Seamless steel tube pre-positioning punching equipment

Abstract

The utility model relates to a seamless steel pipe pre-positioning punching device, which relates to the technical field of steel pipe processing, and comprises a base station, a clamping assembly and a punching assembly, the tapping assembly comprises a supporting plate arranged on the side face of the supporting arm in a sliding mode, a drilling body fixedly arranged on the supporting plate and a driving piece used for driving the upper portion of the supporting plate to move. The clamping assembly comprises lower clamping strips symmetrically arranged on the base table, upper clamping strips located above the lower clamping strips and a lifting air cylinder driving the upper clamping strips to move up and down. A plurality of lower clamping grooves are formed in the lower clamping strip in the length direction of the lower clamping strip, the inner diameters of the lower clamping grooves are gradually decreased step by step, and upper clamping grooves corresponding to the lower clamping grooves are formed in the upper clamping strip; the lower clamping strip and the upper clamping strip can be adjusted and fixed in the length direction of the lower clamping strip and the upper clamping strip. According to the steel pipe positioning and punching device, the possibility of clamping looseness when steel pipes of different specifications are machined through the same positioning and punching device is reduced, and the punching precision and the quality of steel pipe finished products are improved.

Description

Technical Field

[0001] This application relates to the technical field of steel pipe processing, and in particular to a pre-positioning and drilling device for seamless steel pipes. Background Technology

[0002] Seamless steel pipes, as a core material in many industries such as petroleum, chemical, natural gas transportation, building structures, and machinery manufacturing, have their processing quality and efficiency directly affecting product performance and production benefits. In the production process of seamless steel pipes, precisely drilling holes at specific locations is a crucial step, which has spurred the research and application of pre-positioned drilling equipment. This type of equipment not only needs to meet the requirements of high-precision drilling but also needs to adapt to the processing requirements of steel pipes of different specifications to ensure the flexibility and efficiency of the production line.

[0003] Currently, a steel pipe processing equipment integrating clamping and drilling exists on the market. This equipment achieves the clamping and precise drilling of steel pipes through the coordinated work of a base, clamping components (including a lower clamp, an upper clamp, and a lifting cylinder), and drilling components (including a support arm, a lifting frame, a drive unit, and a drilling machine). The operation process is roughly as follows: the steel pipe is placed in the arc-shaped clamping grooves of the upper and lower clamps; then, the upper clamp moves downward under the drive of the lifting cylinder, securing the steel pipe; subsequently, the drilling machine descends vertically along the lifting frame under the drive of the drive unit, drilling holes in the steel pipe using its drill rod.

[0004] However, faced with the increasingly diverse market demands for steel pipe specifications, this traditional design has gradually revealed its limitations. In particular, when dealing with non-standard or special-sized steel pipes, the original upper and lower clamps may not be securely clamped due to size mismatch, which in turn causes shaking during drilling, seriously affecting the drilling accuracy and the quality of the finished steel pipe, indicating room for improvement. Utility Model Content

[0005] The purpose of this application is to provide a pre-positioning drilling device for seamless steel pipes, which solves the problem in the above-mentioned related technologies that when processing non-standard or special-sized steel pipes, the original upper and lower clamps may not be securely clamped due to size mismatch, thus affecting the drilling accuracy.

[0006] The seamless steel pipe pre-positioning and drilling equipment provided in this application adopts the following technical solution:

[0007] A pre-positioning drilling device for seamless steel pipes includes a base, a clamping assembly, and a drilling assembly. A support arm is fixedly mounted on the base. The drilling assembly includes a support plate slidably mounted on the side of the support arm, a drilling body fixedly mounted on the support plate, and a driving component for moving the support plate upwards. The clamping assembly includes lower clamping bars symmetrically mounted on the base, an upper clamping bar located above the lower clamping bars, and a lifting cylinder for moving the upper clamping bars up and down. The lower clamping bars have a plurality of lower clamping grooves along their length, with the inner diameter of the grooves decreasing progressively. The upper clamping bars have upper clamping grooves corresponding to the lower clamping grooves. Both the lower and upper clamping bars can be adjusted and fixed along their length.

