[0040] In the present application, the connection between multiple structures is used to realize automatic adjustment of the eccentricity, so as to meet the polishing effect of continuous processing, and when the grinding head is used, the eccentricity compensation of the grinding head is realized as a whole.

[0041] Furthermore, the grinding end 716 is installed on the output shaft of the polishing power main shaft 711, and the grinding end 716 of different sizes can be replaced according to needs to achieve the grinding effect on different pipe diameters.

[0042] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to the prior art, in the present embodiment, when it is necessary to polish the curved pipe, the outer expansion bladder 105 can be pulled back and forth inside the pipe body 110 by the reciprocating motor 107 in cooperation with the connecting hook 602 and the first connecting tube 600. When the outer expansion bladder 105 moves back and forth, the polishing brush rod 113 passing through the outside of the outer expansion bladder 105 can continuously rub and polish the inner wall of the pipe. At the same time, the reciprocating motor 107 can cooperate with the first valve body 112 to inject gas into the inner expansion bladder 111 and the outer expansion bladder 105, so that the outer expansion bladder 105 and the inner expansion bladder 111 expand, thereby filling the inner wall of the pipe body 110, expanding the contact area with the pipe, and evenly polishing the inner wall of the pipe, thereby accelerating the polishing speed.

[0043] Embodiment 2

[0044] Considering that when the outer expansion bladder 105 expands under the drive of the inner expansion bladder 111, the positions of the multiple polishing brush rods 113 outside the outer expansion bladder 105 will change as the outer expansion bladder 105 expands. As the outer expansion bladder 105 continues to expand, the distance between the multiple polishing brush rods 113 will gradually increase. This change leads to a decrease in the density of the polishing brush rods 113 at the same position. The reduced density may weaken the polishing force of the polishing brush rods 113 on the inside of the pipe. In response to the above problems, the present application proposes the following technical solutions:

[0045] like Figure 5 and Fig. 9 As shown, a sphere 200 is integrally formed at one end of the polishing brush rod 113 away from the outer expansion bladder 105 .

[0046] Specifically, when the outer expansion sac 105 expands with the drive of the inner expansion sac 111 and the spacing between the multiple polishing brush rods 113 increases, the reciprocating motor 107 pulls the outer expansion sac 105 and the inner expansion sac 111 to move back and forth in a lateral manner, and the individual polishing brush rods 113 move back and forth with the outer expansion sac 105 and the inner expansion sac 111 in a limited range, and the ball 200 is located at the end of the polishing brush rod 113 away from the inner wall of the pipe, and when the outer expansion sac 105 is pulled back and forth driven by the reciprocating motor 107, the ball 200 will drive the polishing brush rod 113 to increase the shaking amplitude, and the ball 200 0 and the polishing brush rod 113 are both made of metal. The mass of the sphere 200 is heavier. When subjected to a pulling force, the swaying amplitude is larger, which drives the polishing brush rod 113 to increase the swaying amplitude. The swaying amplitude of the polishing brush rod 113 is larger, thereby increasing the number of contacts and contact surfaces with the inner wall of the pipe, thereby strengthening the polishing force on the inside of the pipe. The inner walls of the outer expansion bladder 105 and the inner expansion bladder 111 are both made of wear-resistant elastic materials and have a certain supporting force. The mass of the sphere 200 is heavier, which will drive the polishing brush rod 113 to sag, thereby ensuring that the polishing brush rod 113 is in a vertical state outside the inner expansion bladder 111 and the outer expansion bladder 105.

[0047] The technical solution in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: relative to the first embodiment, in the present embodiment, through the setting of the sphere 200, under the coordinated action of the outer expansion bladder 105 and the inner expansion bladder 111, the polishing brush rod 113 can effectively perform back and forth friction polishing on the inside of the pipe through the drive of the reciprocating motor 107. Due to the influence of gravity, the sphere 200 generates inertia, which further drives the polishing brush rod 113 to swing in a larger range. This increased swing amplitude effectively increases the contact area between the polishing brush rod 113 and the inner wall of the pipe, thereby significantly improving the polishing force of a single polishing brush rod 113. The polishing process is optimized and the polishing effect is improved.

[0048] like Figure 5 As shown, the air outlet of the first valve body 112 is connected to a shunt pipe 900 , and the air outlet of the shunt pipe 900 passes through the outer wall of the inner expansion bladder 111 . A plurality of inclined spray holes 901 are provided on the outside of the outer expansion bladder 105 .

