A device for automatic mechanical welding of end caps and pipes

Abstract

The utility model discloses a device for automatic mechanical welding of end caps and pipes, belonging to the field of pressure vessel manufacturing. The device includes a positioner and a recovery unit; the positioner is used as the chassis of the automatic mechanical welding device, and a crossbar for fixing the end cap is provided on the positioner; a central positioning rod for passing through the end cap is vertically fixed at the center of the crossbar, and the crossbar includes eight rods extending outward from the central positioning rod; a plurality of through-length holes are provided at intervals on each rod of the crossbar, for fixing ends of different sizes; the recovery unit is arranged on one side of the flux outlet of the positioner, and includes a conical bucket and a flux recovery box; a screen for screening flux is arranged on the upper surface of the conical bucket, and a flux recovery box is arranged at the bottom of the conical bucket. The device is suitable for automatic welding, can realize automatic continuous operation, improve welding efficiency, and reduce the probability of welding defects; in addition, the device is also provided with a flux recovery unit, which can reduce production costs.

Description

Technical Field

[0001] The utility model belongs to the field of pressure vessel manufacturing, and in particular relates to a device for automatic mechanical welding of a head and a connecting pipe. Background Art

[0002] The end cap is the end cover on the pressure vessel, which is used to seal the container to prevent leakage of the internal medium. The pipe is a short pipe leading out of the opening of the pressure vessel, which is used as the inlet and outlet of materials, as well as the manhole and hand hole. The end cap and pipe can be connected by direct welding or detachable flange connection.

[0003] At present, the welding of heads and pipes is mainly done by manual welding. However, this method has some problems. First, manual welding is time-consuming and labor-intensive. When encountering some large heads and pipes, it takes a welder a week to complete the welding of a head. Secondly, manual welding has high requirements on the welding level of the welder, and the quality of manual welding is difficult to guarantee. After welding, various welding defects are prone to occur in the weld. Therefore, it is urgent to develop an automated device that can be used for welding large heads and pipes. Utility Model Content

[0004] The utility model aims to solve the deficiencies in the prior art and provide a device for automatic mechanical welding of a head and a pipe.

[0005] The specific technical solutions adopted by this utility model are as follows:

[0006] The utility model provides a device for automatic mechanical welding of end caps and pipes, comprising a positioner and a recovery unit;

[0007] The positioner is used as the chassis of the automated mechanical welding device, and a crossbar for fixing the end cap is provided on the positioner; a center positioning rod for passing through the end cap is vertically fixed at the center of the crossbar, and the crossbar includes eight rods extending outward from the center positioning rod; a plurality of through-length holes are provided at intervals on each rod of the crossbar for fixing ends of different sizes;

[0008] The recovery unit is arranged at one side of the flux outlet of the positioner, and comprises a conical bucket and a flux recovery box; a bracket is arranged around the conical bucket; a screen for screening flux is arranged on the upper surface of the conical bucket, and a flux recovery box is arranged at the bottom of the conical bucket.

[0009] Preferably, a ladder is provided on the side of the recovery unit for operators to go up and down.

[0010] Preferably, the flip angle of the positioner is 15° to 30°.

[0011] Preferably, a positioning block is provided in the through-length hole on the cross frame, and the head is fixed to the cross frame by the positioning block.

[0012] Preferably, the cross frame and the head are fixedly connected by bolts.

[0013] Preferably, the length of the rods in the cross is 3.5 to 4.2 m.

[0014] Preferably, the conical bucket, flux recovery box and bracket are all made of Q235B steel.

[0015] Preferably, the crossbar and the center positioning rod are both made of Q235B steel.

[0016] Preferably, the screen is made of stainless steel.

