Pipe processing apparatus and pipe processing method

Abstract

The application discloses a pipe machining device and a pipe machining method. The machining die comprises a main body part and a cutter head part, and the machining die can rotate with the center of the main body part as a rotating shaft. The cutter head part has a first arc part and an edge part connected with the first arc part. The first arc part has a first arc edge at the bottom of the cutter head part, and the edge part has a first edge at the bottom of the cutter head part. The center line of the main body part has a projection center point P at the bottom of the cutter head part. The first arc edge has a maximum distance from the center point, and the maximum distance is defined as a first distance R. A circle O is drawn with the center point P as the center and the first distance R as the radius. The first edge falls within the range of the circle O, and the distance between most of the first edge and the center point P is less than the first distance R. The machining device can punch holes in the pipe to be machined and perform flanging treatment on the pipe to be machined. The application has the advantages of simple structure and low machining cost.

Description

Technical Field

[0001] This invention relates to the field of machining, and more specifically to a pipe fitting processing equipment and a pipe fitting processing method. Background Technology

[0002] In some systems with multiple pipelines, welding between main and branch pipelines is necessary due to the different main and branch lines. A flange is machined into the middle wall of one pipeline for welding and fixing to another. This flanged structure requires drilling with a cutting tool, then switching to a flanging tool to create the flange. This equipment needs a rotating base with two stations at the machine head. The drill bit and flanging tool are rotatably connected to the rotating base. When drilling is needed, the drill bit is rotated and the machine head is lowered to drill into the pipe. Then, the drill bit is pulled up, and the flanging tool is switched to and inserted into the hole. Finally, the flanging tool is rotated and the machine head is raised, flanging the edge of the hole to form the flange.

[0003] Because this type of equipment requires drill bits and drilling tools, the structure of the machine head is relatively complex, and there are many processing steps involved. Summary of the Invention

[0004] The purpose of this invention is to provide a pipe fitting processing equipment and method that are simple in structure and low in cost.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] A pipe fitting processing device includes a base and a processing head, wherein a pipe fitting fixing mechanism is fixed to the base.

[0007] The processing head includes a drive component and a processing mold. The processing mold and the drive component are fixed together. The drive component can drive the processing mold to lift and / or rotate.

[0008] The processing mold includes a main body and a cutting head, and the processing mold is capable of rotating about the center of the main body as a rotation axis;

[0009] The blade head has a first arc portion and an edge portion connected to the first arc portion. The first arc portion has a first arc edge at the bottom of the blade head, and the edge portion has a first edge at the bottom of the blade head. The center line of the main body portion has a projection center point P at the bottom of the blade head. The first arc edge and the center point have a maximum distance, which is defined as a first distance R. A circle O is drawn with the center point P as the center and the first distance R as the radius. The first edge falls within the range of the circle O. The distance between most of the first edge and the center point P is less than the first distance R.

[0010] The blade head has a second arc portion, which connects the first arc portion and the main body portion. The second arc portion has a first connecting portion and a second connecting portion. The first connecting portion is connected to the main body portion, and the second connecting portion is connected to the first arc portion. The length direction of the main body portion is defined as the height direction H. Along the height direction H, a portion of the second connecting portion is higher than the first connecting portion. The center extension line of the main body portion is defined to pass through the blade head. In a radial direction parallel to the main body portion, the second arc portion protrudes relative to the main body portion. The distance between the second connecting portion and the center extension line of the main body portion is greater than the distance between the first connecting portion and the center extension line of the main body portion.

[0011] To achieve the above objectives, the following technical solution is also adopted:

[0012] A method for processing pipe fittings, comprising:

[0013] Clamp the pipe fitting to be processed;

[0014] The machining die moves downwards to punch holes in the pipe fitting to be processed;

[0015] The processing mold rotates and rises, forming a flange on the pipe to be processed.

[0016] The aforementioned pipe fitting processing equipment has a processing head, a processing mold and a drive component fixed to the processing head. The processing mold can be raised and lowered and / or rotated under force. The processing mold has an integrally formed main body and a cutting head. Since the cutting head has a first arc part, an edge part and a second arc part, and the distance between most of the first edge and the projection center point P is less than a first distance R, the pipe fitting processing equipment can be used for punching and drawing holes to form flanges in pipe fittings. The pipe fitting processing equipment can achieve the purpose of punching and drawing holes with a single processing mold, which has a simple structure and low manufacturing cost.

[0017] The above-mentioned pipe fitting processing method achieves the formation of a flange on the pipe fitting by controlling the downward movement and upward rotation of the processing mold. The processing method is simple, the process is simple, the processing operation is automated, and the cost is low. Attached Figure Description

[0018] Figure 1 This is a partial schematic diagram of a pipe fitting processing equipment according to the present invention;

[0019] Figure 2 for Figure 1 A partial schematic diagram of another view of the pipe fitting processing equipment shown;

[0020] Figure 3 for Figure 1 A partial schematic diagram of the fixing mechanism for the central tube fitting;

[0021] Figure 4 for Figure 1 A side view of the middle tube fixing mechanism;

[0022] Figure 5 for Figure 1 Top view of the fixing mechanism for the central tube fitting;

[0023] Figure 6 for Figure 1 A schematic diagram showing the connection between the drive component and the machining mold;

[0024] Figure 7 This is a side view of a processing mold according to the present invention;

[0025] Figure 8 for Figure 7 A bottom view of the machining mold shown;

[0026] Figure 9 for Figure 7 A top view of the machining mold shown;

[0027] Figure 10 for Figure 7 A side view of the machining mold shown;

[0028] Figure 11 for Figure 7 The diagram shown illustrates the processing steps of the machining mold on the pipe fitting to be processed.

