A welding positioning mold for new energy vehicle frame

Abstract

The present invention relates to the technical field of welding positioning equipment, and in particular to a new energy vehicle frame welding positioning mold, comprising a positioning machine base, the positioning machine base is provided with a bottom positioning mechanism for lifting and positioning the bottom of the frame and a top positioning mechanism for pressing and positioning the top of the frame, the positioning machine base is also provided with a cooling mechanism, the cooling mechanism comprises a nozzle module, the nozzle module comprises a cooling nozzle located at the top of the positioning machine base and a nozzle seat for installing the cooling nozzle, the opening of the cooling nozzle is arranged tilted upward, and the cooling nozzle can spray coolant toward the bottom of the frame welding part; when one or more areas of the frame sheet metal are welded, the nozzle seat will move accordingly, so that the cooling nozzle is close to the welding part, and coolant can be sprayed on the welding part, the welding part is quickly cooled down, and the frame sheet metal is prevented from being deformed due to excessive temperature; the space above will not be occupied, the space of the positioning machine base can be reasonably utilized, and the welding part can be quickly and accurately cooled down.

Description

Technical Field

[0001] The invention relates to the technical field of welding positioning equipment, and in particular to a welding positioning mold for a new energy vehicle frame. Background Art

[0002] The subframe is the skeleton of the front and rear axles and is a component of the front and rear axles. The subframe is not a complete frame, but a bracket that supports the front and rear axles and suspension, so that the axles and suspension are connected to the "main frame" through it. It is usually called the "subframe". The subframe is also divided into the front subframe and the rear subframe. The function of the subframe is to block vibration and noise.

[0003] The subframe is usually assembled from multiple metal beams and then welded. During the welding process, in order to improve the welding accuracy, multiple clamps are required to limit and clamp each component.

[0004] Among them, the invention with application number CN202311647906.8 discloses a welding and assembly fixture for automobile subframes, including a supporting plate and several adjustable clamping mechanisms; the adjustable clamping mechanism includes an adjustable supporting mechanism, a bottom supporting mechanism, a rotating adjustment mechanism and a self-adjusting pressing mechanism; the self-adjusting pressing mechanism includes a telescopic protective component, a pressing component, a second hydraulic cylinder, an adaptive angle adjustment component and an elastic pressure component; a self-adjusting pressing mechanism is added, and the self-adjusting pressing mechanism can automatically adjust the pressing component therein during the opening and closing process of the clamp-type clamp, so that the pressing component can always maintain a state perpendicular to the horizontal plane, and can be adjusted according to the actual parameters of the subframe, so that the pressing component can apply vertical pressure to the subframe from a vertical direction in different opening and closing degrees. The self-adjusting pressing mechanism can form different shapes of angled states from a straight line state, which is suitable for subframe welding processes with different parameters.

[0005] When welding new energy vehicle frames, a large amount of heat will be generated at the welding points. Therefore, coolant will be used to cool the welding points to ensure the rigidity of the frame. Since there are multiple welding points, the existing cooling structures are fixed in one place. When welding the remaining welding points, it is usually necessary to add cooling spray points or dismantle the original spray heads and install them to the corresponding welding points. The above scheme is relatively cumbersome and it is impossible to quickly spray coolant to cool different welding areas according to needs. Summary of the invention

[0006] The purpose of the present invention is to provide a new energy vehicle frame welding positioning mold in view of the deficiencies in the prior art.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] A new energy vehicle frame welding positioning die includes a positioning machine base, the positioning machine base is provided with a bottom positioning mechanism for lifting and positioning the bottom of the frame and a top positioning mechanism for pressing and positioning the top of the frame, and is characterized in that:

[0009] The bottom positioning mechanism comprises a support base, the support base is equipped with a bottom support frame capable of longitudinal movement, the bottom support frame is equipped with a plurality of first bottom positioning strips and second bottom positioning strips, wherein the first bottom positioning strips are arranged obliquely, and the ends of the first bottom positioning strips are formed with first limiting strips arranged longitudinally; the second bottom positioning strips are arranged in a curved manner;

[0010] The first bottom positioning strip is formed with a positioning adjustment groove along the length direction, the positioning adjustment groove has a bottom positioning block slidably mounted thereon with damping, and the bottom positioning block is formed with a positioning contact seat that can be movably raised or recessed; an insertion rod is formed on the side of the first limit strip, and the first bottom positioning strip is formed with an insertion hole for guiding the insertion rod;

[0011] The positioning machine base is also provided with a cooling mechanism, which includes a nozzle module, the nozzle module includes a cooling nozzle located at the top of the positioning machine base and a nozzle seat for installing the cooling nozzle, the opening of the cooling nozzle is arranged tilted upward, and the cooling nozzle can spray coolant toward the bottom of the frame welding part; the positioning machine base is provided with a plurality of first sliding grooves arranged parallel to each other and spaced apart along the width direction, the number of the nozzle modules is the same as the number of the first sliding grooves, and each first sliding groove is provided with a nozzle module; the first sliding groove is provided with a connecting cylinder for connecting with the nozzle seat;

[0012] A driving cavity is formed in the positioning machine base, and a movable driving member for driving the nozzle seat to move along the first sliding groove is arranged in the driving cavity; the movable driving member includes a guide rail member coaxially arranged in the length direction of the first sliding groove, and a linear module arranged parallel to the guide rail member, and the driving end of the linear module is connected to the nozzle seat; the nozzle seat is provided with an angle adjustment component for driving the cooling nozzle to rotate, and the angle adjustment component includes a cooling outlet opened at the top of the nozzle seat, and the bottom of the connecting tube is rotatably connected to the cooling outlet; the connecting tube is coaxially sleeved with a first synchronous wheel, and the nozzle seat is equipped with a second synchronous wheel arranged flush with the first synchronous wheel, and a synchronous belt is transmission-sleeved between the first synchronous wheel and the second synchronous wheel.

