A trailer chassis bearing welding positioning device and welding positioning method

Abstract

The present invention proposes a welding positioning device and a welding positioning method for a trailer chassis bearing, which includes a conveyor frame, a clamping and centering mechanism, a feeding mechanism and a positioning mechanism. The conveyor frame is used to transmit the chassis, and the clamping and centering mechanism is used to clamp the chassis and determine the center of the chassis; the feeding mechanism is used to transfer the bearing to the position where the bearing is assembled above the chassis; the positioning mechanism includes a fixed frame, a guide assembly and a translation assembly; the guide assembly includes a guide rod, a mounting plate and at least two first clamping devices, the guide rod is vertically arranged above the chassis, and is used to receive the bearing transferred from the feeding mechanism, and at least two first clamping devices are used to selectively clamp the guide rod; the translation assembly is used to make the guide rod correspond to the position where the bearing is assembled above the chassis. The present invention can complete the precise positioning of the bearing on the chassis, avoid the displacement of the bearing by the clamping device during the contact and clamping process of the bearing, thereby ensuring the precise position of the rotating shaft after welding on the chassis.

Description

Technical Field

[0001] The invention relates to the technical field of trailer production and processing, and in particular to a welding positioning device and a welding positioning method for a trailer chassis bearing. Background Art

[0002] During the production and processing of the trailer chassis, bearings need to be welded and connected to other shafts on the trailer frame. Since the position of the shaft on the frame is fixed, the bearing needs to be in the center position on the chassis so that the shaft can be accurately connected to the bearing after the chassis is installed on the frame.

[0003] The chassis is usually welded from sheet metal. Since the incoming sheet metal dimensions are not uniform, when welding the bearing on the chassis, it is necessary to first find the center position on the chassis, and then place the bearing at the center of the chassis surface for welding. Currently, in the process of bearing alignment welding, it is usually done manually by marking the center of the sheet metal surface, obtaining the center point of the sheet metal, and then processing a shallow blind hole at the center point, and then placing the bearing in the blind hole for welding. This operation method is inefficient.

[0004] In order to improve the efficiency of the welding operation of the bearing on the chassis, mechanized welding equipment is currently mostly used on the market. That is, the center of the material plate on the chassis is accurately located by welding equipment, and there is no need to process blind holes on the material plate. The welding operation of the chassis and the bearing is completed by a welding robot. Although the above method can improve the welding efficiency of the bearing and the chassis, during the mechanized operation, the bearing needs to be positioned and placed on the chassis first, and then clamped and fixed, so as to ensure that the bearing does not move during the welding process of the chassis and the bearing by the welding robot. Since different mechanisms need to be set up for the placement and clamping of the bearing, the bearing is placed in the center of the top surface of the material plate, and the bearing and the top surface of the material plate are only in surface contact. During the contact and clamping process between the clamping mechanism and the bearing, the bearing will move, which will lead to inaccurate positioning of the bearing on the rack. Summary of the invention

[0005] In view of this, the present invention proposes a trailer chassis bearing welding positioning device and a welding positioning method to solve the problem that different mechanisms need to be set up for bearing placement and pressing. After the bearing is placed at the center of the top surface of the chassis, it only has surface contact with the chassis. During the contact and pressing process between the pressing mechanism and the bearing, the bearing will move, which will lead to the problem of inaccurate positioning of the bearing on the chassis.

[0006] The technical solution of the present invention is achieved in this way:

[0007] On the one hand, the present invention provides a trailer chassis bearing welding positioning device, which includes a conveyor frame and a clamping and centering mechanism, the conveyor frame is used to transport the chassis, and the clamping and centering mechanism is arranged on the conveyor frame to clamp and fix the chassis and determine the center of the chassis;

[0008] It also includes a loading mechanism and a positioning mechanism; wherein the loading mechanism is arranged on one side of the conveying frame and is used to transfer the bearing to the position where the bearing is assembled above the base frame;

[0009] The positioning mechanism is arranged above the conveying frame, and comprises a fixed frame, a guide assembly and a translation assembly; wherein the fixed frame is located above the conveying frame;

[0010] The guide assembly includes a guide rod, a mounting plate and at least two first clamping devices, the guide rod is vertically arranged above the base frame, and is used to receive the bearing transferred from the feeding mechanism, the mounting plate is parallel to the guide rod, and at least two first clamping devices are fixedly arranged on the mounting plate at intervals along the height direction of the guide rod, and are used to selectively clamp the guide rod;

[0011] The translation assembly is arranged on the fixed frame and fixedly connected with the mounting plate, and is used for driving the guide assembly to translate so that the guide rod corresponds to the position of the bearing assembled above the base frame.

[0012] On the basis of the above technical solution, preferably, the clamping and centering mechanism includes two groups of first clamping components, and the two groups of first clamping components are symmetrically distributed on both sides of the width direction of the conveying frame. The first clamping assembly includes a first telescopic element and a first clamping piece. The first telescopic element is fixedly arranged on the conveying frame, and is used to drive the first clamping piece to clamp the left and right sides of the base frame along the width direction of the conveying frame.

