Double-station pipe end forming device

Abstract

The utility model discloses a kind of double-station pipe end forming devices, including clamping mechanism, for clamping the middle part of pipe fitting;Clamping mechanism is respectively provided with first forming mechanism and second forming mechanism along the both sides of pipe fitting axial direction;First forming mechanism has first driving device, can be controlledly switched between first station and second station;When being in first station, first forming mechanism provides axial support for the corresponding end of pipe fitting;When being in second station, first forming mechanism performs axial extrusion forming to the corresponding end of pipe fitting;When first forming mechanism is in first station, second forming mechanism moves close to the other end of pipe fitting and applies axial extrusion force to it;When first forming mechanism is in second station, second forming mechanism provides axial limit to the other end of pipe fitting.The utility model can be simultaneously or alternately formed to the both ends of pipe fitting, improves processing efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of pipe end forming technology, and in particular to a dual-station pipe end forming device. Background Technology

[0002] In the field of pipe processing, it is often necessary to perform shaping processing on the ends of pipe fittings, such as necking, flaring, flanging, and upsetting. Current technologies typically employ a single-station processing method, meaning that only one end of the pipe fitting can be processed at a time, resulting in low processing efficiency. If both ends of the pipe fitting need to be processed, re-clamping or changing equipment is required, which not only increases operation time but also easily introduces errors due to secondary positioning, affecting processing accuracy and product consistency. Therefore, there is an urgent need for equipment capable of simultaneously and efficiently shaping both ends of pipe fittings. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a dual-station pipe end forming device, which can simultaneously or alternately form both ends of the pipe, thereby improving processing efficiency and accuracy.

[0004] Technical Solution: To achieve the above objectives, this utility model provides a dual-station pipe end forming device, including a clamping mechanism mounted on a frame for clamping and fixing the middle part of a pipe fitting. The clamping mechanism has a first forming mechanism and a second forming mechanism respectively arranged on both sides along the axial direction of the pipe fitting, corresponding to both ends of the pipe fitting. The first forming mechanism has a first driving device and can be controllably switched between the first and second stations. When in the first station, the first forming mechanism provides axial support to the corresponding end of the pipe fitting. When in the second station, the first forming mechanism performs axial extrusion forming on the corresponding end of the pipe fitting. The second forming mechanism has a second driving device and can cooperate with the first forming mechanism. When the first forming mechanism is in the first station, the second forming mechanism moves closer to the other end of the pipe fitting and applies axial extrusion force to it. When the first forming mechanism is in the second station, the second forming mechanism provides axial limiting to the other end of the pipe fitting.

[0005] Furthermore, the second forming mechanism includes a second forming mold, the second forming mold including a guide sleeve, the guide sleeve being coaxially arranged with the fixed pipe fitting, one end of which is provided with an insertion port for inserting the end of the pipe fitting; a clamping component is provided at the insertion port for radially clamping and fixing the end of the pipe fitting after it is inserted into place; a pushing block is provided on the side of the clamping component away from the insertion port, the pushing block being able to slide axially to apply extrusion force to the clamped end of the pipe fitting.

[0006] Furthermore, the clamping component has a molding cavity on the end face opposite to the pressing block, which is used to form a preset structure at the end of the compressed tube.

[0007] Furthermore, the end face of the push block is provided with an axial insertion hole, the inner diameter of which is adapted to the outer diameter of the pipe fitting.

[0008] Furthermore, the clamping mechanism is provided with a first limiting surface on the side near the second forming mechanism; when the end face of the guide sleeve is in contact with the first limiting surface, both ends of the tube can be simultaneously in contact with the inner end face of the insertion hole of the push block and the supporting end face of the first forming mechanism.

[0009] Furthermore, the first forming mechanism includes a moving mechanism, a support component and a first forming mold mounted on the moving mechanism; the moving mechanism serves as the first driving device, used to drive the support component and the first forming mold to alternately align with the end of the pipe.

[0010] Furthermore, the first forming mold is a detachable necking mold, or an extrusion molding mold with the same structure as the second forming mold.

[0011] Furthermore, the clamping mechanism is provided with a second limiting surface on the side near the first forming mechanism, which is used to limit the supporting position of the supporting component when the first forming mechanism performs axial extrusion forming on the pipe.

