A welding apparatus for a hard tube and a welding head thereof

Abstract

The application relates to a welding device for a hard pipe and a welding head thereof, comprising a base, a heater and a supporting seat arranged on the base, a supporting groove matched with the shape and size of the welding head arranged on the supporting seat, a correction rod arranged in the supporting groove, and the section outer diameter of the correction rod being matched with the inner diameter of a through hole, the correction rod being arranged in the through hole when the welding head is embedded in the supporting groove. The supporting seat is arranged, and the welding head is embedded in the supporting groove before welding, so as to support the welding head during welding and keep the position and posture of the welding head stable. The correction rod is fixedly connected to the supporting seat, the length direction of the correction rod is perpendicular to the upper surface of the supporting seat, the hard pipe is sleeved on the correction rod during welding, the welding head and the hard pipe are in a stable coaxial state at this time, the heater is started to start the welding work, the coaxial state between the welding head and the hard pipe during the welding process is kept, and the application has the effect of improving the yield.

Description

Technical Field

[0001] This application relates to the field of welding technology equipment, and in particular to a welding device for rigid pipes and their weld joints. Background Technology

[0002] A type of metal rigid tubing hydraulic fitting, such as Figure 1 As shown, the rigid tube 101 is usually used with a welding head 102. The welding head 102 is connected to the end of the rigid tube 101 by brazing. The welding head 102 has a through hole 103 that is coaxially connected to the inner hole of the rigid tube 101. During welding, a copper sheet 104 is first fitted onto one end of the outer wall of the rigid tube 101. Then, the rigid tube 101 and the welding head 102 are brought into contact. A heater is used to heat this part of the rigid tube 101, the welding head 102, and the copper sheet 104. The copper sheet 104 has a lower melting point and melts first, making contact with the rigid tube 101 and the welding head 102. After the copper cools and solidifies, the welding work between the rigid tube 101 and the welding head 102 is completed.

[0003] Regarding the aforementioned technologies, the welding head needs to be coaxially welded with the rigid tube. The welding process involves heating and recooling the copper sheet, which takes a certain amount of time. It is difficult to maintain the perpendicularity between the rigid tube and the welding head throughout the process, resulting in a low yield rate. Summary of the Invention

[0004] In order to facilitate maintaining the coaxiality between the welding head and the rigid pipe during the welding process and improve the yield rate, this application provides a welding device for rigid pipe and its welding head.

[0005] This application provides a welding device for rigid pipes and their welded joints, which adopts the following technical solution:

[0006] A welding device for a rigid tube and its welding head includes a base, a heater for melting copper sheets on the base, a support seat for supporting the welding head on the base, a support groove adapted to the shape and size of the welding head on the support seat, a correction rod for connecting the welding head and the rigid tube in series in the support groove, the outer diameter of the correction rod's cross-section being adapted to the inner diameter of the through hole, when the welding head is embedded in the support groove, the correction rod passes through the through hole, and when the rigid tube is sleeved on the correction rod, the welding head and the rigid tube are coaxial.

[0007] By adopting the above technical solution, a support base is set up, and the welding head is embedded in the support groove before welding. This supports the rod joint during welding and keeps the position and posture of the welding head stable. The correction rod is fixedly connected to the support base, and the length direction of the correction rod is perpendicular to the upper surface of the support base. During welding, a copper sheet is fitted onto one end of the outer wall of the rigid tube, and then the rigid tube is fitted onto the correction rod. At this time, the welding head and the rigid tube are in a stable coaxial state. The heating element can be started to begin the welding process. This helps to maintain the coaxial state between the welding head and the rigid tube during the welding process and improves the yield rate.

[0008] Optionally, the base is provided with a feeding plate, and the feeding plate has a feeding groove adapted to the rigid tube. The base is slidably connected with a mounting block for fitting copper sheets onto the rigid tube, and the sliding direction of the mounting block is parallel to the length direction of the feeding groove. The mounting block has a mounting hole on the side near the feeding plate, and the mounting hole is coaxially arranged with the rigid tube located on the feeding groove. The side of the feeding plate away from the mounting block is provided with a support block that provides a support point for the rigid tube when fitting the copper sheet.

