Nozzle shell welding positioning tool

Abstract

The utility model provides a welding and positioning tool for a nozzle shell. The welding and positioning tool comprises a positioning mechanism and a sliding block, and the positioning mechanism comprises a circular truncated cone and two vertical positioning pins vertically arranged on the top face of the circular truncated cone; the number of the sliding blocks is two, the sliding blocks are arranged on the two sides of the plane where the two positioning pins are located, and the sliding blocks are arranged in a reciprocating motion mode in the direction perpendicular to the plane where the two positioning pins are located. The sliding blocks are each provided with a guide column in a penetrating mode, the axes of the two guide columns intersect with the axes of the corresponding positioning pins, preset included angles are formed between the axes of the guide columns and the lower ends of the axes of the corresponding positioning pins, the vertical faces where the axes of the guide columns are located are parallel to the moving tracks of the sliding blocks, and the guide columns are movably arranged along the axes. A positioning rod is coaxially arranged at the end, facing the positioning pin, of the guide column, a limiting block is arranged at the junction of the positioning rod and the guide column, and a reset spring is arranged between the limiting block and the sliding block. According to the tool, the nozzle shell and the connecting pipes on the two sides can be effectively positioned, subsequent welding operation is facilitated, the positioning mode is simple, the positioning precision is high, and the welding efficiency is improved while the welding yield is guaranteed.

Description

Technical Field

[0001] The present application belongs to the field of welding technology, and in particular relates to a nozzle shell welding positioning tool. Background Art

[0002] The nozzle is one of the most important components of the combustion equipment. The quality of the nozzle shell directly affects the atomization effect of the liquid fuel. Figure 2 As shown, a nozzle housing 5 of the prior art includes a connecting pipe 6, a connecting cavity 7, etc. A positioning groove 51 is provided at the top of the connecting cavity 7 in the vertical direction, two positioning holes 52 are provided in the middle of the positioning groove 51, and the connecting pipe 6 is welded to the two sides of the connecting cavity 7. The connecting pipes 6 of a qualified nozzle housing 5 must match the positions of the corresponding positioning holes 52, that is, the axes of the two connecting pipes 6 intersect with the axes of the corresponding positioning holes 52, and there is a predetermined angle between the axes of the connecting pipes 6 and the axes of the corresponding positioning holes 52. The connecting pipes 6 must also be at the correct height position, so special attention needs to be paid when welding the connecting pipes 6.

[0003] In the prior art, when welding the connecting pipe 6, it is necessary to first position and then weld on one side of the connecting cavity 7, and then perform the same operation on the other side of the connecting cavity 7. This welding method cannot effectively position and weld the connecting pipes 6 on both sides at the same time, the positioning process is cumbersome and the accuracy cannot be effectively guaranteed, making the entire welding process inefficient. Utility Model Content

[0004] In order to solve the deficiencies of the above-mentioned prior art, the present application provides a nozzle housing welding positioning tool to achieve effective positioning of the nozzle housing and the connecting pipes on both sides to facilitate subsequent welding operations. The positioning method is simple and the positioning accuracy is high, which ensures the welding yield while improving the welding efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technologies:

[0006] A nozzle shell welding positioning tool, comprising:

[0007] The positioning mechanism comprises a truncated table and two vertical positioning pins vertically arranged on the top surface of the truncated table;

[0008] There are two sliding blocks, which are respectively arranged on both sides of the plane where the two positioning pins are located, and the sliding blocks are reciprocatingly arranged in a direction perpendicular to the plane where the two positioning pins are located; each sliding block is penetrated by a guide column, the axes of the two guide columns respectively intersect with the axes of the corresponding positioning pins, and there is a predetermined angle between the axes of the guide columns and the lower ends of the axes of the corresponding positioning pins, the vertical plane where the axes of the guide columns are located is parallel to the moving track of the sliding block, and the guide columns are arranged to move along the axes;

[0009] A positioning rod is coaxially arranged at one end of the guide column facing the positioning pin, a limiting block is arranged at the junction between the limiting block and the guide column, and a return spring is arranged between the limiting block and the sliding block.

[0010] Furthermore, the truncated cone is arranged above a base through a support seat, and two movable plates are arranged on both sides of the support seat corresponding to the truncated cone. The lower end of the movable plate is rotatably connected to the top surface of the support seat, and the axis of rotation is consistent with the tangent direction of the truncated cone. The movable plate is staggered along the circumferential position of the truncated cone and the axis of the guide column, and a clamping block is provided on the side opposite to the upper end of the movable plate.

