Flange opening device

Abstract

The present invention relates to the field of drilling machines, and specifically to a flange hole-making device, comprising a base, on which two support plates for supporting a flange are symmetrically arranged, and each support plate is provided with a plurality of clearance holes for drill rods to pass through; hole-making units are provided on both sides of the base; the drill rods to be drilled are divided into two groups, and each group of drill rods is installed in an end shell, so that there is enough space in the end shell to install a driving power source for driving the drill rods to rotate, and at the same time, there is enough space between each group of drill rods to install drill rods of different sizes and specifications, and in the process of drilling the drill rods, the debris generated will not touch the two drill rods at the same time, so as to avoid the debris being entangled on the two drill rods and affecting the stable operation of the drill rods; furthermore, the two groups of drill rods synchronously drill holes in the flange, which can double the efficiency of the flange hole-making processing.

Description

Technical Field

[0001] The invention relates to the field of drilling machines, in particular to a flange hole opening device. Background Art

[0002] The flange as a whole is usually disc-shaped, and multiple fixing holes are opened at the eccentric position of the flange through a hole-opening device. The number of flange holes is a more specific technical issue, which is usually closely related to factors such as the flange type, size, usage scenario, and standard specifications. For example, in terms of flange type, flat welding flanges usually have fewer holes, generally with 4 fixing holes; butt welding flanges have relatively more holes, generally with 8 fixing holes; for example, in terms of usage scenarios, if it needs to withstand high pressure, the flange can generally have up to 12 or 16 fixing holes.

[0003] When machining multiple fixing holes on a flange, there are two ways: one is to machine the fixing holes one by one, and the other is to machine multiple fixing holes at one time. The former is to machine the fixing holes one by one, which is obviously less efficient, while the latter is to machine multiple fixing holes at one time. However, due to the constraints of the overall size of the flange and the volume of the hole-making equipment, that is, the spacing between the drill rods is limited, only half of the total number of fixing holes can be machined at one time, and it is not possible to machine all the fixing holes at one time. There is still room for improvement in machining efficiency.

[0004] Therefore, a flange opening device is proposed to address the above problems. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: a flange hole opening device according to the present invention comprises a base, two support plates for supporting the flange are symmetrically arranged on the base, and each support plate is provided with a plurality of clearance holes for the drill rod to pass through;

[0007] A hole-opening unit is provided on both sides of the base, and the hole-opening unit includes a slide plate, each of which is slidably connected to an end shell, and a plurality of drill rods are evenly arranged on the end surface of the end shell opposite to the support plate, and the end of each drill rod passes through the end shell and is connected to a motor in the end shell that drives the drill rod to rotate, and the drill rods on the two end shells are staggered; the position of the clearance hole on the support plate matches the position of the drill rod; the motor drives the drill rod to rotate, and the end shell drives the drill rod to slide along the direction of the slide plate, and the drill rod passes through the clearance hole to drill the flange.

[0008] Preferably, the bottom of each support plate is slidably connected to the base;

[0009] A pre-stressing assembly is provided on the side wall of each end shell opposite to the support plate. The pre-stressing assembly includes an elastic telescopic rod fixedly connected to the end shell, and a pressure plate is fixedly connected to the end of the elastic telescopic rod. A plurality of No. 1 holes for the drill rod to pass through are provided on the pressure plate.

[0010] Preferably, a placement groove is provided in the middle position of the two support plates, the placement groove passes through the top of the support plate upward, and a support assembly with a support flange is provided between the two placement grooves, and the support assembly includes a support block, a rotating hole is provided at the center position of the support block, a rotating groove is provided inside the support block, the rotating groove and the rotating hole are coaxially arranged, a swivel is provided in the rotating hole and the rotating groove, a plurality of convex portions are provided on the outer ring of the swivel, and a hexagonal groove is provided at the end of the swivel;

[0011] The outer ring of the support block is evenly provided with a plurality of arc-shaped top plates, the inner side wall of the top plate is fixedly connected with a sliding rod, the end of the sliding rod passes through the rotating groove, and the rotating body is rotated, the convex part pushes the sliding rod, and the top plate squeezes the inner ring of the flange.

[0012] Preferably, the outer rings of both ends of the support block are provided with multiple bayonet holes, and both ends of the support block are provided with extension bodies, multiple blocks that match the bayonet holes are set at the eccentric position of one end of the extension body, and a clamping rod that matches the groove is set at the center position of one end of the extension body.

