A welding apparatus and workpiece clamping device therefor

Abstract

The application discloses a welding device and a workpiece clamping device thereof. The workpiece clamping device comprises a mounting seat, a clamp body and an adjusting mechanism. The clamp body is arranged on the mounting seat and comprises a bottom plate. The bottom plate is provided with mounting positions for accommodating large pieces and small pieces. The adjusting mechanism comprises a side pushing assembly, a first fine adjustment assembly and a second fine adjustment assembly. The first fine adjustment assembly and the second fine adjustment assembly are arranged on the bottom plate and located on the two sides of the mounting positions. The first fine adjustment assembly is used for pressing the small pieces. The second fine adjustment assembly is slidingly arranged on the bottom plate. The side pushing assembly has a side pushing inclined surface. The side pushing assembly is movably inserted into the mounting seat and pushes the second fine adjustment assembly to move through the side pushing inclined surface to press the large pieces, so that the large pieces are seamlessly attached to the small pieces, and the small pieces are further pressed against the first fine adjustment assembly. The application has the effect of improving the precise attachment of the large pieces and the small pieces, facilitating the subsequent precise welding of the large pieces and the small pieces, and further improving the product quality.

Description

Technical Field

[0001] This application relates to the technical field of laser welding, and more specifically, to a welding device and a workpiece clamping device thereof. Background Technology

[0002] Welding is a common processing method used in product manufacturing. In the industrial manufacturing field, large parts are usually produced as semi-finished products after hot forging, while small parts are usually produced by metal injection molding or 3D printing. Due to the characteristics of the materials used in large parts and their complex molding processes, significant dimensional deviations and deformation problems are easily caused, resulting in inadequate fit and gaps between small and large parts. After welding, bubbles or cracks may appear, affecting product quality. Utility Model Content

[0003] This application provides a welding equipment and a workpiece clamping device thereof, which can improve the welding accuracy of large and small parts, thereby improving product quality.

[0004] Firstly, the workpiece clamping device provided in this application adopts the following technical solution:

[0005] A workpiece clamping device, comprising:

[0006] Mounting base;

[0007] A clamp body is disposed on the mounting base. The clamp body includes a base plate, and the base plate is provided with a mounting position for accommodating large and small parts.

[0008] The adjustment mechanism includes a side-push component, a first fine-tuning component, and a second fine-tuning component. The first fine-tuning component and the second fine-tuning component are disposed on the base plate and located on both sides of the mounting position. The first fine-tuning component is used to press against the small part, and the second fine-tuning component is slidably disposed on the base plate. The side-push component has a side-push inclined surface. The side-push component is movably inserted into the mounting base and pushes the second fine-tuning component to move by the side-push inclined surface to press against the large part, so that the large part fits seamlessly with the small part, and further causes the small part to abut against the first fine-tuning component.

[0009] Optionally, the first fine-tuning component includes a first fixed base and a first pressing block. The first fixed base is rotatably connected to the base plate via a first left-right rotation axis, and the first pressing block is rotatably connected to the first fixed base via a first up-down rotation axis to movably press against the small part.

[0010] Optionally, the clamp body includes:

[0011] Positioning plate;

[0012] A positioning block is disposed at a distance from the positioning plate within the mounting position to respectively position one end of the large component and the small component along the length direction;

[0013] A connecting plate is provided on the base plate;

[0014] A first elastic push block, one end of which is connected to the connecting plate, and the other end of which is spaced apart from the positioning plate at both ends of the large component;

[0015] The second elastic push block is disposed at a distance from the positioning block on both ends of the small part;

[0016] The first link has one end connected to the first elastic push block at a distance via a connecting plate, and the other end connected perpendicularly to the second elastic push block.

[0017] A cam handle is rotatably mounted on the connecting plate. The cam handle drives the connecting plate to move the first connecting rod and the first elastic push block synchronously along the Y-axis direction, so that the first elastic push block pushes the large part to the positioning plate and, in conjunction with the second elastic push block, pushes the small part to the positioning block to achieve the positioning of the large part and the small part in the Y-axis direction.

[0018] Optionally, the clamp body further includes a second connecting rod, which is spaced apart from the first connecting rod on the connecting plate. The second connecting rod has an clearance hole, and the inner wall of the clearance hole is provided with a guide slope.

[0019] The second fine-tuning component includes multiple side-push sliders, guide posts, and reset components. One end of the guide post is located in the clearance hole. The reset component is inserted into the side-push slider, and one end of the reset component is connected to the base plate via a connecting post. The cam handle drives the connecting plate to move and simultaneously drives the second connecting rod to move, causing the guide post to move the side-push slider away from the large component along the guide slope and compress the reset component. Alternatively, the side-push slider, under the rebound force of the reset component, moves along the guide slope toward the large component to push the large component and the small component against the first fine-tuning component, thereby achieving the positioning of the large component and the small component in the X-axis direction.

[0020] Optionally, the side-pushing ramp includes a first ramp and a second ramp that slide against each other, and the side-pushing assembly includes:

[0021] A side push block, wherein the first inclined surface is formed on the side push block;

[0022] The support has a movable hole, and the second inclined surface is formed in the movable hole;

[0023] The second fixed seat is rotatably mounted on the bearing seat;

[0024] The second pressing block is rotatably mounted on the second fixed seat;

[0025] The first driving member has one end fixed to the mounting base and the other end connected to the side push block to drive the side push block to be inserted into the mounting base and the bearing base in sequence, so that the first inclined surface and the second inclined surface slide against the second fixed base, thereby linking the second pressing block to move toward the side push slider to press against the side push slider, so that the side push slider pushes against the large part and links to push the small part to the first fine adjustment component.

