CN113878284A - Table chair frame automatic assembly welding system - Google Patents
Table chair frame automatic assembly welding system Download PDFInfo
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- CN113878284A CN113878284A CN202111307640.3A CN202111307640A CN113878284A CN 113878284 A CN113878284 A CN 113878284A CN 202111307640 A CN202111307640 A CN 202111307640A CN 113878284 A CN113878284 A CN 113878284A
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- 238000003466 welding Methods 0.000 title claims abstract description 144
- 230000007246 mechanism Effects 0.000 claims abstract description 101
- 238000001514 detection method Methods 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims description 25
- 230000007306 turnover Effects 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 6
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000017105 transposition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000010405 clearance mechanism Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
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Abstract
The invention discloses an automatic assembly welding system for a table and chair frame, which comprises a rod piece feeding detection device, a connecting piece feeding detection device, an assembly device and a welding device, wherein material conveying manipulators are arranged between devices with reciprocating materials, the welding device comprises a welding fixture, the welding fixture comprises a fixture support and a fixture panel, a rotating motor is fixedly connected onto the fixture panel, the rotating motor is connected with the fixture panel, an automatic opening mechanism is arranged on the fixture panel, the automatic opening mechanism comprises a motor, a cam and two sliding blocks, the motor is fixedly connected with the fixture panel, an output shaft of the motor is in transmission connection with the cam, the two sliding blocks are symmetrically arranged on two sides of the cam, and the sliding blocks are in sliding connection with the fixture panel. According to the invention, the cam-slider automatic opening mechanism is arranged on the welding fixture of the desk and chair frame, and the hinged end of the desk and chair frame without the connecting sheet is opened in the welding process, so that the size imbalance caused by plastic deformation due to the welding melting state can be effectively avoided.
Description
Technical Field
The invention relates to an automatic assembling and welding system for a table and chair frame, and belongs to the technical field of assembling and welding of table and chair frames.
Background
The desk and chair frame comprises two identical hollow square tubes, an end connecting piece and a middle connecting piece, wherein the two hollow square tubes are arranged in parallel and in a mirror image mode, the end connecting piece is located at one end of each hollow square tube and is perpendicular to the two hollow square tubes, the two ends of the end connecting piece are welded with the two hollow square tubes respectively, the middle connecting piece is located in the middle of each hollow square tube and is perpendicular to the two hollow square tubes, and the two ends of the middle connecting piece are welded with the two hollow square tubes respectively.
The cross-section of two connection pieces is the cell type, and two sides of cell type are used for the welding.
The one end of hollow square pipe not welded connection piece is used for articulated table chair panel, is provided with two articulated hole sites, and is located the articulated hole of tip and sets up the incision of stepping down by side.
Because the one end of desk chair frame is used for connecting the table chair panel, does not set up the connecting plate, simultaneously because welding melting can produce plastic deformation, this one end that just leads to not establishing the connecting plate produces the deviation because of unable support and design size when the welding, leads to yields greatly reduced, and raw materials cost, operating time cost increase, production efficiency reduces. .
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide an automatic assembling and welding system for a table and chair frame.
In order to achieve the above object, the present invention provides an automatic assembling and welding system for a desk and chair frame, comprising: the rod piece feeding detection device is used for receiving and detecting the rod pieces from the material box;
the connecting sheet feeding detection device is used for receiving and detecting the connecting sheet from the material box;
the assembling device is used for receiving the qualified material pieces detected and controlled by the rod piece feeding detection device and the connecting piece feeding detection device and completing the pre-assembly of the material pieces before welding;
the welding device is used for receiving the pre-assembled material piece and welding the material piece;
material conveying manipulators are arranged between the devices with the material parts coming and going;
the welding device comprises a welding fixture, the welding fixture comprises a fixture support and a fixture panel which are connected in a rotating mode, limiting mechanisms used for jacking and pressing two side parts of a table and chair frame to be welded are arranged on two sides of the fixture panel, a rotating motor is fixedly connected onto the fixture support, and an output shaft of the rotating motor is connected with the fixture panel in a transmission mode and drives the fixture panel to rotate;
the automatic opening mechanism for propping rod pieces on two sides of the table and chair frame is arranged on the clamp panel and comprises a motor, a cam and a sliding block, the motor is fixedly connected with the clamp panel, the output shaft of the motor is in transmission connection with the cam, the cross section of the cam is of a symmetrical structure, the sliding block is provided with two parts and is symmetrically arranged on two sides of the cam, the sliding block is in sliding connection with the clamp panel, and the motor acts to drive the cam to prop the rod pieces through the sliding block.