[0013] Further, preferably, the clamping and centering mechanism further includes two groups of blocking components and two groups of second clamping components; wherein,

[0014] The two groups of blocking components are symmetrically distributed on both sides of the conveyor frame in the width direction and are located at the front side of the conveyor frame. The blocking components include a second telescopic element and a blocking member. The second telescopic element is fixedly arranged on the conveyor frame and is used to drive the blocking member to translate in the width direction of the conveyor frame to block the front side of the chassis in the transmission direction. The blocking member is provided with a first coordinate sensor.

[0015] The two groups of second clamping assemblies are symmetrically distributed on both sides of the conveying frame in the width direction and are located on the rear side of the conveying frame. The second clamping assembly includes a third telescopic element, a fourth telescopic element and a second clamping piece. The fixed end of the third telescopic element is fixedly set on the conveying frame, the telescopic end of the third telescopic element is perpendicular to the transmission direction of the conveying frame and is fixedly connected to the fixed end of the fourth telescopic element, and the telescopic end of the fourth telescopic element is fixedly connected to the clamping piece, and the telescopic end of the fourth telescopic element is parallel to the transmission direction of the conveying frame. A second coordinate sensor is arranged on the second clamping piece.

[0016] On the basis of the above technical solution, preferably, the loading mechanism includes a mounting frame, a material dividing assembly and a feeding assembly. The mounting frame is fixedly arranged on one side of the width direction of the conveying frame. The material dividing assembly and the feeding assembly are fixedly arranged on the mounting frame at intervals along the transmission direction of the conveying frame. The material dividing assembly is used to store multiple bearings and divide them one by one, and the feeding assembly is used to receive the bearings separated from the material dividing assembly.

[0017] Further, preferably, the feeding assembly includes a feeding frame, a pneumatic clamp, a linear drive module, a first mounting seat, a second mounting seat, a rotating cylinder, a translation cylinder and a first lifting cylinder;

[0018] The feeding rack is fixedly arranged on the mounting rack;

[0019] The first mounting seat and the linear module are both arranged on the feeding frame, and the linear drive module is used to drive the first mounting seat to translate along the transmission direction of the conveying frame;

[0020] The second mounting seat and the translation cylinder are both arranged on the first mounting seat, and the translation cylinder is used to drive the second mounting seat to slide on the first mounting seat along the width direction of the conveyor frame;

[0021] The rotary cylinder is fixedly arranged on one end of the second mounting base facing the material distributing assembly;

[0022] The pneumatic clamp is horizontally arranged on the top of the rotating cylinder, and the pneumatic clamp is connected to the rotating cylinder through a first lifting cylinder.

[0023] Furthermore, preferably, the material distributing assembly includes a feeding cylinder, a bracket, a second lifting cylinder, a material receiving plate and a material distributing cylinder;

[0024] The bracket is fixedly arranged on a mounting frame on a side of the feeding frame close to the pneumatic clamping claw;

[0025] The loading barrel is vertically fixed on the bracket, and a material storage cavity is arranged in the axial direction of the loading barrel for stacking materials from top to bottom;

[0026] The material distribution cylinder is fixedly arranged at the lower end of the upper barrel, and the piston rod of the material distribution cylinder extends horizontally into the material storage chamber to support the second to last bearing inside the material storage chamber, and the lifting cylinder is fixedly arranged on the bracket below the upper barrel;

[0027] The telescopic end of the second lifting cylinder is vertically upward, and is used to drive the receiving plate to translate upward to receive the bearing separated from the storage cavity.

[0028] On the basis of the above technical solution, preferably, the translation assembly includes a first linear module and a lifting module, the first linear module is fixedly arranged on the top of the conveying frame, the lifting module is installed on the first linear module, the first linear module is used to drive the lifting module to translate along the transmission direction of the conveying frame, the guide assembly is fixedly arranged at the bottom end of the lifting module, and the lifting module is used to drive the guide assembly to move up and down.

[0029] Furthermore, preferably, the guide assembly also includes a clamping cylinder and a second clamping device, the second clamping device is located directly below all the first clamping devices, the clamping cylinder is fixedly arranged on the mounting plate, and is used to drive the second clamping device to move up and down, the first clamping device and the second clamping device both include a clamping cylinder and a clamping claw connected to the clamping cylinder, a clamping member is provided on the bottom surface of the clamping claw on the second clamping device, and is used to clamp the bearing sleeved on the bottom end of the guide rod, and position sensors are provided on the top surfaces of the clamping cylinders of the second clamping device and the first clamping device.

[0030] Preferably, the translation assembly further includes a second linear module, which is disposed between the first linear module and the lifting module, and is used to drive the lifting module to translate along the width direction of the conveyor frame.

[0031] On the other hand, the present invention also discloses a trailer chassis bearing welding positioning method, which utilizes the trailer chassis bearing welding positioning device disclosed above, and comprises the following steps:

[0032] S1. Place the chassis on the conveyor frame. When the chassis is transferred to the bearing assembly station, fix the chassis horizontally on the conveyor frame through the clamping centering mechanism and determine the center position of the chassis.

