Forming process of concentric reducing pipe and flaring equipment

Abstract

The invention discloses a concentric reducing pipe forming process and flaring equipment, and relates to the technical field of pipe fitting machining. The forming process comprises the steps that a blank is cut; positioning the blank; performing flaring processing; the flaring equipment comprises a machine frame, a flaring device, a flaring device and a flaring device, the flaring driving mechanism is mounted on the rack, and a flaring die can be mounted on the flaring driving mechanism; the positioning mechanism is arranged opposite to the flaring driving mechanism, and a plurality of positioning clamping blocks of the positioning mechanism are used for clamping blanks; the driving mechanisms are connected with the corresponding positioning clamping blocks; and the heating mechanism can heat the blank and is positioned between the flaring driving mechanism and the positioning mechanism. The device has the characteristics of being better in machining quality and high in working efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of pipe processing, and in particular to a forming process and a expanding device for concentric reducer pipes. Background Art

[0002] Reducers are widely used, for example, to transport gas, liquid, etc. In the production process of reducers, short billets are usually used for expansion molding, so that the two ends of the billet have different pipe diameters. In the prior art, when expanding and molding, a simple device is usually used for expansion, which easily causes cracking of the pipe mouth, and the large diameter pipe and the small diameter pipe are not concentric, and the processing efficiency is also low.

[0003] Therefore, it is necessary to improve the existing molding method. Summary of the invention

[0004] In view of this, the present application provides a forming process and expanding equipment for concentric reducer pipes to solve the technical problems that expanding with simple devices easily causes pipe mouth cracking, large diameter pipes and small diameter pipes are not concentric, and the processing efficiency is low.

[0005] To achieve the above object, the present invention provides the following technical solutions: A forming process for a concentric reducer comprises the following steps: Step S1, blank cutting: fix the long steel material, cut a section as the blank to be processed, and flatten the two ends of the blank; Step S2, blank positioning: placing the blank in step S1 on the flaring device, and positioning and clamping one end; Step S3, expanding processing: starting the expanding equipment, and expanding the blank in step S2 using the expanding die; Step S4, port chamfering: flattening and chamfering are performed on both ends of the blank in step S3, and finally a concentric reducer is obtained.

[0006] A flaring device for forming the concentric reducer described in the claim, the flaring device comprising: frame; A flaring drive mechanism mounted on the frame, wherein a flaring die can be mounted on the flaring drive mechanism; A positioning mechanism arranged opposite to the expansion drive mechanism, wherein a plurality of positioning clamping blocks of the positioning mechanism are used for clamping the blank; A plurality of driving mechanisms connected to corresponding positioning clamps; A heating mechanism capable of heating the blank is located between the expansion drive mechanism and the positioning mechanism.

[0007] Furthermore, the expansion drive mechanism comprises: A driving motor mounted on the frame; A screw connected to the drive motor; A movable seat threadedly connected to the screw rod, wherein the movable seat is slidably matched with the frame; A fixed frame connected to the movable seat, and the expanding die can be installed on the fixed frame.

[0008] Furthermore, the positioning mechanism comprises: a mounting frame supported on the frame; A plurality of installation boxes are annularly installed on the installation frame, the driving mechanism is installed in the corresponding installation box, and the positioning clamp block is connected to the corresponding driving mechanism.

[0009] Furthermore, the driving mechanism comprises: A drive assembly installed in the installation box; A driven component movably connected to the driving component can drive the driven component to drive the positioning clamp to move horizontally to clamp the blank.

[0010] Furthermore, the driving assembly comprises: a second electric motor mounted in the mounting box; a turntable connected to an output end of the second motor; A curved rod is hinged on the rotating disk.

[0011] Furthermore, the driven component comprises: a push rod hinged to the bent rod, the push rod being in sliding cooperation with the mounting box; A swing plate hinged in the installation box, wherein the swing plate is slidably matched with the push rod; A slide cylinder is slidably connected to the installation box, the swing plate is slidably connected to the slide cylinder, and the slide cylinder is connected to the positioning clamp block through a connecting block.