[0029] Figure 12 This is a bottom view schematic diagram of another processing mold according to the present invention;

[0030] Figure 13 This is a schematic diagram of another processing mold of the present invention, wherein... Figure 13 and Figure 12 These are different views of the same machining mold;

[0031] Figure 14 This is a bottom view schematic diagram of another processing mold according to the present invention;

[0032] Figure 15 This is a top view schematic diagram of another processing mold according to the present invention;

[0033] Figure 16 This is a top view schematic diagram of another processing mold according to the present invention.

[0034] 10 Pipe fitting processing equipment, 11 Base, 12 Pipe fitting fixing mechanism, 13 Processing head, 131 Drive component, 132 Processing mold, 133 Servo motor, 134 Rotary motor;

[0035] 1321 Main body, 1322 Cutting head, 1323 First arc, 1324 Edge, 1325 Third arc, 1326 Second arc, 1326a First connecting part, 1326b Second connecting part, 1327 Fourth arc;

[0036] 15 First arc edge, 16 Second arc edge, 17 Screw, 18a Second edge, 18b Third edge

[0037] 121 First gripper fixing mechanism, 122 Second gripper fixing mechanism, 123 Third gripper fixing mechanism, 124 Core rod, 125 First groove, 126 Second groove, 127 Third groove, 128 Fourth groove, 13 First hole, 14 Second hole;

[0038] 20 pipe fittings to be processed Detailed Implementation

[0039] Reference Figures 1-5 , Figures 1-5 A schematic diagram of a pipe fitting processing device 10 is shown. The device includes a base 11, on which a pipe fitting fixing mechanism 12 and a processing head 13 are fixed. The processing head 13 includes a drive component 131 and a processing mold 132. The processing mold 132 is fixed to the drive component 131 and is liftable and rotatable. Figure 1 The servo motor 133, which moves in the Y direction, and the rotary motor 134, which has rotational motion, provide the machining mold 132 with up-and-down motion and / or rotational motion in the Y direction.

[0040] The pipe fitting fixing mechanism 12 includes a first gripper fixing mechanism 121 and a second gripper fixing mechanism 122. The first gripper fixing mechanism 121 and the second gripper fixing mechanism 122 have movements perpendicular to the lifting direction of the processing mold 132. Figure 1 As shown in the diagram, the first gripper fixing mechanism 121 and the second gripper fixing mechanism 122 have movements perpendicular to the inside and outside of the paper. The first gripper fixing mechanism 121 and the second gripper fixing mechanism 122 are arranged opposite to each other. When clamping the tube to be processed 20, the first gripper fixing mechanism 121 and the second gripper fixing mechanism 122 move towards each other. When releasing the tube to be processed 20, the first gripper fixing mechanism 121 and the second gripper fixing mechanism 122 move away from each other.

[0041] The pipe fixing mechanism 12 also includes a third clamping clamp fixing mechanism 123, which is used to fix the pipe to be processed 20. The third clamping clamp fixing mechanism 123 clamps and fixes the pipe to be processed 20. The first clamping clamp fixing mechanism 121, the second clamping clamp fixing mechanism 122, and the third clamping clamp fixing mechanism 123 can firmly fix the pipe to be processed 20, preventing it from shifting during processing and affecting the accuracy of punching.

[0042] The first gripper fixing mechanism 121 has a first groove 125, and the second gripper fixing mechanism 122 has a second groove 126. The first groove 125 and the second groove 126 cooperate to form a circular through hole, which is defined as the first hole 13. The first hole penetrates the first gripper fixing mechanism and the second gripper fixing mechanism.

[0043] The first gripper fixing mechanism 121 has a third groove 127 extending from its upper surface and communicating with the first groove 125. The second gripper fixing mechanism 122 has a fourth groove 128 extending from its upper surface and communicating with the second groove 126. The third groove 127 and the fourth groove 128 cooperate to form a hole, which is defined as the second hole 14. The processing mold 132 can move up and down in the second hole 14 formed by the cooperation of the third groove 127 and the fourth groove 128, that is, move in the Y direction. On the one hand, the first gripper fixing mechanism 121 and the second gripper fixing mechanism 122 provide fixation for one end of the tube 20 to be processed. On the other hand, the third groove 127 and the fourth groove 128 are provided on the upper part of the first gripper fixing mechanism 121 and the second gripper fixing mechanism 122 for the insertion of the processing mold 132, which facilitates the accurate positioning and accurate processing of the processing mold 132.

[0044] The first and second grooves are semi-circular, and the first hole is used to accommodate the pipe fitting to be processed. The third groove 127 and the fourth groove 128 can be semi-circular, square, or other shapes. The second hole 14 formed by the third groove 127 and the fourth groove 128 is smaller than the outer shape of the cutting head 1322 of the processing mold 132, so that the processing mold 132 can extend into the second hole 14 formed by the third groove 127 and the fourth groove 128 to process the pipe fitting 20.

[0045] The drive unit of the servo motor 133 is fixed to the rotary motor 134. The rotating shaft of the rotary motor 134 is fixed to the processing mold 132. The processing mold 132 moves up and down under the action of the servo motor 133 and rotates under the action of the rotating shaft of the motor. The pipe processing equipment 10 has a punching process and a hole-drawing process. In the punching process, the processing mold 132 moves downward to punch holes in the pipe to be processed by the pipe processing equipment 10. In the hole-drawing process, the processing mold 132 rotates upward.