[0033] S2, the translation assembly drives the guide assembly to translate, so that the guide rod corresponds to the position of the assembly bearing above the chassis;

[0034] S3. The bearing is transferred to the top of the guide rod through the feeding mechanism, and slides down along the guide rod, and is opened from top to bottom in sequence through the first clamping device, so that the bearing falls from top to bottom along the guide rod onto the base frame, and the bearing is positioned on the base frame, and then the welding operation of the bearing and the base frame is carried out by the welding robot.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] (1) The trailer chassis bearing welding positioning device disclosed in the present invention is provided with a positioning mechanism above the conveying frame. When the chassis moves to the bearing assembly station, the chassis is fixed in position and the center of the chassis is determined by a clamping and centering mechanism. The guide assembly can be driven to translate by a translation assembly so that the guide rod is vertically located at the position where the bearing is assembled above the chassis. A loading mechanism is provided on one side of the conveying frame. The loading mechanism transfers the bearing to the guide rod. The bearing slides downward along the guide rod and is opened in sequence from top to bottom by a first clamping device so that the bearing falls from top to bottom onto the chassis along the guide rod. With the cooperation of the guide rod, the bearing can be accurately positioned on the chassis to avoid displacement of the bearing during the contact and pressing process of the clamping device on the bearing, thereby ensuring the accurate position of the rotating shaft after welding on the chassis.

[0037] (2) By providing a material dividing component and a material feeding component, the material dividing component can be used to divide a plurality of bearings one by one, and the material feeding component can be used to receive and feed the bearings, thereby improving the material discharging efficiency of the bearings on the chassis;

[0038] (3) By arranging a second clamping device at the bottom end of the mounting plate and arranging a clamping cylinder between the mounting plate and the second clamping device, when the bearing slides along the guide rod to the surface of the chassis, the bearing can be positioned in the horizontal direction through the guide rod, and the second clamping device can be driven by the clamping cylinder to move downward while clamping the guide rod, and the bearing can be clamped by the clamping piece on the second clamping device to achieve the positioning of the bearing in the axial direction, ensuring that the bearing remains accurately positioned and fixed on the chassis, thereby achieving reliability and stability when the bearing is welded to the chassis. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 It is a schematic diagram of the working state of the trailer chassis bearing welding positioning device disclosed in the present invention;

[0041] Figure 2 It is a three-dimensional structural schematic diagram of the trailer chassis bearing welding positioning device disclosed in the present invention;

[0042] Figure 3 It is a three-dimensional schematic diagram of the assembly structure of the conveying frame and the clamping and centering mechanism disclosed in the present invention;

[0043] Figure 4It is a three-dimensional structural schematic diagram of the feeding mechanism disclosed in the present invention;

[0044] Figure 5 A top view of the material distribution assembly disclosed in the present invention;

[0045] Figure 6 for Figure 5 Plane section view at AA in the middle;

[0046] Figure 7 It is a three-dimensional structural schematic diagram of the positioning mechanism disclosed in the present invention;

[0047] Reference numerals:

[0048] P, chassis; S, bearing; 1, conveyor frame; 2, clamping and centering mechanism; 3, feeding mechanism; 4, positioning mechanism; 41, fixed frame; 42, guide assembly; 43, translation assembly; 421, guide rod; 422, mounting plate; 423, first clamping device; 21, first clamping assembly; 211, first telescopic element; 212, first clamping member; 22, blocking assembly; 23, second clamping assembly; 221, second telescopic element; 222, blocking member; 231, third telescopic element; 232, fourth telescopic element; 233, second clamping member; L1, first coordinate sensor; L2, second coordinate sensor; L3, position sensor; 31, installation Rack; 32, material distribution component; 33, feeding component; 331, feeding rack; 332, pneumatic clamp; 333, linear drive module, 334, first mounting seat; 335, second mounting seat; 336, rotary cylinder; 337, translation cylinder; 338, first lifting cylinder; 321, loading barrel; 322, bracket; 323, second lifting cylinder; 324, material receiving plate; 325, material distribution cylinder; 3211, material storage chamber; 431, first linear module; 432, lifting module; 424, clamping cylinder; 425, second clamping device; 4231, clamping cylinder; 4232, clamping jaws; 4251, clamping member; 433, second linear module. DETAILED DESCRIPTION

[0049] The following will be combined with 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0050] like Figure 1 As shown, combined Figure 2 The embodiment of the present invention discloses a trailer chassis bearing welding positioning device, including a conveying frame 1 and a clamping and centering mechanism 2.

[0051] The conveyor frame 1 is used to transport the chassis. In this embodiment, a transmission roller or a transmission chain plate can be provided on the conveyor frame 1, so that the chassis placed on the conveyor frame 1 is transported along the transmission direction. In this embodiment, the chassis is formed by welding of material plates. In order to achieve the welding of bearings at the center of the top surface of the chassis, this embodiment sets a clamping and centering mechanism 2 at the station where the chassis assembles the bearings. The clamping and centering mechanism 2 is provided on the conveyor frame 1, and is used to clamp and fix the chassis and determine the center of the chassis. After the chassis is fixed and the center of the chassis is found, the bearing needs to be placed at the center of the top surface of the chassis.

