Positioning mechanism of automatic precision spot welding machine

Abstract

The utility model relates to the technical field of spot welding positioning, in particular to a positioning mechanism of an automatic precise spot welding machine, which comprises a support frame, the support frame is rectangular without one side, and a reinforcing rod is fixedly connected between two parallel edges in the horizontal direction. A plurality of parallel supporting rods are fixedly arranged on the upper end face of the supporting frame and the upper end face of the reinforcing rod, a carrying plate is fixedly arranged on the multiple supporting rods equal in length, and a worker firstly starts a driving motor and enables a reciprocating lead screw fixedly connected to the output end of the driving motor to rotate; the reciprocating screw rod is driven to rotate, so that the bearing plate in threaded connection with the reciprocating screw rod moves, materials placed on the bearing plate are controlled to move to a proper position, at the moment, a servo motor on the clamping device is controlled, so that a threaded rod fixed to the output end of the servo motor rotates, and the clamping device in threaded connection with the threaded rod moves.

Description

Technical Field

[0001] The utility model relates to the technical field of spot welding positioning, in particular to a positioning mechanism of an automatic precision spot welding machine. Background Art

[0002] A spot welder is a mechanical device that uses the principle of double-sided, double-point overcurrent welding. During operation, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode through the other electrode, an instantaneous thermal weld is formed at the two contact resistance points. The welding current instantly flows from the other electrode along the two workpieces to this electrode to form a loop without damaging the internal structure of the workpiece being welded.

[0003] The spot welding machine adopts the principle of double-sided double-point overcurrent welding. During operation, two electrodes pressurize two layers of metal sheets to form a contact resistance between them. When the welding current passes through the two contact resistances, a thermal weld is formed. At present, the positioning method for welding multiple sheet metal parts together is mainly manual positioning. The sheet metal parts are manually spliced ​​together one by one according to the welding requirements, and then placed on the electrodes for welding. In terms of existing technology: the processing of a finished product requires manual positioning of the sheet metal parts one by one, which is time-consuming and labor-intensive, and the processing efficiency is low. Human factors will affect the positioning accuracy to varying degrees, resulting in poor positioning effects and a high scrap rate of finished products. During manual positioning, the worker's hands need to be fixed with the pressurized equipment before they can leave, and the safety of the positioning process is low. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning mechanism for an automatic precision spot welding machine. According to the existing technology, the processing of a finished product requires manual positioning of sheet metal parts one by one, which is time-consuming and labor-intensive, and has low processing efficiency; human factors will affect the positioning accuracy to varying degrees, resulting in poor positioning effects and a high scrap rate of finished products; during manual positioning, the worker's hands need to be fixed by a pressurized device before they can be removed, and the safety of the positioning process is low.

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

[0006] A positioning mechanism for an automatic precision spot welding machine, comprising a support frame, the support frame being in the form of a rectangle with one side missing, and a reinforcement rod being fixedly connected between two parallel edges in the horizontal direction, a plurality of mutually parallel support rods being fixedly arranged on the upper end surfaces of the support frame and the reinforcement rods, and a carrier plate being fixedly arranged on the plurality of support rods of equal length, a housing being fixedly arranged on the carrier plate, a processing mechanism for welding materials being fixedly arranged on the housing, and a clamping mechanism for fixing the material to be processed being fixedly arranged on the carrier plate at the bottom of the processing mechanism;

[0007] The clamping mechanism includes two parallel brackets fixedly arranged on the loading plate, a reciprocating screw is rotatably arranged between the two brackets, a driving motor is fixedly arranged on one of the brackets, and the output end of the driving motor is fixedly connected to the reciprocating screw, and a loading plate is threadedly connected to the reciprocating screw.

[0008] Preferably, reinforcing ribs for reinforcing the device are fixedly provided on the bottom ends of the support rod and the loading plate, and a right triangle is formed between the support rod, the loading plate and the reinforcing ribs.

[0009] Preferably, two guide plates parallel to each other are fixedly provided on the upper end surface of the loading plate, and the two guide plates are evenly distributed on both sides of the reciprocating screw rod. The guide plates and the reciprocating screw rod are arranged parallel to each other, and a guide rail is fixedly provided on the upper end surface of the guide plate, and the loading plate and the guide rail are slidably connected.

[0010] Preferably, the processing mechanism includes a cylinder fixedly arranged on the shell, an electric welder is fixedly arranged on the output end of the cylinder, a positioner is fixedly arranged in the shell, and an extruder is slidably arranged on the positioner.

[0011] Preferably, a clamp is slidably provided on the supporting plate, a threaded rod is rotatably provided on the supporting plate, a servo motor is fixedly provided on the supporting plate, the servo motor is fixedly connected to the output end of the threaded rod, and the clamp is threadedly connected to the threaded rod.

[0012] Preferably, the threaded rod is provided with two sections of threads, and the rotation directions of the two sections of threads are opposite.

[0013] Preferably, a positioning plate is fixedly provided on the carrying plate, and the positioning plate is engaged with the extruder.