[0011] Furthermore, a rotating shaft is formed at the lower end of the movable plate, a rotating seat is arranged on the top surface of the support seat, the rotating shaft is fitted in the rotating seat, a torsion spring is sleeved on the rotating shaft, and when the torsion spring is in a natural state, the movable plate is in a vertical state.

[0012] Furthermore, the side of the top surface of the clamping block facing the locating pin is an inclined surface, and when the torsion spring is in a natural state, the downward projection of the clamping block along the axis of the locating pin is located on the top surface of the locating pin.

[0013] Furthermore, two sets of linear mechanisms are arranged on the support seat, which are used to drive two sliding blocks respectively.

[0014] Furthermore, the other ends of the two guide columns are respectively movably connected to a telescopic rod, the two telescopic rods are parallel to each other and are both inserted in a connecting rod, the two telescopic rods are parallel to the moving direction of the sliding block, and the two telescopic rods are movable along the length direction; when the connecting rod moves along the axial direction of the positioning pin, the end of the telescopic rod is moved along the length direction of the guide column, or the end of the guide column is moved along the length direction of the telescopic rod.

[0015] Furthermore, a pin hole is provided at the other end of the guide column along the axial direction of the guide column, and a sliding pin is provided at one end of the telescopic rod, and the sliding pin is fitted in the pin hole.

[0016] The beneficial effects of the utility model are:

[0017] 1. The nozzle housing is accurately positioned by setting the round table and the positioning pin in the positioning mechanism, and the nozzle housing is conveniently placed in the positioning mechanism under the action of the rotating seat, the movable plate, the clamping block and the torsion spring, and is clamped by the movable plate and the clamping block;

[0018] 2. By setting the relationship between the positioning pin axis, the guide column axis, the positioning column axis, and the planes where the axes are located, and under the action of the linear mechanism, the limit block, and the reset spring, the connecting pipes on both sides can approach the connecting cavity in the correct trajectory, accurately locate the welding positions on both sides of the connecting cavity, and the positioning rod can be withdrawn after welding;

[0019] 3. By setting the telescopic rod and the connecting rod and cooperating with the hole pin at the end of the telescopic rod moving along the length direction of the guide column, the function of separating the positioning rods and the connecting pipes on both sides at the same time is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the tooling embodiment of the present application.

[0021] Figure 2 This is a schematic diagram of the finished structure of the nozzle housing.

[0022] Figure 3 It is a schematic diagram of the state of the nozzle housing of the embodiment of the present application when it is placed in the positioning mechanism.

[0023] Figure 4 It is a schematic diagram of the welding state of the nozzle shell in the embodiment of the present application.

[0024] Figure markings: 1-base, 11-support seat, 2-positioning mechanism, 21-positioning pin, 22-movable plate, 221-clamping block, 23-torsion spring, 24-rotating seat, 25-round table, 31-positioning rod, 32-limiting block, 33-reset spring, 34-sliding block, 35-guide column, 36-pin hole, 37-sliding pin, 38-telescopic rod, 39-connecting rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0026] The embodiment of the present application provides a nozzle housing welding positioning tool, such as Figure 1 The figure shows a schematic diagram of the main structure of the tooling, including a positioning mechanism 2, a sliding block 34, etc. The positioning mechanism 2 includes a truncated cone 25 and two vertical positioning pins 21 vertically arranged on the top surface of the truncated cone 25; there are two sliding blocks 34, which are respectively arranged on both sides of the plane where the two positioning pins 21 are located, and the sliding blocks 34 are reciprocatingly arranged in a direction perpendicular to the plane where the two positioning pins 21 are located; each sliding block 34 is penetrated by a guide column 35, the axes of the two guide columns 35 intersect with the axes of the corresponding positioning pins 21 respectively, and there is a predetermined angle between the axes of the guide columns 35 and the lower ends of the axes of the corresponding positioning pins 21, the vertical plane where the axes of the guide columns 35 are located is parallel to the moving trajectory of the sliding block 34, and the guide column 35 is arranged to move along the axis; a positioning rod 31 is coaxially provided at one end of the guide column 35 facing the positioning pin 21, and a limit block 32 is provided at the junction between the limit block 32 and the guide column 35, and a return spring 33 is provided between the limit block 32 and the sliding block 34.