[0009] By adopting the above technical solution, copper sheets need to be fitted onto one end of the outer wall of the rigid pipe before welding, which requires a certain amount of manual labor and is inefficient. By setting up a feeding plate and opening several parallel feeding slots, the copper sheets are coaxially placed in the mounting holes and fit against the bottom wall of the mounting holes. With the help of mounting blocks and support blocks, the copper sheets can be installed in batches quickly, which helps to save labor used for copper sheet installation and improve installation efficiency.

[0010] Optionally, the top of the mounting block is provided with a guide groove for automatic feeding of copper sheets. The guide groove is connected to the mounting hole and its shape and size are adapted to the copper sheets.

[0011] By adopting the above technical solution, the copper sheets are installed on the rigid tube and then removed along with the tube. However, manually adding copper sheets is inefficient. A guide slot is installed, and the copper sheets are placed in rows within it. After the bottom layer of copper sheets is installed and removed, the upper layers lose their support and move downwards to fill the gap, achieving automatic feeding of the copper sheets. This helps save labor and improve the feeding efficiency of the copper sheets.

[0012] Optionally, the mounting hole is provided with a brush to prevent the copper sheet from tipping over. The brush is arranged around the inner wall of the mounting hole, and the distance between the brush and the bottom wall of the mounting hole is adapted to the thickness of the copper sheet.

[0013] By adopting the above technical solution, when a new copper sheet is inserted into the mounting hole, it lacks sufficient support and may tip over, making it impossible to install. A tipped copper sheet cannot be properly fitted. The brush provides support to the copper sheet without obstructing the passage of the rigid tube, helping to maintain its upright position, ensuring stable installation, and reducing the probability of errors.

[0014] Optionally, the base is provided with a storage box for storing rigid tubes. The rigid tubes in the storage box are arranged parallel to each other. The bottom end of the storage box is open. The feeding plate is slidably connected to the base and the sliding direction of the feeding plate is perpendicular to the length direction of the rigid tubes in the storage box. The base is provided with a feeding cylinder for driving the feeding plate to slide. The upper surface of the feeding plate abuts against the storage box. The length direction of the feeding groove is perpendicular to the sliding direction of the feeding plate.

[0015] The above technical solution requires workers to neatly place the rigid pipes one by one into the feeding trough before welding, which limits the feeding speed. A storage box is set up, and the rigid pipes are stored in the storage box in the same direction before welding, maintaining the same orientation within the box. During feeding, the feeding plate is slid, causing the feeding trough to slide to the position directly opposite the bottom of the storage box. The rigid pipes enter the feeding trough under their own weight. Sliding the feeding plate aligns the corresponding feeding trough with the mounting hole, completing the automatic feeding process. This achieves automated batch feeding of rigid pipes, improving feeding efficiency.

[0016] Optionally, the support block is provided with clamping slots that correspond one-to-one with the feeding groove. The clamping slots are provided with clamping mechanisms for clamping rigid tubes. The support block is rotatably connected to the base and its rotation axis is perpendicular to the length direction of the feeding groove. The base is provided with a shifting motor for driving the support block to rotate. The support seat is located directly below the support block.

[0017] By adopting the above technical solution, when installing copper sheets onto the rigid tube, the mounting block slides towards the rigid tube and pushes the rigid tube into the clamping groove. The bottom wall of the clamping groove abuts against the rigid tube and provides support for it. At the same time, the clamping mechanism clamps and fixes the rigid tube in the clamping groove. After the copper sheet is installed, the mounting block is slid to allow the rigid tube and copper sheet to disengage from the mounting hole. The shifting motor is then activated to drive the support block to rotate, aligning the end of the rigid tube with the copper sheet with the support groove. The clamping mechanism releases the rigid tube, causing it to fall and abut against the welding head. Simultaneously, the alignment rod is embedded in the rigid tube to maintain its vertical position. This achieves automatic batch docking of rigid tubes and welding heads.

[0018] Optionally, the clamping mechanism includes two clamping plates slidably connected to the support block. The clamping plates are disposed in the clamping groove. When the rigid tube enters the clamping groove, the two clamping plates are located at both ends of the rigid tube and the sliding direction of the clamping plates is perpendicular to the length direction of the rigid tube. The support block is provided with a clamping cylinder for driving the clamping plates to slide.

