Automatic welding device for automobile parts

Abstract

The invention discloses an automatic welding device for automobile parts. The automatic welding device is mainly composed of a machine body, a shaft moving mechanism, a driving mechanism, an internal expansion mechanism and a quick release mechanism. The internal expansion type position fixing and quick dismounting device has the internal expansion type position fixing and quick dismounting functions, by arranging structures such as the driving mechanism, the internal expansion mechanism, the quick dismounting mechanism, the push shaft, the sliding groove and the ejection piece, the air cylinder is started, the air cylinder drives the output shaft to extend outwards, and due to combination of a connecting block A, a connecting block B and a pin block, the output shaft of the air cylinder drives the push shaft to move synchronously; due to the limitation of the shape of the conical groove of the outer ring, the conical groove of the push shaft pushes the push column to slide in the shaft sleeve through the sliding groove, so that the ejection piece moves outwards, the silencer shell is tensioned, the surface of the ejection piece is attached to the inner wall of the silencer shell, the position of the shell is fixed, and the effect of internal expansion type position fixing is achieved.

Description

Technical Field

[0001] This application relates to the field of automated welding technology, and in particular to an automated welding device for automotive parts. Background Technology

[0002] Automotive parts, also known as auto components, auto parts, or auto spare parts, refer to the components that make up the various units of a vehicle and all consumable materials that serve the vehicle. They are characterized by a wide variety, complex substitutes, complex identification systems, and rapid price fluctuations. System components, system assemblies, parts, and other related components of a complete vehicle are all called automotive parts. Automated welding equipment is required in the production and manufacturing of automotive parts.

[0003] In the existing technology, for example, in the welding production of automotive exhaust muffler components, there is no matching or compatible clamping and fixing device. Due to the unique thin-walled characteristics of the muffler components, ordinary clamping and fixing components can cause the inner wall to dent and deform when fixing the position with strong clamping force. Moreover, the muffler components must be fixed during welding, otherwise assembly and welding are impossible. Summary of the Invention

[0004] This application proposes an automated welding device for automotive parts, which has the advantages of internal expansion clamping and quick mold changing, in order to solve the problem of the lack of a matching clamping and fixing device mentioned in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: an automated welding device for automotive parts, comprising a body and a shifting mechanism. The shifting mechanism is fixedly installed on the top of the body near the back, and a welding torch is fixedly connected to the end of the shifting mechanism. A placement frame is fixedly installed on one side of the shifting mechanism on the top of the body, and a display mechanism is provided on the other side of the shifting mechanism on the top of the body. A drive mechanism is fixedly installed on the top of the body near the front edge, and an inner expansion mechanism is movably connected to the end of the drive mechanism. A sliding mechanism is fixedly installed on one side of the drive mechanism on the top of the body. A quick-release mechanism connects the drive mechanism and the inner expansion mechanism, and the inner expansion mechanism is fixedly installed on the end of the drive mechanism via the quick-release mechanism.

[0006] Through the above structural design, the internal expansion mechanism and the drive mechanism work together to fix the muffler housing in an internal expansion position, while avoiding housing deformation. The cylinder pushes the push shaft to slide inside the cylinder through the connection between the output shaft and the push shaft. The conical groove and sliding groove on the surface of the push shaft will push the top plate and the push column to move outward in parallel, so that the surface of the top plate fits against the inner wall of the muffler housing, thus fixing its internal expansion position.

[0007] Furthermore, the drive mechanism includes a housing, which is fixedly installed on the top of the machine body. A cylinder is fixedly installed inside the housing, and a connecting block A is fixedly installed at the end of the output shaft of the cylinder. The connecting block A is C-shaped in general, and a pin A is slidably installed on the top of the connecting block A.

[0008] With the above structural configuration, the drive mechanism uses a cylinder as the drive source of this device to drive the internal expansion mechanism to tension and contract the muffler housing. Furthermore, through the connection between the connecting block A, pin A, and the internal expansion mechanism, the cylinder output shaft moves synchronously with the push shaft.