[0014] Preferably, a groove is provided on the clamping end of the clamp, a spring is fixedly provided on the groove, and a pressing plate is fixedly provided on the other end of the spring.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model realizes that when a worker starts the device, the worker places the object to be processed on the clamping mechanism of the device through the clamping mechanism provided on the carrier plate. The worker first starts the driving motor and rotates the reciprocating screw fixedly connected to the output end of the driving motor, thereby moving the carrier plate threadedly connected to the reciprocating screw, thereby controlling the material placed on the carrier plate to move to a suitable position. At this time, the servo motor on the clamper is controlled to rotate the threaded rod fixed to the output end of the servo motor, and the clamper threadedly connected to the threaded rod moves, thereby realizing positioning and fixing processing of objects of various specifications and sizes, and facilitating processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the loading plate of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the clamp of the present utility model.

[0021] In the figure: 1. Support frame; 2. Reinforcement rod; 3. Support rod; 4. Loading plate; 41. Guide plate; 411. Guide rail; 5. Housing; 6. Processing mechanism; 61. Cylinder; 62. Positioner; 63. Extruder; 7. Clamping mechanism; 71. Bracket; 72. Reciprocating screw; 73. Drive motor; 74. Loading plate; 741. Positioning plate; 742. Reinforcement rib; 8. Clamp; 81. Threaded rod; 9. Spring; 91. Pressing plate. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] In order to enable those skilled in the art to better understand the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0024] Reference Figure 1-3A positioning mechanism for an automatic precision spot welding machine includes a support frame 1, the support frame 1 is arranged in a rectangular shape with one side missing, and a reinforcement rod 2 is fixedly connected between two parallel edges in the horizontal direction, a plurality of support rods 3 are fixedly arranged on the upper end surfaces of the support frame 1 and the reinforcement rod 2, and a plurality of support rods 3 of equal length are fixedly arranged on the support plate 4, a shell 5 is fixedly arranged on the support plate 4, a processing mechanism 6 for welding materials is fixedly arranged on the shell 5, and a clamping mechanism 7 for fixing the material to be processed is fixedly arranged on the bottom of the processing mechanism 6 on the support plate 4;

[0025] The clamping mechanism 7 includes two parallel brackets 71 fixedly arranged on the loading plate 4, and a reciprocating screw 72 is rotatably arranged between the two brackets 71. A driving motor 73 is fixedly arranged on one of the brackets 71, and the output end of the driving motor 73 is fixedly connected to the reciprocating screw 72, and a supporting plate 74 is threadedly connected to the reciprocating screw 72.

[0026] Reference Figure 1-3 , reinforcing ribs 742 for reinforcing the device are fixedly provided on the bottom ends of the support rod 3 and the loading plate 4, and a right triangle is formed between the support rod 3, the loading plate 4 and the reinforcing ribs 742. By providing the reinforcing ribs 742 between the support rod 3 and the loading plate 4, the overall stability of the reinforcing device is increased.

[0027] Reference Figure 2-4 Two mutually parallel guide plates 41 are fixedly provided on the upper end surface of the loading plate 4. The two guide plates 41 are evenly distributed on both sides of the reciprocating screw 72. The guide plates 41 and the reciprocating screw 72 are arranged parallel to each other. A guide rail 411 is fixedly provided on the upper end surface of the guide plate 41. The carrying plate 74 is slidably connected to the guide rail 411. Through the guide plate 41 set on the loading plate 4, when the staff controls the rotation of the drive motor 73, the reciprocating screw 72 fixedly connected to the output end of the drive motor 73 rotates, thereby controlling the movement of the clamping mechanism 7.

[0028] Reference Figure 1-2 The processing mechanism 6 includes a cylinder 61 fixedly arranged on the outer shell 5, an electric welder is fixedly arranged on the output end of the cylinder 61, a positioner 62 is fixedly arranged in the outer shell 5, and an extruder 63 is slidably arranged on the positioner 62. Through the cylinder 61 arranged on the outer shell 5, the clamping mechanism 7 fixedly arranged on the output end of the cylinder 61 is moved when the staff starts the cylinder 61.

[0029] Reference Figure 2-3A clamper 8 is slidingly provided on the carrying plate 74, a threaded rod 81 is rotatably provided on the carrying plate 74, a servo motor is fixedly provided on the carrying plate 74, the servo motor is fixedly connected to the output end of the threaded rod 81, and the clamper 8 is threadedly connected to the threaded rod 81. By setting the threaded rod 81 on the carrying plate 74, when the staff starts the servo motor, the threaded rod 81 fixedly connected to the output end of the servo motor rotates, thereby controlling the movement of the clamper 8 threadedly connected to the threaded rod 81, and realizing fixed processing of the material to be processed.

[0030] Reference Figure 2-4 The threaded rod 81 is provided with two sections of threads, and the rotation directions of the two sections of threads are set in opposite directions. By setting two sections of threads rotating in opposite directions on the threaded rod 81, it is achieved that when the threaded rod 81 rotates, the clamper 8 threadedly connected to the threaded rod 81 can move toward each other, thereby controlling the two clampers 8 to move toward each other to achieve fixed processing of materials of different sizes.

