A pipe welding die for processing special-shaped pipe fittings

By introducing a quick-installation mechanism and a debris cleaning and adjustment mechanism into the welded pipe mold, the problems of mold block breakage and debris adhesion were solved, achieving quick mold installation and cleaning.

CN224542902UActive Publication Date: 2026-07-24HEBEI ZHONGHE CASTING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEBEI ZHONGHE CASTING CO LTD
Filing Date
2025-08-28
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing welded pipe molds are prone to jamming, breakage, and metal debris adhesion during use, which can prevent the mold from rotating properly and cause small pits during pressing.

Method used

A welded pipe mold including a quick installation mechanism and a debris cleaning and adjustment mechanism was designed. The mold can be quickly installed by L-shaped blocks and locking bolts, and metal debris can be removed by brush plates and brush bristle structures.

Benefits of technology

It enables quick mold installation and effective removal of metal debris, avoids inconvenience in mold rotation and surface damage during molding, and improves ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of welding pipe mould for special-shaped pipe fitting processing, including bottom plate, the top of bottom plate is fixedly connected with two corresponding distribution's support plate, the inside of two support plates is welded with two corresponding distribution's limit plate, the outside of limit plate is provided with clamping plate, one of fixed bolt is threadedly connected in limit plate, another fixed bolt is threadedly connected in clamping plate, every two limit plate and clamping plate are rotatably connected with shaft rod, the outside of shaft rod is provided with mould, quick mounting mechanism is arranged between mould and shaft rod, the inside of two support plates is provided with scrap cleaning brush adjusting mechanism. The quick mounting mechanism set up can be conveniently and quickly install replacement damaged mould, the scrap cleaning brush adjusting mechanism set up can be conveniently and quickly clean dust and scrap produced after mould rolling, so that guarantee subsequent rolling welding pipe when pipeline outside is more flat and does not appear small pit.
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Description

Technical Field

[0001] This utility model belongs to the field of welded pipe mold technology, specifically relating to a welded pipe mold for processing irregularly shaped pipe fittings. Background Technology

[0002] Welding pipe molds for processing irregular pipe fittings are special molds used to produce non-circular cross-section (such as square, rectangular, elliptical, polygonal, etc.) metal welded pipes. They are widely used in construction, automobiles, furniture, machinery manufacturing and other fields. These molds are usually made of high-strength alloy steel or hard alloy, and have wear-resistant, high-temperature resistant and deformation-resistant properties to ensure the forming accuracy and stability of the pipes.

[0003] However, in actual use, those skilled in the art have found that most existing welded pipe molds are locked in place by clips directly fitted onto the rotating shaft. Over time, the clips are prone to breakage, preventing the mold from rotating and pressing, which is inconvenient for users. Furthermore, when crushing pipe raw materials, most existing molds are prone to dust and metal debris adhering to their exterior, which can easily cause small pits to be pressed into the exterior when forming a round shape, making it inconvenient for users. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a welded pipe mold for processing irregularly shaped pipe fittings, which has the advantages of convenient and quick installation and preventing the mold from being contaminated with metal shavings.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welded pipe mold for processing irregularly shaped pipe fittings, comprising a base plate, two correspondingly distributed support plates fixedly connected to the top of the base plate, two correspondingly distributed limiting plates welded to the inner sides of the two support plates, a placement groove provided inside the limiting plate, a snap-fit ​​plate provided outside the limiting plate, connecting plates placed on both sides of the limiting plate and the snap-fit ​​plate, two symmetrically distributed fixing bolts movably inserted inside the connecting plate, one fixing bolt threaded into the limiting plate, the other fixing bolt threaded into the snap-fit ​​plate, a rotating shaft rotatably connected between every two limiting plates and snap-fit ​​plates, a mold provided outside the rotating shaft, a connecting sleeve for fixing the motor output end provided at the top of the rotating shaft, a quick installation mechanism provided between the mold and the rotating shaft, and a debris cleaning and adjusting mechanism provided inside the two support plates.

