Welding tool for carriage processing and use method

Abstract

The present invention relates to the technical field of carriage welding, and specifically to a welding tool for carriage processing and a method of using the tool, comprising a base, the rear side of which is fixedly connected with a vertical frame. The welding tool for carriage processing and the method of using the tool drive the first wire wheel and the second wire wheel on the lower side to rotate through the first steel cable and the second steel cable, and then push the lower sliding sleeve and the lower extension arm to automatically pop out, and the amount of pop-out is equal to that of the upper sliding sleeve and the upper extension arm, that is, the passive positioning ring is in the horizontal mirror position of the active positioning ring. Compared with the existing welding tool with a single fixing function, the active positioning ring cooperates with the passive positioning ring, and can automatically locate the mirror point on the back of the carriage plate after the operator locates the welding point on the front of the carriage plate. For parts that need to be symmetrically welded along the carriage plate, there is no need for the user to manually measure and position, and accurate symmetrical welding effect is guaranteed, which greatly improves the efficiency of welding operations.

Description

Technical Field

[0001] The invention relates to the technical field of carriage welding, and in particular to a welding tool for carriage processing and a use method thereof. Background Art

[0002] The carriages of some existing small and medium-sized trucks are assembled from several carriage panels. In the production and processing of the carriage, the carriage panels are usually processed first and then assembled together. The carriage panels are often provided with multiple parts, which are usually fixed to the carriage panels by welding. When welding parts to the carriage panels, the carriage panels are first fixed on a welding table and then welded one by one.

[0003] The existing patent (publication number: CN112809292B) discloses a welding tool for carriage processing, including a base, a support plate installed on the base, the support plate connected to a fixing frame, a movable block inside the fixing frame, and the movable block connected to a connecting block. The fixing point of the above-mentioned prior art is located on the side of the carriage plate, the welding area lacks support, and manual positioning is required for double-sided welding, which has poor efficiency and accuracy.

[0004] In view of this, we propose a welding tool for carriage processing and a use method. Summary of the invention

[0005] The purpose of the present invention is to provide a welding tool for car body processing and a method of use, so as to solve the problems in the prior art proposed in the above background technology that the fixing point is located on the side of the car body plate, the welding area lacks support, and manual positioning is required for double-sided welding, resulting in poor efficiency and accuracy. In order to achieve the above purpose, the present invention provides the following technical solutions: a welding tool for car body processing, comprising a base, a vertical frame is fixedly connected to the rear side of the base, and an operating table is fixedly installed on the vertical frame, a slot for inserting the car body plate is opened on the front side of the surface of the operating table, and a fixing bolt matching the slot is threadedly connected to the operating table.

[0006] A double-sided positioner is arranged on the operating table.

[0007] The double-sided positioner includes a rotating shaft rotatably arranged on the operating table, and the two ends of the rotating shaft respectively pass through the top surface and the bottom surface of the operating table, the sides of the two ends of the rotating shaft are fixedly connected with swing arms, and the inside of the swing arm is slidably connected with a sliding sleeve, and the inside of the sliding sleeve is slidably connected with an extension arm, the upper end of the extension arm away from the sliding sleeve is fixedly connected with an active positioning ring, and the lower end of the extension arm away from the sliding sleeve is fixedly connected with a passive positioning ring.

[0008] The upper and lower swing arms are each provided with a first circular groove connected to the interior thereof, and a first wire wheel is rotatably connected in the first circular groove; the upper and lower swing arms and the rotating shaft are each provided with a first wire hole, and both ends of the first wire hole are respectively connected to the upper and lower first circular grooves; a first steel cable is movably arranged in the first wire hole, and the upper end of the first steel cable is fixedly connected to the upper first wire wheel, and the lower end of the first steel cable is fixedly connected to the lower first wire wheel after being wound around it.

[0009] A driving gear is fixedly arranged on the first wire wheel, and the side surfaces of the sliding sleeves on the upper and lower sides are both provided with first tooth surfaces meshing with the driving gear on the same side.

[0010] The upper and lower sleeves are each provided with a second circular groove connected to the interior thereof, and a second wire wheel is rotatably connected in the second circular groove, and second wire holes are each provided in the upper and lower sleeves and the rotating shaft, and both ends of the second wire holes are respectively connected to the upper and lower second circular grooves, a second steel cable is movably arranged in the second wire hole, and the upper end of the second steel cable is fixedly connected to the upper second wire wheel, and the lower end of the second steel cable is wound around the lower second wire wheel and fixedly connected to it.