[0013] Preferably, each of the support plates is provided with a plurality of threaded top screws; and a No. 2 hole for the top screws to pass through is provided on the pressing plate.

[0014] Preferably, a notch is formed at the end of each slide rod, and a rubber block is provided at the end of each convex portion. The rubber block is embedded in the notch, and the convex portion is pressed against the end of the slide rod.

[0015] Preferably, each of the pressure plates is provided with a cooling assembly, the cooling assembly includes a liquid inlet pipe arranged on both sides of the end shell, the end of the liquid inlet pipe extends to the pressure plate, and the end of the liquid inlet pipe is provided with a trigger mechanism for controlling the flow of coolant, and the trigger mechanism is connected to a liquid outlet pipe, the end of the liquid outlet pipe extends to above the support plate, and the discharge direction of the liquid outlet pipe points to the flange.

[0016] Preferably, the number of the bases is two, the two bases are connected together by a connecting rod, and the two bases are slidably connected to a guide rail provided at the bottom thereof;

[0017] Both sides of the guide rail are also provided with chamfering units, which are used to process chamfers at the flange opening positions.

[0018] Preferably, a limiting plate is symmetrically provided on the outer ring of the other end of each extension body; a base block is provided at the bottom of the placement groove, a limiting groove is opened on the upper surface of the base block, the extension body is installed in the placement groove, and the limiting plate is embedded in the limiting groove.

[0019] Preferably, a guide rod is provided on the same side of the two bases; a guide groove is provided on the side wall of the slide plate opposite to the base, and the guide rod is embedded in the guide groove and slides.

[0020] The present invention is beneficial in that:

[0021] 1. In the present invention, the flange hole-opening device is designed to divide the drill rods for opening holes into two groups. Each group of drill rods is installed in the end shell, so that there is enough space in the end shell to install a driving power source for driving the drill rods to rotate. At the same time, there is enough space between each group of drill rods to install drill rods of different sizes. In addition, during the drilling process of the drill rods, the debris generated will not touch the two drill rods at the same time, so as to avoid the debris being entangled on the two drill rods and affecting the stable operation of the drill rods. Furthermore, the fixing holes on the flange are also set at different sizes. The drill rods of one group can be replaced with smaller diameter drill rods, and the drill rods of the other group can be replaced with larger diameter drill rods. It can be flexibly applied to the hole-opening processing of flanges of various specifications.

[0022] 2. In the present invention, a chamfering unit is provided in conjunction with a hole-opening unit, which can be used to chamfer the opened fixed holes. At the same time, chamfering and hole-opening do not interfere with each other and can be operated in parallel. In addition, chamfering, unloading and loading operations can be performed during the hole-opening time period, thereby further improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the flange opening device of the present invention;

[0024] Figure 2 A top view of the flange opening device of the present invention;

[0025] Figure 3 A three-dimensional diagram of the cooperation between the guide rail and the base in the present invention;

[0026] Figure 4 It is a three-dimensional diagram of the cooperation between two adjacent bases in the present invention;

[0027] Figure 5 A top view of the cooperation between two adjacent bases in the present invention;

[0028] Figure 6 This is a first perspective perspective view of the support plate of the present invention;

[0029] Figure 7 A second perspective view of the support plate of the present invention;

[0030] Figure 8 Schematic diagram of the distribution of the clearance holes on two adjacent support plates in the present invention;

[0031] Figure 9 This is a three-dimensional diagram of the hole opening unit and the chamfering unit in the present invention;

[0032] Figure 10 A three-dimensional diagram of the opening unit in the present invention;

[0033] Figure 11 A perspective view of the pressure plate of the present invention;

[0034] Figure 12 is a cross-sectional view of the trigger mechanism of the present invention;

[0035] Figure 13 A three-dimensional diagram of the flange and the support assembly in the present invention;

[0036] Figure 14 is a three-dimensional diagram of the support assembly of the present invention;

[0037] Figure 15 is a three-dimensional diagram of the support block in the present invention;

[0038] Figure 16 for Figure 15 Cross-sectional view in the AA direction;

[0039] Figure 17 is a cross-sectional view of the support block of the present invention;

[0040] Figure 18 It is a three-dimensional diagram of the extension body in the present invention.