[0006] Preferably, the quick installation mechanism includes two L-shaped locking blocks, both of which are welded to the outside of the rotating shaft. Each of the two L-shaped locking blocks has a first through hole inside. The top of the mold is fixedly connected to two correspondingly distributed fixed shells. The two L-shaped locking blocks are respectively inserted into the two fixed shells. Each of the two fixed shells has a second through hole inside. A locking bolt is inserted into the second through hole, and the locking bolt passes through the first through hole and is threaded onto the inner wall of the fixed shell.

[0007] Preferably, both sides of the rotating shaft are fixedly connected to fixing blocks, and each of the two fixing blocks has a third through hole inside.

[0008] Preferably, the top of the mold is fixedly connected to two correspondingly distributed tension bolts, the tension bolts pass through the third through hole, and the external threads of the tension bolts are connected to tension nuts, the tension nuts being in contact with the top of the fixed block.

[0009] Preferably, the debris cleaning and adjusting mechanism includes two connecting strips, which are respectively fixedly connected to the inner sides of two support plates. The connecting strips are threadedly connected to the support plates with screws. One end of the screw is fixedly connected to a handle, and the other end of the screw is rotatably connected to a bearing. A mounting plate is fixedly connected to the outside of the bearing, and a brush plate is provided on the outside of the mounting plate.

[0010] Preferably, the mounting plate has two correspondingly distributed slots inside, and the brush plate is fixedly connected to two correspondingly distributed slot blocks outside, with the two slot blocks respectively fitting into the two slots.

[0011] Preferably, the mounting plate is externally fixedly connected to two symmetrically distributed limiting rods, both of which are movably inserted into the support plate and the connecting strip.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By fitting the mold onto the rotating shaft, and then aligning the fixed shell on the top of the mold with the outside of the L-shaped locking block, the locking bolt is inserted into the second through hole, while the locking bolt passes through the first through hole and is threaded into the inside of the fixed shell, thus completing the initial fixing. At the same time, the third through hole in the fixed block is fitted onto the outside of the tension bolt, and then the tension nut is threaded onto the outside of the tension bolt. The tension bolt is then turned to contact the outside of the fixed block, thus completing the secondary fixing. This structure allows for quick mold installation and is more convenient for users.

[0014] 2. When the mold rotates and contacts the bristles on the outside of the brush plate, it can quickly remove dust and metal debris adhering to the mold. The set locking blocks and locking slots allow for easy and quick replacement of the brush plate. When the bristles on the outside of the brush plate are worn significantly, the handle can be turned, which will then drive the fixed screw to rotate. Since the screw and the connecting strip are threaded, it will move forward significantly during rotation, simultaneously moving the connecting bearing forward. This will then move the external mounting plate forward. As the mounting plate moves, the externally fixed limit rod slides within the connecting strip and support plate, making the movement smoother. This will then drive the externally mounted brush plate forward, ensuring that the bristles can contact the mold, thus effectively scraping away metal debris on the outside of the mold in a timely manner. This prevents small pits from being formed on the outside of the pipe during the pressing and forming process, making it more convenient for users. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall side structure of this utility model;

[0017] Figure 3 This is a top view of the overall structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the assembly structure of the quick-installation mechanism of this utility model;