[0011] A driving gear is also fixedly arranged on the second wire wheel, and the side surfaces of the extension arms on the upper and lower sides are both provided with second tooth surfaces meshing with the driving gear on the same side.

[0012] Fixed-point support components are arranged on the active positioning ring, the passive positioning ring, the extension arm, the swing arm and the rotating shaft.

[0013] Preferably, the fixed-point support assembly includes an axis groove opened inside the rotating shaft, and the interior of the axis groove is rotatably connected to a transmission shaft, the interior of the swing arm is rotatably connected to a sub-shaft, and one end of the sub-shaft passes through the axis groove, and the passing end of the sub-shaft and the end of the transmission shaft are fixedly connected with mutually meshing bevel gears.

[0014] The extension arm is internally rotatably connected with an external shaft, and the surfaces of the external shaft and the sub-shaft are provided with teeth, and the external shaft and the sub-shaft are staggeredly meshed through the teeth.

[0015] The ends of the circumscribed shafts on the upper and lower sides away from the split shafts respectively penetrate the active positioning ring and the passive positioning ring, and the penetrating ends of the circumscribed shafts are fixedly connected with transmission gears.

[0016] An upper pressure ring is movably arranged inside the active positioning ring, and a threaded seat is fixedly arranged at the bottom of the active positioning ring, and the active positioning ring is threadedly connected along the threaded seat.

[0017] The surface of the upper pressure ring is rotatably connected to a rotating ring, and the bottom of the rotating ring is fixedly connected to a rack. A vertical groove for the rack to move up and down is opened on the inner side of the active positioning ring, and the rack is meshed with the upper transmission gear in the vertical groove.

[0018] The passive positioning ring is slidably connected with a lower pressing ring inside, and a side surface of the lower pressing ring is provided with a tooth groove meshing with a lower transmission gear.

[0019] The rotating shaft and the operating table are provided with a drawing comparison component.

[0020] Preferably, the drawing comparison assembly includes a comparison arm fixedly mounted on the side surface of the rotating shaft, and the comparison arm and the swing arm are symmetrically distributed along the rotating shaft, a fan groove for the comparison arm to swing is provided on the operating table, and a drawing tray matching the comparison arm is fixedly connected to the rear side of the operating table surface.

[0021] The interior of the comparison arm is slidably connected with a telescopic rod, and the outer end of the telescopic rod is fixedly connected with a comparison positioning ring matched with the drawing tray.

[0022] An air cavity is opened inside the rotating shaft, and a seesaw is rotatably connected inside the air cavity. Air bags matching the seesaw are fixedly arranged on the upper and lower sides of the air cavity. The upper air bag is connected to the inside of the swing arm, and the lower air bag is connected to the inside of the control arm.

[0023] Preferably, a caliper matched with a fixing bolt is slidably connected in the slot, and a tension spring is provided between the caliper and the slot.

[0024] Preferably, magnetic rings are fixedly provided on the inner sides of the lower pressure ring and the upper pressure ring.

[0025] Preferably, rubber rings are fixedly provided on opposite sides of the upper pressure ring and the lower pressure ring.

[0026] Preferably, a spring buckle is provided on the drawing tray.

[0027] A method for using a welding tool for carriage processing comprises the following steps:

[0028] S1. Install the carriage plate along the slot and fix it with fixing bolts;

[0029] S2, push the upper swing arm to rotate through the rotating shaft. During this process, the extension arm is pulled out along the swing arm and the sliding sleeve, so that the active positioning ring is aligned with the welding area on the upper surface of the car body plate. When the upper swing arm is deflected, the lower swing arm moves synchronously with the rotating shaft, and when the upper sliding sleeve and the upper extension arm are pulled out, the first tooth surface and the second tooth surface respectively drive the first wire wheel and the second wire wheel to rotate along the same side driving gear, and the first steel cable and the second steel cable are used to drive the first wire wheel and the second wire wheel on the lower side to rotate, and then the lower sliding sleeve and the lower extension arm are pushed to automatically pop out, and the pop-out amount is equal to that of the upper sliding sleeve and the upper extension arm, that is, the passive positioning ring is in the horizontal mirror image position of the active positioning ring;

