CN219358415U - Welding jig - Google Patents

Abstract

The application discloses welding jig. The welding jig comprises a carrier plate mechanism and a pressing plate mechanism; the plate carrying mechanism comprises a carrying assembly and a plurality of heat dissipation assemblies; the bearing assembly is used for positioning the first workpiece; the plurality of heat dissipation components are arranged on the bearing component at intervals and are used for being abutted against the bottom surface of the first workpiece so as to support and dissipate heat of the first workpiece; the pressing plate mechanism comprises a pressing plate and a plurality of positioning components; the pressing plate is arranged opposite to the bearing assembly, and a plurality of through holes are formed in the pressing plate; the plurality of positioning components are arranged on the pressing plate at intervals, correspond to the plurality of through holes one by one, and are used for fixing the second workpiece penetrating through the corresponding through holes. The welding jig can improve the positioning accuracy of the second workpiece and improve the heat dissipation effect caused by welding.

Description

Welding jig

Technical Field

The application relates to the technical field of workpiece positioning, in particular to a welding jig.

Background

During the product assembly process, it is often necessary to weld small parts to large workpieces. However, the existing jig for positioning the parts has lower positioning precision, so that the workpiece precision after welding is also lower; in addition, heat generated in the welding process is not easy to dissipate, so that the phenomenon of blushing or blackening of the welding back surface of the workpiece is caused.

Disclosure of Invention

In view of the above, it is necessary to provide a welding jig that improves the welding efficiency of products and improves the heat dissipation effect during welding.

The embodiment of the application provides a welding jig which is used for positioning and jointing a second workpiece on a first workpiece, and comprises a carrier plate mechanism and a pressing plate mechanism; the plate carrying mechanism comprises a carrying assembly and a plurality of heat dissipation assemblies; the bearing assembly is used for positioning a first workpiece; the plurality of heat dissipation assemblies are arranged on the bearing assembly at intervals and are used for abutting against the bottom surface of the first workpiece so as to support and dissipate heat of the first workpiece; the pressing plate mechanism comprises a pressing plate and a plurality of positioning components; the pressing plate is arranged opposite to the bearing assembly, and a plurality of through holes are formed in the pressing plate; the positioning components are arranged on the pressing plate at intervals, the positioning components correspond to the through holes one by one, and the positioning components are used for fixing the second workpiece penetrating through the corresponding through holes; the pressing plate is used for being movably covered on the first workpiece, so that the positioning assemblies and the heat dissipation assemblies are in one-to-one correspondence, the positioning assemblies and the heat dissipation assemblies are located on two opposite sides of the first workpiece, and the second workpiece is abutted to the first workpiece.

According to the welding jig, the plurality of positioning assemblies are arranged on the pressing plate, so that the pressing plate mechanism can grasp a plurality of second workpieces at one time, and the material taking efficiency is improved; when the pressing plate mechanism cover is arranged on the first workpiece, the plurality of positioning assemblies simultaneously abut against the plurality of second workpieces on the first workpiece, and the plurality of second workpieces are simultaneously positioned, so that the position precision among the plurality of second workpieces is improved, and the precision after welding is further improved. When the first workpiece and the second workpiece are welded, the heat near the second workpiece is maximum, and the phenomenon of blushing or blackening on the first workpiece is easy to occur, so that waste products are caused. Because the heat radiation component corresponds to the positioning component, the heat radiation component can conduct heat near the second workpiece in real time, so that defects on the first workpiece caused by untimely heat radiation are avoided.

In some embodiments, the positioning assembly includes a fixture, a positioning module, and a bumper; the fixing piece is arranged on one side of the pressing plate, which is away from the first workpiece; the positioning module is connected to the fixing piece in a sliding manner and is used for fixing the second workpiece; the buffer piece is sleeved on the positioning module, one end of the buffer piece is abutted to the fixing piece, the other end of the buffer piece is abutted to the positioning module, and the buffer piece is used for driving the positioning module to drive the second workpiece to elastically abut to the first workpiece.

In some embodiments, the positioning module includes a positioning member and a resilient clamping member; the positioning piece is connected to the fixing piece in a sliding manner, the buffer piece is sleeved on the positioning piece, one end of the buffer piece is abutted to the fixing piece, the other end of the buffer piece is abutted to the positioning piece, a positioning hole, a ring groove and a plurality of mounting holes are formed in one end, far away from the fixing piece, of the positioning piece, the positioning hole is axially formed in the positioning piece, the positioning hole is used for positioning the second workpiece, the ring groove is formed in the outer side of the positioning piece, the mounting holes are formed in the bottom of the ring groove at intervals, and the mounting holes are communicated with the positioning hole; the elastic clamping piece is arranged in the annular groove and used for clamping the second workpiece.

In some embodiments, the positioning module further comprises a positioning block; the positioning block is arranged in the positioning hole, and is provided with a protruding part which is used for being inserted into the second workpiece so as to position the second workpiece.