[0008] By adopting the above technical solution, when drilling holes in steel pipes, the installation positions of the upper and lower clamping bars are adjusted according to the actual size of the steel pipe, and the upper and lower clamping grooves of appropriate size are selected to clamp the steel pipe. Then, the drilling assembly is used to drill holes in the clamped steel pipe. This reduces the possibility of loosening when steel pipes of different specifications are processed using the same positioning drilling equipment, and improves the drilling accuracy and the quality of the finished steel pipe.

[0009] Optionally, guide protrusions are fixed on opposite sides of the lower clamping bar, and two parallel limiting protrusions are symmetrically fixed on the base. Guide grooves for the guide protrusions to be inserted and slid on the sides of the two limiting protrusions that are close to each other are provided. Several positioning threaded grooves are provided on the guide protrusions, and positioning through holes that can coincide with the positioning threaded grooves are provided on the limiting protrusions. Positioning screws that penetrate the positioning through holes and are screwed into the positioning threaded grooves are provided on the base.

[0010] By adopting the above technical solution, when adjusting the installation position of the lower clamping bar, the lower clamping bar is slid along the length direction of the limiting protrusion, and then the positioning screw is screwed into the corresponding positioning thread groove after passing through the positioning through hole, thereby realizing the adjustment and locking of the position of the lower clamping bar.

[0011] Optionally, a vertical plate for supporting the lifting cylinder is fixed on the base, the main body of the lifting cylinder is fixed on the side of the vertical plate, a connecting block is fixed at the end of the telescopic rod of the lifting cylinder, and positioning plates are fixed on the opposite two sides of the connecting block; a plurality of locking thread grooves are opened on the upper clamping bar, a locking through hole that can coincide with the locking thread groove is opened on the positioning plate, and a locking screw that passes through the locking through hole and is screwed into the locking thread groove is provided on the base.

[0012] By adopting the above technical solution, when adjusting the installation state of the upper clamping bar, first adjust the position of the upper clamping bar relative to the connecting block until the locking through hole coincides with the corresponding locking thread groove, and then use the locking screw to tighten it, thereby realizing the position adjustment of the upper clamping bar relative to the lifting cylinder.

[0013] Optionally, a dovetail slider is fixed on the connecting block, and a dovetail groove is provided on the side of the upper clamping bar away from the base for the dovetail slider to be inserted and slid.

[0014] By adopting the above technical solution, when adjusting the installation state of the upper clamping bar, the upper clamping bar slides along the length direction of the dovetail slide groove due to the cooperative arrangement of the dovetail slider and the dovetail slide groove, thereby improving the stability of the upper clamping bar during the sliding adjustment process.

[0015] Optionally, the side of the dovetail slider is provided with an elastic snap-fit ​​component, and the bottom side of the dovetail groove is provided with a positioning groove corresponding to the locking thread groove.

[0016] By adopting the above technical solution, when the positioning protrusion is inserted into the positioning groove, a locking sensation will be generated, which is used to remind that the locking through hole coincides with the locking thread groove at this position, so as to facilitate the adjustment and fixation of the upper clamping strip.

[0017] Optionally, elastic pads are fixed on the inner walls of both the upper and lower clamping grooves.

[0018] By adopting the above technical solutions, the possibility of the steel pipe loosening when clamped is reduced, and the stability of the steel pipe when clamped is improved.

[0019] Optionally, a plurality of positioning blocks are fixed on the inner walls of the upper and lower clamping grooves, and the elastic pad is provided with positioning grooves for the positioning blocks to be embedded.

[0020] By adopting the above technical solution, during the installation of the elastic pad, the positioning block is embedded into the positioning groove on the elastic pad, thereby realizing the installation and fixation of the elastic pad, and also facilitating the replacement of the elastic pad after it wears out.

[0021] Optionally, the elastic pad is provided with a plurality of anti-slip protrusions.

