Anti-deformation elbow forming device
By introducing adjustment and auxiliary structures into the elbow forming device, the mold can be easily disassembled and positioned, solving the problem of cumbersome mold replacement, improving production efficiency and positioning accuracy, and reducing labor intensity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU LONGSHAN PIPE FITTINGS CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-16
Smart Images

Figure CN224359197U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elbow forming devices, and in particular to an elbow forming device that prevents deformation. Background Technology
[0002] Elbow forming equipment refers to specialized mechanical equipment or production lines used to manufacture elbow fittings for use in piping systems. Anti-deformation elbow forming equipment refers to inserting a bendable multi-ball mandrel into the pipe to support the pipe wall behind the bending point, preventing wrinkling on the inside and excessive ellipticization of the cross-section, thus achieving the purpose of preventing deformation.
[0003] Existing technologies, such as the utility model patent with publication number CN220499929U, disclose an elbow pressing and forming device. This patent includes a device body, a base plate installed at the bottom of the device body, a set of controllers installed on one side of the base plate, a set of worktables installed at the top of the base plate, and a set of templates installed at the top of the worktables. The templates have a set of mounting grooves. By setting a telescopic rod and a spring, the elbow tube to be shaped and pressed can be ejected after the extrusion plate separates from the template, thus eliminating the need for manual demolding, improving work efficiency, reducing the labor intensity of workers, and making it more convenient to use. By setting a second hydraulic telescopic rod, a sliding rod, and an elbow extrusion mandrel, the elbow extrusion mandrel can be pushed into the inside of the elbow tube to be shaped and processed during pressing, so that it fits the curvature of the mold cavity better, avoiding extrusion deformation, thus ensuring product quality and avoiding economic losses.
[0004] The inventors discovered the following problems in the process of using the anti-deformation elbow forming device in their daily work: pipe fittings of different specifications or shapes require frequent replacement of the corresponding forming molds. In existing equipment, the molds are usually directly fixed to the machine workbench or a simple base by multiple bolts. When changing the mold, it is necessary to loosen and tighten a large number of bolts one by one. The operation process is extremely time-consuming and labor-intensive, which seriously affects production efficiency. Summary of the Invention
[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as cumbersome mold replacement, low efficiency, and difficulty in ensuring positioning accuracy.
[0006] To solve the above-mentioned technical problems, this utility model provides a deformation-resistant elbow forming device, comprising: a machine body and an adjusting structure. A stamping device is installed on the upper end of the machine body. A mold is fixedly connected to the surface of the machine body via the adjusting structure. A pipe fitting is abutted against the upper surface of the mold. A multi-ball mandrel is slidably connected to the inner wall of the pipe fitting. The adjusting structure is provided on the surface of the machine body. The adjusting structure includes a base, which is fixedly connected to the machine body. The upper surface of the base abuts against the mold. A first adjusting groove and a second adjusting groove are formed on the upper surface of the base. A bidirectional screw is rotatably connected to the inner wall of both the first and second adjusting grooves. A disc is fixedly connected to one end of the bidirectional screw. A plurality of circular holes are formed on the arc surface of the disc. A handle is slidably connected to the inner wall of one of the circular holes. Two clamping plates are threadedly connected to the arc surface of the bidirectional screw. The clamping plates are slidably connected to the inner wall of the first or second adjusting groove.
[0007] The effect achieved by the above components is to use clamping plates to hold and position the mold around its perimeter, allowing for easy assembly and disassembly of the mold from the machine body, thereby improving the efficiency of mold maintenance operations.
[0008] Preferably, a plurality of pulleys are rotatably connected to both sides of the clamping plate.
[0009] The effect achieved by the above components is that the pulleys significantly reduce the friction of the clamping plate when it moves in the adjustment groove, making the movement of the clamping plate smoother.
[0010] Preferably, an anti-slip pad, which is a rubber pad, is fixedly connected to the surface of the clamping plate.
[0011] The effect achieved by the above components is that the rubber anti-slip pad increases the friction between the clamping plate and the side of the mold, ensuring a firm and reliable clamping.
[0012] Preferably, the inner walls of the first and second adjustment grooves are fixedly connected with a plurality of sliding rods, and two sliding grooves are opened on both sides of the clamping plate, with the inner walls of the sliding grooves slidably connected to the sliding rods.
[0013] The effect achieved by the above components is that the sliding rod cooperates with the sliding groove on the clamping plate to provide precise linear guidance for the movement of the clamping plate and improve the stability of the clamping plate during movement.
