Pipe fitting continuous necking forming device

Abstract

The invention discloses a pipe fitting continuous necking forming device which comprises a working platform, a lower clamping die is installed in the middle of the working platform, an upper clamping die is arranged over the lower clamping die in a matched mode, and the upper clamping die and the lower clamping die clamp a pipe fitting; moving forming bases are installed on the working platform on the two sides of the lower clamping die in a sliding mode respectively and driven by a linear forming power mechanism to move towards or away from the lower clamping die. Switching moving seats are slidably mounted on the opposite faces of the forming moving seats on the two sides respectively, the moving directions of the switching moving seats on the two sides are parallel to each other, a plurality of pier rib assemblies are mounted on the switching moving seats at intervals in the moving directions of the switching moving seats, and the corresponding pier rib assemblies on the switching moving seats on the two sides directly face the two ends of the pipe fitting; in the forming process, the forming moving seat moves towards the lower clamping die to form the annular protrusions on the pipe fitting, the different pier rib assemblies are switched to act on the pipe fitting one by one in combination with movement of the switching moving seat, and therefore forming of the multiple annular protrusions is achieved in one-time clamping of the pipe fitting, the forming efficiency is greatly improved, and the machining precision is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of pipe forming equipment technology, and in particular to a continuous pipe forming device for narrowing. Background Technology

[0002] In modern industrial production, pipe fittings, as key components for connecting and transmitting media, are in increasing demand due to the booming development of various industries. Especially in the automotive manufacturing industry, pipe fittings not only play an important functional role, but their quality and processing efficiency directly affect the assembly and connection with other components, thus influencing the performance of the final product and production efficiency.

[0003] Existing pipe forming methods have certain limitations. For example, when forming annular protrusions at the ends of pipes, it is necessary to move between different forming stations to form them one by one, repeatedly clamping and positioning them. This repetitive operation is not only time-consuming and reduces the overall processing efficiency, but also affects the processing accuracy. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a structurally sound continuous constriction forming device for pipe fittings, which enables the forming of multiple annular protrusions in a single clamping of the pipe fitting, thereby significantly improving forming efficiency and ensuring processing accuracy.

[0005] The technical solution adopted in this invention is as follows:

[0006] A continuous pipe fitting necking forming device includes a working platform. A lower clamping mold is installed in the middle of the working platform, and an upper clamping mold is arranged directly above the lower clamping mold. The upper clamping mold is driven by a clamping mechanism to move toward the lower clamping mold, and the upper and lower clamping molds clamp the pipe fitting to be formed. Forming moving seats are slidably installed on the working platform on both sides of the lower clamping mold. The forming moving seats are driven by a forming linear power mechanism to move toward or away from the lower clamping mold. Switching moving seats are slidably installed on the facing surfaces of the forming moving seats on both sides. The moving directions of the switching moving seats on both sides are parallel to each other. Multiple rib assemblies are installed at intervals along the moving direction of the switching moving seats. The corresponding rib assemblies on the switching moving seats on both sides are directly opposite the two ends of the pipe fitting.

[0007] As a further improvement to the above technical solution:

[0008] The forming movable seat has a support arm extending along its own moving direction, and a lead screw is rotatably installed between the support arms. The end of the lead screw is poweredly connected to a switching moving mechanism, and the switching moving seat is fitted onto the lead screw via a nut screw pair.

[0009] A mounting groove is provided on the side of the switching moving seat facing the forming moving seat. A guide rail seat is installed on the end face of the forming moving seat and mounted in the mounting groove. Guide rails are installed on the upper and lower sides of the guide rail seat respectively. A slider is installed on the opposite wall of the mounting groove and slides to slide with the corresponding guide rail, thus forming a sliding fit between the switching moving seat and the forming moving seat.

[0010] The structure of a single rib assembly includes: a support installed on the side of the switching moving seat; a through hole is provided on the support; a cylindrical pin is coaxially fitted in the through hole; an end cap is installed at one end of the pin; a shaft pin is installed at the other end of the pin; an elastic element is installed in the pin between the end cap and the shaft pin; the shaft pin extends out of the support and is positioned towards the pipe fitting; and a limiting block is also included to prevent the shaft pin from disengaging from the support.

