A welding machine for instrument manufacturing

Abstract

The invention discloses a welding machine for instrument manufacturing, which belongs to the technical field of instrument component welding, and comprises a welding base on which a multi-degree-of-freedom laser welding robot is installed, a manufacturing station plate is arranged on one side of the welding base, a supporting semi-axle body is fixedly arranged on the manufacturing station plate, a positioning adjustment member for positioning and clamping a spring tube is arranged on the supporting semi-axle body, a lateral push column for conveying the spring tube is fixedly connected to the end of the supporting semi-axle body, and an electric control push member is arranged inside the lateral push column for pushing the spring tube forward for conveying. The invention realizes the conveying of the spring tube through the lateral push column, and positions it during the conveying process, realizes the clamping and limiting of the spring tube through the action of the inclined surface clamping plate, ensures the accuracy of the position of the spring tube, realizes the limiting of the rotation angle of the spring tube through the blocking end block and the injection joint thereon, ensures that it can be in close contact with the base to be welded, and significantly improves the welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of instrument component welding, in particular to a welding machine for instrument manufacturing. Background Art

[0002] The spring tube pressure gauge is a common pressure detection instrument. It mainly realizes detection through the internal spring tube. The spring tube produces elastic deformation under the pressure of the inner cavity medium. The elastic characteristics of the spring tube are used to convert the pressure into elastic displacement of the free end of the spring tube, which is then amplified by the gear transmission mechanism of the pressure gauge. The pressure gauge will then display the relative value of atmospheric pressure (either high or low).

[0003] Due to the difference in materials, the spring tube and the connecting base cannot be processed as one piece, and welding operations are often required later. During the welding process, the spring tube itself is in the shape of an annular flat tube, which is not convenient to fix during welding. Before welding, the spring tube needs to be accurately connected with the connecting cavity in the connecting base to ensure the quality of fluid connectivity after the spring tube is welded, and the angle of the spring tube after welding needs to be accurate to ensure that the initial distance of its active end is constant and the reading of the pressure gauge is accurate. This results in many interference factors in the welding process of the spring tube, affecting the processing efficiency. The existing welding method mainly uses manual feeding for laser welding, and the quality of the welded product has a large deviation. Based on this, a welding machine for instrument manufacturing is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that during the welding process of the spring tube, the spring tube itself is in the shape of an annular flat tube, which is inconvenient to fix during welding, and the spring tube needs to be accurately connected with the connecting cavity in the connecting base before welding, and a welding machine for instrument manufacturing is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A welding machine for instrument manufacturing, comprising a welding base on which a multi-degree-of-freedom laser welding robot is installed, a manufacturing station plate is arranged on one side of the welding base, a supporting semi-axle body is fixedly arranged on the manufacturing station plate, a positioning adjustment piece for positioning and clamping a spring tube is arranged on the supporting semi-axle body, a lateral pushing column for conveying the spring tube is fixedly connected to the end of the supporting semi-axle body, and an electric-controlled pushing piece is arranged inside the lateral pushing column for pushing the spring tube forward for conveying;

[0007] The manufacturing station plate is respectively connected with a snap-in positioning member and a rotation blocking member through two electric push rods, and the rotation blocking member is provided with an injection joint for injecting inert gas into the spring tube, and the welding base is provided with a feeding seat connected through a transverse conveying device, and the feeding seat is provided with an adapting fixing groove for fixing the base to be welded;

[0008] The positioning adjustment member comprises an inner arc-shaped seat fixedly arranged on the supporting semi-axle body, a blocking ring is arranged at the end of the inner arc-shaped seat, and an outer arc-blocking member for blocking the deformation of the spring tube is fixedly connected to the side wall of the blocking ring.

[0009] Preferably, a feeding groove for feeding the spring tube is provided on the transverse push column, and a guiding strip for guiding the spring tube to adjust its angle is provided at the bottom of the transverse push column.