[0022] By adopting the above technical solutions, the stability of the steel pipe when it is clamped can be further improved.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When drilling holes in steel pipes, adjust the installation positions of the upper and lower clamping bars according to the actual size of the steel pipe, select appropriate upper and lower clamping slots to clamp the steel pipe, and then use the drilling assembly to drill holes in the clamped steel pipe. This reduces the possibility of loosening when steel pipes of different specifications are processed using the same positioning drilling equipment, and improves the drilling accuracy and the quality of the finished steel pipe. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is a schematic diagram illustrating the installation and mating of the opening assembly in an embodiment of this application;

[0028] Figure 3 This is a partial cross-sectional view of the installation and fit of the upper clamping strip in an embodiment of this application;

[0029] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0030] Figure 5 yes Figure 3 Enlarged schematic diagram of part B;

[0031] Figure 6 This is a partial cross-sectional view of the installation and fit of the clamping strip in an embodiment of this application.

[0032] In the diagram, 1. Base; 11. Support arm; 12. Vertical plate; 13. Limiting protrusion; 131. Guide groove; 132. Positioning through hole; 2. Clamping assembly; 21. Lower clamping bar; 211. Lower clamping groove; 212. Positioning block; 213. Guide protrusion; 2131. Positioning threaded groove; 22. Upper clamping bar; 221. Upper clamping groove; 222. Locking threaded groove; 223. Dovetail slide; 2231. Positioning groove; 23. Lifting cylinder; 24. Connecting block 241. Positioning plate; 2411. Locking through hole; 242. Dovetail slider; 2421. Placement groove; 25. Locking screw; 26. Elastic snap-fit ​​component; 261. Compression spring; 262. Arc-shaped protrusion; 27. Positioning screw; 3. Hole opening assembly; 31. Support plate; 3111. Adjusting screw hole; 32. Drilling body; 33. Driving component; 331. Drive motor; 332. Drive screw; 4. Elastic pad; 41. Anti-slip protrusion; 42. Positioning groove. Detailed Implementation

[0033] The present application will be further described in detail below with reference to all the accompanying drawings.

[0034] Example

[0035] Reference Figure 1 and Figure 2A pre-positioning drilling device for seamless steel pipes includes a base 1, a clamping assembly 2, and a drilling assembly 3. A support arm 11 is fixed on the base 1. The drilling assembly 3 includes a support plate 31 slidably disposed on the side of the support arm 11, a drilling body 32 fixed on the support plate 31, and a driving component 33 for driving the support plate 31 to move upward.

[0036] The clamping assembly 2 includes a lower clamping bar 21 symmetrically arranged on the base 1, an upper clamping bar 22 located above the lower clamping bar 21, and a lifting cylinder 23 that drives the upper clamping bar 22 to move up and down. The lower clamping bar 21 has three lower clamping grooves 211 along its own length direction, and the inner diameter of the three lower clamping grooves 211 decreases step by step. The upper clamping bar 22 has an upper clamping groove 221 corresponding to the lower clamping grooves 211. Both the lower clamping bar 21 and the upper clamping bar 22 can be adjusted and fixed along their own length direction.

[0037] When drilling holes in a steel pipe, the installation positions of the upper clamping bar 22 and the lower clamping bar 21 are adjusted according to the actual size of the steel pipe. The upper clamping groove 221 and the lower clamping groove 211 of appropriate size are selected to clamp the steel pipe. Then, the drilling assembly 3 is used to drill holes in the clamped steel pipe.

[0038] Reference Figure 2 The driving component 33 includes a drive motor 331 fixedly mounted vertically on the side of the support arm 11, and a drive screw 332 fixedly connected coaxially to the output shaft of the drive motor 331. The support plate 31 has an adjusting screw hole 3111 through which the drive screw 332 passes and is threadedly engaged. The drilling body 32 is a conventional drilling machine fixed on the support plate 31, which will not be described in detail here. Through the cooperation of the drive motor 331 and the drive screw 332, the support plate 31 and the drilling body 32 are driven to move up and down reciprocally.

