Welding head pressure self-adjusting type spot welding machine

Abstract

The invention discloses a welding head pressure self-adjusting type spot welding machine, which relates to the technical field of spot welding machines, and comprises a fixed support, a welding head, a workbench, an X-axis movement mechanism, a Y-axis movement mechanism, a Y-axis movement mechanism, a Z-axis movement mechanism, a Z-axis movement mechanism, a Z-axis movement mechanism and an X-axis pressure self-adjusting mechanism, the connecting plate is connected with the X-axis movement mechanism; the Z-axis movement mechanism is connected with the connecting plate; the mounting bracket is connected with the Z-axis movement mechanism; the Y-axis movement mechanism is connected with the mounting bracket; one end of the pressure adjusting mechanism is connected with the Y-axis movement mechanism, and the other end is connected with the welding head. According to the position of a workpiece, the position of the welding head on the X axis is adjusted through the X-axis movement mechanism, the position of the welding head on the Z axis is adjusted through the Z-axis movement mechanism, the welding head is driven by the Y-axis movement mechanism to do longitudinal linear movement along the Y axis, the workpiece is welded through the welding head, and in the welding process, the pressure adjusting mechanism adjusts the pressure of the welding head according to the pressure of the welding head. And the Y-axis movement mechanism is controlled to move, and the welding pressure is adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of spot welding machines, in particular to a spot welding machine with self-adjusting welding head pressure. Background Art

[0002] The spot welder uses inductance to make the contacting object and the contacted object join to complete the welding function. It is actually an extremely high-power transformer that can instantly complete the conversion of electrical energy into thermal energy.

[0003] The existing direct welding equipment for enameled wires on the market currently uses a screw rod to directly adjust the height of the welding head. When encountering different processes during the welding process, the position of the welding head cannot be accurately positioned according to different requirements, and the pressure of the welding head cannot be adjusted, resulting in unqualified enameled wire welding. Therefore, a spot welding machine with self-adjusting welding head pressure is urgently needed to solve the above problems. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a spot welding machine with self-adjusting welding head pressure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A welding head pressure self-adjusting spot welding machine, comprising a fixed bracket, a welding head and a workbench, wherein one side of the fixed bracket is connected to the workbench, the welding head is located on the top of the workbench, and further comprising:

[0007] An X-axis motion mechanism is connected to the fixed bracket and is used to adjust the position of the welding head on the X-axis;

[0008] A connecting plate connected to the X-axis motion mechanism;

[0009] A Z-axis motion mechanism, connected to the connecting plate, is used to adjust the position of the welding head on the Z-axis;

[0010] A mounting bracket is connected to the Z-axis motion mechanism;

[0011] The Y-axis motion mechanism is connected to the mounting bracket and is used to drive the welding head to move linearly along the Y-axis;

[0012] The pressure regulating mechanism has one end connected to the Y-axis motion mechanism and the other end connected to the welding head, and is used to regulate the welding pressure of the welding head.

[0013] As a further solution of the present invention: the X-axis motion mechanism comprises:

[0014] A driving member 1, connected to the fixed bracket;

[0015] A transmission mechanism, one end of which is connected to an output end of the driving member;

[0016] The first threaded rod is connected to the other end of the transmission mechanism and is rotatably connected to the fixed bracket;

[0017] The threaded block 1 is threadedly connected to the threaded rod 1, and the top is connected to the bottom of the connecting plate;

[0018] The second slide rail is connected to the fixed bracket and is slidably connected to the bottom of the connecting plate. The second slide rail is horizontally arranged along the X-axis direction.

[0019] As a further solution of the present invention: the Z-axis motion mechanism comprises:

[0020] A second driving member connected to the connecting plate;

[0021] The second threaded rod is connected to the output end of the second driving member and is threadedly connected to the mounting bracket, and the second threaded rod is rotatably connected to the connecting plate;

[0022] The second limiting slider has a top connected to the bottom of the mounting bracket;

[0023] The slide rail three is connected to the top of the connecting plate and is slidably connected to the limiting slider two. The slide rail three is horizontally arranged along the Z-axis direction.

[0024] As a further solution of the present invention: the Y-axis motion mechanism comprises:

[0025] A driving member three is connected to the mounting bracket;

[0026] The threaded rod three is connected to the output end of the driving member three and is rotationally connected to the mounting bracket;

[0027] The limiting slider three is threadedly connected with the threaded rod three;

[0028] The slide rail four is connected to the mounting bracket and is slidably connected to the limit slider three. The slide rail four is vertically arranged along the Y-axis direction.

