Straight pipe double-end spot welding machine

Abstract

The utility model discloses a straight pipe double-end spot welding machine which comprises a machine frame, an electric control box is arranged in the machine frame, welding devices are connected with the electric control box, and a working table plate, two terminal piece feeding mechanisms and two independent welding devices are arranged on the machine frame. One terminal piece feeding mechanism corresponds to one welding device, the two welding devices are arranged on the two sides of the working table plate, each welding device comprises a welding mechanism and a rotating mechanism, the discharging ends of the terminal piece feeding mechanisms are connected with the rotating mechanisms, a straight pipe placing mechanism is arranged on the working table plate, and a control end is arranged on the rack and connected with the electric cabinet. Double-end welding is adopted, efficiency is improved, straight pipe welding is accurate, and the yield is high.

Description

Technical Field

[0001] The utility model relates to a spot welding device, in particular to a double-head spot welding machine mainly for automatically feeding terminals for straight pipes for processing. Background Art

[0002] The double-head spot welding machine has two spot welding machines, which improves the welding efficiency and is thus applied in many processes. For straight pipes, when welding terminal pieces at both ends of the straight pipe, if there is only one spot welding head, it is necessary to weld one end of the straight pipe and then rotate the straight pipe to weld the other end. Or manual welding is used, which requires a high level of familiarity with the workers. And the terminal pieces are often conveyed manually, resulting in low overall efficiency. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a double-head spot welding machine for straight pipes.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A double-head spot welding machine for straight pipes includes a frame. An electric control box is arranged inside the frame. The welding device is connected to the electric control box. A workbench plate, two terminal piece feeding mechanisms, and two independent welding devices are arranged on the frame. One terminal piece feeding mechanism corresponds to one welding device. The two sets of welding devices are arranged on both sides of the workbench plate. The welding device includes a welding mechanism and a rotating mechanism. The discharging end of the terminal piece feeding mechanism is connected to the rotating mechanism. A straight pipe placing mechanism is arranged on the workbench plate. A control end is arranged on the frame and is connected to the electric control box.

[0006] As a further improvement, the rotating mechanism includes a rotating disk and a driving component. The rotating disk is arranged on the frame. The driving component is arranged inside the frame and is connected to the rotating disk. A terminal piece clamping component is arranged on the rotating disk.

[0007] As a further improvement, the terminal piece clamping component includes a fixing block and an adsorption magnet. The fixing block is locked on the rotating disk by bolts. The adsorption magnet is installed on the fixing block. A groove for accommodating the terminal piece is arranged on the rotating disk corresponding to the position of the adsorption magnet.

[0008] As a further improvement, the terminal piece feeding mechanism includes a vibrating disk. A feeding channel is connected to the vibrating disk. The discharging end of the feeding channel extends to the rotating disk.

[0009] As a further improvement, a terminal piece upper and lower limit cylinder is arranged on the frame. The driving rod of the terminal piece upper and lower limit cylinder extends downward and faces the feeding channel directly. A terminal piece inductor is arranged on one side of the terminal piece upper and lower limit cylinder.

[0010] As a further improvement, a cooling air duct is provided on the frame, and the cooling air duct blows air towards the adsorption magnet of the rotating disk. The cooling air duct is connected to a compressed air device.

[0011] As a further improvement, the welding mechanism includes a welding bracket, a welding cylinder, an electrode seat, and an electrode needle rod. The welding bracket is installed on the frame, the welding cylinder is installed on the welding bracket, a lifting block is connected to the driving rod of the welding cylinder, the electrode seat is installed on the lifting block, and the electrode needle rod is connected to the electrode seat.

[0012] As a further improvement, the straight pipe placement mechanism includes a placement block and a concentric positioning block. A placement groove is provided on the placement block, and the concentric positioning block is arranged on one side of the placement groove and abuts against the straight pipe from the side.