[0013] Beneficial effects of the present invention:

[0014] 1. Since the frame sheet metal has an arc-shaped surface, the curved second bottom positioning strip can guide and support the arc-shaped part, increase the surface contact area, further improve the positioning stability, and make the frame sheet metal less likely to move during welding;

[0015] 2. According to the concave and convex positions of the frame sheet metal, the bottom positioning block can be moved accordingly so that the bottom positioning block can cooperate with the corresponding concave part to support the concave part. A large gap appears in the area where the frame sheet metal contacts the first bottom positioning strip, which affects the stability of positioning. According to the different depths of the concave part, the positioning contact seat can move up and down on the bottom positioning block to further fit the concave part, increase the surface contact area, and improve the stability of support;

[0016] 3. When one or more areas of the frame sheet metal are welded, the nozzle seat will move accordingly, so that the cooling nozzle is close to the welding point, and coolant can be sprayed on the welding point to quickly cool the welding point and prevent the frame sheet metal from deforming due to excessive temperature. And because the cooling nozzle and the nozzle seat are located in the positioning machine base, they will not occupy the space above, and the space of the positioning machine base can be reasonably used, and the welding point can be quickly and accurately cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the welding positioning mold.

[0018] Figure 2 It is a structural schematic diagram of the bottom positioning mechanism.

[0019] Figure 3 It is a schematic diagram of the partial structure of the first bottom positioning strip.

[0020] Figure 4 It is a structural schematic diagram of the top positioning mechanism.

[0021] Figure 5 It is a structural schematic diagram of the conical seat.

[0022] Figure 6 Schematic diagram of the exploded structure of the clamping mechanism.

[0023] Figure 7 Schematic diagram of the internal structure of the conical seat.

[0024] Figure 8 It is a schematic diagram of the structure of the conical seat from another perspective.

[0025] Fig. 9 This is a schematic diagram of the second supporting column structure of the top positioning mechanism.

[0026] Fig.10 It is a structural schematic diagram of the connection between the second supporting column and the supporting driving seat.

[0027] Fig.11 Schematic diagram of the structure of the second layering strip.

[0028] Fig.12 It is a schematic diagram of the structure of the cooling mechanism.

[0029] Reference numerals include:

[0030] 1-positioning machine base, 100-frame sheet metal,

[0031] 10-bottom positioning mechanism, 11-support base, 12-bottom support frame, 13-first bottom positioning strip, 14-positioning adjustment slot, 15-bottom positioning block, 16-positioning contact seat, 17-first limit strip,

[0032] 18-insertion rod, 19-insertion hole, 191-second bottom positioning bar,

[0033] 2. One-piece positioning mechanism,

[0034] 21-first supporting column, 22-first swing seat, 23-first swing bar, 24-a part pressing seat,

[0035] 25-first top telescopic cylinder, 26-second top telescopic cylinder, 27-first fulcrum,

[0036] 28-first driving point, 29-first driven point,

[0037] 3-Clamping mechanism,

[0038] 30-conical seat, 31-first positioning block, 32-second positioning block, 33-first movable groove,

[0039] 34-second movable groove, 35-rotating shaft, 36-rotating sleeve, 37-first rolling bearing,

[0040] 38- Second rolling bearing,

[0041] 4-Fixed plate,

[0042] 40- plane plate, 41- first guide column, 42- first sliding seat, 43- first long groove,

[0043] 44-second guide column, 45-second sliding seat, 46-second long slot, 47-rotation hole,

[0044] 48-first guide groove, 49-second guide groove,

[0045] 5- The second supporting column,

[0046] 50-support driving seat, 51-inclined supporting seat, 52-longitudinal plate, 53-inclined plate, 54-semicircular groove, 55-driving rod, 56-guide rack, 57-guide sleeve, 58-driving gear,

[0047] 6- The second layering strip,

[0048] 61-driving bar, 62-rotating bar, 63-inclined pressing block, 64-center hole, 65-center axis,

[0049] 66-movable shaft, 67-positioning hole,

[0050] 7-Cooling mechanism,

[0051] 70-nozzle module, 71-cooling nozzle, 72-nozzle seat, 73-first sliding groove, 74-cooling outlet,

[0052] 75-connecting cylinder, 76-first synchronous wheel, 77-second synchronous wheel, 78-synchronous belt,

[0053] 8-Temperature control system,

[0054] 81-driving chamber, 82-guide rail, 83-linear module, 84-moving seat, 85-temperature sensor,

[0055] 86- distance sensor, 87- sensor sheet. DETAILED DESCRIPTION

[0056] The present invention is described in detail below with reference to the accompanying drawings.