[0014] Preferably, an auxiliary structure is provided on one side of the machine body. The auxiliary structure includes a storage slot, which is formed on the machine body. An auxiliary frame is slidably connected to the inner wall of the storage slot. A rotating shaft is fixedly connected to the inner wall of the auxiliary frame. A clamping plate is rotatably connected to the arc surface of the rotating shaft. A coil spring is sleeved on the arc surface of the rotating shaft. The two ends of the coil spring are fixedly connected to the clamping plate and the auxiliary frame, respectively. A transport vehicle is slidably connected to the surface of the auxiliary frame, and the transport vehicle is engaged with the clamping plate.
[0015] The effects achieved by the above components are as follows: by using the pallet and auxiliary frame together, the transport vehicle and the equipment body can be quickly and firmly connected. With the help of the transport vehicle, it is convenient for users to transport and manage pipes in batches, reducing labor intensity. The pallet and auxiliary frame can be stored in the storage slot, which is highly practical.
[0016] Preferably, a push handle is fixedly connected to one side of the transport vehicle.
[0017] The effect achieved by the above components is that the push handle makes it easier for operators to push the transport vehicle, making the handling process more labor-saving and flexible.
[0018] Preferably, the cross-section of the card plate is semi-elliptical.
[0019] The effect achieved by the above components is that the semi-elliptical cross-section design gives the pallet a smoother profile during rotation, making it easier to slide into the clamping part of the transport vehicle.
[0020] Compared with related technologies, the deformation-resistant elbow forming device provided by this utility model has the following beneficial effects:
[0021] By setting up an adjustment structure, rotating the bidirectional screw drives two clamping plates to move synchronously in opposite directions within their respective adjustment slots via threaded transmission. The lever inserted into the circular hole of the disc acts as a lever, allowing for effortless screw rotation. The clamping plates quickly clamp or release the mold around its perimeter, facilitating mold replacement. The clamping plates on the first and second adjustment slots work together to precisely position and clamp the mold at the center of the base, improving the efficiency of mold assembly and disassembly, as well as mold maintenance.
[0022] By setting up auxiliary structures and using pallets and auxiliary frames, the transport vehicle and the equipment body can be quickly and securely connected. With the help of the transport vehicle, users can easily transport and manage pipe parts in batches, reducing labor intensity. The pallets and auxiliary frames can be stored in the storage slots, making them highly practical. Attached Figure Description
[0023] Figure 1 A schematic diagram of the structure of an anti-deformation elbow forming device provided by this utility model;
[0024] Figure 2 for Figure 1 The diagram shows the structural schematic of the adjustment structure.
[0025] Figure 3 for Figure 2 A partial structural diagram of the adjustment structure shown;
[0026] Figure 4 for Figure 2A partial structural diagram of the adjustment structure is shown;
[0027] Figure 5 for Figure 2 Enlarged view of point A;
[0028] Figure 6 for Figure 5 The diagram shows the structure of the auxiliary frame.
[0029] Labels in the diagram: 1. Machine body; 2. Stamping device; 3. Mold; 4. Pipe fitting; 5. Multi-ball mandrel; 6. Adjustment structure; 601. Base; 602. First adjustment groove; 603. Second adjustment groove; 604. Bidirectional screw; 605. Disc; 606. Handle; 607. Clamping plate; 608. Pulley; 609. Anti-slip mat; 610. Slide groove; 611. Slide rod; 7. Auxiliary structure; 71. Storage groove; 72. Auxiliary frame; 73. Rotating shaft; 74. Clamping plate; 75. Coil spring; 76. Transport vehicle; 77. Push handle. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0031] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0032] Please see Figures 1 to 4 The present invention provides a deformation-resistant elbow forming device, comprising: a body 1 and an adjusting structure 6. A stamping device 2 is installed on the upper end of the body 1. A mold 3 is fixedly connected to the surface of the body 1 by means of the adjusting structure 6. A pipe fitting 4 is abutted on the upper surface of the mold 3. A multi-ball mandrel 5 is slidably connected to the inner wall of the pipe fitting 4. The adjusting structure 6 is provided on the surface of the body 1. An auxiliary structure 7 is provided on one side of the body 1.