[0052] In the prior art, after the center position of the top surface of the chassis is determined, the bearing can be clamped by a robot and placed at the center position of the top surface of the chassis. However, at this time, the chassis and the bearing are not positionally constrained. When driven by external forces, such as when some clamping mechanisms clamp the bearing on the chassis, it is easy for the bearing to slip relative to the chassis, resulting in inaccurate positioning of the bearing and the chassis, and further causing poor welding of the bearing and the chassis.

[0053] In order to solve the above technical problems, the trailer chassis bearing welding positioning device disclosed in this embodiment also includes a feeding mechanism 3 and a positioning mechanism 4.

[0054] Among them, the loading mechanism 3 is arranged on one side of the conveying frame 1, and is used to transfer the bearing to the position where the bearing is assembled above the base frame. In this embodiment, the loading mechanism 3 can transfer the bearing to the center position of the base frame.

[0055] The positioning mechanism 4 is arranged above the conveying frame 1, and includes a fixing frame 41, a guide assembly 42 and a translation assembly 43; wherein the fixing frame 41 is located above the conveying frame 1;

[0056] The guide assembly 42 includes a guide rod 421, a mounting plate 422 and at least two first clamping devices 423. The guide rod 421 is vertically arranged above the base frame for receiving the bearing transferred from the feeding assembly 33. The mounting plate 422 is parallel to the guide rod 421. At least two first clamping devices 423 are fixedly arranged on the mounting plate 422 at intervals along the height direction of the guide rod 421 for selectively clamping the guide rod 421.

[0057] The translation assembly 43 is disposed on the fixed frame 41 and fixedly connected to the mounting plate 422, and is used to drive the guide assembly 42 to translate so that the guide rod 421 corresponds to the position of the bearing assembly above the base frame.

[0058] By adopting the above technical solution, when the chassis moves to the bearing assembly station, the clamping and centering mechanism 2 is used to fix the chassis and determine the center of the chassis. The translation assembly 43 can drive the guide assembly 42 to translate, so that the guide rod 421 is vertically located at the position of the bearing assembly above the chassis. At this time, multiple first clamping devices 423 clamp different parts of the guide rod 421 in the axial direction, and the bottom end of the guide rod 421 abuts against the top surface of the center of the chassis. By arranging a feeding mechanism 3 on one side of the conveyor frame 1, the feeding mechanism 3 transfers the bearing to the guide rod 421, and the bearing slides down along the guide rod 421, and is opened from top to bottom in sequence by the first clamping device 423, so that the bearing falls from top to bottom along the guide rod 421 onto the chassis. With the cooperation of the guide rod 421, the bearing can be accurately positioned on the chassis, avoiding displacement of the bearing during the contact and compression process of the clamping device, thereby ensuring the accurate position of the rotating shaft after welding on the chassis.

[0059] It is worth noting that in the process of the bearing sliding down along the guide rod 421, multiple first clamping devices 423 are opened in sequence. When the next first clamping device 423 is opened, the previous first clamping device 423 will immediately clamp the guide rod 421 to prevent the guide rod 421 from being unable to maintain a vertical state due to unstable clamping, resulting in the bearing being unable to be accurately aligned on the base frame with the cooperation of the guide rod 421.

[0060] In this embodiment, refer to the attached Figure 3 As shown, in order to fix the base frame on the conveying frame 1, the clamping and centering mechanism 2 of this embodiment includes two groups of first clamping components 21, and the two groups of first clamping components 21 are symmetrically distributed on both sides of the width direction of the conveying frame 1. The first clamping component 21 includes a first telescopic element 211 and a first clamping piece 212. The first telescopic element 211 is fixedly arranged on the conveying frame 1, and is used to drive the first clamping piece 212 to hold the left and right sides of the base frame along the width direction of the conveying frame 1.

[0061] By the cooperation of the two groups of first clamping components 21, the base frame can be centered in the width direction of the conveying frame 1 and the base frame can be kept horizontally fixed.

[0062] In the above embodiment, by maintaining the synchronous movement of the two groups of first clamping assemblies 21 , the base frame can be centered in the width direction of the conveyor frame 1 , and the central longitudinal section of the base frame can be maintained at the center of the transmission line of the conveyor frame 1 .

[0063] In order to find the center point of the base frame on the conveying frame 1 , the clamping and centering mechanism 2 of this embodiment further includes two groups of blocking components 22 and two groups of second clamping components 23 .

[0064] The two groups of blocking components 22 are symmetrically distributed on both sides of the conveying frame 1 in the width direction and are located at the front side of the conveying frame 1. The blocking components 22 include a second telescopic element 221 and a blocking member 222. The second telescopic element 221 is fixedly arranged on the conveying frame 1 and is used to drive the blocking member 222 to translate in the width direction of the conveying frame 1 to block the front side of the bottom frame in the transmission direction. The blocking member 222 is provided with a first coordinate sensor L1.