[0029] As a further solution of the present invention: the pressure regulating mechanism comprises:

[0030] The elastic member has a top end connected to the limit slider;

[0031] A limiting slider 1, connected to the bottom end of the elastic member;

[0032] A slide rail 1 is connected to the mounting bracket and is slidably connected to a limit slider 1, wherein the slide rail 1 is vertically arranged along the Y-axis direction;

[0033] A fixed seat is slidably connected with the limiting slider, the fixed seat is located at the bottom of the limiting slider and abuts against it, and the fixed seat is connected with the welding head;

[0034] A tension spring, the top end of which is connected to a limit slider, and the bottom end of which is connected to a fixed seat, and the tension spring is in a stretched state;

[0035] The pressure sensor is connected to the workbench.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] In the present invention, according to the position of the workpiece, the position of the welding head on the X-axis is adjusted by the X-axis motion mechanism, the position of the welding head on the Z-axis is adjusted by the Z-axis motion mechanism, and the Y-axis motion mechanism drives the welding head to move linearly along the Y-axis longitudinal direction, and the welding head welds the workpiece. During the welding process, the pressure regulating mechanism controls the movement of the Y-axis motion mechanism according to the pressure of the welding head to adjust the welding pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The figure is a schematic structural diagram of a spot welding machine with self-adjusting welding head pressure in an embodiment of the present invention.

[0039] Figure 2 Schematic diagram of the structure of the X-axis motion mechanism and the Z-axis motion mechanism in an embodiment of the present invention.

[0040] Figure 3 It is a schematic diagram of the structure of the Y-axis motion mechanism and the pressure adjustment mechanism in an embodiment of the present invention.

[0041] In the figure: 1. fixed bracket; 2. X-axis motion mechanism; 3. connecting plate; 4. Z-axis motion mechanism; 5. mounting bracket; 6. Y-axis motion mechanism; 7. elastic member; 8. limit slider 1; 9. slide rail 1; 10. fixed seat; 11. tension spring; 12. welding head; 13. workbench; 14. pressure sensor; 21. driving member 1; 22. transmission mechanism; 23. threaded rod 1; 24. threaded block 1; 25. slide rail 2; 41. driving member 2; 42. threaded rod 2; 43. limit slider 2; 44. slide rail 3; 61. driving member 3; 62. threaded rod 3; 63. limit slider 3; 64. slide rail 4. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In the embodiment of the present invention, please refer to Figures 1 to 3 A spot welding machine with self-adjusting welding head pressure includes a fixed bracket 1, a welding head 12 and a workbench 13, wherein one side of the fixed bracket 1 is connected to the workbench 13, and the welding head 12 is located on the top of the workbench 13, and further includes:

[0044] An X-axis motion mechanism 2, connected to the fixed bracket 1, for adjusting the position of the welding head 12 on the X-axis;

[0045] A connecting plate 3 connected to the X-axis motion mechanism 2;

[0046] A Z-axis motion mechanism 4, connected to the connecting plate 3, for adjusting the position of the welding head 12 on the Z-axis;

[0047] A mounting bracket 5 is connected to the Z-axis motion mechanism 4;

[0048] A Y-axis motion mechanism 6, connected to the mounting bracket 5, for driving the welding head 12 to move linearly along the Y-axis;

[0049] The pressure regulating mechanism has one end connected to the Y-axis motion mechanism 6 and the other end connected to the welding head 12 , and is used to regulate the welding pressure of the welding head 12 .

[0050] The workpiece is placed on the workbench 13. According to the position of the workpiece, the X-axis motion mechanism 2 adjusts the position of the welding head 12 on the X-axis. The Z-axis motion mechanism 4 adjusts the position of the welding head 12 on the Z-axis. The Y-axis motion mechanism 6 drives the welding head 12 to move linearly along the Y-axis. The welding head 12 welds the workpiece. During the welding process, the pressure regulating mechanism controls the movement of the Y-axis motion mechanism 6 according to the pressure of the welding head 12 to adjust the welding pressure.

[0051] As an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the X-axis motion mechanism 2 comprises:

[0052] A driving member 21 connected to the fixed bracket 1;

[0053] The transmission mechanism 22 has one end connected to the output end of the driving member 21;

[0054] The threaded rod 23 is connected to the other end of the transmission mechanism 22 and is rotatably connected to the fixed bracket 1;

[0055] A threaded block 24 is threadedly connected to a threaded rod 23, and the top is connected to the bottom of the connecting plate 3;

[0056] The second slide rail 25 is connected to the fixed bracket 1 and is slidably connected to the bottom of the connecting plate 3. The second slide rail 25 is horizontally arranged along the X-axis direction.

[0057] The driving member 21 drives the transmission mechanism 22 to rotate, the transmission mechanism 22 drives the threaded rod 23 to rotate, the slide rail 25 limits the connection plate 3, the threaded rod 23 drives the threaded block 24 to move linearly along the X-axis, and the threaded block 24 drives the connection plate 3 to move linearly along the slide rail 25. The driving member 21 can be a stepper motor, a servo motor, etc. The transmission mechanism 22 can be a belt transmission mechanism, a gear transmission mechanism, etc.