[0009] Furthermore, the internal expansion mechanism includes a base and a cylindrical body. The cylindrical body is provided on the surface of the base. A push shaft is slidably installed inside the cylindrical body. A connecting block B is fixedly installed near the end of the push shaft close to the connecting block A. The connecting block B is generally in the shape of a horizontal C and is at a snap-fit ​​angle with the connecting block A. A pin is fixedly installed inside the connecting block B, and a pin groove is provided on the top surface of the pin.

[0010] With the above structural arrangement, when connecting block B is inserted between connecting blocks A, its outer surface fits against the inner wall of connecting block A. Then, pin A is inserted into the interior of connecting block A and connecting block B to fix the position between connecting block A and pin.

[0011] Furthermore, the outer wall of the pin block is adapted to the inner wall of the connecting block A in terms of shape and size, the pin A and the pin groove are adapted to each other in terms of shape and size, and the connecting block A and the connecting block B are fixedly connected by the pin block and the pin A.

[0012] Furthermore, the outer ring of the push shaft is provided with intermittent tapered grooves, and the outer ring of the push shaft is provided with uniformly spaced sliding grooves in a circular shape. The outer ring of the cylinder is provided with top plates respectively. The top plates on the upper and lower sides of the cylinder are flat plates, and the top plates on the left and right sides of the cylinder are arc-shaped. The cylinder is provided with uniformly spaced bushings in a circular shape inside. The inner side of the top plates is provided with push columns in a linear array and slidably sleeved inside the bushings. The end of the push column is a ball and is slidably installed inside the sliding groove.

[0013] With the above structural design, when the push shaft is driven by the cylinder to slide inside the cylinder, the push shaft will move outward due to the shape of the slide groove, thus tightening the muffler housing.

[0014] Furthermore, the sliding mechanism includes a guide rail, a slide plate, and a card. The guide rail is horizontally arranged on the top of the machine body and located on one side of the drive mechanism. A slide plate is slidably installed on the top outer ring of the guide rail, and a card is installed on the surface of the slide plate near the drive mechanism.

[0015] With the above structural design, the card and the muffler end cap are sized to match. In practical applications, the end cap can be installed or snapped onto the outer ring of the card, and the end cap can be moved by the position of the sliding plate and fit into the muffler housing.

[0016] Furthermore, the quick-release mechanism includes a connecting seat and a snap-fit ​​seat. The connecting seat is symmetrically fixedly installed on one side of the housing and located on both sides of the cylinder output shaft. The snap-fit ​​seat is symmetrically fixedly installed on one side of the base, and the connecting seat and the snap-fit ​​seat are positioned correspondingly. The snap-fit ​​seat has pins B symmetrically provided on its surface, and the top and bottom of the snap-fit ​​seat are provided with snap-fit ​​grooves.

[0017] With the above structural setup, when the internal expansion mechanism is connected and installed with the drive mechanism, the pin B needs to be aligned with the pin hole to avoid misalignment of the connection position. The slot and the horizontal column are compatible, and the position of the locking seat is restricted by the locking of the horizontal column.

[0018] Furthermore, the surface of the connecting seat is symmetrically provided with pin holes, the pin holes are corresponding to the position of pin B and are adapted in shape and size. The connecting seat is symmetrically provided with straight grooves located above and below pin B. The connecting seat is symmetrically slidably installed with pressure columns inside, and the ends of the pressure columns extend out of the connecting seat. A spring is fixedly connected between the ends of the pressure columns and the inside of the connecting seat. Horizontal columns are provided on both sides of the pressure columns inside the straight grooves, and the shape and size of the horizontal columns are adapted to the slots.

[0019] With the above structural setup, pressing the top plate causes the top plate compression spring to retract into the connecting seat, and the horizontal column moves synchronously inside the straight groove. When the surface of the locking seat is in contact with the surface of the connecting seat, releasing the hand pressing the pressure column releases the spring elastically, causing the pressure column and the horizontal column to move upward, so that the horizontal column slides inside the straight groove and locks into the slot.