[0046] In this embodiment, the fixing of the processing mold 132 and the drive component 131 includes a detachable connection method, such as fixing with nuts or locking with limiting pins. (See reference...) Figure 6The processing mold 132 and the drive component 131 can be fixed by screws 17. By fixing the processing mold 132 with screws at at least two locations, the position of the processing mold 132 is locked. Since the processing mold 132 is a consumable and is prone to breakage during processing, the detachable connection method facilitates subsequent maintenance and replacement. In addition, the processing mold 132 has a simple structure and low replacement cost.

[0047] The pipe fitting fixing mechanism 12 also includes a mandrel 124, which is located inside the third gripper fixing mechanism 123. The mandrel 124 is located in the first hole formed by the first groove 125 and the second groove 126, and the mandrel 124 can move in the first hole. The mandrel 124 can be used as a support for the pipe fitting processing equipment 10 during the punching process.

[0048] In the punching process, at least a portion of the mandrel 124 is located below the processing die 132, and the mandrel 124 extends below the second hole 14. When the processing die 132 moves downward to the second hole 14 and punches the pipe fitting 20 to be processed, the mandrel 124 is fitted inside the pipe fitting 20. In the drawing process, the processing die 132 moves upward, the mandrel 124 moves away from below the processing die 132, the processing die 132 extends downward into the second hole 14 and enters the punched hole of the pipe fitting 20, and rotates upward. That is, the mandrel has a first working position and a second working position. In the punching process, the mandrel is in the first working position, and at least a portion of the mandrel is located below the second hole. In the drawing process, the mandrel is in the second working position, the mandrel moves towards the third gripper fixing mechanism, and the mandrel moves away from below the processing die.

[0049] The pipe fitting processing equipment 10 can be used to process various metal pipes. In use, the pipe fitting 20 to be processed is first placed on the mandrel 124. The first clamping mechanism 121 and the second clamping mechanism 122 abut against each other, so that the pipe fitting 20 to be processed is located in the circular through hole formed by the first groove 125 and the second groove 126. Above the pipe fitting 20 to be processed, the third groove 127 and the fourth groove 128 cooperate to form the second hole 14. The processing mold 132 moves downward and enters the second hole 14. The processing mold 132 punches a hole in the pipe fitting 20 to be processed. Then the processing mold 132 moves upward, the mandrel 124 leaves the position corresponding to the second hole, the processing mold 132 moves downward and enters the punched hole in the pipe fitting 20 to be processed, and rotates and rises, so that the peripheral wall of the punched hole in the pipe fitting 20 to be processed forms an upward flange. The mandrel 124 helps the processing die 132 to provide good support when punching the pipe, reduces the deformation of the pipe 20 under punching, maintains the appearance and integrity of the pipe 20, and helps to form the punch.

[0050] Reference Figures 7-10 , Figures 7-10The illustration shows a specific embodiment of the processing mold 132. The processing mold 132 includes an integrally formed main body 1321 and a cutting head 1322. The outer peripheral wall of the cutting head 1322 has a first arc portion 1323 and an edge portion 1324. The edge portion 1324 and the first arc portion 1323 are connected. The edge portion 1324 has a first edge 1324a at the bottom of the cutting head 1322. The first arc portion 1323 has a first arc edge at the bottom of the cutting head. The center line of the main body has a projection center point P at the bottom of the cutting head. The first arc edge and the center point have a maximum distance, which is defined as a first distance R. A circle O is drawn with the center point P as the center and the first distance R as the radius. The first edge 1324a falls within the range of the circle O. The distance between most of the first edge 1324a and the center point P is less than the first distance R.

[0051] The projection center point P of the center line of the main body at the bottom of the cutter head refers to the projection of the center line of the main body toward the bottom of the cutter head.

[0052] The blade head 1322 has a second arc portion 1326, which connects the first arc portion 1323 and the main body portion 1321. The second arc portion 1326 has a first connecting portion 1326a and a second connecting portion 1326b. The length direction of the main body portion 1321 is defined as the height direction H, and the blade head 1322 is defined as the lower part. Along the height direction H, the first connecting portion 1326a is higher than the second connecting portion 1326b. The first connecting portion 1326a is connected to the main body portion 1321, and the second connecting portion 1326b is connected to the first arc portion 1323.

[0053] In the radial direction T parallel to the main body, the second arc portion protrudes relative to the main body, and the distance between the second connecting portion and the center extension line of the main body is greater than the distance between the first connecting portion and the center extension line of the main body.

[0054] The distance between most of the first edge and the projection center point P is less than the first distance R. This means that a small portion of the first edge 1324a can be equal to the first distance R between itself and the projection center point P. However, since the shape of the cutter head 1322 is non-circular, this does not include the case where the entire first edge is equal to the first distance R between itself and the projection center point P. Alternatively, the distance between the portion of the first edge above 3 / 4 and the projection center point P is less than the first distance R.

[0055] In this text, the centerline of the main body 1321 does not refer to the central axis of the main body 1321 in a narrow sense. When the main body 1321 has a centrally symmetrical structure, such as a cylindrical shape, the center of the cylinder can be considered the center of the main body 1321. When the main body 1321 has an asymmetrical structure, the center of the main body 1321 refers to the center of the rotation shaft of the rotating motor 134. The radial direction of the main body is perpendicular to the centerline of the main body. When its center is the center of the rotation shaft of the rotating motor, the radial direction of the main body is perpendicular to the center of the rotation shaft.

