Seamless tube machining hot necking device

Abstract

The application relates to the field of seamless pipe processing equipment, in particular to a hot necking device for seamless pipe processing, which comprises a bottom plate, a jack, a sliding plate, a supporting piece, a clamping assembly, a spray gun and a necking die, and an external gas source is connected to the spray gun; the clamping assembly comprises a mounting seat provided with a mounting groove in the upper portion and fixedly arranged on the plate surface of the movable plate, a limiting plate arranged in the mounting groove, two sliding blocks symmetrically arranged on the opposite sides of the limiting plate and arranged in the mounting groove, two inner thread cylinders coaxially arranged and fixedly arranged in the sliding blocks, a driving screw threadedly connected in the inner thread cylinders and with two ends respectively located outside the two sliding blocks, and a clamping block fixedly arranged on the top of the sliding block; the screw rotation directions of the two inner thread cylinders are opposite, so that the efficiency of necking work on a large number of seamless pipes is improved.

Description

Technical Field

[0001] This application relates to the field of seamless tube processing equipment, and in particular to a heat shrinking device for seamless tube processing. Background Technology

[0002] Currently, seamless steel pipe is a long strip of steel with a hollow cross-section and no seams around its perimeter, widely used in fluid transportation, structural component manufacturing, and other fields. Depending on the production method, seamless steel pipe is classified into hot-rolled, cold-rolled, cold-drawn, extruded, and jacking pipe processes. The raw materials are mostly steel ingots or solid tube blanks, which are manufactured through piercing, three-roll skew rolling, or continuous rolling processes.

[0003] The existing method for narrowing the end of a seamless tube involves first heating the end with a flame until it becomes red-hot, then striking it with a hammer while continuously rotating the seamless tube to reduce the radial diameter of the end and perform some shaping to achieve the required narrowed diameter.

[0004] The existing technical solutions described above have the following drawbacks: When using the above method to perform necking processing on seamless tubes, workers are prone to fatigue from repeatedly hammering a large number of seamless tubes, resulting in low work efficiency and making it unsuitable for performing necking work on a large number of seamless tubes at once. Utility Model Content

[0005] This application provides a heat shrinking device for seamless tube processing to improve the efficiency of performing shrinking work on a large number of seamless tubes.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A heat shrinking device for seamless tube processing includes a base plate, a jack fixed at one end on the surface of the base plate, a sliding plate slidably mounted on the base plate and fixedly connected to the other end of the jack, a plurality of support members fixedly mounted on the surface of the sliding plate and spaced apart, a clamping assembly fixedly mounted on the surface of the sliding plate and located between two adjacent support members, a spray gun fixedly mounted on a section above the base plate away from the jack and spaced apart from the sliding plate, and a shrinking mold fixedly mounted on the end of the base plate away from the jack, wherein the spray gun is connected to an external air source;

[0008] The clamping assembly includes a mounting base with an upper mounting groove and fixedly mounted on the surface of a movable plate, a limiting plate disposed in the mounting groove, two sliders slidably disposed inside the mounting groove and symmetrically distributed on opposite sides of the limiting plate, two internally threaded cylinders fixedly disposed in the sliders and arranged coaxially, a drive screw threadedly connected to the internally threaded cylinders and with its two ends located outside the two sliders respectively, and a clamping block fixedly disposed on the top of the sliders, wherein the threads of the two internally threaded cylinders rotate in opposite directions.

[0009] By adopting the above technical solution, after the seamless tube is placed on the support, the clamping assembly is used in conjunction with the support to clamp and fix the seamless tube. After starting the jack to drive the sliding plate and starting the spray gun to heat the end of the seamless tube at high temperature, the jack is started again to insert the end of the seamless tube into the shrinking mold, thereby completing the heat shrinking process of the seamless tube. The heat shrinking device can perform batch heat shrinking processing on a large number of seamless tubes, thereby improving the work efficiency of centralized heat shrinking processing of a large number of seamless tubes.