[0058] As an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the Z-axis motion mechanism 4 comprises:

[0059] A second driving member 41 connected to the connecting plate 3;

[0060] The second threaded rod 42 is connected to the output end of the second driving member 41 and is threadedly connected to the mounting bracket 5. The second threaded rod 42 is rotatably connected to the connecting plate 3;

[0061] The second limiting slider 43, the top of which is connected to the bottom of the mounting bracket 5;

[0062] The slide rail 3 44 is connected to the top of the connecting plate 3 and is slidably connected to the limiting slider 2 43 . The slide rail 3 44 is horizontally arranged along the Z-axis direction.

[0063] The second driving member 41 drives the second threaded rod 42 to rotate, the third slide rail 44 limits the second limit slider 43, the second threaded rod 42 drives the mounting bracket 5 to move linearly along the Z axis, and the mounting bracket 5 drives the second limit slider 43 to move linearly along the third slide rail 44. The second driving member 41 can be a stepper motor, a servo motor, etc.

[0064] As an embodiment of the present invention, please refer to Figure 1 and Figure 3 , the Y-axis motion mechanism 6 comprises:

[0065] A third driving member 61 is connected to the mounting bracket 5;

[0066] The threaded rod 3 62 is connected to the output end of the driving member 3 61 and is rotatably connected to the mounting bracket 5;

[0067] The limiting slider 3 63 is threadedly connected with the threaded rod 3 62;

[0068] The slide rail four 64 is connected to the mounting bracket 5 and is slidably connected to the limit slider three 63. The slide rail four 64 is vertically arranged along the Y-axis direction.

[0069] The driving member 3 61 drives the threaded rod 3 62 to rotate, the slide rail 4 64 limits the limit slider 3 63, and the threaded rod 3 62 drives the limit slider 3 63 to move linearly along the longitudinal direction of the slide rail 4 64. The driving member 3 61 can be a stepping motor, a servo motor, etc.

[0070] As an embodiment of the present invention, please refer to Figure 1 and Figure 3 , the pressure regulating mechanism comprises:

[0071] The elastic member 7, the top end of which is connected to the limiting slider 3 63;

[0072] A limit slider 8 is connected to the bottom end of the elastic member 7;

[0073] A slide rail 9 is connected to the mounting bracket 5 and is slidably connected to a limit slider 8, and the slide rail 9 is vertically arranged along the Y-axis direction;

[0074] A fixed seat 10 is slidably connected with the limit slider 8, the fixed seat 10 is located at the bottom of the limit slider 8 and abuts against it, and the fixed seat 10 is connected with the welding head 12;

[0075] A tension spring 11, the top end of which is connected to the limit slider 8, and the bottom end of which is connected to the fixing seat 10, wherein the tension spring 11 is in a stretched state;

[0076] The pressure sensor 14 is connected to the workbench 13 .

[0077] The fixed seat 10 is located at the bottom of the limit slider 8 and is slidably connected thereto. The tension spring 11 is in a stretched state, so that the fixed seat 10 abuts against the bottom of the limit slider 8. When welding, the limit slider 3 63 moves along the Y axis, driving the elastic member 7 and the limit slider 8 to move downward. The slide rail 9 ensures that the limit slider 8 moves stably. The limit slider 8 drives the fixed seat 10 to move downward, and the fixed seat 10 drives the welding head 12 to move downward for welding. The elastic member 7 buffers and adjusts the welding pressure of the welding head 12. When the welding head 12 descends and gives pressure to the pressure sensor 14, if When the pressure sensor 14 senses that the pressure is less than the actual required pressure, the limit slider 8 continues to move downward, squeezing the elastic member 7, causing the elastic member 7 to undergo elastic deformation, thereby increasing the pressure of the welding head 12; if the pressure sensor 14 senses that the pressure is greater than the actual required pressure, the limit slider 8 moves upward, reducing the elastic deformation of the elastic member 7, thereby reducing the pressure of the welding head 12, and the vibration generated during the welding process is buffered by the tension spring 11, avoiding the rigid direct connection between the fixed seat 10 and the limit slider 8, which cannot buffer the vibration generated during the welding process. The elastic member 7 can be a spring, a spring sheet, etc.

