An automatic fixture positioning system based on automobile parts welding

Abstract

The present invention relates to an automatic positioning system for a fixture used in welding automotive parts. In the technical field of welding fixtures, the automatic positioning system for a fixture used in welding automotive parts comprises a body, a support mechanism, a mainboard pressing and positioning mechanism, a side-pressure positioning mechanism, a first downward-pressing positioning mechanism, a second downward-pressing positioning mechanism, and a push-positioning and fixing mechanism. The push-positioning and fixing mechanism comprises a first sliding body, a pressing and positioning body, a first driving member, and a second driving member. The first sliding body is slidably disposed on the body, and its sliding direction is inclined. The first sliding body slides downward toward a position close to the placement of a single component C. The pressing and positioning body is slidably disposed on the first sliding body. The pressing and positioning body is used to position and press a single component D. The second driving member is used to drive the pressing and positioning body to slide toward or away from the placement of the single component C. The present invention has the advantage of ensuring clamping and positioning efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of welding fixtures, in particular to an automatic fixture positioning system based on the welding of automobile parts. Background Art

[0002] In the production process of automobile parts, multiple individual parts are mainly welded into automobile parts through spot welding with welding clamps. However, there are certain differences in the parts at the same position of the automobile body in different models.

[0003] Reference Figure 1 、 Figure 2 and Figure 3 In the prior art, there are two types of vehicles, Y and T. The body parts S of both models Y and T include single component A22, single component B23, single component C24, single component D25, single component E26 and single component F27, among which single component A22 is a main board, the cross-section of single component A22 is a groove-shaped, and there are overlap edges 221 on both sides; single component B23 and single component E26 are both welded to the side walls of single component A22, specifically, single component B23 is L-shaped, and single component E26 is irregular in shape; single component C24 has a groove-shaped cross-section, and single component C24 is welded to the end of single component A22; single component D25 has multiple fitting edges 251, and the multiple fitting edges 251 are welded to the inner wall of one end of single component C24 away from single component A22, and single component E26 is welded to the inner bottom wall of single component A22.

[0004] Compared with the Y model, the T model has a flash 222 on the side wall of the single component A22, and the T model also has a single component G28. The single component G28 is inverted U-shaped, and there are two single components G28. The two single components G28 are welded on the inner bottom walls of the single component A22 and the single component C24 respectively. In addition, the bottom wall of the T model single component C24 has a nut, while the same position on the bottom wall of the Y model single component C24 is a through hole.

[0005] Currently, when welding the body parts S of the Y and T models, in order to ensure the welding accuracy requirements, especially to ensure that the multiple fitting edges 251 of the single component D25 are precisely fitted with the inner wall of the single component C24 away from the end of the single component A22, the efficiency is low when clamping and positioning multiple single components. Summary of the Invention

[0006] In order to ensure the clamping and positioning efficiency to a certain extent, the present invention provides an automatic positioning system for a fixture based on automobile parts welding.

[0007] The present invention provides an automatic fixture positioning system for automobile parts welding, which adopts the following technical solutions:

[0008] An automatic fixture positioning system for welding automobile parts, comprising:

[0009] body;

[0010] A supporting mechanism, used to support single component A and single component C;

[0011] The mainboard pressing and positioning mechanism is used to position and fix the single component A;

[0012] The side pressure positioning mechanism is used to position and fix single component B and single component E to the side of single component A;

[0013] The first downward positioning mechanism is used to position and fix the single component C and the single component G;

[0014] The second downward positioning mechanism is used to position and fix the single component F;

[0015] A pushing, positioning, and fixing mechanism includes a first sliding body, a pressing, positioning body, a first driving member, and a second driving member. The first sliding body is slidably arranged on the machine body, and the sliding direction of the first sliding body is inclined. The first sliding body slides downward in the direction close to the placement position of the single product component C. The pressing, positioning body is slidably arranged on the first sliding body. The pressing, positioning body is used to position and press the single product component D. The first driving member is used to drive the first sliding body to slide, and the second driving member is used to drive the pressing, positioning body to slide in the direction close to or away from the placement position of the single product component C.

[0016] Preferably, the clamping positioning body includes a mounting body, a first positioning pin and a first pressure block. The mounting body is slidably set on the first sliding body. The second driving member is used to drive the mounting body to slide. There are multiple first positioning pins. Multiple first positioning pins are set on the mounting body. Multiple first positioning pins are used to pass through the positioning holes on the single product component D. The first pressure block is set on the mounting body. The first pressure block is used to abut against the side of the single product component D away from the single product component C.

[0017] Preferably, the support mechanism includes a plurality of support seats, and the plurality of support seats are all arranged on the machine body, and the support seats are used to support the single product component A or the single product component C.

[0018] Preferably, the mainboard clamping and positioning mechanism includes a mainboard main positioning pin, a mainboard mating positioning pin and a clamping assembly. The mainboard main positioning pin and the mainboard mating positioning pin are respectively arranged on any two support seats supporting the single product component A. The cross section of the mainboard main positioning pin is circular, and the maximum diameter of the mainboard main positioning pin matches the diameter of the positioning hole on the single product component A. The cross section of the mainboard mating positioning pin is hexagonal, and the maximum length of the cross section of the mainboard mating positioning pin matches the diameter of the positioning hole on the single product component A. The direction of the maximum length of the cross section of the mainboard mating positioning pin is perpendicular to the extension direction of the single product component A. The clamping assembly is used to press the single product component A onto multiple support seats.

[0019] Preferably, the side pressure positioning mechanism includes a side pressure positioning component 1 and a side pressure positioning component 2, the side pressure positioning component 1 includes a second sliding body, a second pressure block and a third driving member, the second sliding body is slidably arranged on the machine body, the second sliding body moves in the direction of approaching or away from the single product component A, the second pressure block is arranged on the second sliding body, the second pressure block is used to abut against the side of the single product component B away from the single product component A, the second pressure block is provided with a limiting groove for the end of the single product component B to extend into, the second pressure block is located above the limiting groove, the third driving member is used to drive the second sliding body to move, and the side pressure positioning component 2 is used to position and fix the single product component E to the side of the single product component A.

[0020] Preferably, the side pressure positioning assembly 2 includes a third sliding body, a second positioning pin, a third pressure block and a fourth driving member. The third sliding body is slidably set on the machine body, and the third sliding body moves in the direction of approaching or away from the single component A. There are multiple second positioning pins, and multiple second positioning pins are set on the third sliding body. The second positioning pin is used to pass through the positioning hole on the single component E. The third pressure block is set on the third sliding body. The third pressure block is used to abut against the side of the single component E away from the single component A, and the fourth driving member is used to drive the third sliding body to slide.

[0021] Preferably, the first downward pressure positioning mechanism corresponds to the single product component G one by one, and each of the first downward pressure positioning mechanisms includes a first adjusting arm, a first downward pressure arm, a first downward pressure seat, a first downward pressure positioning pin, a limit seat, a fourth pressure block and a fifth driving member. The first adjusting arm is hinged on the body, and the hinge axis of the first adjusting arm is parallel to the extension direction of the single product component A. The first downward pressure arm is hinged to the first adjusting arm, and the fifth driving member is used to drive the first downward pressure arm to move upward or downward away from one end of the single product component A. The first downward pressure seat is arranged on the first downward pressure arm. The first lower pressure seat is used to abut the single component G, and the first lower pressure positioning pin is arranged on the first lower pressure seat. The first lower pressure positioning pin is used to extend into the positioning hole on the corresponding single component G. When the single component G is in the welding position, the upper surface of the positioning hole of the single component G and the hinge center of the corresponding first adjustment arm hinged on the body are located in the same horizontal plane. The limit seat is used to limit the relative sides of the single component G. The fourth pressure block is arranged on the first lower pressure arm, and the fourth pressure block is used to abut against the single component A or the single component C.

