Novel resistance welding machine

Abstract

The utility model discloses a novel resistance welding machine which comprises a main body, a movable module is arranged on the upper portion of the main body, a supporting seat is arranged on the lower portion of the main body, a lower conductive copper block is arranged on the supporting seat, a product positioning tool is arranged on the lower conductive copper block, and an upper conductive copper block is arranged on the movable module. A tungsten rod is vertically arranged on the upper conductive copper block, a tungsten sheet is transversely arranged on the lower conductive copper block, a stator is placed on the product positioning tool, a PIN of the stator is placed between the tungsten rod and the tungsten sheet, and the tungsten rod moves downwards to be in contact with the tungsten sheet for electric conduction and is used for heating and welding the PIN of the stator. The welding machine can be compatible with welding of various products and can also collect and upload data at the same time.

Description

Technical Field

[0001] The utility model relates to a welding machine, in particular to a novel resistance welding machine, belonging to the technical field of motor stator processing. Background Art

[0002] At present, in the welding process of automobile motors and household appliance motors, the motor product models are different. Therefore, during the welding process of the motor PIN pins, the welding machine is required to be compatible with the welding of multiple products and at the same time, be able to upload the data during the welding process. Utility Model Content

[0003] The purpose of the utility model is to provide a new type of resistance welding machine, which is compatible with the welding of multiple products and can also collect and upload data.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is that a new type of resistance welding machine includes a main body, a movable module is arranged on the upper part of the main body, a support seat is arranged on the lower part, a lower conductive copper block is arranged on the support seat, a product positioning tool is arranged on the lower conductive copper block, an upper conductive copper block is arranged on the movable module, a tungsten rod is vertically arranged on the upper conductive copper block, a tungsten sheet is horizontally arranged on the lower conductive copper block, the product positioning tool is used to place a stator, the PIN pin of the stator is placed between the tungsten rod and the tungsten sheet, the tungsten rod moves downward to contact the tungsten sheet for conduction, and is used to heat and weld the PIN pin of the stator.

[0005] Preferably, the moving module includes a servo motor, which is fixed to the upper part of the main body through a mounting plate, and a first linear slide is also provided on the mounting plate, and a first slider is provided on the first linear slide. The servo motor is provided with a pressure feedback module through a ball screw, and the pressure feedback module is fixed on the first slider. Driven by the servo motor, the pressure feedback module moves up and down on the first linear slide.

[0006] Preferably, the pressure feedback module comprises a pressure sensor, the bottom of the pressure sensor is connected to an L-shaped mounting seat via a set of flexible transmission mechanisms, and an upper conductive copper block is arranged at the bottom of the L-shaped mounting seat.

[0007] Preferably, the L-shaped mounting seat is provided with a mechanism reinforcement rib.

[0008] Preferably, the L-shaped mounting seat is arranged on the lower pressing plate through a buffer module, and the lower pressing plate is fixed on the first sliding block.

[0009] Preferably, the buffer module comprises a second linear slide rail and a second slider, the second linear slide rail is fixed on the lower pressure plate, and the L-shaped mounting seat is fixed on the second slider.

[0010] Preferably, the product positioning tool is symmetrically provided with arc-shaped grooves, and the tungsten sheet is placed in the arc-shaped grooves.

[0011] Preferably, a cooling air blow pipe is symmetrically arranged on the L-shaped mounting seat, one end of the cooling air blow pipe is fixed on the L-shaped mounting seat, and the other end is located on both sides of the product positioning tooling for cooling during PIN foot welding.

[0012] Preferably, the upper conductive copper block is a convex structure, a circular profiling groove with one side open is arranged on its protruding portion, the tungsten rod is installed in the circular profiling groove, and a first cooling water groove is arranged on the protruding portion, which is connected to external cooling water for cooling the tungsten rod.

[0013] Preferably, a second cooling water tank is provided on the product positioning tooling, and an external cooling water connection is used to cool the tungsten sheet.

[0014] Beneficial effects of the utility model: This patent is applied to the welding of automobile air-conditioning motors. The servo motor provides power, the ball screw and the linear guide provide the guiding direction, and the welding mechanism is driven to press down to weld the stator PIN copper sheets together. This patent is compatible with the welding of multiple products, and at the same time has pressure feedback. It can detect whether the pressure value during stator welding is overloaded according to the force on the stator, and determine whether the current welding is normal. The data feeds back the current pressure value and resistance value of each stator in real time. The welding head part is equipped with a cooling system and air blowing, and the welding rod is quickly cooled by water cooling and air cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present utility model, the drawings required to be used in the embodiments or the description of the prior art will be briefly introduced below.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model (without the product);

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A part;

[0018] Figure 3 It is a structural schematic diagram of the utility model (with product);

[0019] Figure 4 for Figure 3 A partial enlarged view of the middle B part;

[0020] Figure 5 This is a schematic diagram of the structure of the mobile module of the utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the mobile module of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the positioning tooling for the product of the utility model;

[0023] Figure 8 It is a schematic diagram of the partial structure of the conductive copper block of the utility model;

[0024] Fig. 9 This is a schematic diagram of the contact between the upper and lower conductive copper blocks of the utility model. DETAILED DESCRIPTION

[0025] In order to enable persons skilled in the art to better understand the technical solutions in the present application, the technical solutions in the present application will be clearly and completely described below in conjunction with embodiments.