The welding device further comprises a welding support frame and welding guns, wherein the welding support frame is provided with two groups of welding fixtures in parallel, each welding fixture is connected with the welding support frame through a guide rail screw transmission mechanism, the welding guns are arranged at two ends of the welding support frame, which are located at the stroke of the welding fixture, and each welding gun is connected with the welding support frame through a guide rail screw transmission mechanism;
the clamp panel is provided with two fixed supporting blocks for supporting the shape of the desk and chair frame from the inside, and the two fixed supporting blocks are respectively positioned at two connecting pieces of the desk and chair frame to be welded; and the outer sides of the two rod pieces are respectively provided with a limiting mechanism, and the limiting mechanisms adopt jacking cylinders.
Furthermore, the rod piece feeding detection device comprises a supporting frame, a rod piece feeding mechanism and a detection clearing and retreating mechanism, wherein one surface of the supporting frame is provided with a cache plate group for temporarily storing the rod pieces, the cache plate group comprises two cache plates, and the two cache plates are arranged in a mirror image manner;
temporary storage grooves for placing rod pieces are formed in the two buffer plates, the two temporary storage grooves arranged in a mirror image mode between the two adjacent buffer plates form a group, and two ends of each rod piece are located in the two temporary storage grooves arranged in the group;
the number of the groups of the temporary storage grooves is more than 3.
Further, a group of temporary storage grooves at one end of the cache plate are preliminary centering grooves, and a group of temporary storage grooves at the other end of the cache plate are final centering grooves;
each preliminary centering groove is provided with a preliminary centering cylinder fixedly connected with a supporting frame, a cylinder rod of the preliminary centering cylinder is connected with a preliminary centering block, the preliminary centering block is provided with a preliminary centering surface parallel to the plate surface of the buffer plate, the projection of the preliminary centering surface is positioned on the end surface of the rod piece and the outer surface of the buffer plate, the preliminary centering cylinder acts to drive the preliminary centering surface to push the rod piece to be preliminarily centered, and after preliminary centering, a gap exists between the preliminary centering surface and the end surface of the rod piece;
each final centering groove all sets the final cylinder placed in the middle that links firmly braced frame, the jar pole of the final cylinder placed in the middle is connected with final centering piece, final centering piece possesses a final centering face that is on a parallel with the buffer board face, the projection of final centering face is located the terminal surface of member and the surface of buffer board, and final cylinder action placed in the middle drives final centering face and promotes the final centering of member, and final centering back, final centering face and member terminal surface laminating.
Further, the rod feeding mechanism comprises a propelling mechanism and a lifting mechanism, the propelling mechanism comprises a propelling cylinder fixedly connected with the supporting frame and a propelling plate connected with the propelling cylinder, the propelling plate is arranged on the supporting frame in a sliding mode, and the sliding direction of the propelling plate is the same as the arrangement direction of the rods;
the lifting mechanism is arranged on the pushing plate and comprises a lifting cylinder and a lifting plate connected with a cylinder rod of the lifting cylinder, and the moving direction of the lifting cylinder faces to the rod piece;
the lifting plate is provided with two mirror-image parallel positioning strips, each positioning strip is provided with a positioning groove for accommodating a rod piece, the two mirror-image positioning grooves form a group, each group of positioning grooves accommodates one rod piece, and the number of the groups of the positioning grooves is 1 less than that of the rod pieces.
Furthermore, the detection clearing and retreating mechanism comprises a position detector group and a clearing and retreating device, the position detector group comprises three photoelectric detectors fixedly connected with a support frame and positioned in the primary centering groove, and the three photoelectric detectors respectively pass through two hinge holes and a notch of the table and chair frame;
the clearing device comprises a clearing cylinder and a wedge-shaped rolling platform connected with a cylinder rod of the clearing cylinder, the inclined surface of the wedge-shaped rolling platform faces to the rod piece of the primary centering groove, and a plurality of rollers are arranged along the inclined surface direction of the wedge-shaped rolling platform.
Furthermore, the connecting piece feeding detection device comprises a vibration disc and a clamping and overturning mechanical arm, and a conveying mechanism is arranged between the vibration disc and the clamping and overturning mechanical arm;
a discharge hole of the vibration disc is provided with a screening plate, and the screening plate allows a connecting plate with an inward notch to pass through;
the turnover manipulator comprises a turnover mechanism and a clamping mechanism, the turnover mechanism comprises a motor and a turnover shaft in transmission connection with the motor, and the motor drives the turnover shaft to turn over, and the turnover shaft rotates 180 degrees each time;
the clamping mechanisms are arranged in two, and are arranged on the turnover mechanism in a centrosymmetric mode.