[0012] Beneficial Effects: This utility model discloses a dual-station pipe end forming device. By setting up a first forming mechanism and a second forming mechanism on both sides of the clamping mechanism, and configuring their alternating or synchronous actions, it achieves continuous or simultaneous processing of both ends of the pipe fitting in a single clamping, significantly improving production efficiency. By setting up a first limiting surface and a second limiting surface, and cooperating with supporting components, guide sleeves, and other components, the axial positioning accuracy of the pipe fitting during processing is ensured, guaranteeing product consistency and processing quality. The detachable design of the first forming mold and the special structure of the second forming mold enable this pipe end forming machine to adapt to various pipe end forming processes (such as necking, flaring, forming specific shapes, etc.), demonstrating strong versatility. The movement and actions of each mechanism can be controlled by a program, easily achieving automated production and reducing the intensity and error of manual operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the dual-station tube end forming device of this utility model;

[0014] Figure 2 for Figure 1 A partially enlarged structural diagram of the second molding die section. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] As attached Figure 1 The dual-station tube end forming device includes a frame (not shown), a clamping mechanism 1, a first forming mechanism 3, and a second forming mechanism 4.

[0017] The clamping mechanism 1 is mounted on the frame and is used to firmly clamp the middle part of the pipe fitting 2 during processing. The clamping mechanism 1 includes a fixed clamping block and a movable clamping block that moves closer to or further away from it. The clamping surfaces of the two clamping blocks are respectively provided with semi-circular arc-shaped grooves that are adapted to the outer diameter of the pipe fitting. The two clamping blocks can be clamped vertically or horizontally.

[0018] On both sides of the clamping mechanism 1, that is, along the axial direction of the pipe fitting 2, a first forming mechanism 3 and a second forming mechanism 4 are respectively arranged, and the first forming mechanism 3 and the second forming mechanism 4 correspond to the two ends of the pipe fitting 2 respectively.

[0019] The first forming mechanism 3 has a first driving device and can be switched between a first station and a second station in a controlled manner; when in the first station, the first forming mechanism 3 provides axial support for the corresponding end of the pipe 2; when in the second station, the first forming mechanism 3 performs axial extrusion forming on the corresponding end of the pipe 2.

[0020] The first forming mechanism 3 includes a moving mechanism 31, a support component 32 and a first forming mold 33 mounted on the moving mechanism 31; the moving mechanism 31 serves as the first driving device, used to drive the support component 32 and the first forming mold 33 to alternately align with the end of the pipe 2, and to drive them to move along the axial direction of the pipe after alignment to achieve docking with the pipe end, so as to perform the corresponding support function or extrusion forming function.

[0021] The moving mechanism 31 can be a linear drive device such as a hydraulic cylinder, a pneumatic cylinder, or a slide table driven by a servo motor. The supporting component 32 and the first forming mold 33 are installed side-by-side or at a certain interval on the positioning movable component (such as...) of the moving mechanism 31. Figure 1 On the horizontal slide shown, by moving radially along the end face of the pipe fitting, the two can be alternately aligned with the right end of the pipe fitting 2 (taking the position shown as an example). After alignment, the entire alignment moving part, the support part 32 and the first forming mold 33 are driven together by a hydraulic cylinder or air cylinder to approach the end of the pipe fitting.

[0022] The support component 32 is mainly used to provide support for the right end of the pipe fitting 2 when the second forming mechanism 4 is working. The first forming mold 33 is used to form the right end of the pipe fitting 2.

[0023] The first forming mold 33 is a detachable necking mold, or an extrusion molding mold with the same structure as the second forming mold 5. The detachable design of the first forming mold and the special structure of the second forming mold enable the pipe end machine to adapt to various pipe end forming processes (such as necking, flaring, forming specific shapes, etc.), making it highly versatile.

[0024] When the first forming mold 33 is a necking mold, preferably, the clamping mechanism 1 is provided with a second limiting surface on the side near the first forming mechanism 3, which is used to limit the support position of the support member 32 when the first forming mechanism 3 performs axial extrusion forming on the pipe 2. This can accurately limit the axial extrusion stroke of the necking mold, ensure the necking forming accuracy of the pipe end, and prevent overpressure from causing deformation or wear of other parts of the pipe.