[0010] Preferably, the electrically controlled pushing member includes an installation groove provided in the transverse pushing column, an electric slide rail is provided in the installation groove, an electric slider is provided on the electric slide rail, a pushing groove penetrating the side wall is provided above the installation groove, a pushing slide rod located in the pushing groove is fixedly connected to the electric slider, and the end of the pushing slide rod is connected to a conveying push ring via an elastic connecting member.

[0011] Preferably, the elastic connecting member includes a fixed arc plate connected to the pushing slide rod, and the fixed arc plate is connected to the conveying push ring through a plurality of abutting telescopic columns. The conveying push ring is sleeved on the transverse pushing column, and applies pressure to the spring tube sleeved on the transverse pushing column to realize the conveyance of the spring tube.

[0012] Preferably, the snap-in positioning member comprises an arc-shaped inclined snap-in plate, the end of the inclined snap-in plate is fixedly connected to an end plate, and the output end of the electric push rod located above is fixedly connected to the end plate.

[0013] Preferably, the rotation blocking member comprises a blocking end block, the injection butt joint is adapted to the end of the spring tube and is fixedly arranged on the blocking end block, and the injection butt joint is externally connected to an inert gas pump through an air pipe;

[0014] The output end of the electric push rod located at the bottom is connected to the blocking end block through a connecting block.

[0015] Preferably, a sealing rubber pad is provided on one side of the adapter fixing groove to block the air port of the base to be welded.

[0016] Preferably, the guide strip-shaped member is composed of a herringbone guide strip and two axial shaping strips connected to the two sides of the herringbone guide strip, and the spacing between the two sides of the two axial shaping strips is consistent with the width of the spring tube notch.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention realizes the transportation of the spring tube through a lateral pushing column and positions it during the transportation process. The spring tube is clamped and limited by the action of the inclined clamping plate to ensure the accuracy of the position of the spring tube. The rotation angle of the spring tube is limited by blocking the end block and the injection joint thereon to ensure that it can be in close contact with the base to be welded, thereby significantly improving the welding quality.

[0019] 2. The present invention realizes automatic loading of the spring tube according to the special welding position and structure design of the spring tube, and cooperates with the existing multi-degree-of-freedom laser welding robot to realize automatic welding of the spring tube. Compared with the traditional welding method, it significantly improves the processing efficiency while ensuring the quality.

[0020] 3. The present invention blocks the base of the connection to be welded, seals the movable end of the spring tube by injecting a joint, and injects an inert gas inside, so that the welding point of the fixed end of the spring tube overflows with inert gas. The inert gas can prevent the metal from oxidation during the laser welding process and can realize the detection of the sealing of the welding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of a welding machine for instrument manufacturing proposed by the present invention;

[0022] Figure 2 This is a structural schematic diagram of a manufacturing station plate and a positioning adjustment member in a welding machine for instrument manufacturing proposed by the present invention;

[0023] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 4 This is a schematic diagram of the structural assembly of a positioning member and a rotation blocking member in a welding machine for instrument manufacturing proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the assembly structure of a transverse push column in a welding machine for instrument manufacturing proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the connection relationship structure of a transverse conveying device in a welding machine for instrument manufacturing proposed by the present invention;

[0027] Figure 7 This is a schematic structural diagram of a guide strip in a welding machine for instrument manufacturing proposed by the present invention;

[0028] Figure 8This is a schematic diagram of the installation relationship structure of a positioning adjustment member in a welding machine for instrument manufacturing proposed by the present invention;

[0029] Fig. 9 The present invention is a schematic end view of a positioning and adjusting member in a welding machine for manufacturing instruments and apparatuses.