[0039] Reference Figure 2 and Figure 3 A vertical plate 12 for supporting the lifting cylinder 23 is fixed on the base 1. The main body of the lifting cylinder 23 is fixed on the side of the vertical plate 12. A connecting block 24 is fixed at the end of the telescopic rod of the lifting cylinder 23. A positioning plate 241 is fixed on the opposite two sides of the connecting block 24. A plurality of locking thread grooves 222 are opened on the upper clamping bar 22. A locking through hole 2411 that can coincide with the locking thread groove 222 is opened on the positioning plate 241. A locking screw 25 is provided on the base 1 that passes through the locking through hole 2411 and is screwed into the locking thread groove 222.

[0040] A dovetail slider 242 is fixed on the connecting block 24, and a dovetail groove 223 is provided on the side of the upper clamping bar away from the base 1 for the dovetail slider 242 to be inserted and slid. When adjusting the installation state of the upper clamping bar 22, the upper clamping bar 22 slides along the length direction of the dovetail groove 223 until the locking through hole 2411 coincides with the corresponding locking thread groove 222, and then the locking screw 25 is used to tighten it, thereby realizing the position adjustment of the upper clamping bar 22 relative to the lifting cylinder 23.

[0041] Reference Figure 3 and Figure 4 The side of the dovetail slider 242 is provided with an elastic snap-fit ​​member 26, wherein the elastic snap-fit ​​member 26 includes a compression spring 261 and an arc-shaped protrusion 262. The dovetail slide groove 223 is provided with a placement groove 2421 for the compression spring 261 and the arc-shaped protrusion 262 to be placed. The compression spring 261 squeezes the arc-shaped protrusion 262 and causes a part of the arc-shaped protrusion 262 to protrude out of the placement groove 2421. The outer side of the protruding part is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

[0042] The bottom side of the dovetail slide 223 has three positioning grooves 2231 corresponding to the locking thread groove 222; the engagement sensation when the positioning protrusion is inserted into the positioning groove 2231 serves as a reminder that the locking through hole 2411 coincides with the locking thread groove 222 at this position, which facilitates the adjustment and fixation of the upper clamping bar 22.

[0043] Reference Figure 3 and Figure 5 Both the upper clamping groove 221 and the lower clamping groove 211 have rubber elastic pads 4 fixedly installed on their inner walls. The elastic pads 4 have several anti-slip protrusions 41 integrally formed on them to improve the stability of the steel pipe when it is clamped. Both the upper clamping groove 221 and the lower clamping groove 211 have several positioning blocks 212 fixedly installed on their inner walls. The elastic pads 4 have positioning grooves 42 for the positioning blocks 212 to be inserted into, so as to realize the installation and fixation of the elastic pads 4 and facilitate the replacement of the elastic pads 4 after they are worn.

[0044] Reference Figure 6 Guide protrusions 213 are fixed on opposite sides of the lower clamping strip 21. Two parallel limiting protrusions 13 are symmetrically fixed on the base 1. Guide grooves 131 are provided on the sides of the two limiting protrusions 13 that are close to each other, allowing the guide protrusions 213 to be inserted and slide.

[0045] The guide ridge 213 has three positioning threaded grooves 2131, and the limiting ridge 13 has a positioning through hole 132 that can coincide with the positioning threaded groove 2131. The base 1 has a positioning screw 27 that passes through the positioning through hole 132 and is screwed into the positioning threaded groove 2131. When the installation position of the lower clamping strip 21 is adjusted, the lower clamping strip 21 is slid along the length direction of the limiting ridge 13 and then tightened by the positioning screw 27, thereby realizing the adjustment and locking of the position of the lower clamping strip 21.

[0046] The implementation principle of this application embodiment is as follows:

[0047] When drilling holes in a steel pipe, the installation positions of the upper clamping bar 22 and the lower clamping bar 21 are adjusted according to the actual size of the steel pipe. The upper clamping groove 221 and the lower clamping groove 211 of appropriate size are selected to clamp the steel pipe, so that the elastic pad 4 on the inner wall of the upper clamping groove 221 and the lower clamping groove 211 abuts against the outer circumference of the steel pipe. Then, the hole drilling is performed on the clamped steel pipe through the hole drilling assembly 3.

