Automatic projection welding equipment for nuts
By designing automatic projection welding equipment for nuts, including a circulating conveyor frame, workpiece detection structure and solder joint detection structure, the problem of lack of automatic detection in the existing technology is solved, and efficient and accurate welding quality assessment and automatic detection functions are achieved.
Patent Information
- Application Number
- CN202420966316.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The existing nut convex welding technology lacks the detection structure of the welding position of the workpiece, and relies on manual inspection after welding, which is inefficient and difficult to accurately evaluate the quality.
Design an automatic projection welding equipment for nuts, including a circulating conveyor frame, a workpiece detection structure and a welding spot detection structure. The circulating conveyor rack is used to transport the workpiece to the welding position. The workpiece detection structure detects the position of the workpiece interface through the front CCD camera, and the solder joint detection structure detects the solder joint condition through the rear CCD camera.
It realizes the automatic detection of the welding position and welding points of the workpiece, improves the welding efficiency, ensures the accuracy of the welding quality, and can effectively distinguish qualified products from unqualified products.
Smart Images
Figure CN222370614U_ABST
Abstract
Description
Technical Field
[0001] The utility model discloses an automatic projection welding device for nuts, belonging to the technical field of projection welding, and in particular relates to the technical field of automatic projection welding for nuts. Background Art
[0002] Nut projection welding is to weld nuts to the corresponding workpiece surface. In the automated production process, nut projection welding mainly involves projection welding machines and circulating feeding structures. There are corresponding conveying structures and projection welding machines on the market. However, in the welding process, there is not only a lack of detection structure for the state of the workpiece welding position, but also manual inspection of the welds after welding. Not only is the efficiency low, but most of the inspections are carried out by random sampling, so that the overall quality of the welding cannot be supported by accurate data. To solve the above problems, we proposed an automatic nut projection welding equipment. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an automatic projection welding device for nuts, thereby solving the problem that during the welding process, there is not only a lack of a detection structure for the state of the welding position of the workpiece, but also the welding point detection operation is carried out manually after welding, which is not only inefficient, but most of the detection is carried out by random sampling, so that the overall quality of the welding cannot be supported by accurate data.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A nut automatic projection welding device comprises a base and a projection welding device, wherein a circulating conveying frame capable of conveying a workpiece to a welding position of the projection welding device is installed on the surface of the base, and workpiece placement plates are distributed on the circulating conveying frame, a workpiece detection structure is installed on the surface of the base on one side of the projection welding device, and a welding point detection structure is installed on the surface of the base on the other side of the projection welding device.
[0006] As an optimal technical scheme of the utility model, a lifting cylinder is installed at the bottom end of the projection welding equipment, a lower sliding seat is installed on the surface of the lifting cylinder, a top plate is installed on the top of the projection welding equipment, the bottom end of the top plate is connected to the upper sliding seat through a downward pressure cylinder, guide plates are installed at the sides of the projection welding equipment corresponding to the positions of the upper sliding seat and the lower sliding seat, a lower electrode body is installed on the surface of the lower sliding seat, a lower electrode head is installed on the surface of the lower electrode body, a connecting square tube is installed at the bottom end of the upper sliding seat, a sleeve is sleeved on the outside of the connecting square tube, connecting holes are opened on the sleeve and the square tube, a limiting bolt is installed inside the connecting hole, an upper electrode body is installed at the bottom end of the sleeve, an upper electrode head is installed at the bottom end of the upper electrode body, an electric control box is installed on one side of the projection welding equipment, and a conveying gun body is installed on the other side of the projection welding equipment through a fixed frame, and the conveying gun body is connected to an external nut conveyor machine.
[0007] As a preferred technical solution of the utility model, a through hole is opened on the workpiece placing plate at the position of the nut, and lifting grooves are opened on the workpiece placing plate on both sides of the through hole, and U-shaped plates are installed at the positions of the lifting grooves corresponding to the bottom ends of the lower electrode head and the upper electrode head on both sides.
[0008] As a preferred technical solution of the utility model, the circulating conveyor frame includes a shaft system installed inside the top of the base, a main shaft is sleeved inside the shaft system, the bottom end of the main shaft is arranged inside the base and connected to a reducer, the input end of the reducer is connected to a servo motor, the top end of the main shaft is arranged above the base and connected to a mounting plate, a connecting plate for connecting a workpiece placement plate is distributed on the side of the mounting plate, a support rod is distributed at the bottom end of the mounting plate, a ball is rotatably installed inside the bottom end of the support rod, and a support ring is installed at the position of the ball corresponding to the surface of the base.