[0026] Optionally, the clamp body further includes a cover plate and multiple sets of limiting components. The cover plate is disposed on the side of the base plate away from the mounting seat, and the multiple sets of limiting components are spaced apart on the cover plate. The limiting component includes a first elastic element and a limiting post. One end of the first elastic element is disposed on the cover plate, and the other end is sleeved on the limiting post so that the limiting post elastically presses against the large part or the small part.

[0027] Optionally, the side push slider is provided with a locking groove, and the clamp body further includes multiple self-locking components; the self-locking component includes a self-locking post and a second elastic member, one end of the second elastic member is connected to the cover plate, and the other end is sleeved on the self-locking post, and the self-locking post is movably inserted into the locking groove to restrict the movement of the side push slider.

[0028] Optionally, the fixture body also has a welding through hole corresponding to the welding position; the workpiece clamping device further includes a backlight mechanism, the backlight mechanism includes a light source, a light shield and a second driving member, the light source is set corresponding to the welding through hole to detect gaps at the joint between the large part and the small part, the light shield is set at the output end of the second driving member, the second driving member is set on the mounting base, and the second driving member drives the light shield to move closer to the light source to block the light source, or drives the light shield to move away from the light source to release the blocking of the light source.

[0029] Optionally, the workpiece clamping device further includes an air blowing mechanism, which includes an air nozzle for communicating with an external air supply device;

[0030] At least one of the cover plate and the base plate is provided with an air inlet, which corresponds to and is connected to the air nozzle; the clamp body is provided with an air passage around the mounting position, the air passage has an air inlet end and an air outlet end, the air inlet end is connected to the air inlet, and the air outlet end is connected to the welding through hole.

[0031] Secondly, the welding equipment provided in this application adopts the following technical solution:

[0032] A welding device includes a welding head and the aforementioned workpiece clamping device, wherein the welding head is disposed above the workpiece clamping device and is used to weld the small part to the large part.

[0033] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0034] The large and small components are placed in the mounting position. Under the pressure of the first fine-tuning component, the small component moves closer to and presses against the large component. The side-push component is inserted into the mounting base and moves towards the large component by pushing the second fine-tuning component through the side-push inclined surface until the second fine-tuning component presses against the large component. At this time, the large component moves closer to and presses against the small component under the force of the second fine-tuning component, further causing the small component to press against the first fine-tuning component. Under the action of the first and second fine-tuning components, the large and small components press against each other, thereby correcting the reference surface of the large component. This gradually increases the contact area between the large and small components, achieving a seamless fit between them. This facilitates precise welding of the large and small components in the future, thereby improving product quality. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0036] Figure 1 This is a schematic diagram of the overall structure of a workpiece clamping device disclosed in an embodiment of this application;

[0037] Figure 2 This is a cross-sectional view of a workpiece clamping device disclosed in an embodiment of this application;

[0038] Figure 3 This is a schematic diagram of the workpiece clamping device disclosed in an embodiment of this application, highlighting the fixture body.

[0039] Figure 4 This is a schematic diagram showing the structure of the bottom plate and positioning components in the fixture body of a workpiece clamping device disclosed in an embodiment of this application;

[0040] Figure 5 This is an enlarged schematic diagram of the positioning component in the fixture body of a workpiece clamping device disclosed in an embodiment of this application;

[0041] Figure 6 This is a schematic diagram of the structure of the cover plate in the fixture body of a workpiece clamping device disclosed in an embodiment of this application;

[0042] Figure 7This is a schematic diagram of the structure of the adjustment mechanism of a workpiece clamping device disclosed in an embodiment of this application;

[0043] Figure 8 For is Figure 7 A magnified view of a portion at point A;

[0044] Figure 9 This is a cross-sectional view of the structure of a workpiece clamping device with a prominent self-locking component, as disclosed in an embodiment of this application.

[0045] Figure 10 This is a schematic diagram of the structure of a backlight mechanism in a workpiece clamping device disclosed in an embodiment of this application;

[0046] Figure 11 This is a schematic diagram of the air blowing mechanism of a workpiece clamping device disclosed in an embodiment of this application;

[0047] Figure 12 This is a schematic diagram of the air passage in the fixture body of a workpiece clamping device disclosed in an embodiment of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Mounting bracket; 11. Mounting bracket; 12. Base; 13. Fixing block;

[0050] 2. Fixture body; 21. Base plate; 211. Mounting position; 212. Welding through hole; 213. Positioning plate; 214. Positioning block; 22. Cover plate; 221. Limiting component; 2211. First elastic element; 2212. Limiting post; 222. Self-locking component; 2221. Self-locking post; 2222. Second elastic element; 23. Positioning component; 231. Connecting plate; 232. First connecting rod; 233. First elastic push block; 234. Second elastic push block; 235. Cam handle; 236. Second connecting rod; 24. Pressing component; 241. First pressure rod; 242. Second pressure rod; 2421. Cam part; 243. Rotating shaft; 25. Air inlet; 26. Air passage; 261. Air inlet end; 262. Air outlet end;

[0051] 3. Adjustment mechanism; 31. First fine-tuning component; 311. First fixed seat; 312. First pressing block; 313. First left-right rotation axis; 314. First up-down rotation axis; 32. Second fine-tuning component; 321. Side push slider; 3211. Locking groove; 322. Guide post; 323. Reset component; 324. Connecting post; 33. Side push component; 331. First driving component; 332. Bearing seat; 333. Second fixed seat; 334. Second pressing block; 335. Side push block; 336. Second left-right rotation axis; 337. Second up-down rotation axis;

[0052] 4. Backlight mechanism; 41. Light source; 42. Light shield; 43. Second drive component;

[0053] 5. Air blowing mechanism; 51. Air nozzle; 52. Third drive component; 53. Support arm;

[0054] 6. Large items; 7. Small items. Detailed Implementation

[0055] The present application will be further described in detail below with reference to the accompanying drawings.

