Pipe fitting pre-groove machining mechanism

Abstract

The utility model provides a pipe fitting pre-groove machining mechanism which comprises a pre-groove part and a spiral groove part, the pre-groove part is used for conducting flaring and necking on a pipe fitting alternately and forming an annular groove in the pipe fitting, and the spiral groove part is used for conducting spiral groove machining on the annular groove. The pre-grooving part comprises a pre-grooving clamping die used for clamping a pipe fitting, a moving seat movably arranged on one side of the pre-grooving clamping die and an adjusting seat movably installed on the moving seat, a plurality of punches are arranged on the adjusting seat, and the punches are distributed in the moving direction of the adjusting seat; the spiral groove machining effect of the pipe fitting is improved, and the situation that the pipe wall is thinned due to the fact that the pipe fitting is excessively stretched in the spiral groove machining process is avoided.

Description

Technical Field

[0001] The utility model relates to the field of pipe fitting processing equipment, in particular to a pipe fitting pre-groove processing mechanism. Background Art

[0002] Pipes are materials used to make pipe fittings. Different pipe fittings require different pipes. The quality of pipes directly determines the quality of pipe fittings. For example, construction projects, power plants, and chemical plants all require a variety of pipes.

[0003] With the development of science and technology, the requirements for pipes are getting higher and higher, and more and more attention is paid to the processing of pipes. Most of the existing market uses turning to process more complex pipe joints, and then welds them to copper (aluminum) pipes. This traditional process consumes a lot of materials, is difficult to process, takes a long time to process, is inefficient, and the welding process cannot guarantee airtightness.

[0004] At the same time, when the pipe fittings are subjected to processing such as grooving, the pipe wall may be thinned due to grooving stretching, which may make the pipe fittings unable to meet the processing requirements. Utility Model Content

[0005] The utility model aims to provide a pipe pre-groove processing mechanism which can increase the effect of pipe grooving processing and avoid excessive stretching of the pipe during grooving processing to cause thinning of the pipe wall.

[0006] In order to solve the above technical problems, the utility model provides a pipe pre-groove processing mechanism, including a pre-groove component and a grooving component, the pre-groove component is used to perform alternating expansion and shrinking processing on the pipe fitting and form an annular groove on the pipe fitting, the grooving component is used to perform grooving processing on the annular groove, the pre-groove component includes a pre-groove clamp for clamping the pipe fitting, a movable seat movably arranged on one side of the pre-groove clamp, and an adjustment seat movably installed on the movable seat, the adjustment seat is provided with a plurality of punches, and the plurality of punches are distributed along the moving direction of the adjustment seat.

[0007] Furthermore, the punch includes a die connected to the adjustment seat and a punch head detachably arranged on the die, and the pipe end is expanded and shrunken by a plurality of punch heads.

[0008] Furthermore, the grooving component includes a grooving clamp for clamping the pipe, a base movable along the axial direction of the pipe, a sleeve rotatably connected to the base, and a plurality of slides movably installed on the side of the sleeve close to the grooving clamp, the slides can move radially relative to the sleeve, and rollers are rotatably installed on the slides.

[0009] Furthermore, the roller is provided with a processing ring along the circumferential direction, so that when the roller performs grooving processing on the ring groove position, the processing ring is buckled in the ring groove.

[0010] Furthermore, a mandrel is provided on one side of the sleeve, and when the roller performs grooving processing on the annular groove position, the mandrel is placed on the inner side of the pipe end.

[0011] Furthermore, the core rod is provided with a material pushing groove along the circumferential direction, and the material pushing groove is used to push up the inner side of the ring groove.

[0012] The beneficial effects of the utility model are:

[0013] 1. The pre-groove processing mechanism first processes the pipe fitting to form an annular groove, and then performs grooving processing on the annular groove position, which can effectively avoid the situation where the pipe wall is greatly thinned due to direct grooving stretching;

[0014] 2. Through the coordinated use of the movable seat and the adjusting seat, the pipe fittings can be expanded and shrunken multiple times at the same station, so as to improve the forming efficiency of the pipe fittings;

[0015] 3. Through the cooperation between the roller and the mandrel, when the roller is grooving the annular groove of the pipe fitting, the mandrel can support the inner side of the annular groove to ensure the stability of the grooving process and further reduce the tensile effect on the grooving of the pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the thickening component in the utility model.

[0017] Figure 2 It is a processing schematic diagram of the thickened component in the utility model.

[0018] Figure 3 It is a structural schematic diagram of the pre-groove processing mechanism in the utility model.