[0013] As a further improvement, a threaded rod is provided on the frame. One end of the threaded rod is installed through a bearing seat and is connected to a handwheel, and one of the welding devices is installed on the threaded rod through a nut slider.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects:

[0015] By adopting two welding mechanisms, the two ends of the straight pipe can be welded simultaneously, improving the efficiency, and using a vibrating disk for automatic feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic three-dimensional structure diagram of the utility model;

[0017] Figure 2 is a schematic front view structure diagram of the utility model;

[0018] Figure 3 is Figure 1 an enlarged schematic view of part A in

[0019] Figure 4 is Figure 1 an enlarged schematic view of part B in

[0020] Reference numerals:

[0021] Frame 1, workbench plate 2, terminal piece feeding mechanism 3, vibrating disk 31, feeding channel 32, welding mechanism 4, welding bracket 41, welding cylinder 42, electrode seat 43, electrode needle rod 44, lifting block 45, rotating disk 5, fixing block 6, adsorption magnet 7, control end 8, terminal piece upper and lower limit cylinder 9, terminal piece inductor 10, cooling air duct 11, placement block 12, concentric positioning block 13, placement groove 14, straight pipe 15, threaded rod 16, handwheel 17, support foot 18, terminal piece 19. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is 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 orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] As Figures 1-4 shown, a straight-tube double-head spot welder includes a frame 1. An electric control box is provided inside the frame 1. A workbench plate 2, two terminal piece feeding mechanisms 3 and two independent welding devices are provided on the frame 1. The welding devices are connected to the electric control box. One terminal piece feeding mechanism corresponds to one welding device. The two sets of welding devices are arranged on both sides of the workbench plate. The welding device includes a welding mechanism 4 and a rotating mechanism. The discharging end of the terminal piece feeding mechanism 2 is connected to the rotating mechanism. A straight-tube placing mechanism is provided on the workbench plate 2. A control end 8 is provided on the frame 1. The control end 5 is connected to the electric control box. Through the control terminal, processing parameters can be observed and input. The electric control box contains various electronic components, which play a necessary power supply and control role.

[0026] The rotating mechanism includes a rotating disk 5 and a driving component. The rotating disk 5 is arranged on the frame 1, and the driving component is arranged inside the frame. The driving component is connected to the rotating disk, and a terminal piece clamping component is arranged on the rotating disk. The driving component can be a motor, and the motor is connected to the rotating disk through a belt to drive the rotating disk to rotate. The rotating disk can be a multi-station turntable as required.

[0027] The terminal piece clamping component includes a fixed block 6 and an adsorption magnet 7. The fixed block 6 is locked on the rotating disk 5 by bolts, and the adsorption magnet 7 is installed on the fixed block 6. A groove for accommodating the terminal piece is arranged on the rotating disk 5 corresponding to the position of the adsorption magnet 7. The adsorption magnet can be a cobalt-containing high-temperature resistant magnet to ensure that the high temperature generated during welding will not damage the adsorption magnet. The terminal piece is usually a metal sheet. Therefore, by using the adsorption magnet for adsorption, it can ensure the stability when the rotating disk drives the terminal piece to rotate and prevent the problem of easy detachment.

[0028] The terminal piece feeding mechanism includes a vibrating disk 31, and a feeding channel 32 is connected to the vibrating disk 31. The discharging end of the feeding channel extends to the rotating disk 5. The terminal piece is placed into the vibrating disk and is conveyed along the feeding channel through vibration until it reaches the position of the rotating disk and just enters the rotating disk and is adsorbed by the adsorption magnet.

[0029] A terminal piece upper and lower limiting air cylinder 9 is arranged on the frame 1. The driving rod of the terminal piece upper and lower limiting air cylinder 9 extends downward and faces the feeding channel 32 directly. A terminal piece inductor 10 is arranged on one side of the terminal piece upper and lower limiting air cylinder 9. The downward extension of the terminal piece upper and lower limiting air cylinder can prevent the terminal piece from bouncing up and down during the conveying process.

[0030] A cooling air duct 11 is arranged on the frame 1. The cooling air duct 11 blows air towards the adsorption magnet 7 of the rotating disk. The cooling air duct 11 is connected to a compressed air device. After welding, the adsorption magnet will have a relatively high temperature, and the internal cooling is accelerated by blowing air through the cooling air duct to reduce the temperature.

[0031] The welding mechanism includes a welding bracket 41, a welding air cylinder 42, an electrode seat 43, and an electrode needle rod 44. The welding bracket 41 is installed on the frame 1, the welding air cylinder 42 is installed on the welding bracket 41, a lifting block 45 is connected to the driving rod of the welding air cylinder 42, the electrode seat 44 is installed on the lifting block 45, and the electrode needle rod 44 is connected to the electrode seat 43. The welding air cylinder 42 drives the electrode seat 43 and the electrode needle rod 44 to move up and down synchronously to complete the welding.