In some embodiments, the heat dissipating assembly includes a fixed block, a contoured block, and an elastic member; the fixed block is connected with the bearing assembly; the profiling block is slidably arranged on the fixed block, and one end of the profiling block, which faces the pressing plate, is used for being matched with the bottom surface of the first workpiece; the elastic piece is arranged in the fixed block, one end of the elastic piece is abutted to the bearing assembly, the other end of the elastic piece is abutted to the profiling block, and the elastic piece is used for enabling the profiling block to protrude out of the fixed block so as to be abutted to the first workpiece.

In some embodiments, the carrier assembly includes a carrier plate, a plurality of guide posts, a carrier frame, and a limit module; the plurality of heat dissipation components are arranged on the bearing plate; the guide posts penetrate through the bearing plate and are arranged at intervals; the bearing frame is provided with a plurality of connecting holes, the connecting holes are in one-to-one correspondence with the guide posts, the connecting holes are sleeved on the corresponding guide posts, and the heat dissipation components are positioned in the bearing frame; the limiting module is arranged on the bearing frame and used for limiting the first workpiece.

In some embodiments, the limit module comprises a plurality of first limit blocks, a plurality of second limit blocks, a locating pin, and a fool-proof block; the two first limiting blocks are arranged on the bearing frame at intervals along the first direction, a bearing surface matched with the bottom surface of the first workpiece is arranged on the first limiting blocks, and the two first limiting blocks are used for being abutted to the first workpiece so as to limit the first workpiece in the first direction and bearing the first workpiece. The second limiting blocks are arranged on the bearing frame at intervals along the second direction and are used for abutting against the first workpiece so as to limit the first workpiece in the second direction, and the first direction is perpendicular to the second direction; the positioning pin is arranged on the bearing frame and is used for being inserted into the first workpiece to position the first workpiece; the fool-proof block is arranged on the bearing frame and is arranged at intervals with the positioning pin and used for being inserted into the first workpiece to correct the placing direction of the first workpiece.

In some embodiments, the welding jig further comprises a transmission mechanism; the transmission mechanism is used for transmitting the bearing frame to the bearing plate.

In some embodiments, the welding jig further comprises a lifting mechanism comprising a base plate, a drive assembly, and a plurality of guide sleeves; the bottom plate is arranged on one side, away from the first workpiece, of the bearing plate; the driving component is arranged on the bottom plate, connected with the bearing plate and used for driving the bearing plate to do lifting motion; the guide sleeves are in one-to-one correspondence with the guide posts and are in sliding connection with the guide posts, and the guide sleeves are used for guiding the bearing assembly.

In some embodiments, the drive assembly includes a drive, a slider, and a guide; the driving piece is rotationally connected with the bottom plate; the sliding piece is rotationally connected with the driving piece and is connected with the bearing plate; the guide piece is arranged on the bottom plate, an inclined guide surface is arranged on the guide piece, and the guide surface is used for guiding the sliding piece; the sliding piece slides along the guide surface under the driving of the driving piece so as to drive the bearing plate to do lifting motion.

Drawings

Fig. 1 is a schematic perspective view of a welding jig according to some embodiments of the present application.

Fig. 2 is a schematic perspective view of the carrier mechanism shown in fig. 1.

Fig. 3 is a schematic perspective view of the platen mechanism shown in fig. 1.

Fig. 4 is a schematic perspective view of the platen shown in fig. 3.

Fig. 5 is a schematic perspective view of the positioning assembly shown in fig. 3.

Fig. 6 is a cross-sectional view of the positioning assembly shown in fig. 5 taken along VI-VI.

Fig. 7 is a schematic perspective view of the positioning member shown in fig. 6.

Fig. 8 is a schematic perspective view of the carrying frame and the limiting module shown in fig. 2.

Fig. 9 is a cross-sectional view of the heat dissipating assembly shown in fig. 2.

Fig. 10 is a schematic perspective view of the transmission mechanism shown in fig. 1.

Fig. 11 is a schematic perspective view of another view of the transport mechanism shown in fig. 10.

Fig. 12 is a schematic perspective view of the lifting mechanism, the carrier plate and the heat dissipating assembly shown in fig. 1.

Fig. 13 is a front view of the lift mechanism, carrier plate and heat dissipating assembly shown in fig. 12.