[0065] The two groups of second clamping assemblies 23 are symmetrically distributed on both sides of the conveying frame 1 in the width direction and are located on the rear side of the conveying frame 1. The second clamping assembly 23 includes a third telescopic element 231, a fourth telescopic element 232 and a second clamping piece 233. The fixed end of the third telescopic element 231 is fixedly set on the conveying frame 1. The telescopic end of the third telescopic element 231 is perpendicular to the transmission direction of the conveying frame 1 and is fixedly connected to the fixed end of the fourth telescopic element 232. The telescopic end of the fourth telescopic element 232 is fixedly connected to the clamping piece. The telescopic end of the fourth telescopic element 232 is parallel to the transmission direction of the conveying frame 1. The second clamping piece 233 is provided with a second coordinate sensor L2.

[0066] By adopting the above technical solution, when the chassis is transported along the conveyor frame 1, the telescopic end of the second telescopic element 221 extends along the width direction of the conveyor frame 1, driving the blocking member 222 to be located at the front side of the chassis in the transmission direction. When the chassis moves to the position of the blocking member 222, it is blocked by the blocking member 222. At this time, the telescopic end of the third telescopic element 231 extends along the width direction of the conveyor frame 1, driving the fourth telescopic element 232 to be located at the rear side of the chassis in the transmission direction. The fourth telescopic element 232 drives the second clamping member 233 to hold the chassis along the transmission direction of the conveyor frame 1, thereby realizing the positioning of the chassis in four directions under the cooperation of the first clamping member 212, the blocking member 222 and the second clamping member 233. At the same time, since the first coordinate sensor L1 and the second coordinate sensor L2 can obtain the coordinates of the front and rear sides of the chassis, the center point of the chassis along the transmission direction of the conveyor frame 1 can be calculated, thereby determining the center point of the chassis after being fixed on the conveyor frame 1.

[0067] As some preferred implementations, refer to the attached Figure 4-6 As shown, the material mechanism includes a mounting frame 31, a material dividing assembly 32 and a material feeding assembly 33. The mounting frame 31 is fixedly arranged on one side of the width direction of the conveying frame 1. The material dividing assembly 32 and the material feeding assembly 33 are fixedly arranged on the mounting frame 31 at intervals along the transmission direction of the conveying frame 1. The material dividing assembly 32 is used to store multiple bearings and divide them one by one, and the material feeding assembly 33 is used to receive the bearings separated from the material dividing assembly 32.

[0068] By adopting the above technical solution, by setting up the dividing component 32 and the feeding component 33, the dividing component 32 can be used to divide multiple bearings one by one, and the feeding component 33 can be used to receive and feed the bearings, which can improve the discharge efficiency of the bearings on the chassis.

[0069] This embodiment shows a preferred implementation of the material dividing assembly 32 . Specifically, the material dividing assembly 32 includes a loading barrel 321 , a bracket 322 , a second lifting cylinder 323 , a material receiving plate 324 and a material dividing cylinder 325 .

[0070] The bracket 322 is fixedly arranged on the mounting frame 31 on one side of the feeding frame 331 close to the pneumatic clamping jaws 4232332;

[0071] The loading barrel 321 is vertically fixed on the bracket 322, and a material storage cavity 3211 is arranged in the axial direction of the loading barrel 321 for stacking materials from top to bottom;

[0072] The material distribution cylinder 325 is fixedly arranged at the lower end of the upper barrel 321, and the piston rod of the material distribution cylinder 325 extends horizontally into the material storage chamber 3211 to support the second to last bearing inside the material storage chamber 3211. The lifting cylinder is fixedly arranged on the bracket 322 below the upper barrel 321;

[0073] The telescopic end of the second lifting cylinder 323 is vertically upward, and is used to drive the receiving plate 324 to translate upward to receive the bearing separated from the storage chamber 3211.

[0074] By adopting the above technical scheme, in the initial state, the second lifting cylinder 323 drives the receiving plate 324 to rise up and abut against the bottom end of the storage chamber 3211, and the bearings are manually loaded from top to bottom in the storage chamber 3211 of the loading barrel 321. When the bearings are divided, the piston rod of the dividing cylinder 325 is extended to support the second to last bearing inside the storage chamber 3211. At this time, the bearing at the bottom of the storage chamber 3211 falls on the receiving plate 324. The second lifting cylinder 323 drives the receiving plate 324 to descend, so that a certain distance can be opened between the receiving plate 324 and the loading barrel 321, thereby facilitating the feeding mechanism to take away the bearing on the receiving plate 324.

[0075] In order to enable the feeding component 33 to remove the separated bearings on the dividing component 32 and place them on the guide rod 421, this embodiment shows a preferred implementation of the feeding component 33. Specifically, the feeding component 33 includes a feeding frame 331, a pneumatic clamp 332, a linear drive module 333, a first mounting seat, a second mounting seat 335, a rotating cylinder 336, a translation cylinder 337 and a first lifting cylinder 338.