[0056] This application provides a workpiece clamping device that can improve the welding accuracy of parts of different sizes, thereby improving product quality.

[0057] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the present application.

[0058] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0059] Please see Figure 1 and Figure 2This is one embodiment of the workpiece clamping device in this application. The workpiece clamping device includes a mounting base 1, a clamp body 2, an adjustment mechanism 3, a backlight mechanism 4, and an air blowing mechanism 5. The clamp body 2 is detachably mounted on the mounting base 1 and is used to clamp a large part 6 and a small part 7 for subsequent welding. The adjustment mechanism 3 is used to fine-tune the large part 6 and the small part 7 so that they can fit together seamlessly, aiming to improve the welding quality of the large and small parts. The backlight mechanism 4 is disposed on the mounting base 1 and has a gap between it and the clamp body 2. The backlight mechanism 4 can detect the gap condition at the fitting point between the large part 6 and the small part 7. If the fitting point between the large part 6 and the small part 7 is abnormal, it can be detected in time and adjusted using the adjustment mechanism 3. The air blowing mechanism 5 is disposed on the mounting base 1 and is used to create an isolation environment around the large part 6 and the small part 7 during welding, aiming to improve the strength of the weld.

[0060] The fixture body 2 has a welding through hole 212. The mounting base assembly 1 includes a mounting base 11 and a base 12 arranged parallel to each other at intervals. The base 12 supports the backlight mechanism 4. The fixture body 2 is detachably mounted on the mounting base 11. The mounting base 11 is provided with four fixing blocks 13. The four fixing blocks 13 enclose a square area to position the fixture body 2. The backlight mechanism 4 is fixedly mounted on the base 12. In order to facilitate the light emitted by the backlight mechanism 4 to reach the fixture body 2 to detect the fit of the large part 6 and the small part 7, the mounting base 11 has a clearance area corresponding to the welding through hole 212. The light emitted by the backlight mechanism 4 passes through the clearance area and the welding through hole 212 to illuminate the fit of the large and small parts.

[0061] Please see Figures 3 to 6 The clamp body 2 includes a base plate 21, a cover plate 22, a positioning component 23, and two pressing components 24. The base plate 21 is used to support the stacked large parts 6 and small parts 7. The cover plate 22 covers the large parts 6 and small parts 7 on the base plate 21. The two pressing components 24 are hinged to both sides of the base plate 21 and are used to press the cover plate 22 against the base plate 21 to clamp the large parts 6 and small parts 7 between the base plate 21 and the cover plate 22, and to lock the base plate 21 and the cover plate 22 into one piece, which is convenient for disassembly and installation onto the mounting base 11. The positioning component 23 is used to pre-position the large parts 6 and small parts 7 before the cover plate 22 is closed, to prevent the large parts 6 and small parts 7 from frequently shifting when they are on the base plate 21, and at the same time to prepare for the subsequent adjustment mechanism 3 to adjust the large parts 6 and small parts 7.

[0062] Please see Figure 3In one embodiment, the pressing assembly 24 includes a first pressing rod 241, a second pressing rod 242, and a rotating shaft 243. The first pressing rod 241 is vertically arranged and fixedly connected to the base plate 21. The second pressing rod 242 is hinged to the first pressing rod 241 via the rotating shaft 243. The second pressing rod 242 is provided with a cam portion 2421, which has an arc shape. By rotating the second pressing rod 242, the cam portion 2421 changes its radius of rotation to achieve the locking or unlocking effect on the cover plate 22 and the base plate 21.

[0063] Please see Figure 2 and Figure 4 In this embodiment, the X-axis direction is the length direction of the mounting base 11, the Y-axis direction is the width direction of the mounting base 11, and the Z-axis direction is the height direction of the mounting base 11. For ease of understanding, the large component 6 and the small component 7 are described first. The length direction of both the large component 6 and the small component 7 is set along the Y-axis direction. The two opposite sides of the large component 6 are the inner surface and the back surface, respectively. The back surface of the large component 6 is supported by the second fine-tuning component 32 (described below). The inner surface of the large component 6 is processed to remove part of the central area, forming a structure with an opening on one side. The inner surface of the side opening is defined as the reference surface. The small component 7 is plate-shaped. The two opposite sides of the small component 7 are the inner surface and the back surface, respectively. The inner surface of the small component 7 is supported by the first fine-tuning component 31 (described below). The back surface of the small component 7 is defined as the welding surface. The small part 7 is attached to the large part 6 by the first fine-tuning component 31 and the second fine-tuning component 32, so that the welding surface of the small part 7 is in contact with the reference surface of the large part 6. After the large part 6 and the small part 7 are in contact, the laser equipment is used to weld the contact point of the reference surface and the welding surface, that is, to weld the reference surface and the welding surface into one, thereby realizing the welding of the large part 6 and the small part 7 into one.