[0022] Preferably, the second downward pressure positioning mechanism includes a second adjusting arm, a second downward pressure arm, a second downward pressure seat, a second downward pressure positioning pin and a sixth driving member. The second adjusting arm is hinged on the machine body, and the hinge axis of the second adjusting arm is parallel to the extension direction of the single component F. The second downward pressure arm is hinged to the second adjusting arm, and the sixth driving member is used to drive the second downward pressure arm to move upward or downward away from one end of the single component A. There are multiple second downward pressure seats, and multiple second downward pressure seats are all arranged on the second downward pressure arm. The second downward pressure seat is used to abut against the single component F. The second downward pressure positioning pin is arranged on the second downward pressure seat. The second downward pressure positioning pin is used to extend into the positioning hole corresponding to the single component F. When the single component F is in the welding position, the upper surface of the corresponding positioning hole of the single component F and the hinge center of the second adjusting arm hinged on the machine body are located in the same horizontal plane.

[0023] Preferably, the automatic positioning system of the fixture also includes a detection mechanism, which includes a first proximity switch, a second proximity switch, a third proximity switch, a fourth proximity switch, a fifth proximity switch, a sixth proximity switch, a seventh proximity switch and a vehicle type judgment proximity switch, the first proximity switch is used to detect single component A, the second proximity switch is used to detect single component B; the third proximity switch is used to detect single component E; the fourth proximity switch is used to detect single component G, the fifth proximity switch is used to detect single component C; the sixth proximity switch is used to detect single component F; the seventh proximity switch is used to detect single component D, and the vehicle type judgment proximity switch is used to detect burrs on single component A.

[0024] Preferably, the side pressure positioning mechanism corresponds to the single product component B and the single product component E respectively, and each side pressure positioning mechanism includes a fixed seat, a sliding seat, a suction cup, an unlocking channel, a sealing block, a seventh driving member and an adjustment component. The fixed seat is set on the machine body, and the sliding seat is slidably penetrated on the fixed seat. The sliding seat moves in the direction of approaching or moving away from the single product component A. The seventh driving member is used to drive the sliding seat to slide. The suction cup is set on the sliding seat, and the suction cup is used to adsorb the corresponding single product component B or single product component E. The unlocking channel is set in the sliding seat, and the unlocking channel is connected to the inside of the suction cup. The sealing block is slidably set in the fixed seat, and the sealing block is used to open or seal the unlocking channel. The adjustment component is used to adjust the sliding of the sealing block.

[0025] In summary, the present invention has the following beneficial technical effects:

[0026] During welding, first place single component A on the supporting mechanism, and position single component A through the mainboard clamping and positioning mechanism; then place single component C on the supporting mechanism so that the end of single component C abuts against the end of single component A, place single component B and single component E on the side pressure positioning mechanism, and position single component B and single component E through the side pressure positioning mechanism; hang single component D on the clamping and positioning body for positioning, and then place single component F in the corresponding position in single component A. If it is a T model, single component G also needs to be placed in the corresponding positions in single component A and single component C, and then fix single component A through the mainboard clamping and positioning mechanism, and fix single component B and single component through the side pressure positioning mechanism. Component E is fixed, single component C and single component G are fixed by the first downward positioning mechanism, and single component F is positioned and fixed by the second downward positioning mechanism; the second driving member drives the clamping positioning body to drive the fitting edge of single component D to extend into single component C, and then the first driving member drives the first sliding body to drive the clamping positioning body and single component D to move downward while approaching single component C, so that the fitting edge fits with the inner wall of single component C, so that each component can be quickly positioned and clamped, especially the multiple fitting edges of single component D can be quickly and accurately fitted without overlapping and misaligning single component D and single component C through displacement changes in multiple directions, thereby ensuring the clamping and positioning efficiency to a certain extent and facilitating subsequent welding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the body component S of the T model in the related art.

[0028] Figure 2 It is an exploded view of the overall structure of the body component S of the T model in the related art.

[0029] Figure 3 It is a schematic diagram of the overall structure of the body component S of the Y model in the related art.

[0030] Figure 4 It is a schematic diagram of the overall structure of Example 1 of the present invention.

[0031] Figure 5 This is an exploded view of the local structure of Example 1 of the present invention, mainly used to show the supporting mechanism.

[0032] Figure 6 It is a schematic diagram of the overall structure of the main main locating pin and the matching locating pin of the main board in Example 1 of the present invention.

[0033] Figure 7 It is a schematic diagram of the overall structure of the clamping assembly in Example 1 of the present invention.

[0034] Figure 8 It is a schematic diagram of the overall structure of the side pressure positioning component 1 in Example 1 of the present invention.

[0035] Figure 9 It is a schematic diagram of the overall structure of the side pressure positioning component 2 in Example 1 of the present invention.

[0036] Figure 10 It is a schematic diagram of the overall structure of the first downward pressing positioning mechanism in Example 1 of the present invention.

[0037] Figure 11 It is a schematic diagram of the overall structure of the second downward pressing positioning mechanism in Example 1 of the present invention.

[0038] Figure 12 It is a schematic diagram of the overall structure of the pushing, positioning and fixing mechanism in Example 1 of the present invention.

[0039] Figure 13 It is a schematic diagram of the overall structure of the pressure measuring and positioning mechanism in Example 2 of the present invention.

[0040] Figure 14 It is a partial structural cross-sectional view of embodiment 2 of the present invention.

[0041] Explanation of reference numerals: 1. body; 2. support mechanism; 201. support seat; 3. mainboard pressing and positioning mechanism; 31. mainboard main positioning pin; 32. mainboard matching positioning pin; 33. pressing assembly; 331. mainboard adjusting arm; 332. mainboard lower pressing arm; 333. mainboard lower pressing seat; 334. eighth driving member; 41. side pressure positioning assembly 1; 411. second sliding body; 412. second pressing block; 413. third driving member; 42. side pressure positioning assembly 2; 421. third sliding body; 422. second positioning pin; 423 , third pressing block; 424, fourth driving member; 5, first pressing and positioning mechanism; 51, first adjusting arm; 52, first pressing arm; 53, first pressing seat; 54, first pressing and positioning pin; 55, limiting seat; 56, fourth pressing block; 57, fifth driving member; 6, second pressing and positioning mechanism; 61, second adjusting arm; 62, second pressing arm; 63, second pressing seat; 64, second pressing and positioning pin; 65, sixth driving member; 7, pushing and positioning fixing mechanism; 71, first sliding body; 72, pressing and positioning body; 721, installation Body; 722, first positioning pin; 723, first pressure block; 73, first driving member; 74, second driving member; 8, first proximity switch; 9, second proximity switch; 10, third proximity switch; 11, fourth proximity switch; 12, fifth proximity switch; 13, sixth proximity switch; 14, seventh proximity switch; 15, vehicle type determination proximity switch; 16, fixing seat; 17, sliding seat; 18, suction cup; 19, unlocking channel; 20, sealing block; 21, seventh driving member; 22, single product component A; 221, overlap; 22 2. Flash; 23. Single component B; 24. Single component C; 25. Single component D; 251. Fitting edge; 26. Single component E; 27. Single component F; 28. Single component G; 29. ​​Guide rail; 30. First seat; 34. Second seat; 35. Third seat; 36. Fourth seat; 37. Fifth seat; 38. Stop block; 39. Tension spring; 40. Abutment column; 43. First arc surface; 44. Second arc surface; 45. Limiting groove; 46. Pressure column; 47. Return spring; 48. Telescopic rod. DETAILED DESCRIPTION

[0042] The following combination Figure 4-Figure 14 The present invention is described in further detail.