[0041] In the figure: 101, flange; 1, base; 2, support plate; 3, clearance hole; 4, slide plate; 5, end shell; 6, drill rod; 7, elastic telescopic rod; 8, pressure plate; 9, No. 1 hole; 10, placement groove; 11, support block; 12, rotation hole; 13, rotation groove; 14, swivel; 15, protrusion; 16, groove; 17, slide bar; 18, bayonet; 19, extension body; 20, clamping block; 21, clamping bar; 22, top screw; 23, Hole No. 2; 24. Notch; 25. Rubber block; 26. Liquid inlet pipe; 27. Trigger mechanism; 28. Liquid outlet pipe; 29. ​​Base shell; 30. Trigger button; 31. Compression spring; 32. Hole No. 3; 33. Connecting rod; 34. Guide rail; 35. Screw rod; 36. Chamfering unit; 37. Limit plate; 38. Base block; 39. Limit groove; 40. Guide rod; 41. Guide groove; 42. Top plate; 43. Slider; 44. Rubber plate. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0043] In order to solve the technical problems raised by the background technology and improve the drilling efficiency of the flange 101, an embodiment of the present invention provides a flange hole opening device, referring to Figures 1-10The flange hole opening device includes a base 1, on which two support plates 2 for erecting a flange 101 are symmetrically arranged, and each support plate 2 is provided with a plurality of clearance holes 3 for the drill rod 6 to pass through; a hole opening unit is provided on both sides of the base 1, and the hole opening unit includes a slide plate 4, each slide plate 4 is slidably connected to an end shell 5, and a plurality of drill rods 6 are evenly arranged on the end surface of the end shell 5 opposite to the support plate 2, and the end of each drill rod 6 passes through the end shell 5 and is connected to a motor in the end shell 5 that drives the drill rod 6 to rotate, and the drill rods 6 on the two end shells 5 are staggered; the position of the clearance hole 3 on the support plate 2 matches the position of the drill rod 6; the motor drives the drill rod 6 to rotate, and the end shell 5 drives the drill rod 6 to slide along the direction of the slide plate 4, and the drill rod 6 passes through the clearance hole 3 to drill the flange 101;

[0044] In this embodiment, specifically, the servo motor combined with the PLC control end housing 5 can drive the drill rod 6 to slide along the slide plate 4 in a speed, direction, and progress, thereby achieving the advancement and retreat of the drill rod 6; two support plates 2 are mounted on the base 1, and the flange 101 to be processed is placed between the two support plates 2;

[0045] Specifically, the specific operation process of drilling a hole in the flange 101 using the flange drilling device is as follows:

[0046] Step S1: Loading: Place the flange 101 between the two support plates 2 and place the flange 101 in a vertical position;

[0047] Step S2 of drilling holes: synchronously drive the two hydraulic cylinders, and the two hydraulic cylinders respectively push the end shells 5 connected thereto to move toward the support plate 2, while the motors in the two end shells 5 drive the drill rods 6 connected thereto to rotate at high speed; the total number of drill rods 6 provided on the two end shells 5 is the number of holes to be drilled on the flange 101, that is, the drill rods 6 that can drill holes on the flange 101 at one time are evenly divided on the two end shells 5 on both sides of the flange 101, and holes are drilled synchronously from both sides of the flange 101, while the drill rods 6 on the two end shells 5 are staggered, so that each drill rod 6 drills a hole on the flange 101, ensuring that the drill rods 6 can machine uniform fixing holes on the flange 101; the drill rods 6 on both sides of the flange 101 rotate at high speed while penetrating the makeshift holes 3 on the support plate 2 and drilling fixing holes on the flange 101;

[0048] Step S3: Unloading: Synchronously drive the two hydraulic cylinders to move the rear side of the end shell 5 away from the flange 101, and then remove the processed flange 101;

[0049] Then, the above steps S1 of loading, S2 of drilling, and S3 of unloading are repeated to perform continuous drilling.