Description of the main reference signs

Welding jig 100

Carrier plate mechanism 10

Bearing assembly 11

Bearing plate 111

Guide post 112

Bearing frame 113

Connection hole 1131

Limit module 114

Fool-proof block 1141

Locating pin 1142

First limiting block 1143

Bearing surface 1143a

Second limiting block 1144

Radiating component 12

Fixed block 121

Profiling block 122

Elastic member 123

Platen mechanism 20

Platen 21

Through hole 211

Positioning assembly 22

Fixing member 221

Slide hole 2211

Positioning module 222

Positioning piece 2221

Positioning hole 2221a

Ring groove 2221b

Mounting hole 2221c

Elastic clamping piece 2222

Positioning block 2223

Boss 2223a

Cushioning member 223

Transmission mechanism 30

Rack 31

Motor 32

Driving gear 33

Driven gear 34

Chain 35

Driving roller 36

Conveyor belt 37

Drive rod 38

Lifting mechanism 40

Bottom plate 41

Drive assembly 42

Driving member 421

Slider 422

First slide plate 4221

Second slide plate 4222

Pulley 4223

Guide 423

Guide surface 4231

Guide sleeve 43

Position sensor 50

Positioning sensor 60

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, it is to be noted that the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the two components can be connected in a mechanical mode, can be electrically connected or can be communicated with each other, can be directly connected, can be indirectly connected through an intermediate medium, and can be communicated with each other inside the two components or can be in interaction relation with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, some embodiments of the present application provide a welding jig 100. The welding jig 100 is used to position a second workpiece on a first workpiece. The first workpiece can be a shell of an electronic product, and the outline of the shell of many electronic products is arc-shaped, such as a back shell of a computer; the second workpiece may be a stud. The welding jig 100 in this embodiment is used in conjunction with a laser welding apparatus to weld a second workpiece to a first workpiece. Compared with the traditional manual welding mode, the laser welding speed is high, the welding point deformation is small, and the welding processing efficiency and the joint precision of the first workpiece and the second workpiece are improved.

Referring to fig. 1, 2, 3 and 4, the welding jig 100 includes a carrier plate mechanism 10 and a platen mechanism 20. The carrier mechanism 10 includes a carrier assembly 11 and a plurality of heat dissipation assemblies 12. The plurality of heat dissipation components 12 are arranged on the bearing component 11 at intervals, the first workpiece is positioned on the bearing component 11, the plurality of heat dissipation components 12 are abutted to the bottom surface of the first workpiece, and on one hand, the heat dissipation components 12 support the first workpiece so as to play a role of bearing; on the other hand, the heat dissipation assembly 12 can directly and rapidly conduct heat generated during welding away from the first workpiece.

The platen mechanism 20 includes a platen 21 and a plurality of positioning assemblies 22. One side of the pressing plate 21 facing the first workpiece is matched with the top surface of the first workpiece, a plurality of through holes 211 are formed in the pressing plate 21, a plurality of positioning assemblies 22 are arranged on the pressing plate 21 at intervals, and the positioning assemblies 22 correspond to the through holes 211 one by one. When the pressing plate mechanism 20 clamps the second workpiece, the second workpiece passes through the through hole 211 and is fixed by the corresponding positioning component 22.

When the welding jig 100 positions the first workpiece and the second workpiece, the pressing plate 21 is driven by a power source to drive the positioning assembly 22 to move to the second workpiece and simultaneously grasp a plurality of second workpieces; at the same time, the first workpiece is placed on the carrier assembly 11; then, the pressing plate 21 drives the positioning components 22 to cover the first workpiece, at this time, the positioning components 22 and the heat dissipation components 12 are in one-to-one correspondence, and the positioning components 22 and the heat dissipation components 12 are located at two sides of the first workpiece, and meanwhile, the second workpiece is abutted to the first workpiece.

In this way, the plurality of positioning assemblies 22 are arranged on the pressing plate 21, so that the pressing plate mechanism 20 can clamp a plurality of second workpieces at one time, thereby improving the material taking efficiency; when the pressing plate mechanism 20 is covered on the first workpiece, the plurality of positioning assemblies 22 simultaneously support the plurality of second workpieces on the first workpiece, and the plurality of second workpieces are simultaneously positioned, so that the position precision among the plurality of second workpieces is improved, and the joint precision of the first workpiece and the second workpiece after welding is further improved.

When the first workpiece and the second workpiece are welded, the phenomenon of blushing or blackening on the first workpiece is easily caused by heat generated by welding, so that waste products are caused. Because the heat dissipation assembly 12 corresponds to the positioning assembly 22, the heat dissipation assembly 12 can conduct heat near the second workpiece in time, so that welding defects on the first workpiece caused by untimely heat dissipation are avoided.

In addition, the first workpiece can be placed on the carrier plate mechanism 10 through the manipulator for positioning, the pressing plate mechanism 20 is driven by the power source to automatically realize the operation of grabbing the second workpiece and positioning the second workpiece on the first workpiece, and then the laser welding device welds the first workpiece and the second workpiece. In the manual welding mode, the welding precision is affected by experience of operators, and automatic welding can be realized by matching the welding jig 100 with a laser welding device, so that the manual welding mode is replaced, and the welding precision and the welding efficiency of the first workpiece and the second workpiece are improved.