[0043] Example 1:

[0044] The embodiment of the present invention discloses an automatic positioning system for a fixture based on welding of automobile parts. Figure 4 and Figure 5The automatic positioning system of the fixture based on automobile parts welding includes a body 1, a supporting mechanism 2, a mainboard pressing and positioning mechanism 3, a side pressure positioning mechanism, a first downward pressure positioning mechanism 5, a second downward pressure positioning mechanism 6 and a push positioning and fixing mechanism 7; wherein, the cross section of the body 1 is rectangular, and the upper surface of the body 1 is horizontally set to facilitate the installation of various mechanisms.

[0045] Reference Figure 4 and Figure 5 Specifically, the supporting mechanism 2, the mainboard pressing and positioning mechanism 3, the side pressure positioning mechanism, the first downward pressing positioning mechanism 5, the second downward pressing positioning mechanism 6 and the pushing positioning and fixing mechanism 7 are all arranged on the body 1. The supporting mechanism 2 is used to support the single component A22 and the single component C24; the mainboard pressing and positioning mechanism 3 is used to position and fix the single component A22; the side pressure positioning mechanism is used to position and fix the single component B23 and the single component E26 to the side of the single component A22; the first downward pressing positioning mechanism 5 is used to position and fix the single component C24 and the single component G28; the second downward pressing positioning mechanism 6 is used to position and fix the single component F27.

[0046] Reference Figure 4 and Figure 5 Furthermore, to facilitate the positioning and securing of component D25, the push-positioning and securing mechanism 7 includes a first sliding member 71, a pressing and positioning member 72, a first driving member 73, and a second driving member 74. The first sliding member 71 is slidably connected to the housing 1 and has an inclined sliding direction. Specifically, the first sliding member 71 simultaneously slides downward as it slides toward the placement position of component C24. The first sliding member 71 is located on the side of component C24 that is away from component A22. The pressing and positioning member 72 is slidably mounted on the first sliding member 71, with its sliding direction parallel to the length of the housing 1. The pressing and positioning member 72 is used to position and secure component D25. The first driving member 73 is mounted on the housing 1 to drive the first sliding member 71 to slide. The second driving member 74 is mounted on the first sliding member 71 to drive the pressing and positioning member 72 to slide toward or away from the placement position of component C24.

[0047] During welding, first place the single component A22 on the supporting mechanism 2, and position the single component A22 through the mainboard pressing and positioning mechanism 3; then place the single component C24 on the supporting mechanism 2, so that the end of the single component C24 is in contact with the end of the single component A22. At this time, the single component C24 and the single component A22 are arranged in sequence in the direction away from the pushing positioning mechanism; place the single component B23 and the single component E26 on the side pressure positioning mechanism, and position the single component B23 and the single component E26 through the side pressure positioning mechanism; hang the single component D25 on the pressing and positioning body 72 for positioning, and then place the single component F27 in the corresponding position in the single component A22. If it is a T model, two single components G28 need to be placed in the corresponding positions of the inner bottom walls of the single component A22 and the single component C24 respectively, and then the single component A22 is pressed and positioned through the mainboard pressing and positioning mechanism 3. The single component B23 and the single component E26 are fixed by the side pressure positioning mechanism, the single component C24 and the single component G28 are fixed by the first downward pressure positioning mechanism 5, and the single component F27 is positioned and fixed by the second downward pressure positioning mechanism 6; the second driving member 74 drives the clamping positioning body 72 to drive the fitting edge 251 of the single component D25 to extend into the single component C24, and then the first driving member 73 drives the first sliding body 71 to drive the clamping positioning body 72 and the single component D25 to move downward while approaching the single component C24, so that the fitting edge 251 is fitted with the inner wall of the single component C24, so that each component can be quickly positioned and clamped, especially the multiple fitting edges 251 of the single component D25 can be quickly and accurately fitted through displacement changes in multiple directions without overlapping and misaligning the single component D25 and the single component C24, thereby ensuring the clamping and positioning efficiency to a certain extent.

[0048] Reference Figure 4 and Figure 5 In order to facilitate the support of the single component A22 and the single component C24, the support mechanism 2 includes a plurality of support seats 201. The plurality of support seats 201 are fixedly arranged on the surface of the body 1. The distribution of the plurality of support seats 201 is arranged according to the shapes of the single component A22 and the single component C24. The support seats 201 are used to support the single component A22 or the single component C24; specifically, the support seats 201 abut against the bottom wall of the single component A22 or the single component C24 at the corresponding position.

[0049] During welding, individual components A22 and C24 are placed on corresponding support bases 201. Support bases 201 support individual components A22 and C24, keeping them horizontal for subsequent welding. To improve positioning, side stoppers can be provided on body 1 as needed. These side stoppers are designed to abut against the outer walls of individual components A22 or C24.

[0050] Reference Figure 5 and Figure 6 To facilitate the positioning and fixing of the single component A22, the mainboard pressing and positioning mechanism 3 includes a mainboard positioning pin 31, a mainboard matching positioning pin 32, and a pressing assembly 33. The mainboard positioning pin 31 and the matching positioning pin 32 are respectively fixed to any two support seats 201 supporting the single component A22. Specifically, the mainboard positioning pin 31 is located on the side of the mainboard matching positioning pin 32 away from the single component C24. The mainboard positioning pin 31 has a circular cross-section, and its diameter decreases from bottom to top. The maximum diameter of the mainboard positioning pin 31 matches the diameter of the positioning hole of the single component A22. The matching positioning pin 32 has a hexagonal cross-section, and the spacing between the opposite sides of the matching positioning pin 32 decreases from bottom to top. The maximum length of the cross-section of the mainboard matching positioning pin 32 matches the diameter of the positioning hole of the single component A22. Furthermore, the direction of the maximum length of the cross-section of the mainboard matching positioning pin 32 is perpendicular to the extension direction of the single component A22.

[0051] When placing the single component A22 on the support seat 201, align the two positioning holes on the single component A22 with the main positioning pin 31 of the main board and the matching positioning pin 32 of the main board respectively, and move the single component A22 downward until the single component A22 abuts against the top wall of the support seat 201. At this time, the main positioning pin 31 of the main board and the matching positioning pin 32 of the main board pass through the positioning holes at the corresponding positions of the single component A22. Since the opposite sides of the maximum length direction of the matching positioning pin 32 of the main board abut against the inner walls of the positioning holes at the corresponding positions of the single component A22, the horizontal movement and rotation of the single component A22 are restricted. At the same time, the resistance during downward movement is small, thereby achieving the positioning of the single component A22.

[0052] Reference Figure 5 and Figure 6 In order to facilitate the positioning of the single component C24, a main part positioning pin and a matching part positioning pin are respectively fixed on any two support seats 201 supporting the single component C24. Among them, the structure of the main part positioning pin is the same as that of the main positioning pin 31 of the main board, and the structure of the matching part positioning pin is the same as that of the matching part positioning pin 32 of the main board.

[0053] Reference Figure 5 and Figure 7The pressing assembly 33 is provided on the body 1 and is used to press the single component A22 onto the multiple support seats 201. Specifically, the number of pressing assemblies 33 can be set as needed. In the embodiment of the present invention, two groups of pressing assemblies 33 are provided, one of which is located at the end of the single component A22 away from the single component C24, and the other is located in the middle of the single component A22, thereby helping to improve the pressing effect of the single component A22.

