Automatic welding device for automobile parts

Abstract

The utility model relates to an automatic welding device for automobile parts, which comprises a bottom plate and a welding head, a clamping mechanism is arranged on the bottom plate, and the welding head is arranged above the bottom plate through a welding adjusting mechanism; the number of the clamping mechanisms is two, and the clamping mechanisms are symmetrically arranged on the bottom plate. On the basis of gear transmission, lead screw and nut transmission and hydraulic cylinder driving, multi-degree-of-freedom displacement is provided for the welding head, so that welding of straight lines, positive arc lines, non-positive arc lines and arc lines or straight line welding lines which are not parallel to the upper end face of the bottom plate is achieved, and the application range is wide; the multiple sleeves, the first adjusting rods, the second adjusting rods and the pressing plates are arranged to clamp the to-be-welded workpiece, adjustment can be conducted according to the structure and shape of the to-be-welded workpiece, clamping is convenient, and operation is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts processing, especially an automobile parts automatic welding device. BACKGROUND

[0002] Welding, also known as soldering, is a manufacturing process and technology that joins metal or other thermoplastic materials such as plastic through heating, high temperature, or high pressure. There are many energy sources for modern welding, including gas flame, electric arc, laser, electron beam, friction, and ultrasonic waves.

[0003] The joint formed by welding two connected bodies is called a weld. The two sides of the weld will undergo organizational and performance changes when welded, and this area is called the heat-affected zone.

[0004] Current automobile parts also need to be welded during production, and the existing technology is to use manual welding, which is more troublesome and time-consuming.

[0005] Chinese utility model patent CN215941944U provides an automatic welding device for automobile parts, which can expand the distance between the first support table and the second support table by setting the connecting rod, so that the welding head can more conveniently perform welding work. A collection groove is provided, and a large amount of debris will be produced during welding. These debris will splash everywhere and are very difficult to clean. The screen mesh can make the debris fall into the inside of the collection groove, facilitating cleaning. In the utility model, the installation seat is rotated by the rotary disc, thereby driving the welding head to weld at various angles, effectively improving the welding efficiency and saving a lot of time.

[0006] Although it realizes automatic welding, there are still the following technical defects in actual use:

[0007] The rotation of the turntable is driven by the driving device, thereby driving the welding head to move in an arc line. It cannot realize the welding of straight line and non-true circular arc line welds. The workpiece to be welded needs to be fixed on the support table using a tool, which is inconvenient to fix and affects the processing efficiency.

[0008] Therefore, an automatic welding device that can perform straight line, true circular arc line, and non-true circular arc line welding, and facilitates workers to install the workpiece to be welded is needed. SUMMARY

[0009] The technical problem to be solved by the utility model

[0010] It cannot realize the welding of straight line and non-true circular arc line welds, the workpiece is inconvenient to fix, and the processing efficiency is affected.

[0011] Technical solutions for solving technical problems

[0012] Other advantageous and partly inventive embodiments and extensions of the utility model are described in the following description.

[0013] An automobile accessory automatic welding device, comprising a base plate and a welding head, the base plate is provided with a clamping mechanism, the welding head is arranged above the base plate through a welding adjusting mechanism;

[0014] The number of clamping mechanisms is two and they are symmetrically arranged on the base plate;

[0015] The clamping mechanism comprises:

[0016] A sleeve is fixed to the base plate and has a first adjusting rod arranged inside;

[0017] The first adjusting rod is screw-fitted with the sleeve;

[0018] An installation lug is arranged on the outer wall of the base plate;

[0019] A second adjusting rod is screw rod-shaped and is fitted with the installation lug, and the installation lug is provided with a threaded hole matched with the second adjusting rod;

[0020] The end of the second adjusting rod away from the base plate is rotatably provided with a pressing plate.

[0021] Preferably, the welding adjusting mechanism comprises:

[0022] An installation plate is arranged at the outer edge of the base plate, a hydraulic cylinder is rotatably arranged on the installation plate, and an extension rod is arranged at the output end of the hydraulic cylinder;

[0023] A first motor is installed at one side of the hydraulic cylinder, and a gear is arranged at the output end of the first motor;

[0024] A transmission gear matched with the gear is arranged on the outer wall of the hydraulic cylinder;

[0025] A guide frame is installed at the end of the extension rod away from the hydraulic cylinder, a screw rod is rotatably arranged in the guide frame, and a second motor is arranged at the end of the guide frame and is in transmission with the screw rod;

[0026] A screw nut seat is arranged on the outer side of the screw rod, and the welding head is arranged on the screw nut seat.