[0019] Figure 5 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Base plate; 2. Support plate; 3. Placement slot; 4. Limiting plate; 5. Clip plate; 6. Connecting plate; 7. Fixing bolt; 8. Rotating shaft; 9. Connecting sleeve; 10. Mold; 11. Quick installation mechanism; 1101. L-shaped locking block; 1102. Fixing shell; 1103. First through hole; 1104. Second through hole; 1105. Fixing block; 1106. Third through hole; 1107. Locking bolt; 1108. Tensioning bolt; 1109. Tensioning nut; 12. Debris cleaning brush adjustment mechanism; 1201. Connecting strip; 1202. Screw; 1203. Handle; 1204. Brush plate; 1205. Bearing; 1206. Mounting plate; 1207. Locking slot; 1208. Locking block; 1209. Limiting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] Please see Figure 1-5 This utility model provides a technical solution: a welded pipe mold for processing irregular pipe fittings, including a base plate 1, two correspondingly distributed support plates 2 fixedly connected to the top of the base plate 1, two correspondingly distributed limiting plates 4 welded to the inner sides of the two support plates 2, a placement groove 3 opened inside the limiting plate 4, a snap-fit ​​plate 5 provided outside the limiting plate 4, and connecting plates 6 placed on both sides of the limiting plate 4 and the snap-fit ​​plate 5, two symmetrically distributed fixing bolts 7 movably inserted inside the connecting plate 6, one fixing bolt 7 threadedly connected inside the limiting plate 4, and the other fixing bolt 7 threadedly connected inside the snap-fit ​​plate 5, a rotating shaft 8 rotatably connected between every two limiting plates 4 and snap-fit ​​plates 5, a mold 10 provided outside the rotating shaft 8, a connecting sleeve 9 for fixing the motor output end provided at the top of the rotating shaft 8, a quick installation mechanism 11 provided between the mold 10 and the rotating shaft 8, and a debris cleaning and adjusting mechanism 12 provided inside the two support plates 2.

[0024] In this implementation scheme, the quick installation mechanism 11 allows for convenient and quick installation and replacement of the damaged mold 10. The debris cleaning and adjustment mechanism 12 allows for convenient cleaning of dust and debris generated on the outside of the mold 10 after rolling, ensuring a smoother pipe surface without small pits during subsequent rolling of the welded pipe. The limiting plate 4, snap-fit ​​plate 5, connecting plate 6, and fixing bolts 7 allow for quick and convenient installation of the rotating shaft 8.

[0025] Example 2:

[0026] Please see Figure 1-4Based on Embodiment 1, this utility model provides a technical solution: the quick installation mechanism 11 includes two L-shaped locking blocks 1101, both of which are welded to the outside of the rotating shaft 8. Each of the two L-shaped locking blocks 1101 has a first through hole 1103 inside. The top of the mold 10 is fixedly connected to two correspondingly distributed fixing shells 1102. The two L-shaped locking blocks 1101 are respectively inserted into the two fixing shells 1102. Each of the two fixing shells 1102 has a second through hole 1104 inside, and a [missing information - likely a device or component] is inserted into the second through hole 1104. A locking bolt 1107 is threaded through the first through hole 1103 and connected to the inner wall of the fixed shell 1102. Fixing blocks 1105 are fixedly connected to both sides of the rotating shaft 8. A third through hole 1106 is opened inside the two fixing blocks 1105. Two corresponding tension bolts 1108 are fixedly connected to the top of the mold 10. The tension bolts 1108 pass through the third through hole 1106. Tensioning nuts 1109 are threadedly connected to the outside of the tension bolts 1108. Tensioning nuts 1109 are in contact with the top of the fixing blocks 1105.

[0027] In this embodiment, when a damaged mold 10 needs to be quickly replaced, the mold 10 is first fitted onto the rotating shaft 8. Then, the fixing shell 1102 fixed to the top of the mold 10 is aligned with the outside of the L-shaped card block 1101 and fitted. Then, the locking bolt 1107 is inserted into the second through hole 1104, while the locking bolt 1107 passes through the first through hole 1103 and is threaded into the inside of the fixing shell 1102, thus completing the initial fixation. At the same time, the third through hole 1106 opened in the fixing block 1105 is fitted onto the outside of the tension bolt 1108. Then, the tension nut 1109 is threaded onto the outside of the tension bolt 1108, and the tension bolt 1108 is turned to contact the outside of the fixing block 1105, thus completing the secondary fixation. This structure allows the mold 10 to be installed quickly, making it more convenient for users.