[0056] This pipe fitting processing equipment 10 innovatively designs the structure and process of the processing mold 132, enabling the entire equipment to simultaneously perform punching and drawing with only one processing mold 132. This solves the technical problem of complex structures and cumbersome manufacturing processes associated with multiple processing heads in current pipe fitting processing equipment. Previously, drawing mechanisms typically used a single drill bit for drilling, which produced numerous burrs. When drawing was needed, the machine head was rotated to switch to a drawing head, which was then inserted into the drilled hole. Because the size of the drawing head was equal to or slightly smaller than the size of the drilled hole, the resulting flange was relatively small. This short flange structure made subsequent welding to other pipes prone to leakage, affecting the connection. Furthermore, the drilled hole had many burrs, requiring further burr removal, increasing the number of processing steps. To achieve a larger flange formed by drilling, some drilling devices have additional drilling pins extending from the drill bit. This structure allows for simultaneous drilling and drilling. When drilling is required, the drill bit rotates downwards, forming a circular hole in the pipe. When drilling is needed, two drilling pins extend outwards from the drill bit. As the drill bit rotates upwards, the two drilling pins protrude from the circular hole, causing the wall corresponding to the circular hole to form a downward flange. This drilling device can create a large flange, but the structure of the drilling bit with drilling pins results in a high cost due to the design and control of the drilling pins. Many such drill bits utilize imported technology and are very expensive.

[0057] The structure of the processing die 132 is changed from drilling to punching, which also reduces the burr problem during processing. The outer peripheral wall of the cutting head 1322 of the processing die 132 has a first arc portion 1323 and an edge portion 1324. The distance between most of the first edge 18a and the projection center point is less than the first distance R, which makes the hole punched by the processing die 132 non-circular. Moreover, the distance between the edge corresponding to the hole and the center is less than the first distance R, which helps the second arc portion 1326 to pull the hole formed by the processing die 132 during the drawing process to form a flange. It is precisely because the distance between most of the edge of the hole of the processing die 132 and the center is less than the first distance R that a higher flange can be formed during the drawing process, so that the pipe can be better welded and fixed with other pipes later.

[0058] The edge portion 1324 of the blade head 1322 may also include a third arc portion 1325. The third arc portion 1325 has a second arc edge 16 at the bottom of the blade head. The first edge 1324a includes a second edge 18a and a third edge 18b. One end of the second edge 18a is connected to the second arc edge 16, and the other end of the second edge 18a is connected to the first arc edge 15. One end of the third edge 18b is connected to the second arc edge 16, and the other end of the third edge 18b is connected to the first arc edge 15.

[0059] The distance between the first arc edge 15 and the second arc edge 16 is defined as the second distance D1. The length direction L of the cutting head 1322 is defined as the extension direction of the second distance D1. The width direction of the cutting head 1322 is defined as the width direction W. The distance of the cutting head 1322 in the width direction W is defined as the third distance D2. The second distance D1 is greater than the third distance D2. The distance between the first arc edge 15 and the second arc edge 16 refers to the maximum distance between them. The distance of the cutting head 1322 in the width direction W is the maximum distance of the cutting head 1322 in the width direction W. The length of the main body 1321 in the length direction L is less than the second distance D1 of the cutting head 1322.

[0060] Because the second distance D1 in the length direction L of the cutting head 1322 of the processing die 132 is greater than the third distance D2 in the width direction W, when the processing die 132 is inserted into the pipe fitting, a punch hole that matches the shape of the cutting head 1322 will be formed. The outer peripheral wall of the cutting head 1322 has a second arc portion 1326. In the height direction H, the second arc portion 1326 is integrally connected to the first arc portion 1323 and the main body portion 1321. The second arc portion 1326 can be used to flange the wall of the punch hole formed in the pipe fitting. It is precisely because of the difference between the second distance D1 and the third distance D2 of the cutting head 1322 of the processing die 132 that when the processing die 132 enters the punch hole and rotates upward to flange, the second arc portion 1326 can pull out the wall corresponding to the punch hole to form a flange. This can form a higher flange, making it easier to weld the flanged pipe fitting to other pipe fittings later. The processing die 132 has a simple structure, is easy to manufacture, and has low cost.

[0061] The processing die 132 has a unique structure, enabling simultaneous punching and drawing. During the punching and drawing process, the processing die 132 is simple to operate. Through control settings, when punching is required, the processing die 132 moves up and down; when drawing is required, the processing die 132 rotates and rises. The structure of the processing die 132 has a first arc portion 1323 and a third arc portion 1325. During the drawing process, the first arc portion 1323 and the third arc portion 1325 are more conducive to compressing the wall corresponding to the punched hole, forming a higher flange.

[0062] Along the height direction H, the first arc portion 1323 and the third arc portion 1325 have a certain height. This facilitates the compression and drawing of the wall portion corresponding to the punch during the drawing process.

[0063] The second arc portion 1326 has a smooth arc surface. The second arc portion 1326 can connect the first arc portion 1323 and the main body portion 1321 in the form of an arc surface. During the drawing and rising process, the second arc portion 1326 rotates and rises to draw the wall portion corresponding to the punching hole of the tube. The arc surface is more conducive to the drawing process and helps to make the flange of the drawn hole flatter and the appearance more beautiful.

[0064] The distance of the main body 1321 in the width direction W is defined as the fourth distance D3, where the fourth distance D3 ≤ the third distance D2. The distance of the main body 1321 in the length direction L is less than the second distance D1, and the distance of the main body 1321 in the width direction W is less than the third distance D2. The structure of the main body 1321 is smaller than that of the cutting head 1322, so that when the main body 1321 extends into the punch hole, it does not affect the drawing and flanging formation. The main body 1321 can be square, cylindrical, elliptical, or a structure with different sizes at both ends, such as a variable-diameter cylinder. The main body 1321 can also have other structural forms.