[0027] Preferably, the installation plate is arranged corresponding to the center line of the base plate.

[0028] Preferably, the extension rod is arranged in a zigzag shape.

[0029] Preferably, the welding head is arranged on the end face of the screw nut seat close to the base plate.

[0030] Preferably, the screw rod axis swing plane is parallel to the upper end surface of the base plate.

[0031] Preferably, the first adjusting rod outer wall is provided with a cutting surface.

[0032] Preferably, the end of the first adjusting rod away from the sleeve is provided with a rubber head.

[0033] Effect of the utility model

[0034] Based on gear transmission, screw nut transmission and hydraulic cylinder driving, the welding head is provided with multi-degree of freedom displacement, thereby realizing linear, normal circular arc line, non-normal circular arc line, arc line or linear welding seam welding which is not parallel to the upper end surface of the base plate, and the utility model has wide application range.

[0035] The sleeves, the first adjusting rods, the second adjusting rods and the pressing plates are arranged to clamp the workpieces to be welded, and the workpieces to be welded can be adjusted according to the structure and shape of the workpieces to be welded, so that the clamping is convenient and the operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0036] The embodiments of the utility model will be described in detail below with reference to the drawings. In the drawings:

[0037] Figure 1 is a structural view of the utility model;

[0038] Figure 2 is a first working state schematic view of the utility model;

[0039] Figure 3 is a second working state schematic view of the utility model;

[0040] Figure 4 is a top view of the utility model;

[0041] Figure 5 is a side view of the utility model.

[0042] REFERENCE SIGNS

[0043] 1, base plate; 2, sleeve; 201, first adjusting rod; 201-1, cutting surface; 202, rubber head; 3, mounting lug; 301, second adjusting rod; 302, pressing plate; 4, mounting plate; 401, hydraulic cylinder; 401-1, telescopic rod; 402, first motor; 402-1, gear; 402-2, transmission tooth; 403, guide frame; 404, second motor; 404-1, screw rod; 404-2, nut seat; 404-3, welding head; 405, workpiece to be welded. DETAILED DESCRIPTION

[0044] An automobile accessory automatic welding device according to an embodiment of the present application will be described below with reference to the drawings.

[0045] Please refer to Figures 1-5 As shown in the drawings, an automobile accessory automatic welding device according to an embodiment of the present application is provided, which comprises a base plate 1 and a welding head 404-3, and a clamping mechanism and a welding adjusting mechanism arranged on the base plate 1.

[0046] The clamping mechanism is used for clamping and fixing a workpiece 405 to be welded, and the welding adjusting mechanism is used for adjusting the position of the welding head 404-3 relative to the workpiece 405 to be welded and enabling the welding head 404-3 to move in multiple degrees of freedom.

[0047] As to the clamping mechanism, two are provided and symmetrically arranged along the base plate 1, which comprises:

[0048] A sleeve 2 is fixed to the base plate 1.

[0049] A first adjusting rod 201 is rotationally arranged in the sleeve 2.

[0050] A rubber head 202 is fixed to the end of the first adjusting rod 201 away from the sleeve 2.

[0051] Specifically, the first adjusting rod 201 is screw-fitted with the inner wall of the sleeve 2, i.e., the first adjusting rod 201 is provided as a threaded rod, and the inner wall of the sleeve 2 is engraved with internal threads matched with the threaded rod.

[0052] Further, the outer wall of the first adjusting rod 201 is provided with a cutting surface 201-1.

[0053] Specifically, based on the provision of the cutting surface 201-1, the first adjusting rod 201 is a stretching body with a cross section composed of two symmetrical arcs and two symmetrical straight lines.

[0054] That is, it is convenient for the staff to clamp the two cutting surfaces 201-1 to rotate the first adjusting rod 201, so as to avoid the staff from exerting force or damaging the external threads of the outer wall of the first adjusting rod 201.