[0011] At least one rib assembly is provided with a positioning component below it. The positioning component moves with the rib assembly, and the positioning pin at the end of the positioning component is fitted into the hole of the fitting on the pipe fitting.

[0012] The number of rib assemblies on both sides of the switching moving seat is the same, and they are arranged in a one-to-one correspondence.

[0013] The working platform is equipped with a lifting mechanism, and the lower clamping mold is installed on the lifting mechanism, which lifts the lower clamping mold upward.

[0014] The upper and lower clamping molds have accommodating holes on their opposite surfaces for clamping the pipe fittings.

[0015] It also includes an alignment mechanism that drives the lower alignment block downwards, so that the side of the alignment block fits against the end of the pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] During the forming process, the present invention uses a forming moving seat to move towards the lower clamping mold to form the annular protrusions on the pipe. By switching the moving seat, different rib components are switched to act on the pipe one by one, thereby forming multiple annular protrusions in one clamping of the pipe, which greatly improves the forming efficiency and ensures the processing accuracy.

[0018] The present invention also includes the following advantages:

[0019] The rotation of the lead screw drives the switching moving seat to move relative to the forming moving seat along the lead screw axis via the nut screw pair, thereby switching between the rib assemblies. The use of the lead screw and nut screw pair effectively ensures the reliability of the movement of the switching moving seat, and ensures the accuracy and reliability of the switching of the rib assemblies. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention.

[0021] Figure 2 This is a schematic diagram of the linear motion mechanism and the forming moving seat of the present invention from a top view.

[0022] Figure 3 This is a schematic diagram illustrating the installation of the molding movable seat, the switching movable seat, and the reinforcing rib assembly of the present invention.

[0023] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0024] Figure 5 This is a schematic diagram of the structure of the reinforcing bar assembly of the present invention.

[0025] Figure 6 This is a schematic diagram of the finished product after the pipe fitting of the present invention has been formed.

[0026] Figure 7 This is a schematic diagram showing the cooperation between the upper and lower clamping molds of the present invention.

[0027] The components include: 1. Working platform; 2. Forming linear power mechanism; 3. Forming moving seat; 4. Switching moving seat; 5. Rib assembly; 6. Lower clamping mold; 7. Upper clamping mold; 8. Alignment mechanism; 9. Switching moving mechanism; 10. Pipe fitting; 11. Annular protrusion; 12. Assembly parts;

[0028] 20. Positioning components;

[0029] 31. Guide rail base;

[0030] 41. Assembly slot;

[0031] 50. Support; 51. Pin seat; 52. Elastic element; 53. End cap; 54. Shaft pin; 55. Limiting block;

[0032] 61. Lifting mechanism;

[0033] 71. Clamping mechanism;

[0034] 91. Lead screw; 92. Slider; 93. Guide rail. Detailed Implementation

[0035] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0036] like Figure 1 and Figure 2As shown, a continuous pipe fitting forming device according to this embodiment includes a working platform 1. A lower clamping mold 6 is installed in the middle of the working platform 1, and an upper clamping mold 7 is arranged directly above the lower clamping mold 6. The upper clamping mold 7 is driven by a clamping mechanism 71 to move toward the lower clamping mold 6, and the upper clamping mold 7 and the lower clamping mold 6 clamp the pipe fitting 10 to be formed. Forming moving seats 3 are slidably installed on the working platform 1 on both sides of the lower clamping mold 6. The forming moving seats 3 are driven by a forming linear power mechanism 2 to move toward or away from the lower clamping mold 6. Switching moving seats 4 are slidably installed on the facing surfaces of the forming moving seats 3 on both sides. The moving directions of the switching moving seats 4 on both sides are parallel to each other. Multiple rib assemblies 5 are installed at intervals along the moving direction of the switching moving seats 4. The corresponding rib assemblies 5 on the switching moving seats 4 on both sides are directly opposite the two ends of the pipe fitting 10.