Referring to fig. 3, 5 and 6, in some embodiments, the positioning assembly 22 includes a fixture 221, a positioning module 222 and a buffer 223. The fixing piece 221 is installed on one side of the pressing plate 21, which is away from the first workpiece, the positioning module 222 is slidably connected to the fixing piece 221, the positioning module 222 is used for fixing a second workpiece, the buffer piece 223 is sleeved on the positioning module 222, one end of the buffer piece 223 is abutted to the fixing piece 221, the other end of the buffer piece 223 is abutted to the positioning module 222, and the positioning module 222 drives the second workpiece to be elastically abutted to the first workpiece under the driving of the buffer piece 223. Wherein the dampener 223 may be a dampener or other resilient member.

Thus, the second workpiece is elastically abutted against the first workpiece under the action of the buffer member 223, so that the second workpiece is not easy to crush the first workpiece, and the first workpiece is protected. In addition, since some deviation will occur in the processed first workpiece, the buffer member 223 is disposed between the fixing member 221 and the positioning module 222, so that the second workpiece can be always abutted to the first workpiece under the action of the buffer member 223, thereby avoiding the situation that the second workpiece cannot be abutted to the first workpiece.

Referring to fig. 6 and 7, in some embodiments, the positioning module 222 includes a positioning member 2221 and a resilient clamping member 2222. The positioning piece 2221 is slidably mounted on the fixing piece 221, the buffer piece 223 is sleeved on the positioning piece 2221, one end of the buffer piece 223 is abutted to the fixing piece 221, and the other end of the buffer piece 223 is abutted to the positioning piece 2221. In an embodiment, the fixing member 221 is provided with a through sliding hole 2211, the positioning member 2221 is slidably connected in the sliding hole 2211, and a fixing bolt is installed at an end of the positioning member 2221 away from the second workpiece, and the fixing bolt abuts against the fixing member 221 to prevent the positioning member 2221 from being separated from the sliding hole 2211.

One end of the positioning member 2221, which is far away from the fixing member 221, is provided with a positioning hole 2221a, an annular groove 2221b and a plurality of mounting holes 2221c. The positioning hole 2221a penetrates the positioning piece 2221 along the axial direction of the positioning piece 2221, the plurality of mounting holes 2221c are arranged at intervals at the bottom of the groove 2221b, and the mounting holes 2221c are communicated with the positioning hole 2221 a. The elastic clamping piece 2222 is disposed in the annular groove 2221b, the elastic piece 123 clamping piece is specifically a rubber ring, and the elastic clamping piece 2222 may be other elastic members.

When the second workpiece is gripped, the gripping action of the second workpiece can be achieved by aligning the second workpiece to the positioning hole 2221a and inserting the second workpiece into the positioning hole 2221 a. When the second workpiece is inserted into the positioning hole 2221a, the elastic clamping piece 2222 contacts the second workpiece through the through hole 211, and the elastic clamping piece 2222 clamps the second workpiece under the elastic action of the elastic clamping piece 2222, so that the second workpiece cannot fall out from the positioning hole 2221 a. The grabbing mode is simple and quick, the second workpiece can be quickly taken and put, and manual operation modes can be replaced, so that the welding efficiency of the first workpiece and the second workpiece is improved.

Referring to fig. 6, in some embodiments, the positioning module 222 further includes a positioning block 2223. The positioning block 2223 is mounted in the positioning hole 2221a, the end of the positioning block 2223 facing the second workpiece is provided with a protruding portion 2223a, and when the second workpiece is inserted into the positioning hole 2221a, the protruding portion 2223a is inserted into the second workpiece to position the second workpiece. The positioning hole 2221a positions the outer side of the second workpiece, the boss 2223a positions the inner side of the second workpiece, and accurate positioning of the second workpiece is achieved under the combined action of the positioning hole 2221a and the boss 2223 a.

Referring to fig. 2 and 8, in some embodiments, the carrier assembly 11 includes a carrier plate 111, a plurality of guide posts 112, a carrier frame 113, and a plurality of limiting modules 114. The heat dissipation components 12 are disposed on the supporting plate 111, the guide posts 112 are disposed on the supporting plate 111 at intervals, and the guide posts 112 penetrate through the supporting plate 111.

The carrying frame 113 is connected to the carrying plate 111, a plurality of connecting holes 1131 are formed in the carrying frame 113, the plurality of connecting holes 1131 correspond to the plurality of guide posts 112 one by one, the connecting holes 1131 are sleeved on the corresponding guide posts 112, and the plurality of heat dissipation components 12 are located in the carrying frame 113. The plurality of limiting modules 114 are arranged on the bearing frame 113, and the first workpiece is positioned under the action of the plurality of limiting modules 114.

In an embodiment, the carrier 111 is a rectangular plate, the number of the guide posts 112 is four, and the four guide posts 112 are located at four end corners of the carrier 111. The carrying frame 113 is rectangular, the number of the connecting holes 1131 is four, and when the carrying frame 113 is mounted on the carrying plate 111, the guide posts 112 are inserted into the corresponding connecting holes 1131 to position the carrying frame 113.