[0065] The first arc portion 1323 has a first arc edge 15 at the bottom of the cutter head, and the third arc portion 1325 has a second arc edge 16 at the bottom of the cutter head. The second distance D1 is the maximum distance between the first arc edge 15 and the second arc edge 16.

[0066] Reference Figure 8 The bottom of the cutter head is elliptical. The dashed circle in the figure is the projection position of the main body on the cutter head. To more clearly define the positions of the first edge and the second edge, two auxiliary lines Z and Z' are drawn. The auxiliary lines Z and Z' are drawn with P as the center and the extension line of the first distance R from P to the first arc edge as the direction. The first arc edge 15 and the second arc edge 16 are located on the side of Z and Z' away from P, and the second edge 18a and the third edge 18b are located between Z and Z'.

[0067] In this embodiment, the second distance D1 is defined as the major axis of the ellipse, and the third distance D2 is defined as the minor axis of the ellipse; the length of the main body 1321 in the direction of the minor axis of the ellipse is the same as that of the third distance D2.

[0068] The cutting head 1322 also includes a fourth arc portion 1327. The fourth arc portion 1327 is in the form of a smooth arc surface. The fourth arc portion 1327 connects the third arc portion 1325 and the main body portion 1321. During the rotation and upward movement, the first arc portion 1323 and the third arc portion 1325 compress the peripheral wall corresponding to the punch hole, and the second arc portion 1326 and the fourth arc portion 1327 pull the peripheral wall corresponding to the punch hole. Since the machining die 132 has a small stroke during rotation and upward movement, the simultaneous pulling action through these two parts is more conducive to forming a complete and high flange on the peripheral wall corresponding to the punch hole, and the edge of the flange is more neatly processed.

[0069] Reference Figure 11 , Figure 11 The diagram illustrates the drawing process of the processing die 132. When the processing die 132 enters the punching hole of the pipe fitting 20 to be processed, the processing die 132 can form a flange facing outwards on the peripheral wall of the punching hole during the rotation and rising process. The flange has a certain height, so that the flange of the pipe fitting can be welded and fixed to other pipe fittings later.

[0070] Reference Figure 12 and Figure 13 As another implementation method, Figures 12-13 A schematic diagram of the structure of the processing mold 132 is shown. The processing mold 132 includes an integrally formed main body 1321 and a cutting head 1322. The outer peripheral wall of the cutting head 1322 has a first arc portion 1323, a third arc portion 1325, and an edge portion 1324. The extension line of the center line of the main body 1321 has a projection center point P at the bottom of the cutting head. The maximum distance between the first arc edge 15 and the center point P is equal to the maximum distance between the second arc edge 16 and the center point P. The maximum distance between the center point P and the first arc edge 15 is defined as the first distance R. A circle O is drawn with the center point P as the center and the first distance R as the radius. Most of the first edge 1324a falls within the range of the circle O. The second edge 18a and the third edge 18b also fall within the range of the circle O.

[0071] The edge portion 1324 has a third arc portion 1325. The distance between the first arc edge 15 and the second arc edge 16 is defined as the second distance D1. The length direction L of the blade head 1322 is defined as the extension direction of the second distance D1. The width direction of the blade head 1322 is defined as the width direction W. The distance of the blade head 1322 in the width direction W is defined as the third distance D2. The second distance D1 is greater than the third distance D2. The distance between the first arc edge 15 and the second arc edge 16 refers to the maximum distance between the two. The distance of the blade head 1322 in the width direction W is the maximum distance of the blade head 1322 in the width direction W. The length of the main body portion 1321 in the length direction L is less than the second distance D1 of the blade head 1322.

[0072] The blade head 1322 has a second arc portion 1326, which connects the first arc portion 1323 and the main body portion 1321. The second arc portion 1326 has a first connecting portion 1326a and a second connecting portion 1326b. The length direction of the main body portion 1321 is defined as the height direction H, and the blade head 1322 is defined as the lower part. Along the height direction H, the first connecting portion 1326a is higher than the second connecting portion 1326b. The first connecting portion 1326a is connected to the main body portion 1321, and the second connecting portion 1326b is connected to the first arc portion 1323.

[0073] The cutting head 1322 also includes a fourth arc portion 1327. The second arc portion 1326 and the fourth arc portion 1327 are in the form of smooth arc surfaces. The fourth arc portion 1327 connects the third arc portion 1325 and the main body portion 1321. During the rotation and upward movement, the first arc portion 1323 and the third arc portion 1325 extrude the peripheral wall corresponding to the punch hole, while the second arc portion 1326 and the fourth arc portion 1327 pull the peripheral wall corresponding to the punch hole. Since the machining die 132 has a small stroke during rotation and upward movement, the simultaneous pulling action through these two parts is more conducive to forming a complete and high flange on the peripheral wall corresponding to the punch hole, and the edge of the flange is more neatly processed.

[0074] Reference Figure 13 , Figure 13 To Figure 12 The machining mold 132 shown is used for Figure 7 The view is formed by the cross-section of plane AA shown. The second distance D1 is the maximum distance between the first arc edge 15 and the second arc edge 16. The bottom of the cutter head includes a second edge 18a and a third edge 18b. The second edge can be a straight line, and the third edge can be a straight line. The first arc edge 15 connects one end of the second edge 18a and the third edge 18b, and the second arc edge 16 connects the other end of the second edge 18a and the third edge 18b. The third distance D2 is the maximum distance between the second edge and the third edge.