[0057] like Figure 1-12 As shown, a new energy vehicle frame welding positioning mold includes a positioning machine base 1, and the positioning machine base 1 is provided with a bottom positioning mechanism 10 for lifting and positioning the bottom of the frame and a top positioning mechanism 2 for pressing and positioning the top of the frame.

[0058] The bottom positioning mechanism 10 includes a support base 11, and the support base 11 is equipped with a bottom support frame 12 that can move longitudinally. The support base 11 is provided with a lifting cylinder connected to the bottom support frame 12, and the lifting cylinder can drive the bottom support frame 12 to lift and lower to support and position the frame sheet metal 100. The bottom support frame 12 is equipped with a plurality of first bottom positioning bars 13 and second bottom positioning bars 191, and the second bottom positioning bars 191 are arranged in a curved manner; since the frame sheet metal 100 has an arc-shaped surface, the curved second bottom positioning bars 191 can be used to guide and support the arc, increase the surface contact area, and further improve the stability of positioning, so that the frame sheet metal 100 is not easy to move during welding.

[0059] Furthermore, the first bottom positioning bar 13 is arranged obliquely, and a positioning adjustment groove 14 is formed on the top of the first bottom positioning bar 13 along the length direction. The positioning adjustment groove 14 has a bottom positioning block 15 installed with damping sliding, and the bottom positioning block 15 is formed with a positioning contact seat 16 that can be movably raised or recessed; in this embodiment, the bottom positioning block 15 can be moved accordingly according to the concave and convex position of the frame sheet metal 100, so that the bottom positioning block 15 can cooperate with the corresponding concave part to support the concave part, and a large gap appears in the area where the frame sheet metal 100 contacts the first bottom positioning bar 13, affecting the stability of positioning. The positioning contact seat 16 can also be lifted and lowered on the bottom positioning block 15 according to the depth of the concave part, further fitting the concave part, increasing the area of ​​surface contact, and improving the stability of support.

[0060] It should be noted that a bottom movable groove is formed on the top of the bottom positioning block 15, and a bottom mounting block that slides with the bottom movable groove is formed on the bottom of the positioning contact seat 16. The bottom mounting block is provided with a compression spring located in the bottom movable groove. Under the elastic drive of the compression spring, the positioning contact seat 16 will be elastically lifted up. According to the concave depth of the frame sheet metal 100, the positioning contact seat 16 can be elastically lifted up to support it at a corresponding height to achieve multi-directional support.

[0061] A longitudinally arranged first limiting strip 17 is formed at the end of the first bottom positioning strip 13; an insertion rod 18 is formed at the side of the first limiting strip 17, and an insertion hole 19 for guiding the insertion rod 18 is formed at the first bottom positioning strip 13; when the first limiting strip 17 is arranged longitudinally, the side of the frame sheet metal 100 can be clamped to prevent the frame sheet metal 100 from lateral deviation and movement. After replacing different frame sheet metals 100, the first limiting strip 17 can be slidably matched with the insertion hole 19 of the first bottom positioning strip 13 through the first insertion rod 18 according to the size of the frame to adjust the position of the first limiting strip 17, so that frame sheet metals 100 of different sizes can be clamped and positioned.

[0062] It should be noted that a tension spring sleeved on the insertion rod 18 is provided in the insertion hole 19. Under the elastic drive of the tension spring, the first limit strip 17 will be close to the first bottom positioning strip 13, and the frame sheet metal 100 will be elastically clamped according to the size of the frame to prevent the frame from lateral displacement and improve the clamping stability.

[0063] The top positioning mechanism 2 includes a first supporting column 21 arranged longitudinally, the first supporting column 21 is equipped with a first swing seat 22 capable of swinging longitudinally, the driving end of the first swing seat 22 is equipped with a first swing bar 23 capable of swinging longitudinally, and the end of the first swing bar 23 is equipped with a top pressing seat 24 arranged longitudinally; the top pressing seat 24 is equipped with a conical seat 30 for pressing the hole position in the frame and a clamping mechanism 3 for driving the conical seat 30 to clamp the frame, and the conical seat 30 can be inserted into the hole position of the frame. The first swing seat 22 swings longitudinally on the first supporting column 21, and the first swing bar 23 connected to the first swing seat 22 can swing longitudinally accordingly, and the frame sheet metal 100 is pressed by the top pressing seat 24. When pressed, the conical seat 30 can be inserted into the hole position of the frame, and the clamping mechanism 3 located at the conical seat 30 can work to clamp the frame, so that the frame is connected to the top positioning mechanism 2 to achieve positioning.

[0064] Specifically, the first swing seat 22 is provided with a first fulcrum 27, a first driving point 28 and a first driven point 29, and the first swing bar 23 is provided with a second fulcrum, a second driving point and a second driven point, wherein the driven point of the first swing seat 22 is rotationally connected to the second fulcrum of the first swing bar 23; the first supporting column 21 is arranged with a first top telescopic cylinder 25, and the driving end of the first top telescopic cylinder 25 is rotationally connected to the first driven point 29, and the first swing seat 22 is installed with a second laterally arranged second top telescopic cylinder 26, and the driving end of the second top telescopic cylinder 26 is rotationally connected to the second fulcrum. When the frame needs to be pressed, the first top telescopic cylinder 25 works, and the first swing seat 22 swings longitudinally around the first fulcrum 27; it can drive the first swing bar 23 to move longitudinally to achieve height adjustment, and then the second top telescopic cylinder 26 installed on the first swing seat 22 can drive the first swing bar 23 to rotate longitudinally around the second fulcrum of the first swing bar 23; the front and rear positions can be adjusted; with the cooperation of the first top telescopic cylinder 25 and the second top telescopic cylinder 26, the top pressure seat 24 installed at the end of the first swing bar 23 can be fine-tuned front and back and up and down, so that the hole position at the top of the frame sheet metal 100 can be pressed more accurately, the top of the frame can be positioned and pressed, and the frame can be prevented from shifting, and the positioning is more stable.