[0033] In the embodiments of this utility model, please refer to Figures 1 to 4The adjustment structure 6 includes a base 601, which is fixedly connected to the machine body 1. The upper surface of the base 601 abuts against the mold 3. A first adjustment groove 602 and a second adjustment groove 603 are provided on the upper surface of the base 601. A bidirectional screw 604 is rotatably connected to the inner wall of both the first adjustment groove 602 and the second adjustment groove 603. A disc 605 is fixedly connected to one end of the bidirectional screw 604. Several circular holes are provided on the arc surface of the disc 605. A handle 606 is slidably connected to the inner wall of one of the circular holes. Two clamping plates 607 are threadedly connected to the arc surface of the bidirectional screw 604. The clamping plates 607 are slidably connected to the inner wall of the first adjustment groove 602 or the second adjustment groove 603. The clamping plates 607 are used to clamp and position the mold 3 around its perimeter, allowing for easy assembly and disassembly of the mold 3 from the machine body 1 and improving the dimensional stability of the mold. To improve the efficiency of the clamping operation, several pulleys 608 are rotatably connected to both sides of the clamping plate 607. The pulleys 608 significantly reduce the friction when the clamping plate 607 moves in the adjustment groove, making the movement of the clamping plate 607 smoother. Anti-slip pads 609 are fixedly connected to the surface of the clamping plate 607. The anti-slip pads 609 are rubber pads. The rubber anti-slip pads 609 increase the friction between the clamping plate 607 and the side contact surface of the mold 3, ensuring a firm and reliable clamping. Several sliding rods 611 are fixedly connected to the inner walls of the first adjustment groove 602 and the second adjustment groove 603. Two sliding grooves 610 are opened on both sides of the clamping plate 607. The inner wall of the sliding groove 610 is slidably connected to the sliding rod 611. The sliding rod 611 cooperates with the sliding groove 610 on the clamping plate 607 to provide precise linear guidance for the movement of the clamping plate 607 and improve the stability of the clamping plate 607 when it moves.
[0034] In the embodiments of this utility model, please refer to Figure 5 and Figure 6 The auxiliary structure 7 includes a storage slot 71, which is formed on the body 1. An auxiliary frame 72 is slidably connected to the inner wall of the storage slot 71. A rotating shaft 73 is fixedly connected to the inner wall of the auxiliary frame 72. A clamping plate 74 is rotatably connected to the arc surface of the rotating shaft 73. A coil spring 75 is sleeved on the arc surface of the rotating shaft 73. The two ends of the coil spring 75 are fixedly connected to the clamping plate 74 and the auxiliary frame 72, respectively. A transport cart 76 is slidably connected to the surface of the auxiliary frame 72. The transport cart 76 is engaged with the clamping plate 74. By utilizing the cooperation of the clamping plate 74 and the auxiliary frame 72, the transport cart 76 can engage with the equipment. The components 1 can be quickly and securely connected. With the help of the transport vehicle 76, it is convenient for users to transport and manage the pipe fittings 4 in batches, reducing labor intensity. The pallet 74 and the auxiliary frame 72 can be stored in the storage slot 71, which is highly practical. A push handle 77 is fixedly connected to one side of the transport vehicle 76. The push handle 77 makes it easy for operators to push the transport vehicle 76, making the handling process more labor-saving and flexible. The cross-section of the pallet 74 is semi-elliptical. The semi-elliptical cross-section design makes the pallet 74 have a smoother profile during rotation and makes it easier to slide into the locking part of the transport vehicle 76.
[0035] The working principle of the anti-deformation elbow forming device provided by this utility model is as follows: By setting the adjustment structure 6, firstly rotate the two bidirectional screws 604 on the base 601. The two bidirectional screws 604 drive several clamping plates 607 to move. During this process, the two clamping plates 607 in the first adjustment groove 602 move away from each other, and the two clamping plates 607 in the second adjustment groove 603 move away from each other, releasing the limitation on the mold 3 on the base 601. At this time, the mold 3 can be removed and a new mold 3 can be placed on the base 601. Then, rotate the bidirectional screws 604 in the opposite direction. When rotating the bidirectional screws 604, the lever 606 is pushed into the round hole on the disc 605, using the lever... As the lever moves away, the operating lever 606 drives the disc 605 and the double-acting screw 604 to rotate, saving time and effort. The double-acting screw 604, through its thread, drives the clamping plate 607 to move closer to the mold 3. Several clamping plates 607 clamp and position the mold 3 at the center of the base 601. Among them, the pulley 608 significantly reduces the friction of the clamping plate 607 when it moves in the adjustment groove, making the movement of the clamping plate 607 smoother. The rubber anti-slip pad 609 increases the friction between the clamping plate 607 and the side contact surface of the mold 3, ensuring a firm and reliable clamping. The sliding rod 611 cooperates with the sliding groove 610 on the clamping plate 607 to provide precise linear guidance for the movement of the clamping plate 607, improving the stability of the clamping plate 607 during movement.