[0048] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "one," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0049] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pre-positioning drilling device for seamless steel pipes, comprising a base (1), a clamping assembly (2) and a drilling assembly (3), wherein a support arm (11) is fixedly mounted on the base (1), and the drilling assembly (3) comprises a support plate (31) slidably mounted on the side of the support arm (11), a drilling body (32) fixedly mounted on the support plate (31), and a driving component (33) for moving the support plate (31) upward. Its features are, The clamping assembly (2) includes a lower clamping bar (21) symmetrically arranged on the base (1), an upper clamping bar (22) located above the lower clamping bar (21), and a lifting cylinder (23) that drives the upper clamping bar (22) to move up and down; the lower clamping bar (21) has a plurality of lower clamping grooves (211) along its own length direction, and the inner diameter of the plurality of lower clamping grooves (211) decreases step by step; the upper clamping bar (22) has an upper clamping groove (221) corresponding to the lower clamping grooves (211); both the lower clamping bar (21) and the upper clamping bar (22) can be adjusted and fixed along their own length direction.

2. The seamless steel pipe pre-positioning and drilling equipment according to claim 1, characterized in that, Guide protrusions (213) are fixed on opposite sides of the lower clamping bar (21), and two parallel limiting protrusions (13) are symmetrically fixed on the base (1). Guide grooves (131) for the guide protrusions (213) to be inserted and slid on the sides of the two limiting protrusions (13) that are close to each other are provided. The guide protrusion (213) is provided with a plurality of positioning threaded grooves (2131), the limiting protrusion (13) is provided with a positioning through hole (132) that can coincide with the positioning threaded groove (2131), and the base (1) is provided with a positioning screw (27) that passes through the positioning through hole (132) and is screwed into the positioning threaded groove (2131).

3. The seamless steel pipe pre-positioning and drilling equipment according to claim 1, characterized in that, A vertical plate (12) for supporting the lifting cylinder (23) is fixed on the base (1). The main body of the lifting cylinder (23) is fixed on the side of the vertical plate (12). A connecting block (24) is fixed at the end of the telescopic rod of the lifting cylinder (23). A positioning plate (241) is fixed on the opposite two sides of the connecting block (24). The upper clamping bar (22) is provided with a plurality of locking thread grooves (222), the positioning plate (241) is provided with locking through holes (2411) that can coincide with the locking thread grooves (222), and the base (1) is provided with locking screws (25) that penetrate the locking through holes (2411) and are screwed into the locking thread grooves (222).

4. The seamless steel pipe pre-positioning and drilling equipment according to claim 3, characterized in that, The connecting block (24) is fixed with a dovetail slider (242), and the upper clamping bar (22) is provided with a dovetail groove (223) on the side away from the base (1) for the dovetail slider (242) to be inserted and slid.

5. The seamless steel pipe pre-positioning and drilling equipment according to claim 4, characterized in that, The side of the dovetail slider (242) is provided with an elastic snap-fit ​​member (26), and the bottom side of the dovetail groove (223) is provided with a positioning groove (2231) corresponding to the locking thread groove (222).

6. The seamless steel pipe pre-positioning and drilling equipment according to claim 1, characterized in that, Elastic pads (4) are fixed on the inner walls of the upper clamping groove (221) and the lower clamping groove (211).

7. The seamless steel pipe pre-positioning and drilling equipment according to claim 6, characterized in that, Several positioning blocks (212) are fixed on the inner walls of the upper clamping groove (221) and the lower clamping groove (211), and the elastic pad (4) is provided with positioning grooves (42) for the positioning blocks (212) to be embedded.

8. A seamless steel pipe pre-positioning and drilling device according to claim 6, characterized in that, The elastic pad (4) is fixed with several anti-slip protrusions (41).

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