[0030] In the figure: 1. welding base; 2. multi-degree-of-freedom laser welding robot; 3. manufacturing station plate; 4. supporting semi-axis; 5. lateral pushing column; 6. electric push rod; 7. injection joint; 8. feeding seat; 9. adapter fixing groove; 10. inner supporting arc seat; 11. blocking ring; 12. outer arc blocking piece; 13. feeding groove; 14. herringbone guide strip; 15. axial shaping strip; 16. electric slide rail; 17. electric slider; 18. pushing notch; 19. pushing slide rod; 20. conveying push ring; 21. fixed arc plate; 22. resisting telescopic column; 23. inclined card-in plate; 24. end plate; 25. blocking end block; 26. sealing rubber pad. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Example, see Figures 1 to 9A welding machine for instrument manufacturing includes a welding base 1 on which a multi-degree-of-freedom laser welding robot 2 is installed, wherein the multi-degree-of-freedom laser welding robot 2 can be adjusted at multiple angles on the welding base 1, which is a prior art and will not be described in detail herein. A manufacturing station plate 3 is provided on one side of the welding base 1, a supporting semi-axle body 4 is fixedly provided on the manufacturing station plate 3, and a positioning adjustment member for positioning and clamping a spring tube is provided on the supporting semi-axle body 4;

[0035] The positioning adjustment member comprises an inner arc seat 10 fixedly arranged on the supporting semi-axle body 4, a blocking ring 11 is arranged at the end of the inner arc seat 10, and an outer arc blocking member 12 for blocking the spring tube from deforming is fixedly connected to the side wall of the blocking ring 11.

[0036] It should be noted that the outer diameter of the inner support arc seat 10 is adapted to the inner diameter of the spring tube. During the welding process of the spring tube, the inner support arc seat 10 limits the change of the inner diameter of the spring tube.

[0037] The setting of the blocking ring 11 can block the movement of the spring tube, so as to achieve the positioning effect of the spring tube in the horizontal direction, and ensure the positioning accuracy when the spring tube is welded and connected to the base to be welded;

[0038] The setting of the outer arc retaining member 12, the inner wall of the outer arc retaining member 12 is adapted to the inner diameter of the outer wall of the spring tube, which can limit the spring tube while ensuring that the spring tube will not be deformed before welding and extrusion butt joint, ensuring that the welding contact surface is fully vertical, thereby ensuring the welding quality.

[0039] The end of the supporting semi-axle body 4 is fixedly connected with a transverse push column 5 for conveying the spring tube; further, a feeding groove 13 for feeding the spring tube is provided on the transverse push column 5;

[0040] It is worth noting that the size of the notch of the spring tube is smaller than the diameter of the spring tube, which makes it impossible for the lateral push column 5 adapted to the spring tube to directly put the spring tube on, so the feeding groove 13 is provided to facilitate the feeding of the spring tube;

[0041] A guide strip is provided at the bottom of the transverse push column 5 to guide the spring tube to adjust the angle. The guide strip consists of a herringbone guide strip 14 and two axial shaping strips 15 connected to the two sides of the herringbone guide strip 14. The spacing between the two axial shaping strips 15 is consistent with the width of the spring tube gap.

[0042] It should be noted that when the spring tube is fed from the feed groove 13, the notch of the spring tube is at the bottom. In this solution, a guiding strip is arranged at the bottom of the transverse pushing column 5. In the process of the electric control pushing member pushing the spring tube forward, the notch of the spring tube will be gradually guided under the blocking limit of the herringbone guide strip 14, so that the spring tube rotates and changes its angle. When the spring tube moves to the axial forming strip 15, its two ends just contact and slide with the axial forming strips 15 on both sides for continuous conveying, thereby ensuring that the spring tube can automatically adjust its angle during the conveying process, which is convenient for subsequent welding positioning processing.

[0043] An electrically controlled pusher is provided inside the transverse push column 5 for pushing the spring tube forward for transportation. The electrically controlled pusher includes a mounting groove provided in the transverse push column 5, an electric slide rail 16 is provided in the mounting groove, an electric slider 17 is provided on the electric slide rail 16, a pushing groove 18 penetrating the side wall is provided above the mounting groove, a pushing slide rod 19 located in the pushing groove 18 is fixedly connected to the electric slider 17, and a conveying push ring 20 is connected to the end of the pushing slide rod 19 through an elastic connecting piece.

[0044] The cooperation between the electric slide rail 16 and the electric slider 17 is a prior art and will not be described in detail here. It provides a driving force for the spring tube mounted on the transverse push column 5 to achieve the effect of automatic feeding.