[0065] Further, in the specific clamping mechanism 3, the conical seat 30 is a cylindrical structure, the bottom of the conical seat 30 is a cone structure, the clamping mechanism 3 includes a first movable member and a second movable member located in the conical seat 30, the first movable member and the second movable member are arranged axially at intervals along the conical seat 30, the first movable member includes a first positioning block 31 that moves outwardly along the conical seat 30 radially, the second movable member includes a second positioning block 32 that is stretched outwardly along the conical seat 30 radially, the first positioning block 31 and the second positioning block 32 are both capable of clamping the frame; the longitudinal distance between the first positioning block 31 and the second positioning block 32 is exactly equal to the thickness of the frame sheet metal 100. The outer ring wall of the conical seat 30 is formed with a plurality of first movable grooves 33 for radial movement of the first positioning block 31 and second movable grooves 34 for radial movement of the second positioning block 32. During clamping, the conical seat 30 is inserted into the hole of the frame until the first movable member is located at the top of the frame and the second movable member is located at the bottom of the frame. The first movable member and the second movable member work, and the first positioning block 31 and the second positioning block 32 move radially along the first movable groove 33 and the second movable groove 34 respectively and simultaneously; the first positioning block 31 is located at the bottom of the second positioning block 32, the top of the first positioning block 31 will support the bottom of the frame hole, and the second positioning block 32 will press the top of the frame hole, thereby achieving clamping; at this time, the frame will not shift longitudinally or radially, and the positioning stability is further improved.

[0066] A rotating shaft 35 and a rotating sleeve 36 coaxially nested in the rotating shaft 35 are installed in the conical seat 30, a fixed plate 4 is installed at the bottom of the rotating shaft 35, and a plurality of first guide columns 41 are provided on the fixed plate 4. A plurality of first sliding seats 42 are provided in the conical seat 30, and the first sliding seat 42 is formed with a first long groove 43 that is slidably matched with the first guide column 41, and the first positioning block 31 is formed at the outer end of the first sliding seat 42; when the rotating shaft 35 rotates, the first guide column 41 revolves around the rotating shaft 35 accordingly, the first long groove 43 of the first sliding seat 42 will slidably match with the first guide column 41, and the first sliding seat 42 formed with the first positioning block 31 will slide out radially outward; when the rotating shaft 35 is reversed, the first sliding seat 42 formed with the first positioning block 31 will slide in radially inward, thereby realizing the radial movement of the first movable part. A plurality of second guide posts 44 are installed at the bottom of the rotating sleeve 36, and a plurality of second sliding seats 45 are arranged in the conical seat 30. The second sliding seat 45 is formed with a second long groove 46 which is slidably matched with the second guide post 44, and the second positioning block 32 is formed at the outer end of the second sliding seat 45; when the rotating sleeve 36 rotates, the second guide post 44 revolves around the rotating sleeve 36 accordingly, and the second long groove 46 of the second sliding seat 45 will slidably match with the second guide post 44, and the second sliding seat 45 formed with the second positioning block 32 will slide out radially outward; when the rotating sleeve 36 is reversed, the second sliding seat 45 formed with the second positioning block 32 will slide in radially inward, thereby realizing the radial movement of the second movable part.

[0067] A plane plate 40 is formed inside the conical seat 30, and a rotating hole 47 is formed on the plane plate 40 for the rotating shaft 35 to pass through. A first guide groove 48 is formed at the bottom of the plane plate 40, and a second guide groove 49 is formed at the top of the plane plate 40. The first sliding seat 42 moves radially along the first guide groove 48 in the conical seat 30, and the second sliding seat 45 moves radially along the second guide groove 49 in the conical seat 30; so that the first sliding seat 42 and the second sliding seat 45 can slide in the guide area, the first positioning block 31 and the second positioning block 32 move outward and retract inward at equal distances respectively, and the movement stroke is basically the same, and the frame sheet metal 100 is subjected to relatively uniform force.

[0068] In one embodiment, the rotating shaft 35 and the rotating sleeve 36 rotate independently, the rotating shaft 35 is embedded with a first rolling bearing 37, and the rotating sleeve 36 is embedded with a second rolling bearing 38. The first rolling bearing 37 and the second rolling bearing 38 are coaxially arranged, wherein the first rolling bearing 37 is arranged between the rotating sleeve 36 and the rotating shaft 35, and the second rolling bearing 38 is arranged between the conical seat 30 and the rotating sleeve 36. When the rotating shaft 35 and the rotating sleeve 36 rotate, they are separated by the interval of the first rolling bearing 37 and the second rolling bearing 38, and the rotating shaft 35 and the rotating sleeve 36 do not affect each other during rotation; when it is only necessary to press down the frame sheet metal 100; it is only necessary to move the first movable member radially outward, and after the first positioning block 31 is radially extended, it will be larger than the diameter of the frame hole. Therefore, when the conical seat 30 descends, the frame sheet metal 100 is pressed down by a plurality of first positioning blocks 31 arranged in an annular shape to achieve press-fit positioning.