[0037] In this embodiment, during the forming process, the forming moving seat 3 moves toward the lower clamping mold 6 to form the annular protrusion 11 on the pipe fitting 10. Combined with the movement of the switching moving seat 4, different rib assemblies 5 are switched to form the pipe fitting 10 one by one, so that multiple annular protrusions 11 are formed in one clamping of the 10 pipe fittings.

[0038] The forming moving seat 3 has a support arm extending along its own moving direction. A lead screw 91 is rotatably installed between the support arms. The end of the lead screw 91 is poweredly connected to a switching moving mechanism 9. The switching moving seat 4 is fitted onto the lead screw 91 via a nut and screw pair.

[0039] In this embodiment, the rotation of the lead screw 91 drives the switching moving seat 4 to move relative to the forming moving seat 3 along the axial direction of the lead screw 91 via the nut screw pair, thereby switching between the rib-forming components 5. The use of the lead screw 91 and the nut screw pair effectively ensures the reliability of the movement of the switching moving seat 4 and the accuracy and reliability of the switching of the rib-forming components 5.

[0040] In this embodiment, the switching moving mechanism 9 is a linear drive, such as a motor, which drives the lead screw 91 to rotate around its own axis.

[0041] like Figure 3 and Figure 4 As shown, a mounting groove 41 is provided on the side of the switching moving seat 4 facing the molding moving seat 3. A guide rail seat 31 is installed on the end face of the molding moving seat 3 and mounted in the mounting groove 41. Guide rails 93 are installed on the upper and lower sides of the guide rail seat 31 respectively. A slider 92 that slides and is slidably mounted on the opposite wall of the mounting groove 41 is installed, forming a sliding mounting between the switching moving seat 4 and the molding moving seat 3.

[0042] In this embodiment, the guide rail seat 31, guide rail 93, and slider 92 are housed inside the mounting slot 41, thereby enabling the sliding of the switching moving seat 4 relative to the forming moving seat 3.

[0043] In this embodiment, steps can be set on the opposite wall of the mounting groove 41, so that the slider 92 and the guide rail seat 31 are accommodated and confined in the mounting groove 41 in the horizontal direction, which effectively ensures the reliability of relative sliding from a structural perspective.

[0044] like Figure 5 As shown, the structure of a single reinforcing rib assembly 5 is as follows: it includes a support 50 installed on the side of the switching movable seat 4, a through hole is provided on the support 50, a cylindrical pin seat 51 is coaxially fitted in the through hole, an end cap 53 is installed at one end of the pin seat 51, a shaft pin 54 is installed at the other end of the pin seat 51, an elastic element 52 is installed in the pin seat 51 located between the end cap 53 and the shaft pin 54, and the shaft pin 54 extends out of the support 50 and is arranged towards the pipe fitting 10; it also includes a limiting block 55 to prevent the shaft pin 54 from disengaging from the support 50.

[0045] During molding, as the molding moving seat 3 moves toward the lower clamping mold 6, the rib assembly 5 gradually approaches the end of the pipe fitting 10 until the end of the shaft pin 54 extends into the pipe opening of the pipe fitting 10. When the stepped surface of the shaft pin 54 abuts against the end of the pipe fitting 10, the elastic element 52 is compressed to play a buffering role, effectively avoiding hard contact between the shaft pin 54 and the pipe fitting 10 before molding.

[0046] At least one reinforcing rib assembly 5 is provided with a positioning component 20 below it. The positioning component 20 moves with the reinforcing rib assembly 5. The positioning pin at the end of the positioning component 20 is fitted into the hole of the fitting 12 on the pipe fitting 10. Thus, when the corresponding reinforcing rib assembly 5 performs the forming action on the pipe fitting 10, the fitting of the positioning component 20 and the fitting 12 effectively prevents the pipe fitting 10 from rotating on its own.

[0047] The number of rib assemblies 5 on both sides of the switching movable seat 4 is the same, and they are arranged one-to-one; thus, during the molding process, force can be applied simultaneously on both sides of the pipe 10, so that the pipe 10 is subjected to balanced force and the molding effect is guaranteed.