Furthermore, the assembling devices are provided with a plurality of assembling devices which are connected with a turntable together;
the assembling device comprises an assembling base plate and clamping devices arranged on the assembling base plate, each rod piece is at least provided with three groups of clamping devices, and the two clamping devices are one group and are respectively used for clamping two side surfaces of the rod piece;
two clamping devices are arranged on one side of the table and chair frame in the length direction, and idler wheels which are convenient to disassemble and assemble are arranged on the other side of the table and chair frame.
Furthermore, a plurality of welding devices are arranged in parallel, a material conveying manipulator between the assembling device and the welding devices is provided with a guide rail lead screw transmission mechanism, and the working stroke of the guide rail lead screw transmission mechanism is the same as the width of parallel stations of the welding devices;
the material conveying manipulator between the assembling device and the welding device comprises a grabbing positioning mechanism for secondarily positioning the to-be-welded table and chair frame behind the assembling device.
Furthermore, a material conveying manipulator between the welding device and the blanking box is provided with a guide rail lead screw transmission mechanism, and the working stroke of the guide rail lead screw transmission mechanism is the same as the width of parallel stations of the welding device.
The invention achieves the following beneficial effects:
according to the invention, the cam-slider automatic opening mechanism is arranged on the welding fixture of the desk and chair frame, and the hinged end of the desk and chair frame, which is not provided with the connecting sheet, is opened in the welding process, so that the size imbalance caused by plastic deformation due to the welding melting state can be effectively avoided;
the automatic cam-slider opening mechanism is adjusted by motor control, is quicker and more accurate than manual adjustment, can effectively reduce the reject ratio caused by manual adjustment, and improves the production efficiency.
Drawings
FIG. 1 is a schematic plane structure diagram of an automatic assembling and welding system for a desk and chair frame according to an embodiment of the present invention;
FIG. 2 is a perspective view of a rod loading detection device in an automatic assembly welding system for table and chair frames according to an embodiment of the present invention;
FIG. 3 is a perspective view of a rod feeding mechanism and a detecting clearing mechanism in an automatic assembling and welding system for a desk and chair frame according to an embodiment of the present invention;
FIG. 4 is a perspective view of a rod feeding mechanism in an automatic assembling and welding system for desk and chair frames according to an embodiment of the present invention;
FIG. 5 is a perspective view of a detection clearance mechanism in an automatic assembly welding system for desk and chair frames according to an embodiment of the present invention;
FIG. 6 is a perspective view of a connecting piece feeding detection device in an automatic assembling and welding system for desk and chair frames according to an embodiment of the present invention;
FIG. 7 is a perspective view of a clamping and flipping robot in an automatic assembly and welding system for desk and chair frames according to an embodiment of the present invention;
FIG. 8 is a perspective view of an assembling device in an automatic assembling and welding system for desk and chair frames according to an embodiment of the present invention;
FIG. 9 is a perspective view of an assembly device and a turntable of an automatic assembly and welding system for desk and chair frames according to an embodiment of the present invention;
FIG. 10 is a schematic view of an internal structure of a welding device in an automatic assembling and welding system for desk and chair frames according to an embodiment of the present invention;
FIG. 11 is a first perspective view of a welding fixture and a lead screw transmission mechanism of a guide rail in an automatic assembly welding system for a desk and chair frame according to an embodiment of the present invention;
fig. 12 is a second perspective view of a welding fixture and a guide rail screw transmission mechanism in an automatic assembly welding system for a table and chair frame according to an embodiment of the present invention.
In the figure: 100. a rod feeding detection device; 110. a support frame; 111. a cache board; 112. a temporary storage tank; 113. a primary centering cylinder; 114. finally centering the cylinder; 120. a rod feeding mechanism; 121. propelling the cylinder; 122. a propulsion plate; 123. a lifting cylinder; 124. lifting the plate; 125. a positioning bar; 126. positioning a groove; 130. detecting a clearing mechanism; 131. a photodetector; 132. clearing and retreating the cylinder; 133. a wedge-shaped roller table; 200. connecting a sheet feeding detection device; 210. a vibrating pan; 220. clamping and overturning the mechanical arm; 221. a turning shaft; 300. assembling the device; 310. assembling a substrate; 320. a clamping device; 400. a welding device; 410. welding a support frame; 420. welding a clamp; 421. a clamp panel; 422. a cam; 423. a slider; 424. fixing a supporting block; 425. the jacking cylinder; 430. a clamp bracket; 431. the motor is rotated.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention provides an automatic assembling and welding system for a table and chair frame, which comprises a rod piece feeding detection device 100, a connecting piece feeding detection device 200, an assembling device 300 and a welding device 400, wherein square tube feeding devices are symmetrically arranged at two ends of the assembling device 300, the connecting piece feeding detection device 200 is positioned at one side of the assembling device 300 and positioned between the two rod piece feeding detection devices 100, the welding device 400 is positioned at one side of the assembling device 300 and is opposite to the connecting piece feeding detection device 200, and feeding between a bin and the rod piece feeding detection device 100, feeding between the connecting piece feeding detection device 200 and the assembling device 300, feeding between the assembling device 300 and the welding device 400, and discharging between the welding device 400 and the bin are all completed by a mechanical arm, as shown in figures 1 to 12.