Thus, since the carrying frame 113 and the carrying plate 111 are of a split structure, the external manipulator can grasp the first workpiece and position the first workpiece on the carrying frame, then transfer the first workpiece and the carrying frame 113 to the carrying plate 111 integrally, and finally, after the first workpiece and the second workpiece are welded, the manipulator can transfer the carrying frame 113 and the welded first workpiece and second workpiece together. In the transfer process, the manipulator only needs to grasp the bearing frame and does not need to grasp the first workpiece, so that damage to the first workpiece caused by the manipulator or other transfer mechanisms is avoided.

Referring to fig. 2 and 8, in some embodiments, the limit module 114 includes a fool-proof block 1141, a locating pin 1142, two first limit blocks 1143, and a plurality of second limit blocks 1144. The fool-proof block 1141, the positioning pin 1142, the two first limiting blocks 1143 and the two second limiting blocks 1144 are circumferentially disposed on the peripheral sides of the plurality of heat dissipation components 12. The two first limiting blocks 1143 are arranged at intervals along the first direction, and the first limiting blocks 1143 are provided with bearing surfaces 1143a matched with the bottom surfaces of the first workpieces, and the two first limiting blocks 1143 are abutted against the first workpieces so as to limit the first workpieces in the first direction and bear the first workpieces. The first direction is shown as the X-axis of the three-dimensional coordinate axis in fig. 1.

The plurality of second limiting blocks 1144 are disposed on the carrying frame 113 at intervals along the second direction, in an embodiment, the number of the second limiting blocks 1144 is four, the four second limiting blocks 1144 are uniformly distributed on two sides of the first workpiece along the second direction, the four second limiting blocks 1144 are used for limiting the first workpiece along the second direction, and the first workpiece is not easy to deviate under the action of the first limiting blocks 1143 and the second limiting blocks 1144. The second direction is shown as the Y-axis of the three-dimensional coordinate axis in fig. 1.

The positioning pin 1142 is disposed on the carrying frame 113, and when the first workpiece is mounted on the carrying frame 113, the positioning pin 1142 is inserted into the first workpiece to precisely position the first workpiece.

The fool-proof block 1141 is disposed on the carrying frame 113 and spaced from the positioning pin 1142, and the fool-proof block 1141 is configured to be inserted into the first workpiece, so as to prevent a placement direction of the first workpiece from being misplaced.

Referring to fig. 2 and 9, in some embodiments, heat dissipation assembly 12 includes a fixed block 121, a contoured block 122, and an elastic member 123. Profiling block 122 is connected to fixing block 121 in a sliding mode, fixing block 121 is installed on bearing assembly 11, elastic piece 123 is installed in fixing block 121, one end of elastic piece 123 abuts against profiling block 122, the other end of elastic piece 123 abuts against bearing assembly 11, and elastic piece 123 enables profiling block 122 to protrude out of fixing block 121. In an embodiment, the fixing block 121 is mounted on the carrying plate 111, one end of the elastic member 123 abuts against the profiling block 122, and the other end of the elastic member 123 abuts against the carrying plate 111. Since the profiling block 122 is made of brass, the profiling block 122 is excellent in heat conductivity and wear resistance. Since the first workpiece is arc-shaped, the end of the profiling block 122 facing the pressing plate 21 is arc-shaped, so that the profiling block 122 can be attached to the first workpiece when the profiling block 122 abuts against the first workpiece. In other embodiments, the end surfaces of the profiling block 122 may be beveled.

In this way, the end surface of the profiling block 122 is set to be in a shape matching with the first workpiece, so that the profiling block 122 is tightly attached to the first workpiece, and the welding jig 100 can be used for positioning curved-surface workpieces, and the applicability of the welding jig 100 is improved. In addition, because the profiling block 122 can be tightly attached to the first workpiece, on one hand, the contact area between the profiling block 122 and the first workpiece is maximized, which is beneficial to heat dissipation of the first workpiece, and on the other hand, the profiling block 122 supports the first workpiece more firmly.