[0050] The flange hole opening device divides the drill rods 6 for opening holes into two groups, and each group of drill rods 6 is installed in the end shell 5, so that there is enough space in the end shell 5 to install a driving power source for driving the drill rods 6 to rotate. At the same time, there is enough space between each group of drill rods 6 to install drill rods 6 of different sizes. For example, the flange 101 to be processed can be a butt-welding flange, the outer ring diameter of the butt-welding flange is 280MM or 285MM, the center circle diameter of the fixing holes thereon is 240MM, and the diameter of each fixing hole is 23MM. The position of the clearance hole 3 on the support plate 2 matches the position of the drill rod 6, and the inner ring diameter of each clearance hole 3 is controlled at 25MM. At the same time, the position of each drill rod 6 on the end shell 5 matches the position of the fixing hole to be processed on the butt-welding flange, and the outer ring diameter of each drill rod 6 is controlled to be less than 25MM, and at the same time matches the diameter of each fixing hole;

[0051] The drill rods 6 are distributed on the two end shells 3, and there is enough space between adjacent drill rods. During the drilling process of the drill rods 6, the debris generated will not touch the two adjacent drill rods 6 at the same time, so as to avoid the debris being entangled on the two adjacent drill rods 6 and affecting the stable operation of the drill rods 6; furthermore, the fixing holes on the flange 101 are also set at different sizes. One group of drill rods 6 can be replaced with a smaller diameter drill rod 6, and the other group of drill rods 6 can be replaced with a larger diameter drill rod 6, which can be flexibly applied to the drilling processing of flanges 101 of various specifications; to replace the drill rods 6, the end shells 3 are opened, the fastening bolts fixing the drill rods 6 are loosened, and then the drill rods 6 are replaced one by one. The drill rods 6 usually do not need to be replaced. Generally, flanges 101 of the same specification are processed in batches, and the drill rods 6 are replaced when the material of the flange 101 is replaced.

[0052] Reference Figures 1-10 , further, the bottom of each support plate 2 is slidably connected to the base 1;

[0053] Furthermore, a pre-pressing assembly is provided on the side wall of each end shell 5 opposite to the support plate 2. The pre-pressing assembly includes an elastic telescopic rod 7 fixed to the end shell 5. The end of the elastic telescopic rod 7 is fixed to a pressure plate 8. The pressure plate 8 is provided with a plurality of No. 1 holes 9 for the drill rod 6 to pass through.

[0054] A slider 43 is provided on the lower surface of each support plate 2. The slider 43 is slidably connected to the slide groove provided on the upper surface of the base 1 by a spring. The elastic force of the spring can separate two adjacent support plates 2 to make space for convenient loading and unloading of the flange 101.

[0055] In the initial state, the space between the two adjacent support plates 2 is large enough and the flange 101 can be placed smoothly. Some flanges 101 are thicker. When loading, the flange 101 can be clamped by the support plate 2 and placed in a vertical state. However, some flanges 101 are thinner. When loading, the support plate 2 cannot clamp the flange 101, and the flange 101 is also difficult to be placed in a vertical state. When the drill rod 6 contacts the inclined flange 101, the hole position will deviate, affecting the hole quality of the flange 101. For this reason, a pre-pressing component is provided to pre-press the thinner flange 101 The flange 101 is clamped between the two support plates 2 in a vertical state, and the specific operation of the pre-pressing assembly is as follows: after loading, the hydraulic cylinder drives the end shell 5 to move toward the support plate 2, and the support plate 2 drives the elastic telescopic rod 7 to move toward the support plate 2. At the same time, the elastic telescopic rod 7 drives the pressing plate 8 to press on the support plate 2. The two adjacent support plates 2 are close to each other along the base 1 and clamp the flange 101. Then the hydraulic cylinder pushes the end shell 5 to move, and the drill rod 6 passes through the No. 1 hole 9 and the makeshift hole 3 in sequence and touches the surface of the flange 101. Then the high-speed rotating drill rod 6 opens a fixing hole on the flange 101.

[0056] After the drilling is completed, the end shell 5 retreats away from the support plate 2. At this time, the drill rod 6 first separates from the flange 101, and then the pressure plate 8 separates from the support plate 2 to ensure that the flange 101 is still squeezed and clamped by the support plate 2 when the drill rod 6 retreats. If the pressure plate 8 separates from the support plate 2 first, the flange 101 will tilt, and the drill rod 6 will mill the fixing hole again, resulting in a failure in the fixing hole processing.

