Automatic positioning and welding device for flat wire stator

Abstract

The utility model discloses an automatic positioning and welding device for a flat wire stator, which comprises a welding gun used for welding a welding spot; the clamping assembly is used for clamping and fixing a to-be-welded stator lead, the welding gun is fixedly connected to the clamping assembly, and a welding nozzle of the welding gun is aligned with the to-be-welded stator lead; one side of the positioning assembly is connected with the clamping assembly, and the other side of the positioning assembly is connected with a connecting plate of the motion module; when the positioning assembly is in the first state, the connecting plate and the clamping assembly are rigidly fixed; when the positioning assembly is in the second state, the connecting plate can horizontally move relative to the clamping assembly; the welding gun can be accurately guided to each welding spot, so that the consistency of welding positions is ensured; and the lead is clamped and fixed under the condition that the position of the stator lead is not forcibly changed, and the original position and height of the lead are kept, so that the welding accuracy and quality are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of welding production equipment, in particular to an automatic positioning welding device for a flat wire stator. Background Art

[0002] In the traditional manual welding process, the work of positioning and clamping the stator lead is usually done by the operator, which is not only inefficient, but also the welding quality is limited by the operator's skill level and fatigue. In order to overcome these limitations, automated welding equipment is introduced into the production line, which uses sophisticated mechanical systems and control systems to achieve automatic positioning of the welding gun and automatic clamping of the lead. In automated welding equipment, accurate positioning of the welding gun is the key to ensure welding quality.

[0003] The current welding solution has many technical defects:

[0004] (1) During welding, the copper wire to be welded on the stator is positioned and locked by a fixture before welding. There are many welding points and the positioning tooling is complicated. The position difference of the copper wire before welding is large and the position consistency cannot be guaranteed, so the welding quality cannot be guaranteed;

[0005] (2) In order to save space, major manufacturers require the stator to have a short terminal, which limits the total length of the stator and reduces the welding space. The fixture clamping and positioning will temporarily occupy a large space and the fixture design is complicated.

[0006] (3) The stator leads are irregularly shaped, and the position of each solder joint will deviate to some extent. When using tools to clamp and position, it is easy to force the solder joint to a fixed position, resulting in a height difference of the lead and poor welding quality. Summary of the invention

[0007] The purpose of the utility model is to provide a flat wire stator automatic positioning welding device to solve the problems existing in the prior art. The welding gun can be accurately guided to each welding point to ensure the consistency of the welding position; the lead wire is clamped and fixed without forcibly changing the position of the stator lead wire, maintaining the original position and height of the lead wire, thereby ensuring the accuracy and quality of welding.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A flat wire stator automatic positioning welding device comprises: a welding gun for spot welding; a clamping assembly for clamping and fixing the stator lead to be welded, the welding gun is fixedly connected to the clamping assembly so that the welding nozzle of the welding gun is aligned with the stator lead to be welded; a positioning assembly, one side of which is connected to the clamping assembly and the other side is connected to a connecting plate of a motion module; when the positioning assembly is in a first state, the connecting plate is rigidly fixed to the clamping assembly; when the positioning assembly is in a second state, the connecting plate can be horizontally displaced relative to the clamping assembly.

[0010] Furthermore, the clamping assembly includes: a mounting bracket connected to the positioning assembly; a first clamping cylinder fixed to the mounting bracket, and a movable portion thereof extending to the welding nozzle of the welding gun; and a second clamping cylinder fixed to the mounting bracket, cooperating with the first clamping cylinder to clamp and fix the stator lead.

[0011] Furthermore, the clamping part of the first clamping cylinder is provided with a groove, and the clamping part of the second clamping cylinder is provided with a protrusion that cooperates with and is inserted into the groove; the clamping part of the first clamping cylinder is first extended to receive the stator lead into its groove, and the clamping part of the second clamping cylinder is then extended to clamp and fix the stator lead through the cooperation of its protrusion and the groove.