[0020] This application provides an automated welding device for automotive parts. By setting up a drive mechanism, an internal expansion mechanism, a quick-release mechanism, a push shaft, a slide groove, and a top plate, the device activates a cylinder, which drives the output shaft to extend outward. Due to the combination of connecting block A, connecting block B, and the pin block, the output shaft of the cylinder drives the push shaft to move synchronously. When the push shaft moves, due to the shape limitation of its outer ring tapered groove, the push shaft tapered groove pushes the push column to slide inside the bushing through the slide groove, thereby causing the top plate to move outward, thus tightening the muffler housing and making the surface of the top plate fit against the inner wall of the muffler housing, fixing the position of the housing, and achieving the effect of internal expansion-type position fixing.

[0021] This application provides an automated welding device for automotive parts. By incorporating a drive structure, an internal expansion mechanism, a quick-release mechanism, a connecting seat, and a snap-fit ​​seat, the device enables rapid assembly and disassembly of the internal expansion mechanism. Connecting block B is aligned with connecting block A, and then the pin B is aligned with its pin hole. Pressing the pressure pin causes it to move the horizontal column into the connecting seat, bringing the internal expansion mechanism close to the surface of the connecting seat via the snap-fit ​​seat. Positioning between pin B and the pin hole prevents installation misalignment. Once the snap-fit ​​seat and connecting seat are fully engaged, releasing the pressure pin releases the spring's elasticity, pushing the pressure pin upwards. The pressure pin then moves the horizontal column, locking it in the slot. This fixes the positions of the connecting seat and the snap-fit ​​seat, achieving rapid assembly and disassembly. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0023] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the connection between the driving mechanism and the internal expansion mechanism of the present invention; Figure 3 This is a schematic diagram of the internal structure of the drive mechanism of the present invention; Figure 4 This is an exploded view of the connecting block A and connecting block B of the present invention; Figure 5 This is a schematic diagram of the internal expansion mechanism of the present invention; Figure 6 This is a first-view schematic diagram of the internal expansion mechanism structure of the present invention; Figure 7 This is a second-view schematic diagram of the internal expansion mechanism structure of the present invention; Figure 8 This is an exploded view of the internal structure of the quick-release mechanism of the present invention.

[0024] The components are as follows: 1. Body; 2. Shifting mechanism; 21. Welding torch; 3. Placement rack; 4. Display mechanism; 5. Drive mechanism; 51. Housing; 52. Cylinder; 53. Connecting block A; 54. Pin A; 6. Internal expansion mechanism; 61. Base; 62. Cylinder; 63. Push shaft; 64. Connecting block B; 65. Pin block; 66. Slide groove; 67. Top plate; 68. Bushing; 69. Push column; 7. Sliding mechanism; 71. Guide rail; 72. Slide plate; 73. Card; 8. Quick release mechanism; 81. Connecting seat; 82. Snap-fit ​​seat; 83. Pin B; 84. Snap-fit ​​groove; 85. Pin hole; 86. Straight groove; 87. Pressure column; 88. Spring; 89. Horizontal column. Detailed Implementation

[0025] 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 of ordinary skill in the art without creative effort are within the scope of protection of this application. Example

[0026] Please see Figure 1 An automated welding device for automotive parts includes a body 1. A pivot shifting mechanism 2 is fixedly installed on the top of the body 1 near the back. A welding torch 21 is fixedly connected to the end of the pivot shifting mechanism 2. The pivot shifting mechanism 2 can drive the welding torch 21 to move in any direction through reciprocating and linear motion of different axes, thereby facilitating welding. A placement rack 3 is fixedly installed on the top of the body 1 on one side of the pivot shifting mechanism 2. The muffler housing to be welded can be placed on the top of the placement rack 3 for welding, or the muffler end cap can be aligned and stacked on the top of the placement rack 3 for easy access. A display mechanism 4 is provided on the top of the body 1 on the other side of the pivot shifting mechanism 2 for easy operation, design parameters, etc. The aforementioned pivot shifting mechanism 2, placement rack 3, and display mechanism 4 are all prior art and are only used in a conventional manner in this application, so they are not described in detail.