[0009] As a preferred technical solution of the utility model, the workpiece detection structure includes two L-shaped plates installed on the surface of the base, and a front CCD camera is installed on the L-shaped plate on the side close to the projection welding equipment, and a proximity switch is installed on the L-shaped plate on the other side, and a defective workpiece discharge port is arranged on the base between the front CCD camera and the projection welding equipment.
[0010] As a preferred technical solution of the utility model, the solder joint detection structure includes a support rod installed on the surface of the base, a fill light board is installed on the top of the support rod, three rear CCD cameras are distributed on the bottom of the fill light board, and a qualified part discharge port and an unqualified part discharge port are sequentially arranged on the base on the side of the solder joint detection structure.
[0011] As a preferred technical solution of the utility model, sliding holes are opened at the positions of the jacking grooves corresponding to the defective workpiece discharge port, the qualified workpiece discharge port and the unqualified workpiece discharge port, and a U-shaped top plate is installed at the positions of the sliding holes corresponding to the inside of the base, and the U-shaped top plate is connected to the inner wall of the base through an electric push rod.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: before welding, the workpiece detection structure can be used to detect the interface position of the workpiece welding, thereby ensuring the good performance of the workpiece welding point position during welding; and after welding, the welding point detection structure can be used to detect the condition of the welding point, thereby distinguishing defective products from qualified products, thereby achieving a census and ensuring the performance of the workpiece in the next process. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0014] Figure 2 It is a three-dimensional side structural schematic diagram of the utility model;
[0015] Figure 3 It is a schematic diagram of the first cross-sectional structure of the utility model;
[0016] Figure 4 It is a schematic diagram of the second cross-sectional structure of the utility model;
[0017] Figure 5 It is a partial enlarged view of the A1 end of the utility model;
[0018] Figure 6 It is a partial enlarged view of the A2 end of the utility model;
[0019] 1-base; 2-projection welding equipment; 3-conveying gun body; 4-circulating conveying rack; 5-workpiece placement plate; 6-workpiece detection structure; 7-welding point detection structure; 8-lifting slot; 9-U-shaped plate; 11-axis system; 12-spindle; 13-reducer; 14-servo motor; 15-mounting plate; 16-connecting plate; 17-through hole; 18-support ring; 19-support rod; 20-roller ball; 21-L-shaped plate; 22-proximity switch; 23-front CCD camera; 24-defective workpiece discharge port; 25-slide hole; 27- Lifting cylinder; 28-lower sliding seat; 29-guide plate; 30-lower electrode body; 31-lower electrode head; 32-upper sliding seat; 33-top plate; 34-downward pressure cylinder; 36-connecting square tube; 37-upper electrode body; 39-sleeve; 40-connecting hole; 41-limit bolt; 42-upper electrode head; 43-electric control box; 44-fixing bracket; 45-support rod; 46-fill light board; 47-rear CCD camera; 48-qualified parts discharge port; 49-unqualified parts discharge port; 50-U-shaped top plate; 51-electric push rod. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-6 , the utility model provides a technical solution:
[0022] A nut automatic projection welding device comprises a base 1 and a projection welding device 2, wherein a circulating conveyor frame 4 capable of conveying a workpiece to a welding position of the projection welding device 2 is installed on the surface of the base 1, and workpiece placement plates 5 are distributed on the circulating conveyor frame 4, and the workpiece placement plates 5 are evenly distributed on the side of the circulating conveyor frame 4, thereby enabling the circulating conveyor frame 4 to convey the workpiece to be welded to each workstation one by one, and the processing workstations are, in order, a loading station, a material detection station, a workpiece weld spot detection station, a defective workpiece discharge station, a welding station, a weld spot detection station, a qualified part discharge station, and an unqualified part discharge station, a workpiece detection structure 6 is installed on the surface of the base 1 on one side of the projection welding device 2, and a weld spot detection structure 7 is installed on the surface of the base 1 on the other side of the projection welding device 2.