[0010] Optionally, the clamping block has a right-angled clamping opening and the two clamping openings are arranged opposite each other.

[0011] By adopting the above technical solution, the right-angled clamping port can more conveniently clamp seamless pipes, and at the same time, it can stably clamp seamless pipes of different diameters, thus improving the applicability of the clamping block.

[0012] Optionally, an anti-slip pad is fixed inside the clamping port.

[0013] By adopting the above technical solution, when the clamping block clamps the seamless tube, the anti-slip pad can effectively increase the static friction between the two, thereby improving the clamping stability of the seamless tube when the jack pushes the seamless tube into the shrinking mold.

[0014] Optionally, the support component includes a support rod fixed at the lower end to the surface of the sliding plate, a support plate fixed at the upper end of the support rod and in the shape of a U, and an extension plate disposed at the U-shaped opening of the support plate and located outside the U-shaped opening.

[0015] By adopting the above technical solution, the support rod can not only fix the support plate in place, but also effectively increase the height of the support plate. After the seamless tube is placed into the support plate and clamped by the clamping block, the seamless tube is placed in a horizontal position. The extension plate can increase the opening width of the support plate, thereby facilitating the placement of the seamless tube into the opening of the support plate.

[0016] Optionally, a strip-shaped support block is fixedly installed on the bottom plate, and the end of the jack is fixedly installed on the side wall of the support block facing the constriction mold, and the lower plate of the sliding plate slides against the support block.

[0017] By adopting the above technical solution, the support block can provide a larger installation space for the jack while also supporting the movable plate.

[0018] Optionally, the bottom plate has a groove on the end face away from the constriction mold. The length direction of the groove is parallel to the length direction of the jack and is arranged at intervals with the jack. The end face of the groove is trapezoidal and the width of the groove opening is smaller than the width of its bottom.

[0019] A pad is fixedly installed on the lower surface of the sliding plate. Sliding blocks are fixedly installed at intervals at the bottom of the pad. The height of the pad is the same as the height of the support block. The sliding blocks are adapted to the slide groove and are slidably installed in the slide groove, and the sliding plate is in a horizontal state.

[0020] By adopting the above technical solution, the pad can keep the movable plate in a horizontal state.

[0021] Optionally, the nozzle reduction device also includes a mounting shell fixedly mounted on the base plate. The mounting shell is spaced apart from the sliding plate, and a notch is provided on the side of the mounting shell facing the movable plate. The spray gun is disposed inside the mounting shell.

[0022] By adopting the above technical solution, during the process of heating the seamless tube with the spray gun, the mounting shell can separate the spray gun and the seamless tube from the external working environment, thereby improving the safety of the heat shrinking process.

[0023] Optionally, an observation window is fixedly provided on the mounting housing.

[0024] By adopting the above technical solution, the heating status of the seamless tube end can be directly observed through the observation window.

[0025] In summary, this application has the following technical effects:

[0026] 1. By setting up a base plate, jack, sliding plate, support component, clamping assembly, spray gun, and shrinking mold, the seamless tube is placed on the support component, and the clamping assembly works with the support component to clamp and fix the seamless tube. The jack is started to drive the sliding plate and the spray gun is started to heat the end of the seamless tube at high temperature. The jack is started again to insert the end of the seamless tube into the shrinking mold, thereby completing the heat shrinking treatment of the seamless tube. The heat shrinking device can perform batch heat shrinking processing on a large number of seamless tubes, thereby improving the work efficiency of centralized heat shrinking processing of a large number of seamless tubes.

[0027] 2. By setting a right-angled clamping port, it is easier to clamp seamless tubes, and the clamping port can stably clamp seamless tubes of different diameters, thus improving the applicability of the clamping block.