[0019] Figure 4 It is a processing schematic diagram of the pre-groove component in the utility model.

[0020] Figure 5 It is a schematic diagram of the internal structure of the rotary groove component in the utility model.

[0021] Figure 6 This utility model Figure 5 A partial enlarged view of point A in the middle.

[0022] Figure 7 It is a schematic diagram of the positions of the swivel groove components and the pipe fittings in the utility model.

[0023] Figure 8 It is a processing schematic diagram of the rotary groove component in the utility model.

[0024] Fig. 9 It is a schematic diagram of the pipe fitting of the utility model after thickening treatment.

[0025] Fig.10 It is a schematic diagram of the pipe fitting of the utility model after forming a ring structure.

[0026] Fig.11 It is a schematic diagram of the pipe fitting of the utility model after the annular groove is formed.

[0027] Fig.12 It is a schematic diagram of the pipe fitting of the utility model after the grooving process.

[0028] Fig.13 It is a flow chart of step one in the utility model.

[0029] Fig.14 It is a flow chart of step 2 in the utility model.

[0030] Fig.15 It is a schematic diagram of the process of step three in the utility model.

[0031] Fig.16 It is a schematic diagram of the process of step four in the utility model.

[0032] Fig.17 It is a schematic diagram of the process of step five in the utility model.

[0033] Fig.18 It is a schematic diagram of the process of step six in the utility model.

[0034] Fig.19 It is a schematic diagram of the process of step seven in the utility model.

[0035] 1. Pipe fitting; 11. Ring structure; 12. Ring groove; 2. Thickening component; 21. Thickening clamp; 22. Punch seat; 23. Punch sleeve; 24. Elastic component; 25. Punch core; 26. Limit block; 27. Limit edge; 28. Gap; 29. ​​Washer; 3. Pre-groove processing mechanism; 31. Pre-groove clamp; 32. Moving seat; 33. Adjusting seat; 34. Punch; 35. Die; 36. Punch head; 37. Groove clamp; 38. Slide seat; 39. Roller; 310. Processing ring; 311. Mandrel; 312. Ejector groove; 313. Base; 314. Sleeve; 315. Slide sleeve. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0037] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0038] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0039] like Figure 1-19 The utility model provides a pre-groove processing mechanism for pipe fittings, which is applied to a pipe fitting thickening and pre-groove integrated processing equipment. The pipe fitting thickening and pre-groove integrated processing equipment includes a thickening component 2 for thickening treatment, a heading component for expansion and shrinkage treatment, and a pre-groove processing mechanism 3 for pipe fitting grooving treatment. After the heading component and the pre-groove processing mechanism 3 process the pipe fitting 1, the chamfering component chamfers the pipe end.

[0040] Among them, the expansion and shrinking treatments performed on the swaging head parts are both cold stamping processes, and the cold stamping process is consistent with the existing cold stamping process; the chamfering treatment method performed on the chamfered parts is consistent with the existing chamfering method, which will not be described in detail here.

[0041] The processing equipment is processed by the following steps:

[0042] Step 1: Load the pipe fitting 1 to the thickening component 2, and use the thickening component 2 to thicken one end of the pipe fitting 1;

[0043] Step 2: The thickened pipe 1 is moved to the upsetting component, and the upsetting component performs a plurality of expansion and shrinking processes on the thickened end of the pipe in sequence, and punches the pipe end to form a ring structure 11;

[0044] Step 3: chamfering the pipe end of the pipe fitting 1 having the annular structure 11;

[0045] Step 4: Move the pipe 1 to the pre-groove processing mechanism 3, and the pre-groove processing mechanism 3 performs a plurality of expansion and shrinking processes on one end of the pipe 1 having the annular structure 11, and at the same time, through the alternate expansion and shrinking processes, an annular groove 12 is formed on one side of the annular structure 11;

[0046] Step 5: Chamfering the pipe end of the pipe fitting 1 having the annular groove 12;

[0047] Step 6: The pre-groove processing mechanism 3 performs a rotary groove processing on the annular groove position 12;

[0048] Step seven, chamfer the pipe fitting 1 and cut the pipe fitting 1.

[0049] The movement of pipe fittings between the workstations is carried out by grabbing and moving them by robots to ensure that there is no need for human participation in transportation, thereby improving the processing accuracy and efficiency of pipe fittings. According to specific usage requirements, multiple robots can be installed simultaneously to improve the stability and smoothness of the movement of pipe fittings between the workstations.