[0019] By adopting the above technical solution, when the rigid tube enters the clamping groove, the telescopic shaft of the clamping cylinder extends, driving the clamping plates at both ends to move closer to the rigid tube and clamp the rigid tube, thereby achieving the clamping and fixing of the rigid tube. After the rigid tube is transferred to the position, the telescopic shaft of the clamping cylinder retracts, causing the clamping plates to disengage from the rigid tube, thus realizing the release of the rigid tube.

[0020] Optionally, the support base is rotatably connected to the base, the base is provided with a discharge motor for driving the support base to rotate, and the base is provided with a concave groove for collecting the welded hard pipe, the concave groove being located below the support base.

[0021] By adopting the above technical solution, after the rigid pipe and the welding head are welded, the unloading motor is started to drive the support seat to rotate, so that the support groove rotates to a downward tilting angle. Under the action of their own gravity, the rigid pipe and the welding head fall into the concave groove. The rigid pipe gathers in parallel in the concave groove, thus realizing automatic material discharge.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. In the existing welding process of rigid pipe and welding head, it is difficult to maintain the perpendicularity of the rigid pipe and welding head throughout the process, resulting in a small proportion of products that meet the standards after welding and a low yield rate. By setting a support base on the base and embedding the welding head into the support groove before welding, and fixing the correction rod to the support base with the length direction of the correction rod perpendicular to the upper surface of the support base, the welding head and rigid pipe are in a stable coaxial state after the welding head and rigid pipe are sleeved on the correction rod. This helps to maintain the coaxial state between the welding head and rigid pipe during the welding process and improve the yield rate.

[0024] 2. After the copper sheet is fitted onto the rigid tube, it will detach from the mounting hole along with the rigid tube. If copper sheets are added manually, the efficiency is low and it affects the overall installation efficiency. By opening guide slots on the mounting block, the copper sheets are placed in rows in the guide slots. After the bottom copper sheet is installed and removed, the upper copper sheets will lose support and move down to fill the gap, realizing automatic feeding of copper sheets, which helps to save labor and improve the feeding efficiency of copper sheets. Attached Figure Description

[0025] Figure 1 This is a schematic diagram used in the background art to illustrate the structure of rigid pipes and welded joints.

[0026] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0027] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0028] Figure 4 This is a schematic diagram illustrating the structure of the feeding plate in an embodiment of this application.

[0029] Figure 5 yes Figure 4 Enlarged diagram of part B.

[0030] Figure 6 This is a schematic diagram illustrating the structure of the support block in an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Base; 2. Heater; 3. Support base; 31. Support groove; 32. Correction rod; 33. Unloading motor; 4. Feeding plate; 41. Feeding groove; 42. Feeding cylinder; 5. Mounting block; 51. Mounting hole; 511. Brush; 52. Guide plate groove; 6. Support block; 61. Clamping groove; 62. Clamping mechanism; 621. Clamping plate; 622. Clamping cylinder; 63. Positioning motor; 7. Storage box; 8. Concave groove; 101. Rigid pipe; 102. Welding head; 103. Through hole; 104. Copper sheet. Detailed Implementation

[0032] The present application will be further described in detail below with reference to all the accompanying drawings.

[0033] This application discloses a welding device for rigid pipes and their welding heads.

[0034] Reference Figure 2 and Figure 3 A welding device for a rigid tube and its welding head includes a base 1, on which a heater 2 is installed. The heater 2 is used to electrically heat and melt a copper sheet 104 to achieve welding between the rigid tube 101 and the welding head 102. During the welding process, it is difficult for the welding head 102 to maintain a coaxial state with the rigid tube 101 throughout, which affects the welding yield. A support base 3 is connected to the base 1. A support groove 31 is provided on the support base 3. The shape and size of the support groove 31 are adapted to the welding head 102. During welding, the welding head 102 is embedded in the support groove 31. A correction rod 32 is vertically connected to the bottom wall of the support groove 31. When the welding head 102 is embedded in the support groove 31, the correction rod 32 passes through a through hole 103. The outer diameter of the cross-section of the alignment rod 32 is matched with the inner diameter of the through hole 103 and the inner diameter of the rigid tube 101. When the rigid tube 101 is fitted onto the alignment rod 32, the welding head 102 and the rigid tube 101 are coaxial. Welding can begin by starting the heater 2. During the welding process, the welding head 102 and the rigid tube 101 will remain coaxial, which helps to improve the yield rate.