[0012] Furthermore, the heating mechanism comprises: A support base slidably arranged on the frame; A cylinder is arranged on the frame, and the cylinder is connected to the support seat; A fixed cylinder is fixed on the support seat, wherein an electromagnetic induction heating coil for heating the blank is arranged in the fixed cylinder.

[0013] It can be seen from the above technical solution that the advantages of the present invention are: 1. In the present application, a special expanding die is used to expand the blank, which can prevent the blank from cracking due to the expansion of a simple device, making the processing method more perfect, and can make the concentricity higher, thereby improving the processing quality.

[0014] 2. The expansion equipment in the present application adopts a positioning mechanism to position the blank, a driving mechanism to drive the positioning clamp to clamp the blank, and a heating mechanism to heat the blank, so that the blank can be expanded when the blank is easily deformed by heat. Not only is the expansion easy to form, but the coordination of the three can make the work efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0016] Figure 1 This is a schematic diagram of the structure of this application.

[0017] Figure 2 A three-dimensional diagram of the connection between the joint and the expansion mold of the present application.

[0018] Figure 3 This is a schematic diagram of the structure of the connection between the joint and the expansion mold of the present application.

[0019] Figure 4 This is a schematic diagram of the structure of the positioning mechanism of this application.

[0020] Figure 5 It is a cross-sectional view of the positioning mechanism of the present application.

[0021] Figure 6 for Figure 5 A partial enlarged view of .

[0022] Figure 7 for Figure 6 A partial enlarged view of point A.

[0023] Figure 8 This is a three-dimensional diagram of the positioning clamp of the present application.

[0024] Fig. 9 This is a right side view of the heating mechanism of the present application.

[0025] Fig.10 This is a top view of the heating mechanism of the present application.

[0026] Fig.11 This is a process flow chart of this application.

[0027] Fig.12 This is a schematic diagram of the structure of the concentric reducer of the present application.

[0028] Fig.13 This is a structural schematic diagram of another embodiment of the connection between the disc and the mounting portion of the present application.

[0029] Fig.14 for Fig.13 A partial enlarged view of point B.

[0030] Description of the accompanying drawings: 1-frame; 11-vertical plate; 12-slide; 2-expansion drive mechanism; 21-drive motor; 22-screw rod; 23-linear slide rail; 24-moving seat; 241-slider; 25-fixed frame; 26-installation portion; 261-conical hole; 262-first countersunk hole; 263-first through hole; 264-side groove; 265-third guide groove; 266-second countersunk hole; 3-connecting plate; 31-expansion mold; 32-disc; 321-conical shaft; 322-sunk groove; 3221-second side inclined surface; 5-positioning mechanism; 51-installation box; 52-positioning clamp; 521-anti-slip protrusion; 53-installation frame; 54-support plate; 6-drive mechanism; 61-second motor; 611-carrying plate; 62-turntable; 6 21-bending rod; 63-push rod; 631-cam shaft; 64-limiting plate; 65-fixed seat; 66-swing plate; 661-first guide groove; 662-second guide groove; 67-first slide rod; 68-slide cylinder; 681-guide shaft; 69-connecting block; 7-heating mechanism; 71-support seat; 711-connecting block; 712-slide seat; 72-fixed cylinder; 73-electric control box; 74-electromagnetic induction heating coil; 75-cylinder; 76-second slide rod; 8-locking mechanism; 81-handle; 811-screw rod; 82-end cover; 83-wear-resistant block; 84-moving block; 85-locking head; 851-first side slope; 86-connecting arm; 87-auxiliary guide block; 88-helical compression spring; 100-blank; 200-concentric reducer. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the implementation modes and the accompanying drawings. Here, the illustrative implementation modes and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0032] Example 1 refer to Figures 1 to 10 ,like Figure 1As shown, the present embodiment provides a flaring device for forming concentric reducers, the flaring device comprising: a frame 1, a flaring drive mechanism 2, a positioning mechanism 5, a plurality of drive mechanisms 6 and a heating mechanism 7, the flaring drive mechanism 2 is mounted on the frame 1, and a flaring die 31 can be mounted on the flaring drive mechanism 2; the positioning mechanism 5 is arranged on the frame 1 and is arranged opposite to the flaring drive mechanism 2, the positioning mechanism 5 comprises a plurality of positioning clamps 52 for clamping the blank 100; the drive mechanism 6 is connected to the corresponding positioning clamps 52, the drive mechanism 6 can drive the corresponding positioning clamps 52 to move, thereby clamping the blank 100; the heating mechanism 7 is located between the flaring drive mechanism 2 and the positioning mechanism 5, the heating mechanism 7 can heat the blank 100, thereby facilitating the rapid deformation of the blank 100 when the flaring die 31 flares the blank 100.