[0076] Wherein, the feeding rack 331 is fixedly arranged on the mounting rack 31;

[0077] The first mounting seat and the linear module are both arranged on the feeding frame 331, and the linear drive module 333 is used to drive the first mounting seat to translate along the transmission direction of the conveying frame 1;

[0078] The second mounting seat 335 and the translation cylinder 337 are both arranged on the first mounting seat, and the translation cylinder 337 is used to drive the second mounting seat 335 to slide on the first mounting seat along the width direction of the conveying frame 1;

[0079] The rotating cylinder 336 is fixedly disposed on one end of the second mounting base 335 facing the material distributing assembly 32;

[0080] The pneumatic clamp 332 is horizontally arranged on the top of the rotating cylinder 336 , and the pneumatic clamp 332 and the rotating cylinder 336 are connected via a first lifting cylinder 338 .

[0081] By adopting the above technical solution, after a bearing is separated from the receiving plate 324, the linear drive module 333 drives the first mounting seat, the second mounting seat 335, the rotating cylinder 336, the translating cylinder 337, the first lifting cylinder 338 and the pneumatic clamp 332 to move along the feeding rack 331 toward the material dividing assembly 32. First, the pneumatic clamp 332 is driven to rise by the first lifting cylinder 338, so that the pneumatic clamp 332 is higher than the receiving plate 324, and at the same time, the pneumatic clamp 332 is ensured to be horizontally located between the feeding barrel 321 and the receiving plate 324. The pneumatic clamp 332 opens, the first lifting cylinder 338 drives the pneumatic clamp 332 to descend, and the pneumatic clamp 332 falls onto the receiving plate 324. The pneumatic clamp 332 closes to grab the bearing on the receiving plate 324. Under the action of the linear drive module 333, the pneumatic clamp 332 horizontally disengages from between the loading barrel 321 and the receiving plate 324, and then under the action of the rotating cylinder 336, the pneumatic clamp 332 rotates 90°, and then under the action of the translation cylinder 337, the pneumatic clamp 332 is driven to extend horizontally, and then the bearing is placed on the top of the guide rod 421.

[0082] The linear drive module 333 disclosed in the present invention is preferably a pulley linear module or a screw linear module.

[0083] By the cooperation between the material dividing assembly 32 and the material feeding assembly 33, the automatic material dividing and feeding of the bearing can be realized, thereby improving the efficiency of assembling the bearing on the chassis.

[0084] Since the center position of the chassis can be obtained by clamping the centering mechanism 2, the guide rod 421 can be driven to move to the target position by the translation assembly 43.

[0085] Specifically, the translation assembly 43 includes a first linear module 431 and a lifting module 432. The first linear module 431 is fixedly arranged on the top of the conveying frame 1, and the lifting module 432 is installed on the first linear module 431. The first linear module 431 is used to drive the lifting module 432 to translate along the transmission direction of the conveying frame 1. The guide assembly 42 is fixedly arranged at the bottom end of the lifting module 432, and the lifting module 432 is used to drive the guide assembly 42 to move up and down.

[0086] It should be noted that since the base frame is already in a centered state in the width direction of the conveyor frame 1, the first linear module 431 is located directly above the center of the transmission direction of the conveyor frame 1. The first linear module 431 can drive the guide assembly 42 to translate, thereby translating the guide rod 421 to the center position of the base frame, and the lifting module 432 can be used to abut the bottom end of the guide rod 421 against the top surface of the base frame.

[0087] As the bearing slides down along the guide rod 421 , the first clamping devices 423 open in sequence to ensure that the bearing falls onto the surface of the chassis along the guide rod 421 . However, the bearing is only horizontally positioned on the chassis without axial positioning.

[0088] When the bearing and the chassis are welded, the bearing is prone to rotate or move along the axial direction of the guide rod 421 .

[0089] To this end, the present embodiment further improves the guide assembly 42. Figure 7 As shown, the guide assembly 42 also includes a clamping cylinder 424 and a second clamping device 425. The second clamping device 425 is located directly below all the first clamping devices 423. The clamping cylinder 424 is fixedly arranged on the mounting plate 422, and is used to drive the second clamping device 425 to move up and down. The first clamping device 423 and the second clamping device 425 both include a clamping cylinder 4231 and a clamping claw 4232 connected to the clamping cylinder 4231. The bottom surface of the clamping claw 4232 on the second clamping device 425 is provided with a clamping member 4251, which is used to clamp the bearing sleeved on the bottom end of the guide rod 421. The top surfaces of the clamping cylinder 4231 of the second clamping device 425 and the first clamping device 423 are both provided with position sensors L3.

[0090] By adopting the above technical solution, through the cooperation of the first clamping device 423 and the second clamping device 425, the bearing falls onto the surface of the base frame along the guide rod 421. At this time, the clamping cylinder 424 drives the second clamping device 425 to move downward along the guide rod 421, and the bearing is clamped by the clamping piece 4251 on the second clamping device 425 to achieve the positioning of the bearing in the axial direction, ensuring that the bearing remains accurately positioned and fixed on the base frame, thereby achieving reliability and stability when the bearing is welded to the base frame.

[0091] It is worth noting that when the second clamping device 425 moves downward, the clamping claw 4232 on the second clamping device 425 can provide a slight clamping to the guide rod 421, so that the clamping claw 4232 can move downward along the guide rod 421 while clamping the guide rod 421, thereby pressing the bearing at the bottom end of the guide rod 421, thereby achieving accurate positioning of the bearing in the axial and horizontal directions.