[0049] Specifically, during use, the gas can be diverted to the diversion tube 900 through the first valve body 112, so that gas can also enter the outer expansion bladder 105, so that when the inner expansion bladder 111 expands, the outer expansion bladder 105 also expands, and when the inner expansion bladder 111 is vented through the first valve body 112 at the other end, the gas in the inner expansion bladder 111 is quickly discharged. At this time, the gas filled into the outer expansion bladder 105 will be discharged by the inclined spray hole 901, and the inclined spray hole 901 is inclined to discharge the gas, thereby blowing away the dirt attached to the surface of the outer expansion bladder 105.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipe end inner hole polishing machine, comprising a positioning plate (100), characterized in that: The positioning plate (100) is connected to a plurality of fixing clamps (106) via screws, the interior of the fixing clamps (106) is clamped with a tube body (110), and the interior of the tube body (110) is movably connected to an internal expansion polishing structure; The internal expansion polishing structure comprises an external expansion sac (105), the external expansion sac (105) is movably connected to the inside of the tube (110), the inside of the external expansion sac (105) is connected to the internal expansion sac (111), the outside of the internal expansion sac (111) is integrally formed with a plurality of polishing brush rods (113), the polishing brush rods (113) penetrate the outer wall of the external expansion sac (105), and both ends of the internal expansion sac (111) are connected to the first valve body (112). Both ends of the inner expansion bladder (111) are fixedly connected with a clamping structure, the outside of one clamping structure is clamped with a positioning structure, the positioning plate (100) is connected with a pipe end grinding structure (700), the outside of the other clamping structure is connected with a reciprocating motor (107), the outside of the other clamping structure is connected with a second valve body (800), the air inlet of the second valve body (800) is connected with a hose (109), and the end of the hose (109) away from the second valve body (800) is connected with an air pump (108); The clamping structure comprises two first connecting tubes (600), the two first connecting tubes (600) are respectively fixedly connected to two ends of the outer expansion bladder (105), the air inlet of the first valve body (112) penetrates the outer wall of the first connecting tube (600), the outer part of the first connecting tube (600) is threadedly connected to the second connecting tube (601), the outer part of the second connecting tube (601) is fixedly connected to a connecting hook (602), the outer part of the output shaft of the reciprocating motor (107) is provided with a connecting hole (603), one of the connecting hooks (602) is clamped to the inside of the connecting hole (603), and the other connecting hook (602) is clamped to the positioning structure; The positioning structure comprises a fixing plate (101), the fixing plate (101) being connected to the positioning plate (100) by screw threads, the fixing plate (101) being fixedly connected to a positioning column (102), the outer portion of the positioning column (102) being sleeved with a snap ring (104), the outer portion of the snap ring (104) being fixedly connected to a tension spring (103), the interior of the tension spring (103) being provided with a positioning hole, and the other connecting hook (602) being snap-connected to the positioning hole of the tension spring (103); The pipe end grinding structure (700) comprises a base plate (701), wherein the base plate (701) is mounted on the positioning plate (100) by means of bolts, wherein an axial slide (702) is slidably connected to the base plate (701), wherein a transverse driving unit (703) is mounted on the base plate (701), wherein a movable output end of the transverse driving unit (703) is connected to an outer wall of the axial slide (702), wherein a radial servo eccentric mechanism is mounted on the axial slide (702), wherein the radial servo eccentric mechanism comprises a fixed frame and a vertical driving unit (704), wherein the fixed frame is mounted on the axial slide (702), wherein the vertical driving unit (704) is mounted on the fixed frame, and wherein the interior of the fixed frame is provided with a plurality of movable members. A first eccentric wedge block (705) is installed, the movable output end of the vertical drive unit (704) is fixedly connected to the outer wall of the first eccentric wedge block (705), the fixed frame is movably connected to the second eccentric wedge block (706), the side of the second eccentric wedge block (706) away from the first eccentric wedge block (705) is rotatably connected to a push-pull connecting rod (713), the inclined surfaces of the first eccentric wedge block (705) and the second eccentric wedge block (706) are in contact with each other, a swing bearing seat mechanism (707) is installed on the axial slide (702), a swing drive motor (708) is installed on the swing bearing seat mechanism (707), and the output shaft of the swing drive motor (708) The outer walls of the push-pull connecting rod (713) are both equipped with first synchronous wheels, and the two first synchronous wheels are connected through a synchronous belt transmission. The end of the push-pull connecting rod (713) away from the second eccentric wedge block (706) passes through the outer wall of the rocking bearing seat mechanism (707) and is connected to the third wedge block (709). The axial slide (702) is equipped with a movable seat (714), and the movable seat (714) is equipped with a polishing power spindle (711). The output shaft of the polishing power spindle (711) is equipped with a polishing end (716). The end of the polishing power spindle (711) away from the polishing end (716) is equipped with a connecting block (715). The movable seat (714) is fixedly connected with the main A spindle motor (712), the output shaft of the spindle motor (712) and the polishing power spindle (711) are both equipped with a second synchronous wheel on the outside, and the two second synchronous wheels are connected by belt transmission. The outside of the movable seat (714) is connected with a connecting block (715), and the outside of the connecting block (715) is fixedly connected with a fourth wedge block (710), and the outside of the fourth wedge block (710) is integrally formed with a clamping block, and the outside of the third wedge block (709) is integrally formed with a clamping groove, and the clamping block is slidably connected to the inside of the clamping groove. A threaded hole is opened on the outside of the axial slide (702), and one end of the tension spring (103) away from the connecting hook (602) is fixedly connected with a threaded column matching the threaded hole.

2. The pipe end inner hole polishing machine according to claim 1, characterized in that: A sphere (200) is integrally formed on one end of the polishing brush rod (113) away from the outer expansion bladder (105).

3. The pipe end inner hole polishing machine according to claim 1, characterized in that: The air outlet of the first valve body (112) is connected to a shunt pipe (900), the air outlet of the shunt pipe (900) penetrates the outer wall of the inner expansion bladder (111), and a plurality of inclined spray holes (901) are provided on the outside of the outer expansion bladder (105).

Images