U-shaped pipe demoulding mechanism

Abstract

The utility model discloses a U-shaped pipe demolding mechanism which comprises a shell, a demolding chamber is arranged in the shell, a left module and a right module are arranged in the demolding chamber, at least one set of demolding assembly is arranged between the left module and the right module, and each demolding assembly comprises a U-shaped pipe core and a demolding block. The demolding block and an arc-shaped position core of the U-shaped pipe are concentrically arranged, a sliding shaft is arranged in the demolding chamber, the left mold block can slide leftwards along the sliding shaft to demold the left side of the U-shaped pipe, the right mold block can slide rightwards along the sliding shaft to demold the right side of the U-shaped pipe, and a mandrel is arranged at the position, corresponding to the axis of the demolding block, of the demolding chamber. The demolding block is fixedly connected with the mandrel and can rotate in the circumferential direction along with the mandrel so that the U-shaped pipe can be demolded from the U-shaped pipe core. The demolding mechanism is convenient to operate, and pipe fittings are not prone to being damaged.

Description

Technical Field

[0001] This utility model relates to the field of demolding technology, specifically a demolding mechanism for U-shaped pipe fittings. Background Technology

[0002] U-shaped pipe fittings, as common connectors in piping systems, are widely used in water supply and drainage, HVAC, and other fields. Their demolding mechanism after injection molding is a crucial factor affecting product quality and production efficiency. Traditional U-shaped pipe fitting demolding mechanisms often employ an integral bent core combined with a straight core puller. Typically, a hydraulic cylinder drives the straight core puller to be pulled out from both ends of the fitting, and then gears drive the bent core to rotate and release it. These mechanisms generally rely on a single ejection to complete demolding. When demolding the sidewalls of the U-shaped pipe fitting, if the molded U-shaped pipe fitting is not detached from the sidewall mold, directly ejecting it through the component can easily damage it. Furthermore, in continuous operation, it is impossible to manually detach the U-shaped pipe fitting from the sidewall mold. Traditional ejection demolding methods cannot meet the requirements, easily damage the fitting, and are inconvenient to operate. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a U-shaped pipe demolding mechanism to solve the problems mentioned in the background art, such as the complicated demolding process of traditional U-shaped pipes, easy damage to pipes, and inconvenience of operation.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a U-shaped tube demolding mechanism, comprising a housing, wherein a demolding chamber is provided in the housing, the demolding chamber having a left module and a right module, and at least one set of demolding components is provided between the left module and the right module, the demolding components including a U-shaped tube core and a demolding module, the demolding module being concentrically arranged with the arc-shaped core of the U-shaped tube, a sliding shaft being provided in the demolding chamber, the left module being able to slide to the left along the sliding shaft to demold the left side of the U-shaped tube, the right module being able to slide to the right along the sliding shaft to demold the right side of the U-shaped tube, a mandrel being provided in the demolding chamber corresponding to the axial center position of the demolding module, the demolding module being fixedly connected to the mandrel and being able to rotate circumferentially with the mandrel to demold the U-shaped tube from the U-shaped tube core.

[0005] As a further improvement of this utility model, a limiting groove is provided between the left module and the right module, and the detachable module can be engaged in the limiting groove. After the left module slides to the left and the right module slides to the right, the detachable module can disengage from the limiting groove.

[0006] As a further improvement of this utility model, the demolding module is provided with a baffle, which is used to abut against the block on the U-shaped tube, and the baffle pushes the block to demold along the length direction of the U-shaped tube core.

[0007] As a further improvement of this utility model, a through hole is provided on the detachment module, and the radial width of the through hole is greater than the radial width of the U-shaped tube.

[0008] As a further improvement of this utility model, two sets of demolding components are provided between the left module and the right module. The two sets of demolding components are arranged on the same horizontal line, and the left module and the right module can simultaneously demold the left and right sides of the U-shaped tube on the two sets of demolding components.