[0054] Reference Figure 5 and Figure 7 In order to facilitate pressing the single product component A22 onto multiple support seats 201, a first stand 30 is fixed on the body 1, and the first stand 30 corresponds to the pressing assembly 33 one by one; the pressing assembly 33 includes a mainboard adjustment arm 331, a mainboard lower pressure arm 332, a mainboard lower pressure seat 333 and an eighth driving member 334, and the mainboard adjustment arm 331 is hinged to the corresponding first stand 30 on the body 1, and the hinge axis of the mainboard adjustment arm 331 is parallel to the horizontal direction. Specifically, the hinge axis of the mainboard adjustment arm 331 located at the end of the single product component A22 away from the single product component C24 is perpendicular to the length direction of the single product component A22, and The hinge axis of the mainboard adjustment arm 331 located in the middle of the single component A22 is parallel to the length direction of the single component A22; the mainboard lower pressure arm 332 is hinged to the end of the mainboard adjustment arm 331 away from the first stand 30, and the hinge axis of the mainboard lower pressure arm 332 is parallel to the hinge axis of the corresponding mainboard adjustment arm 331. The distance from the end of the mainboard lower pressure arm 332 close to the single component A22 to its own hinge is greater than the distance from the end of the mainboard lower pressure arm 332 away from the single component A22 to its own hinge. The eighth driving member 334 is used to drive the mainboard lower pressure arm 332 to move upward or downward away from the end of the single component A22. There are multiple mainboard pressure seats 333, and the multiple mainboard pressure seats 333 are all fixedly set on the corresponding mainboard pressure arms 332. Specifically, the shape and structure of the mainboard pressure seats 333 can be set as needed so as to be able to abut against the bottom wall and inner wall of the single component A22; to ensure that the single component A22 is not easily deformed, the support seats 201 at the corresponding positions of the single component A22 are all corresponding to the mainboard pressure seats 333, so that the single component A22 is evenly pressurized and not easily deformed.

[0055] Reference Figure 7 To facilitate upward or downward movement of the end of the mainboard pressing arm 332 away from the component A22, the second driving member 74 is a pneumatic cylinder. The end of the mainboard pressing arm 332 away from the component A22 is hingedly engaged with the corresponding pneumatic cylinder. In other embodiments, the pneumatic cylinder can be replaced with an electric cylinder, an electric push rod, or the like.

[0056] In the initial state, the cylinder piston rod of the eighth driving member 334 is in a retracted state, and the eighth driving member 334 pulls the mainboard pressing arm 332 away from one end of the single component A22 and moves downward. Through the rotation cooperation of the mainboard adjusting arm 331, the mainboard pressing arm 332 is tilted upward at one end close to the support seat 201 to facilitate the placement of the single component A22.

[0057] When the single product component A22 is placed on the support seat 201, the eighth driving member 334 is started, and the cylinder of the eighth driving member 334 drives the mainboard lower pressure arm 332 to move upward away from one end of the single product component A22. Through the cooperation of the mainboard adjustment arm 331, the mainboard lower pressure arm 332 drives the mainboard lower pressure seat 333 to rotate downward, so that the mainboard lower pressure seat 333 abuts against the inner bottom wall or inner side wall of the single product component A22 at the corresponding position, thereby clamping the single product component A22 through the cooperation of the mainboard lower pressure seat 333 and the support seat 201.

[0058] Reference Figure 4 、 Figure 8 and Figure 9 In order to facilitate the positioning and fixation of single component B23 and single component E26, the side pressure positioning mechanism includes a side pressure positioning component 1 41 and a side pressure positioning component 2 42. The side pressure positioning component 1 41 corresponds to the single component B23, and the side pressure positioning component 2 42 corresponds to the single component E26. Specifically, a second stand 34 is fixed on the body 1. The second stand 34 is located below the single component A22 and extends out of the single component A22, so that the space can be reasonably utilized.

[0059] Reference Figure 4 and Figure 8 Specifically, the side pressure positioning assembly 41 includes a second sliding body 411, a second pressing block 412 and a third driving member 413. The second sliding body 411 is slidably sleeved on the end of the second stand 34 extending out of the single product component A22. The second sliding body 411 moves toward or away from the single product component A22. Specifically, the sliding direction of the second sliding body 411 is perpendicular to the length direction of the single product component A22; the second pressing block 412 is fixed on the second sliding body 411. The second pressing block 412 is used to move away from the single product component B23. One side of component A22 is abutted, specifically, the second pressure block 412 includes pressure block 1 and pressure block 2, there is a certain distance between pressure block 1 and pressure block 2, and a limiting groove 45 is provided on the upper surface of the second sliding body 411, pressure block 1 and pressure block 2 are located above the limiting groove 45, thereby forming a limiting cavity, the limiting groove 45 is used for one end of the single product component B23 to extend into, the width of the limiting groove 45 is equal to the width of the single product component B23, the third driving member 413 is arranged on the second stand 34, and the third driving member 413 is used to drive the second sliding body 411 to move.

[0060] Reference Figure 8In order to facilitate the sliding of the second sliding body 411, the third driving member 413 adopts a cylinder installed on the second stand 34. The second sliding body 411 is fixedly connected to the piston rod of the corresponding cylinder. In other embodiments, the cylinder can be replaced by an electric cylinder, an electric push rod, etc.

[0061] In the initial state, the cylinder piston rod of the third driving member 413 is in an extended state, so that the second pressure block 412 is in a state away from the placement position of the single product component A22; during welding, the L-shaped single product component B23 is placed in the limiting groove 45, and the side of the second pressure block 412 close to the single product component A22 abuts against the single product component B23, and the lower bottom wall of the second pressure block 412 also abuts against the single product component B23. The top wall of the limiting groove 45 and the second pressure block 412 cooperate to position the single product component B23 so that the single product component B23 can be placed stably. Then start the cylinder of the third driving member 413, and the third driving member 413 drives the second sliding seat 17 to drive the second pressure block 412 and the single product component B23 close to the side wall of the single product component A22 until the second pressure block 412 presses the single product component B23 to the side wall of the single product component A22, thereby achieving the fixation of the single product component B23 for subsequent welding operations.

[0062] Reference Figure 4 and Figure 9 , the side pressure positioning component 2 42 is used to position and fix the single product component E26 to the side of the single product component A22. A third stand 35 is fixed on the body 1. The third stand 35 is located below the placement position of the single product component A22 and extends out of the single product component A22; the side pressure positioning component 2 42 includes a third sliding body 421, a second positioning pin 422, a third pressure block 423 and a fourth driving member 424. The third sliding body 421 is slidably sleeved on the third stand 35. The third sliding body 421 moves toward or away from the single product component A22. Specifically, the sliding direction of the third sliding body 421 is perpendicular to the plane where the corresponding side wall of the single product component A22 is located; the second positioning pin 42 2 is provided with multiple second positioning pins 422, all of which are fixed on the third sliding body 421. The second positioning pins 422 are used to pass through the positioning holes on the single component E26. In the embodiment of the present invention, two second positioning pins 422 are provided for hanging the single component E26; the third pressure block 423 is fixed on the third sliding body 421. There are multiple third pressure blocks 423, and the multiple third pressure blocks 423 are distributed as needed to reserve welding positions; the third pressure block 423 is used to abut against the side of the single component E26 away from the single component A22. The fourth driving member 424 is provided on the third stand 35, and the fourth driving member 424 is used to drive the third sliding body 421 to slide.