[0078] The working principle of the present invention is: the workpiece is placed on the workbench 13, and according to the position of the workpiece, the driving member 21 drives the transmission mechanism 22 to rotate, the transmission mechanism 22 drives the threaded rod 23 to rotate, the slide rail 25 limits the connecting plate 3, the threaded rod 23 drives the threaded block 24 to move linearly along the X-axis, the threaded block 24 drives the connecting plate 3 to move linearly along the slide rail 25, thereby adjusting the position of the welding head 12 on the X-axis, the driving member 2 41 drives the threaded rod 2 42 to rotate, the slide rail 3 44 limits the limiting slider 2 43, the threaded rod 2 42 drives the mounting bracket 5 to move linearly along the Z-axis, the mounting bracket 5 drives the limiting slider 2 43 to move linearly along the slide rail 3 44, thereby adjusting the position of the welding head 12 on the Z-axis, the driving member 3 61 drives the threaded rod 3 62 to rotate, the slide rail 4 64 limits the limiting slider 3 63, the threaded rod 3 62 drives the limiting slider 3 63 to move linearly along the longitudinal direction of the slide rail 4 64, and the limiting slider 3 63 moves along the Y-axis, driving the elastic member 7 and the limit slider 8 to move downward, the slide rail 9 ensures the stable movement of the limit slider 8, the limit slider 8 drives the fixed seat 10 to move downward, the fixed seat 10 drives the welding head 12 to move downward for welding, and the elastic member 7 buffers and adjusts the welding pressure of the welding head 12; when the welding head 12 descends to give pressure to the pressure sensor 14, if the pressure sensor 14 senses that the pressure is less than the actual required pressure, the limit slider 8 continues to move downward, squeezing the elastic member 7, causing the elastic member 7 to undergo elastic deformation, thereby increasing the pressure of the welding head 12; if the pressure sensor 14 senses that the pressure is greater than the actual required pressure, the limit slider 8 moves upward, reducing the elastic deformation of the elastic member 7, thereby reducing the pressure of the welding head 12, and the vibration generated during the welding process is buffered by the set tension spring 11, avoiding the fixed seat 10 and the limit slider 8 being rigidly directly connected, and failing to buffer the vibration generated during the welding process.

[0079] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0080] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A spot welding machine with self-adjusting welding head pressure, comprising a fixed bracket, a welding head and a workbench, wherein one side of the fixed bracket is connected to the workbench, and the welding head is located on the top of the workbench, characterized in that: Also includes: An X-axis motion mechanism is connected to the fixed bracket and is used to adjust the position of the welding head on the X-axis; A connecting plate connected to the X-axis motion mechanism; A Z-axis motion mechanism, connected to the connecting plate, is used to adjust the position of the welding head on the Z-axis; A mounting bracket is connected to the Z-axis motion mechanism; The Y-axis motion mechanism is connected to the mounting bracket and is used to drive the welding head to move linearly along the Y-axis; The pressure regulating mechanism has one end connected to the Y-axis motion mechanism and the other end connected to the welding head, and is used to regulate the welding pressure of the welding head.

2. A spot welding machine with self-adjusting welding head pressure according to claim 1, characterized in that: The X-axis motion mechanism comprises: A driving member 1, connected to the fixed bracket; A transmission mechanism, one end of which is connected to an output end of the driving member; The first threaded rod is connected to the other end of the transmission mechanism and is rotatably connected to the fixed bracket; The threaded block 1 is threadedly connected to the threaded rod 1, and the top is connected to the bottom of the connecting plate; The second slide rail is connected to the fixed bracket and is slidably connected to the bottom of the connecting plate. The second slide rail is horizontally arranged along the X-axis direction.

3. A spot welding machine with self-adjusting welding head pressure according to claim 1, characterized in that: The Z-axis motion mechanism comprises: A second driving member connected to the connecting plate; The second threaded rod is connected to the output end of the second driving member and is threadedly connected to the mounting bracket, and the second threaded rod is rotatably connected to the connecting plate; The second limiting slider has a top connected to the bottom of the mounting bracket; The slide rail three is connected to the top of the connecting plate and is slidably connected to the limiting slider two. The slide rail three is horizontally arranged along the Z-axis direction.

4. A spot welding machine with self-adjusting welding head pressure according to claim 1, characterized in that: The Y-axis motion mechanism comprises: A driving member three is connected to the mounting bracket; The threaded rod three is connected to the output end of the driving member three and is rotationally connected to the mounting bracket; The limiting slider three is threadedly connected with the threaded rod three; The slide rail four is connected to the mounting bracket and is slidably connected to the limit slider three. The slide rail four is vertically arranged along the Y-axis direction.

5. A spot welding machine with self-adjusting welding head pressure according to claim 4, characterized in that: The pressure regulating mechanism comprises: The elastic member has a top end connected to the limit slider; A limiting slider 1, connected to the bottom end of the elastic member; A slide rail 1 is connected to the mounting bracket and is slidably connected to a limit slider 1, wherein the slide rail 1 is vertically arranged along the Y-axis direction; A fixed seat is slidably connected with the limiting slider, the fixed seat is located at the bottom of the limiting slider and abuts against it, and the fixed seat is connected with the welding head; A tension spring, the top end of which is connected to a limit slider, and the bottom end of which is connected to a fixed seat, and the tension spring is in a stretched state; The pressure sensor is connected to the workbench.

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