[0035] Reference Figure 2 and Figure 4Before welding, copper sheets 104 need to be fitted onto one end of the outer wall of the rigid tube 101. This process is generally done manually, which is labor-intensive and has low installation efficiency. A horizontally arranged feeding plate 4 is installed on the base 1. The feeding plate 4 has several parallel feeding grooves 41, the shape of which is adapted to the rigid tube 101. A mounting block 5 is slidably connected to the base 1, and the sliding direction of the mounting block 5 is parallel to the length direction of the feeding grooves 41. The mounting block 5 has several mounting holes 51 on the side of the mounting plate 4 that correspond one-to-one with the feeding grooves 41. The mounting holes 51 are coaxially arranged with the rigid tube 101 located on the corresponding feeding groove 41. A support block 6 is provided on the side of the feeding plate 4 away from the mounting block 5. The copper sheet 104 is coaxially placed in the mounting hole 51 and fits against the bottom wall of the mounting hole 51. The mounting block 5 is slid towards the support block 6. The support block 6 provides support after it abuts against the rigid tube 101. This enables the rapid batch installation of the copper sheet 104 and helps to improve the efficiency of the copper sheet 104 installation.

[0036] Reference Figure 2 and Figure 4 After the copper sheet 104 is fitted onto the rigid tube 101, it will be removed along with the rigid tube 101. If copper sheets 104 are manually added into the mounting hole 51, the speed is slow and it will affect the installation efficiency of the copper sheet 104. The top of the mounting block 5 has a guide groove 52, which is vertically set and communicates with the mounting hole 51. The shape and size of the guide groove 52 are adapted to the copper sheet 104, and the copper sheet 104 can move within the guide groove 52. The copper sheets 104 are placed vertically in a row in the guide groove 52. After the bottom copper sheet 104 is installed and removed with the rigid tube 101, the upper copper sheets 104 will lose support and fall under the action of gravity to fill the gap, realizing automatic feeding of copper sheets 104, which helps to save labor and improve the feeding efficiency of copper sheets 104.

[0037] Reference Figure 2 and Figure 5 The new copper sheet 104 enters the mounting hole 51 to fill the gap by falling independently. This usually involves some bouncing and lacks sufficient support, potentially causing it to tip over within the mounting hole 51. In this case, the copper sheet 104 cannot be properly fitted and installed, affecting the welding process. A brush 511 is installed on the inner wall of the mounting hole 51, surrounding it. The distance between the brush 511 and the bottom wall of the mounting hole 51 is adapted to the thickness of the copper sheet 104. The brush 511 provides some support for the copper sheet 104 without obstructing the rigid tube 101 from driving the copper sheet 104 horizontally, helping to maintain the upright position of the copper sheet 104 and ensuring the stable installation of the copper sheet 104.

[0038] Reference Figure 4Before welding, workers need to neatly place the rigid tubes 101 one by one into the loading trough 41 before proceeding with subsequent processes, which limits the loading speed. A storage box 7 is installed on the base 1, and the rigid tubes 101 before welding are stored in the storage box 7 in the same direction. The top and bottom of the storage box 7 are open. The loading plate 4 is slidably connected to the base 1, and its sliding direction is perpendicular to the length direction of the rigid tubes 101 in the storage box. A loading cylinder 42 is installed on the base 1, and the telescopic shaft of the loading cylinder 42 is fixedly connected to the loading plate 4 to drive the sliding of the loading plate 4. The upper surface of the loading plate 4 abuts against the bottom of the storage box, and the length direction of the loading trough 41 is perpendicular to the sliding direction of the loading plate 4. When loading, the loading plate 4 is slid, so that the loading trough 41 moves to a position facing the bottom of the storage box 7, and the rigid tubes 101 enter the loading trough 41 under their own weight. Then slide the feed plate 4 to align the corresponding feed slot 41 and mounting hole 51, realizing automated batch feeding of rigid tube 101, which helps to improve feeding efficiency.