[0031] Referring to the figure, a positioning plate 741 is fixedly provided on the supporting plate 74, and the positioning plate 741 is engaged with the extruder 63. By setting the positioning plate 741 on the supporting plate 74, the material is fixedly engaged, which is convenient for the staff to process.

[0032] Reference Figure 2-4 A groove is provided on the clamping end of the clamp 8, a spring 9 is fixedly provided on the groove, and a pressing plate 91 is fixedly provided on the other end of the spring 9. The material fixed in the groove can be squeezed by the groove provided on the clamp 8 and the pressing plate 91 slidably provided on the clamp 8.

[0033] The specific solution is as follows: when using the device, the staff first moves the device to a suitable position, and increases the overall stability of the reinforcement device by setting the reinforcing ribs 742 between the support rod 3 and the loading plate 4. By setting the guide plate 41 on the loading plate 4, the staff can control the rotation of the drive motor 73 by rotating the reciprocating screw 72 fixedly connected to the output end of the drive motor 73, thereby controlling the movement of the clamping mechanism 7. When the staff starts the cylinder 61, the clamping mechanism 7 fixedly set on the output end of the cylinder 61 moves. When the servo motor is started, the threaded rod 81 fixedly connected to the output end of the servo motor rotates, thereby controlling the movement of the clamper 8 threadedly connected to the threaded rod 81, thereby achieving fixed processing of the material to be processed. By setting the positioning plate 741 on the loading plate 74, the material is fixedly engaged, which is convenient for the staff to process.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative; within the spirit of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0035] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A positioning mechanism for an automatic precision spot welding machine, comprising a support frame (1), characterized in that: The support frame (1) is in the form of a rectangle with one side missing, and a reinforcing rod (2) is fixedly connected between two mutually parallel edges in the horizontal direction, a plurality of mutually parallel supporting rods (3) are fixedly arranged on the upper end surfaces of the support frame (1) and the reinforcing rod (2), and a carrier plate (4) is fixedly arranged on the plurality of supporting rods (3) of equal length, a shell (5) is fixedly arranged on the carrier plate (4), a processing mechanism (6) for welding materials is fixedly arranged on the shell (5), and a clamping mechanism (7) for fixing the material to be processed is fixedly arranged on the carrier plate (4) at the bottom of the processing mechanism (6); The clamping mechanism (7) comprises two mutually parallel brackets (71) fixedly arranged on the loading plate (4), a reciprocating screw (72) being rotatably arranged between the two brackets (71), a driving motor (73) being fixedly arranged on one of the brackets (71), an output end of the driving motor (73) being fixedly connected to the reciprocating screw (72), and a bearing plate (74) being threadedly connected to the reciprocating screw (72).

2. The positioning mechanism of an automatic precision spot welding machine according to claim 1, characterized in that: Reinforcement ribs (742) for reinforcing the device are fixedly provided on the bottom ends of the support rod (3) and the loading plate (4), and a right triangle is formed between the support rod (3), the loading plate (4) and the reinforcement ribs (742).

3. The positioning mechanism of an automatic precision spot welding machine according to claim 1, characterized in that: Two mutually parallel guide plates (41) are fixedly provided on the upper end surface of the loading plate (4), and the two guide plates (41) are evenly distributed on both sides of the reciprocating screw rod (72). The guide plates (41) and the reciprocating screw rod (72) are arranged parallel to each other. A guide rail (411) is fixedly provided on the upper end surface of the guide plate (41), and the loading plate (74) is slidably connected to the guide rail (411).

4. The positioning mechanism of an automatic precision spot welding machine according to claim 1, characterized in that: The processing mechanism (6) comprises a cylinder (61) fixedly arranged on the housing (5), an electric welder fixedly arranged on the output end of the cylinder (61), a positioner (62) fixedly arranged in the housing (5), and an extruder (63) slidably arranged on the positioner (62).

5. The positioning mechanism of an automatic precision spot welding machine according to claim 1, characterized in that: A clamper (8) is slidably provided on the carrier plate (74), a threaded rod (81) is rotatably provided on the carrier plate (74), a servo motor is fixedly provided on the carrier plate (74), the servo motor is fixedly connected to the output end of the threaded rod (81), and the clamper (8) is threadedly connected to the threaded rod (81).

6. The positioning mechanism of an automatic precision spot welding machine according to claim 5, characterized in that: The threaded rod (81) is provided with two sections of threads, and the rotation directions of the two sections of threads are opposite.

7. The positioning mechanism of an automatic precision spot welding machine according to claim 4, characterized in that: A positioning plate (741) is fixedly provided on the bearing plate (74), and the positioning plate (741) is engaged with the extruder (63).

8. The positioning mechanism of an automatic precision spot welding machine according to claim 5, characterized in that: A groove is provided on the clamping end of the clamp (8), a spring (9) is fixedly provided on the groove, and a pressing plate (91) is fixedly provided on the other end of the spring (9).

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