[0069] In one of the embodiments, the rotating shaft 35 and the rotating sleeve 36 rotate simultaneously, and the rotating shaft 35 and the rotating sleeve 36 are engaged with each other. When clamping, the conical seat 30 is inserted into the hole of the frame until the first movable member is located at the top of the frame and the second movable member is located at the bottom of the frame. The first movable member and the second movable member work simultaneously, and the first positioning block 31 and the second positioning block 32 move radially along the first movable groove 33 and the second movable groove 34 respectively; the first positioning block 31 is located at the bottom of the second positioning block 32, the top of the first positioning block 31 will support the bottom of the frame hole, and the second positioning block 32 will press the top of the frame hole, thereby achieving clamping; at this time, the frame will not shift longitudinally or radially, and the positioning stability is further improved.

[0070] The rotating shaft 35 and the rotating sleeve 36 are driven by different powers respectively. The rotating shaft 35 is embedded with a first connecting rod, and the top of the rotating sleeve 36 is embedded with a second connecting rod. Different telescopic cylinders are used as power sources respectively, one of which is transmission-connected with the first connecting rod, and the other is transmission-connected with the second connecting rod. Under the drive of the telescopic cylinder, the first connecting rod and the second connecting rod swing respectively, so that the rotating shaft 35 and the rotating sleeve 36 can rotate, so that the first movable member and the second movable member move independently in the radial direction of the finger seat.

[0071] The top positioning mechanism 2 also includes a second supporting column 5 arranged longitudinally, on which a second pressure strip 6 capable of longitudinal swinging is installed, and a plurality of inclined pressing blocks 63 arranged obliquely are installed at the bottom of the second pressure strip 6, and the inclined pressing blocks 63 can be installed on the second pressure strip 6 at a changing inclination angle; a supporting driving seat 50 is installed on the side of the second supporting column 5, and there will be an inclined surface at the top of the frame sheet metal 100. The second pressure strip 6 can be swung longitudinally to press down the inclined pressing blocks 63, thereby matching and pressing down the inclined surface at the top of the frame sheet metal 100 to ensure that it is a plane when in contact, and the stability of the downward pressure is better.

[0072] Furthermore, an inclined support seat 51 for adjusting the inclination angle of the support drive seat 50 is provided between the support drive seat 50 and the second support column 5. The cross section of the inclined support seat 51 is a right-angled trapezoid; the vertical surface of the inclined support seat 51 is fixedly connected to the side surface of the second support column 5, and the inclined surface of the inclined support seat 51 is connected to the support drive seat 50; the support drive seat 50 can be installed obliquely on the second support column 5 by supporting the inclined support seat 51 with a right-angled trapezoidal cross section, and accordingly, the second pressure strip 6 installed on the support drive seat 50 will tilt left and right, and the inclined pressing block 63 can be tilted accordingly to press down the inclined surface of the top of the frame to position it.

[0073] Furthermore, a connection structure is provided between the inclined surface of the inclined support seat 51 and the support drive seat 50. The inclined support seat 51 includes a longitudinal plate 52 and an inclined plate 53 hinged to the longitudinal plate 52 in a lateral swinging manner; the top of the inclined plate 53 and the top of the longitudinal plate 52 are hinged by a hinge, thereby ensuring the stability of the hinge. The inner side walls of the inclined plate 53 and the longitudinal plate 52 are respectively formed with coaxially arranged semicircular grooves 54; the second support column 5 is equipped with a rotatable driving rod 55, the driving rod 55 is coaxially aligned with the semicircular groove 54, and the driving rod 55 can longitudinally move to open the longitudinal plate 52 and the inclined plate 53 to adjust the inclination angle of the inclined plate 53. When the inclination angle of the inclined plate 53 needs to be adjusted, the driving rod 55 is rotated, and the driving rod 55 can be lifted and lowered in the axial direction of the semicircular groove 54 to open the longitudinal plate 52 and the inclined plate 53 to achieve angle change.

[0074] Furthermore, a pointed structure capable of spreading the longitudinal plate 52 and the inclined plate 53 is formed on the top of the driving rod 55, a guide rack 56 is installed on the lower half of the driving rod 55 along the length direction, a guide sleeve 57 and a driving gear 58 capable of rotatably meshing with the guide rack 56 are installed on the second supporting column 5, and a part of the driving rod 55 is coaxially slidably matched with the guide sleeve 57; the driving gear 58 rotates under the drive of the servo motor, so that the driving gear 58 meshes with the guide rack 56 for transmission, and the driving rod 55 can move longitudinally along the guide sleeve 57; when the driving rod 55 is raised, the longitudinal plate 52 and the inclined plate 53 can be spread apart by the pointed structure formed on the top of the driving rod 55 to adjust the inclination angle of the inclined plate 53; conversely, when the driving rod 55 is lowered, the angle between the longitudinal plate 52 and the inclined plate 53 decreases, and the inclination of the inclined plate 53 decreases. The inclination of the second pressure strip 6 installed on the inclined plate 53 changes accordingly, so that different inclined surfaces can be pressed down for positioning without replacing the second pressure strip 6, and the practicality is further improved.