[0030] S3. After the active positioning ring and the passive positioning ring are positioned, the upper pressure ring is rotated to move down along the threaded seat. During this process, the rack moves down synchronously and drives the upper transmission gear and the upper split shaft to rotate. The lower split shaft is driven to rotate via the bevel gear and the transmission shaft, and then the lower transmission gear is used to push the lower pressure ring up along the tooth groove;

[0031] S4. Place the plane drawing on the drawing tray. When the swing arm is deflected by the rotating shaft, the control arm is deflected synchronously, and when the sliding sleeve and the extension arm are pulled out, negative pressure is generated inside the swing arm, and the upper airbag contracts, causing the rocker to deflect and squeeze the lower airbag, and gas is injected into the control arm to push out the telescopic rod and the control positioning ring, so that the position of the active positioning ring on the car body plate is proportionally reflected on the drawing.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] In the present invention, the first steel cable and the second steel cable are used to drive the first wire wheel and the second wire wheel on the lower side to rotate, and then push the lower sliding sleeve and the lower extension arm to pop out automatically, and the pop-up amount is equal to that of the upper sliding sleeve and the upper extension arm, that is, the passive positioning ring is in the horizontal mirror position of the active positioning ring. Compared with the existing welding tooling with a single fixed function, the above-mentioned active positioning ring cooperates with the passive positioning ring to automatically locate the mirror point on the back of the car body plate after the operator locates the welding point on the front side of the car body plate. For parts that need to be symmetrically welded along the car body plate, there is no need for the user to manually measure and position, and accurate symmetrical welding effect is guaranteed, which greatly improves the welding operation efficiency.

[0034] In the present invention, the upper pressure ring is rotated to move downward along the threaded seat. During this process, the rack moves downward synchronously and pushes the upper transmission gear and the upper sub-shaft to rotate. The lower sub-shaft is driven to rotate via the bevel gear and the transmission shaft. Then, the lower transmission gear is used to push the lower pressure ring upward along the tooth groove. Compared with the existing fixation along the edge of the car body plate, the bracket composed of the lower sliding sleeve and the lower extension arm can be supported by the lower pressure ring along the lower side of the welding area to accurately support the car body plate, thereby reducing the weight change caused by the welding process and the damage to the car body plate along the fixed point. On the other hand, the upper pressure ring and the lower pressure ring with relative displacement can press the parts to be welded on the car body plate. The operator only needs to perform the welding operation without holding the parts separately, which can effectively facilitate the welding operation.

[0035] In the present invention, the swing arm is synchronously deflected by the reference arm, and when the sliding sleeve and the extension arm are pulled out, negative pressure is generated inside the swing arm, the upper airbag contracts, the rocker is deflected and squeezes the lower airbag, and gas is injected into the reference arm to push out the telescopic rod and the reference positioning ring, so that the position of the active positioning ring on the car body plate is proportionally reflected on the drawing. Compared with the existing manual positioning of the welding position by the naked eye, the above-mentioned reference arm can use the rotating shaft and air pressure to control the telescopic rod, and cooperate with the reference positioning ring to mark it on the drawing. The operator can quickly operate the active positioning ring on the drawing according to the reference positioning ring. On the one hand, the welding point can be found quickly, which improves the welding operation efficiency. On the other hand, the welding point is positioned accurately, which improves the welding qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the three-dimensional structure of the operating table and the swing arm of the present invention;

[0038] Figure 3 It is a three-dimensional structural cross-sectional view of the operating table of the present invention;

[0039] Figure 4 It is a schematic diagram of the structure of the active positioning ring, the passive positioning ring and the swing arm of the present invention;

[0040] Figure 5 It is a schematic diagram of the structure of the swing arm, the sliding sleeve and the extension arm of the present invention;

[0041] Figure 6 For the present invention Figure 5 The enlarged view of point A in the middle;

[0042] Figure 7 For the present invention Figure 5 The enlarged view of point B in the middle;

[0043] Figure 8 It is a schematic diagram of the structure of the first wire wheel, the second wire wheel, the first steel cable, the second steel cable, the transmission shaft, the split shaft, and the external shaft of the present invention;

[0044] Fig. 9 It is a three-dimensional structural cross-sectional view of the swing arm, the sliding sleeve and the extension arm of the present invention;

[0045] Fig.10 For the present invention Fig. 9 Enlarged view of point C in the middle.