[0048] In this embodiment, the number of reinforcing ribs 5 can be set according to the molding quantity requirements of the annular protrusions 11 on the pipe fitting 10.

[0049] A lifting mechanism 61 is installed on the working platform 1, and the lower clamping mold 6 is installed on the lifting mechanism 61. The lifting mechanism 61 lifts the lower clamping mold 6 upward.

[0050] In this embodiment, by setting up the lifting mechanism 61, the continuous necking forming device can be connected in the production line. The pipe 10 is moved from the previous process to the continuous necking forming device via the conveyor line. The operation of the lifting mechanism 61 lifts the lower clamping mold 6, so that the pipe 10 is separated from the conveyor line and supported and limited on the lower clamping mold 6.

[0051] Of course, in actual operation, the lifting mechanism 61 can be used in conjunction to ensure that the space between the lower clamping mold 6 and the upper clamping mold 7 is large enough when feeding the pipe fitting 10 to the lower clamping mold 6, which facilitates the feeding operation and helps to ensure the safety of the operation.

[0052] In this embodiment, the lifting mechanism 61 adopts a conventional linear drive structure such as a cylinder, and with the help of the guide column structure, it can lift the lower clamping mold 6 upward relative to the working platform 1.

[0053] like Figure 7 As shown, the upper clamping mold 7 and the lower clamping mold 6 have accommodating holes on their opposing surfaces for clamping the pipe fitting 10; when the upper clamping mold 7 moves downward toward the lower clamping mold 6, the upper clamping mold 7 and the lower clamping mold 6 achieve reliable clamping of the pipe fitting 10.

[0054] It also includes an alignment mechanism 8, which drives the lower alignment block to move downwards and the side of the alignment block to fit against the end of the pipe fitting 10, thereby effectively ensuring the accuracy and consistency of the axial position of the pipe fitting 10 before forming.

[0055] In this embodiment, the alignment mechanism 8 can be a linear drive power, including a cylinder, which drives the alignment block to move downward to align the pipe 10, or drives the alignment block to move upward away from the pipe 10 after alignment.

[0056] The molding method of this invention is as follows:

[0057] To form the pipe fitting 10 into Figure 6 The following explanation will be based on the finished product.

[0058] Figure 6 The pipe fitting 10 has three annular protrusions 11 formed at both ends after molding, and a fitting 12 is also fitted between the two annular protrusions 11 on the inner side of each end.

[0059] During molding, the alignment mechanism 8 moves to drive the alignment block down to the preset position, and the tube 10 before molding is placed on the lower clamping mold 6. One end of the tube 10 is positioned by fitting against the side of the alignment block. After the loading is completed, the alignment mechanism 8 moves in the opposite direction and the alignment block moves away from the tube 10.

[0060] The two forming linear power mechanisms 2 are activated, driving the forming moving seats 3 to move towards the lower clamping mold 6; the corresponding rib assemblies 5 approach and apply force to both ends of the pipe fitting 10, causing the innermost annular protrusions 11 to be formed at both ends of the pipe fitting 10; the forming linear power mechanism 2 drives the rib assemblies 5 away from the pipe fitting 10 via the forming moving seats 3.

[0061] Mounting parts 12 at the annular protrusions 11 at both ends of the pipe fitting 10; switch the moving mechanism 9 to work, the lead screw 91 rotates, driving the switching moving seat 4 to move relative to the forming moving seat 3, thereby switching another set of rib assemblies 5 to face both ends of the pipe fitting 10; repeat the action of the two sides forming linear power mechanism 2 to form a second annular protrusion 11 at both ends of the pipe fitting 10.

[0062] Repeat the action of switching the moving mechanism 9, and then switch a set of rib assemblies 5 to face both ends of the pipe fitting 10; repeat the action of the two-sided forming linear power mechanism 2 to form the third annular protrusion 11 at both ends of the pipe fitting 10, thus completing the forming of the pipe fitting 10.