[0057] The setting of the prestressing component is used to clamp and stabilize the flange 101, ensuring smooth drilling of the flange 101 and the quality of the fixed hole processed; not only that, the prestressing component can also cooperate with two groups of drill rods 6 of different specifications. The drill rods 6 of different specifications not only have different diameters, but also different overall lengths. Usually, the drill rods 6 with smaller diameters are also relatively smaller in length. If one group uses a drill rod 6 with a smaller diameter, the movement stroke of the drill rod 6 with smaller diameter touching the flange 101 is greater than the movement stroke of the drill rod 6 with larger diameter touching the flange 101. The two groups of drill rods 6 fail to touch the flange 101 synchronously, which will inevitably cause the flange 101 to tilt. The prestressing component can avoid the above problem, clamp the flange 101, and ensure that the flange 101 can be stably in a vertical state.

[0058] Reference Figure 4-Figure 8 ,as well as Figures 13-18A placement groove 10 is provided in the middle of the two support plates 2, and the placement groove 10 passes through the top of the support plate 2 upward, and a support assembly of a support flange 101 is provided between the two placement grooves 10, and the support assembly includes a support block 11, a rotation hole 12 is provided at the center of the support block 11, a rotation groove 13 is provided inside the support block 11, and the rotation groove 13 is coaxially arranged with the rotation hole 12, a swivel 14 is provided in the rotation hole 12 and the rotation groove 13, a plurality of protrusions 15 are provided on the outer ring of the swivel 14, and a hexagonal groove 16 is provided at the end of the swivel 14;

[0059] The outer ring of the support block 11 is evenly provided with a plurality of arc-shaped top plates 42. The inner side wall of the top plate 42 is fixedly connected with a slide rod 17. The end of the slide rod 17 passes through the rotation groove 13. When the rotating body 14 is rotated, the protrusion 15 pushes the slide rod 17 outward, and the top plate 42 squeezes the inner ring of the flange 101.

[0060] The diameter of the flange 101 is available in various specifications. In order to ensure that the fixing holes are evenly distributed on the flange 101, a support assembly is provided to centrally mount the flange 101 on the support plate 2 so that the axis of the flange 101 coincides with the axis of the circle formed by a group of drill rods 6.

[0061] The specific operation of the support assembly is as follows: place the support assembly at the center of the flange 101, and then rotate the swivel 14. The swivel 14 drives the protrusion 15 to deflect, and the protrusion 15 pushes the slide rod 17. The slide rod 17 pushes the top plate 42 against the inner ring surface of the center of the flange 101. At this time, the axis of the support block 11 coincides with the axis of the flange 101, and the bottom of the placement groove 10 is semicircular, and its axis coincides with the axis of the circle surrounded by a group of drill rods 6. The end of the support block 11 is located in the placement groove 10. At this time, the axis of the support block 11, the axis of the placement groove 10 and the axis of the circle surrounded by the drill rods 6 coincide, and the drill rods 6 can be used to process uniform fixing holes on the flange 101.

[0062] In addition, the support assembly is also helpful for the loading process of the flange 101. The support assembly is pre-installed at the center of the flange 101 on one side of the flange opening device and prepared in advance. When loading, the support assembly and the flange 101 are directly placed between two adjacent support plates 2. The flange 101 can be quickly placed vertically through the support block 11, and there is no need to repeatedly adjust the state of the flange 101, thereby improving the loading efficiency.

[0063] Considering the stability and adaptability of the support assembly when assembled on the flange 101, a replaceable rubber plate 44 can be provided on the surface of the top plate 42, such as Figure 17As shown, the rubber sheet 44 is mounted on the outer surface of the top plate 42 and secured by bolts installed on the inner curved surface of the top plate 42. The bolts penetrate the top plate 42 and secure the rubber sheet 44, ensuring the smoothness of the outer curved surface of the rubber sheet 44 and increasing the friction between the inner ring of the flange 101 and the support assembly, thereby achieving a good fixing effect. To accommodate flanges 101 with different inner ring sizes, the thickness of the rubber sheet 44 is adjusted at different locations to adjust the arc curvature of the outer wall of the rubber sheet 44. This ensures that the arc curvature of the outer wall of the rubber sheet 44 is the same as the curvature of the inner ring of the flange 101, thereby ensuring that the rubber sheet 44 and the flange 101 are fixed through surface-to-surface contact, ensuring the fixing effect of the flange 101.