[0027] Specifically, Figure 1 and Figure 4 As shown, when the nozzle housing 5 without the connecting pipe 6 welded thereto is placed in the tooling, the truncated cone 25 in the positioning mechanism 2 cooperates with the positioning groove 51 opened at the top of the connecting chamber 7, and the two positioning pins 21 arranged on the top surface of the truncated cone 25 cooperate with the two positioning holes 52 opened in the middle of the positioning groove 51 to limit the freedom of the nozzle housing 5 without the connecting pipe 6 welded thereto in the positioning mechanism 2, and to keep the nozzle housing 5 in a vertical state at all times; then, one end of the connecting pipe 6 provided with the external thread 61 is sleeved on the positioning rod 31 and abuts against the limiting block 32, and the sliding block 34 brings the connecting pipe 6 closer to the connecting chamber 7 in a direction perpendicular to the plane where the two positioning pins 21 are located, because the positioning rod 31 is coaxially arranged with the guide column 35, and the axes of the two guide columns 35 are separated by The guide column 35 and the guide post 35 are connected to each other by a screw thread 61, and the guide post 35 and the guide post 35 are connected to each other by a screw thread 62. The guide post 35 and the guide post 35 are connected to each other by a screw thread 61. The guide post 35 and the guide post 35 are connected to each other by a screw thread 62, and the guide post 35 and the guide post 35 are connected to each other by a screw thread 62.

[0028] More specifically, Figure 1 As shown, the truncated platform 25 is disposed above a base 1 through a support seat 11. Two movable plates 22 are disposed on both sides of the support seat 11 corresponding to the truncated platform 25. The lower end of the movable plate 22 is rotatably connected to the top surface of the support seat 11. The axis of rotation is consistent with the tangent direction of the truncated platform 25. The circumferential position of the movable plate 22 along the truncated platform 25 is staggered with the axis of the guide column 35. A clamping block 221 is disposed on the opposite side of the upper end of the movable plate 22. Figure 4 As shown, after the nozzle housing 5 without the connecting pipe 6 welded thereto is placed in the positioning mechanism 2, the movable plate 22 rotates so that the corner of the bottom of the communicating cavity 7 is just caught in the angle formed by the clamping block 221 and the movable plate 22, thereby limiting the movement of the nozzle housing 5 in the vertical direction. Because the circumferential position of the movable plate 22 along the truncated table 25 is offset from the axis of the guide column 35, the arrangement of the movable plate 22 will not hinder the welding of the connecting pipe 6.

[0029] More specifically, Figure 4As shown, a rotating shaft is formed at the lower end of the movable plate 22, a rotating seat 24 is arranged on the top surface of the support seat 11, the rotating shaft is fitted in the rotating seat 24, a torsion spring 23 is sleeved on the rotating shaft, when the torsion spring 23 is in a natural state, the movable plate 22 is in a vertical state, and the setting of the torsion spring 23 can realize that after the nozzle shell 5 without the welding connecting pipe 6 is placed in the positioning mechanism 2, the movable plate 22 automatically clamps the bottom corner of the connecting cavity 7.

[0030] More specifically, in order to facilitate the placement of the nozzle housing 5, a guiding function is added to the clamping block 221, that is, the top surface of the clamping block 221 facing the positioning pin 21 is set as an inclined surface. When the torsion spring 23 is in a natural state, the downward projection of the clamping block 221 along the axis of the positioning pin 21 is located on the top surface of the positioning pin 21, as shown in FIG. Figure 3 and Figure 4 As shown, when the nozzle housing 5 is placed, the corners at the top of the connecting chamber 7 contact the inclined surface of the clamping block 221 and move along the inclined surface toward the positioning pin 21. At the same time, the connecting chamber 7 causes the movable plate 22 to rotate and open to both sides until the nozzle housing 5 is positioned. The torsion spring 23 returns to its natural state, and the movable plate 22 returns to its natural state. At this time, the corners at the bottom of the connecting chamber 7 are also just clamped by the clamping block 221 and the movable plate 22.

[0031] Specifically, Figure 1 As shown, in order to drive the sliding block 34 to reciprocate in a direction perpendicular to the plane where the two positioning pins 21 are located, two sets of linear mechanisms 4 are arranged on the support seat 11, and the movable ends of the linear mechanisms 4 face the corresponding sliding blocks 34 and are connected to the corresponding sliding blocks 34 through the movable ends. The linear mechanisms 4 are linear cylinders or linear motors.

[0032] Specifically, the other ends of the two guide columns 35 are respectively movably connected to a telescopic rod 38. The two telescopic rods 38 are parallel to each other and are both inserted in a connecting rod 39. The two telescopic rods 38 are parallel to the moving direction of the sliding block 34, and the two telescopic rods 38 are movable along the length direction; when the connecting rod 39 moves along the axial direction of the positioning pin 21, the end of the telescopic rod 38 is moved along the length direction of the guide column 35, or the end of the guide column 35 is moved along the length direction of the telescopic rod 38.