[0039] Reference Figure 3 , Figure 4 and Figure 6 The support block 6 has clamping grooves 61 that correspond one-to-one with the feeding groove 41. When installing the copper sheet 104 onto the rigid tube 101, the mounting block 5 slides towards the rigid tube 101 and pushes the rigid tube 101 into the clamping groove 61. The bottom wall of the clamping groove 61 abuts against the rigid tube 101 and provides support for the rigid tube 101. After the copper sheet 104 is installed, the mounting block 5 is slid to allow the rigid tube 101 and the copper sheet 104 to be removed from the mounting hole 51. The clamping groove 61 is provided with a clamping mechanism 62, which can clamp and fix the rigid tube 101 in the clamping groove 61. The support block 6 is rotatably connected to the base 1 and its rotation axis is perpendicular to the length direction of the feeding groove 41. A shifting motor 63 is installed on the base 1, and the output shaft of the rotating motor is connected to the support block 6. The support base 3 is located directly below the support block 6. The starting of the shifting motor 63 drives the support block 6 to rotate, so that the end of the rigid tube 101 with the copper sheet 104 is aligned with the support groove 31. The clamping mechanism 62 releases the rigid tube 101, and the rigid tube 101 falls down to abut against the welding head 102. At the same time, the correction rod 32 is embedded in the rigid tube 101, realizing the automatic batch docking of the rigid tube 101 and the welding head 102.

[0040] Reference Figure 2 and Figure 6The clamping mechanism 62 includes two clamping plates 621, which are slidably connected to the support block 6 and located within the clamping groove 61. The support block 6 is equipped with a clamping cylinder 622 for driving the clamping plates 621 to slide. The telescopic shaft of the clamping cylinder 622 is connected to the support block 6. When the rigid tube 101 enters the clamping groove 61, the telescopic shaft of the clamping cylinder 622 extends, causing the clamping plates 621 at both ends to move closer to the rigid tube 101 and clamp the rigid tube 101, thus achieving the clamping and fixing of the rigid tube 101. After the rigid tube 101 is transferred to the correct position, the telescopic shaft of the clamping cylinder 622 retracts, causing the clamping plates 621 to disengage from the rigid tube 101, thereby releasing the rigid tube 101.

[0041] Reference Figure 2 and Figure 3 After welding, manual unloading is inefficient. The support base 3 is rotatably connected to the base 1, and the base 1 is equipped with an unloading motor 33, which drives the rotation of the support base 3. A concave groove 8 is installed on the base 1, located below the support base 3. After the rigid tube 101 and the welding head 102 are welded, the unloading motor 33 drives the support base 3 to rotate, causing the support groove 31 to rotate to a downward tilting angle. Under their own weight, the rigid tube 101 and the welding head 102 fall into the concave groove 8, where the rigid tube 101 gathers in parallel, thus achieving automatic batch unloading.