[0064] Please see Figure 2 and Figure 4 Specifically, the base plate 21 has a mounting position 211 on its front side and a welding through hole 212 on its back side. The mounting position 211 is used to accommodate the large part 6 and the small part 7, and the mounting position 211 and the welding through hole 212 are correspondingly arranged. The arrangement of the welding through hole 212 facilitates the laser to directly reach the mounting position 211 during welding, thereby welding the mating area of ​​the large part 6 and the small part 7, achieving the welding of the large part 6 and the small part 7. In one embodiment, the welding through hole 212 may also be provided only on the cover plate 22. In another embodiment, both the base plate 21 and the cover plate 22 may be provided with welding through holes 212, with the central axis of the welding through hole 212 on the base plate 21 coinciding with the central axis of the welding through hole 212 on the cover plate 22, facilitating laser welding of the mating area of ​​the large part 6 and the small part 7 and improving the welding effect.

[0065] Please see Figure 4 and Figure 5The positioning component 23 includes a positioning module and a side-push module. The positioning module includes a positioning plate 213 and a positioning block 214. The positioning plate 213 and the positioning block 214 are spaced apart within the mounting position 211 to position one end of the large component 6 and the small component 7 along the length direction, respectively. The side-push module is used to push the other end of the large component 6 and the small component 7 along the length direction so that the large component 6 and the small component 7 abut against the positioning plate 213 and the positioning block 214, respectively.

[0066] Specifically, the side-push module includes a connecting plate 231, a first connecting rod 232, a first elastic push block 233, a second elastic push block 234, and a cam handle 235. The connecting plate 231 is located on the base plate 21. One end of the first elastic push block 233 is connected to the connecting plate 231, and the other end is spaced apart from the positioning plate 213 at both ends of the large component 6. The second elastic push block 234 and the positioning block 214 are spaced apart at both ends of the small component 7. The first connecting rod 232 is L-shaped, with one end connected to the first elastic push block 233 at a distance from the connecting plate 231, and the other end perpendicularly connected to the second elastic push block 234. The cam handle 235 is rotatably mounted on the connecting plate 231 to drive the connecting plate 231 to move synchronously with the first elastic push block 233 and the first connecting rod 232 along the Y-axis. This allows the first elastic push block 233 to push the large part 6 tightly to the positioning plate 213 and drive the first connecting rod 232 to simultaneously push the small part 7 to the positioning block 214 in conjunction with the second elastic push block 234. This achieves the positioning of the large part 6 and the small part 7 in the Y-axis direction, or releases the positioning of the large part 6 and the small part 7 in the Y-axis direction.

[0067] In this embodiment, the cam handle 235 is used to convert its own rotational motion into the linear motion of the connecting plate 231. The cam handle 235 has a "loose" side and a "tight" side. When the cam handle 235 is rotated so that its end moves away from the large component 6, the cam handle 235 is in the "loose" side state. When the cam handle 235 is rotated so that its end moves closer to the large component 6, the cam handle 235 is in the "tight" side state. When the cam handle 235 is in the "loose" side, the rotation of the cam handle 235 causes the connecting plate 231 to move away from the large component 6 along the Y-axis direction. When the cam handle 235 is in the "tight" side, the rotation of the cam handle 235 causes the connecting plate 231 to move closer to the large component 6 along the Y-axis direction. The movement of the connecting plate 231 synchronously drives the first connecting rod 232 and the first elastic push block 233 to move.

[0068] Understandably, when the cam handle 235 is rotated to the "tight" side, it causes the connecting plate 231 to move along the Y-axis. The cam handle 235 then moves the connecting plate 231 closer to the large component 6 along the Y-axis. Simultaneously, the movement of the connecting plate 231 drives the first connecting rod 232 and the first elastic push block 233 to move along the Y-axis. Under the influence of the connecting plate 231, the first elastic push block 233 gradually moves closer to the end of the large component 6, thus pressing against one end of the large component 6 to push the other end of the large component 6 tightly against the positioning plate 213. The elastic push block 233 and the positioning plate 213 cooperate to press against both ends of the large component 6, thereby achieving pre-positioning of the large component 6. Driven by the connecting plate 231, the first connecting rod 232 drives the second elastic push block 234 to move synchronously along the Y-axis. The second elastic push block 234 gradually moves closer to one end of the small component 7, pressing against one end of the small component 7 to push the other end of the small component 7 tightly against the positioning block 214. The second elastic push block 234 and the positioning block 214 cooperate to press against both ends of the small component 7, thereby achieving pre-positioning of the small component 7. Rotating the operating cam handle 235 to the "loose" side causes the cam handle 235 to drive the connecting plate 231 away from the large component 6 along the Y-axis, which in turn drives the first elastic push block 233 away from the large component 6 and the second elastic push block 234 away from the small component 7, thus achieving positioning of the large component 6 and the small component 7, making it easy to remove the welded components.