[0075] Furthermore, the second pressure bar 6 includes a driving bar 61 capable of longitudinal swinging and a rotating bar 62 connected to the driving bar 61, the inclined pressure block 63 is installed on the rotating bar 62, the rotating bar 62 is formed with a center hole 64 along the length direction, a center shaft 65 is sleeved in the center hole 64, and one end of the center shaft 65 is fixedly connected to the driving bar 61; a plurality of guide sleeves arranged in an annular shape are installed at the outer ring of the driving bar 61, and a movable shaft 66 is movablely sleeved in the guide sleeve; the driving bar 61 is formed with a plurality of positioning holes 67 located on the periphery of the center shaft 65, and the positioning holes 67 are coaxially aligned with the movable shaft 66 and For the movable shaft 66 to be inserted; the rotating bar 62 can be rotatably matched with the central axis 65 of the driving bar 61 through the central hole 64. Before rotation, the movable shaft 66 is axially pulled out from the positioning hole 67, and then the rotating bar 62 can be rotated around the central axis 65. After rotating to the required angle, the movable shaft 66 will be coaxially matched with the remaining positioning holes 67, and then the movable shaft 66 continues to move axially along the guide sleeve and is inserted into the positioning hole 67 to realize the positioning of the rotating bar 62, prevent the rotating bar 62 from becoming loose after rotation adjustment, and can further adjust the inclination of the tilting pressure block 63.

[0076] By means of the connection structure provided between the inclined surface of the tilting support seat 51 and the supporting drive seat 50 and the rotational connection between the driving bar 61 and the rotating bar 62, the rotation adjustment method of the rotating bar 62 is diversified, the adjustable tilt angle mode is diversified, and the tilting pressing block 63 can be fine-tuned, thereby further improving the accuracy of the pressing and positioning of the tilting pressing block 63 on the inclined surface of the frame sheet metal 100, and the pressing stability is further improved.

[0077] The positioning machine base 1 is also provided with a cooling mechanism 7, which includes a nozzle module 70. The nozzle module 70 includes a cooling nozzle 71 located at the top of the positioning machine base 1 and a nozzle seat 72 for installing the cooling nozzle 71. The cooling nozzle 71 can spray coolant toward the bottom of the frame welding part; the positioning machine base 1 is provided with a plurality of first sliding grooves 73 arranged parallel to each other and spaced apart along the width direction, the number of the nozzle modules 70 is the same as the number of the first sliding grooves 73, and each first sliding groove 73 is arranged with a nozzle module 70; the first sliding groove 73 is arranged with a connecting cylinder 75 for connecting with the nozzle seat 72; the cooling nozzle 71 passes through the first sliding groove 73, and the opening of the cooling nozzle 71 is arranged tilted upward; when one or more areas of the frame sheet metal 100 are welded, the nozzle seat 72 will move accordingly, so that the cooling nozzle 71 is close to the welding part, and coolant can be sprayed on the welding part to quickly cool down the welding part to prevent the frame sheet metal 100 from deforming due to excessive temperature. Furthermore, since the cooling nozzle 71 cooperates with the nozzle seat 72 to be located in the positioning machine base 1, the space above will not be occupied, and the space of the positioning machine base 1 can be reasonably utilized, while the welding position can be cooled quickly and accurately.

[0078] Furthermore, a driving cavity 81 is formed in the positioning machine base 1, and a movable driving member is arranged in the driving cavity 81 to drive the nozzle seat 72 to move along the first sliding groove 73; the movable driving member includes a guide rail member 82 arranged coaxially with the length direction of the first sliding groove 73, and a linear module 83 arranged parallel to the guide rail member 82, and the driving end of the linear module 83 is connected to the nozzle seat 72; a movable seat 84 slidingly matched with the guide rail member 82 is installed at the bottom of the nozzle seat 72, and when the driving end of the linear module 83 moves, it can drive the nozzle seat 72 to move along the length direction of the guide rail member 82, and the cooling nozzle 71 installed on the nozzle seat 72 can move along the first sliding groove 73 to the welding position, and spray coolant toward the welding position for cooling. It should be noted that the nozzle seat 72 has a built-in cooling cavity, and the cooling cavity is sealed and connected to a water cooling pipe, and the water cooling pipe is arranged in a curved manner. When the nozzle seat 72 moves, the water cooling pipe will not break.

[0079] The nozzle seat 72 is provided with an angle adjustment component that drives the cooling nozzle 71 to rotate. The angle adjustment component includes a cooling outlet 74 opened at the top of the nozzle seat 72. The bottom of the connecting tube 75 is rotatably connected to the cooling outlet 74; the connecting tube 75 is coaxially sleeved with a first synchronous wheel 76, and the nozzle seat 72 is installed with a second synchronous wheel 77 arranged flush with the first synchronous wheel 76. A synchronous belt 78 is driven between the first synchronous wheel 76 and the second synchronous wheel 77. The nozzle seat 72 is provided with a power battery and a servo motor electrically connected to the power battery. The driving force of the servo motor The first end is connected to the second synchronous wheel 77 in transmission connection, thereby driving the first synchronous wheel 76 and the second synchronous wheel 77 to rotate to realize transmission; when the cooling nozzle 71 is not directed toward the welding area, the angle adjustment can be achieved through the angle adjustment component; with the cooperation of the first synchronous wheel 76 and the second synchronous wheel 77 and the synchronous belt 78, the connecting tube 75 installed at the cooling outlet 74 can rotate; since the opening of the cooling nozzle 71 is arranged tilted upward, the cooling nozzle 71 can spray coolant in multiple directions according to needs, and spray coolant to cool different welding places.