[0046] In the figure: 1, base; 2, vertical frame; 3, operating table; 4, slot; 5, fixing bolt; 6, double-sided positioner; 61, rotating shaft; 62, swing arm; 63, sliding sleeve; 64, extension arm; 65, active positioning ring; 66, passive positioning ring; 67, first circular groove; 68, first wire wheel; 69, first wire hole; 610, first steel cable; 611, driving gear; 612, first tooth surface; 613, second circular groove; 614, second wire wheel; 615, second wire hole; 616, second steel cable; 617, second tooth surface; 618, fixed point support assembly; 6181, shaft groove; 6182, transmission shaft; 619, 183. split shaft; 6184. bevel gear; 6185. external shaft; 6186. tooth pattern; 6187. transmission gear; 6188. upper pressure ring; 6189. threaded seat; 61810. rotating ring; 61811. rack; 61812. vertical groove; 61813. lower pressure ring; 61814. tooth groove; 61815. drawing reference assembly; 618151. reference arm; 618152. fan groove; 618153. drawing tray; 618154. telescopic rod; 618155. reference positioning ring; 618156. air cavity; 618157. rocker; 618158. air bag. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical staff in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figures 1 to 10 The present invention provides a technical solution: a welding tool for carriage processing, comprising a base 1, a vertical frame 2 is fixedly connected to the rear side of the base 1, and an operating table 3 is fixedly installed on the vertical frame 2, a slot 4 for loading a carriage plate is opened on the front side of the surface of the operating table 3, and a fixing bolt 5 matched with the slot 4 is threadedly connected on the operating table 3. Before welding, the carriage plate is loaded along the slot 4 and fixed with the fixing bolt 5.

[0049] A double-sided positioner 6 is provided on the operating table 3 .

[0050] The double-sided positioner 6 includes a rotating shaft 61 rotatably set on the operating table 3, and the two ends of the rotating shaft 61 pass through the top surface and the bottom surface of the operating table 3 respectively, the sides of the two ends of the rotating shaft 61 are fixedly connected with swing arms 62, and the inside of the swing arm 62 is slidably connected with a sliding sleeve 63, and the inside of the sliding sleeve 63 is slidably connected with an extension arm 64, and the end of the upper extension arm 64 away from the sliding sleeve 63 is fixedly connected with an active positioning ring 65, and the end of the lower extension arm 64 away from the sliding sleeve 63 is fixedly connected with a passive positioning ring 66, which pushes the upper swing arm 62 to rotate through the rotating shaft 61. During this process, the extension arm 64 is pulled out along the swing arm 62 and the sliding sleeve 63, so that the active positioning ring 65 is aligned with the welding area on the upper surface of the car body panel.

[0051] The upper and lower swing arms 62 are each provided with a first circular groove 67 connected to the interior thereof, and a first wire wheel 68 is rotatably connected in the first circular groove 67. The upper and lower swing arms 62 and the rotating shaft 61 are each provided with a first wire hole 69, and both ends of the first wire hole 69 are respectively connected to the upper and lower first circular grooves 67. A first steel cable 610 is movably arranged in the first wire hole 69, and the upper end of the first steel cable 610 is fixedly connected to the upper first wire wheel 68, and the lower end of the first steel cable 610 is wound along the lower first wire wheel 68 and fixedly connected thereto.

[0052] A driving gear 611 is fixedly mounted on the first wire wheel 68 , and side surfaces of the upper and lower sliding sleeves 63 are both provided with first tooth surfaces 612 meshing with the driving gear 611 on the same side.

[0053] The upper and lower sliding sleeves 63 are each provided with a second circular groove 613 connected to the interior thereof, and a second wire wheel 614 is rotatably connected in the second circular groove 613. Second wire holes 615 are each provided in the upper and lower sliding sleeves 63 and the rotating shaft 61, and both ends of the second wire hole 615 are respectively connected to the upper and lower second circular grooves 613. A second steel cable 616 is movably arranged in the second wire hole 615, and the upper end of the second steel cable 616 is fixedly connected to the upper second wire wheel 614, and the lower end of the second steel cable 616 is wound along the lower second wire wheel 614 and fixedly connected thereto.