[0025] The second forming mechanism 4 has a second driving device and can work in coordination with the first forming mechanism 3. When the first forming mechanism 3 is in the first working position, the second forming mechanism 4 moves closer to the other end of the pipe 2 and applies axial extrusion force to it. When the first forming mechanism 3 is in the second working position, the second forming mechanism 4 provides axial limiting to the other end of the pipe 2.

[0026] The second forming mechanism 4 includes a second forming mold 5, which includes a guide sleeve 51. The guide sleeve 51 is coaxially arranged with the fixed pipe fitting 2, and one end of the guide sleeve 51 is provided with an insertion port for inserting the end of the pipe fitting 2. The insertion port is provided with a clamping component 52 for radially clamping and fixing the end of the pipe fitting 2 after it is inserted into place. The clamping component 52 can be a hydraulic or pneumatic gripper, spring chuck, or other structure, which can radially retract and clamp the pipe fitting 2 after the end of the pipe fitting 2 is inserted into place (for example, when it contacts the push block 53).

[0027] The clamping component 52 is provided with a pushing block 53 on the side away from the insertion port. The pushing block 53 can be driven by an independent driving device (such as a hydraulic cylinder) so that it can slide left and right along the axial direction of the guide sleeve 51 to apply a squeezing force to the end of the clamped pipe 2.

[0028] The clamping component 52 and the pressing block 53 have mating molding cavities on their opposite end faces to form a preset structure at the end of the compressed pipe 2. For example, a notch structure needs to be machined at one end of the pipe 2, as shown in the attached figure. Figure 2As shown, the mold groove is divided into two parts by the maximum radius of the pier opening, which are respectively set on the end faces of the clamping component 52 and the pushing block 53. Since the outer diameter of the pier opening is significantly larger than the outer diameter of the original pipe, the mold can be easily demolded and unloaded by opening the clamping component 52 during material unloading, avoiding complicated unloading operations and improving processing efficiency.

[0029] Based on the above structure, when feeding pipe fittings, the position of the pipe fittings can be determined first by another positioning mechanism, and then transferred to the position of the clamping mechanism by a mechanical arm clamping and translating. This allows the pipe fittings to be handed over in cooperation with the clamping mechanism, thus ensuring the accuracy of subsequent pipe fitting forming.

[0030] Preferably, the end face of the pushing block 53 is provided with an axial insertion hole, the inner diameter of which is adapted to the outer diameter of the pipe 2. Furthermore, the clamping mechanism 1 has a first limiting surface on the side near the second forming mechanism 4; when the end face of the guide sleeve 51 is in contact with the first limiting surface, both ends of the pipe 2 can simultaneously engage with the inner end face of the insertion hole of the pushing block 53 and the supporting end face of the first forming mechanism 3, respectively. This assists in completing the loading and positioning of the pipe, eliminating the need for an additional positioning mechanism to locate the clamping position of the pipe. During the loading of the pipe 2, a robotic arm is used to clamp the pipe and transport it to the clamping mechanism for handover, but precise control of the robotic arm's clamping position is not required; it is sufficient to ensure that the axial offset of the pipe is small after being received by the clamping mechanism 1. Then, with the clamping mechanism 1 clamping the middle of the pipe fitting 2, the second forming mold 5 is moved to the right as a whole until the corresponding end of the pipe fitting 2 is inserted into the insertion hole of the push block 53. At this time, the clamping mechanism is slightly loosened from radial clamping of the pipe fitting, and the second forming mold 5 is moved to the right as a whole until the end face of the guide sleeve 51 is in contact with the first limiting surface on the clamping mechanism 1. During this process, the support component 32 moves synchronously closer to the pipe end. After the guide sleeve 51 is in contact with the first limiting surface, the support component 32 pushes the pipe fitting 2 axially to slide to the other end and contact the inner end face of the insertion hole. Finally, the clamping mechanism 1 and the clamping component 52 synchronously radially clamp the pipe fitting, thereby achieving precise positioning and clamping of the pipe fitting 2.

[0031] The specific work process is as follows:

[0032] During the preparation stage, clamp the pipe fittings into place as described above.

[0033] First processing stage (forming the left end of the pipe):

[0034] The cylinder maintains the support member 32 in contact with the left end of the tube 2. Then, the pressing block 53 moves to the right and approaches the clamping member 52 under the driving action, applying a strong axial compressive force to the left end of the tube 2. Under the compressive force, the left end of the tube 2 undergoes plastic deformation, and its material is squeezed into the space defined by the forming structure on the end face of the clamping member 52 and the pressing block 53 (as shown in the attached figure). Figure 2 Within the annular space shown, a preset shape (such as a gate structure) is formed. After completion, the pushing block 53 retracts or remains in a pressed state, and the clamping component 52 releases or remains in a clamped state.