[0017] Preferably, the hole size of the sieve is 10×10 mm.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] Traditional head and pipe welding mainly relies on manual welding, which is easily affected by subjective factors, and the welding efficiency will decrease as the working time increases. However, the device provided by the utility model is suitable for automated welding and can achieve continuous operation. Once the welding parameters are set, the entire working process does not require manual participation, and the welding efficiency remains constant and is not affected by time changes. Compared with traditional manual welding, the device provided by the utility model is used for automated welding, which can reduce the probability of welding defects; in addition, the device is also provided with a flux recovery unit, which can reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the automatic mechanical welding device for sealing heads and connecting pipes provided by the utility model;

[0021] Figure 2 It is a schematic diagram of the recovery unit in the utility model;

[0022] In the figure: ladder 1, conical bucket 2, flux recovery box 3, screen 4, positioner 5, M-shaped frame 6, center positioning rod 7. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below. The technical features in each embodiment of the utility model can be combined accordingly without conflicting with each other.

[0024] like Figure 1 As shown, in a preferred embodiment of the utility model, a device for automatic mechanical welding of end caps and pipes is provided. The device needs to be matched with automatic welding equipment to realize automatic mechanical welding of large end caps and pipes in pressure vessels. The device provided by the utility model includes a positioner 5 and a recovery unit.

[0025] It should be noted that the positioner used in the utility model is a special welding positioner, which is mainly used to adjust the position of the workpiece during the welding process to obtain the ideal welding angle and speed. The positioner makes the workpiece fixed on the worktable reach the required welding or assembly angle through the rotation and flipping of the worktable. The rotation of the worktable usually adopts the stepless speed regulation of the frequency converter to achieve high-precision speed regulation.

[0026] In order to ensure the welding quality, in this embodiment, the flip angle of the positioner 5 is set to 15° to 30°, so that it can cooperate with the cross-arm submerged arc welding machine to achieve better automation and flexibility welding. Those skilled in the art can select a suitable flip angle of the positioner according to actual working conditions.

[0027] In the device of the utility model, the positioner 5 is used as the chassis of the automated mechanical welding device, on which a crossbar 6 is fixed. A central positioning rod 7 is vertically fixed to the center of the crossbar 6, so that the end cap can pass through the central positioning rod 7 and rest on the crossbar 6.

[0028] In the device of the utility model, the crossbar 6 includes eight rods extending outward from the central positioning rod 7, and the clamps between each rod are 45 degrees. In order to fix the heads of different sizes, a plurality of through-holes are provided at intervals on each rod of the crossbar 6. Positioning blocks are provided in the through-holes on the crossbar 6, and the heads of different sizes are fixed on the crossbar 6 by the positioning blocks. In this embodiment, after the bolts of matching sizes are passed through the through-holes and the positioning blocks, the heads are fixed on the crossbar 6 by bolt connection.

[0029] In this embodiment, the length of the rods in the crossbar 6 is set to 4.2 m, that is, the maximum diameter of the crossbar 6 is 4.2 m. Those skilled in the art can also consider the size of the head to be welded and select a suitable crossbar 6 structure.

[0030] In the device of the utility model, the recovery unit is arranged at one side of the flux outlet of the positioner 5, and includes a conical bucket 2 and a flux recovery box 3; a bracket is arranged around the conical bucket 2 so that the bottom of the conical bucket 2 is suspended. The flux recovery box 3 is arranged at the bottom outlet of the conical bucket 2. A screen 4 for screening flux is arranged on the upper surface of the conical bucket 2.

[0031] In order to facilitate workers to go up and down and clean the inside of the conical bucket 2 or the screen 4, the present embodiment provides a ladder 1 for operators to go up and down on the side of the recovery unit. Figure 2 shown.

[0032] In the field of pressure vessel manufacturing, the flux used in the process of welding the end cap and the pipe generally depends on the welding method and the type of material used. In this embodiment, the material of the screen 4 is stainless steel with more stable performance, and the hole size of the screen 4 is set to 10×10 mm. Those skilled in the art can select a reasonable screen according to the type of flux used.

[0033] It should be noted that in this embodiment, the conical bucket 2, the flux recovery box 3, the bracket, the crossbar 6 and the center positioning rod 7 are all made of Q235B steel. Q235B steel is a very common carbon structural steel, which is widely used in various buildings and projects. It has high tensile strength, can withstand large loads, and is easy to weld. Those skilled in the art may also consider specific working conditions and select conical bucket 2, flux recovery box 3, bracket, crossbar 6 and center positioning rod 7 of other materials.