[0063] Reference Figure 9In order to facilitate the sliding of the third sliding body 421, the fourth driving member 424 adopts a cylinder installed on the third stand 35. The third sliding body 421 is fixedly connected to the piston rod of the corresponding cylinder. In other embodiments, the cylinder can be replaced by an electric cylinder, an electric push rod, etc.

[0064] In the initial state, the cylinder piston rod of the fourth driving member 424 is in an extended state, so that the third pressure block 423 and the second positioning pin 422 are away from the position where the single product component A22 is placed; when welding, the two corresponding positioning holes of the single product component E26 are hung on the two second positioning pins 422, and the side of the third pressure block 423 close to the single product component A22 is in contact with the corresponding position of the single product component E26 to achieve the positioning of the single product component E26; then the cylinder of the fourth driving member 424 is started, and the fourth driving member 424 drives the third sliding seat 17 to drive the third pressing block 423, the second positioning pin 422 and the single component E26 to approach the side wall of the single component A22 until the third pressing block 423 presses the single component E26 onto the side wall of the single component A22. Since the single component E26 has a curved surface, when the single component E26 is pressed onto the side wall of the single component A22, the second positioning pin 422 will not interfere with the single component A, thereby realizing the rapid positioning and fixation of the single component E26.

[0065] Reference Figure 5 and Figure 10 In order to facilitate the positioning and fixing of the single component C24 and the single component G28, the first downward pressing positioning mechanism 5 corresponds to the single component G28 one by one, and the position of the first downward pressing positioning mechanism 5 is aligned with the welding position of the corresponding single component G28. A fourth stand 36 is fixed on the body 1, and the fourth stand 36 corresponds to the first downward pressing positioning mechanism 5 one by one.

[0066] Reference Figure 5 and Figure 10Specifically, each first downward pressure positioning mechanism 5 includes a first adjusting arm 51, a first downward pressure arm 52, a first downward pressure seat 53, a first downward pressure positioning pin 54, a limit seat 55, a fourth pressure block 56 and a fifth driving member 57. The first adjusting arm 51 is hinged on the corresponding fourth stand 36. The hinge axis of the first adjusting arm 51 is parallel to the extension direction of the single product component A22. The first downward pressure arm 52 is hinged to the end of the corresponding first adjusting arm 51 away from the body 1. The fifth driving member 57 is fixedly installed on the corresponding fourth stand 36. The fifth driving member 57 is used to drive the end of the first downward pressure arm 52 away from the single product component A22 to move upward or downward; the first downward pressure seat 53 is fixed on the first downward pressure arm 52. A plurality of first downward pressure seats 53 are provided to facilitate pressing the single product component G28. Specifically, the arrangement of the plurality of first downward pressure seats 53 is set according to needs. The first downward pressing positioning pin 54 is fixed on the first downward pressing seat 53. The first downward pressing positioning pin 54 is used to extend into the positioning hole on the corresponding single product component G28. When the single product component G28 is in the welding position, the upper surface of the positioning hole of the single product component G28 and the hinge center of the first adjustment arm 51 hinged on the fourth seat 36 are located in the same horizontal plane, thereby ensuring that the first downward pressing positioning pin 54 will not get stuck during the rotation of the first downward pressing arm 52, and can make the first downward pressing positioning pin 54 in a vertical state when extending into the positioning hole on the single product component G28.

[0067] Reference Figure 5 and Figure 10 Two limit seats 55 are provided, relatively fixed to the first lower pressure arm 52. Specifically, the two limit seats 55 are located on either side of the protrusion of the corresponding single component G28. The two limit seats 55 are used to limit the opposite sides of the single component G28. A fourth pressure block 56 is fixed to the first lower pressure arm 52. The fourth pressure block 56 is used to abut the corresponding overlapping edge of the single component C24 or the overlapping edge 221 of the single component A22. The number of fourth pressure blocks 56 can be set as needed.

[0068] Reference Figure 10 To facilitate upward or downward movement of the end of the first lower pressing arm 52 away from the component A22, the fifth driving member 57 is a pneumatic cylinder. The end of the first lower pressing arm 52 away from the component A22 is hingedly coupled to the corresponding pneumatic cylinder. In other embodiments, the pneumatic cylinder can be replaced with an electric cylinder, an electric push rod, or the like.

[0069] In the initial state, the cylinder piston rod of the fifth driving member 57 is in the retracted state, and the fifth driving member 57 pulls the first lower pressure arm 52 away from one end of the single product component A22 and moves downward. Through the rotation cooperation of the first adjusting arm 51, the end of the first lower pressure arm 52 close to the support seat 201 is tilted upward to facilitate the placement of the single product component C24; when the single product component A22 and the single product component C24 are placed on the support seat 201, for the T model, the two single product components G need to be placed at the required positions on the inner bottom walls of the single product component A22 and the single product component C24 respectively, and then the fifth driving member 57 is started, and the cylinder of the fifth driving member 57 drives the first lower pressure arm 52 away from the single product component One end of component A22 moves upward, and through the cooperation of the first adjusting arm 51, the first downward pressure arm 52 drives the first downward pressure seat 53 to abut against the upper surface of the single component G28 at the corresponding position. At the same time, the first downward pressure positioning pin 54 enters the corresponding positioning hole of the single component G28, and the limit seat 55 moves to the opposite sides of the single component G28 and abuts against the two sides of the corresponding single component G28, thereby realizing the positioning and fixation of the single component G28. At the same time, the fourth pressure block 56 abuts against the upper surface of the overlap 221 of the single component A22 or the single component C24 at the corresponding position, thereby pressing the single component A22 or the single component C24 at the corresponding position to a certain extent.

[0070] Reference Figure 5 and Figure 11In order to facilitate the positioning and fixing of the single component F27, a fifth stand 37 is fixed on the body 1. The second downward pressure positioning mechanism 6 includes a second adjusting arm 61, a second downward pressure arm 62, a second downward pressure seat 63, a second downward pressure positioning pin 64 and a sixth driving member 65. The second adjusting arm 61 is hinged on the fifth stand 37. The hinge axis of the second adjusting arm 61 is parallel to the extension direction of the single component F27. The second downward pressure arm 62 is hinged to the end of the second adjusting arm 61 away from the body 1. The sixth driving member 65 is installed on the fifth stand 37. The sixth driving member 65 is used to drive the end of the second downward pressure arm 62 away from the single component A22 to move upward or downward. The sixth driving member 65 adopts a cylinder. The end of the second downward pressure arm 62 away from the single component A is hinged to the corresponding cylinder piston rod. The cylinder can be replaced by an electric cylinder, etc. There are multiple second lower pressure seats 63, and the multiple second lower pressure seats 63 are all fixed on the second lower pressure arm 62. The number and distribution of the multiple second lower pressure seats 63 can be set as needed to press the single component F27. The second lower pressure positioning pin 64 is fixed on the second lower pressure arm 62. The second lower pressure positioning pin 64 is used to extend into the positioning hole on the corresponding single component F27. When the single component F27 is in the welding position, the upper surface of the corresponding positioning hole of the single component F27 and the hinge center of the second adjustment arm 61 hinged on the fifth stand 37 are located in the same horizontal plane, thereby ensuring that the second lower pressure positioning pin 64 will not get stuck during the rotation of the second lower pressure arm 62, and can make the second lower pressure positioning pin 64 in a vertical state when it extends into the positioning hole on the single component F27.