[0035] Second processing stage (forming the left end of the pipe):

[0036] The moving mechanism 31 moves, driving the support component 32 to retract, and at the same time driving the first forming mold 33 to move to a position aligned with the left end of the tube 2.

[0037] The second forming mold 5 operates as follows: At this time, the second forming mold 5 can be used as a fixed stop. Its pressing block 53 can be held in one position, or the clamping component 52 can clamp the left end of the pipe 2 again (or hold it), providing axial limit for the right end of the pipe 2.

[0038] Driven by a cylinder, the first forming mold 33 moves to the left, applying axial extrusion force to the right end of the pipe 2 to complete the forming process (e.g., necking) of the right end of the pipe 2. If the first forming mold 33 adopts the same structure as the second forming mold 5, its processing can be similar to the first processing stage.

[0039] After processing is completed, all moving parts are reset, clamping mechanism 1 is released, and the processed pipe fitting 2 is taken out.

[0040] Through the above process, the goal of performing different or the same forming processes on both ends of the pipe fitting in a single clamping is achieved, which is highly efficient and accurate in positioning.

[0041] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A dual-station tube end forming device, characterized in that: It includes a clamping mechanism (1), which is mounted on the frame and is used to clamp and fix the middle part of the pipe fitting (2); the clamping mechanism (1) is provided with a first forming mechanism (3) and a second forming mechanism (4) on both sides along the axial direction of the pipe fitting, and respectively corresponding to the two ends of the pipe fitting (2); The first forming mechanism (3) has a first driving device and can be switched between a first station and a second station in a controlled manner; when in the first station, the first forming mechanism (3) provides axial support for the corresponding end of the pipe (2); when in the second station, the first forming mechanism (3) performs axial extrusion forming on the corresponding end of the pipe (2); The second forming mechanism (4) has a second driving device and can work in coordination with the first forming mechanism (3); when the first forming mechanism (3) is in the first station, the second forming mechanism (4) moves closer to the other end of the pipe (2) and applies axial extrusion force to it; when the first forming mechanism (3) is in the second station, the second forming mechanism (4) provides axial limiting to the other end of the pipe (2).

2. The dual-station tube end forming device according to claim 1, characterized in that: The second forming mechanism (4) includes a second forming mold (5), which includes a guide sleeve (51). The guide sleeve (51) is coaxially arranged with the fixed pipe fitting (2), and one end of the guide sleeve (51) is provided with an insertion port for inserting the end of the pipe fitting (2). A clamping component (52) is provided at the insertion port for radially clamping and fixing the end of the pipe fitting (2) after it is inserted into place. A pushing block (53) is provided on the side of the clamping component (52) away from the insertion port. The pushing block (53) can slide axially to apply a squeezing force to the end of the clamped pipe fitting (2).

3. The dual-station tube end forming device according to claim 2, characterized in that: The clamping component (52) and the pressing block (53) are provided with matching molding cavities on their opposite end faces, which are used to form a preset structure at the end of the extruded tube (2).

4. The dual-station tube end forming device according to claim 3, characterized in that: The end face of the push block (53) is provided with an axial insertion hole, the inner diameter of which is adapted to the outer diameter of the pipe fitting (2).

5. The dual-station tube end forming device according to claim 4, characterized in that: The clamping mechanism (1) has a first limiting surface on the side near the second forming mechanism (4); when the end face of the guide sleeve (51) is in contact with the first limiting surface, both ends of the tube (2) can be in contact with the inner end face of the insertion hole of the push block (53) and the supporting end face of the first forming mechanism (3) at the same time.

6. The dual-station tube end forming device according to claim 2, characterized in that: The first forming mechanism (3) includes a moving mechanism (31), a support member (32) and a first forming mold (33) mounted on the moving mechanism (31); the moving mechanism (31) serves as the first driving device, used to drive the support member (32) and the first forming mold (33) to alternately align with the end of the pipe (2).

7. The dual-station tube end forming device according to claim 6, characterized in that: The first forming mold (33) is a detachable necking mold or an extrusion molding mold with the same structure as the second forming mold (5).

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