[0064] Reference Figure 6-Figure 8 ,as well as Figures 13-18 The outer rings of both ends of the support block 11 are provided with multiple bayonet holes 18, and both ends of the support block 11 are provided with extension bodies 19. One end of the extension body 19 is provided with multiple clamping blocks 20 adapted to the bayonet holes 18 at an eccentric position, and one end of the extension body 19 is provided with a clamping rod 21 adapted to the groove 16 at the center position;

[0065] The extension body 19 is provided to extend the end length of the support block 11, so as to facilitate the loading and unloading actions of the flange 101. During the specific operation, the support assembly is first installed at the center position of the flange 101, and then the block 20 on the extension body 19 is aligned with the bayonet 18, and the extension body 19 can be installed on the support block 11. When the extension body 19 is installed on the support block 11, the clamping rod 21 moves along the rotating hole 12, and the end of the clamping rod 21 is finally embedded in the groove 16. The extension body 19 is clamped on the end of the support block 11, and the clamping rod 21 is embedded in the groove 16, which can constrain the rotation of the swivel 14, thereby stabilizing the support assembly and the flange 101, so that the support assembly can be effectively supported at the center inner circle position of the flange 101.

[0066] Reference Figures 1-8 , each of the support plates 2 is provided with a plurality of screw threads 22; a second hole 23 for the screw thread 22 to pass through is provided on the pressing plate 8, and the second hole 23 avoids the screw thread 22 to prevent the ends of the screw thread 22 from being uneven and the pressing plate 8 from being completely squeezed on the outer wall of the support plate 2;

[0067] The flange 101 has various specifications. For example, the neck-welded flange 101 has a portion on one end face that transitions to the round tube. The thickness of this portion and the flange 101 is relatively large. When the support plate 2 clamps the neck-welded flange 101, the two adjacent support plates 2 cannot clamp the flange 101 synchronously. At this time, the length of the inner end of the top screw 22 protruding from the inner side wall of the support plate 2 can be adjusted by rotation. When the two adjacent support plates 2 squeeze the flange 101, the top screw 22 can replace the support plate 2 to clamp and fix the flange 101; or when the thickness of the flange 101 is small, the support assembly protrudes from the two end faces of the flange 101. If the support plate 2 is squeezed on the flange 101, the support plate 2 cannot touch the end face of the flange 101, but is squeezed on the support assembly, resulting in failure of clamping and fixing the flange 101. At this time, the top screw 22 can be rotated, and the top screw 22 replaces the support plate 2 to squeeze on the end face of the flange 101 to fix the flange 101.

[0068] Reference Figure 13-Figure 17 , a notch 24 is formed at the end of each of the slide bars 17 , and a rubber block 25 is provided at the end of each of the protrusions 15 , the rubber block 25 is embedded in the notch 24 , and the protrusion 15 is pressed against the end of the slide bar 17 ;

[0069] The protrusion 15 is used to push the sliding rod 17 outward, and the rubber block 25 is embedded in the notch 24 to constrain the relative sliding misalignment between the protrusion 15 and the sliding rod 17. After the protrusion 15 is pressed against the sliding rod 17, the protrusion 15 can stabilize the external pushing sliding rod 17 to prevent the protrusion 15 from sliding off the sliding rod 17, resulting in failure of installation of the support assembly and the flange 101.

[0070] Reference Figure 10-12 , each of the pressure plates 8 is provided with a cooling assembly, which includes a liquid inlet pipe 26 arranged on both sides of the end shell 5, the end of the liquid inlet pipe 26 extends to the pressure plate 8, and the end of the liquid inlet pipe 26 is provided with a trigger mechanism 27 for controlling the flow of coolant, and the trigger mechanism 27 is connected to a liquid outlet pipe 28, the end of the liquid outlet pipe 28 extends above the support plate 2, and the discharge direction of the liquid outlet pipe 28 points to the flange 101;

[0071] In the embodiment of the present invention, the trigger mechanism 27 is designed to control the flow of the coolant, and the trigger mechanism 27 includes a base shell 29, the upper end of the base shell 29 is connected to the liquid inlet pipe 26, the lower end of the base shell 29 is connected to the liquid outlet pipe 28, and a trigger button 30 is provided on one side of the base shell 29. The trigger button 30 is slidably connected to the base block 38 through a compression spring 31. The trigger button 30 is provided with a third hole 32 for connecting the liquid inlet pipe 26 and the liquid outlet pipe 28; when the pressure plate 8 is pressed against the outer wall of the support plate 2, the trigger button 30 is pressed against the support plate 2, and the trigger button 30 moves into the base shell 29. When the pressure plate 8 is separated from the support plate 2, the trigger button 30 is reset under the action of the compression spring 31 to which it is connected. At this time, the No. 3 hole 32 is staggered with the liquid inlet pipe 26 and the liquid outlet pipe 28, and the trigger button 30 blocks the liquid inlet pipe 26 and the liquid outlet pipe 28. When loading and unloading, the coolant is controlled to stop flowing and spraying, thereby saving coolant.