[0055] Any clamping mechanism comprises at least four sleeves 2, first adjusting rods 201, rubber heads 202 and cutting surfaces 201-1, and the number of the cutting surfaces 201-1 corresponds to the number of the first adjusting rods 201.

[0056] In this way, the workpiece 405 to be welded can be supported.

[0057] In use: the worker places the workpiece 405 to be welded on the top end of the first adjusting rod 201, and for different shapes of the workpiece 405 to be welded, the worker can adjust the relative height between the adjusting rods through the threaded assembly of the first adjusting rod 201 and the sleeve 2, so as to change the height of the end support point of the first adjusting rod 201, and then realize the support of the workpiece 405 to be welded with different shapes and structures;

[0058] Preferably, the rubber head 202 can avoid scratching the workpiece 405 to be welded, and the setting of the cutting surface 201-1 can assist the worker to rotate the first adjusting rod 201 labor-savingly and avoid damaging the external thread on the outer wall of the first adjusting rod 201;

[0059] The clamping mechanism further comprises:

[0060] The mounting ear 3 is arranged on the outer edge of the bottom plate 1 and corresponds to the sleeve 2;

[0061] The second adjusting rod 301 is arranged on the mounting ear 3;

[0062] Specifically, the second adjusting rod 301 is a threaded rod, and the mounting ear 3 is provided with a threaded hole matched with the threaded rod, and the threaded rod is matched with the threaded hole;

[0063] The pressing plate 302 is rotationally arranged on the end of the second adjusting rod 301 away from the mounting ear 3;

[0064] Specifically, the side wall of the pressing plate 302 close to the bottom plate 1 is provided with a rubber pad;

[0065] In this way, the pressing plate 302 can avoid damaging the workpiece 405 to be welded, and the friction between the pressing plate 302 and the workpiece 405 to be welded can be increased, and the clamping stability can be improved;

[0066] Any clamping mechanism comprises at least two mounting ears 3, second adjusting rods 301 and pressing plates 302;

[0067] That is, the sleeve 2, the first adjusting rod 201 and the rubber head 202 realize the support of the workpiece 405 to be welded, and the mounting ear 3, the second adjusting rod 301 and the pressing plate 302 are used to press the workpiece 405 to be welded onto the rubber head 202 at the end of the first adjusting rod 201, so as to complete the clamping of the workpiece 405 to be welded;

[0068] In use, since the number of clamping mechanisms is two and symmetrically arranged on the bottom plate 1, the worker places two to-be-welded workpieces 405 on the plurality of first adjusting rods 201 included in the two clamping mechanisms respectively, adjusts the positions of the first adjusting rods 201 and the second adjusting rods 301 according to the shape, structure and position of the welding surface of the to-be-welded workpieces 405, and fixes and clamps the to-be-welded workpieces 405, thereby facilitating subsequent welding work;

[0069] Regarding the welding adjusting mechanism, which is located between the two clamping mechanisms and above the two clamping mechanisms, it comprises:

[0070] The mounting plate 4 is arranged at the outer edge of the bottom plate 1 and corresponds to the center line of the bottom plate 1;

[0071] The hydraulic cylinder 401 is rotatably arranged on the mounting plate 4, and the output end thereof is provided with an extension rod 401-1;

[0072] Specifically, the extension rod 401-1 is arranged in a broken line shape;

[0073] The first motor 402 is mounted on the bottom plate 1 and located at one side of the hydraulic cylinder 401, and the output end thereof is provided with a gear 402-1;

[0074] The transmission tooth 402-2 is arranged on the outer wall of the hydraulic cylinder 401, and the gear 402-1 is engaged with the transmission tooth 402-2;

[0075] That is, the first motor 402 outputs to drive the gear 402-1 to rotate, and based on the gear transmission principle, the hydraulic cylinder 401 is driven to rotate through the transmission tooth 402-2, so as to change the position of the end portion of the extension rod 401-1 away from the hydraulic cylinder 401;

[0076] The guide frame 403 is arranged at the end portion of the extension rod 401-1 away from the hydraulic cylinder 401;

[0077] Specifically, the first motor 402 outputs to drive the hydraulic cylinder 401 to rotate through the gear 402-1 and the transmission tooth 402-2, and then drives the guide frame 403 to swing in the plane through the extension rod 401-1, and the swing plane of the guide frame 403 is parallel to the upper end surface of the bottom plate 1;