[0054] A driving gear 611 is also fixedly provided on the second wire wheel 614, and the side surfaces of the upper and lower extension arms 64 are provided with second tooth surfaces 617 meshing with the driving gear 611 on the same side. When the upper swing arm 62 is deflected, the lower swing arm 62 moves synchronously with the rotating shaft 61, and when the upper sliding sleeve 63 and the upper extension arm 64 are pulled out, the first tooth surface 612 and the second tooth surface 617 respectively drive the first wire wheel 68 and the second wire wheel 614 to rotate along the driving gear 611 on the same side, and the first steel cable 610 and the second steel cable 616 are used to drive the first wire wheel 68 and the second wire wheel 614 on the lower side to rotate, and then push the lower sliding sleeve 63 and the lower extension arm 64 to automatically pop out, and the pop-up amount is equal to that of the upper sliding sleeve 63 and the upper extension arm 64, that is, the passive positioning ring 66 is in the horizontal mirror position of the active positioning ring 65.

[0055] Fixed-point support components 618 are provided on the active positioning ring 65 , the passive positioning ring 66 , the extension arm 64 , the swing arm 62 and the rotating shaft 61 .

[0056] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the fixed-point support assembly 618 includes an axis groove 6181 opened inside the rotating shaft 61, and the interior of the axis groove 6181 is rotatably connected to the transmission shaft 6182, and the interior of the swing arm 62 is rotatably connected to the sub-shaft 6183, and one end of the sub-shaft 6183 penetrates into the axis groove 6181, and the penetrating end of the sub-shaft 6183 and the end of the transmission shaft 6182 are fixedly connected with mutually meshing bevel gears 6184.

[0057] The extension arm 64 is internally rotatably connected to the circumscribed shaft 6185 , and the surfaces of the circumscribed shaft 6185 and the sub-shaft 6183 are provided with teeth 6186 , and the circumscribed shaft 6185 and the sub-shaft 6183 are interlacedly meshed through the teeth 6186 .

[0058] One end of the upper and lower external shafts 6185 away from the split shaft 6183 passes through the active positioning ring 65 and the passive positioning ring 66 respectively, and the passing end of the external shaft 6185 is fixedly connected to the transmission gear 6187 .

[0059] An upper pressure ring 6188 is movably provided inside the active positioning ring 65 , and a threaded seat 6189 is fixedly provided at the bottom of the active positioning ring 65 , and the active positioning ring 65 is threadedly connected along the threaded seat 6189 .

[0060] The surface of the upper pressure ring 6188 is rotatably connected to the rotating ring 61810, and the bottom of the rotating ring 61810 is fixedly connected to the rack 61811. The inner side of the active positioning ring 65 is provided with a vertical groove 61812 for the rack 61811 to move up and down, and the rack 61811 is meshed with the upper transmission gear 6187 in the vertical groove 61812. The upper pressure ring 6188 is rotated to move downward along the threaded seat 6189. During this process, the rack 61811 moves downward synchronously and pushes the upper transmission gear 6187 and the upper sub-shaft 6183 to rotate.

[0061] The passive positioning ring 66 is internally slidably connected with a lower pressure ring 61813, and the side surface of the lower pressure ring 61813 is provided with a tooth groove 61814 meshing with the lower transmission gear 6187. The upper sub-shaft 6183 rotates via the bevel gear 6184 and the transmission shaft 6182 to drive the lower sub-shaft 6183 to rotate, and then the lower transmission gear 6187 is used to push the lower pressure ring 61813 upward along the tooth groove 61814.

[0062] A drawing reference component 61815 is provided on the rotating shaft 61 and the operating table 3 .

[0063] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the drawing comparison component 61815 includes a comparison arm 618151 fixedly mounted on the side surface of the rotating shaft 61, and the comparison arm 618151 and the swing arm 62 are symmetrically distributed along the rotating shaft 61, a fan groove 618152 for the comparison arm 618151 to swing is opened on the operating table 3, and a drawing tray 618153 matching the comparison arm 618151 is fixedly connected to the rear side of the surface of the operating table 3, and a flat drawing is placed on the drawing tray 618153, and when the swing arm 62 is deflected through the rotating shaft 61, the comparison arm 618151 is deflected synchronously.

[0064] The interior of the control arm 618151 is slidably connected to a telescopic rod 618154, and the outer end of the telescopic rod 618154 is fixedly connected to a control positioning ring 618155 that matches the drawing tray 618153.