[0050] Preferably, before the thickening treatment in step one, the pipe end is first flared, and then the flared position is stamped and thickened; the thickening component 2 includes a thickening clamp 21 for clamping the pipe fitting 1, and a punch seat 22 movably arranged on one side of the thickening clamp 21, a punch sleeve 23 is arranged on the side of the punch seat 22 close to the thickening clamp 21, and an elastic member 24 is connected between the punch sleeve 23 and the punch seat 22, a punch core 25 is arranged on the side of the punch seat 22 close to the thickening clamp 21, one end of the punch core 25 is passed through the punch sleeve 23 and then placed on the inner side of the punch sleeve 23, and the punch core 25 is movably matched with the punch sleeve 23, so that when the pipe end is thickened, the pipe end is located between the punch sleeve 23 and the punch core 25.

[0051] Specifically, when the pipe fitting moves to the thickening clamp, the pipe fitting is clamped and fixed by the thickening clamp, and then the pipe end is expanded by cold stamping. After the expansion process is completed, the moving punch seat drives the punch core and the punch sleeve to approach the pipe end. At this time, after the punch sleeve contacts the thickening clamp, the punch sleeve wraps the outer periphery of the pipe end, so that the punch sleeve limits the outer periphery of the pipe end, and then the punch seat continues to move and drives the punch core to extend into the inner side of the pipe end. In this process, since one side of the punch sleeve is against the thickening clamp and cannot move, the elastic part is compressed to ensure the stable movement of the punch core, and then the pipe end can be stamped by driving the punch core to move by the punch seat, so that the pipe end is squeezed and deformed on the inside and outside of the pipe fitting to thicken the pipe end, and the punch sleeve and the punch core limit the thickening position on both sides to ensure that the thickness of the pipe end after the thickening process meets the process requirements.

[0052] The purpose of the expansion process before the thickening process is to make it easier for the punch to enter the inner side of the tube end and to leave enough thickening space for the subsequent thickening process.

[0053] In one embodiment of the present solution, the punch seat is moved by controlling the oil cylinder, and the elastic member may adopt a spring structure.

[0054] It is worth mentioning that the thickening clamping die includes at least two clamping blocks arranged opposite to each other, the pipe fitting is clamped between the two clamping blocks, and the clamping or releasing of the clamping blocks is controlled by a cylinder.

[0055] Preferably, a limiting block 26 is connected to one side of the punch core 25, and the limiting block 26 is used to limit the relative position of the punch core 25 and the punch sleeve 23, and a limiting edge 27 is formed between the outer periphery of the limiting block 26 and the punch core 25. When the tube end is thickened, the tube end abuts against the limiting edge 27.

[0056] Specifically, when the punch sleeve is against the thickening clamp and the punch core continues to move, the limiting edge is against the tube end, so that when the punch core moves, the tube end can be pushed by the limiting block, thereby causing the tube end to be squeezed and contracted inward and deformed to both sides simultaneously, so as to ensure the thickening treatment effect of the tube end.

[0057] At the same time, the limit block can limit the relative position of the punch core and the punch sleeve. When the punch seat drives the punch core and the punch sleeve to move away from the thickening clamp, the elastic member pushes the punch sleeve to reset. At this time, the punch core will move relative to the punch sleeve, and the limit block can be used to maintain the punch core on the inside of the punch sleeve.

[0058] It is worth mentioning that a hole structure is opened on the inner side of the punch sleeve, the tube end is placed on the inner side of the hole structure, and the limit block can move relative to the hole structure, thereby guiding the moving direction of the punch core through the limit block.

[0059] Preferably, when the punch core 25 is in an unprocessed state, there is a gap 28 between the punch sleeve 23 and the punch seat 22, so that when one side of the punch sleeve 23 abuts against the thickened clamping die 21, the punch seat 22 can continue to move.

[0060] Specifically, when the punch sleeve abuts against the thickened clamp, due to the setting of the gap, the punch seat can continue to move and drive the punch core to perform the punching process, so the gap can ensure that the punch core has a sufficient punching stroke.

[0061] Preferably, one end of the elastic member 24 is connected to the punch sleeve 23 via a washer 29 .

[0062] Specifically, the gasket is provided to ensure that the elastic member can be stably connected to one side of the punch sleeve, and to prevent the elastic member from being separated from the punch sleeve, thereby preventing the punch sleeve from being unable to reset itself.

[0063] Preferably, the pre-groove processing mechanism 3 includes a pre-groove component and a grooving component, the pre-groove component includes a pre-groove clamp 31 for clamping the pipe fitting 1, a movable seat 32 movably arranged on one side of the pre-groove clamp 31, and an adjustment seat 33 movably installed on the movable seat 32, and a plurality of punches 34 are arranged on the adjustment seat 33, and the plurality of punches 34 are distributed along the moving direction of the adjustment seat 33.