Referring to fig. 1, 10 and 11, in some embodiments, the welding jig 100 further includes a conveying mechanism 30. The conveying mechanism 30 is used for conveying the carrying frame 113 to the carrying plate 111. In one embodiment, the transmission mechanism 30 includes a frame 31, a motor 32, a driving gear 33, a driven gear 34, a chain 35, a driving roller 36, a conveyor belt 37, and a driving lever 38. The motor 32 is mounted on the frame 31, the motor 32 is a servo motor, and the servo motor is provided with a driver, so that an operator can control the motor 32 to move through a program. The number of the driving rollers 36 is plural, the driving rollers 36 are divided into two rows, and the driving rollers 36 in two rows are arranged in parallel. One end of the transmission rod 38 is connected to one of the transmission rollers 36 in one of the rows, and the other end of the transmission rod 38 is connected to the transmission roller 36 in the other row of transmission rollers 36. The number of the conveyor belts 37 is two, and the two conveyor belts 37 are respectively mounted on the two rows of the driving rollers 36. The driving gear 33 is connected with the motor 32, the driven gear 34 is mounted on one of the driving rollers 36, the chain 35 is mounted on the driving gear 33 and the driven gear 34, when the motor 32 is started, the driving gear 33 drives the driven gear 34 to rotate through the chain 35, the driven gear 34 drives the driving rollers 36 to rotate, and at the moment, the two conveying belts 37 move to enable the bearing frame 113 to move along the Y-axis direction. Wherein the Y-axis direction is shown as the three-dimensional coordinate axis in fig. 1. In other embodiments, two gears in the transmission mechanism 30 may be replaced by two pulleys, and the transmission mechanism 30 drives the conveyor belt 37 to move in a belt transmission manner.

Thus, as the transmission mechanism 30 is arranged on the welding jig 100, the welding jig 100 can be matched with the laser welding device to weld the first workpiece and the second workpiece, and can also convey the bearing frame 113 loaded with the first workpiece to the bearing plate 111, and as the transmission mechanism 30 replaces manual transportation, the manual operation is reduced, and the labor intensity of operators is reduced. By using the transmission rod 38, the transmission mechanism 30 can drive the two conveyor belts 37 to move simultaneously by using only one group of motors 32, thereby saving one group of motors 32.

Referring to fig. 1, 12 and 13, in some embodiments, the welding jig 100 further includes a lifting mechanism 40. The lifting mechanism 40 includes a base plate 41, a drive assembly 42, and a plurality of guide sleeves 43. The bottom plate 41 is disposed on a side of the carrying plate 111 facing away from the first workpiece, and the bottom plate 41 is specifically disposed on the frame 31. The guide sleeves 43 are arranged on the bottom plate 41 at intervals, the guide sleeves 43 are in one-to-one correspondence with the guide posts 112, and the guide posts 112 are slidably connected in the corresponding guide sleeves 43. The driving assembly 42 is mounted on the bottom plate 41 and connected to the carrying plate 111, and the driving assembly 42 is used for driving the carrying plate 111 to move up and down along the Z axis. The Z-axis direction is shown as the three-dimensional coordinate axis in fig. 1.

In one embodiment, the implementation process of the welding jig 100 is as follows: the operator firstly positions the first workpiece on the carrying frame 113, then conveys the carrying frame 113 to the upper side of the carrying plate 111 through the conveying mechanism 30, at this time, the driving assembly 42 drives the carrying plate 111 to ascend, when the carrying plate 111 contacts the carrying frame 113, the guide posts 112 are inserted into the corresponding connecting holes 1131, then the carrying plate 111 drives the carrying frame 113 to separate from the conveying mechanism 30 and enables the carrying frame 113 and the carrying plate 111 to ascend to a preset position together, and finally the pressing plate mechanism 20 covers the first workpiece to position the second workpiece. Thus, by the driving assembly 42, not only the carrying frame 113 and the carrying plate 111 can be automatically assembled together, but also the first workpiece can be automatically carried to the predetermined position for processing, and the whole process does not need manual operation, so that the welding jig 100 reduces the labor intensity of operators and improves the working efficiency.

In order to realize automatic operation of the welding jig 100, the welding jig 100 is provided with a position sensor 50, the position sensor 50 is mounted on the transmission mechanism 30, and may also be mounted on the bottom plate 41, when the position sensor 50 senses the carrying frame 113, the position sensor 50 transmits a signal to a peripheral controller (not shown), and the controller controls the lifting mechanism 40 to drive the carrying plate 111 to lift, so that the carrying plate 111 and the carrying frame 113 are assembled together.

When the carrier plate 111 is lifted to different heights, the carrier plate 111 is located at different stations, and each of the different stations can perform different processes. The supporting plate 111 is provided with a plurality of positioning sensors 60, and the positioning sensors 60 are photoelectric sensors. Each positioning sensor 60 corresponds to one station, the positioning sensor 60 is used for positioning the bearing plate 111, when the bearing plate 111 does not accurately move to the corresponding station, the positioning sensor 60 detects abnormality at this time, the positioning sensor 60 sends a signal to the controller, and the controller sends an alarm signal at this time. In addition, other inductors can be arranged on the periphery of the bearing plate, such as the inductor is used for inducing smoke in the welding process, so that the smoke alarm function is realized.