[0075] In this embodiment, since the sum of the lengths of the first arc edge 15 and the second arc edge 16 is much smaller than the circumference of the cutter head 1322, it is advantageous for the processing die 132 to draw the peripheral wall corresponding to the punch hole to form a higher flange.

[0076] As another implementation method, refer to Figure 14 The first arc portion 1323 has a first arc edge 15 at the bottom of the cutter head, and the third arc portion 1325 has a second arc edge 16 at the bottom of the cutter head. The second distance D1 is the maximum distance between the first arc edge 15 and the second arc edge 16.

[0077] The bottom of the blade head includes a second edge and a third edge. The second edge is not a straight line and can be composed of multiple line segments or arcs. The third edge is also not a straight line and can be composed of multiple line segments or arcs. In this embodiment, the second edge includes three line segments, and the third edge includes three line segments. A first arc edge 15 connects one end of the second edge and the third edge, and a second arc edge 16 connects the other end of the second edge and the third edge. The third distance D2 is the maximum distance between the second edge and the third edge.

[0078] In this embodiment, since the lengths of the first arc edge 15 and the second arc edge 16 are much smaller than the circumference of the cutter head 1322, it is advantageous for the processing die 132 to draw the peripheral wall corresponding to the punch hole to form a higher flange.

[0079] As another implementation method, refer to Figure 15 , Figure 15 As a schematic diagram of machining mold 132, the outer peripheral wall of the cutting head 1322 has a first arc portion 1323 and an edge portion 1324. The first arc portion 1323 has a first arc edge 15 at the bottom of the cutting head. The center extension line of the main body portion 1321 has a projection center point P at the bottom of the cutting head. The maximum distance between the projection center points P of the first arc edge is defined as a first distance R. The edge portion has a first edge at the bottom of the cutting head.

[0080] With the projection center point P as the center, draw a circle O with the first distance R as the radius. The first edge 1324a falls within the range of circle O. The distance between most of the first edge and the center of the main body 1321 is less than the first distance R.

[0081] The blade head 1322 has a second arc portion 1326, which connects the first arc portion 1323 and the main body portion 1321. The second arc portion 1326 has a first connecting portion 1326a and a second connecting portion 1326b. The length direction of the main body portion 1321 is defined as the height direction H, and the blade head 1322 is defined as low. Along the height direction H, the first connecting portion 1326a is higher than the second connecting portion 1326b. The first connecting portion 1326a is connected to the main body portion 1321, and the second connecting portion 1326b is connected to the first arc portion 1323 or the third arc portion 1325. The length of the main body portion 1321 in the length direction L is less than the second distance D1 of the blade head 1322.

[0082] The second arc portion 1326 is an arc surface. During the drawing process, the second arc portion 1326 rotates and squeezes the wall corresponding to the punch. It also forms a flange around the punch by rotating and rising.

[0083] The processing mold 132 has an asymmetrical structure. Since the stroke of the processing mold 132 during the drawing process is small, the rotation speed of the processing mold 132 needs to be relatively fast in order to achieve better results. The rotation speed needs to be greater than the upward speed of the processing mold 132.

[0084] As another implementation method, refer to Figure 16 The outer peripheral wall of the cutting head 1322 of the processing mold 132 has a first arc portion 1323 and an edge portion 1324. The edge portion 1324 also has a third arc portion 1325 and a side portion 19. The first arc portion 1323 and the third arc portion 1325 are symmetrically arranged. The side portion 19 connects the first arc portion 1323 and the third arc portion 1325. The side portion has an irregular shape.

[0085] The first edge 1324a has a second edge 18a and a third edge 18b, which are irregularly shaped.

[0086] It should be understood that the cutting head 1322 of the machining mold 132 can also have various other shapes.

[0087] Pipe fitting processing equipment 10 can be used for hole processing of metal pipe fittings. Specific processing methods include:

[0088] The pipe to be processed is clamped by moving the first clamping jaw fixing mechanism 121 and the second clamping jaw fixing mechanism 122 relative to each other to clamp the pipe to be processed 20; the pipe to be processed 20 can be an aluminum pipe, a copper pipe or other metal pipe.

[0089] The processing mold 132 moves downward to punch a hole in the pipe fitting 20 to be processed. The processing mold 132 includes an integrally formed main body 1321 and a cutting head 1322. During punching, the cutting head 1322 enters the pipe fitting 20 to be processed. The outer peripheral wall of the cutting head 1322 has a first arc portion 1323 and an edge portion 1324 integrally connected to the first arc portion 1323. The first arc portion has a first arc edge at the bottom of the cutting head, and the edge portion has a first edge at the bottom of the cutting head. The center line of the main body has a projection center point P at the bottom of the cutting head. The first arc edge has a maximum distance between the center point and the first arc edge. This maximum distance is defined as a first distance R. A circle O is drawn with the center point P as the center and the first distance R as the radius. The first edge falls within the range of circle O. The distance between most of the first edge and the center point P is less than the first distance R. The processing mold rotates and rises, forming a flange on the pipe fitting to be processed. The flange is formed at the peripheral wall position corresponding to the punching.

[0090] The cutting head 1322 has a second arc portion 1326, which connects the first arc portion 1323 and the main body portion 1321. The second arc portion 1326 has a first connecting portion 1326a and a second connecting portion 1326b. The length direction of the main body portion 1321 is defined as the height direction H, and the cutting head 1322 is defined as the lower part. Along the height direction H, the first connecting portion 1326a is higher than the second connecting portion 1326b. The first connecting portion 1326a is connected to the main body portion 1321, and the second connecting portion 1326b is connected to the first arc portion 1323. The processing mold 132 rotates and rises to form a flange on the punched peripheral wall of the tube to be processed 20.