[0078] The lead screw 404-1 is rotatably mounted in the guide frame 403;

[0079] The second motor 404 is arranged at one end of the guide frame 403 and in transmission with the lead screw 404-1;

[0080] The nut seat 404-2 is arranged on the outer wall of the lead screw 404-1 and slides in the inside of the guide frame 403;

[0081] Specifically, the outer wall of the nut seat 404-2 and the inner wall of the guide frame 403 are respectively provided with a matching limiting groove and a limiting block (the limiting groove and the limiting block are not shown in the drawings, as they are derived from the prior art, and only for the purpose of realizing the transmission of the nut screw 404-1, no further elaboration on the detailed structure is made). Based on the screw nut transmission principle, when the rotational freedom of the nut seat 404-2 is limited, the nut screw 404-1 rotates to drive the nut seat 404-2 to move along the axis of the nut screw 404-1.

[0082] The welding head 404-3 is arranged on the end face of the nut seat 404-2 close to the bottom plate 1.

[0083] The guide frame 403 is provided with a plurality of material passing grooves (not labeled). In order to reduce the mass of the guide frame 403, thereby reducing the moving mass and improving the motion stability of the guide frame 403.

[0084] Moreover, based on the arrangement of the zigzag-shaped telescopic rod 401-1, interference of the telescopic rod 401-1 with the movement path of the nut seat 404-2 can be avoided.

[0085] Specifically, the first motor 402 and the second motor 404 are both electrically controlled speed regulating motors, and the hydraulic cylinder 401 is an electrically controlled speed regulating hydraulic cylinder 401, which is controlled by a controller to realize electrically controlled variable speed movement of the gear 402-1, the telescopic rod 401-1 and the nut screw 404-1, thereby realizing multi-degree-of-freedom displacement of the welding head 404-3 based on program control.

[0086] More specifically, the controller is a PLC controller, and the welding head 404-3, the first motor 402, the second motor 404 and the hydraulic cylinder 401 are all derived from the prior art, and their electrical connection mode and control principle are not described in detail.

[0087] Normal use state

[0088] S1, clamping and fixing of the two workpieces 405 to be welded is completed by the clamping mechanism.

[0089] S2, the welding medium is applied, placed and attached between the two workpieces 405 to be welded.

[0090] S3, according to different welding, the electric control program of the first motor 402, the second motor 404 and the hydraulic cylinder 401 is adjusted, and then the welding head 404-3 is driven to displace to complete the welding of the workpieces 405 to be welded.

[0091] First, when the weld is a straight line, the first motor 402, the gear 402-1, the transmission tooth 402-2, the hydraulic cylinder 401 drive the telescopic rod 401-1 to rotate until the shaft line of the lead screw 404-1 is parallel to the weld, the hydraulic cylinder 401 is adjusted to drive the telescopic column to vertically displace the bottom plate 1 until the welding head 404-3 contacts the weld, the second motor 404 is started to drive the welding head 404-3 to displace linearly based on the cooperation of the lead screw 404-1, the nut seat 404-2 and the guide frame 403, and the welding work is completed;

[0092] Second, when the weld is a positive circular arc line, the hydraulic cylinder 401 and the second motor 404 are adjusted until the welding head 404-3 contacts the weld, the first motor 402 is started to drive the guide frame 403 to swing through the gear 402-1, the transmission tooth 402-2, the hydraulic cylinder 401 and the telescopic rod 401-1, thereby driving the nut seat 404-2 and the welding head 404-3 in the guide frame 403 to swing, and the welding work is completed;

[0093] Third, when the weld is a non-positive circular arc line, the hydraulic cylinder 401 and the second motor 404 are adjusted until the welding head 404-3 contacts the weld, the first motor 402 is started to drive the guide frame 403 to swing through the gear 402-1, the transmission tooth 402-2, the hydraulic cylinder 401 and the telescopic rod 401-1, thereby driving the nut seat 404-2 and the welding head 404-3 in the guide frame 403 to swing, and the second motor 404 is started to drive the welding head 404-3 to displace based on the cooperation of the lead screw 404-1, the nut seat 404-2 and the guide frame 403;

[0094] The welding head 404-3 is simultaneously driven by the lead screw nut 404-1, the first motor 402 and the gear 402-1, that is, the rotation and the linear motion are synchronous, the non-positive circular arc line motion can be realized, and the welding work is completed;

[0095] Finally, when the weld is an arc line or a straight line which is not parallel to the upper end face of the bottom plate 1, based on the operation process of the third, the telescopic output of the hydraulic cylinder 401 is added, and the arc line or the straight line welding work which is not parallel to the upper end face of the bottom plate 1 is realized.