[0065] An air cavity 618156 is provided inside the rotating shaft 61, and a rocker plate 618157 is rotatably connected inside the air cavity 618156. Air bags 618158 cooperating with the rocker plate 618157 are fixedly provided on the upper and lower sides of the air cavity 618156. The upper air bag 618158 is connected to the inside of the swing arm 62, and the lower air bag 618158 is connected to the inside of the control arm 618151. When the sliding sleeve 63 and the extension arm 64 are pulled out, negative pressure is generated inside the swing arm 62, and the upper air bag 618158 contracts to deflect the rocker plate 618157 and squeeze the lower air bag 618158. Gas is injected into the control arm 618151 to push out the telescopic rod 618154 and the control positioning ring 618155, so that the position of the active positioning ring 65 on the car body plate is proportionally reflected on the drawing.

[0066] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, a caliper that cooperates with the fixing bolt 5 is slidably connected in the slot 4, and a tension spring is provided between the caliper and the slot 4. When the fixing bolt 5 is screwed in, it pushes the caliper to contact the car plate. After the fixing bolt 5 is unscrewed, the tension spring pulls the caliper away from the car plate.

[0067] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, magnetic rings are fixedly provided on the inner sides of the lower pressure ring 61813 and the upper pressure ring 6188. When the parts to be welded are placed into the lower pressure ring 61813 and the upper pressure ring 6188, the serving magnetic rings can be used for preliminary magnetic attraction constraint, so that the user can adjust the position before pressing.

[0068] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, rubber rings are fixedly provided on opposite sides of the upper pressure ring 6188 and the lower pressure ring 61813. When the upper pressure ring 6188 and the lower pressure ring 61813 are used to support the car body plate or the parts to be welded, the rubber rings can ensure more contact areas and avoid crushing injuries.

[0069] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, a spring clip is provided on the drawing tray 618153. After placing the drawing on the drawing tray 618153, the spring clip can fix the drawing along the side to prevent the drawing from falling and affecting the welding operation.

[0070] A method for using a welding tool for carriage processing comprises the following steps:

[0071] S1. Install the carriage plate along the slot 4 and fix it with the fixing bolts 5.

[0072] S2. Push the upper swing arm 62 to rotate through the rotating shaft 61. During this process, the extension arm 64 is pulled out along the swing arm 62 and the sliding sleeve 63, so that the active positioning ring 65 is aligned with the welding area on the upper surface of the car body plate. When the upper swing arm 62 deflects, the lower swing arm 62 moves synchronously with the rotating shaft 61, and when the upper sliding sleeve 63 and the upper extension arm 64 are pulled out, the first tooth surface 612 and the second tooth surface 617 respectively drive the first wire wheel 68 and the second wire wheel 614 to rotate along the same side driving gear 611, and use the first steel cable 610 and the second steel cable 616 to drive the first wire wheel 68 and the second wire wheel 614 on the lower side to rotate, and then push the lower sliding sleeve 63 and the lower extension arm 64 to automatically pop out, and the pop-up amount is equal to that of the upper sliding sleeve 63 and the upper extension arm 64, that is, the passive positioning ring 66 is in the horizontal mirror position of the active positioning ring 65.

[0073] S3. After the active positioning ring 65 and the passive positioning ring 66 are positioned, the upper pressure ring 6188 is rotated to move downward along the threaded seat 6189. During this process, the rack 61811 moves downward synchronously and pushes the upper transmission gear 6187 and the upper branch shaft 6183 to rotate. The lower branch shaft 6183 is driven to rotate via the bevel gear 6184 and the transmission shaft 6182, and then the lower transmission gear 6187 is used to push the lower pressure ring 61813 upward along the tooth groove 61814.

[0074] S4. Place the plane drawing on the drawing tray 618153. When the swing arm 62 is deflected by the rotating shaft 61, the control arm 618151 is deflected synchronously, and when the sliding sleeve 63 and the extension arm 64 are pulled out, negative pressure is generated inside the swing arm 62, and the upper air bag 618158 contracts, causing the rocker plate 618157 to deflect and squeeze the lower air bag 618158, and gas is injected into the control arm 618151 to push out the telescopic rod 618154 and the control positioning ring 618155, so that the position of the active positioning ring 65 on the car body plate is proportionally reflected on the drawing.