[0064] Specifically, after the pipe fitting moves to the pre-groove clamp, the pre-groove clamp clamps and fixes the pipe fitting, and then the adjusting seat moves and adjusts relative to the moving seat, so that several punches are moved and replaced with the adjusting seat until one of the punches to be used moves to the corresponding position of the pipe fitting. At this time, the punch on the adjusting seat is driven by the moving seat to approach the pipe end, and the pipe end is expanded or shrunk by the punch. After the punch processing is completed, the moving seat can be returned to its position, and the several punches can be adjusted again by moving the adjusting seat, so that the next punch to be used is aligned with the pipe fitting, and the processing method of driving the punch by the moving seat is repeated until a ring groove structure is formed at the pipe end.

[0065] In one embodiment of the present scheme, the pre-groove clamp includes at least two oppositely arranged clamping blocks, the pipe fitting is clamped between the two clamping blocks, and the clamping or loosening of the clamping blocks is controlled by a cylinder; the bottom of the movable seat is movably installed on a guide rail, and the movable seat is moved along the guide rail by a servo motor and a screw rod transmission, and another guide rail is provided on the side of the movable seat close to the adjustment seat, and the adjustment seat is movably installed on the guide rail, and the movement of the adjustment seat is controlled by a servo motor and a screw rod transmission.

[0066] Preferably, the punch 34 includes a die 35 connected to the adjustment seat 33 and a punch head 36 detachably arranged on the die 35 , and a plurality of punch heads 36 are used to perform expansion and contraction processing on the pipe end.

[0067] Specifically, due to the detachable arrangement of the punching head and the die, different punching heads can be replaced, so that the size of the punching processing of the pipe fitting can be changed according to different process requirements to ensure the effect of the expansion and shrinking processing.

[0068] Preferably, the grooving component includes a grooving clamp 37 for clamping the pipe 1, a base 313 movable along the axial direction of the pipe, a sleeve 314 rotatably connected to the base 313, and a plurality of slides 38 movably installed on the sleeve 314 near the side of the grooving clamp 37, the slide 38 being movable relative to the radial direction of the sleeve, a roller 39 being rotatably mounted on the slide 38, and a processing ring 310 being circumferentially arranged on the roller 39 so that when the roller 39 performs grooving processing on the position of the annular groove 12, the processing ring 310 is buckled in the annular groove 12.

[0069] Specifically, the pipe fitting is moved to the grooving component, the pipe fitting is clamped and fixed by the grooving clamp, and then the base is moved closer to the pipe fitting until the roller moves to the side of the ring groove position of the pipe fitting. At this time, the slide moves relative to the sleeve, so that the roller approaches the pipe end, and the processing ring is buckled into the ring groove. Then the sleeve rotates relative to the base, and drives a number of rollers to rotate along the circumference of the pipe fitting. During the rotation of the sleeve, the ring groove position can be grooved by the processing ring. Since the ring groove position has been pre-grooved by the pre-groove component, the grooving processing of the ring groove position by the processing ring is actually a shaping processing of the ring groove position. This processing method can greatly avoid the large stretching of the pipe fitting caused by direct grooving, thereby avoiding thinning of the pipe wall.

[0070] It is worth mentioning that the self-rotation setting of the roller relative to the sleeve enables the roller to reduce the friction between the roller and the pipe when the roller is performing grooving on the pipe.

[0071] The rotary groove clamping die comprises at least two clamping blocks, the pipe fitting is clamped between the two clamping blocks, and the clamping or loosening of the clamping blocks is controlled by a cylinder.

[0072] In one embodiment of the present scheme, a sliding sleeve 315 is provided on the outer movable sleeve of the sleeve 314, and the sliding sleeve 315 and the sliding seat 38 are matched through an inclined surface, so that when the sliding sleeve 315 moves along the axial direction of the sleeve 314, the sliding sleeve 315 pushes the sliding seat 38 to move along the radial direction of the sleeve 314 through the inclined surface, and a bearing is provided between the sleeve 314 and the sliding sleeve 315, and when the sleeve 314 rotates relative to the base 313, the sliding sleeve 315 remains relatively stationary.

[0073] The bottom of the base is movably installed on the guide rail, and the movement of the base is controlled by a servo motor and a screw rod transmission; a motor is connected to one side of the base, and the sleeve is controlled to rotate relative to the base by the motor; a cylinder is arranged on the base, and the output end of the cylinder is connected to one side of the sleeve, so that the cylinder controls the sleeve to move axially relative to the sleeve, and then the cylinder pushes a plurality of slide seats to move radially along the sleeve.

