A face projection welding bolt welding device

Abstract

The application relates to the technical field of welding equipment, and discloses a face projection welding bolt welding device, which comprises a stud welding machine body, an upper electrode column and a lower electrode plate arranged on the stud welding machine body respectively, and driving mechanisms arranged on the two side surfaces of the stud welding machine body. The face projection welding bolt welding device is provided with the driving mechanisms composed of first air cylinders, second air cylinders and a first linear module, can realize flexible adjustment of the spatial position of a workpiece, can meet the requirements of different welding positions, does not need workers to frequently move the workpiece manually, improves the convenience and flexibility of welding operation, is provided with a workpiece clamping assembly, the fourth air cylinder is used for driving the upper and lower movement of a pressing plate, stable clamping of workpieces with different thicknesses is realized, the applicability of the device is improved, the inner bottom wall of the C-shaped plate and the rubber anti-skid setting on the bottom of the pressing plate increase the friction force between the workpiece and the clamping assembly, and the workpiece is prevented from sliding during the welding process.

Description

Technical Field

[0001] This application relates to the field of welding equipment technology, specifically to a welding device for end-face projection welding bolts. Background Technology

[0002] In industrial production, bolt projection welding is a common connection process, widely used in automobile manufacturing, machining, electronic equipment and many other fields. Bolt projection welding achieves a strong connection by melting the bolt projection with the workpiece surface under certain pressure and current. It has the advantages of high connection strength and good reliability.

[0003] In the traditional bolt projection welding process, the worker first needs to place the workpiece to be welded in the designated position between the upper and lower electrodes. After the workpiece is placed, the worker needs to manually insert the bolt into the pre-set welding position on the workpiece. Then, the cylinder is started to drive the upper electrode to move downward, applying pressure to the bolt. At the same time, the power is turned on, so that the bolt projection and the workpiece surface melt under the combined action of current and pressure, thus achieving welding.

[0004] However, after completing one welding operation, if there are other welding points on the workpiece, the worker needs to manually move the workpiece and readjust the next welding point to the correct position between the upper and lower electrodes. Then, the operation of inserting bolts and starting the cylinder to weld is repeated. The entire welding process is heavily dependent on manual operation. From placing the workpiece and inserting bolts to moving the workpiece, every step needs to be completed by the worker, which consumes a lot of time and makes it impossible to achieve continuous and efficient welding operations. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a welding device for end-face projection welding bolts, which has advantages such as automatic welding and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a stud welding machine body, comprising an upper electrode post and a lower electrode plate respectively disposed on the stud welding machine body, and a driving mechanism disposed on both sides of the stud welding machine body; The drive mechanism includes two symmetrically arranged first cylinders, which are arranged along the height direction of the stud welding machine body. The output ends of the two first cylinders are fixedly connected to second cylinders, which are arranged along the length direction of the stud welding machine body. A first linear module is fixedly installed at the output ends of the two second cylinders, which is arranged along the width direction of the stud welding machine body. A workpiece clamping assembly is slidably connected to the front of the first linear module; A support frame is provided below the body of the stud welding machine, and a stud clamping mechanism is installed at the front end of the support frame. The stud clamping mechanism includes a second linear module mounted on the front end of a support frame. The second linear module is arranged along the width direction of the stud welding machine body. A slider is slidably connected to the second linear module. A third cylinder is arranged along the height direction of the stud welding machine body on the slider. A bidirectional cylinder is fixedly installed at the output end of the third cylinder along the width direction of the stud welding machine body. Two symmetrically arranged bolt clamps are fixedly connected to the two output ends of the bidirectional cylinder.

[0007] Furthermore, the workpiece clamping assembly includes a C-shaped plate, which is slidably connected to the first linear module. A fourth cylinder is fixedly installed on the upper surface of the C-shaped plate along the height direction of the stud welding machine body. A pressure plate is fixedly connected to the output end of the fourth cylinder, and the pressure plate is located between the inner top wall and the inner bottom wall of the C-shaped plate.

[0008] With the above scheme, the fourth cylinder drives the pressure plate to move up and down, which can achieve stable clamping of workpieces of different thicknesses and improve the applicability of the device.

[0009] Furthermore, the inner bottom wall of the C-shaped plate and the bottom of the pressure plate are both made of rubber anti-slip material, and the C-shaped plate is made of insulating material.