[0027] Please see Figure 1 A drive mechanism 5 is fixedly installed on the top of the body 1 near the front side. An inner expansion mechanism 6 is movably connected to the end of the drive mechanism 5. A sliding mechanism 7 is fixedly installed on the top of the body 1 on one side of the drive mechanism 5. A quick-release mechanism 8 is connected between the drive mechanism 5 and the inner expansion mechanism 6. The inner expansion mechanism 6 is fixedly installed on the end of the drive mechanism 5 through the quick-release mechanism 8.

[0028] In practical applications, this device achieves internal expansion and position fixation of the muffler housing by setting the cooperation between the internal expansion mechanism 6 and the drive mechanism 5, while avoiding housing deformation. The cylinder 52 pushes the push shaft 63 to slide inside the cylinder 62 through the connection between the output shaft and the push shaft 63. The conical groove and sliding groove 66 on the surface of the push shaft 63 will push the top plate 67 and the push column 69 to move outward in parallel, so that the surface of the top plate 67 fits against the inner wall of the muffler housing, thus fixing its internal expansion position. The quick-release mechanism 8, which connects the drive mechanism 5 and the inner expansion mechanism 6, enables the quick disassembly and installation of the inner expansion mechanism 6, facilitating the user's rapid replacement of inner expansion mechanisms 6 of different sizes. During use, the inner expansion mechanism 6 is connected to the connecting block A53 via the connecting block B64, and its position is fixed and supported via the connection between the connecting seat 81 and the snap-fit ​​seat 82. During disassembly and replacement, simply press the pressure column 87 to compress the spring 88, causing the horizontal column 89 to retract synchronously into the connecting seat 81. Since the snap-fit ​​slot 84 is not restricted by the horizontal column 89, it can be quickly removed from the outside of the connecting seat 81, achieving the effect of rapid replacement.

[0029] Please see Figure 1 The sliding mechanism 7 includes a guide rail 71, a slide plate 72, and a card 73. The guide rail 71 is horizontally arranged on the top of the body 1 and located on one side of the drive mechanism 5. The slide plate 72 is slidably installed on the outer ring of the top of the guide rail 71. The card 73 is installed on the surface of the slide plate 72 near the drive mechanism 5. The card 73 is sized to match the muffler end cap. In practical applications, the end cap can be installed or snapped onto the outer ring of the card 73. The end cap can be moved by sliding the position of the slide plate 72 and fit into the muffler housing.

[0030] Please see Figures 1-4 The drive mechanism 5 includes a housing 51, which is fixedly installed on the top of the body 1. A cylinder 52 is fixedly installed inside the housing 51. A connecting block A53 is fixedly installed at the end of the output shaft of the cylinder 52. The connecting block A53 is C-shaped in general, and a pin A54 is slidably installed on the top of the connecting block A53.

[0031] The drive mechanism 5 uses cylinder 52 as the drive source of this device to drive the internal expansion mechanism 6 to tension and contract the muffler housing. It is connected to the internal expansion mechanism 6 through connecting block A53 and pin A54, so that when the output shaft of cylinder 52 moves, it drives the push shaft 63 to move synchronously, thus achieving synchronous tension and contraction.

[0032] Please see Figures 1-7 The internal expansion mechanism 6 includes a base 61 and a cylinder 62. The cylinder 62 is provided on the surface of the base 61. A push shaft 63 is slidably installed inside the cylinder 62. A connecting block B64 is fixedly installed near the end of the connecting block A53. The connecting block B64 is generally in the shape of a horizontal C and is at a snap-fit ​​angle with the connecting block A53. A pin block 65 is fixedly installed inside the connecting block B64. A pin groove is provided on the top surface of the pin block 65.

[0033] The internal expansion mechanism 6 is connected to the connecting block B64, the pin block 65, and the connecting block A53, so that the cylinder 52 drives the push shaft 63 to move synchronously when it moves. It can be quickly replaced during disassembly. By pulling out the pin A54, the connection between the connecting block A53 and the connecting block B64 is made into contact, and then the internal expansion mechanism 6 can be pulled out.