[0033] More specifically, in this embodiment, the end of the telescopic rod 38 is arranged to move along the length direction of the guide column 35, such as Figure 1As shown, the other end of the guide column 35 is provided with a pin hole 36 along the axial direction of the guide column 35, and a sliding pin 37 is provided at one end of the telescopic rod 38, and the sliding pin 37 is fitted in the pin hole 36. When welding is completed, the connecting rod 39 is moved along the axial direction of the positioning pin 21, and the sliding pin 37 will fit in the pin hole 36 and move in a direction away from the sliding block 34. At this time, a component of the force of the sliding pin 37 on the pin hole 36 causes the guide column 35 to move along its axis, and the positioning rod 31 is separated from the end of the connecting pipe 6 provided with the external thread 61; a component of the reaction force acting on the sliding pin 37 causes the end of the telescopic rod to move along the length direction of the guide column 35, so that the positioning rod 31 is separated from the connecting pipe 6 on both sides at the same time, saving time and improving welding efficiency.

[0034] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.

Claims

1. A nozzle housing welding positioning tool, characterized in that: include: The positioning mechanism (2) comprises a truncated table (25) and two vertical positioning pins (21) vertically arranged on the top surface of the truncated table (25); Two sliding blocks (34) are respectively arranged on both sides of the plane where the two positioning pins (21) are located, and the sliding blocks (34) are arranged to reciprocate in a direction perpendicular to the plane where the two positioning pins (21) are located; each sliding block (34) is penetrated by a guide column (35), the axes of the two guide columns (35) respectively intersect with the axes of the corresponding positioning pins (21), and there is a predetermined angle between the axes of the guide columns (35) and the lower ends of the axes of the corresponding positioning pins (21), the vertical plane where the axes of the guide columns (35) are located is parallel to the moving track of the sliding block (34), and the guide columns (35) are arranged to move along their own axes; A positioning rod (31) is coaxially provided at one end of the guide column (35) facing the positioning pin (21), a limiting block (32) is provided at the junction between the limiting block (32) and the guide column (35), and a return spring (33) is provided between the limiting block (32) and the sliding block (34).

2. The nozzle housing welding positioning tool according to claim 1, characterized in that: The truncated platform (25) is arranged above a base (1) via a support seat (11). Two movable plates (22) are arranged on both sides of the support seat (11) corresponding to the truncated platform (25). The lower end of the movable plate (22) is rotatably connected to the top surface of the support seat (11). The axis of rotation is consistent with the tangent direction of the truncated platform (25). The movable plate (22) is arranged along the circumference of the truncated platform (25) and is offset from the axis of the guide column (35). A clamping block (221) is arranged on the side opposite to the upper end of the movable plate (22).

3. The nozzle housing welding positioning tool according to claim 2, characterized in that: A rotating shaft is formed at the lower end of the movable plate (22), a rotating seat (24) is arranged on the top surface of the support seat (11), the rotating shaft is fitted in the rotating seat (24), a torsion spring (23) is sleeved on the rotating shaft, and when the torsion spring (23) is in a natural state, the movable plate (22) is in a vertical state.

4. A nozzle housing welding positioning tool according to claim 3, characterized in that: The side of the top surface of the clamping block (221) facing the positioning pin (21) is an inclined surface, and when the torsion spring (23) is in a natural state, the downward projection of the clamping block (221) along the axis of the positioning pin (21) is located on the top surface of the positioning pin (21).

5. The nozzle housing welding positioning tool according to claim 2, characterized in that: Two sets of linear mechanisms (4) are arranged on the support seat (11), respectively used to drive two sliding blocks (34).

6. The nozzle housing welding positioning tool according to claim 1, characterized in that: The other ends of the two guide posts (35) are movably connected to a telescopic rod (38), respectively. The two telescopic rods (38) are parallel to each other and are inserted into a connecting rod (39). The two telescopic rods (38) are parallel to the moving direction of the sliding block (34), and the two telescopic rods (38) are movable along the length direction. When the connecting rod (39) moves along the axial direction of the positioning pin (21), the end of the telescopic rod (38) moves along the length direction of the guide post (35), or the end of the guide post (35) moves along the length direction of the telescopic rod (38).

7. The nozzle housing welding positioning tool according to claim 6, characterized in that: The other end of the guide column (35) is provided with a pin hole (36) along the axial direction of the guide column (35), and one end of the telescopic rod (38) is provided with a sliding pin (37), which is fitted in the pin hole (36).

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