[0026] like Figure 1-Figure 4 As shown, the utility model discloses a novel resistance welding machine, including a main body 1, a moving module 2 is arranged on the upper part of the main body 1, a supporting seat 3 is arranged on the lower part, a lower conductive copper block 4 is arranged on the supporting seat 3, a product positioning tool 5 is arranged on the lower conductive copper block 4, an upper conductive copper block 6 is arranged on the moving module 2, a tungsten rod 7 is vertically arranged on the upper conductive copper block 6, a tungsten sheet 8 is horizontally arranged on the lower conductive copper block 4, a stator 9 is placed on the product positioning tool 5, a PIN foot 10 of the stator 9 is placed between the tungsten rod 7 and the tungsten sheet 8, the tungsten rod 7 moves downward to contact the tungsten sheet 8 for conduction, and is used to heat and weld the PIN foot 10 of the stator 9.

[0027] like Figure 4 As shown, a copper wire is wound in the middle of the stator of the automobile air-conditioning motor. In order to prevent the copper wire from falling off, a copper wire (not shown in the figure) is wound between the PIN pin 10 and the PIN pin copper sheet 10a, and then the PIN pin copper sheet 10a and the PIN pin 10 are welded together, so that the copper wire can be fully guaranteed not to fall off.

[0028] During the welding process, positive and negative currents are respectively passed through the upper conductive copper block 6 and the lower conductive copper block 4. When the tungsten rod 7 and the tungsten sheet 8 are in contact, heat is generated to weld the PIN pin copper sheet 10a and the PIN pin 10 together.

[0029] like Figure 5-Figure 6 As shown, the movable module 2 includes a servo motor 201, and the servo motor 201 is fixed to the upper part of the main body 1 through a mounting plate 202. A first linear guide rail 203 is also provided on the mounting plate 202, and a first slider 204 is provided on the first linear guide rail 203. The servo motor 201 is provided with a pressure feedback module 11 through a ball screw 205. The pressure feedback module 11 is fixed on the first slider 204. Under the drive of the servo motor 201, the pressure feedback module 11 moves up and down on the first linear guide rail 201.

[0030] The pressure feedback module 11 includes a pressure sensor 1101, the bottom of which is connected to an L-shaped mounting seat 1103 via a set of flexible transmission mechanisms 1102, and an upper conductive copper block 6 is disposed at the bottom of the L-shaped mounting seat 1103. In this patent, the flexible transmission mechanism 1102 is a set of flexible springs.

[0031] One of the innovations of this patent is that it is equipped with a pressure feedback module 11, which can detect whether the pressure value of the stator is overloaded during welding according to the force on the stator, determine whether the current welding is normal, and provide real-time data feedback on the current pressure value and resistance value of each stator. This patent only protects the structure of the welding machine, and does not require protection for the electrical control, so it is not described in detail.

[0032] The L-shaped mounting seat 1103 is provided with a mechanism reinforcement rib 1104. The L-shaped mounting seat 1103 is arranged on a lower pressing plate 1106 through a buffer module 1105, and the lower pressing plate 1106 is fixed on the first sliding block 204.

[0033] The buffer module 1105 includes a second linear slide rail 1105a and a second slider 1105b, wherein the second linear slide rail 1105a is fixed on the lower pressing plate 1106, and the L-shaped mounting seat 1103 is fixed on the second slider 1105b. The arrangement of the buffer module 1105 improves the controllability of the downward pressing force of the moving module 2.

[0034] The L-shaped mounting seat 1103 is also symmetrically provided with a cooling air blowing pipe 12, one end of which is fixed on the L-shaped mounting seat 1103, and the other end is located on both sides of the product positioning tooling 5, for cooling during PIN pin welding to prevent excessive heat from damaging the stator assembly.

[0035] like Figure 7 As shown, the product positioning tool 5 is symmetrically provided with arc grooves 501, and the tungsten sheet 8 is placed in the arc grooves 501, which facilitates the positioning of the tungsten sheet 8 and the positioning of the stator 9. The product positioning tool 5 is provided with a second cooling water tank 502, and the external cooling water is connected to cool the tungsten sheet 8. Because the tungsten sheet 8 is in contact with the tungsten rod 7, the positive and negative currents will generate high heat, so the tungsten sheet needs to be cooled after welding.