[0072] Reference Figures 1-9 There are two bases 1, and the two bases 1 are connected together by a connecting rod 33. The two bases 1 are slidably connected to the guide rail 34 provided at the bottom thereof; the bottoms of the two bases 1 are slidably connected to the guide rail 34, and a screw rod 35 for driving the movement thereof is provided at the bottom of the base 1. The forward and reverse rotation of the screw rod 35 is driven by an external motor, and the start and stop of the motor can be controlled by a PLC, which can control the movement stroke of the base 1 on the guide rail 34, so that the flange 101 on the base 1 can be accurately moved to a position relative to the chamfering unit 36 ​​or the hole opening unit;

[0073] The guide rail 34 is further provided with chamfering units 36 on both sides, and the chamfering units 36 are used to process chamfers at the opening position of the flange 101;

[0074] like Figure 2 As shown, chamfering units 36 are symmetrically provided at both ends of the guide rail 34, and a hole punching unit is provided in the middle of the guide rail 34; after the hole punching unit in the middle of the guide rail 34 completes punching the flange 101, the two bases 1 are synchronously moved to the left, and the flange 101 of the left base 1 is the flange 101 that has been punched, and then the edge of the hole is fixed and chamfered, while the flange 101 on the right base 1 is the new flange 101 to be processed;

[0075] The chamfering unit 36 ​​is substantially identical in structure to the hole punching unit. The only difference between the two is that a chamfering drill bit is mounted on the chamfering unit 36, while a hole punching drill rod 6 is mounted on the hole punching unit. The steps performed by the chamfering unit 36 ​​and the hole punching unit are also identical.

[0076] Chamfering takes less time than drilling. After the left flange 101 is chamfered, the flange 101 can be unloaded, and then the flange 101 can be loaded. When loading is completed, the drilling of the right flange 101 is completed. Then the two bases 1 move synchronously to the right along the guide rail 34. The left flange 101 moves to a position opposite to the drilling unit to perform the drilling operation. The right flange 101, which has been drilled, moves to the right end of the guide rail 34 to perform the chamfering operation.

[0077] The flange hole opening device not only achieves the purpose of hole opening processing, but also can chamfer the opened fixing holes. At the same time, chamfering and hole opening do not interfere with each other and can be operated in parallel. In addition, chamfering, unloading and loading operations can be performed during the hole opening time period, and efficiency is further improved.

[0078] Reference Figures 1-16 , a limit plate 37 is symmetrically provided on the outer circle of the other end of each extension body 19; a base block 38 is provided at the bottom of the placement groove 10, and a limit groove 39 is provided on the upper surface of the base block 38. The extension body 19 is installed in the placement groove 10, and the limit plate 37 is embedded in the limit groove 39; through the cooperation between the limit plate 37 and the limit groove 39, the rotation of the support assembly is constrained, thereby constraining the rotation of the flange 101. When the flange 101 with the hole completed is moved from the middle position of the guide rail 34 to one end position, the deflection of the flange 101 is constrained by the limit plate 37, so that the chamfering drill bit can be accurately aligned with the opened fixing hole, ensuring high-precision chamfering during processing.

[0079] Reference Figures 1-10 , a guide rod 40 is provided at the same side of the two bases 1; a guide groove 41 is provided on the side wall of the slide 4 opposite to the base 1, and the guide rod 40 is embedded in the guide groove 41 and slides;

[0080] The base 1 moves back and forth along the guide rail 34 , and the guide rod 40 slides along the inside of the guide groove 41 , constraining the movement of the base 1 , ensuring the straightness of the movement of the base 1 , and helping to improve the chamfering accuracy.

[0081] To sum up, in the present invention, the flange hole opening device is designed to divide the drill rods 6 for opening holes into two groups, and each group of drill rods 6 is installed in the end shell 5, so that there is enough space in the end shell 5 to install the driving power source for driving the drill rods 6 to rotate. At the same time, the two groups of drill rods 6 synchronously open holes in the flange 101, which can double the efficiency of the flange 101 opening processing. A chamfering unit 36 ​​is provided to cooperate with the hole opening unit, and the opened fixed holes can be chamfered. At the same time, chamfering and hole opening do not interfere with each other and can be operated in parallel. In addition, chamfering, unloading and loading operations can be performed during the hole opening time period, and efficiency is further improved.