[0069] Please continue reading. Figure 4 Furthermore, to improve the welding efficiency of large parts 6 and small parts 7, the base plate 21 can simultaneously accommodate two sets of large parts 6 and small parts 7, enabling the welding fixture to weld two sets of large parts 6 and small parts 7 simultaneously. Specifically, the two sets of large parts 6 and two sets of small parts 7 are arranged in a mirror-symmetrical manner along the central axis of the width direction of the base plate 21. The positioning plate 213 is located at the center of the base plate 21. Two sets of positioning blocks 214 and positioning components 23 are provided, with the two sets of positioning blocks 214 arranged in a centrally symmetrical manner along the central axis of the width direction of the base plate 21, and the two sets of positioning components 23 arranged in a centrally symmetrical manner along the central axis of the width direction of the base plate 21. The positioning components 23 corresponding to each set of large and small parts are operated to achieve the positioning of the large and small parts.

[0070] Please continue reading. Figure 6 and Figure 9The clamp body 2 also includes multiple sets of limiting components 221 disposed on the spacer cover plate 22. The multiple sets of limiting components 221 are respectively disposed for the large part 6 and the small part 7. The limiting component 221 includes a first elastic element 2211 and a limiting post 2212. One end of the first elastic element 2211 is disposed on the cover plate 22, and the other end is sleeved on the limiting post 2212 so that the limiting post 2212 elastically presses against the large part 6 or the small part 7. Understandably, the cover plate 22 is provided with a through hole for accommodating the first elastic element 2211 and the limiting post 2212. One end of the first elastic element 2211 is located in the through hole and is fixedly connected to the cover plate 22, while the other end is fixedly connected to the limiting post 2212. When the cover plate 22 is closed onto the bottom plate 21, the limiting post 2212 preferentially contacts the large component 6 and the small component 7, thereby pressing against the limiting post 2212 to compress the first elastic element 2211. Under the action of the first elastic element 2211 and the limiting post 2212, the large component 6 and the small component 7 are positioned along the Z-axis, further enhancing their stability. The provision of the first elastic element 2211 alleviates the rigid contact of the limiting post 2212 with the large component 6 and the small component 7, thus ensuring the positioning of the large component 6 and the small component 7 while reducing damage to them when the cover plate 22 is closed onto the bottom plate 21.

[0071] Please see Figure 2 and Figure 7The adjustment mechanism 3 is used to adjust the large component 6 and the small component 7 along the X-axis. In this embodiment, the adjustment mechanism 3 is provided in two sets to adjust the two sets of large and small components respectively, thereby improving the welding efficiency of the large and small components. Specifically, the adjustment mechanism 3 includes a first fine-tuning component 31, a second fine-tuning component 32, and a side-push component 33. The first fine-tuning component 31 and the second fine-tuning component 32 are located on both sides of the mounting position 211 and are arranged opposite to each other. The first fine-tuning component 31 is used to press against the small component 7, the second fine-tuning component 32 is slidably mounted on the base plate 21, and the side-push component 33 has a side-push inclined surface 3500. It is movably inserted into the mounting base 11 and pushes the second fine-tuning component 32 along the X-axis by the side-push inclined surface 3500 to press against the back of the large component 6, so that the reference surface of the large component 6 is pushed to fit seamlessly against the welding surface of the small component 7, and further so that the inner surface of the small component 7 abuts against the first fine-tuning component 31, thereby achieving the positioning of the large component 6 and the small component 7 in the X-axis direction. Understandably, when the large component 6 and the small component 7 are installed in the mounting position 211, the small component 7 moves closer to and presses against the large component 6 under the pressure of the first fine-tuning component 31. When the side push component 33 moves upward along the Z direction, it pushes the second fine-tuning component 32 towards the large component 6 through its inclined side 3500. The second fine-tuning component 32 presses against the large component 6, causing the large component 6 to move closer to and press against the small component 7. The second fine-tuning component 32 provides a force to the large component 6. Under the mutual pressing force between the second fine-tuning component 32 and the small component 7, the reference surface of the large component 6 is corrected, thereby achieving fine-tuning of the reference surface of the large component 6. This gradually increases the contact area between the large component 6 and the small component 7, achieving seamless bonding between the large component 6 and the small component 7, thereby improving the welding effect of the large component 6 and the small component 7, and thus improving product quality.

[0072] Please see Figure 7 and Figure 8In one embodiment, the first fine-tuning component 31 includes a first fixed base 311 and a first pressing block 312. The first pressing block 312 presses against the small part 7 along the X-axis. The end face of the first pressing block 312 facing the small part 7 is provided with two pressing protrusions, which are arranged along the Y-axis to apply a more balanced force to the small part 7. The first fixed base 311 is connected to the base plate 21 through a first left-right rotation axis 313. Under the action of the first left-right rotation axis 313, the first fixed base 311 can adaptively rotate left and right around the first left-right rotation axis 313. Optionally, the left and right limit swing angle of the first fixed base 311 is ±0.8°, and the left and right fine-tuning range is ±0.21mm, so that the length direction of the small part 7 can be adaptively adjusted, changing the lateral angle of the small part 7 relative to the large part 6, so that the small part 7 can fit more closely to the large part 6 along the Y-axis. The first pressing block 312 and the first fixed seat 311 are connected by a first vertical rotation shaft 314. The length direction of the first vertical rotation shaft 314 is parallel to the Y-axis. Under the action of the first vertical rotation shaft 314, the first pressing block 312 can adaptively rotate up and down around the first vertical rotation shaft 314. Optionally, the left and right limit sway angle of the first pressing block 312 is ±1.6°, and the fine adjustment range is ±0.05mm, thereby adjusting the inclination of the small part 7 in the vertical plane and correcting the vertical tilt angle of the small part 7, so that the small part 7 can fit more closely to the large part 6 along the Z-axis direction. Through the first fixed seat 311 and the first pressing block 312, the small part 7 can be flexibly clamped and adaptively adjusted according to its shape, which helps to compensate for the unevenness of the surface of the small part 7 caused by manufacturing tolerances or assembly errors.