[0028] Example 3:

[0029] Please see Figure 1-5Based on Embodiments 1 and 2, this utility model provides a technical solution: the debris cleaning brush adjustment mechanism 12 includes two connecting strips 1201, which are respectively fixedly connected to the inner sides of two support plates 2. A screw 1202 is threadedly connected to the connecting strips 1201 and the support plates 2. A handle 1203 is fixedly connected to one end of the screw 1202, and a bearing 1205 is rotatably connected to the other end of the screw 1202. A mounting plate 12 is fixedly connected to the outside of the bearing 1205. 06. A brush plate 1204 is provided on the outside of the mounting plate 1206. Two correspondingly distributed slots 1207 are opened inside the mounting plate 1206. Two correspondingly distributed slot blocks 1208 are fixedly connected to the outside of the brush plate 1204. The two slot blocks 1208 are respectively fitted into the two slots 1207. Two symmetrically distributed limiting rods 1209 are fixedly connected to the outside of the mounting plate 1206. Both limiting rods 1209 are movably inserted into the support plate 2 and the connecting strip 1201.

[0030] In this embodiment, when it is necessary to remove metal debris and dust from the outside of the mold 10, the dust and metal debris adhering to the mold 10 can be quickly and promptly removed when the mold 10 rotates and contacts the bristles on the outside of the brush plate 1204. The brush plate 1204 can be easily and quickly replaced through the provided locking block 1208 and locking groove 1207. When the bristles on the outside of the brush plate 1204 are worn significantly, the handle 1203 can be turned, which will then drive the fixed screw 1202 to start rotating. Since the screw 1202 and the connecting strip 1201 are threadedly connected... When rotating, a large amount of material moves forward, simultaneously driving the connecting bearing 1205 forward. This, in turn, moves the externally mounted mounting plate 1206 forward. As the mounting plate 1206 moves, the externally fixed limiting rod 1209 slides within the connecting strip 1201 and the support plate 2, making the movement smoother. Subsequently, it drives the externally mounted brush plate 1204 forward, ensuring that the brush bristles can contact the mold 10, thereby effectively scraping away metal debris from the outside of the mold 10 in a timely manner. This prevents small pits from being created on the outside of the pipe during the pressing and forming process, making it more convenient for users.

[0031] The working principle and usage process of this utility model are as follows: When it is necessary to quickly replace the damaged mold 10, firstly, the mold 10 is sleeved on the rotating shaft 8. Then, the fixing shell 1102 fixed to the top of the mold 10 is aligned with the outside of the L-shaped card block 1101 and sleeved. Then, the locking bolt 1107 is inserted into the second through hole 1104, while the locking bolt 1107 passes through the first through hole 1103, and the locking bolt 1107 is threaded into the inside of the fixing shell 1102. At this time, the initial fixing is completed. Simultaneously, the third through hole 1106 in the fixing block 1105 is fitted onto the outside of the tension bolt 1108. Then, the tension nut 1109 is threaded onto the outside of the tension bolt 1108, and the tension bolt 1108 is tightened until it contacts the outside of the fixing block 1105, thus completing the secondary fixing. This structure allows for quick installation of the mold 10, making it more convenient for users. When it is necessary to remove metal debris and dust from the outside of the mold 10, the rotation of the mold 10 interacts with the brush plate 12. When the external bristles of 04 come into contact, they can quickly remove dust and metal debris adhering to the mold 10. The set locking block 1208 and locking groove 1207 allow for convenient and quick replacement of the brush plate 1204. When the external bristles of the brush plate 1204 are significantly worn, the handle 1203 can be turned, which will then drive the fixed screw 1202 to rotate. Since the screw 1202 and the connecting strip 1201 are threaded, it will move forward significantly during rotation, simultaneously driving the connecting bearing. Simultaneously, 1205 moves forward, which in turn drives the externally mounted mounting plate 1206 to move forward. As the mounting plate 1206 moves, the externally fixed limiting rod 1209 slides within the connecting strip 1201 and the support plate 2, making the movement smoother. Subsequently, it drives the externally mounted brush plate 1204 to move forward, ensuring that the brush bristles can contact the mold 10, thereby effectively scraping away metal debris from the outside of the mold 10 in a timely manner, avoiding small pits on the outside of the pipe during the pressing and forming of the circle, and making it more convenient for users to use.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding pipe mold for processing irregularly shaped pipe fittings, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to two correspondingly distributed support plates (2). Two correspondingly distributed limiting plates (4) are welded to the inner sides of the two support plates (2). The limiting plates (4) have placement grooves (3) inside. The limiting plates (4) are provided with snap-fit ​​plates (5) on the outside. Connecting plates (6) are placed on both sides of the limiting plates (4) and snap-fit ​​plates (5). Two symmetrically distributed fixing bolts (7) are movably inserted into the connecting plates (6). One of the fixing bolts (7) is threaded. Connected inside the limiting plate (4), another fixing bolt (7) is threaded inside the snap-fit ​​plate (5). A rotating shaft (8) is rotatably connected between every two limiting plates (4) and snap-fit ​​plates (5). A mold (10) is provided on the outside of the rotating shaft (8). A connecting sleeve (9) for fixing the motor output end is provided on the top of the rotating shaft (8). A quick installation mechanism (11) is provided between the mold (10) and the rotating shaft (8). A debris cleaning and adjusting mechanism (12) is provided on the inner side of both support plates (2).