[0010] The above solution increases the friction between the workpiece and the clamping assembly, preventing the workpiece from sliding during welding; the C-shaped plate is made of insulating material to ensure the safety of operators.

[0011] Furthermore, a bracket is fixedly installed on the upper surface of the bolt clamp plate near the stud welding machine body. An air pipe is installed on the bracket along its height direction. An air nozzle is fixedly connected to the top of the air pipe and is inclined downward.

[0012] The above method allows for the cleaning of the bolt joint surface each time a bolt is transferred to a workpiece, preventing dust and impurities from affecting the welding quality and ensuring the strength and reliability of the weld.

[0013] Furthermore, the bottom end of the air tube is fixedly connected to the output end of an external air pump.

[0014] The above solution uses an air pump to provide a stable air source, enabling the air nozzle to continuously and effectively clean the bolt joints by blowing air, ensuring the cleaning effect.

[0015] Furthermore, the lower electrode plate is fixedly installed with the stud welding machine body, and a movable cylinder is installed above the stud welding machine body along its height direction. The output end of the movable cylinder is fixedly installed with the upper electrode post.

[0016] With the above scheme, the movable cylinder can drive the upper electrode post to move up and down, thereby achieving the tightening and welding operations of the bolts and providing the necessary pressure for the welding process.

[0017] Furthermore, the upper surface of the lower electrode plate is provided with a slot that runs along the length of the stud welding machine body.

[0018] With the above scheme, during processing, the workpiece is fixed by the clamping assembly, the first cylinder drives the cylinder to move up and down, the second cylinder drives the workpiece to move back and forth, and the first linear module drives the workpiece to move left and right. First, the first welding point is positioned above the groove, and the bottom of the workpiece contacts the lower electrode plate. The bolt is fed between the two bolt clamps by an external air-blowing screw feeder. The height is adjusted by the third cylinder, and the second linear module moves it above the first welding point. The bolt is inserted into the welding point, and the bidirectional cylinders move away from each other to loosen the bolt. The movable cylinder drives the upper electrode column to descend, tightening the bolt. The bottom end of the bolt is located inside the groove.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects: This end-face projection welding bolt welding device, by setting a drive mechanism consisting of a first cylinder, a second cylinder and a first linear module, realizes flexible adjustment of the workpiece in space, which can meet the needs of different welding positions, and eliminates the need for workers to frequently move the workpiece manually, thus improving the convenience and flexibility of welding operations. By setting up a workpiece clamping assembly and using a fourth cylinder to drive the pressure plate to move up and down, stable clamping of workpieces of different thicknesses is achieved, improving the applicability of the device. At the same time, the rubber anti-slip setting on the inner bottom wall of the C-shaped plate and the bottom of the pressure plate increases the friction between the workpiece and the clamping assembly, preventing the workpiece from sliding during the welding process. In addition, the C-shaped plate is made of insulating material, ensuring the safety of the operator. By setting up a stud clamping mechanism and utilizing the cooperation of the second linear module, the third cylinder, and the bidirectional cylinder, the precise delivery and positioning of the bolts are achieved. At the same time, with the help of the air pipes and nozzles set on the bolt clamp plate near the stud welding machine body, the surface of the bolt joint of the workpiece can be cleaned each time the bolt is transferred to the workpiece, so as to avoid dust, impurities, etc. affecting the welding quality and ensure the strength and reliability of the welding. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this application; Figure 2 This is a side view of the overall structure of this application; Figure 3 This is a structural diagram of the drive mechanism and workpiece clamping assembly of this application; Figure 4 This is a structural diagram of the stud clamping mechanism of this application; Figure 5 This is a structural diagram of the air nozzle in this application.