[0012] Furthermore, the positioning assembly includes: an X-axis slide plate, which is slidably connected to the clamping assembly along the X-axis; an X-axis positioning device, which is fixed to the clamping assembly and fixes the X-axis slide plate to the clamping assembly when the positioning assembly is in a first state; a Y-axis slide plate, which is slidably connected to the X-axis slide plate along the Y-axis and fixed to a connecting plate of the motion module; and a Y-axis positioning device, which is fixed to the X-axis slide plate and fixes the Y-axis slide plate to the X-axis slide plate when the positioning assembly is in the first state.

[0013] Furthermore, the X-direction positioning device includes a first X-direction cylinder and a second X-direction cylinder, the movable part of the first X-direction cylinder first extends to a predetermined position, and the movable part of the second X-direction cylinder extends later to clamp the X-direction slide plate in position; the Y-direction positioning device includes a first Y-direction cylinder and a second Y-direction cylinder, the movable part of the first Y-direction cylinder first extends to a predetermined position, and the movable part of the second Y-direction cylinder extends later to clamp the Y-direction slide plate in position.

[0014] Furthermore, the welding gun is fixedly connected to the clamping assembly via a clamping block assembly; the clamping block assembly comprises a first clamping block and a second clamping block, the welding gun is arranged between the two, the first clamping block and the second clamping block clamp and fix the welding gun via screws, and the first clamping block and the clamping assembly are fixedly connected via screws.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] Through the coordinated work of the positioning component and the motion module, the welding gun can be accurately guided to each welding point to ensure the consistency of the welding position;

[0017] The positioning assembly switches between two states. When in the first state, the connecting plate is rigidly fixed to the clamping assembly, so that the motion module can accurately guide the welding gun to the predetermined welding point. This rigid fixation ensures that the welding gun can consistently reach the same welding point before each welding, thereby improving the consistency and repeatability of welding; when in the second state, the positioning assembly allows the connecting plate to be horizontally displaced relative to the clamping assembly. This design provides the necessary flexibility for the clamping assembly, enabling it to clamp and fix the stator lead without forcibly changing the position of the stator lead, which avoids the change of the lead position caused by the clamping action and maintains the original position and height of the lead, thereby ensuring the accuracy and quality of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structural diagram of the welding device of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the clamping assembly of this application;

[0020] Figure 3 A schematic diagram of the structure of the positioning component for this application;

[0021] In the figure: 1, welding gun; 2, mounting bracket; 3, first clamping cylinder; 301, groove; 4, second clamping cylinder; 401, bump; 5, X-direction slide; 6, Y-direction slide; 7, first X-direction cylinder; 8, second X-direction cylinder; 9, first Y-direction cylinder; 10, second Y-direction cylinder; 11, first clamping block; 12, second clamping block; 13, connecting plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection 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.

[0026] like Figures 1 to 3 As shown, an automatic positioning welding device for a flat wire stator comprises: a welding gun 1 for spot welding; a clamping assembly for clamping and fixing the stator lead to be welded, the welding gun 1 is fixedly connected to the clamping assembly, so that the welding nozzle of the welding gun 1 is aligned with the stator lead to be welded, ensuring the stability and accuracy of the welding gun during the welding process; a positioning assembly, one side of which is connected to the clamping assembly, and the other side is connected to the connecting plate 7 of the motion module; when the positioning assembly is in the first state, the connecting plate 7 is rigidly fixed to the clamping assembly; when the positioning assembly is in the second state, the connecting plate 7 can be horizontally displaced relative to the clamping assembly.

[0027] Specifically, the motion module is used to drive the overall displacement of the device; before welding, the motion module drives the welding gun 1 and the clamping assembly to the top of the stator lead to be welded; one side of the positioning assembly is connected to the motion module, and the other side is connected to the clamping assembly. The first action is performed by the positioning assembly to make the clamping assembly and the motion module rigidly connected, so that the motion module can accurately position the welding gun 1 to the welding point, ensuring that the position of the welding point is consistent before each welding; then, before welding, the positioning assembly performs a second action to allow the connecting plate 7 to be horizontally displaced relative to the clamping assembly. At this time, the clamping assembly clamps the stator lead and fixes it, and aligns the welding nozzle of the welding gun 1 with the stator lead to facilitate welding of the welding gun 1. Since the connecting plate 7 and the clamping assembly are in a relatively active state at this time, the clamping will not forcibly change the position of the stator lead.