[0092] In addition, it is worth noting that a position sensor L3 is provided on the top surface of the clamping cylinder 4231 corresponding to each clamping jaw 4232. When a bearing on the top surface of the clamping jaw 4232 is detected by the position sensor L3, the clamping jaw 4232 opens and the bearing slides down along the guide rod 421. When the position sensor L3 does not detect the bearing, the clamping jaw 4232 clamps the guide rod 421, thereby ensuring that the guide rod 421 is always in a vertical state.

[0093] The translation assembly 43 further includes a second linear module 433, which is disposed between the first linear module 431 and the lifting module 432, and is used to drive the lifting module 432 to translate along the width direction of the conveying frame 1. Due to the arrangement, the lifting module 432 and the guide assembly 42 can be driven by the second linear module 433 to translate along the width of the conveying frame 1, so that the guide rod 421 moves to the center of the chassis.

[0094] The present invention also discloses a trailer chassis bearing welding positioning method, which utilizes the trailer chassis bearing welding positioning device disclosed above, and comprises the following steps:

[0095] S1, placing the chassis on the conveyor frame 1. When the chassis is transferred to the bearing assembly station, the chassis is horizontally fixed on the conveyor frame 1 by the clamping centering mechanism 2, and the center position of the chassis is determined;

[0096] S2, the translation assembly 43 drives the guide assembly 42 to translate, so that the guide rod 421 corresponds to the position of the assembly bearing above the chassis;

[0097] S3. The bearing is transferred to the top of the guide rod 421 through the feeding mechanism 3, and slides down along the guide rod 421, and is opened from top to bottom in sequence through the first clamping device 423, so that the bearing falls from top to bottom along the guide rod 421 onto the base frame, and the bearing is positioned on the base frame, and then the welding operation of the bearing and the base frame is carried out by the welding robot.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A trailer chassis bearing welding positioning device, comprising a conveying frame (1) and a clamping and centering mechanism (2), wherein the conveying frame (1) is used to transport the chassis, and the clamping and centering mechanism (2) is arranged on the conveying frame (1) and is used to clamp and fix the chassis; Features: It also includes a loading mechanism (3) and a positioning mechanism (4); wherein the loading mechanism (3) is arranged on one side of the conveying frame (1) and is used to transfer the bearing to a position above the base frame for assembling the bearing; The positioning mechanism (4) is arranged above the conveying frame (1), and comprises a fixed frame (41), a guide assembly (42) and a translation assembly (43); wherein the fixed frame (41) is located above the conveying frame (1); The guide assembly (42) comprises a guide rod (421), a mounting plate (422) and at least two first clamping devices (423); the guide rod (421) is vertically arranged above the base frame and is used to receive the bearing transferred from the feeding mechanism (3); the mounting plate (422) is parallel to the guide rod (421); and the at least two first clamping devices (423) are fixedly arranged on the mounting plate (422) at intervals along the height direction of the guide rod (421) and are used to selectively clamp the guide rod (421); A translation assembly (43) is arranged on the fixed frame (41) and fixedly connected to the mounting plate (422), and is used to drive the guide assembly (42) to translate so that the guide rod (421) corresponds to the position of the bearing assembly above the bottom frame; The translation assembly (43) comprises a first linear module (431) and a lifting module (432), wherein the first linear module (431) is fixedly arranged on the top of the conveying frame (1), and the lifting module (432) is installed on the first linear module (431), and the first linear module (431) is used to drive the lifting module (432) to translate along the transmission direction of the conveying frame (1), and the guide assembly (42) is fixedly arranged at the bottom end of the lifting module (432), and the lifting module (432) is used to drive the guide assembly (42) to move up and down; The guide assembly (42) further comprises a clamping cylinder (424) and a second clamping device (425). The second clamping device (425) is located directly below all the first clamping devices (423). The clamping cylinder (424) is fixedly arranged on the mounting plate (422) and is used to drive the second clamping device (425) to move up and down. The first clamping device (423) and the second clamping device (425) both comprise a clamping cylinder (4231) and a clamping claw (4232) connected to the clamping cylinder (4231). A clamping piece (4251) is arranged on the bottom surface of the clamping claw (4232) on the second clamping device (425) and is used to clamp the bearing sleeved on the bottom end of the guide rod (421). Position sensors (L3) are arranged on the top surfaces of the clamping cylinders (4231) of the second clamping device (425) and the first clamping device (423).

2. The trailer chassis bearing welding positioning device according to claim 1, characterized in that: The clamping and centering mechanism (2) comprises two groups of first clamping assemblies (21), the two groups of first clamping assemblies (21) are symmetrically distributed on both sides of the conveying frame (1) in the width direction, the first clamping assembly (21) comprises a first telescopic element (211) and a first clamping piece (212), the first telescopic element (211) is fixedly arranged on the conveying frame (1), and is used to drive the first clamping piece (212) to press against the left and right sides of the base frame along the width direction of the conveying frame (1).