[0021] In the picture: 1. Stud welding machine body; 101. Upper electrode post; 102. Lower electrode plate; 103. Movable cylinder; 104. Groove; 2. Drive mechanism; 201. First cylinder; 202. Second cylinder; 203. First linear module; 3. Workpiece clamping assembly; 301. C-shaped plate; 302. Fourth cylinder; 303. Pressure plate; 4. Support frame; 5. Stud clamping mechanism; 501. Second linear module; 502. Slider; 503. Third cylinder; 504. Two-way cylinder; 505. Bolt clamping plate; 6. Stent; 7. Trachea; 8. Air valve. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Please see Figures 1-5 This embodiment of a stud welding machine body includes a stud welding machine body 1, an upper electrode post 101 and a lower electrode plate 102 respectively disposed on the stud welding machine body 1, a drive mechanism 2 disposed on both sides of the stud welding machine body 1, the lower electrode plate 102 being fixedly installed with the stud welding machine body 1, and a movable cylinder 103 disposed on the upper part of the stud welding machine body 1 along its height direction. The output end of the movable cylinder 103 is fixedly installed with the upper electrode post 101. The movable cylinder 103 can drive the upper electrode post 101 to move up and down, thereby realizing the tightening and welding operation of the bolt and providing the necessary pressure for the welding process.

[0024] The drive mechanism 2 includes two symmetrically arranged first cylinders 201, which are arranged along the height direction of the stud welding machine body 1. The output ends of the two first cylinders 201 are fixedly connected to second cylinders 202, which are arranged along the length direction of the stud welding machine body 1. A first linear module 203 is fixedly installed at the output ends of the two second cylinders 202, which is arranged along the width direction of the stud welding machine body 1. By utilizing the driving action of the first cylinders 201, the second cylinders 202, and the first linear module 203 in three different directions, the workpiece can be flexibly adjusted in space to meet the needs of different welding positions.

[0025] A workpiece clamping assembly 3 is slidably connected to the front of the first linear module 203. A support frame 4 is provided below the stud welding machine body 1. A stud clamping mechanism 5 is installed at the front end of the support frame 4. The stud clamping mechanism 5 includes a second linear module 501 installed at the front end of the support frame 4. The second linear module 501 is arranged along the width direction of the stud welding machine body 1. A slider 502 is slidably connected to the second linear module 501. A third cylinder 503 is arranged along the height direction of the stud welding machine body 1 on the slider 502. A bidirectional cylinder 504 is fixedly installed at the output end of the third cylinder 503 along the width direction of the stud welding machine body 1. Two symmetrically arranged bolt clamps 505 are fixedly connected to the two output ends of 504. By installing an air-blowing screw feeder on one side of the stud welding machine body 1, with its outlet located above the bolt clamps 505, bolts can be conveniently and quickly supplied to the bolt clamps 505, realizing automated feeding. The air-blowing screw feeder is an automated feeding device that uses compressed air to blow out screws one by one and accurately deliver them to the designated position. Through specific track design and airflow control, it ensures that the screws arrive at the bolt clamps 505 in the correct posture and position, greatly improving feeding efficiency and accuracy, and reducing manual operation time and errors.

[0026] The workpiece clamping assembly 3 includes a C-shaped plate 301, which is slidably connected to the first linear module 203. A fourth cylinder 302 is fixedly installed on the upper surface of the C-shaped plate 301 along the height direction of the stud welding machine body 1. A pressure plate 303 is fixedly connected to the output end of the fourth cylinder 302. The pressure plate 303 is located between the inner top wall and the inner bottom wall of the C-shaped plate 301. The fourth cylinder 302 drives the pressure plate 303 to move up and down, which can achieve stable clamping of workpieces of different thicknesses and improve the applicability of the device. The inner bottom wall of the C-shaped plate 301 and the bottom of the pressure plate 303 are both made of rubber anti-slip material. The C-shaped plate 301 is made of insulating material, which can increase the friction between the workpiece and the clamping assembly and prevent the workpiece from sliding during the welding process. The C-shaped plate 301 is made of insulating material to ensure the safety of the operator.

[0027] A bracket 6 is fixedly installed on the upper surface of the bolt clamp 505 near the main body 1 of the stud welding machine. An air pipe 7 is installed on the bracket 6 along its height direction. An air nozzle 8 is fixedly connected to the top of the air pipe 7. The air nozzle 8 is set at an angle downward. Each time the bolt is transferred to the workpiece, the surface of the bolt joint of the workpiece can be cleaned to avoid dust, impurities and other factors affecting the welding quality and ensure the firmness and reliability of the welding. The bottom end of the air pipe 7 is fixedly connected to the output end of an external air pump. The air pump provides a stable air source so that the air nozzle 8 can continuously and effectively blow air to clean the bolt joint and ensure the cleaning effect.