[0082] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A flange hole opening device, characterized in that: The base comprises a base, on which two support plates for supporting the flange are symmetrically arranged, and each support plate is provided with a plurality of holes for drilling rods to pass through; A hole-opening unit is provided on both sides of the base, and the hole-opening unit includes a slide plate, each slide plate is slidably connected to an end shell, and a plurality of drill rods are evenly arranged on the end surface of the end shell opposite to the support plate, and the end of each drill rod passes through the end shell and is connected to a motor in the end shell that drives the drill rod to rotate, and the drill rods on the two end shells are staggered; the position of the clearance hole on the support plate matches the position of the drill rod; the motor drives the drill rod to rotate, and the end shell drives the drill rod to slide along the direction of the slide plate, and the drill rod passes through the clearance hole to drill the flange; A placement groove is provided in the middle of the two support plates, the placement groove passes through the top of the support plate upward, and a support assembly with a support flange is provided between the two placement grooves, and the support assembly includes a support block, a rotating hole is provided at the center of the support block, a rotating groove is provided inside the support block, the rotating groove and the rotating hole are coaxially arranged, a swivel is provided in the rotating hole and the rotating groove, a plurality of convex portions are provided on the outer ring of the swivel, and a hexagonal groove is provided at the end of the swivel; The outer ring of the support block is evenly provided with a plurality of arc-shaped top plates, the inner side wall of the top plate is fixedly connected with a sliding rod, the end of the sliding rod passes through the rotating groove, and the rotating body is rotated, the convex part pushes the sliding rod, and the top plate squeezes the inner ring of the flange; The outer rings of both ends of the support block are provided with multiple bayonet holes, and both ends of the support block are provided with extension bodies. Multiple blocks that fit the bayonet holes are provided at the eccentric position of one end of the extension body, and a clamping rod that fits the groove is provided at the center position of one end of the extension body.

2. A flange hole opening device according to claim 1, characterized in that: The bottom of each support plate is slidably connected to the base; A pre-stressing assembly is provided on the side wall of each end shell opposite to the support plate. The pre-stressing assembly includes an elastic telescopic rod fixedly connected to the end shell, and a pressure plate is fixedly connected to the end of the elastic telescopic rod. A plurality of No. 1 holes for the drill rod to pass through are provided on the pressure plate.

3. A flange hole opening device according to claim 2, characterized in that: A plurality of threaded top screws are provided on each of the support plates; and a No. 2 hole for the top screws to pass through is provided on the pressing plate.

4. The flange hole opening device according to claim 1, characterized in that: A notch is formed at the end of each slide bar, and a rubber block is provided at the end of each convex portion. The rubber block is embedded in the notch, and the convex portion is pressed against the end of the slide bar.

5. The flange hole opening device according to claim 3, characterized in that: A cooling assembly is provided on each of the pressure plates, and the cooling assembly includes a liquid inlet pipe arranged on both sides of the end shell, the end of the liquid inlet pipe extends to the pressure plate, and the end of the liquid inlet pipe is provided with a trigger mechanism for controlling the flow of coolant, and the trigger mechanism is connected to a liquid outlet pipe, the end of the liquid outlet pipe extends above the support plate, and the discharge direction of the liquid outlet pipe points to the flange.

6. The flange hole opening device according to claim 2, characterized in that: There are two bases, which are connected together by a connecting rod, and the two bases are slidably connected to the guide rails provided at the bottom thereof; Both sides of the guide rail are also provided with chamfering units, which are used to process chamfers at the flange opening positions.

7. The flange hole opening device according to claim 1, characterized in that: A limiting plate is symmetrically arranged on the outer circle of the other end of each extension body; a base block is provided at the bottom of the placement groove, a limiting groove is opened on the upper surface of the base block, the extension body is installed in the placement groove, and the limiting plate is embedded in the limiting groove.

8. The flange hole opening device according to claim 2, characterized in that: A guide rod is provided at the same side of the two bases; a guide groove is provided on the side wall of the slide plate opposite to the base, and the guide rod is embedded in the guide groove and slides.

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