[0036] By setting the auxiliary structure 7, the pallet 74 and the auxiliary frame 72 are first moved away from the body 1, so that the pallet 74 and the auxiliary frame 72 extend out of the storage slot 71. During this process, the coil spring 75 on the rotating shaft 73 always provides a torsional force to the pallet 74. The user needs to support the pallet 74 to keep it vertical. Then, the transport cart 76 is moved close to the auxiliary frame 72 and the pallet 74. After the auxiliary frame 72 and the pallet 74 are inserted into the transport cart 76, the pallet 74 is released. Under the torsional force of the coil spring 75, the pallet 74 rotates along the rotating shaft 73 to a horizontal state, and the pallet 74 is engaged with the transport cart 76. The push handle 77 makes it easy for the operator to push the transport cart 76, making the handling process more labor-saving and flexible. The semi-elliptical cross-section design makes the pallet 74 have a smoother profile during rotation, making it easier to slide into the engagement part of the transport cart 76.
[0037] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A deformation-resistant elbow forming device, characterized in that, include: The machine body (1) and the adjustment structure (6) are provided. A stamping device (2) is installed on the upper end of the machine body (1). A mold (3) is fixedly connected to the surface of the machine body (1) by means of the adjustment structure (6). A pipe fitting (4) is abutted on the upper surface of the mold (3). A multi-ball mandrel (5) is slidably connected to the inner wall of the pipe fitting (4). An adjustment structure (6) is provided on the surface of the machine body (1). The adjustment structure (6) includes a base (601). The base (601) is fixedly connected to the machine body (1). The upper surface of the base (601) abuts against the mold (3). An opening is provided on the upper surface of the base (601). The first adjustment groove (602) and the second adjustment groove (603) are rotatably connected to the inner walls of both the first adjustment groove (602) and the second adjustment groove (603). A bidirectional screw (604) is fixedly connected to one end of the bidirectional screw (604). A disk (605) is opened on the arc surface of the disk (605). A handle (606) is slidably connected to the inner wall of one of the arc holes. Two clamping plates (607) are threadedly connected to the arc surface of the bidirectional screw (604). The clamping plates (607) are slidably connected to the inner wall of the first adjustment groove (602) or the second adjustment groove (603).
2. The deformation-resistant elbow forming device according to claim 1, characterized in that, Several pulleys (608) are rotatably connected to both sides of the clamp (607).
3. The anti-deformation elbow forming device according to claim 1, characterized in that, The surface of the clamp (607) is fixedly connected with an anti-slip pad (609), which is a rubber pad.
4. The deformation-resistant elbow forming device according to claim 1, characterized in that, The inner walls of the first adjustment groove (602) and the second adjustment groove (603) are fixedly connected with a number of sliding rods (611). Two sliding grooves (610) are opened on both sides of the clamp (607), and the inner walls of the sliding grooves (610) are slidably connected to the sliding rods (611).
5. The deformation-resistant elbow forming device according to claim 1, characterized in that, An auxiliary structure (7) is provided on one side of the body (1). The auxiliary structure (7) includes a storage slot (71). The storage slot (71) is opened on the body (1). An auxiliary frame (72) is slidably connected to the inner wall of the storage slot (71). A rotating shaft (73) is fixedly connected to the inner wall of the auxiliary frame (72). A clamping plate (74) is rotatably connected to the arc surface of the rotating shaft (73). A coil spring (75) is sleeved on the arc surface of the rotating shaft (73). The two ends of the coil spring (75) are fixedly connected to the clamping plate (74) and the auxiliary frame (72) respectively. A transport vehicle (76) is slidably connected to the surface of the auxiliary frame (72). The transport vehicle (76) is engaged with the clamping plate (74).
6. The deformation-resistant elbow forming device according to claim 5, characterized in that, A push handle (77) is fixedly connected to one side of the transport vehicle (76).
7. The deformation-resistant elbow forming device according to claim 5, characterized in that, The cross-section of the card plate (74) is semi-elliptical.