[0009] Compared with existing technologies, this utility model provides a U-shaped tube demolding mechanism with the following advantages: The demolding chamber inside the shell provides a stable installation and operating space for the left module, right module, and demolding assembly, ensuring the stability of the overall mechanism. By setting a sliding shaft, the left module can move to the left along it, and the right module can move to the right along it, realizing demolding of both sides of the U-shaped tube, effectively protecting the integrity of the tube's sidewall and improving the product qualification rate. In the demolding assembly, the demolding module and the arc-shaped core of the U-shaped tube are concentrically set, and the core shaft drives the demolding module to rotate circumferentially, which can adapt to the arc-shaped contour of the U-shaped tube, solving the technical pain points of difficult demolding and easy deformation of the arc-shaped part, and ensuring the forming accuracy of the tube. The overall demolding action is smooth and continuous, without the need for complex manual operation, which reduces the labor intensity of operators, improves demolding efficiency, meets the needs of mass production, and has a simple structure. Attached Figure Description

[0010] Figure 1 This is a perspective view of the present utility model;

[0011] Figure 2 This is a diagram of the internal structure of the present invention;

[0012] Figure 3 This is a cross-sectional view of the demolding chamber of this utility model;

[0013] Figure 4 This is a perspective view of the modular design of this utility model;

[0014] Figure 5 This is a structural diagram of the left module of this utility model.

[0015] Reference numerals: 1. Shell; 2. Demolding chamber; 3. Left module; 4. Right module; 5. Demolding assembly; 6. U-shaped core; 7. Demolding module; 8. Sliding shaft; 9. Mandrel; 10. Limiting groove; 11. Edge guard; 12. Stop block; 13. Through hole. Detailed Implementation

[0016] As shown in the figure, the present invention provides a U-shaped tube demolding mechanism to achieve the above objectives. The mechanism includes a housing 1, a demolding chamber 2 in the housing 1, a left module 3 and a right module 4 in the demolding chamber 2, and at least one demolding assembly 5 between the left module 3 and the right module 4. The demolding assembly 5 includes a U-shaped tube core 6 and a demolding module 7. The demolding module 7 is concentrically arranged with the arc-shaped core of the U-shaped tube. A sliding shaft 8 is provided in the demolding chamber 2. The left module 3 can slide to the left along the sliding shaft 8 to demold the left side of the U-shaped tube, and the right module 4 can slide to the right along the sliding shaft 8 to demold the right side of the U-shaped tube. A mandrel 9 is provided in the demolding chamber 2 at the axial center position corresponding to the demolding module 7. The demolding module 7 is fixedly connected to the mandrel 9 and can rotate circumferentially with the mandrel 9 to demold the U-shaped tube from the U-shaped tube core 6.

[0017] In this implementation, the shell 1 has a pre-reserved demolding chamber 2 for demolding the U-shaped tube. A left module 3 and a right module 4 are symmetrically arranged inside the chamber. The left module 3 and right module 4 have identical structures and are arranged opposite each other. At least one demolding assembly 5 is provided between them. The demolding assembly 5 consists of a U-shaped core 6 and a demolding module 7. The U-shaped core 6 is adapted to the inner shape of the U-shaped tube to be demolded, supporting the U-shaped tube during molding. The demolding module 7 is fitted to the arc-shaped section of the U-shaped core 6 and is concentrically positioned with the arc-shaped core of the U-shaped tube, ensuring uniform force during demolding and avoiding damage to the U-shaped tube. A sliding shaft 8 is horizontally installed through the demolding chamber 2 in the left-right direction. The left module 3 is fitted onto the left side of the sliding shaft 8 with a clearance fit, allowing it to slide smoothly to the left along the sliding shaft 8 to achieve demolding separation of the left side of the U-shaped tube. Similarly, the right module 4 is fitted onto the right side of the sliding shaft 8 and can slide to the right along the sliding shaft 8 to complete the demolding separation of the right side of the U-shaped tube. A mandrel 9 is vertically fixed at the axial center position of the demolding chamber 2 corresponding to the demolding module 7. The mandrel 9 is rotatably connected to the housing 1. The demolding module 7 is fixedly connected to the mandrel 9 by bolts. The two move synchronously. After the left module 3 and right module 4 complete the demolding of the left and right sides, the mandrel 9 rotates circumferentially around its own axis, driving the demolding module 7 to rotate synchronously. Since the demolding module 7 is concentric with the arc position of the U-shaped tube, the demolding module 7 can smoothly push the U-shaped tube during the rotation, so that the U-shaped tube can be completely separated from the U-shaped tube core 6. The whole demolding process is continuous and stable, with good practicality and operability.