[0033] In the embodiment of the present application, the expansion drive mechanism 2 includes: a driving motor 21, a screw rod 22, a movable seat 24 and a fixed frame 25, the driving motor 21 is installed on the frame 1; one end of the screw rod 22 is connected to the driving motor 21, and the two ends of the screw rod 22 are respectively connected to the corresponding vertical plates 11 arranged on the frame 1 through bearings, and the two ends of the screw rod 22 are respectively connected to the corresponding vertical plates 11, so that the left and right ends of the screw rod 22 can be stably supported, thereby making the transmission of the screw rod 22 more stable; the movable seat 24 is threadedly connected to the screw rod 22, and the movable seat 24 is slidably connected to the frame 1; the lower end of the fixed frame 25 is connected to the upper end of the movable seat 24, and the expansion mold 31 can be installed on the fixed frame 25.

[0034] Preferably, a linear slide rail 23 is also provided on the frame 1, and a slider 241 capable of horizontally sliding on the linear slide rail 23 is provided at the bottom of the movable seat 24. The slider 241 cooperates with the linear slide rail 23 to improve the stability of the movable seat 24 driving the fixed frame 25 and the mounting portion 26 to move, thereby making the concentricity of the expanding mold 31 and the blank 100 more accurate.

[0035] like Figure 2 and Figure 3 As shown, the expansion die 31 can be positioned and installed together with the mounting portion 26 on the fixing frame 25 through a joint.

[0036] In the embodiment of the present application, the joint includes a connecting plate 3 and a disc 32. The disc 32 is provided with a threaded hole that can be connected to the mounting portion 26 by screws. The disc 32 is positioned and connected to the mounting portion 26, which can improve the accuracy of the installation position of the joint and the mounting portion 26, thereby improving the accuracy of the installation of the expanding mold 31, thereby achieving a better expanding effect. The connecting plate 3 is connected between the disc 32 and the expanding mold 31. When replacing, it is only necessary to remove the disc 32 from the mounting portion 26, which makes it more convenient to replace expanding molds 31 of different sizes.

[0037] The driving motor 21 is started to drive the screw rod 22 to rotate, so that the moving seat 24 drives the joint to move horizontally through the fixed frame 25 and the mounting part 26 under the restriction of the linear slide rail 23, and the expanding die 31 is installed on the joint, thereby making the expanding die 31 move horizontally, and the expanding die 31 moves to the right and extends into the blank 100 clamped by the positioning mechanism 5 and heated by the heating mechanism 7, so as to expand the blank 100.

[0038] like Figure 4 As shown, the positioning mechanism 5 includes: a mounting frame 53 and a plurality of mounting boxes 51. The mounting frame 53 is fixedly supported on the frame 1 through a support plate 54, and the mounting frame 53 is located on the right side of the heating mechanism 7; a plurality of mounting boxes 51 are annularly installed on the mounting frame 53, the driving mechanism 6 is installed in the corresponding mounting box 51, and the positioning clamp 52 is connected to the corresponding driving mechanism 6.

[0039] like Figure 8 As shown, the positioning clamp 52 has an arc-shaped clamping surface, and a plurality of anti-skid protrusions 521 are distributed on the clamping surface. The anti-skid protrusions 521 are preferably made of rubber material, which can avoid scratches on the blank 100 when clamping while ensuring a secure clamping, thereby improving the safety of clamping.