[0073] Please see Figure 5 The second fine-tuning assembly 32 includes multiple side-push sliders 321, guide posts 322, and a reset member 323. At least two side-push sliders 321 are stacked and used to push the back of the larger component 6 along the X-axis to press the larger component 6 tightly against the smaller component 7. The reset member 323 is inserted into the side-push slider 321, and one end of the reset member 323 is connected to the base plate 21 via a connecting post 324 for resetting the side-push slider 321. The reset member 323 may be a spring. The positioning component 23 also includes a second link 236, which is spaced apart from the first link 232 on the connecting plate 231. The second link 236 has a clearance hole, and the inner wall of the clearance hole is provided with a guide slope. One end of the guide post 322 is located in the clearance hole. The cam handle 235 drives the connecting plate 231 to move and simultaneously drives the second link 236 to move, so that the guide post 322 drives the side push slider 321 away from the large part 6 along the guide slope and compresses the reset part 323, or causes the side push slider 321 to move towards the large part 6 along the guide slope under the rebound force of the reset part 323, so as to push the large part 6 and the small part 7 to the first fine adjustment component 31, so as to realize the positioning of the large part 6 and the small part 7 in the X-axis direction.

[0074] Understandably, when the cam handle 235 is rotated to the "loose" side, the cam handle 235 causes the connecting plate 231 to move away from the large component 6 along the Y-axis. The connecting plate 231 drives the first connecting rod 232 and the second connecting rod 236 to move synchronously. The first elastic push block 233 and the second elastic push block 234 release the pre-positioning of the large component 6 and the small component 7. At the same time, the movement of the second connecting rod 236 causes the guide post 322 to move along the guide slope. Since one end of the guide slope is inclined away from the large component 6, the guide post 322 drives the side push slider 321 to gradually move away from the large component 6, thereby releasing the side push slider 321 from the large component 6. The pressure releases the positioning of the large part 6 and the small part 7, making it easier to remove the welded parts. The cam handle 235 is rotated to the "tight" side, causing the cam handle 235 to drive the connecting plate 231 to move closer to the large part 6 along the Y-axis. The connecting plate 231 drives the first connecting rod 232 and the second connecting rod 236 to move synchronously. The first elastic push block 233 and the second elastic push block 234 achieve the pre-positioning of the large part 6 and the small part 7. At the same time, the movement of the second connecting rod 236 causes the side push slider 321 to move towards the large part 6 and reset along the guide slope under the rebound force of the reset member 323, thus achieving the positioning of the large part 6 and the small part 7 along the X-axis.

[0075] There can be four side push sliders 321, which are arranged in a 2×2 configuration. Under the action of the side push assembly 33, the four side push sliders 321 can distribute the force to the force-bearing position of the large component 6 according to the deformation of the large component 6, thereby making adaptive adjustments.

[0076] Please continue reading. Figure 2 , Figure 7 and Figure 8The aforementioned side-push inclined surface 3500 includes a first inclined surface 3501 and a second inclined surface 3502 that slide against each other. The side-push assembly 33 includes a first driving member 331, a support seat 332, a second fixed seat 333, a plurality of second pressing blocks 334, and a side-push block 335. The second fixed seat 333 is rotatably mounted on the support seat 332 in the horizontal direction. The plurality of second pressing blocks 334 are correspondingly mounted to the plurality of side-push sliders 321, and the plurality of second pressing blocks 334 are rotatably mounted on the second fixed seat 333. The first inclined surface 3501 forms one end of the side-push block 335. The support seat 332 has a movable hole, and the second inclined surface 3502 is formed on one side wall of the movable hole. One end of the first driving component 331 is fixed to the base 12, and the other end is connected to the side push block 335. It drives the side push block 335 to sequentially insert into the mounting base 11 and the bearing base 332, so that the first inclined surface 3501 and the second inclined surface 3502 slide against the second fixed base 333, thereby linking the second pressing block 334 to move towards the side push slider 321 to press against the side push slider 321. Optionally, a gap of 0.3-0.5mm is preset between the second fixed base 333 and the second pressing block 334. The second pressing block 334 presses against the push slider 321 along the X-axis so that the push slider 321 pushes against the back of the large component 6. There can be two second pressing blocks 334. Each second pressing block 334 can have two pressing protrusions on its end face facing the side push slider 321. The four pressing protrusions correspond one-to-one with the side push slider 321, aiming to apply force to the corresponding side push slider 321 to precisely adjust the reference surface of the large component 6. The second fixed seat 333 is connected to the bearing seat 332 via a second left-right rotation axis 336. Under the action of the second left-right rotation axis 336, the second fixed seat 333 can rotate left and right around the second left-right rotation axis 336. Optionally, the left-right limit swing angle of the second fixed seat 333 can be ±1.2°, and the left-right fine adjustment range is ±0.3mm, so that the length direction of the large part 6 can be adaptively adjusted, so that the large part 6 can fit more closely to the small part 7 along the Y-axis direction. The second pressing block 334 is connected to the second fixed seat 333 via a second up-down rotation axis 337. The length direction of the second up-down rotation axis 337 is parallel to the Y-axis direction. Under the action of the second up-down rotation axis 337, the second pressing block 334 can rotate up and down around the second up-down rotation axis 337. Optionally, the up-down limit swing angle of the second pressing block 334 is ±1.6°, and the fine adjustment range is ±0.3mm, so that the large part 6 can fit more closely to the small part 7 along the Z-axis direction.