[0028] 3. By setting up anti-slip pads, the static friction between the two can be effectively increased, thereby improving the clamping stability of the seamless tube when it is pushed into the shrinking mold by the jack. Attached Figure Description

[0029] Figure 1 This is a structural diagram of the object of this application;

[0030] Figure 2 This is a structural diagram from another angle of this application;

[0031] Figure 3 It is a structural diagram of the locking block, support block, pad block, and sliding block;

[0032] Figure 4 This is an exploded view of the clamping component;

[0033] Figure 5 This is a cross-sectional structural diagram of the mounting shell.

[0034] Explanation of reference numerals in the attached drawings: 1. Base plate; 11. Slide groove; 12. Clamping block; 13. Support block; 2. Jack; 3. Sliding plate; 31. Pad block; 32. Sliding block; 4. Support component; 41. Support rod; 42. Support plate; 43. Extension plate; 5. Clamping assembly; 51. Mounting base; 511. Mounting groove; 52. Limiting plate; 521. Protruding edge; 522. Limiting opening; 53. Slider; 54. Internal threaded cylinder; 541. Retaining ring; 55. Drive screw; 551. Limiting ring; 56. Clamping block; 561. Clamping opening; 57. Anti-slip pad; 58. Handle; 6. Mounting shell; 61. Notch; 62. Observation window; 7. Spray gun; 8. Shrinking mold. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] This application discloses a heat shrinking device for seamless tube processing, combined with... Figure 1 and Figure 2 The device includes a horizontally arranged, strip-shaped base plate 1; a jack 2 fixed at one end to the upper surface of the base plate 1 and coinciding with the centerline of the base plate 1 along its length; a sliding plate 3 slidably mounted on the base plate 1 and fixed to the other end of the jack 2; multiple support members 4 fixedly mounted on the upper surface of the sliding plate 3 and spaced at equal intervals; a clamping assembly 5 fixedly mounted on the upper surface of the sliding plate 3 and located between two adjacent support members 4; a mounting shell 6 fixedly mounted on the upper surface of the base plate 1 at a distance away from the jack 2 and spaced apart from the sliding plate 3; a spray gun 7 disposed inside the mounting shell 6 for heating the end of the seamless tube; and a necking mold 8 fixedly mounted on the lower end of the base plate 1 away from the jack 2 and located inside the mounting shell 6. An external air source is connected to the spray gun 7.

[0037] After the seamless tube is placed on the support 4, it is clamped and fixed by the clamping assembly 5. Then, the jack 2 is started to drive the sliding plate 3, so that the seamless tube extends into the mounting shell 6. After the spray gun 7 is started to heat the end of the seamless tube at high temperature, the jack 2 is started again to insert the end of the seamless tube into the shrinking mold 8, so that the seamless tube can be heat-shrinked. The heat-shrinking device can be used to process a large number of seamless tubes in batches, thereby improving the efficiency of centralized heat-shrinking processing of a large number of seamless tubes.

[0038] Combination Figure 1and Figure 3 The upper surface of the base plate 1 has two spaced-apart grooves 11 on its end face away from the constriction mold 8. The length direction of the grooves 11 is parallel to the length direction of the jack 2. The two grooves 11 are symmetrically distributed on both sides of the jack 2 and spaced apart from it. The end face of the groove 11 is trapezoidal and the width of the groove opening is smaller than the width of its bottom. A trapezoidal locking block 12 is provided in the groove 11 and is adapted to the groove opening. A bolt passes through the lower surface of the base plate 1 and is threaded to the locking block 12, fixing the locking block 12 in the groove 11 near the lower end of the jack 2. A strip-shaped support block 13 is integrally formed on the upper part of the locking block 12. The end of the jack 2 is fixedly set on the side wall of the support block 13 facing the mounting shell 6. The lower surface of the sliding plate 3 slides against the support block 13.

[0039] Combination Figure 2 and Figure 3 A pad 31 is integrally formed on the lower surface of the sliding plate 3, away from the support block 13. Two sliding blocks 32 are fixedly arranged at intervals on the bottom of the pad 31. The height of the pad 31 is the same as the height of the support block 13, thereby keeping the movable plate in a horizontal state. The sliding blocks 32 are trapezoidal in shape and are slidably disposed within the slide groove 11. When the sliding blocks 32 are slidably disposed within the slide groove 11 and the lower surface of the sliding plate 3 is in contact with the upper surface of the support block 13, the surface of the sliding plate 3 is horizontal and parallel to the surface of the base plate 1.