[0028] Through the coordinated work of the positioning assembly and the motion module, the welding gun 1 can be accurately guided to each welding point to ensure the consistency of the welding position.

[0029] The positioning assembly switches between two states. When in the first state, the connecting plate 7 is rigidly fixed to the clamping assembly, so that the motion module can accurately guide the welding gun 1 to the predetermined welding point. This rigid fixation ensures that the welding gun can consistently reach the same welding point before each welding, thereby improving the consistency and repeatability of welding; when in the second state, the positioning assembly allows the connecting plate 7 to be horizontally displaced relative to the clamping assembly. This design provides the necessary flexibility for the clamping assembly, enabling it to clamp and fix the stator lead without forcibly changing the position of the stator lead, which avoids the change of the lead position caused by the clamping action, maintains the original position and height of the lead, and ensures the accuracy and quality of welding.

[0030] In some embodiments, the clamping assembly includes: a mounting bracket 2 connected to the positioning assembly; a first clamping cylinder 3 fixed to the mounting bracket 2, and its clamping portion extends to the welding nozzle of the welding gun; a second clamping cylinder 4 fixed to the mounting bracket 2, and cooperates with the first clamping cylinder 3 to clamp and fix the stator lead. The mounting bracket 2, as a part of the clamping assembly, plays a role in supporting and fixing other components; the first clamping cylinder 3 plays a role in positioning the clamping position, and is usually set to the maximum extension position, and the second clamping cylinder 4 plays a role in coordinated clamping.

[0031] In some embodiments, the clamping part of the first clamping cylinder 3 is provided with a groove 301, and the clamping part of the second clamping cylinder 4 is provided with a protrusion 401 that cooperates with the groove 301 and is inserted; the clamping part of the first clamping cylinder 3 first extends to put the stator lead into its groove 301, and the clamping part of the second clamping cylinder 4 extends again, and the stator lead is clamped and fixed by the cooperation of its protrusion 401 and the groove 301. The cooperation between the groove 301 and the protrusion 401 provides a reliable clamping mechanism to ensure the stability of the stator lead during the welding process.

[0032] In some embodiments, the positioning assembly includes: an X-axis slide plate 5, which is slidably connected to the clamping assembly along the X-axis; an X-axis positioning device, which is fixed to the clamping assembly and fixes the X-axis slide plate 5 to the clamping assembly when the positioning assembly is in the first state; a Y-axis slide plate 6, which is slidably connected to the X-axis slide plate 5 along the Y-direction and fixed to the connecting plate 13 of the motion module; a Y-axis positioning device, which is fixed to the X-axis slide plate 5 and fixes the Y-axis slide plate 6 to the X-axis slide plate 5 when the positioning assembly is in the first state.

[0033] The X-direction positioning device is used to lock the X-direction slide plate 5 with the clamping assembly to achieve accurate positioning of the welding gun 1 in the X direction; the Y-direction positioning device is used to lock the Y-direction slide plate 6 with the X-direction slide plate 5 to achieve accurate positioning of the welding gun 1 in the Y direction, which is equivalent to the positioning assembly being in the first state. Before clamping, the X-direction positioning device and the Y-direction positioning device simultaneously relax the control of the X-direction slide plate 5 and the Y-direction slide plate 6, so that the X-direction slide plate 5 and the Y-direction slide plate 6 can slide freely, which is equivalent to the positioning assembly being in the second state, achieving flexible horizontal displacement of the clamping assembly to adapt to different positions of each stator lead.

[0034] In some embodiments, the X-axis positioning device includes a first X-axis cylinder 7 and a second X-axis cylinder 8, the movable part of the first X-axis cylinder 7 is first extended to a predetermined position, and the movable part of the second X-axis cylinder 8 is then extended to clamp the X-axis slide 5 in position; the Y-axis positioning device includes a first Y-axis cylinder 9 and a second Y-axis cylinder 10, the movable part of the first Y-axis cylinder 9 is first extended to a predetermined position, and the movable part of the second Y-axis cylinder 10 is then extended to clamp the Y-axis slide 6 in position.