[0028] The upper surface of the lower electrode plate 102 is provided with a slot 104 that runs along the length of the stud welding machine body 1. During processing, the workpiece is fixed by the clamping assembly, the first cylinder 201 drives the cylinder to move up and down, the second cylinder 202 drives the workpiece to move back and forth, and the first linear module 203 drives the workpiece to move left and right. First, the first welding point is positioned above the slot 104, and the bottom of the workpiece contacts the lower electrode plate 102. The bolt is fed between the two bolt clamps 505 by an external air-blowing screw feeder. The height is adjusted by the third cylinder 503, and the second linear module 501 moves it above the first welding point, inserting the bolt into the welding point. The two-way cylinders 504 move away from each other to loosen the bolts. The movable cylinder 103 drives the upper electrode post 101 to descend and tighten the bolts. The bottom end of the bolts is located inside the slot 104. Then, the power is turned on, so that the bolt protrusions and the workpiece surface melt under the combined action of current and pressure to achieve welding. After welding, the first cylinder 201 drives the workpiece to rise and remove the welded bolts from the slot 104. Then, the second cylinder 202 and the first linear module 203 adjust the position of the workpiece and move the second welding point above the lower electrode plate 102 and into contact with the lower electrode plate 102. The above welding steps are repeated until the welding of all welding points on the workpiece is completed.

[0029] The working principle of the above embodiment is as follows: The workpiece to be welded is placed in the C-shaped plate of the workpiece clamping assembly 3. The fourth cylinder 302, which is set on the upper surface of the C-shaped plate along the height direction of the stud welding machine body 1, is activated. The output end of the fourth cylinder 302 drives the pressure plate 303 to move downward until the pressure plate 303 fixes the workpiece. The position of the workpiece is adjusted by the drive mechanism 2 on both sides of the stud welding machine body 1. According to the approximate position of the first welding point of the workpiece, the first cylinder 201 is activated, which drives the second cylinder 202 and the first linear module 203 to move up and down as a whole, adjusting the position of the workpiece in the height direction. Then, the second cylinder 202 is activated, which drives the first linear module 203 and the workpiece to move back and forth, adjusting the position of the workpiece in the length direction. Finally, the first linear module 203 is activated, which drives the workpiece to move left and right, so that the first welding point of the workpiece is approximately located at a suitable position above the lower electrode plate 102, and ensures that the bottom of the workpiece can contact the lower electrode plate 102.

[0030] Bolts are fed using an external air-blowing screw feeder, which delivers the bolts to the two bolt clamping plates 505 of the stud clamping mechanism 5. After the bolts are delivered to the two bolt clamping plates 505, the third cylinder 503 is activated. The output end of the third cylinder 503 drives the bidirectional cylinder 504 and the bolt clamping plates 505 to move up and down, adjusting the position of the bolts in the height direction. Then, the second linear module 501 is activated. The second linear module 501 drives the slider 502, the third cylinder 503, the bidirectional cylinder 504, and the bolt clamping plates 505 to move along the width direction of the stud welding machine body 1, so that the bolts are precisely moved to the position directly above the first welding point of the workpiece.

[0031] During the process of moving the bolt above the workpiece welding point, a bracket 6 is fixedly installed on the upper surface of the bolt clamp 505 near the main body 1 of the stud welding machine. An air pipe 7 is installed along the height direction of the bracket 6. The top end of the air pipe 7 is fixedly connected to an inclined downward air nozzle 8, and the bottom end of the air pipe 7 is fixedly connected to the output end of an external air pump. When the bolt approaches the workpiece welding point, the air pump is started, providing a stable air source, so that the gas is sprayed out from the air nozzle 8 through the air pipe 7 to blow clean the surface of the bolt insertion joint of the workpiece, avoiding dust, impurities, etc. from affecting the welding quality and ensuring the strength and reliability of the weld.