[0042] The implementation principle of a welding device for a rigid pipe and its welding head according to an embodiment of this application is as follows: Before welding, the rigid pipe 101 is placed in the storage box 7 in the same direction, and the welding head 102 is embedded in the support groove 31. The support seat 3 is slidably set, and the welding head 102 is embedded in the support groove 31 before welding. The feeding plate 4 is slid so that the feeding groove 41 slides to the position facing the bottom of the storage box 7. The rigid pipe 101 enters the feeding groove 41 under its own gravity. The feeding plate 4 is slid further to align the corresponding feeding groove 41 with the mounting hole 51. The sliding mounting block 5 installs the copper sheet 104 onto one end of the rigid tube 101. The clamping mechanism 62 clamps and fixes the rigid tube 101 in the clamping groove 61. Rotating the starting shift motor 63 drives the support block 6 to rotate, so that the end of the rigid tube 101 with the copper sheet 104 is aligned with the support groove 31. The clamping mechanism 62 releases the rigid tube 101, causing it to fall and abut against the welding head 102. At the same time, the correction rod 32 is embedded in the rigid tube 101. The correction rod 32 is fixedly connected to the support base 3, and the length direction of the correction rod 32 is perpendicular to the upper surface of the support base 3. At this time, the welding head 102 and the rigid tube 101 are in a stable coaxial state. The heater 2 can be started to begin the welding work. This helps to maintain the coaxial state between the welding head 102 and the rigid tube 101 during the welding process and improves the yield.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A welding apparatus for a rigid pipe and its weld joint, comprising a base (1), wherein a heater (2) for melting copper sheet (104) is provided on the base (1), characterized in that: The base (1) is provided with a support seat (3) for supporting the welding head (102). The support seat (3) is provided with a support groove (31) that is adapted to the shape and size of the welding head (102). The support groove (31) is provided with a correction rod (32) for connecting the welding head (102) and the rigid tube (101) in series. The outer diameter of the cross section of the correction rod (32) is adapted to the inner diameter of the through hole (103). When the welding head (102) is embedded in the support groove (31), the correction rod (32) passes through the through hole (103). When the rigid tube (101) is sleeved on the correction rod (32), the welding head (102) and the rigid tube (101) are coaxial. The base (1) is provided with a feeding plate (4), and the feeding plate (4) is provided with a feeding groove (41) adapted to the hard tube (101). The base (1) is slidably connected with an installation block (5) for fitting a copper sheet (104) onto the hard tube (101), and the sliding direction of the installation block (5) is parallel to the length direction of the feeding groove (41). The side of the installation block (5) close to the feeding plate (4) is provided with an installation hole (51), and the installation hole (51) is coaxially arranged with the hard tube (101) located on the feeding groove (41). The side of the feeding plate (4) away from the installation block (5) is provided with a support block (6) that provides a support point for the hard tube (101) when fitting the copper sheet (104). The top of the mounting block (5) is provided with a guide groove (52) for automatic feeding of copper sheet (104). The guide groove (52) is connected to the mounting hole (51) and the shape and size of the guide groove (52) are adapted to the copper sheet (104). The support block (6) has clamping grooves (61) that correspond one-to-one with the feeding groove (41). The clamping groove (61) is provided with a clamping mechanism (62) for clamping the hard tube (101). The support block (6) is rotatably connected to the base (1) and its rotation axis is perpendicular to the length direction of the feeding groove (41). The base (1) is provided with a shifting motor (63) for driving the support block (6) to rotate. The support seat (3) is located directly below the support block (6).

2. The welding equipment for a rigid pipe and its welded joint according to claim 1, characterized in that: The mounting hole (51) is provided with a brush (511) to prevent the copper sheet (104) from tipping over. The brush (511) is arranged around the inner wall of the mounting hole (51), and the distance between the brush (511) and the bottom wall of the mounting hole (51) is adapted to the thickness of the copper sheet (104).

3. The welding equipment for a rigid pipe and its welded joint according to claim 1, characterized in that: The base (1) is provided with a storage box (7) for storing hard tubes (101). The hard tubes (101) inside the storage box (7) are arranged parallel to each other. The bottom end of the storage box (7) is open. The feeding plate (4) is slidably connected to the base (1) and the sliding direction of the feeding plate (4) is perpendicular to the length direction of the hard tubes (101) in the storage box (7). The base (1) is provided with a feeding cylinder (42) for driving the feeding plate (4) to slide. The upper surface of the feeding plate (4) abuts against the storage box (7). The length direction of the feeding groove (41) is perpendicular to the sliding direction of the feeding plate (4).

4. The welding equipment for a rigid pipe and its welded joint according to claim 1, characterized in that: The clamping mechanism (62) includes two clamping plates (621) slidably connected to the support block (6). The clamping plates (621) are disposed in the clamping groove (61). When the rigid tube (101) enters the clamping groove (61), the two clamping plates (621) are respectively located at both ends of the rigid tube (101) and the sliding direction of the clamping plates (621) is perpendicular to the length direction of the rigid tube (101). The support block (6) is provided with a clamping cylinder (622) for driving the clamping plates (621) to slide.

5. The welding equipment for a rigid pipe and its welded joint according to claim 1, characterized in that: The support base (3) is rotatably connected to the base (1). The base (1) is provided with a discharge motor (33) for driving the support base (3) to rotate. The base (1) is provided with a concave groove (8) for collecting the welded hard tube (101). The concave groove (8) is located below the support base (3).

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