Referring to fig. 12 and 13, in some embodiments, the driving assembly 42 includes a driving member 421, a sliding member 422, and a guide member 423. The driving member 421 is specifically an air cylinder, the air cylinder is rotatably connected to the bottom plate 41, a piston rod of the air cylinder is rotatably connected to the sliding member 422, and a side of the sliding member 422 facing away from the air cylinder is connected to the carrying plate 111. The guide piece 423 is disposed on the bottom plate 41, the guide piece 423 is provided with an inclined guide surface 4231, when the bearing plate 111 needs to be lifted, the air cylinder pushes the sliding piece 422 to move, at this time, the sliding piece 422 slides upwards along the inclined guide surface 4231, and one side slides along the X-axis direction relative to the bearing plate 111, and at the same time, the air cylinder also rotates relative to the bottom plate 41. Finally, the sliding member 422 drives the bearing plate 111 to perform a lifting motion under the guiding action of the guiding member 423. The X-axis direction is shown as a three-dimensional coordinate axis in FIG. 1. In one embodiment, the slider 422 includes a first slider plate 4221 and a second slider plate 4222. The first sliding plate 4221 is connected with the bearing plate 111, the second sliding plate 4222 is connected with the first sliding plate 4221 in a sliding manner, the driving piece 421 is connected with the second sliding plate 4222 in a rotating manner, two guiding pieces 423 are arranged on two sides of the second sliding plate 4222, a pulley 4223 is arranged on the second sliding plate 4222, and the pulley 4223 slides along the guiding surface 4231. When the driving member 421 drives the second sliding plate 4222 to slide along the guide member 423, the second sliding plate 4222 slides relative to the first sliding plate 4221, and at this time, the first sliding plate 4221 moves up and down along the guide post 112 along with the carrier plate 111. Since the pulley 4223 is disposed between the guide surface 4231 and the second sliding plate 4222, on one hand, the pulley 4223 supports the second sliding plate 4222, and on the other hand, the pulley 4223 can reduce the friction force applied to the second sliding plate 4222 during sliding.

Thus, when the space between the bearing plate 111 and the bottom plate 41 is limited and the driving member 421 cannot be installed, the operator can adopt the installation mode to obliquely set the driving member 421 and rotationally connect the driving member 421 with the bottom plate 41, so that the problem that the installation space of the driving member 421 is insufficient is solved, and the purpose of lifting the bearing plate 111 is also realized.

Some embodiments provide a welding jig 100 that works substantially as follows:

firstly, the first workpiece is positioned on the bearing frame 113, then the bearing frame 113 is conveyed to the upper side of the bearing plate 111 through the conveying mechanism 30, at the moment, the driving piece 421 pushes the sliding piece 422 to move, the sliding piece 422 slides upwards obliquely along the guiding surface 4231, one side of the sliding piece 422 slides along the X-axis direction relative to the bearing plate 111, the bearing plate 111 moves upwards under the driving of the sliding piece 422, when the bearing plate 111 contacts the bearing frame 113, the guide posts 112 are spliced in the corresponding connecting holes 1131, and the profiling blocks 122 are abutted against the bottom surface of the first workpiece; then, the carrying plate 111 drives the carrying frame 113 to separate from the transmission mechanism 30 and enables the carrying frame 113 and the carrying plate 111 to rise to a preset position together; finally, the pressing plate mechanism 20 is covered on the first workpiece, and a plurality of second workpieces on the plurality of positioning assemblies 22 are abutted against the first workpiece under the action of the buffer 223, so that the positioning of the second workpieces is completed.

According to the welding jig 100 provided by the embodiment of the application, when the pressing plate mechanism 20 is covered on the first workpiece, the plurality of positioning assemblies 22 are used for simultaneously abutting the plurality of second workpieces on the first workpiece, and the plurality of second workpieces are simultaneously positioned, so that the position precision among the plurality of second workpieces is improved, and the precision after welding is further improved.

When welding the first workpiece and the second workpiece, the heat near the second workpiece is maximum, and defects are easy to occur on the first workpiece, so that waste products are caused. Because the heat dissipation component 12 corresponds to the positioning component 22, the heat dissipation component 12 can conduct heat near the second workpiece in real time, and in addition, the shape of the end surface of the profiling block 122 is attached to the first workpiece, so that the contact area of the profiling block 122 is increased, the heat dissipation efficiency is higher, and defects on the first workpiece caused by untimely heat dissipation are avoided.

In addition, since the welding jig 100 is provided with the transmission mechanism 30 and the lifting mechanism 40, manual operation of an operator is avoided, labor intensity of the operator is reduced, and work efficiency is improved.

It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application.