[0036] like Figure 8 The upper conductive copper block 6 is a convex structure, and a circular profiling groove 602 with one side open is arranged on its protruding portion 601. The tungsten rod 7 is installed in the circular profiling groove 602, and a first cooling water groove 603 is arranged on the protruding portion 601, which is connected to external cooling water for cooling the tungsten rod 7.

[0037] In this patent, the welding head part is equipped with a cooling system and air blowing, which can quickly cool the welding rod through water cooling and air cooling.

[0038] like Fig. 9 As shown, after the stator 10 is installed on the product positioning tooling 5, that is, the PIN foot 10 of the stator 9 is placed on the tungsten sheet 8, the moving module 2 drives the tungsten rod 7 to move downward. At this time, the upper conductive copper block 6 and the lower conductive copper block 4 are both energized. When the tungsten rod 7 and the tungsten sheet 8 are in contact, huge heat is generated, and the PIN foot 10 and the PIN foot copper sheet 10a are quickly welded together.

[0039] The described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of 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.

Claims

1. A new type of resistance welding machine, characterized in that: The invention comprises a main body (1), wherein a movable module (2) is arranged on the upper part of the main body (1), and a support seat (3) is arranged on the lower part of the main body (1); a lower conductive copper block (4) is arranged on the support seat (3); a product positioning tool (5) is arranged on the lower conductive copper block (4); an upper conductive copper block (6) is arranged on the movable module (2); a tungsten rod (7) is arranged vertically on the upper conductive copper block (6); a tungsten sheet (8) is arranged horizontally on the lower conductive copper block (4); a stator (9) is placed on the product positioning tool (5); a PIN foot (10) of the stator (9) is placed between the tungsten rod (7) and the tungsten sheet (8); the tungsten rod (7) moves downward to contact the tungsten sheet (8) for electrical conduction, and is used to heat and weld the PIN foot (10) of the stator (9).

2. The new resistance welding machine according to claim 1 is characterized in that: The moving module (2) comprises a servo motor (201), the servo motor (201) is fixed to the upper part of the main body (1) via a mounting plate (202), a first linear slide rail (203) is also provided on the mounting plate (202), a first slider (204) is provided on the first linear slide rail (203), the servo motor (201) is provided with a pressure feedback module (11) via a ball screw (205), the pressure feedback module (11) is fixed on the first slider (204), and the pressure feedback module (11) moves up and down on the first linear slide rail (203) under the drive of the servo motor (201).

3. The new resistance welding machine according to claim 2 is characterized in that: The pressure feedback module (11) comprises a pressure sensor (1101), the bottom of the pressure sensor (1101) is connected to an L-shaped mounting seat (1103) via a set of flexible transmission mechanisms (1102), and an upper conductive copper block (6) is arranged at the bottom of the L-shaped mounting seat (1103).

4. The new resistance welding machine according to claim 3 is characterized in that: The L-shaped mounting seat (1103) is provided with a mechanism reinforcement rib (1104).

5. The new resistance welding machine according to claim 3 is characterized in that: The L-shaped mounting seat (1103) is arranged on a lower pressing plate (1106) via a buffer module (1105), and the lower pressing plate (1106) is fixed on the first sliding block (204).

6. The new resistance welding machine according to claim 5 is characterized in that: The buffer module (1105) comprises a second linear slide rail (1105a) and a second slider (1105b); the second linear slide rail (1105a) is fixed on the lower pressing plate (1106); and the L-shaped mounting seat (1103) is fixed on the second slider (1105b).

7. The new resistance welding machine according to claim 1 is characterized in that: The product positioning tool (5) is symmetrically provided with arc-shaped grooves (501), and the tungsten sheet (8) is placed in the arc-shaped grooves (501).

8. The new resistance welding machine according to claim 3 is characterized in that: The L-shaped mounting seat (1103) is also symmetrically provided with a cooling air blow pipe (12), one end of the cooling air blow pipe (12) is fixed to the L-shaped mounting seat (1103), and the other end is located on both sides of the product positioning tooling (5), and is used for cooling during PIN pin welding.

9. The new resistance welding machine according to claim 1 is characterized in that: The upper conductive copper block (6) is a convex structure, and a circular profiling groove (602) with an opening on one side is provided on the protruding portion (601). The tungsten rod (7) is installed in the circular profiling groove (602), and a first cooling water groove (603) is provided on the protruding portion (601) and is connected to external cooling water for cooling the tungsten rod (7).

10. The new resistance welding machine according to claim 1 or 9, characterized in that: The product positioning tooling (5) is provided with a second cooling water tank (502), and an external cooling water connection is used to cool the tungsten sheet (8).

Images