[0071] Reference Figure 5 and Figure 11 As needed, multiple second downward pressing positioning mechanisms 6 can be provided to improve the pressing effect. In an embodiment of the present invention, there are two groups of second downward pressing positioning mechanisms 6, and the two groups of second downward pressing positioning mechanisms 6 are located on the same side of the single component A22.

[0072] Reference Figure 5 and Figure 12 In order to facilitate the guidance of the sliding of the first sliding body 71, a guide rail 29 is fixed on the body 1. The horizontal length direction of the guide rail 29 is parallel to the length direction of the body 1. Specifically, the guide rail 29 is set at an angle, and the end of the guide rail 29 close to the single component C24 is tilted downward, and the inclination angle is less than 10°. The first sliding body 71 slides in cooperation with the guide rail 29.

[0073] Reference Figure 5 and Figure 12 In order to facilitate the movement of the first sliding body 71, the first driving member 73 adopts a cylinder, and the first sliding body 71 is fixedly connected to the piston rod of the corresponding cylinder. In other embodiments, the cylinder can be replaced by an electric cylinder or an electric push rod.

[0074] Reference Figure 5 and Figure 12 To facilitate the positioning and securing of component D25, the compacting and positioning body 72 includes a mounting body 721, a first positioning pin 722, and a first pressing block 723. The mounting body 721 is slidably mounted on the first sliding body 71, with the sliding direction of the mounting body 721 parallel to the length of the body 1. A second driving member 74 is mounted on the first sliding body 71 to drive the mounting body 721 to slide. Specifically, the second driving member 74 is a pneumatic cylinder, and the mounting body 721 is fixedly connected to the piston rod of the corresponding pneumatic cylinder. In other embodiments, the pneumatic cylinder can be replaced with an electric cylinder or electric push rod.

[0075] Reference Figure 12 There are multiple first positioning pins 722, and the multiple first positioning pins 722 are all fixed on the mounting body 721. The multiple first positioning pins 722 are used to pass through the positioning holes on the single component D25, and the first positioning pins 722 are staggered with the single component C24. In an embodiment of the present invention, there are two first positioning pins 722; the first pressure block 723 is fixed on the mounting body 721, and the first pressure block 723 is used to abut against the side of the single component D25 away from the single component C24.

[0076] In the initial state, the first sliding body 71, the mounting body 721, the first pressing block 723 and the first positioning pin 722 are all away from the position where the single component C24 is placed. During welding, the two corresponding positioning holes of the single component D25 are hung on the two first positioning pins 722, and the side of the first pressing block 723 close to the single component C24 abuts against the corresponding position of the single component D25 to achieve the positioning of the single component D25; then the cylinder of the second driving member 74 is activated, and the second driving member 74 drives the mounting body 721 to drive the first pressing block 723, the first positioning pin 722 and the single component D25 close to the single component C24, so that the single component D25 is positioned. The fitting edge 251 extends into the single component C24, and then the cylinder of the first driving member 73 is started to drive the first sliding body 71 to drive the clamping positioning body 72 as a whole and the single component D25 to move downward close to the single component C24, so that the fitting edge 251 is fitted with the inner wall of the single component C24, thereby enabling the multiple fitting edges 251 of the single component D25 to be quickly and accurately fitted while avoiding overlap and misalignment with the single component C24, thereby ensuring the clamping and positioning efficiency to a certain extent.

[0077] Reference Figure 7-12 The first driving member 73, the second driving member 74, the third driving member 413, the fourth driving member 424 and the eighth driving member 334 are all operated by the control valve stem on the body 1, while the fifth driving member 57 and the sixth driving member 65 are controlled by manually operating the first pressing arm 52 and the second pressing arm 62.

[0078] Reference Figure 5 、 Figures 8-12 The automatic positioning system also includes a detection mechanism, which includes a first proximity switch 8, a second proximity switch 9, a third proximity switch 10, a fourth proximity switch 11, a fifth proximity switch 12, a sixth proximity switch 13, a seventh proximity switch 14 and a vehicle type judgment proximity switch 15. A plurality of first proximity switches 8 are provided, and a plurality of first proximity switches 8 are fixedly mounted on the support seat 201 supporting the single product component A22. The first proximity switch 8 is used to detect the single product component A22; the second proximity switch 9 is fixedly mounted on the second pressure block 412, and the second proximity switch 9 is used to detect the single product component B23; the third proximity switch 10 is mounted on the third sliding body 421, and the third proximity switch 10 is used to detect the single product component E26; the fourth proximity switch 11 is mounted on the first lower pressure seat 53, and the fourth proximity switch 11 is used to detect the single product component G28, the fifth proximity switch 12 is installed on the first downward pressure arm 52 at the corresponding position of the single component C24, and the fifth proximity switch 12 is used to detect the single component C24. At the same time, the fifth proximity switch 12 can also be installed on the support base 201 supporting the single component C24; the sixth proximity switch 13 is set on the second downward pressure arm 62, and the sixth proximity switch 13 is used to detect the single component F27; the seventh proximity switch 14 is set on the clamping positioning body 72, and the seventh proximity switch 14 is used to detect the single component D25. The vehicle type judgment proximity switch 15 is installed on the second downward pressure arm 62 near the side of the flash 222. When the second downward pressure arm 62 near the side of the flash 222 is in a clamping state, the vehicle type judgment proximity switch 15 is aligned with the flash 222, and the vehicle type judgment proximity switch 15 is used to detect the flash 222 on the single component A22. Furthermore, the first proximity switch 8, the second proximity switch 9, the third proximity switch 10, the fourth proximity switch 11, the fifth proximity switch 12, the sixth proximity switch 13, the seventh proximity switch 14 and the vehicle type determination proximity switch 15 are all provided with indicator lights and are all wirelessly connected to the external control platform, which helps the operator to promptly determine whether each component is in place.

[0079] The implementation principle of Example 1 of the present invention is: during welding, the mainboard lower pressure arm 332, the first lower pressure arm 52 and the second lower pressure arm 62 are all in an upward tilted state, and the first sliding body 71, the second sliding body 411 and the third sliding body 421 are all on the side away from the placement position of the single product component A22, thereby providing sufficient space for the placement of the component.

[0080] During welding, first place the single component A22 on the corresponding multiple support seats 201, and the two positioning holes of the single component A22 are sleeved on the main positioning pin 31 of the main board and the matching positioning pin 32 of the main board to achieve positioning. At this time, the first proximity switch 8 detects the single component A22, and the indicator light of the first proximity switch 8 lights up; then place the single component C24 on the corresponding support seat 201, so that the two positioning holes of the single component C24 are also sleeved on the main positioning pin and the matching positioning pin of the part to position the single component C24. At this time, the end of the single component C24 is in contact with the end of the single component A22, and then the single component B23 is placed on the second support seat 201. In the limiting groove 45 of the pressing block 412, the second proximity switch 9 detects the single component B23 and its corresponding indicator light lights up, and the single component E26 is hung on the corresponding two second positioning pins 422. The third proximity switch 10 detects the single component E26 and its indicator light lights up; then the single component D25 is put on the corresponding two first positioning pins 722, and the sixth proximity switch 13 detects the single component D25 and its indicator light lights up; then the single component F27 is placed in the corresponding position in the single component A22. If it is a T model, the two single components G28 need to be placed in the corresponding positions in the single component A22 and the single component C24 respectively.