2. The welding pipe mold for processing irregularly shaped pipe fittings according to claim 1, characterized in that: The quick installation mechanism (11) includes two L-shaped locking blocks (1101), both of which are welded to the outside of the rotating shaft (8). Each of the two L-shaped locking blocks (1101) has a first through hole (1103) inside. The top of the mold (10) is fixedly connected to two correspondingly distributed fixed shells (1102). The two L-shaped locking blocks (1101) are respectively inserted into the two fixed shells (1102). Each of the two fixed shells (1102) has a second through hole (1104) inside. A locking bolt (1107) is inserted into the second through hole (1104), and the locking bolt (1107) passes through the first through hole (1103) and is threaded onto the inner wall of the fixed shell (1102).

3. The welding pipe mold for processing irregularly shaped pipe fittings according to claim 2, characterized in that: Both sides of the rotating shaft (8) are fixedly connected to fixing blocks (1105), and both fixing blocks (1105) have a third through hole (1106) inside.

4. The welding pipe mold for processing irregularly shaped pipe fittings according to claim 2, characterized in that: The top of the mold (10) is fixedly connected to two correspondingly distributed tension bolts (1108), which pass through the third through hole (1106). The tension bolts (1108) are threaded with tension nuts (1109), which are in contact with the top of the fixing block (1105).

5. The welding pipe mold for processing irregularly shaped pipe fittings according to claim 1, characterized in that: The debris cleaning and adjusting mechanism (12) includes two connecting strips (1201), which are fixedly connected to the inner sides of two support plates (2). The connecting strips (1201) are threadedly connected to the support plates (2) with screws (1202). One end of the screws (1202) is fixedly connected to a handle (1203), and the other end of the screws (1202) is rotatably connected to a bearing (1205). The bearing (1205) is fixedly connected to an external mounting plate (1206), and a brush plate (1204) is provided on the external side of the mounting plate (1206).

6. The welding pipe mold for processing irregularly shaped pipe fittings according to claim 5, characterized in that: The mounting plate (1206) has two correspondingly distributed slots (1207) inside, and the brush plate (1204) is fixedly connected to two correspondingly distributed slot blocks (1208) on the outside. The two slot blocks (1208) are respectively fitted into the two slots (1207).

7. A welding pipe mold for processing irregularly shaped pipe fittings according to claim 5, characterized in that: The mounting plate (1206) has two symmetrically distributed limiting rods (1209) externally fixedly connected, and both limiting rods (1209) are movably inserted into the support plate (2) and the connecting strip (1201).