[0018] As an improved specific implementation, a limiting groove 10 is provided between the left module 3 and the right module 4. The detachable module 7 can be engaged in the limiting groove 10. After the left module 3 slides to the left and the right module 4 slides to the right, the detachable module 7 can disengage from the limiting groove 10.

[0019] In this design, semi-circular limiting grooves are provided at corresponding positions on the right end face of the left module 3 and the left end face of the right module 4. When the left module 3 and right module 4 are brought together for mold closing, the two semi-circular limiting grooves are joined to form a complete limiting groove 10. The size of the limiting groove 10 is adapted to the shape of the ejector module 7, allowing the ejector module 7 to be engaged in the limiting groove 10 for positioning and fixation. During mold closing and forming, the limiting groove 10 limits the ejector module 7, preventing displacement during the U-shaped tube forming process, ensuring the forming accuracy of the U-shaped tube and avoiding dimensional deviations. When demolding is required, the left module 3 slides to the left along the sliding shaft 8, and the right module 4 slides to the right along the sliding shaft 8. At this time, the left module 3 and right module 4 separate, and the limiting groove 10 formed by the joint disassembles. The ejector module 7 loses the constraint of the limiting groove 10 and can move freely. After the left module 3 and right module 4 are completely detached from the left and right sides of the U-shaped tube, the mandrel 9 drives the demolding module 7 to rotate circumferentially, pushing the U-shaped tube to be demolded from the U-shaped tube core 6. The setting of the limiting groove 10 ensures the molding accuracy without affecting the smoothness of the demolding operation.

[0020] As an improved specific implementation, the demolding module 7 is provided with a baffle 11, which is used to abut against the block 12 on the U-shaped tube. The baffle 11 pushes the block 12 to demold along the length direction of the U-shaped tube core 6.

[0021] In this design, a retaining edge 11 is integrally formed on the inner wall of the demolding module 7 along the length of the U-shaped core 6. The height of the retaining edge 11 matches the height of the pre-set stop block 12 on the U-shaped tube, and its position corresponds to the position of the stop block 12 after the U-shaped tube is formed. This retaining edge 11 is used to abut against the stop block 12 on the U-shaped tube during demolding. During mold closing, the U-shaped core 6 supports the formation of the U-shaped tube, and the retaining edge 11 is set against the outer wall of the U-shaped tube, without affecting the forming quality of the U-shaped tube. During the demolding operation, the left module 3 is first controlled to slide to the left along the sliding shaft 8, separating from the left end of the U-shaped tube, and the right module 4 slides to the right along the sliding shaft 8, separating from the right end of the U-shaped tube, thus completing the initial demolding of the left and right sides of the U-shaped tube. Subsequently, the mandrel 9 drives the demolding module 7 to rotate circumferentially. The retaining edge 11 on the demolding module 7 rotates synchronously, forming contact with the stop block 12 on the U-shaped tube. As the demolding module 7 continues to rotate, the retaining edge 11 generates a pushing force on the stop block 12 along the length direction of the U-shaped tube core 6, pushing the U-shaped tube slowly along the length direction of the U-shaped tube core 6, gradually separating it from the U-shaped tube core 6, thus achieving complete demolding. The retaining edge 11 enhances the pushing force during demolding, ensuring a smooth demolding process for the U-shaped tube and avoiding jamming.

[0022] As an improved specific implementation, a through hole 13 is provided on the module 7, and the radial width of the through hole 13 is greater than the radial width of the U-shaped tube.

[0023] In this design, a through hole 13 is provided in the middle of the demolding module 7, perpendicular to the mandrel 9. The shape of the through hole 13 matches the cross-sectional shape of the U-shaped tube, and the radial width of the through hole 13 is greater than the radial width of the U-shaped tube, leaving a reasonable demolding gap to ensure that the U-shaped tube can pass smoothly through the through hole 13 during demolding, avoiding problems such as jamming and scratching. The through hole 13 passes through the upper and lower ends of the demolding module 7, corresponding to the position of the U-shaped tube core 6. When the U-shaped tube is formed on the U-shaped tube core 6, the arc-shaped section of the U-shaped tube passes through the through hole 13, and the demolding module 7 is set to fit against the outer wall of the U-shaped tube, without affecting the forming of the U-shaped tube. During the demolding operation, the left module 3 slides to the left and the right module 4 slides to the right. After demolding the left and right sides of the U-shaped tube, the mandrel 9 drives the demolding module 7 to rotate circumferentially. During the rotation of the demolding module 7 around the mandrel 9, since the radial width of the through hole 13 is greater than the radial width of the U-shaped tube, the inner wall of the through hole 13 can contact the outer wall of the U-shaped tube. Under the push of the demolding module 7, it smoothly separates from the U-shaped tube core 6.