[0091] The pipe fitting processing method includes a punching process and a drawing process. In the punching process, the processing die 132 moves downward to punch a hole in the pipe fitting to be processed, and the cutting head 1322 enters the punched hole of the pipe fitting to be processed. In the drawing process, the cutting head 1322 rotates and rises inside the punched hole of the pipe fitting to be processed, and the first arc of the cutting head 1322 presses against the peripheral wall corresponding to the punched hole of the pipe fitting to be processed. The radial position of the processing die 132 during punching is the same as the radial position before rotation. Considering that if the processing die is not circular or cylindrical, its radial position is difficult to determine, therefore, for ease of explanation, the following explanation is given in this article: the radial position of the processing die is assumed based on the rotation direction of the processing die. Before rotating upward, the processing die 132 maintains its radial position unchanged, or the radial position of the processing die 132 during punching is the same as the radial position of the processing die 132 when it is inserted into the punch, so that before drawing, the shape of the punch is the same as the shape of the cutting head 1322 of the processing die 132, so that the first arc portion 1323 can squeeze and draw the wall portion corresponding to the punch during the drawing process to form a flange.

[0092] In actual operation, before the first and second clamping mechanisms clamp the pipe to be processed, the pipe to be processed 20 is first placed on the mandrel 124 and the pipe to be processed 20 is fixed by the third clamping mechanism 123.

[0093] When the processing die 132 moves downward to punch a hole in the pipe to be processed, at least a portion of the mandrel 124 is located below the direction of movement of the processing die; at least a portion of the mandrel 124 is also located below the second hole. The processing die 132 moves downward to punch a hole in the pipe to be processed 20, forming a punch in the pipe to be processed 20.

[0094] The processing mold 132 moves upward, and the mandrel 124 moves away from the corresponding lower position of the processing mold 132 along the axial direction of the tube 20 to be processed.

[0095] The processing mold 132 moves downward again and enters the punching cavity of the pipe fitting 20 to be processed;

[0096] The processing mold 132 rotates and rises, forming a flange on the peripheral wall corresponding to the punching hole of the pipe 20 to be processed.

[0097] During the downward movement of the processing die 132 and its upward movement after punching a hole in the pipe fitting 20, the processing die 132 maintains its original radial position. When the processing die 132 moves downward again, it can re-enter the already punched hole. Because the cutting head 1322 of the processing die 132 is not circular, if the processing die 132 moves too much radially during its upward movement, changing its position during punching, it will affect the smooth entry of the processing die 132 into the punched hole of the pipe fitting 20 during its subsequent downward movement. Therefore, the radial position of the processing die 132 remains unchanged during the two downward movements. When the processing die 132 enters the punched hole and rotates upward, it can pull the non-circular punched hole wall to form a flange.

[0098] In addition, during the rotation of the processing mold 132, the rotation speed of the processing mold 132 is faster than the upward speed of the processing mold 132, which helps to form a complete and consistent flange on the peripheral wall corresponding to the punching.

[0099] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. For example, the directional definitions such as "front", "back", "left", "right", "up", and "down" are used. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still combine, modify or substitute the present invention with each other. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A pipe fitting processing equipment, comprising a base and a processing head, wherein the base is fixed with a pipe fitting fixing mechanism, characterized in that: The processing head includes a drive component and a processing mold. The processing mold and the drive component are fixed. The drive component can drive the processing mold to lift and / or rotate. The pipe processing equipment includes a punching process and a drawing process. In the punching process, the processing mold moves downward. In the drawing process, the processing mold moves upward and rotates upward. The processing mold includes a main body and a cutting head. The processing mold can rotate about the center of the main body. The cutting head has a first arc portion and an edge portion connected to the first arc portion. The first arc portion has a first arc edge at the bottom of the cutting head. The edge portion has a first edge at the bottom of the cutting head. The center line of the main body has a projection center point P at the bottom of the cutting head. The first arc edge and the center point have a maximum distance, which is defined as a first distance R. With the first distance R as the center, draw a circle O. The first edge falls within the range of circle O. The distance between most of the first edge and the projection center point P is less than the first distance R. The cutting head has a second arc portion, which connects the first arc portion and the main body. The second arc portion has a first connecting portion and a second connecting portion. The first connecting portion is connected to the main body, and the second connecting portion is connected to the first arc portion. The length direction of the main body is defined as the height direction H. Along the height direction H, a portion of the first connecting portion is higher than the second connecting portion. The center extension line of the main body is defined to pass through the cutting head. In the radial direction parallel to the main body, the second arc portion protrudes relative to the main body. The distance between the second connecting portion and the center extension line of the main body is greater than the distance between the first connecting portion and the center extension line of the main body.

2. The pipe fitting processing equipment according to claim 1, characterized in that: The pipe fitting fixing mechanism includes a first gripper fixing mechanism and a second gripper fixing mechanism. Both the first and second gripper fixing mechanisms have a movement perpendicular to the lifting direction of the processing mold. The first and second gripper fixing mechanisms are arranged opposite to each other. The first gripper fixing mechanism has a first groove, and the second gripper fixing mechanism has a second groove. The first groove and the second groove cooperate to form a first hole. Along the length direction of the first gripper fixing mechanism and the second gripper fixing mechanism, the first hole penetrates through the first gripper fixing mechanism and the second gripper fixing mechanism. The first gripper fixing mechanism has a third groove extending from the upper surface of the first gripper fixing mechanism and communicating with the first groove, and the second gripper fixing mechanism has a fourth groove extending from the upper surface of the second gripper fixing mechanism and communicating with the second groove. The third groove and the fourth groove cooperate to form a second hole. The processing mold can move up and down in the second hole. The first hole is used to accommodate the pipe to be processed by the pipe processing equipment.