[0063] This invention enables the forming of multiple annular protrusions in a single clamping of a pipe fitting, greatly improving forming efficiency and ensuring processing accuracy.

[0064] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0065] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A continuous pipe fitting necking forming device, comprising a working platform (1), characterized in that: The working platform (1) is equipped with a lower clamping mold (6) in the middle, and an upper clamping mold (7) is arranged directly above the lower clamping mold (6). The upper clamping mold (7) is driven by the clamping mechanism (71) to move toward the lower clamping mold (6). The upper clamping mold (7) and the lower clamping mold (6) clamp the pipe fitting (10) to be formed. Forming moving seats (3) are slidably installed on the working platform (1) on both sides of the lower clamping mold (6). The forming moving seats (3) are driven by the forming linear power mechanism (2) to move toward or away from the lower clamping mold (6). Switching moving seats (4) are slidably installed on the opposite faces of the forming moving seats (3) on both sides. The moving directions of the switching moving seats (4) on both sides are parallel to each other. Multiple rib assemblies (5) are installed at intervals along the moving direction of the switching moving seats (4). The corresponding rib assemblies (5) on the switching moving seats (4) on both sides are directly opposite the two ends of the pipe fitting (10).

2. The continuous pipe fitting necking forming device as described in claim 1, characterized in that: The forming moving seat (3) has a support arm extending along its own moving direction. A lead screw (91) is rotatably installed between the support arms. A switching moving mechanism (9) is poweredly connected to the end of the lead screw (91). The switching moving seat (4) is fitted onto the lead screw (91) via a nut screw pair.

3. The continuous pipe fitting necking forming device as described in claim 1, characterized in that: A fitting groove (41) is provided on the side of the switching moving seat (4) facing the molding moving seat (3). A guide rail seat (31) is installed on the end face of the molding moving seat (3) and fitted into the fitting groove (41). Guide rails (93) are installed on the upper and lower sides of the guide rail seat (31). A slider (92) is installed on the opposite wall of the fitting groove (41) and slidably fitted with the corresponding guide rail (93), thus forming a sliding fit between the switching moving seat (4) and the molding moving seat (3).

4. The continuous pipe fitting necking forming device as described in claim 1, characterized in that: The structure of a single reinforcing bar assembly (5) is as follows: it includes a support (50) installed on the side of the switching moving seat (4), a through hole is provided on the support (50), a cylindrical pin seat (51) is coaxially fitted in the through hole, an end cap (53) is installed at one end of the pin seat (51), a shaft pin (54) is installed at the other end of the pin seat (51), an elastic element (52) is installed in the pin seat (51) located between the end cap (53) and the shaft pin (54), and the shaft pin (54) extends out of the support (50) and is arranged towards the pipe fitting (10); it also includes a limiting block (55) to prevent the shaft pin (54) from disengaging from the support (50).

5. The continuous necking forming device for pipe fittings as described in claim 1, characterized in that: At least one reinforcing bar assembly (5) is provided with a positioning component (20) below it. The positioning component (20) moves with the reinforcing bar assembly (5). The positioning pin at the end of the positioning component (20) is fitted into the hole of the fitting (12) on the pipe fitting (10).

6. The continuous pipe fitting necking forming device as described in claim 1, characterized in that: The number of reinforcing bar components (5) on both sides of the switching movable seat (4) is the same, and they are arranged in a one-to-one correspondence.

7. The continuous necking forming device for pipe fittings as described in claim 1, characterized in that: The working platform (1) is equipped with a lifting mechanism (61), and the lower clamping mold (6) is installed on the lifting mechanism (61). The lifting mechanism (61) lifts the lower clamping mold (6) upward.

8. The continuous necking forming device for pipe fittings as described in claim 1, characterized in that: The upper clamping mold (7) and the lower clamping mold (6) have accommodating holes on their opposite surfaces for clamping the pipe fitting (10).

9. The continuous pipe necking forming device as described in claim 1, characterized in that: It also includes an alignment mechanism (8), which drives the lower alignment block downwards and the side of the alignment block is attached to the end of the pipe fitting (10).

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