[0075] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A welding tool for carriage processing, comprising a base (1), characterized in that: The rear side of the base (1) is fixedly connected to a vertical frame (2), and an operating table (3) is fixedly mounted on the vertical frame (2); a slot (4) for inserting a carriage board is provided on the front side of the surface of the operating table (3), and a fixing bolt (5) matching the slot (4) is threadedly connected to the operating table (3); The operating table (3) is provided with a double-sided positioner (6); The double-sided positioner (6) comprises a rotating shaft (61) rotatably arranged on the operating table (3), and the two ends of the rotating shaft (61) respectively penetrate the top surface and the bottom surface of the operating table (3), the side parts of the two ends of the rotating shaft (61) are fixedly connected to swing arms (62), and the inside of the swing arm (62) is slidably connected to a sliding sleeve (63), and the inside of the sliding sleeve (63) is slidably connected to an extension arm (64), and the end of the upper extension arm (64) away from the sliding sleeve (63) is fixedly connected to an active positioning ring (65), and the end of the lower extension arm (64) away from the sliding sleeve (63) is fixedly connected to a passive positioning ring (66); The swing arms (62) on the upper and lower sides are each provided with a first circular groove (67) connected to the interior thereof, and a first wire wheel (68) is rotatably connected to the first circular groove (67). The interiors of the two swing arms (62) and the rotating shaft (61) on the upper and lower sides are each provided with a first wire hole (69), and both ends of the first wire hole (69) are respectively connected to the first circular grooves (67) on the upper and lower sides. A first steel cable (610) is movably arranged in the first wire hole (69), and the upper end of the first steel cable (610) is fixedly connected to the upper first wire wheel (68), and the lower end of the first steel cable (610) is fixedly connected to the lower first wire wheel (68) after being wound along the lower first wire wheel (68). A driving gear (611) is fixedly provided on the first wire wheel (68), and the side surfaces of the sliding sleeve (63) on the upper and lower sides are provided with first tooth surfaces (612) meshing with the driving gear (611) on the same side; The upper and lower sliding sleeves (63) are each provided with a second circular groove (613) connected to the interior thereof, and a second wire wheel (614) is rotatably connected in the second circular groove (613); the upper and lower sliding sleeves (63) and the rotating shaft (61) are each provided with a second wire hole (615), and both ends of the second wire hole (615) are respectively connected to the upper and lower second circular grooves (613); a second steel cable (616) is movably arranged in the second wire hole (615), and the upper end of the second steel cable (616) is fixedly connected to the upper second wire wheel (614), and the lower end of the second steel cable (616) is fixedly connected to the lower second wire wheel (614) after being wound along the lower second wire wheel (614); The second wire wheel (614) is also fixedly provided with a driving gear (611), and the side surfaces of the extension arms (64) on the upper and lower sides are both provided with second tooth surfaces (617) meshing with the driving gear (611) on the same side; A fixed-point support assembly (618) is provided on the active positioning ring (65), the passive positioning ring (66), the extension arm (64), the swing arm (62) and the rotating shaft (61).

2. A welding tool for carriage processing according to claim 1, characterized in that: The fixed-point support assembly (618) comprises an axis groove (6181) provided inside the rotating shaft (61), and the axis groove (6181) is rotatably connected to a transmission shaft (6182), the swing arm (62) is rotatably connected to a split shaft (6183), and one end of the split shaft (6183) penetrates into the axis groove (6181), and the penetration end of the split shaft (6183) and the end of the transmission shaft (6182) are both fixedly connected to mutually meshing bevel gears (6184); The extension arm (64) is internally rotatably connected to an external shaft (6185), and the surfaces of the external shaft (6185) and the sub-shaft (6183) are both provided with tooth patterns (6186), and the external shaft (6185) and the sub-shaft (6183) are interlacedly meshed via the tooth patterns (6186); The ends of the circumscribed shafts (6185) on the upper and lower sides away from the split shaft (6183) respectively penetrate the active positioning ring (65) and the passive positioning ring (66), and the penetrated ends of the circumscribed shafts (6185) are fixedly connected to the transmission gears (6187); An upper pressure ring (6188) is movably provided inside the active positioning ring (65), and a threaded seat (6189) is fixedly provided at the bottom of the active positioning ring (65), and the active positioning ring (65) is threadedly connected along the threaded seat (6189); The surface of the upper pressure ring (6188) is rotatably connected to a rotating ring (61810), and the bottom of the rotating ring (61810) is fixedly connected to a rack (61811), and the inner side of the active positioning ring (65) is provided with a vertical groove (61812) for the rack (61811) to move up and down, and the rack (61811) is meshed with the upper transmission gear (6187) in the vertical groove (61812); The passive positioning ring (66) is slidably connected to a lower pressure ring (61813) inside, and a side surface of the lower pressure ring (61813) is provided with a tooth groove (61814) meshing with a lower transmission gear (6187); The rotating shaft (61) and the operating table (3) are provided with a drawing comparison component (61815).