[0023] A lifting cylinder 27 is installed at the bottom end of the projection welding device 2, and a lower sliding seat 28 is installed on the surface of the lifting cylinder 27. A top plate 33 is installed at the top of the projection welding device 2. The bottom end of the top plate 33 is connected to the upper sliding seat 32 through a downward pressure cylinder 34. Guide plates 29 are installed at the positions of the upper sliding seat 32 and the lower sliding seat 28 on the side of the projection welding device 2. A lower electrode body 30 is installed on the surface of the lower sliding seat 28. A lower electrode head 31 is installed on the surface of the lower electrode body 30. A connecting square tube 36 is installed at the bottom end of the upper sliding seat 32. A sleeve 39 is sleeved on the outside of the connecting square tube 36. The sleeve 39 and the square tube 36 are provided with connecting A connecting hole 40 is provided, and a limiting bolt 41 is installed inside the connecting hole 40. An upper electrode body 37 is installed at the bottom end of the sleeve 39, and an upper electrode head 42 is installed at the bottom end of the upper electrode body 37. An electric control box 43 is installed on one side of the projection welding device 2, and a conveying gun body 3 is installed on the other side of the projection welding device 2 through a fixing frame 44. The conveying gun body 3 is connected to an external nut conveyor machine, and the nuts are conveyed to the surface of the workpiece through the conveying gun body 3 in the nut conveyor machine, and then the lower electrode head 31 and the upper electrode head 42 are brought into contact with the workpiece and the nut through the working operation of the lifting cylinder 27 and the pressing cylinder 34, thereby performing welding operations.
[0024] A through hole 17 is provided on the workpiece placement plate 5 at the position of the nut, and lifting grooves 8 are provided on the workpiece placement plate 5 on both sides of the through hole 17. U-shaped plates 9 are installed at the positions of the lifting grooves 8 on both sides of the bottom ends of the lower electrode head 31 and the upper electrode head 42, so that during welding, the workpiece can be lifted up by the U-shaped plates 9 on both sides of the lower electrode head 31, and the workpiece can be pressed down by the U-shaped plates 9 on both sides of the upper electrode head 42, thereby ensuring that the workpiece is in a parallel state with the lower electrode head 31 and the upper electrode head 42, thereby ensuring the welding effect.
[0025] The circulating conveyor 4 includes a shaft system 11 installed inside the top of the base 1, a main shaft 12 is sleeved inside the shaft system 11, the bottom end of the main shaft 12 is arranged inside the base 1 and connected to a reducer 13, the input end of the reducer 13 is connected to a servo motor 14, the top end of the main shaft 12 is arranged above the base 1 and connected to a mounting plate 15, a connecting plate 16 for connecting the workpiece placement plate 5 is distributed on the side of the mounting plate 15, a support rod 19 is distributed at the bottom end of the mounting plate 15, a ball 20 is rollingly installed inside the bottom end of the support rod 19, a support ring 18 is installed at the position of the ball 20 on the surface of the base 1, and the servo motor 14 drives the mounting plate 15 to rotate under the transmission of the reducer 13 and the main shaft 12, thereby driving the workpiece placement plate 5 to pass through each station in turn.
[0026] The workpiece detection structure 6 includes two L-shaped plates 21 installed on the surface of the base 1, and a front CCD camera 23 is installed on the L-shaped plate 21 on one side close to the projection welding equipment 2, and a proximity switch 22 is installed on the L-shaped plate 21 on the other side. The proximity switch 22 is used to detect whether there is a workpiece on the workpiece placement plate 5, and the welding point of the workpiece is photographed by the front CCD camera 23. Before shooting, the workpiece that has passed the manual inspection is placed on the workpiece placement plate 5 and photographed by the front CCD camera 23, thereby collecting a standard picture, and comparing the picture taken during the inspection with the standard picture, thereby inspecting the workpiece. A defective workpiece discharge port 24 is provided on the base 1 between the front CCD camera 23 and the projection welding equipment 2, thereby facilitating the discharge of unqualified workpieces.
[0027] The welding spot detection structure 7 includes a support rod 45 installed on the surface of the base 1, a fill light plate 46 is installed on the top of the support rod 45, and three rear CCD cameras 47 are distributed on the bottom of the fill light plate 46. The base 1 on the side of the welding spot detection structure 7 is sequentially provided with a qualified part discharge port 48 and an unqualified part discharge port 49. The three rear CCD cameras 47 can take pictures of the whole picture of the welding point of the nut and the workpiece, and then compare it with the standard picture information entered in advance, so as to inspect the welding point.
[0028] Slide holes 25 are provided at the positions of the lifting grooves 8 corresponding to the inside of the defective workpiece discharge port 24, the qualified workpiece discharge port 48 and the unqualified workpiece discharge port 49, and a U-shaped top plate 50 is installed at the positions of the slide holes 25 inside the base 1. The U-shaped top plate 50 is connected to the inner wall of the base 1 through an electric push rod 51, so that the electric push rod 51 works, thereby driving the U-shaped top plate 50 to move upward, thereby lifting the workpiece through the lifting groove 8. The top end of the U-shaped top plate 50 is tilted, and the height of the side closer to the main shaft 12 is higher, thereby ensuring that the lifted workpiece can fall into the corresponding discharge port along the top inclined surface of the U-shaped top plate 50, thereby separating the welded material from the workpiece placement plate 5.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A nut automatic projection welding device, comprising a base (1) and a projection welding device (2), characterized in that: A circulating conveying frame (4) capable of conveying a workpiece to a welding position of a projection welding device (2) is installed on the surface of the base (1), and a workpiece placement plate (5) is distributed on the circulating conveying frame (4). A workpiece detection structure (6) is installed on the surface of the base (1) on one side of the projection welding device (2), and a welding point detection structure (7) is installed on the surface of the base (1) on the other side of the projection welding device (2).