[0034] Please see Figures 1-7 The outer wall of pin 65 is compatible with the inner wall of connecting block A53 in terms of shape and size, and the pin A54 is compatible with the pin groove in terms of shape and size. Connecting block A53 and connecting block B64 are fixedly connected by pin 65 and pin A54.

[0035] When connecting block B64 is inserted between connecting blocks A53, its outer surface fits against the inner wall of connecting block A53. Then, pin A54 is inserted into the interior of connecting block A53 and connecting block B64 to fix the position between connecting block A53 and pin 65.

[0036] Please see Figures 1-7 The outer ring of the push shaft 63 is intermittently provided with tapered grooves, and the outer ring of the push shaft 63 is uniformly provided with sliding grooves 66 in a circular shape. The outer ring of the cylinder 62 is provided with top plates 67 respectively. The top plates 67 on the upper and lower sides of the cylinder 62 are flat, and the top plates 67 on the left and right sides of the cylinder 62 are arc-shaped. The cylinder 62 is uniformly provided with bushings 68 in a circular shape inside. The push columns 69 are uniformly provided in a linear array inside the top plates 67 and are slidably sleeved inside the bushings 68. The end of the push column 69 is a ball and is slidably installed inside the sliding groove 66.

[0037] The initial position of the push rod 69 is located in the slide groove 66 inside the cone groove of the push shaft 63. When the push shaft 63 is driven by the cylinder 52 to slide inside the cylinder 62, the push shaft 63 is displaced. Due to the shape of the slide groove 66, the top plate 67 will extend outward, which will tighten the muffler housing. Since the inside of the slide groove 66 is adapted to the ball at the end of the push rod 69, the push rod 69 will not encounter any jamming when it slides inside the slide groove 66, and can achieve smooth sliding.

[0038] Please see Figures 1-8 The quick-release mechanism 8 includes a connecting seat 81 and a snap-fit ​​seat 82. The connecting seat 81 is symmetrically fixedly installed on one side of the housing 51 and located on both sides of the output shaft of the cylinder 52. The snap-fit ​​seat 82 is symmetrically fixedly installed on one side of the base 61, and the positions of the connecting seat 81 and the snap-fit ​​seat 82 are corresponding. The surface of the snap-fit ​​seat 82 is symmetrically provided with pins B83, and the top and bottom of the snap-fit ​​seat 82 are provided with slots 84.

[0039] When the internal expansion mechanism 6 is connected and installed with the drive mechanism 5, the pin B83 and the pin hole 85 need to be aligned to avoid the connection position from shifting. The slot 84 and the horizontal column 89 are compatible. The position of the locking seat 82 is restricted by the locking of the horizontal column 89, so that the connection position between the internal expansion mechanism 6 and the connecting seat 81 through the locking seat 82 is fixed.

[0040] Please see Figures 1-8 The surface of the connecting seat 81 is symmetrically provided with pin holes 85, which correspond to the position of the pin B83 and are compatible in shape and size. The connecting seat 81 is symmetrically provided with straight grooves 86, which are located above and below the pin B83. The connecting seat 81 is symmetrically slidably installed with pressure pins 87 inside, and the ends of the pressure pins 87 extend out of the connecting seat 81. A spring 88 is fixedly connected between the ends of the pressure pins 87 and the inside of the connecting seat 81. Horizontal bars 89 are provided on both sides of the pressure pins 87 inside the straight grooves 86, and the shape and size of the horizontal bars 89 are compatible with the slots 84.

[0041] When installing and removing the internal expansion mechanism 6, the top plate 67 needs to be pressed to compress the spring 88 and retract it into the connecting seat 81. At the same time, the horizontal column 89 moves synchronously inside the straight groove 86. When the locking seat 82 and the connecting seat 81 are installed, they can move smoothly. When the surface of the locking seat 82 is in contact with the surface of the connecting seat 81, the hand pressing the pressure column 87 is released. At this time, the spring 88 is released elastically, which drives the pressure column 87 and the horizontal column 89 to move upward. The horizontal column 89 slides inside the straight groove 86 and locks into the locking groove 84, which restricts the position of the locking seat 82 and achieves position fixation.