[0024] As an improved specific implementation, two sets of demolding components 5 are provided between the left module 3 and the right module 4. The two sets of demolding components 5 are arranged on the same horizontal line, and the left module 3 and the right module 4 can demold the left and right sides of the U-shaped tube on the two sets of demolding components 5 simultaneously.

[0025] In implementation, two sets of demolding components 5 are horizontally parallel and arranged between the left module 3 and the right module 4. These two sets of components are aligned horizontally, have identical structures, and are symmetrically distributed on both sides of the sliding shaft 8. This ensures that the left module 3 and right module 4 can simultaneously demold the U-shaped tubes on the two sets of demolding components 5, improving demolding efficiency. Each set of demolding components 5 includes a U-shaped core 6 and a demolding module 7. The demolding module 7 is concentrically positioned with the corresponding arc-shaped core of the U-shaped tube. The U-shaped cores 6 of the two sets of demolding components 5 are of the same specification, allowing simultaneous molding and demolding of two U-shaped tubes of the same specification. The sliding shaft 8 in the demolding chamber 2 passes through both sides of the two sets of demolding components 5. The left module 3 and right module 4 cover the left and right sides of the two sets of demolding components 5, respectively. The left module 3 corresponds to the left side of the two sets of demolding components 5, and the right module 4 corresponds to the right side of the two sets of demolding components 5. During mold closing and forming, the two U-shaped tubes are respectively formed on the U-shaped tube cores 6 of the two sets of demolding components 5. During demolding, the left module 3 is controlled to slide to the left along the sliding shaft 8, and simultaneously detaches from the left end of the two sets of U-shaped tubes. The right module 4 slides to the right along the sliding shaft 8, and simultaneously detaches from the right end of the two sets of U-shaped tubes. Subsequently, the demolding chamber 2 is equipped with a mandrel 9 corresponding to the axial center position of each set of demolding modules 7. The two mandrels 9 can be rotated synchronously in the circumferential direction by two motors, driving the two sets of demolding modules 7 to rotate synchronously, so that the two U-shaped tubes are demolded from their respective U-shaped tube cores 6 at the same time.

[0026] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A demolding mechanism for U-shaped tube fittings, characterized in that, The device includes a housing, within which a demolding chamber is provided. The demolding chamber has a left module and a right module. At least one demolding assembly is provided between the left and right modules. The demolding assembly includes a U-shaped core and a demolding module. The demolding module is concentrically arranged with the arc-shaped core of the U-shaped tube. A sliding shaft is provided in the demolding chamber. The left module can slide to the left along the sliding shaft to demold the left side of the U-shaped tube, and the right module can slide to the right along the sliding shaft to demold the right side of the U-shaped tube. A mandrel is provided in the demolding chamber corresponding to the axial center position of the demolding module. The demolding module is fixedly connected to the mandrel and can rotate circumferentially with the mandrel to demold the U-shaped tube from the U-shaped core.

2. The U-shaped tube demolding mechanism according to claim 1, characterized in that, A limiting groove is provided between the left module and the right module. The detachable module can be engaged in the limiting groove. After the left module slides to the left and the right module slides to the right, the detachable module can disengage from the limiting groove.

3. The U-shaped tube demolding mechanism according to claim 1, characterized in that, The demolding module is provided with a baffle, which is used to abut against the block on the U-shaped tube. The baffle pushes the block to demold along the length of the U-shaped tube core.

4. The U-shaped tube demolding mechanism according to claim 1, 2, or 3, characterized in that, The detachable module has a through hole, and the radial width of the through hole is greater than the radial width of the U-shaped tube.

5. The U-shaped tube demolding mechanism according to claim 1, characterized in that, Two sets of demolding components are provided between the left module and the right module. The two sets of demolding components are arranged on the same horizontal line. The left module and the right module can simultaneously demold the left and right sides of the U-shaped tube on the two sets of demolding components.

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