2. The nut automatic projection welding equipment according to claim 1, characterized in that: A lifting cylinder (27) is installed at the bottom end of the projection welding device (2), and a lower sliding seat (28) is installed on the surface of the lifting cylinder (27). A top plate (33) is installed at the top end of the projection welding device (2), and the bottom end of the top plate (33) is connected to an upper sliding seat (32) via a downward pressure cylinder (34). Guide plates (29) are installed at the sides of the projection welding device (2) at positions corresponding to the upper sliding seat (32) and the lower sliding seat (28). A lower electrode body (30) is installed on the surface of the lower sliding seat (28), and a lower electrode head (31) is installed on the surface of the lower electrode body (30). The bottom of the upper sliding seat (32) is provided with a guide plate (29). A connecting square tube (36) is installed at the end, the connecting square tube (36) is sleeved with a sleeve (39) on the outside, the sleeve (39) and the square tube (36) are both provided with connecting holes (40), a limit bolt (41) is installed inside the connecting hole (40), an upper electrode body (37) is installed at the bottom end of the sleeve (39), an upper electrode head (42) is installed at the bottom end of the upper electrode body (37), an electric control box (43) is installed on one side of the projection welding device (2), and a conveying gun body (3) is installed on the other side of the projection welding device (2) via a fixing frame (44), and the conveying gun body (3) is connected to an external nut conveyor.
3. The nut automatic projection welding equipment according to claim 2, characterized in that: A through hole (17) is provided on the workpiece placement plate (5) at a position corresponding to the nut, lifting grooves (8) are provided on the workpiece placement plate (5) on both sides of the through hole (17), and U-shaped plates (9) are installed at positions corresponding to the lifting grooves (8) on both sides of the bottom ends of the lower electrode head (31) and the upper electrode head (42).
4. The automatic projection welding equipment for nuts according to claim 1, characterized in that: The circulating conveyor frame (4) comprises a shaft system (11) installed inside the top of the base (1), a main shaft (12) is sleeved inside the shaft system (11), the bottom end of the main shaft (12) is arranged inside the base (1) and connected to a reducer (13), the input end of the reducer (13) is connected to a servo motor (14), the top end of the main shaft (12) is arranged above the base (1) and connected to a mounting plate (15), a connecting plate (16) for connecting a workpiece placement plate (5) is distributed on the side of the mounting plate (15), a support rod (19) is distributed at the bottom end of the mounting plate (15), a ball (20) is rotatably installed inside the bottom end of the support rod (19), and a support ring (18) is installed at the position of the ball (20) on the surface of the base (1).
5. The nut automatic projection welding equipment according to claim 1, characterized in that: The workpiece detection structure (6) comprises two L-shaped plates (21) mounted on the surface of the base (1), wherein a front CCD camera (23) is mounted on the L-shaped plate (21) on the side close to the projection welding device (2), and a proximity switch (22) is mounted on the L-shaped plate (21) on the other side, and a defective workpiece discharge port (24) is provided on the base (1) between the front CCD camera (23) and the projection welding device (2).
6. The automatic projection welding equipment for nuts according to claim 1, characterized in that: The solder joint detection structure (7) comprises a support rod (45) mounted on the surface of a base (1), a fill light plate (46) being mounted on the top end of the support rod (45), three rear CCD cameras (47) being distributed on the bottom end of the fill light plate (46), and a qualified part discharge port (48) and a failed part discharge port (49) being sequentially arranged on the base (1) at the side of the solder joint detection structure (7).
7. The automatic projection welding equipment for nuts according to claim 5, characterized in that: Slide holes (25) are provided at positions corresponding to the lifting grooves (8) inside the defective workpiece discharge port (24), the qualified workpiece discharge port (48) and the unqualified workpiece discharge port (49), and a U-shaped top plate (50) is installed at positions corresponding to the slide holes (25) inside the base (1), and the U-shaped top plate (50) is connected to the inner wall of the base (1) via an electric push rod (51).