[0096] Compared with the prior art, the utility model has the following characteristics:

[0097] Based on the gear 402-1 transmission, the lead screw nut transmission and the hydraulic cylinder 401 driving, the welding head 404-3 is provided with multi-degree-of-freedom displacement, thereby realizing the straight line, the positive circular arc line, the non-positive circular arc line and the arc line or the straight line welding seam welding which is not parallel to the upper end face of the bottom plate 1, and the application range is wide;

[0098] The sleeves 2, the first adjusting rod 201, the second adjusting rod 301 and the pressing plate 302 are arranged to clamp the workpiece 405 to be welded, and the workpiece 405 to be welded can be conveniently clamped and simply operated according to the structure and shape of the workpiece 405 to be welded.

[0099] The utility model is not limited to the embodiment, and various modifications can be implemented without departing from the spirit.

Claims

1. An automatic welding device for automobile parts, characterized by: The utility model relates to a welding device, including bottom plate (1) and welding head (404-3), the bottom plate (1) is provided with clamping mechanism, the welding head (404-3) is set up above the bottom plate (1) through welding adjustment mechanism, The number of the clamping mechanism is two and is symmetrically arranged on the bottom plate (1). The clamping mechanism comprises: A sleeve (2) is fixed to the bottom plate (1) and has a first adjusting rod (201) arranged inside. The first adjusting rod (201) is screw-fitted with the sleeve (2). An installation lug (3) is arranged on the outer wall of the bottom plate (1). A second adjusting rod (301) is arranged as a threaded rod and is fitted with the installation lug (3), and the installation lug (3) is provided with a threaded hole matched with the second adjusting rod (301). A pressing plate (302) is rotatably arranged at the end of the second adjusting rod (301) away from the bottom plate (1).

2. The automatic welding device for automobile parts according to claim 1, characterized in that: The welding adjustment mechanism comprises: An installation plate (4) is arranged at the outer edge of the bottom plate (1), and a hydraulic cylinder (401) is rotatably arranged on the installation plate (4), and an extension rod (401-1) is arranged at the output end of the hydraulic cylinder (401). A first motor (402) is arranged at one side of the hydraulic cylinder (401), and a gear (402-1) is arranged at the output end of the first motor (402). A transmission gear (402-2) matched with the gear (402-1) is arranged on the outer wall of the hydraulic cylinder (401). A guide frame (403) is arranged at the end of the extension rod (401-1) away from the hydraulic cylinder (401), a lead screw (404-1) is rotatably arranged in the guide frame (403), and a second motor (404) is arranged at the end of the guide frame (403) and is in transmission with the lead screw (404-1). A nut seat (404-2) is arranged on the outer side of the lead screw (404-1), and a welding head (404-3) is arranged on the nut seat (404-2).

3. The automatic welding device for automobile parts according to claim 2, characterized in that: The installation plate (4) is arranged corresponding to the center line of the bottom plate (1).

4. The automatic welding device for automobile parts according to claim 2, characterized in that: The extension rod (401-1) is arranged in a broken line shape.

5. The automatic welding device for automobile parts according to claim 2, characterized in that: The welding head (404-3) is arranged on the end face of the nut seat (404-2) close to the bottom plate (1).

6. The automatic welding device for automobile parts according to claim 2, characterized in that: The axis swing plane of the lead screw (404-1) is parallel to the upper end face of the bottom plate (1).

7. The automatic welding device for automobile parts according to claim 1, characterized in that: A cutting surface (201-1) is arranged on the outer wall of the first adjusting rod (201).

8. The automatic welding device for automobile parts according to claim 1, characterized in that: A rubber head (202) is arranged at the end of the first adjusting rod (201) away from the sleeve (2).

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