[0032] After cleaning the welding point, the third cylinder 503 is activated to drive the bolt downwards, inserting it into the first welding point of the workpiece. The bidirectional cylinder 504 is then activated, moving its two output ends away from each other, thus loosening the bolt. A movable cylinder 103, positioned along the height of the stud welding machine body 1, is installed above it. The output end of the movable cylinder 103 is fixedly installed with the upper electrode post 101. Activating the movable cylinder 103 drives the upper electrode post 101 downwards, tightening the bolt inserted into the workpiece welding point. At this time, the bottom end of the bolt is located inside the slot 104 along the length of the stud welding machine body 1 on the upper surface of the lower electrode plate 102. Power is then applied, causing the bolt protrusion and the workpiece surface to melt under the combined action of current and pressure, thus achieving welding between the bolt and the workpiece.

[0033] After the first welding point is completed, if there are other welding points on the workpiece, the drive mechanism 2 is restarted. The first cylinder 201 moves the workpiece up and down, the second cylinder 202 moves the workpiece back and forth, and the first linear module 203 moves the workpiece left and right, moving the second welding point of the workpiece above the lower electrode plate 102 and making the bottom of the workpiece contact the lower electrode plate 102. Then, the above steps of bolt feeding, positioning, cleaning, insertion, and welding are repeated until the welding work of all welding points on the workpiece is completed.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stud welding device for end face projection welding bolts, comprising a stud welding machine body (1), an upper electrode post (101) and a lower electrode plate (102) respectively disposed on the stud welding machine body (1), characterized in that: The stud welding machine body (1) is provided with a drive mechanism (2) on both sides; The drive mechanism (2) includes two symmetrically arranged first cylinders (201), which are arranged along the height direction of the stud welding machine body (1). The output ends of the two first cylinders (201) are fixedly connected to second cylinders (202). The output ends of the two second cylinders (202) are arranged along the length direction of the stud welding machine body (1). A first linear module (203) is fixedly installed at the output ends of the two second cylinders (202). The first linear module (203) is arranged along the width direction of the stud welding machine body (1). The first linear module (203) is slidably connected to the front of a workpiece clamping assembly (3); A support frame (4) is provided below the stud welding machine body (1), and a stud clamping mechanism (5) is installed at the front end of the support frame (4). The stud clamping mechanism (5) includes a second linear module (501) installed at the front end of a support frame (4). The second linear module (501) is arranged along the width direction of the stud welding machine body (1). The second linear module (501) is slidably connected to a slider (502). The slider (502) is arranged along the height direction of the stud welding machine body (1) with a third cylinder (503). The output end of the third cylinder (503) is fixedly installed with a bidirectional cylinder (504) arranged along the width direction of the stud welding machine body (1). The two output ends of the bidirectional cylinder (504) are fixedly connected to two symmetrically arranged bolt clamps (505).

2. The end-face projection welding bolt welding device according to claim 1, characterized in that: The workpiece clamping assembly (3) includes a C-shaped plate (301), which is slidably connected to the first linear module (203). A fourth cylinder (302) is fixedly installed on the upper surface of the C-shaped plate (301) along the height direction of the stud welding machine body (1). A pressure plate (303) is fixedly connected to the output end of the fourth cylinder (302). The pressure plate (303) is located between the inner top wall and the inner bottom wall of the C-shaped plate (301).

3. The end-face projection welding bolt welding device according to claim 2, characterized in that: The inner bottom wall of the C-shaped plate (301) and the bottom of the pressure plate (303) are both made of rubber anti-slip material, and the C-shaped plate (301) is made of insulating material.

4. The end-face projection welding bolt welding device according to claim 1, characterized in that: A bracket (6) is fixedly installed on the upper surface of the bolt clamp (505) near the stud welding machine body (1). An air pipe (7) is installed on the bracket (6) along its height direction. An air nozzle (8) is fixedly connected to the top of the air pipe (7). The air nozzle (8) is set at an angle downward.

5. The end-face projection welding bolt welding device according to claim 4, characterized in that: The bottom end of the air pipe (7) is fixedly connected to the output end of the external air pump.

6. The end-face projection welding bolt welding device according to claim 1, characterized in that: The lower electrode plate (102) is fixedly installed with the stud welding machine body (1). A movable cylinder (103) is installed above the stud welding machine body (1) along its height direction. The output end of the movable cylinder (103) is fixedly installed with the upper electrode post (101).

7. The end-face projection welding bolt welding device according to claim 1, characterized in that: The upper surface of the lower electrode plate (102) is provided with a slot (104) that is arranged along the length direction of the stud welding machine body (1).

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