3. The trailer chassis bearing welding positioning device according to claim 2, characterized in that: The clamping and centering mechanism (2) further comprises two groups of blocking components (22) and two groups of second clamping components (23); wherein: Two groups of blocking components (22) are symmetrically distributed on both sides of the conveying frame (1) in the width direction and are located at the front side of the conveying frame (1). The blocking component (22) comprises a second telescopic element (221) and a blocking member (222). The second telescopic element (221) is fixedly arranged on the conveying frame (1) and is used to drive the blocking member (222) to translate in the width direction of the conveying frame (1) so as to block the front side of the bottom frame in the transmission direction. A first coordinate sensor (L1) is arranged on the blocking member (222). Two groups of second clamping assemblies (23) are symmetrically distributed on both sides of the conveying frame (1) in the width direction and are located at the rear side of the conveying frame (1). The second clamping assembly (23) comprises a third telescopic element (231), a fourth telescopic element (232) and a second clamping piece (233). The fixed end of the third telescopic element (231) is fixedly arranged on the conveying frame (1). The telescopic end of the third telescopic element (231) is perpendicular to the transmission direction of the conveying frame (1) and is fixedly connected to the fixed end of the fourth telescopic element (232). The telescopic end of the fourth telescopic element (232) is fixedly connected to the second clamping piece (233). The telescopic end of the fourth telescopic element (232) is parallel to the transmission direction of the conveying frame (1). The second clamping piece (233) is provided with a second coordinate sensor (L2).

4. The trailer chassis bearing welding positioning device according to claim 1, characterized in that: The loading mechanism (3) comprises a mounting frame (31), a material distribution component (32) and a material feeding component (33); the mounting frame (31) is fixedly arranged on one side of the conveying frame (1) in the width direction; the material distribution component (32) and the material feeding component (33) are fixedly arranged on the mounting frame (31) at intervals along the transmission direction of the conveying frame (1); the material distribution component (32) is used to store a plurality of bearings and distribute them one by one; and the material feeding component (33) is used to receive the bearings separated by the material distribution component (32).

5. The trailer chassis bearing welding positioning device according to claim 4, characterized in that: The feeding assembly (33) comprises a feeding frame (331), a pneumatic clamp (332), a linear drive module (333), a first mounting seat, a second mounting seat (335), a rotating cylinder (336), a translation cylinder (337) and a first lifting cylinder (338); The feeding frame (331) is fixedly arranged on the mounting frame (31); The first mounting seat and the linear module are both arranged on the feeding frame (331), and the linear drive module (333) is used to drive the first mounting seat to translate along the transmission direction of the conveying frame (1); The second mounting seat (335) and the translation cylinder (337) are both arranged on the first mounting seat, and the translation cylinder (337) is used to drive the second mounting seat (335) to slide on the first mounting seat along the width direction of the conveying frame (1); The rotary cylinder (336) is fixedly arranged on one end of the second mounting seat (335) facing the material distribution assembly (32); The pneumatic clamp (332) is horizontally arranged on the top of the rotating cylinder (336), and the pneumatic clamp (332) and the rotating cylinder (336) are connected via a first lifting cylinder (338).

6. The trailer chassis bearing welding positioning device according to claim 5, characterized in that: The material distribution assembly (32) comprises a loading cylinder (321), a bracket (322), a second lifting cylinder (323), a material receiving plate (324) and a material distribution cylinder (325); The bracket (322) is fixedly arranged on a mounting frame (31) on a side of the feeding frame (331) close to the pneumatic clamping claw (332); The loading barrel (321) is vertically fixed on the bracket (322), and a material storage cavity (3211) is arranged in the axial direction of the loading barrel (321) for stacking materials from top to bottom; The material distribution cylinder (325) is fixedly arranged at the lower end of the upper barrel (321), and the piston rod of the material distribution cylinder (325) extends horizontally into the material storage chamber (3211) to support the second to last bearing inside the material storage chamber (3211). The lifting cylinder is fixedly arranged on the bracket (322) below the upper barrel (321); The telescopic end of the second lifting cylinder (323) is vertically upward, and is used to drive the receiving plate (324) to translate upward to receive the bearing separated from the storage chamber (3211).

7. The trailer chassis bearing welding positioning device according to claim 1, characterized in that: The translation assembly (43) further comprises a second linear module (433), which is arranged between the first linear module (431) and the lifting module (432), and is used to drive the lifting module (432) to translate along the width direction of the conveying frame (1).

8. A method for welding and positioning a trailer chassis bearing, using the trailer chassis bearing welding and positioning device according to any one of claims 1 to 7, characterized in that: The steps include: S1, placing the chassis on the conveying frame (1), and after the chassis is transferred to the bearing assembly station, the chassis is horizontally fixed on the conveying frame (1) by a clamping centering mechanism (2), and the center position of the chassis is determined; S2, the translation assembly (43) drives the guide assembly (42) to translate, so that the guide rod (421) corresponds to the position of the bearing assembly above the base frame; S3. The bearing is transferred to the position above the guide rod (421) through the feeding mechanism (3), and slides down along the guide rod (421), and is opened in sequence from top to bottom through the first clamping device, so that the bearing falls from top to bottom along the guide rod (421) onto the base frame, and the bearing is positioned on the base frame. Then, the welding operation of the bearing and the base frame is performed by the welding robot.

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