[0081] Then, the clamping assembly 33 is started to clamp and fix the single component A22, and the second sliding body 411 and the third sliding body 421 are driven to approach the single component A22 by the third driving member 413 and the fourth driving member 424 to press and fix the single component B23 and the single component E26. The first lower pressing arm 52 and the second lower pressing arm 62 are driven downward by the fifth driving member 57 and the sixth driving member 65 respectively, so as to fix and clamp the single component C24, the single component G28 and the single component F27. At this time, the fourth proximity switch 11 detects the single component G28 and its indicator light is on, the fifth proximity switch 12 detects the single component C and its indicator light is on, the sixth proximity switch 13 detects the single component F27 and its corresponding indicator light is on, and at the same time, the second driving member 74 is driven The clamping positioning body 72 drives the fitting edge 251 of the single component D25 to extend into the single component C24, and then the first driving member 73 drives the first sliding body 71 to drive the clamping positioning body 72 and the single component D25 to move downward while approaching the single component C24, so that the fitting edge 251 fits the inner wall of the single component C24. The vehicle type judgment proximity switch 15 transmits a signal to the external control platform to facilitate the welding system to judge the current vehicle type. If it is a T model, the indicator light at the vehicle type judgment proximity switch 15 lights up, so that each component can be quickly positioned and clamped, especially the multiple fitting edges 251 of the single component D25 can be quickly and accurately fitted through displacement changes in multiple directions while avoiding overlap and misalignment with the single component C24, thereby ensuring the clamping and positioning efficiency to a certain extent.

[0082] Example 2:

[0083] Reference Figure 5 and Figure 13 The difference between this embodiment and embodiment 1 is that the side pressure positioning mechanism corresponds to the single product component B23 and the single product component E26 respectively. Each side pressure positioning mechanism includes a fixed seat 16, a sliding seat 17, a suction cup 18, an unlocking channel 19, a sealing block 20, a seventh driving member 21 and an adjustment component. Among them, the fixed seat 16 is fixedly set on the body 1, one side of the fixed seat 16 is located below the single product component A22, and the other side is located outside the single product component A22. The sliding seat 17 is slidably penetrated by the fixed seat 16 and is located at the single product component At one end outside A22, the sliding seat 17 is aligned with the required position of the single component A22, and the sliding seat 17 moves toward or away from the single component A22. Specifically, the sliding direction of the sliding seat 17 is perpendicular to the plane of the side wall of the single component A22; the seventh driving member 21 is arranged on the fixed seat 16, and is used to drive the sliding seat 17 to slide. Specifically, the seventh driving member 21 is a cylinder, and the sliding seat 17 is fixedly connected to the piston rod of the corresponding cylinder. In other embodiments, the cylinder can also be replaced by an electric cylinder, an electric push rod, etc.

[0084] Reference Figure 5 、 Figure 13 and Figure 14 The suction cup 18 is a rubber suction cup and is fixed to the side of the sliding seat 17 near the placement of the single-product component A22. The suction cup 18 is used to absorb the corresponding single-product component B23 or single-product component E26, thereby being able to adapt to components of different shapes and structures. The unlocking channel 19 is fixed in the sliding seat 17 and communicates with the interior of the suction cup 18. The sealing block 20 is slidably arranged in the fixed seat 16. Specifically, a telescopic rod 48 is fixed between the bottom wall of the fixed seat 16 and the sealing block 20. The extension direction of the telescopic rod 48 is parallel to the sliding direction of the sliding seat 17. The sealing block 20 is used to open or block the unlocking channel 19, and the adjustment assembly is used to adjust the sliding of the sealing block 20. To ensure the fixing effect, a plurality of pressure columns 46 are fixed to the side of the sliding seat 17 near the suction cup 18. The pressure columns 46 are used to abut the corresponding components. The sliding seat 17 can also be provided with positioning pins as needed.

[0085] Reference Figure 13 and Figure 14 When the stopper 38 is in the closed position, the first stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper 38 is in the closed position, and the second stopper

[0086] Reference Figure 13 and Figure 4 A tension spring 39 is disposed within the telescopic rod 48. One end of the tension spring 39 is fixed to the rod connected to the fixed seat 16, and the other end is fixed to the rod connected to the sealing block 20. In the initial state, the tension spring 39 is in a natural state. An abutment column 40 is fixed to the side of the fixed seat 16 away from the telescopic rod 48. The abutment column 40 corresponds one-to-one with the stopper 38. The side of the stopper 38 near the suction cup 18 has a second curved surface 44. The distance between the two second curved surfaces 44 and the side of the sliding seat 17 near the suction cup 18 decreases as they move away from each other. The abutment column 40 is configured to slide relative to the second curved surface 44. In other embodiments, the adjustment assembly can be replaced with a cylinder, and the sealing block 20 is connected to the corresponding cylinder piston rod.

[0087] The implementation principle of Example 2 of the present invention is: in the initial state, the sealing block 20 seals the unlocking channel 19, and the side of the sealing block 20 away from the unlocking channel 19 abuts against the block 38, the reset spring 47 is in a natural state, and at this time the tension spring 39 is also in a natural state.

[0088] During welding, the single component B23 or the single component E26 is fixed to the suction cup 18 by suction. At this time, since the unlocking channel 19 is in a sealed state, the suction cup 18 will remain in the adsorption state. When the single component B23 or the single component E26 approaches the single component A22, the tension spring 39 is gradually stretched. Due to the limiting effect of the stopper 38 on the sealing block 20, the sealing block 20 still blocks the unlocking channel 19; then the stopper 38 gradually approaches the abutment column 40, and the abutment column 40 and the The second curved surface 44 of the stop block 38 should slide relative to each other, driving the stop block 38 to slide in the direction away from the sealing block 20 until the single component B23 or the single component E26 abuts against the single component A22. At this time, the abutting column 40 abuts the stop block 38 and moves it to be offset from the sealing block 20. Then the stretched tension spring 39 pulls the sealing block 20 away from the unlocking channel 19, thereby releasing the adsorption effect of the suction cup 18, and pressing the single component B23 or the single component E26 through the pressure column 46.

[0089] After the welding is completed, the sliding seat 17 moves back to the fixed seat 16. Since the suction cup 18 is in the unlocked state, it will not produce a large adsorption force on the component. Then, the sealing block 20 will not move under the restriction of the telescopic rod 48. As the sliding seat 17 drives the stopper 38 to continue to approach the sealing block 20, the second arc surface 44 disengages from the abutment column 40. Then, the sealing block 20 and the first arc surface 43 of the two stops 38 slide relative to each other, driving the two stops 38 to move away from each other, causing the return spring 47 to deform until the stopper 38 moves to the side of the sealing block 20 away from the suction cup 18. At this time, the sealing block 20 extends into the unlocking channel 19 to block the unlocking channel 19. Then, under the action of the return spring 47, the stopper 38 is reset to continue to limit the sealing block 20, thereby maintaining the adsorption of the suction cup 18, which is convenient for next use. The side pressure positioning mechanism of this embodiment is simple and convenient, and there is no need to open multiple positioning holes on the components, and it can be applied to components of different shapes.