Claims (10)

1. A welding jig for positioning and joining a second workpiece to a first workpiece, comprising:

support plate mechanism includes:

the bearing assembly is used for positioning the first workpiece;

the plurality of heat dissipation assemblies are arranged on the bearing assembly at intervals and are used for being abutted against the bottom surface of the first workpiece so as to support and dissipate heat of the first workpiece;

a platen mechanism comprising:

the pressing plate is arranged opposite to the bearing assembly, and a plurality of through holes are formed in the pressing plate;

the positioning components are arranged on the pressing plate at intervals, correspond to the through holes one by one, and are used for fixing the second workpiece penetrating through the corresponding through holes;

the pressing plate is used for being movably covered on the first workpiece, so that the positioning assemblies and the heat dissipation assemblies are in one-to-one correspondence, the positioning assemblies and the heat dissipation assemblies are located on two opposite sides of the first workpiece, and the second workpiece is abutted to the first workpiece.

2. The welding jig of claim 1, wherein,

the positioning assembly includes:

the fixing piece is arranged on one side of the pressing plate, which is away from the first workpiece;

the positioning module is connected to the fixing piece in a sliding manner and is used for fixing the second workpiece;

the buffer piece is sleeved on the positioning module, one end of the buffer piece is abutted to the fixing piece, the other end of the buffer piece is abutted to the positioning module, and the buffer piece is used for driving the positioning module to drive the second workpiece to elastically abut to the first workpiece.

3. The welding jig of claim 2, wherein,

the positioning module comprises:

the positioning piece is connected to the fixing piece in a sliding mode, the buffer piece is sleeved on the positioning piece, one end of the buffer piece is abutted to the fixing piece, the other end of the buffer piece is abutted to the positioning piece, a positioning hole, an annular groove and a plurality of mounting holes are formed in one end, away from the fixing piece, of the positioning piece, the positioning hole is formed in the axial direction of the positioning piece, the positioning hole is used for positioning the second workpiece, the annular groove is formed in the outer side of the positioning piece, the mounting holes are formed in the bottom of the annular groove at intervals, and the mounting holes are communicated with the positioning hole;

and the elastic clamping piece is arranged in the annular groove and used for clamping the second workpiece.

4. The welding jig of claim 3, wherein,

the positioning module further comprises:

the positioning block is arranged in the positioning hole and is provided with a protruding portion, and the protruding portion is used for being inserted into the second workpiece to position the second workpiece.

5. The welding jig of claim 1, wherein,

the heat dissipation assembly includes:

the fixed block is connected with the bearing assembly;

the profiling block is slidably mounted on the fixed block, and one end of the profiling block, which faces the pressing plate, is used for being matched with the bottom surface of the first workpiece;

the elastic piece is arranged in the fixed block, one end of the elastic piece is abutted to the bearing assembly, the other end of the elastic piece is abutted to the profiling block, and the elastic piece is used for enabling the profiling block to protrude out of the fixed block so as to be abutted to the first workpiece.

6. The welding jig of claim 1, wherein,

the carrier assembly includes:

the heat dissipation components are arranged on the bearing plate;

the guide posts penetrate through the bearing plate and are arranged at intervals;

the bearing frame is provided with a plurality of connecting holes, the connecting holes are in one-to-one correspondence with the guide posts, the connecting holes are sleeved on the corresponding guide posts, and the heat dissipation components are positioned in the bearing frame;

and the limiting module is arranged on the bearing frame and used for limiting the first workpiece.

7. The welding jig of claim 6, wherein,

the limit module comprises:

the two first limiting blocks are arranged on the bearing frame at intervals along a first direction, are provided with bearing surfaces matched with the bottom surfaces of the first workpieces, and are used for abutting against the first workpieces so as to limit the first workpieces in the first direction and bear the first workpieces;

the plurality of second limiting blocks are arranged on the bearing frame at intervals along a second direction and are used for being abutted against the first workpiece so as to limit the first workpiece in the second direction, and the first direction is perpendicular to the second direction;

the positioning pin is arranged on the bearing frame and is used for being inserted into the first workpiece to position the first workpiece;

the fool-proof block is arranged on the bearing frame and is arranged at intervals with the positioning pin and is used for being inserted into the first workpiece to correct the placing direction of the first workpiece.

8. The welding jig of claim 6, wherein,

the welding jig still includes:

and the transmission mechanism is used for transmitting the bearing frame to the bearing plate.

9. The welding jig of claim 6, wherein,

the welding jig still includes lifting mechanism, lifting mechanism includes:

the bottom plate is arranged on one side, away from the first workpiece, of the bearing plate;

the driving assembly is arranged on the bottom plate, connected with the bearing plate and used for driving the bearing plate to do lifting motion;

the guide sleeves are in one-to-one correspondence with the guide posts and are in sliding connection, and the guide sleeves are used for guiding the bearing assembly.

10. The welding jig of claim 9, wherein,

the drive assembly includes:

the driving piece is rotationally connected with the bottom plate;

the sliding piece is rotationally connected with the driving piece and is connected with the bearing plate;

the guide piece is arranged on the bottom plate, an inclined guide surface is arranged on the guide piece, and the guide surface is used for guiding the sliding piece;

the sliding piece slides along the guide surface under the drive of the driving piece so as to drive the bearing plate to do lifting motion.