[0077] Please see Figure 9To ensure that the large component 6 and the small component 7 remain in a fitted state after adjustment, the side-push slider 321 is provided with a locking groove 3211. The fixture body 2 also includes multiple self-locking components 222, each corresponding to one of the side-push sliders 321. The self-locking component 222 includes a self-locking post 2221 and a second elastic element 2222. One end of the second elastic element 2222 is connected to the cover plate 22, and the other end is sleeved on the self-locking post 2221. The self-locking post 2221 is movably inserted into the locking groove 3211 to restrict the movement of the side-push slider 321. Understandably, when the locking groove 3211 on the side push slider 321 is not aligned with the self-locking post 2221, the self-locking post 2221 compresses the second elastic element 2222 under the restriction of the side push slider 321. The side push assembly 33 pushes the second fine adjustment assembly 32 to adjust and flatten the back of the large part 6. When the side push assembly 33 pushes the second fine adjustment assembly 32 until the side push slider 321 moves the locking groove 3211 to directly below the self-locking post 2221, the large part 6 and the small part 7 are completely fitted together. At this time, under the downward pressure of the cover plate 22, the self-locking post 2221 moves towards the locking groove 3211 in conjunction with the second elastic element 2222. The self-locking post 2221 inserts into the locking groove 3211 to restrict the movement of the side push slider 321, thereby achieving real-time self-locking.

[0078] Please see Figure 10 The backlight mechanism 4 includes a light source 41, a light shield 42, and a second driving member 43. The light source 41 is set corresponding to the welding through hole 212 to detect gaps at the joint between the large part 6 and the small part 7. The light shield 42 is set at the output end of the second driving member 43. The second driving member 43 is set on the base 11, and the second driving member 43 drives the light shield 42 to move closer to the light source 41 to block the light source 41, or drives the light shield 42 to move away from the light source 41 to release the blockage of the light source 41.

[0079] In one embodiment, two sets of light-shielding plates 42 and second driving members 43 are provided, with the two sets of light-shielding plates 42 and second driving members 43 respectively located on both sides of the light source 41. The second driving member 43 drives the correspondingly provided light-shielding plates 42 to move. The two light-shielding plates 42 move towards each other to block the light source 41, and the two light-shielding plates 42 move away from each other to release the blockage of the light source 41. It can be understood that after the fixture body 2 is positioned and clamped, the second driving member 43 drives the light-shielding plates 42 to move away from the light source 41 to open the light-shielding plates 42. The light source 41 passes through the welding through hole 212 of the base plate 21 and shines directly into the gap at the joint. The gap condition at the joint is observed for gap detection. After the gap detection is completed, the second driving member 43 drives the light-shielding plates 42 to move towards the light source 41. The two light-shielding plates 42 cooperate to block the light source 41. On the other hand, the setting of the light-shielding plates 42 can prevent welding slag from falling during the welding process, thereby achieving the effect of protecting the light source 41.

[0080] Please see Figure 6 , Figure 11 and Figure 12 The air blowing mechanism 5 includes a third driving member 52, a support arm 53, and an air nozzle 51. The third driving member 52 is disposed on the mounting base 1, the support arm 53 is disposed at the output end of the third driving member 52, and the air nozzle 51 is disposed at the end of the support arm 53 away from the third driving member 52, and the air nozzle 51 is used to communicate with an external air supply device. At least one of the cover plate 22 and the base plate 21 is provided with an air inlet 25, which corresponds to and communicates with the air nozzle 51. The clamp body 2 is provided with an air passage 26 around the mounting position 211. The air passage 26 has an air inlet end 261 and an air outlet end 262. The air inlet end 261 communicates with the air inlet 25, and the air outlet end 262 communicates with the welding through hole 212. In one embodiment, the second driving member 43 can be a rotary pressing cylinder, with two air inlets 25 and two air nozzles 51, the two air inlets 25 being respectively located on the base plate 21 and the cover plate 22; the third driving member 52 can drive the support arm 53 to rotate, so that the support arm 53 drives the air nozzle 51 to align with the air inlet 25, and at the same time the third driving member 52 moves toward the clamp body 2 so that the air nozzle 51 is connected to the air inlet 25, and the external air supply device blows argon gas toward the air inlet 25 through the air nozzle 51, and the argon gas enters through the upper and lower air inlets 25. The air inlet 261 then flows into the air passage 26, where the air is discharged outward through the outlet 262 and the welding through hole 212. The air inlet creates an isolated environment relative to the air around the mounting position 211, thereby enhancing the weld strength of the large part 6 and the small part 7 after welding. On the other hand, since the outlet 262 corresponds to the weld and the welding through hole 212 continuously discharges gas, it carries away the welding heat at the welding through hole 212, releasing the welding heat in time to reduce the probability of the welded parts cracking.