[0035] In some embodiments, the X-axis positioning device includes only one X-axis cylinder, and the maximum extension position of the X-axis cylinder is the X-axis positioning position of the X-axis slide 5; the Y-axis cylinder 9 includes only one Y-axis cylinder, and the maximum extension position of the Y-axis cylinder is the Y-axis positioning position of the Y-axis slide 9.

[0036] In some embodiments, the welding gun 1 is fixedly connected to the clamping assembly through a clamping block assembly; the clamping block assembly includes a first clamping block 11 and a second clamping block 12, the welding gun 1 is arranged between the first clamping block 11 and the second clamping block 12, the first clamping block 11 and the second clamping block 12 are locked by screws to hold the welding gun 1 tightly, and the first clamping block 11 and the clamping assembly are fixedly connected by screws. This design facilitates the rapid disassembly and installation of the welding gun 1.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flat wire stator automatic positioning welding device, characterized in that: include: A welding gun (1) for spot welding; A clamping assembly, used for clamping and fixing the stator lead to be welded, the welding gun (1) being fixedly connected to the clamping assembly; A positioning assembly, one side of which is connected to the clamping assembly, and the other side of which is connected to a connecting plate (13) of the motion module; When the positioning assembly is in a first state, the connecting plate (13) is rigidly fixed to the clamping assembly; when the positioning assembly is in a second state, the connecting plate (13) can be horizontally displaced relative to the clamping assembly.

2. The flat wire stator automatic positioning welding device according to claim 1, characterized in that: The clamping assembly comprises: A mounting bracket (2) connected to the positioning assembly; A first clamping cylinder (3) is fixed to the mounting bracket (2), and its movable portion can extend to the welding nozzle of the welding gun; The second clamping cylinder (4) is fixed to the mounting bracket (2) and cooperates with the first clamping cylinder (3) to clamp and fix the stator lead wire.

3. The flat wire stator automatic positioning welding device according to claim 2, characterized in that: The clamping part of the first clamping cylinder (3) is provided with a groove (301), and the clamping part of the second clamping cylinder (4) is provided with a protrusion (401) that cooperates with the groove (301) and is inserted; the clamping part of the first clamping cylinder (3) is first extended to receive the stator lead wire into its groove (301), and the clamping part of the second clamping cylinder (4) is then extended to clamp and fix the stator lead wire through the cooperation of its protrusion (401) and the groove (301).

4. The flat wire stator automatic positioning welding device according to claim 1, characterized in that: The positioning component comprises: An X-direction slide plate (5) is slidably connected to the clamping assembly along the X-direction; An X-axis positioning device is fixed to the clamping assembly, and when the positioning assembly is in a first state, the X-axis slide plate (5) is fixed to the clamping assembly; A Y-direction slide plate (6) is slidably connected to the X-direction slide plate (5) along the Y direction and is fixed to the connection plate (13) of the motion module; The Y-direction positioning device is fixed to the X-direction slide plate (5), and when the positioning assembly is in the first state, the Y-direction slide plate (6) is fixed to the X-direction slide plate (5).

5. The flat wire stator automatic positioning welding device according to claim 4, characterized in that: The X-direction positioning device comprises a first X-direction cylinder (7) and a second X-direction cylinder (8), wherein the movable portion of the first X-direction cylinder (7) is first extended to a predetermined position, and the movable portion of the second X-direction cylinder (8) is then extended to clamp the X-direction slide plate (5) for positioning; The Y-direction positioning device comprises a first Y-direction cylinder (9) and a second Y-direction cylinder (10), wherein the movable portion of the first Y-direction cylinder (9) is first extended to a predetermined position, and the movable portion of the second Y-direction cylinder (10) is then extended to clamp and position the Y-direction slide plate (6).

6. The flat wire stator automatic positioning welding device according to claim 1, characterized in that: The welding gun (1) is fixedly connected to the clamping assembly via a clamping block assembly; the clamping block assembly comprises a first clamping block (11) and a second clamping block (12), the welding gun (1) is arranged between the first clamping block (11) and the second clamping block (12) clamping and fixing the welding gun (1) via screws, and the first clamping block (11) and the clamping assembly are fixedly connected via screws.

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