[0045] Furthermore, the elastic connecting member includes a fixed arc plate 21 connected to the pushing slide rod 19, and the fixed arc plate 21 is connected to the conveying push ring 20 through a plurality of abutting telescopic columns 22. The conveying push ring 20 is sleeved on the transverse pushing column 5, and applies pressure to the spring tube sleeved on the transverse pushing column 5, thereby realizing the conveyance of the spring tube.

[0046] The connection method using the elastic connector can make the pusher have the effect of moving backward, so that when the inserted positioning member moves downward, the second spring tube and the spring tube behind it can move backward relative to each other, ensuring that there is a spacing between the first welded spring tube and the spring tube behind it, so as to meet the space requirement during the welding process;

[0047] The manufacturing workstation plate 3 is respectively connected with a snap-in positioning member and a rotation blocking member through two electric push rods 6. Furthermore, the snap-in positioning member includes an arc-shaped inclined snap-in plate 23, and the end of the inclined snap-in plate 23 is fixedly connected to an end plate 24. The output end of the electric push rod 6 located above is fixedly connected to the end plate 24.

[0048] It should be noted that the setting of the snap-in positioning piece can separate the spring tube to be welded from the spring tube behind it to provide a welding passing distance, and when the inclined snap-in plate 23 is snapped into place at the bottom, one end of the spring tube can be fixed, so that the spring tube to be welded is effectively positioned under the action of the inner support arc seat 10, the blocking ring 11, the outer arc blocking piece 12 and the inclined snap-in plate 23, so that it cannot move.

[0049] The rotating blocking member is provided with an injection joint 7 for injecting inert gas into the spring tube. Further, the rotating blocking member includes a blocking end block 25. The injection joint 7 is adapted to the end of the spring tube and is fixedly arranged on the blocking end block 25. The injection joint 7 is externally connected to an inert gas pump through an air pipe.

[0050] It is worth noting that, in this solution, the other end of the spring tube is positioned during the welding process by setting the injection joint 7, and the rotation of the spring tube can be limited by the blocking end block 25 to ensure close contact between it and the base to be welded;

[0051] Injecting inert gas through the injection joint 7 can make the gas overflow from the welding point of the spring tube. While achieving the effect of welding anti-oxidation, it can also determine the sealing of the welding port through the change of gas pressure after welding and realize the detection of welding quality.

[0052] The output end of the electric push rod 6 located below is connected to the blocking end block 25 through a connecting block.

[0053] The welding base 1 is provided with a feeding seat 8 connected by a transverse conveying device. The transverse conveying device is a prior art and will not be described in detail here. The feeding seat 8 is provided with an adapting fixing groove 9 for fixing the base to be welded. A sealing rubber pad 26 is provided on one side of the adapting fixing groove 9 for blocking the air port of the base to be welded.

[0054] The feeding seat 8 is used to convey the base to be welded. When automated welding is required, the base to be welded can be conveyed to the adapter fixing groove 9 through an automatic feeding device.

[0055] When welding the spring tube, the present invention places the connection base to be welded with the spring tube on the adapting fixing groove 9, transports it horizontally through the transverse transport device, and docks it with the spring tube after transportation and positioning. After accurate docking, the multi-degree-of-freedom laser welding robot 2 arranged on the welding base 1 performs automatic welding.

[0056] Specifically, the following steps are included: a plurality of groups of spring tubes are sleeved one by one on the transverse push column 5 at the feeding groove 13 to realize loading; under the action of the electric slide rail 16 and the electric slider 17, the conveying push ring 20 connected to the push slide rod 19 on the electric slider 17 will realize pushing the spring tube; the spring tube moving on the transverse push column 5 will be rotated and adjusted by the guide bar during the conveying process to realize the positioning adjustment of the spring tube, and ensure that the positions (notch angles) of the plurality of spring tubes conveyed to the inner support arc seat 10 are consistent;

[0057] At this time, the electric push rod 6 located at the top is controlled to work, driving the inclined surface card-in plate 23 connected thereto to move downward, so as to separate the spring tube to be welded from the spring tube behind by a certain distance, and in this process, the spring tube to be welded is moved into the space formed by the inner support arc seat 10, the blocking ring 11, the outer arc blocking member 12 and the inclined surface card-in plate 23, so as to realize automatic positioning of lateral and vertical movement;