[0081] This application also discloses a welding device, which includes a welding head and the aforementioned workpiece clamping device. The welding head is positioned above the workpiece clamping device and is used to weld a small part 7 to a large part 6. Since the workpiece clamping device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0082] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A workpiece clamping device, characterized in that, include: Mounting base; A clamp body is disposed on the mounting base. The clamp body includes a base plate, and the base plate is provided with a mounting position for accommodating large and small parts. The adjustment mechanism includes a side-push component, a first fine-tuning component, and a second fine-tuning component. The first fine-tuning component and the second fine-tuning component are disposed on the base plate and located on both sides of the mounting position. The first fine-tuning component is used to press against the small part, and the second fine-tuning component is slidably disposed on the base plate. The side-push component has a side-push inclined surface. The side-push component is movably inserted into the mounting base and pushes the second fine-tuning component to move by the side-push inclined surface to press against the large part, so that the large part fits seamlessly with the small part, and further causes the small part to abut against the first fine-tuning component.

2. The workpiece clamping device according to claim 1, characterized in that, The first fine-tuning component includes a first fixed base and a first pressing block. The first fixed base is rotatably connected to the base plate via a first left-right rotation axis, and the first pressing block is rotatably connected to the first fixed base via a first up-down rotation axis to movably press against the small part.

3. The workpiece clamping device according to claim 1, characterized in that, The clamp body includes: Positioning plate; A positioning block is disposed at a distance from the positioning plate within the mounting position to position one end of the large component and the small component respectively; A connecting plate is provided on the base plate; A first elastic push block, one end of which is connected to the connecting plate, and the other end of which is spaced apart from the positioning plate at both ends of the large component; The second elastic push block is disposed at a distance from the positioning block on both ends of the small part; The first link has one end connected to the first elastic push block at a distance via a connecting plate, and the other end connected perpendicularly to the second elastic push block. A cam handle is rotatably mounted on the connecting plate. The cam handle drives the connecting plate to move the first connecting rod and the first elastic push block synchronously along the Y-axis direction, so that the first elastic push block pushes the large part to the positioning plate and, in conjunction with the second elastic push block, pushes the small part to the positioning block to achieve the positioning of the large part and the small part in the Y-axis direction.

4. The workpiece clamping device according to claim 3, characterized in that, The clamp body also includes a second connecting rod, which is spaced apart from the first connecting rod on the connecting plate. The second connecting rod has an clearance hole, and the inner wall of the clearance hole is provided with a guide slope. The second fine-tuning component further includes a side-push slider, a guide post, and a reset member. One end of the guide post is located in the clearance hole. The reset member is inserted into the side-push slider, and one end of the reset member is connected to the base plate through a connecting post. The cam handle drives the connecting plate to move and simultaneously drives the second connecting rod to move, so that the guide post drives the side-push slider away from the large component along the guide inclined surface and compresses the reset member, or so that the side-push slider moves towards the large component along the guide inclined surface under the rebound force of the reset member to push the large component and the small component to the first fine-tuning component, so as to realize the positioning of the large component and the small component in the X-axis direction.

5. The workpiece clamping device according to claim 4, characterized in that, The side-pushing ramp includes a first ramp and a second ramp that slide against each other, and the side-pushing assembly includes: A side push block, wherein the first inclined surface is formed on the side push block; The support has a movable hole, and the second inclined surface is formed in the movable hole; The second fixed seat is rotatably mounted on the bearing seat; The second pressing block is rotatably mounted on the second fixed seat; The first driving component has one end fixed to the mounting base and the other end connected to the side push block to drive the side push block to be inserted into the mounting base and the bearing base in sequence, so that the first inclined surface and the second inclined surface slide against the second fixed base, thereby linking the second pressing block to move toward the side push slider to press against the side push slider, so that the side push slider pushes against the large component and links to push the small component to the first fine adjustment component.

6. The workpiece clamping device according to claim 4, characterized in that, The clamp body also includes a cover plate and multiple sets of limiting components. The cover plate covers the large and small parts on the base plate. The multiple sets of limiting components are spaced apart on the cover plate. Each limiting component includes a first elastic element and a limiting post. One end of the first elastic element is disposed on the cover plate, and the other end is sleeved on the limiting post so that the limiting post elastically presses against the large or small part.

7. The workpiece clamping device according to claim 6, characterized in that, The side push slider is provided with a locking groove, and the clamp body also includes multiple self-locking components; the self-locking component includes a self-locking post and a second elastic element, one end of the second elastic element is connected to the cover plate, and the other end is sleeved on the self-locking post, and the self-locking post is movably inserted into the locking groove to restrict the movement of the side push slider.

8. The workpiece clamping device according to claim 6, characterized in that, The fixture body also has a welding through hole corresponding to the mounting position; the workpiece clamping device further includes a backlight mechanism, which includes a light source, a light shield, and a second driving member. The light source is set corresponding to the welding through hole to detect gaps at the joint between the large part and the small part. The light shield is set at the output end of the second driving member, which is set on the mounting base. The second driving member drives the light shield to move closer to the light source to block the light source, or drives the light shield to move away from the light source to release the blockage of the light source.

9. The workpiece clamping device according to claim 8, characterized in that, The workpiece clamping device further includes an air blowing mechanism, which includes an air nozzle for connecting to an external air supply device. At least one of the cover plate and the base plate is provided with an air inlet, which corresponds to and is connected to the air nozzle; the clamp body is provided with an air passage around the mounting position, the air passage has an air inlet end and an air outlet end, the air inlet end is connected to the air inlet, and the air outlet end is connected to the welding through hole.

10. A welding device, characterized in that, The device includes a welding head and a workpiece clamping device as described in any one of claims 1 to 9, wherein the welding head is disposed above the workpiece clamping device and is used to weld the small part to the large part.

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