3. The pipe fitting processing equipment according to claim 2, characterized in that: The pipe fitting fixing mechanism includes a third gripper fixing mechanism and a mandrel. The mandrel is located inside the third gripper fixing mechanism and in the first hole. The third gripper fixing mechanism is used to fix the pipe fitting to be processed by the pipe fitting processing equipment, and the mandrel is used to limit the position of the pipe fitting to be processed by the pipe fitting processing equipment. The mandrel has a first working position and a second working position. In the punching process, the mandrel is in the first working position, and at least a portion of the mandrel is located below the second hole. In the drawing process, the mandrel is in the second working position, and the mandrel moves toward the third gripper fixing mechanism, moving away from below the processing mold.

4. The pipe fitting processing equipment according to claim 3, characterized in that: The driving component includes a servo motor and a rotary motor. The drive unit of the servo motor is fixed to the motor, and the rotating shaft of the motor is fixed to the processing mold. The processing mold moves up and down under the action of the servo motor, and rotates under the action of the rotating shaft of the motor. In the punching process, the mandrel is located below the processing mold, and the processing mold moves downward to the first hole. In the drawing process, the processing mold moves upward, the mandrel moves away from below the processing mold, the processing mold extends downward into the first hole, and rotates upward.

5. The pipe fitting processing equipment according to any one of claims 1-4, characterized in that: The edge portion has a third arc portion. The maximum distance between the first arc portion and the third arc portion is defined as the second distance D1. The length direction L of the blade head is defined as the extension direction of the second distance D1. The width direction W of the blade head corresponds to the length direction L. The distance of the blade head in the width direction W is defined as the third distance D2. The second distance D1 is greater than the third distance D2.

6. The pipe fitting processing equipment according to claim 5, characterized in that: The distance of the main body in the width direction W is defined as the fourth distance D3, and the fourth distance D3 ≤ the third distance D2.

7. The pipe fitting processing equipment according to claim 6, characterized in that: The third arc portion has a second arc edge at the bottom of the blade head, and the second distance D1 is the maximum distance between the first arc edge and the second arc edge; the bottom of the blade head is elliptical, and the second distance D1 is defined as the major axis of the ellipse, and the third distance D2 is the minor axis of the ellipse; the length of the main body portion in the direction of the minor axis of the ellipse is the same as the third distance D2.

8. The pipe fitting processing equipment according to claim 6, characterized in that: The third arc portion has a second arc edge at the bottom of the blade head, and the second distance D1 is the maximum distance between the first arc edge and the second arc edge; the first edge includes a second edge and a third edge, the second edge and the third edge are straight lines, the first arc edge connects one end of the second edge and the third edge, the second arc edge connects the other end of the second edge and the third edge, and the third distance D2 is the maximum distance between the second edge and the third edge.

9. The pipe fitting processing equipment according to claim 5, characterized in that: The outer peripheral wall of the blade head also has a fourth arc portion, the second arc portion and the fourth arc portion are in the form of a smooth arc surface, and the fourth arc portion connects the third arc portion and the main body portion; Along the height direction of the main body, the first arc portion and the third arc portion have a certain height.

10. A method for processing pipe fittings using a pipe fitting processing equipment according to any one of claims 1-9, characterized in that, include: Clamp the pipe fitting to be processed; The processing mold moves downward to punch holes in the pipe to be processed; The processing mold rotates and rises, forming a flange on the pipe to be processed.

11. The pipe fitting processing method according to claim 10, characterized in that: The process includes a punching process and a drawing process. In the punching process, the processing die moves downward to punch a hole in the pipe to be processed, and the cutting head of the processing die enters the punched hole of the pipe to be processed. In the drawing process, the cutting head rotates and rises inside the punched hole of the pipe to be processed, and the first arc portion of the cutting head presses against the peripheral wall corresponding to the punched hole of the pipe to be processed. The radial position of the processing die during punching is the same as the radial position before rotation, wherein the radial position of the processing die is assumed based on the rotation direction of the processing die.

12. The pipe fitting processing method according to claim 10 or 11, characterized in that: The punching of the pipe fitting to be processed corresponds to the bottom of the processing mold. The cutting head of the processing mold has a second arc portion, which connects the first arc portion and the main body. The second arc portion has a first connecting portion and a second connecting portion. The length direction of the main body is defined as the height direction H, and the cutting head is defined as the bottom. Along the height direction H, the first connecting portion is higher than the second connecting portion. The first connecting portion is connected to the main body, and the second connecting portion is connected to the first arc portion. During the rotation and upward movement of the processing mold, the second arc portion pushes upward against the peripheral wall corresponding to the punching of the pipe fitting to be processed.

13. The pipe fitting processing method according to claim 10 or 11, characterized in that: Before clamping the pipe to be processed, put the pipe to be processed over the mandrel to fix the pipe to be processed; When the machining die moves downward to punch holes in the pipe to be machined, at least a portion of the mandrel is located below the direction of movement of the machining die; The processing mold moves upward, and the mandrel moves away from the corresponding lower position of the processing mold along the axial direction of the tube to be processed. The processing die moves downwards again and enters the punching hole of the pipe to be processed.

14. The pipe fitting processing method according to claim 10 or 11, characterized in that: During the rotation of the processing mold, the rotation speed of the processing mold is faster than the upward speed of the processing mold.

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