[0080] Furthermore, the positioning base 1 is provided with a temperature control system 8, which includes a plurality of temperature sensors 85 arranged on the top of the positioning base 1, and the temperature sensor 85 can monitor the temperature nearby in real time. The guide rail 82 is provided with a plurality of distance sensors 86 arranged at intervals along the length direction, and the driving end of the linear module 83 is provided with a sensing sheet 87 that is inductively matched with the distance sensor 86; the temperature sensor 85 is connected to the distance sensor 86 for signal, and the temperature sensor 85 is connected to the linear module 83 for signal.

[0081] The temperature control system 8 also includes a control board, and the temperature sensor 85, the distance sensor 86, the linear module 83 and the servo motor are all connected to the control board signal. The engineer programs the temperature sensor 85, the distance sensor 86, the linear module 83 and the servo motor. When a high temperature is generated at a welding point near one of the temperature sensors 85, the temperature sensor 85 will send a pulse signal to the input end of the control board, and the control board outputs the signal to the linear module 83, the servo motor and the distance sensor 86, among which the distance sensor 86 closest to the temperature sensor 85 receives the pulse signal. The linear module 83 can drive the nozzle seat 72 to move, and after the induction sheet 87 and the distance sensor 86 are inductively matched, the linear module 83 stops moving. At this time, the servo motor can work, and the angle adjustment component is used to adjust the direction of the cooling nozzle 71 so that it is more accurately oriented to the welding point.

[0082] According to the temperature control system 8 including the temperature sensor 85, the temperature of the welding point can be automatically identified. The temperature sensors 85 are respectively arranged in a plurality of temperature zones. Each temperature zone cooperates with the linear module 83 and the nozzle seat 72. The welding point of each temperature zone can be sprayed with coolant by the cooling nozzle 71 to achieve cooling. No manual operation is required, the intelligence is improved, and the degree of automation is high.

[0083] In summary, it can be seen that the present invention has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0084] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A new energy vehicle frame welding positioning mold, comprising a positioning machine base, the positioning machine base is provided with a bottom positioning mechanism for lifting and positioning the bottom of the frame and a top positioning mechanism for pressing and positioning the top of the frame, characterized in that: The bottom positioning mechanism comprises a support base, the support base is equipped with a bottom support frame capable of longitudinal movement, the bottom support frame is equipped with a plurality of first bottom positioning strips and second bottom positioning strips, wherein the first bottom positioning strips are arranged obliquely, and the ends of the first bottom positioning strips are formed with first limiting strips arranged longitudinally; the second bottom positioning strips are arranged in a curved manner; The first bottom positioning strip is formed with a positioning adjustment groove along the length direction, the positioning adjustment groove has a bottom positioning block slidably mounted thereon with damping, and the bottom positioning block is formed with a positioning contact seat that can be movably raised or recessed; an insertion rod is formed on the side of the first limit strip, and the first bottom positioning strip is formed with an insertion hole for guiding the insertion rod; The positioning machine base is also provided with a cooling mechanism, which includes a nozzle module, the nozzle module includes a cooling nozzle located at the top of the positioning machine base and a nozzle seat for installing the cooling nozzle, the opening of the cooling nozzle is arranged tilted upward, and the cooling nozzle can spray coolant toward the bottom of the frame welding part; the positioning machine base is provided with a plurality of first sliding grooves arranged parallel to each other and spaced apart along the width direction, the number of the nozzle modules is the same as the number of the first sliding grooves, and each first sliding groove is provided with a nozzle module; the first sliding groove is provided with a connecting cylinder for connecting with the nozzle seat; A driving cavity is formed in the positioning machine base, and a movable driving member for driving the nozzle seat to move along the first sliding groove is arranged in the driving cavity; the movable driving member includes a guide rail member coaxially arranged in the length direction of the first sliding groove, and a linear module arranged parallel to the guide rail member, and the driving end of the linear module is connected to the nozzle seat; the nozzle seat is provided with an angle adjustment component for driving the cooling nozzle to rotate, and the angle adjustment component includes a cooling outlet opened at the top of the nozzle seat, and the bottom of the connecting tube is rotatably connected to the cooling outlet; the connecting tube is coaxially sleeved with a first synchronous wheel, and the nozzle seat is equipped with a second synchronous wheel arranged flush with the first synchronous wheel, and a synchronous belt is transmission-sleeved between the first synchronous wheel and the second synchronous wheel.

2. A new energy vehicle frame welding positioning mold according to claim 1, characterized in that: The top positioning mechanism includes a first longitudinally arranged supporting column, the first supporting column is equipped with a first swinging seat capable of longitudinally swinging, the driving end of the first swinging seat is equipped with a first swinging bar capable of longitudinally swinging, and the end of the first swinging bar is equipped with a longitudinally arranged top pressure seat; the top pressure seat is equipped with a conical seat for pressing the hole position in the frame and a clamping mechanism for driving the conical seat to clamp the frame, and the conical seat can be inserted into the hole position of the frame.