[0040] like Figure 5 and Figure 6 As shown, the driving mechanism 6 includes: a driving component and a driven component, the driving component is installed in the installation box 51; the driven component is movably connected to the driving component, and the driving component can drive the driven component to drive the positioning clamp 52 to move horizontally.

[0041] In the embodiment of the present application, the driving assembly includes: a second motor 61, a turntable 62 and a curved rod 621. The second motor 61 is installed in the installation box 51 through a supporting plate 611; the turntable 62 is connected to the output end of the second motor 61; and the curved rod 621 is hinged on the turntable 62.

[0042] In the embodiment of the present application, the driven assembly includes: a push rod 63, a rocker plate 66 and a slide cylinder 68. The push rod 63 is hinged to the curved rod 621, and the push rod 63 is slidably matched with the installation box 51; the rocker plate 66 is hinged in the installation box 51 through the fixed seat 65, and the rocker plate 66 is slidably matched with the push rod 63; the slide cylinder 68 is slidably connected to the installation box 51, the rocker plate 66 is slidably connected to the slide cylinder 68, and the slide cylinder 68 is connected to the positioning clamp block 52 through the connecting block 69.

[0043] like Figure 6 and Figure 7As shown, a convex shaft 631 is installed at one end of the push rod 63 away from the bent rod 621, a first guide groove 661 and a second guide groove 662 are provided on the swing plate 66, the first guide groove 661 is located between the second guide groove 662 and the fixed seat 65, the convex shaft 631 is slidably matched with the first guide groove 661, and a guide shaft 681 is provided on the slide cylinder 68, and the guide shaft 681 is slidably matched with the second guide groove 662.

[0044] Preferably, a limit plate 64 capable of limiting the push rod 63 to slide horizontally and a first slide bar 67 parallel to the push rod 63 are also provided in the installation box 51. The limit plate 64 can also provide support for the push rod 63, thereby improving the stability of the movement of the push rod 63. The slide cylinder 68 is slidably mounted on the first slide bar 67, which can make the slide cylinder 68 drive the positioning clamp 52 to move more smoothly.

[0045] In the present application embodiment, Figure 6 and Figure 7 To explain, the second motor 61 starts to drive the turntable 62 to rotate counterclockwise, and the turntable 62 pushes the crank 621 to swing to the right and lower side, so the push rod 63 moves to the right and pushes the swing plate 66 to swing clockwise. With the cooperation of the guide shaft 681, the slide cylinder 68 drives the positioning clamp 52 to move to the right (the "right" at this time is Figure 4 The center direction of the plurality of positioning clamps 52 is such that the plurality of positioning clamps 52 approach each other at the same time to clamp the blank 100.

[0046] like Fig. 9 As shown, the heating mechanism 7 includes: a support seat 71, a cylinder 75 and a fixed cylinder 72, the support seat 71 is slidably set on the frame 1; the cylinder 75 is set on the frame 1, and the cylinder 75 is connected to the support seat 71; the fixed cylinder 72 is fixed on the support seat 71, and an electromagnetic induction heating coil 74 for heating the blank 100 is set in the fixed cylinder 72.

[0047] like Fig. 9 and Fig.10 As shown, an electric control box 73 is provided at the bottom of the fixed cylinder 72, and the electric control box 73 is electrically connected to the electromagnetic induction heating coil 74 to realize the control of the electromagnetic induction heating coil 74. The electric control box 73 can control the electromagnetic induction heating coil 74 to heat the deformation area of ​​the blank 100. A connecting block 711 and two slides 712 respectively located on the front and rear sides of the connecting block 711 are provided at the bottom of the support seat 71. The cylinder 75 is connected to the connecting block 711 to realize the purpose of the cylinder 75 driving the support seat 71 to move horizontally. The slide 712 is slidably connected to the second slide bar 76, and the second slide bar 76 is arranged on a slide 12, and the slide 12 is arranged on the frame 1. Through the sliding cooperation of a pair of slide seats 712 and a pair of second slide bars 76, the stability of the movement of the support seat 71 can be improved, thereby avoiding affecting the stability of the blank 100 installed on the positioning mechanism 5.