[0042] Working principle: During use, the muffler housing to be welded is fitted onto the outer ring of the inner expansion mechanism 6. However, it is important to note that muffler housings of different sizes require matching inner expansion mechanisms 6 of corresponding sizes; otherwise, insufficient tension may result in the housing being stretched and expanded. After fitting, cylinder 52 is activated, driving the output shaft to extend outwards. Due to the connection between connecting block A53, connecting block B64, and pin 65, the output shaft of cylinder 52 drives the push shaft 63 to move synchronously. When the push shaft 63 moves... Due to the shape limitation of its outer ring conical groove, the push shaft 63 conical groove pushes the push column 69 to slide inside the bushing 68 through the slide groove 66, thereby causing the top plate 67 to move outward, thereby tightening the muffler housing, so that the surface of the top plate 67 fits against the inner wall of the muffler housing, fixing the position of the housing. Then the muffler end cover is clipped onto the end of the card 73, and then the slide plate 72 is pushed to fit the end cover against the housing. Then the shifting shaft mechanism 2 and the welding gun 21 are activated, so that the welding gun 21 welds between the housing and the end cover. After the welding and processing of mufflers of the same batch and size are completed, the inner expansion mechanism 6 is replaced to facilitate the clamping of the muffler housing of the next size. Before replacement, the cylinder 52 is started to push the output shaft of the cylinder 52 back to the initial position. Then, the pin A54 is pulled out from the inside of the pin block 65 and the position between the contact connecting block A53 and the connecting block B64 is fixed. Then, the upper and lower pressure columns 87 are pressed to make the pressure column 87 drive the horizontal column 89 to move into the connecting seat 81, so that the slot 84 is freed from the restriction of the horizontal column 89. At this time, the inner expansion mechanism 6 can be completely disassembled from the end of the drive mechanism 5. After taking out the new-sized internal expansion mechanism 6, first align the positions of connecting block B64 and connecting block A53. Then align the position of pin B83 with pin hole 85. By pressing the pressure pin 87, the pressure pin 87 moves the horizontal pin 89 into the connecting seat 81. The internal expansion mechanism 6 is then brought close to the surface of the connecting seat 81 via the snap-fit ​​seat 82. The positioning between pin B83 and pin hole 85 prevents installation position deviation. Once the snap-fit ​​seat 82 and connecting seat 81 are fully engaged, release the pressure pin 87. The hand releases the elasticity of spring 88, pushing the pressure column 87 upward. Then, the pressure column 87 drives the horizontal column 89 to move, so that the horizontal column 89 is locked inside the slot 84. The positions of the connecting seat 81 and the locking seat 82 are fixed, so that the internal expansion mechanism 6 is installed on one side of the drive mechanism 5. Then, the pin A54 is inserted into the pin block 65 through the top of the connecting block A53, so that the positions of the connecting block A53 and the connecting block B64 are fixed, and the new size muffler housing can be tightened and clamped.

Claims

1. An automated welding device for automotive parts, characterized in that, The device includes a body (1) and a tilt mechanism (2). The tilt mechanism (2) is fixedly installed on the top of the body (1) near the back. A welding torch (21) is fixedly connected to the end of the tilt mechanism (2). A placement rack (3) is fixedly installed on the top of the body (1) on one side of the tilt mechanism (2). A display mechanism (4) is provided on the top of the body (1) on the other side of the tilt mechanism (2). A drive mechanism (5) is fixedly installed on the top of the body (1) near the front side. An internal expansion mechanism (6) is movably connected to the end of the drive mechanism (5). A sliding mechanism (7) is fixedly installed on the top of the body (1) on one side of the drive mechanism (5). A quick-release mechanism (8) is connected between the drive mechanism (5) and the internal expansion mechanism (6). The internal expansion mechanism (6) is fixedly installed on the end of the drive mechanism (5) through the quick-release mechanism (8).