[0040] Reference Figure 3 The support member 4 includes a vertically arranged support rod 41 with its lower end fixed to the upper surface of the sliding plate 3, a U-shaped support plate 42 fixedly arranged on the upper end of the support rod 41, and an extension plate 43 integrally formed at the U-shaped opening of the support plate 42 and located outside the U-shaped opening. At least two support rods 41 are spaced apart, and the line connecting the support rods 41 is perpendicular to the length direction of the jack 2. The support plate 42 is fixed to the upper end of the support rod 41 and suspended above the sliding plate 3, with the U-shaped opening of the support plate 42 facing away from the sliding plate 3. Two extension plates 43 are provided and located on opposite sides of the support plate 42, effectively increasing the width of the U-shaped opening of the support plate 42, facilitating the insertion of seamless pipes into the opening.

[0041] Combination Figure 3 and Figure 4The clamping assembly 5 includes a mounting base 51 fixedly mounted on the upper surface of the sliding plate 3, a limiting plate 52 extending upward from the bottom of the mounting base 51 into the mounting base 51, two sliders 53 slidably mounted inside the mounting base 51 and symmetrically distributed on opposite sides of the limiting plate 52, internally threaded cylinders 54 respectively fixedly mounted inside the two sliders 53 and arranged coaxially, a drive screw 55 threadedly connected to the two internally threaded cylinders 54 and with both ends located outside the two sliders 53, two clamping blocks 56 respectively fixedly mounted on the top of the sliders 53, two anti-slip pads 57 respectively fixedly connected to the opposite sides of the two clamping blocks 56, and a handle 58 fixedly mounted on one end of the drive screw 55.

[0042] The bottom of the mounting base 51 is threaded upwards from the lower surface of the movable plate to the movable plate via bolts. The top of the mounting base 51 has a mounting groove 511, the end face of which is trapezoidal and the groove width is less than the bottom width. The bottom of the limiting plate 52 is integrally formed with a raised edge 521. The bottom of the mounting base 51 has a countersunk hole that matches the raised edge 521. After the raised edge 521 is inserted into the countersunk hole, it is fixedly connected to the bottom of the mounting base 51 via bolts. The top of the limiting plate 52, away from the raised edge 521, has a limiting opening 522 located within the mounting groove 511. The drive screw 55 is rotated within the limiting opening 522. The slider 53 is shaped to fit the mounting groove 511 and slides within it. The end of the internally threaded cylinder 54 is integrally formed with a retaining ring 541, which fits against the outer wall of the slider 53. The two internally threaded cylinders 54 have opposite rotation directions. The drive screw 55 has two threads with opposite directions, which are threaded to two internally threaded cylinders 54 respectively. Two spaced-apart limiting rings 551 are integrally formed in the middle of the drive screw 55. The drive screw 55 is engaged within the limiting opening 522 and positioned between the two limiting rings 551, with the two limiting rings 551 respectively abutting the opposite sides of the limiting plate 52. The clamping block 56 has right-angled clamping openings 561, with two clamping openings 561 arranged opposite each other. The orientation of the clamping openings 561 coincides with the axis of the drive screw 55. When the seamless tube is placed in the opening of the support plate 42, the two sliders 53 move closer together, clamping the seamless tube within the clamping openings 561. An anti-slip pad 57 is attached and fixed to the clamping openings 561. The handle 58 is rod-shaped, with one end fixed to the end of the drive screw 55 and the other end inclined away from the drive screw 55. There are three handles 58, which are evenly distributed at equal angles on the end of the drive screw 55.