[0048] In the embodiment of the present application, the electric control box 73 is also electrically connected to the drive motor 21 and the second motor 61 to control the drive motor 21 and the second motor 61 to perform corresponding actions.

[0049] refer to Figure 11 to Figure 12 ,like Fig.11 As shown, this embodiment also provides a forming process of a concentric reducer, comprising the following steps: Step S1, blank cutting: fix the long steel material to ensure that it will not move during the cutting process, and use a cutting tool to cut a section from the long steel material as the blank 100 to be processed according to the required size requirements; Step S2, blank positioning: the cut blank 100 is placed on the positioning mechanism 5, which is used to fix the blank, and multiple positioning clamps 52 are simultaneously driven by multiple driving mechanisms 6 to make them approach the right end of the blank 100 at the same time and clamp it, and then the electromagnetic induction heating coil 74 is energized to heat the blank 100 passing through the fixing cylinder 72, so as to perform subsequent expansion processing; Step S3, rough expansion processing: start the driving motor 21, and the motor drives the expansion die 31 to expand the heated blank 100, and the expansion die 31 expands one end of the blank 100 to form a desired different diameter shape; Step S4, port chamfering: flatten the ends of the expanded blank 100 to ensure that the port is flat, and chamfer the port to remove the sharp edge of the port to make it smooth. After these processing steps, the concentric reducer 200 (such as Fig.12 ).

[0050] Example 2 refer to Figure 13 to Figure 14 ,like Fig.13 As shown, the end of the disc 32 away from the expanding die 31 has a tapered shaft 321, which is inserted into the tapered hole 261 of the mounting portion 26 and locked by the locking mechanism 8 to improve the reliable locking between the disc 32 and the mounting portion 26.

[0051] like Fig.14As shown, the locking mechanism 8 is vertically installed in the accommodating cavity of the mounting portion 26. The locking mechanism 8 includes a screw 811, a moving block 84, a locking head 85, a connecting arm 86 and a helical compression spring 88. The screw 811 can rotate in the first countersunk hole 262 of the accommodating cavity. The moving block 84 is slidably arranged in the first through hole 263 of the accommodating cavity. The lower end of the screw 811 abuts against the moving block 84. The locking head 85 is connected to the lower end of the moving block 84. The connecting arm 86 is connected to one side of the moving block 84, and the connecting arm 86 can move in the side groove 264 of the accommodating cavity. The helical compression spring 88 is connected between the connecting arm 86 and the second countersunk hole 266 of the accommodating cavity. The rotation of the screw 811 will drive the moving block 84 to move downward, and the moving block 84 will drive the locking head 85 and the connecting arm 86 to move downward synchronously, so that the locking head 85 can be inserted into the countersunk groove 322 of the tapered shaft 321 to achieve fixed locking between the disc 32 and the mounting portion 26.

[0052] Preferably, in order to increase the service life, a wear-resistant block 83 is provided at the upper end of the moving block 84 , and the lower end of the screw 811 abuts against the wear-resistant block 83 , which can reduce the wear of the moving block 84 .

[0053] The first countersunk hole 262 is internally threaded with an end cap 82, and the screw 811 is threadedly connected to the end cap 82. The end cap 82 can not only protect the parts inside the accommodating cavity, but also install and limit the screw 811, so that it is more convenient and stable to operate the screw 811. A handle 81 is provided on the top of the screw 811 for easy handheld operation.

[0054] Preferably, in order to improve the smoothness of the movement of the connecting arm 86, an auxiliary guide block 87 is provided on one side of the connecting arm 86, and the auxiliary guide block 87 can slide vertically in the third guide groove 265 of the accommodating cavity.

[0055] Preferably, the locking head 85 has a first side inclined surface 851 , and the recessed groove 322 has a second side inclined surface 3221 that can abut against the first side inclined surface 851 , so as to restrict the locking head 85 in the recessed groove 322 .