[0074] Preferably, a core rod 311 is provided on one side of the sleeve. When the roller 39 performs grooving processing on the position of the annular groove 12, the core rod 311 is placed on the inner side of the tube end, and the core rod 311 is provided with a top material groove 312 along the circumferential direction. The top material groove 312 is used to support the inner side of the annular groove 12.

[0075] Specifically, when the base drives the roller to move to the side of the annular groove, the mandrel is simultaneously moved to the inner side of the pipe end, and the top material groove is pressed against the inner side of the annular groove, so that when the roller performs grooving on the pipe fitting, the inner side of the annular groove can be supported by the mandrel to avoid excessive stretching of the pipe wall and resulting in thinning of the pipe wall.

[0076] According to the above processing steps, this solution provides an embodiment for processing:

[0077] Step 1: Load the pipe 1 to the thickening component 2, expand the pipe end to a diameter of 28.3 mm, and then thicken the pipe end by the thickening component 2 to increase the wall thickness of the pipe end to 1.5 mm;

[0078] Step 2: The thickened pipe 1 is moved to the upsetting component, and the upsetting component expands the thickened end of the pipe to diameters of 34 mm, 38 mm, and 40 mm, and then shrinks the end to diameters of 36 mm and 32.3 mm, and punches the pipe end to form a ring structure 11;

[0079] Step 3: chamfering the pipe end of the pipe fitting 1 having the annular structure 11;

[0080] Step 4: Move the pipe 1 to the pre-groove processing mechanism 3, and the pre-groove processing mechanism 3 expands one end of the pipe 1 having the annular structure 11 to a diameter of 34 mm, and then shrinks it to diameters of 34 mm and 29 mm in turn, and performs shaping and stamping on the shrinking position. At this time, the pipe end is expanded again to a diameter of 32.8 mm, so that a ring groove 12 is formed on one side of the annular structure 11;

[0081] Step 5: Chamfering the pipe end of the pipe fitting 1 having the annular groove 12;

[0082] Step 6: The pre-groove processing mechanism 3 performs a rotary groove processing on the annular groove position 12;

[0083] Step seven, chamfer the pipe fitting 1 and cut the pipe fitting 1.

[0084] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A pipe pre-groove processing mechanism, characterized in that: The invention comprises a pre-groove component and a groove component, wherein the pre-groove component is used to perform alternate expansion and contraction processing on a pipe (1) and form an annular groove (12) on the pipe (1), and the groove component is used to perform groove processing on the annular groove (12). The pre-groove component comprises a pre-groove clamp (31) for clamping the pipe (1), a movable seat (32) movably arranged on one side of the pre-groove clamp (31), and an adjustment seat (33) movably mounted on the movable seat (32), wherein a plurality of punches (34) are arranged on the adjustment seat (33), and the plurality of punches (34) are distributed along the moving direction of the adjustment seat (33).

2. The pipe pre-groove processing mechanism according to claim 1, characterized in that: The punch (34) comprises a punch die (35) connected to the adjustment seat (33) and a punch head (36) detachably arranged on the punch die (35). The punch heads (36) perform expansion and contraction processing on the pipe end.

3. The pipe pre-groove processing mechanism according to claim 1, characterized in that: The groove rotating component comprises a groove rotating clamp (37) for clamping the pipe (1), a base (313) movable along the axial direction of the pipe, a sleeve (314) rotatably connected to the base (313), and a plurality of slide seats (38) movably mounted on a side of the sleeve (314) close to the groove rotating clamp (37), wherein the slide seats (38) are movable relative to the radial direction of the sleeve, and a roller (39) is rotatably mounted on the slide seats (38).

4. The pipe pre-groove processing mechanism according to claim 3, characterized in that: The roller (39) is provided with a processing ring (310) along the circumferential direction, so that when the roller (39) performs grooving processing on the position of the annular groove (12), the processing ring (310) is buckled in the annular groove (12).

5. The pipe pre-groove processing mechanism according to claim 3, characterized in that: A mandrel (311) is arranged on one side of the sleeve. When the roller (39) performs grooving processing on the position of the annular groove (12), the mandrel (311) is placed on the inner side of the pipe end.

6. The pipe pre-groove processing mechanism according to claim 5, characterized in that: The core rod (311) is provided with a material pushing groove (312) along the circumferential direction, and the material pushing groove (312) is used to push up the inner side of the annular groove (12).

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