[0058] Then the electric push rod 6 located below is controlled to work, driving the blocking end block 25 to move upward, so as to position the other end of the spring tube during the welding process. The blocking end block 25 can limit the rotation of the spring tube, ensuring that the spring tube is in close contact with the base to be welded, thereby ensuring the welding quality;

[0059] It realizes the effect of automatic feeding and automatic welding of spring tubes. Compared with the traditional welding method, it significantly improves the processing efficiency while ensuring the quality.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding machine for instrument manufacturing, comprising a welding base (1) on which a multi-degree-of-freedom laser welding robot (2) is mounted, characterized in that: A manufacturing station plate (3) is arranged on one side of the welding base (1), a supporting semi-axle body (4) is fixedly arranged on the manufacturing station plate (3), a positioning adjustment member for positioning and clamping the spring tube is arranged on the supporting semi-axle body (4), a transverse driving column (5) for conveying the spring tube is fixedly connected to the end of the supporting semi-axle body (4), and an electric control driving member is arranged inside the transverse driving column (5) for driving the spring tube forward for conveying; The manufacturing station plate (3) is respectively connected to a snap-in positioning member and a rotation blocking member via two electric push rods (6); the rotation blocking member is provided with an injection joint (7) for injecting inert gas into the spring tube; the welding base (1) is provided with a feeding seat (8) connected via a transverse conveying device; the feeding seat (8) is provided with an adapting fixing groove (9) for fixing the base to be welded; The positioning adjustment member comprises an inner support arc seat (10) fixedly arranged on the supporting semi-axle body (4), a blocking ring (11) being arranged at the end of the inner support arc seat (10), and an outer arc blocking member (12) for blocking the spring tube from deforming being fixedly connected to the side wall of the blocking ring (11); The transverse push column (5) is provided with a feeding groove (13) for feeding the spring tube, and the bottom of the transverse push column (5) is provided with a guiding strip for guiding the spring tube to adjust the angle; The snap-in positioning member comprises an arc-shaped inclined snap-in plate (23), the end of the inclined snap-in plate (23) being fixedly connected to an end plate (24), and the output end of the electric push rod (6) located above is fixedly connected to the end plate (24); The rotation blocking member comprises a blocking end block (25), the injection butt joint (7) is adapted to the end of the spring tube and is fixedly arranged on the blocking end block (25), and the injection butt joint (7) is externally connected to an inert gas pump via an air pipe; The output end of the electric push rod (6) located at the bottom is connected to the blocking end block (25) via a connecting block; The guide strip-shaped member is composed of a herringbone guide strip (14) and two axial shaping strips (15) connected to the two sides of the herringbone guide strip (14), and the spacing between the two sides of the two axial shaping strips (15) is consistent with the width of the spring tube notch.

2. A welding machine for instrument manufacturing according to claim 1, characterized in that: The electrically controlled push member comprises a mounting groove provided in a transverse push column (5), an electric slide rail (16) being provided in the mounting groove, an electric slider (17) being provided on the electric slide rail (16), a push slot (18) penetrating through a side wall being provided above the mounting groove, a push slide rod (19) located in the push slot (18) being fixedly connected to the electric slider (17), and an end of the push slide rod (19) being connected to a conveying push ring (20) via an elastic connecting member.

3. A welding machine for instrument manufacturing according to claim 2, characterized in that: The elastic connecting member comprises a fixed arc plate (21) connected to the push slide rod (19); the fixed arc plate (21) is connected to a conveying push ring (20) via a plurality of abutting telescopic columns (22); the conveying push ring (20) is sleeved on the transverse push column (5) and applies pressure to the spring tube sleeved on the transverse push column (5) to realize the conveying of the spring tube.

4. A welding machine for instrument manufacturing according to claim 1, characterized in that: A sealing rubber pad (26) is provided on one side of the adapter fixing groove (9) for blocking the air port of the base to be welded.

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