[0032] The straight pipe placing mechanism includes a placing block 12 and a concentric positioning block 13. A placing groove 14 is arranged on the placing block 12, and the concentric positioning block 13 is arranged on one side of the placing groove 14. The concentric positioning block 13 abuts against the side of the straight pipe 15 to ensure the accuracy of placement and ensure that the terminal piece is accurately welded on the straight pipe. Two welding devices are just located at both ends of the straight pipe.

[0033] In addition, a threaded rod 16 is provided on the frame 1. One end of the threaded rod 16 is installed through a bearing seat and is connected with a handwheel 17. One of the welding devices is installed on the threaded rod through a nut slider, and the other welding device is fixedly installed on the frame. By rotating the handwheel to drive the threaded rod to rotate, the welding device installed on the threaded rod is adjusted, so that the distance between the two welding devices can be adjusted to meet the processing requirements of straight pipes of different lengths and expand the applicability.

[0034] In addition, support feet 18 are installed on the bottom surface of the frame 1, and the support feet can be of a telescopic structure to facilitate height adjustment.

[0035] In the present utility model, the straight pipe 15 is manually installed in the placement groove 14 of the placement block 12. The terminal piece 19 is conveyed from the feeding mechanism to the rotating disk and is attracted by the adsorption magnet. The rotating disk rotates to turn the terminal piece to the position where the straight pipe is located, and the welding mechanism operates for welding. The two ends of the straight pipe can be welded simultaneously to improve the efficiency.

[0036] It should be noted that the above is only the preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A straight tube double-head spot welding machine, comprising a frame, characterized in that: An electric control box is provided in the frame, and the welding device is connected to the electric control box. A workbench, two terminal piece feeding mechanisms and two independent welding devices are provided on the frame. One terminal piece feeding mechanism corresponds to one welding device. Two sets of welding devices are arranged on both sides of the workbench. The welding device includes a welding mechanism and a rotating mechanism. The discharge end of the terminal piece feeding mechanism is connected to the rotating mechanism. A straight pipe placing mechanism is provided on the workbench. A control end is provided on the frame, and the control end is connected to the electric control box.

2. The straight tube double-head spot welding machine according to claim 1, characterized in that: The rotating mechanism comprises a rotating disk and a driving assembly. The rotating disk is arranged on a frame, the driving assembly is arranged in the frame, the driving assembly is connected to the rotating disk, and a terminal piece clamping assembly is arranged on the rotating disk.

3. The straight tube double-head spot welding machine according to claim 2, characterized in that: The terminal piece clamping assembly comprises a fixed block and an adsorption magnet. The fixed block is locked on the rotating disk by bolts. The adsorption magnet is mounted on the fixed block. A groove for accommodating the terminal piece is provided on the rotating disk corresponding to the position of the adsorption magnet.

4. The straight tube double-head spot welding machine according to claim 2, characterized in that: The terminal piece feeding mechanism comprises a vibration plate, a feeding channel is connected to the vibration plate, and a discharge end of the feeding channel extends to the rotating plate.

5. The straight tube double-head spot welding machine according to claim 4, characterized in that: The frame is provided with a terminal piece upper and lower limit cylinder, a driving rod of the terminal piece upper and lower limit cylinder extends downwardly facing the feeding channel, and a terminal piece sensor is provided on one side of the terminal piece upper and lower limit cylinder.

6. The straight tube double-head spot welding machine according to claim 2, characterized in that: The frame is provided with a cooling air duct, which blows air toward the adsorption magnet of the rotating disk, and the cooling air duct is connected to the compressed air equipment.

7. The straight tube double-head spot welding machine according to claim 1, characterized in that: The welding mechanism comprises a welding bracket, a welding cylinder, an electrode seat and an electrode needle rod. The welding bracket is mounted on a frame, the welding cylinder is mounted on the welding bracket, the driving rod of the welding cylinder is connected with a lifting block, the electrode seat is mounted on the lifting block, and the electrode needle rod is connected to the electrode seat.

8. The straight tube double-head spot welding machine according to claim 1, characterized in that: The straight tube placement mechanism comprises a placement block and a concentric positioning block. The placement block is provided with a placement groove. The concentric positioning block is arranged on one side of the placement groove. The concentric positioning block abuts against the side of the straight tube.

9. The straight tube double-head spot welding machine according to claim 1, characterized in that: The frame is provided with a threaded rod, one end of which is installed through a bearing seat and is equipped with a hand wheel, and a welding device is installed on the threaded rod through a nut slider.

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