[0043] Reference Figure 5The outer wall of the mounting shell 6 facing the movable plate has a notch 61 for the end of the seamless tube to enter the shell. An observation window 62 is installed on the side wall of the mounting shell 6 facing the length direction of the base plate 1. The observation window 62 is made of transparent and high temperature resistant materials, such as high temperature resistant glass, polycarbonate, and addition-cured silicone rubber. The heating status of the end of the seamless tube can be directly observed through the observation window 62.

[0044] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A heat shrinking device for seamless tube processing, characterized in that: The device includes a base plate (1), a jack (2) fixed at one end on the upper surface of the base plate (1), a sliding plate (3) slidably mounted on the base plate (1) and fixed to the other end of the jack (2), a plurality of support members (4) fixedly mounted on the upper surface of the sliding plate (3) and spaced apart, a clamping assembly (5) fixedly mounted on the upper surface of the sliding plate (3) and located between two adjacent support members (4), a spray gun (7) fixedly mounted on the upper part of the base plate (1) away from the jack (2) and spaced apart from the sliding plate (3), and a narrowing mold (8) fixedly mounted on the lower end of the base plate (1) away from the jack (2). The spray gun (7) is connected to an external air source. The clamping assembly (5) includes a mounting base (51) with an upper mounting groove (511) and fixedly mounted on the surface of the movable plate, a limiting plate (52) disposed in the mounting groove (511), two sliders (53) slidably disposed inside the mounting groove (511) and symmetrically distributed on opposite sides of the limiting plate (52), two internal threaded cylinders (54) fixedly disposed in the sliders (53) and arranged coaxially, a drive screw (55) threadedly connected to the internal threaded cylinders (54) and with its two ends located outside the two sliders (53) respectively, and a clamping block (56) fixedly disposed on the top of the sliders (53). The threads of the two internal threaded cylinders (54) are opposite in direction.

2. The heat shrinking device for seamless tube processing according to claim 1, characterized in that: The clamping block (56) has a right-angled clamping opening (561) and the two clamping openings (561) are arranged opposite to each other.

3. The heat shrinking device for seamless tube processing according to claim 2, characterized in that: An anti-slip pad (57) is fixedly attached inside the clamping port (561).

4. A heat shrinking device for seamless tube processing according to any one of claims 1-3, characterized in that: The support member (4) includes a support rod (41) whose lower end is fixed to the upper surface of the sliding plate (3), a support plate (42) fixedly installed on the upper end of the support rod (41) and in the shape of a U, and an extension plate (43) installed at the U-shaped opening of the support plate (42) and located outside the U-shaped opening.

5. A heat shrinking device for seamless tube processing according to claim 4, characterized in that: The upper surface of the base plate (1) is fixedly provided with a strip-shaped support block (13), the end of the jack (2) is fixedly provided on the side wall of the support block (13) facing the constriction mold (8), and the lower surface of the sliding plate (3) slides against the support block (13).

6. The heat shrinking device for seamless tube processing according to claim 5, characterized in that: The upper surface of the base plate (1) is provided with a groove (11) on the end face away from the constriction mold (8). The length direction of the groove (11) is parallel to the length direction of the jack (2) and is arranged at intervals with the jack (2). The end face of the groove (11) is trapezoidal and the width of the groove opening is smaller than the width of its bottom. A pad (31) is fixedly installed on the lower plate surface of the sliding plate (3). A sliding block (32) is fixedly installed at intervals at the bottom of the pad (31). The height of the pad (31) is the same as the height of the support block (13). The sliding block (32) is adapted to the slide groove (11) and is slidably installed in the slide groove (11) and the sliding plate (3) is in a horizontal state.

7. The heat shrinking device for seamless tube processing according to claim 1, characterized in that: The necking device also includes a mounting shell (6) fixedly mounted on the base plate (1). The mounting shell (6) is spaced apart from the sliding plate (3). The mounting shell (6) has a notch (61) on the side facing the movable plate. The spray gun (7) is located inside the mounting shell (6).

8. A heat shrinking device for seamless tube processing according to claim 7, characterized in that: An observation window (62) is fixedly provided on the mounting shell (6).

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