[0090] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic fixture positioning system based on automobile parts welding, characterized in that: include: Body (1); A support mechanism (2) for supporting the single component A (22) and the single component C (24); The mainboard pressing and positioning mechanism (3) is used to position and fix the single component A (22); A side pressure positioning mechanism for positioning and fixing the single component B (23) and the single component E (26) to the side of the single component A (22); A first downward positioning mechanism (5) is used to position and fix the single component C (24) and the single component G (28); A second downward positioning mechanism (6) is used to position and fix the single component F (27); A push positioning and fixing mechanism (7), the push positioning and fixing mechanism (7) comprising a first sliding body (71), a pressing positioning body (72), a first driving member (73) and a second driving member (74), the first sliding body (71) being slidably arranged on the machine body (1), the sliding direction of the first sliding body (71) being inclined, the first sliding body (71) sliding downward in a direction close to the placement position of the single component C (24), the pressing positioning body (72) being slidably arranged on the first sliding body (71), the pressing positioning body (72) being used to position and press the single component D (25), the first driving member (73) being used to drive the first sliding body (71) to slide, and the second driving member (74) being used to drive the pressing positioning body (72) to slide in a direction close to or away from the placement position of the single component C (24); The side pressure positioning mechanism includes a side pressure positioning component 1 (41) and a side pressure positioning component 2 (42), wherein the side pressure positioning component 1 (41) includes a second sliding body (411), a second pressing block (412) and a third driving member (413), wherein the second sliding body (411) is slidingly arranged on the machine body (1), and the second sliding body (411) moves toward or away from the single component A (22), and the second pressing block (412) is arranged on the second sliding body (411). (412) is used to abut against the side of the single component B (23) away from the single component A (22), and the second pressing block (412) is provided with a limiting groove (45) for the end of the single component B (23) to extend into, and the second pressing block (412) is located above the limiting groove (45). The third driving member (413) is used to drive the second sliding body (411) to move, and the side pressure positioning component 2 (42) is used to position and fix the single component E (26) to the side of the single component A (22).

2. The automatic fixture positioning system for automobile parts welding according to claim 1, characterized in that: The clamping positioning body (72) includes a mounting body (721), a first positioning pin (722) and a first pressing block (723). The mounting body (721) is slidably arranged on the first sliding body (71). The second driving member (74) is used to drive the mounting body (721) to slide. A plurality of first positioning pins (722) are provided. The plurality of first positioning pins (722) are provided on the mounting body (721). The plurality of first positioning pins (722) are used to pass through the positioning holes on the single component D (25). The first pressing block (723) is provided on the mounting body (721). The first pressing block (723) is used to abut against the side of the single component D (25) away from the single component C (24).

3. The automatic fixture positioning system for automobile parts welding according to claim 1 is characterized in that: The support mechanism (2) comprises a plurality of support seats (201), each of which is arranged on the machine body (1), and the support seats (201) are used to support a single component A (22) or a single component C (24).

4. The automatic fixture positioning system for automobile parts welding according to claim 3 is characterized in that: The mainboard pressing and positioning mechanism (3) comprises a mainboard main positioning pin (31), a mainboard matching positioning pin (32) and a pressing assembly (33). The mainboard main positioning pin (31) and the mainboard matching positioning pin (32) are respectively arranged on any two support seats (201) supporting the single component A (22). The cross section of the mainboard main positioning pin (31) is circular. The maximum diameter of the mainboard main positioning pin (31) matches the diameter of the positioning hole on the single component A (22). The cross section of the mainboard matching positioning pin (32) is hexagonal. The maximum length of the cross section of the mainboard matching positioning pin (32) matches the diameter of the positioning hole on the single component A (22). The direction of the maximum length of the cross section of the mainboard matching positioning pin (32) is perpendicular to the extension direction of the single component A (22). The pressing assembly (33) is used to press the single component A (22) onto multiple support seats (201).

5. The automatic fixture positioning system for automobile parts welding according to claim 1, characterized in that: The side pressure positioning component 2 (42) includes a third sliding body (421), a second positioning pin (422), a third pressure block (423) and a fourth driving member (424). The third sliding body (421) is slidably arranged on the machine body (1). The third sliding body (421) moves toward or away from the single component A (22). There are multiple second positioning pins (422). The multiple second positioning pins (422) are all arranged on the third sliding body (421). The second positioning pin (422) is used to pass through the positioning hole on the single component E (26). The third pressure block (423) is arranged on the third sliding body (421). The third pressure block (423) is used to abut against the side of the single component E (26) away from the single component A (22). The fourth driving member (424) is used to drive the third sliding body (421) to slide.

6. The automatic fixture positioning system for automobile parts welding according to claim 1, characterized in that: The first downward pressing positioning mechanism (5) corresponds to the single component G (28) one by one, and each of the first downward pressing positioning mechanisms (5) includes a first adjusting arm (51), a first downward pressing arm (52), a first downward pressing seat (53), a first downward pressing positioning pin (54), a limiting seat (55), a fourth pressing block (56) and a fifth driving member (57). The first adjusting arm (51) is hinged on the machine body (1), and the hinge axis of the first adjusting arm (51) is parallel to the extension direction of the single component A (22). The first downward pressing arm (52) is hinged to the first adjusting arm (51), and the fifth driving member (57) is used to drive the first downward pressing arm (52) to move upward or downward away from one end of the single component A (22). The first downward pressing seat (53) is arranged on the first downward pressing arm. (52), the first pressing seat (53) is used to abut the single component G (28), the first pressing positioning pin (54) is set on the first pressing seat (53), and the first pressing positioning pin (54) is used to extend into the positioning hole on the corresponding single component G (28). When the single component G (28) is located in the welding position, the upper surface of the positioning hole of the single component G (28) and the hinge center of the corresponding first regulating arm (51) hinged on the body (1) are located in the same horizontal plane, and the limiting seat (55) is used to limit the opposite sides of the single component G (28). The fourth pressing block (56) is set on the first pressing arm (52), and the fourth pressing block (56) is used to abut against the single component A (22) or the single component C (24).

7. The automatic fixture positioning system for automobile parts welding according to claim 1, characterized in that: The second downward pressing positioning mechanism (6) includes a second adjusting arm (61), a second downward pressing arm (62), a second downward pressing seat (63), a second downward pressing positioning pin (64) and a sixth driving member (65), wherein the second adjusting arm (61) is hinged on the machine body (1), the hinge axis of the second adjusting arm (61) is parallel to the extension direction of the single component F (27), the second downward pressing arm (62) is hinged to the second adjusting arm (61), the sixth driving member (65) is used to drive the second downward pressing arm (62) to move upward or downward away from one end of the single component A (22), and the second downward pressing seat ( 63) are provided with a plurality of second lower pressing seats (63), and the plurality of second lower pressing seats (63) are all provided on the second lower pressing arm (62), and the second lower pressing seat (63) is used to abut against the single component F (27), and the second lower pressing positioning pin (64) is provided on the second lower pressing seat (63), and the second lower pressing positioning pin (64) is used to extend into the positioning hole of the corresponding single component F (27). When the single component F (27) is located in the welding position, the upper surface of the single component F (27) at the corresponding positioning hole and the hinge center of the second adjusting arm (61) hinged on the body (1) are located in the same horizontal plane.

8. An automatic fixture positioning system for automobile parts welding according to any one of claims 1 to 7, characterized in that: The fixture automatic positioning system also includes a detection mechanism, which includes a first proximity switch (8), a second proximity switch (9), a third proximity switch (10), a fourth proximity switch (11), a fifth proximity switch (12), a sixth proximity switch (13), a seventh proximity switch (14) and a vehicle type judgment proximity switch (15). The first proximity switch (8) is provided in plurality, and the plurality of first proximity switches (8) are used to detect a single component A (22), and the second proximity switch (9) is used to detect a single component B (23); the third proximity switch (10) is used to detect a single component E (26); the fourth proximity switch (11) is used to detect a single component G (28), and the fifth proximity switch (12) is used to detect a single component C (24); the sixth proximity switch (13) is used to detect a single component F (27); the seventh proximity switch (14) is used to detect a single component D (25), and the vehicle type judgment proximity switch (15) is used to detect a burr (222) on a single component A (22).

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