3. A welding tool for carriage processing according to claim 2, characterized in that: The drawing comparison component (61815) comprises a comparison arm (618151) fixedly mounted on the side surface of the rotating shaft (61), and the comparison arm (618151) and the swing arm (62) are symmetrically distributed along the rotating shaft (61), the operating table (3) is provided with a fan groove (618152) for the comparison arm (618151) to swing, and a drawing tray (618153) matching the comparison arm (618151) is fixedly connected to the rear side of the surface of the operating table (3); The interior of the control arm (618151) is slidably connected to a telescopic rod (618154), and the outer end of the telescopic rod (618154) is fixedly connected to a control positioning ring (618155) that matches the drawing tray (618153); An air cavity (618156) is provided inside the rotating shaft (61), and a seesaw (618157) is rotatably connected inside the air cavity (618156). Air bags (618158) cooperating with the seesaw (618157) are fixedly provided on the upper and lower sides of the air cavity (618156). The upper air bag (618158) is communicated with the interior of the swing arm (62), and the lower air bag (618158) is communicated with the interior of the control arm (618151).

4. The welding tool for carriage processing according to claim 1 is characterized in that: A caliper matched with the fixing bolt (5) is slidably connected in the clamping slot (4), and a tension spring is provided between the caliper and the clamping slot (4).

5. The welding tool for carriage processing according to claim 2 is characterized in that: Magnetic rings are fixedly arranged on the inner sides of the lower pressure ring (61813) and the upper pressure ring (6188).

6. The welding tool for carriage processing according to claim 2, characterized in that: Rubber rings are fixedly provided on opposite sides of the upper pressure ring (6188) and the lower pressure ring (61813).

7. The welding tool for carriage processing according to claim 3 is characterized in that: The drawing tray (618153) is provided with a spring clip.

8. A method for using a welding tool for carriage processing, using the welding tool for carriage processing as claimed in claim 3, characterized in that: The steps include: S1. Insert the carriage plate along the slot (4) and fix it with fixing bolts (5); S2. The upper swing arm (62) is pushed to rotate through the rotating shaft (61). During this process, the extension arm (64) is pulled out along the swing arm (62) and the sliding sleeve (63), so that the active positioning ring (65) is aligned with the welding area on the upper surface of the carriage plate. When the upper swing arm (62) is deflected, the lower swing arm (62) moves synchronously with the rotating shaft (61), and when the upper sliding sleeve (63) and the upper extension arm (64) are pulled out, the first tooth surface (612) and the second tooth surface (617) are respectively moved along the upper surface of the carriage plate. The driving gear (611) on the same side drives the first wire wheel (68) and the second wire wheel (614) to rotate, and the first steel cable (610) and the second steel cable (616) drive the first wire wheel (68) and the second wire wheel (614) on the lower side to rotate, and then push the lower sliding sleeve (63) and the lower extension arm (64) to automatically pop out, and the amount of pop-out is equal to that of the upper sliding sleeve (63) and the upper extension arm (64), that is, the passive positioning ring (66) is in a horizontal mirror image position of the active positioning ring (65); S3, after the active positioning ring (65) and the passive positioning ring (66) are positioned, the upper pressure ring (6188) is rotated to move downward along the threaded seat (6189). During this process, the rack (61811) moves downward synchronously and drives the upper transmission gear (6187) and the upper sub-shaft (6183) to rotate, and the lower sub-shaft (6183) is driven to rotate via the bevel gear (6184) and the transmission shaft (6182). Then, the lower transmission gear (6187) is used to push the lower pressure ring (61813) upward along the tooth groove (61814); S4. Place the plan drawing on the drawing tray (618153). When the swing arm (62) is deflected by the rotating shaft (61), the control arm (618151) is deflected synchronously. When the sliding sleeve (63) and the extension arm (64) are withdrawn, negative pressure is generated inside the swing arm (62). The upper airbag (618158) contracts, causing the seesaw (618157) to deflect and squeeze the lower airbag (618158). Gas is injected into the control arm (618151) to push out the telescopic rod (618154) and the control positioning ring (618155), so that the position of the active positioning ring (65) on the carriage plate is proportionally reflected on the drawing.

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