[0056] The accommodating cavity is composed of a first countersunk hole 262, a first through hole 263, a side groove 264, a third guide groove 265 and a second countersunk hole 266, wherein the first through hole 263 and the side groove 264 are arranged in parallel at the lower end of the first countersunk hole 262, the second countersunk hole 266 is arranged at the lower end of the side groove 264, and the third guide groove 265 is connected to the side of the side groove 264 away from the first through hole 263.

[0057] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A forming process for concentric reducer pipes, characterized in that: The following steps are involved: Step S1, blank cutting: fix the long steel material, cut a section as the blank (100) to be processed, and flatten the two ends of the blank (100); Step S2, blank positioning: placing the blank (100) in step S1 on the flaring device, and positioning and clamping one end; Step S3, expanding processing: starting the expanding equipment, and expanding the blank (100) in step S2 using the expanding die (31); Step S4, chamfering the ends: flattening and chamfering are performed on both ends of the blank (100) in step S3, and finally a concentric reducer (200) is obtained.

2. An expansion device for forming the concentric reducer according to claim 1, characterized in that: The expansion equipment includes: Rack(1); A flaring drive mechanism (2) mounted on the frame (1), wherein a flaring die (31) can be mounted on the flaring drive mechanism (2); a positioning mechanism (5) arranged opposite to the expansion drive mechanism (2), wherein a plurality of positioning clamping blocks (52) of the positioning mechanism (5) are used for clamping the blank; A plurality of drive mechanisms (6), wherein the drive mechanisms (6) are connected to corresponding positioning clamps (52); A heating mechanism (7) capable of heating a blank (100), wherein the heating mechanism (7) is located between the expansion drive mechanism (2) and the positioning mechanism (5).

3. The expansion device for concentric reducers according to claim 2, characterized in that: The flaring drive mechanism (2) comprises: A driving motor (21) mounted on the frame (1); A screw rod (22) connected to the driving motor (21); A movable seat (24) threadedly connected to the screw rod (22), the movable seat (24) being in sliding cooperation with the frame (1); A fixed frame (25) connected to the movable seat (24), and the expanding die (31) can be mounted on the fixed frame (25).

4. The expansion device for concentric reducers according to claim 3, characterized in that: The expanding die (31) is mounted on the mounting portion (26) on the fixing frame (25) via a joint.

5. The expansion device for concentric reducers according to claim 2, characterized in that: The positioning mechanism (5) comprises: A mounting frame (53) supported on the frame (1); A plurality of mounting boxes (51) are annularly mounted on the mounting frame (53), the driving mechanism (6) is mounted in a corresponding mounting box (51), and the positioning clamp block (52) is connected to the corresponding driving mechanism (6).

6. The expansion device for concentric reducers according to claim 5, characterized in that: The driving mechanism (6) comprises: A drive assembly installed in the installation box (51); A driven component movably connected to the driving component, the driving component being capable of driving the driven component to drive the positioning clamp (52) to move so as to clamp the blank (100).

7. The expansion device for concentric reducers according to claim 6, characterized in that: The drive assembly comprises: a second motor (61) installed in the installation box (51); a rotating disk (62) connected to the output end of the second motor (61); A curved rod (621) is hingedly connected to the rotating disk (62).

8. The expansion device for concentric reducers according to claim 7, characterized in that: The driven component comprises: a push rod (63) hinged to the curved rod (621), the push rod (63) being in sliding cooperation with the installation box (51); A swing plate (66) hingedly connected in the installation box (51), the swing plate (66) being slidably matched with the push rod (63); A slide cylinder (68) is slidably connected to the installation box (51), the swing plate (66) is slidably connected to the slide cylinder (68), and the slide cylinder (68) is connected to the positioning clamp block (52) via a connecting block (69).

9. The expansion device for concentric reducers according to claim 2, characterized in that: The heating mechanism (7) comprises: A support base (71) slidably disposed on the frame (1); A cylinder (75) disposed on the frame (1), wherein the cylinder (75) is connected to the support seat (71); A fixed cylinder (72) fixed on the support seat (71), wherein an electromagnetic induction heating coil (74) for heating the blank (100) is arranged inside the fixed cylinder (72).

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