3. A new energy vehicle frame welding positioning mold according to claim 2, characterized in that: The first swing seat is provided with a first fulcrum, a first driving point and a first driven point, and the first swing bar is provided with a second fulcrum, a second driving point and a second driven point, wherein the driven point of the first swing seat is rotationally connected to the second fulcrum of the first swing bar; the first supporting column is arranged with a first top telescopic cylinder, and the driving end of the first top telescopic cylinder is rotationally connected to the first driven point, and the first swing seat is installed with a second laterally arranged second top telescopic cylinder, and the driving end of the second top telescopic cylinder is rotationally connected to the second fulcrum.

4. A new energy vehicle frame welding positioning mold according to claim 3, characterized in that: The conical seat is installed with a first movable part and a second movable part, and the first movable part and the second movable part are arranged at intervals along the axial direction of the conical seat. The first movable part includes a first positioning block that moves outward along the radial movement of the conical seat, and the second movable part includes a second positioning block that is spread outward along the radial movement of the conical seat. Both the first positioning block and the second positioning block can clamp the frame; the outer ring wall of the conical seat is formed with a plurality of first movable grooves for radial movement of the first positioning block and second movable grooves for radial movement of the second positioning block.

5. A new energy vehicle frame welding positioning mold according to claim 4, characterized in that: A rotating shaft and a rotating sleeve coaxially nested in the rotating shaft are installed in the conical seat, and the rotating shaft and the rotating sleeve rotate independently; a fixed plate is installed at the bottom of the rotating shaft, and a plurality of first guide columns are provided on the fixed plate, and a plurality of first sliding seats are provided in the conical seat, the first sliding seat is formed with a first long groove that slidably cooperates with the first guide column, and a first positioning block is formed at the outer end of the first sliding seat; a plurality of second guide columns are installed at the bottom of the rotating sleeve, and a plurality of second sliding seats are provided in the conical seat, the second sliding seat is formed with a second long groove that slidably cooperates with the second guide column, and the second positioning block is formed at the outer end of the second sliding seat; a plane plate is formed in the conical seat, and the plane plate is formed with a rotating hole for the rotating shaft to pass through, a first guide groove is formed at the bottom of the plane plate and a second guide groove is formed at the top of the plane plate, the first sliding seat moves radially in the conical seat along the first guide groove, and the second sliding seat moves radially in the conical seat along the second guide groove.

6. A new energy vehicle frame welding positioning mold according to claim 5, characterized in that: The top positioning mechanism also includes a second supporting column arranged longitudinally, the second supporting column is equipped with a second pressure strip that can swing longitudinally, a plurality of inclined pressure blocks arranged obliquely are installed at the bottom of the second pressure strip, and the inclined pressure blocks can be installed on the second pressure strip with a changing inclination angle; a supporting drive seat is installed on the side of the second supporting column, and an inclined supporting seat for adjusting the inclination angle of the supporting drive seat is arranged between the supporting drive seat and the second supporting column.

7. A new energy vehicle frame welding positioning mold according to claim 6, characterized in that: The cross-section of the inclined support seat is a right-angled trapezoid; the vertical surface of the inclined support seat is fixedly connected to the side surface of the second supporting column, and the inclined surface of the inclined support seat is connected to the supporting driving seat; a connecting structure is arranged between the inclined surface of the inclined support seat and the supporting driving seat, and the inclined support seat includes a longitudinal plate and an inclined plate hinged to the longitudinal plate in a transverse swinging manner; the inner side walls of the inclined plate and the longitudinal plate are respectively formed with coaxially arranged semicircular grooves; the second supporting column is equipped with a rotatable driving rod, the driving rod is coaxially aligned with the semicircular groove, and the driving rod can longitudinally move the longitudinal plate and the inclined plate to open each other to adjust the inclination angle of the inclined plate.

8. A new energy vehicle frame welding positioning mold according to claim 7, characterized in that: The top of the driving rod is formed with a pointed structure that can prop open the longitudinal plate and the inclined plate. The lower half of the driving rod is equipped with a guide rack along the length direction. The second supporting column is equipped with a guide sleeve and a driving gear that can rotatably engage with the guide rack for transmission. A part of the driving rod is coaxially slidably matched with the guide sleeve.

9. A new energy vehicle frame welding positioning mold according to claim 7, characterized in that: The second pressure strip includes a driving strip capable of longitudinally swinging and a rotating strip connected to the driving strip, wherein the rotating strip is formed with a center hole along the length direction, a center shaft is sleeved in the center hole, and one end of the center shaft is fixedly connected to the driving strip; a plurality of guide sleeves arranged in a ring shape are installed at the outer ring of the driving strip, and a movable shaft is movable sleeved in the guide sleeve; a plurality of positioning holes are formed on the driving strip and are located on the periphery of the center shaft, and the positioning holes are coaxially aligned with the movable shaft and are for the movable shaft to be inserted into.

10. A new energy vehicle frame welding positioning mold according to claim 9, characterized in that: A plurality of temperature sensors are arranged on the top of the positioning machine base, a plurality of distance sensors are arranged at intervals along the length direction of the guide rail, and a sensing sheet which cooperates with the distance sensor is installed on the driving end of the linear module; the temperature sensor is connected to the distance sensor signal, and the temperature sensor is connected to the linear module signal.

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