2. The automated welding device for automotive parts according to claim 1, characterized in that, The drive mechanism (5) includes a housing (51), which is fixedly installed on the top of the body (1). A cylinder (52) is fixedly installed inside the housing (51). A connecting block A (53) is fixedly installed at the end of the output shaft of the cylinder (52). The connecting block A (53) is C-shaped in general. A pin A (54) is slidably installed on the top of the connecting block A (53).

3. The automated welding device for automotive parts according to claim 2, characterized in that, The internal expansion mechanism (6) includes a base (61) and a cylinder (62). The base (61) has a cylinder (62) on its surface. A push shaft (63) is slidably installed inside the cylinder (62). A connecting block B (64) is fixedly installed near the end of the connecting block A (53). The connecting block B (64) is generally in the shape of a horizontal C and is at a snap-fit ​​angle with the connecting block A (53). A pin block (65) is fixedly installed inside the connecting block B (64). A pin groove is opened on the top surface of the pin block (65).

4. The automated welding device for automotive parts according to claim 3, characterized in that, The outer wall of the pin block (65) is adapted to the inner wall of the connecting block A (53) in terms of shape and size. The pin column A (54) is adapted to the pin groove in terms of shape and size. The connecting block A (53) and the connecting block B (64) are fixedly connected by the pin block (65) and the pin column A (54).

5. An automated welding device for automotive parts according to claim 4, characterized in that, The outer ring of the push shaft (63) is provided with intermittent tapered grooves. The outer ring of the push shaft (63) is provided with uniformly spaced sliding grooves (66). The outer ring of the cylinder (62) is provided with top plates (67). The top plates (67) on the upper and lower sides of the cylinder (62) are flat. The top plates (67) on the left and right sides of the cylinder (62) are arc-shaped. The cylinder (62) is provided with uniformly spaced bushings (68) in a circular ring. The inner side of the top plates (67) is provided with uniformly spaced push columns (69) in a linear array and slidably sleeved inside the bushings (68). The end of the push column (69) is a ball and is slidably installed inside the sliding groove (66).

6. The automated welding device for automotive parts according to claim 1, characterized in that, The sliding mechanism (7) includes a guide rail (71), a slide plate (72), and a card (73). The guide rail (71) is horizontally arranged on the top of the body (1) and located on one side of the drive mechanism (5). The slide plate (72) is slidably installed on the outer ring of the top of the guide rail (71). The card (73) is installed on the surface of the slide plate (72) near the drive mechanism (5).

7. An automated welding device for automotive parts according to claim 5, characterized in that, The quick-release mechanism (8) includes a connecting seat (81) and a snap-fit ​​seat (82). The connecting seat (81) is symmetrically fixedly installed on one side of the housing (51) and located on both sides of the output shaft of the cylinder (52). The snap-fit ​​seat (82) is symmetrically fixedly installed on one side of the base (61), and the connecting seat (81) and the snap-fit ​​seat (82) are positioned correspondingly. The snap-fit ​​seat (82) has pins B (83) symmetrically provided on its surface. The snap-fit ​​seat (82) has slots (84) at its top and bottom.

8. An automated welding device for automotive parts according to claim 7, characterized in that, The connecting seat (81) has symmetrically opened pin holes (85) on its surface. The pin holes (85) correspond to the pin B (83) in position and are compatible in shape and size. The connecting seat (81) has symmetrically opened straight slots (86) inside, which are located above and below the pin B (83). The connecting seat (81) has symmetrically slidably installed pressure pins (87) inside, and the ends of the pressure pins (87) extend out of the connecting seat (81). The ends of the pressure pins (87) are fixedly connected to the inside of the connecting seat (81) with springs (88). The pressure pins (87) have horizontal bars (89) on both sides inside the straight slots (86). The horizontal bars (89) are compatible in shape and size with the slots (84).

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