[0034] It should be noted that the automated welding equipment used in this embodiment is a cross-arm submerged arc welding machine. The cross-arm submerged arc welding machine has a cross-shaped mechanical arm that can move in multiple directions to meet the needs of different welding positions.

[0035] In another preferred embodiment of the present invention, a method for welding a head and a pipe using the above device is provided, which is specifically as follows:

[0036] S1: Lift the end cap to the corresponding position of the cross-shaped frame and fix it, and install the pipe to the corresponding position of the end cap in advance. Adjust the cross arm of the cross arm submerged arc welding machine to align the welding gun head with the weld, and ensure that the flux can fall into the conical bucket.

[0037] S2: According to the welding requirements, preset the voltage of the welding machine and the turning speed of the positioner, confirm that the welding conditions meet the requirements of the welding process card, and start welding. After welding is completed, check whether the weld is complete and defect-free, and then remove the head for subsequent production steps.

[0038] Traditional head and pipe welding mainly relies on manual welding, which is easily affected by subjective factors, and the welding efficiency will decrease as the working time increases. However, the device provided by the utility model is suitable for automatic welding and can realize continuous operation. Once the welding parameters are set, the entire working process does not require manual participation, and the welding efficiency remains constant and is not affected by time changes.

[0039] Compared with traditional manual welding, the device provided by the utility model is used for automatic welding, which can reduce the probability of welding defects; in addition, the device is also provided with a flux recovery unit, which can reduce production costs.

[0040] The above-described embodiment is only a preferred solution of the present invention, but it is not intended to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

1. A device for automatic mechanical welding of end caps and pipes, characterized in that: It includes a positioner (5) and a recovery unit; The positioner (5) serves as a chassis of the automated mechanical welding device, and is provided with a crossbar (6) for fixing the end cap; a center positioning rod (7) for passing through the end cap is vertically fixed at the center of the crossbar (6), and the crossbar (6) includes eight rods extending outward from the center positioning rod (7); a plurality of through-length holes are provided at intervals on each rod of the crossbar (6) for fixing the end caps of different sizes; The recovery unit is arranged at one side of the flux outlet of the positioner (5), and comprises a conical bucket (2) and a flux recovery box (3); a bracket is arranged around the conical bucket (2); a screen (4) for screening the flux is arranged on the upper surface of the conical bucket (2), and a flux recovery box (3) is arranged at the bottom of the conical bucket (2).

2. The device for automatic mechanical welding of end caps and pipes according to claim 1 is characterized in that: A ladder (1) is arranged on the side of the recovery unit for operators to go up and down.

3. The device for automatic mechanical welding of end caps and pipes according to claim 1 is characterized in that: The turning angle of the positioner (5) is 15° to 30°.

4. The device for automatic mechanical welding of end caps and pipes according to claim 1 is characterized in that: A positioning block is provided in the through-length hole on the crossbar (6), and the sealing head is fixed on the crossbar (6) via the positioning block.

5. The device for automatic mechanical welding of end caps and pipes according to claim 1 is characterized in that: The crossbar (6) and the end cap are fixedly connected by bolts.

6. The device for automatic mechanical welding of end caps and pipes according to claim 1 is characterized in that: The length of the rods in the cross (6) is 3.5-4.2 m.

7. The device for automatic mechanical welding of end caps and pipes according to claim 1 is characterized in that: The conical bucket (2), the flux recovery box (3) and the bracket are all made of Q235B steel.

8. The device for automatic mechanical welding of end caps and pipes according to claim 1 is characterized in that: The crossbar (6) and the center positioning rod (7) are both made of Q235B steel.

9. The device for automatic mechanical welding of end caps and pipes according to claim 1, characterized in that: The material of the screen (4) is stainless steel.

10. The device for automatic mechanical welding of end caps and pipes according to claim 1, characterized in that: The hole size of the sieve (4) is 10×10 mm.

Images