As shown in fig. 2, the rod feeding detection device 100 includes a supporting frame 110, a rod feeding mechanism 120 and a detection clearing device, the supporting frame 110 is a light alloy frame structure, the rod feeding mechanism 120 and the detection clearing device 130 are used for fixing the rod feeding mechanism 120, one side of the supporting frame 110 is provided with a buffer board group, the buffer board group is used for temporarily storing square tubes, the buffer board group includes two buffer boards 111 arranged by mirror images, a plurality of temporary storage slots 112 used for temporarily storing square tubes are uniformly distributed on the two buffer boards 111, each two temporary storage slots 112 arranged by mirror images are a group, in order to meet the requirements of next procedure for taking a product and detecting the procedure, time conflicts between procedures are avoided simultaneously, the number of the groups of the temporary storage slots 112 is greater than three, the number of the temporary storage slots 112 in this embodiment is preferably 6, 6 square tubes can be placed simultaneously, the square tubes are connected across the two buffer boards 111, and both ends are respectively located in the temporary storage slots 112.
The chamfer has all been seted up to each groove 112 of keeping in the notch, but makes things convenient for square pipe to place in time self-correction when the deviation appears.
A group of temporary storage grooves 112 at one end of the buffer plate group are preliminary centering grooves, each preliminary centering groove is provided with a preliminary centering cylinder 113, the preliminary centering cylinder 113 is a single-rod cylinder and is fixedly connected with the supporting frame 110 through a bolt, a cylinder rod of the preliminary centering cylinder 113 is connected with a preliminary centering block, the overall shape of the preliminary centering block is not limited, the preliminary centering block is provided with a preliminary centering surface parallel to the surface of the buffer plate 111, the preliminary centering surface is vertical to the moving direction of the cylinder rod of the preliminary centering cylinder 113, the projection of the preliminary centering surface is positioned on the end surface of the square tube and the surface of the buffer plate 111, the preliminary centering cylinder 113 drives the preliminary centering block to move, so that the preliminary centering surface is coincided with the surface of the buffer plate 111, the square tube is pushed to move towards the middle part at the same time, after the square tube is placed in the preliminary centering grooves, the preliminary centering can be completed through the above processes, a gap exists between the end surface of the square tube and the preliminary centering surface, the square tube can be conveniently moved for transposition, and the phenomenon of blocking caused by inclination during transposition is avoided.
A group of temporary storage grooves 112 positioned at the other end of the buffer plate group are final centering grooves, each final centering groove is provided with a final centering cylinder 114, a double-rod cylinder is selected for the final centering cylinder 114 for ensuring the accuracy of the centering position, the support frame 110 is fixedly connected through a bolt, the cylinder rod of the final centering cylinder 114 is connected with a final centering block, the overall shape of the final centering block is not limited, the final centering block is provided with a final centering surface parallel to the plate surface of the buffer plate 111, the final centering surface is vertical to the movement direction of the cylinder rod of the final centering cylinder 114, the outer sides of the two final centering grooves are both provided with centering grooves parallel to the final centering surface in a concave manner, the distance between the bottom surfaces of the two pairs of centering grooves is equal to the length of a square pipe, the projection of the final centering surface is positioned on the end surface of the square pipe and the bottom surface of the centering groove, the final centering cylinder 114 drives the final centering block to move, so that the final centering surface is coincided with the groove bottoms of the centering grooves, meanwhile, the square tube is overlapped with the end face of the square tube, and after the square tube is placed in the final centering groove, final centering can be completed through the processes.
As shown in fig. 2 to 4, a support beam is arranged inside the support frame 110, a platform plate is arranged on the support beam, the platform plate line is parallel to the buffer plate 111, the rod feeding mechanism 120 is arranged on the platform plate, the rod feeding mechanism 120 comprises a pushing mechanism and a lifting mechanism, and the pushing mechanism acts after the lifting mechanism lifts the square tube to complete feeding of the square tube.
The propulsion mechanism comprises a propulsion cylinder 121 and a propulsion plate 122, the propulsion plate 122 is slidably arranged on the platform plate, the propulsion cylinder 121 is fixedly connected to the platform plate through bolts, a cylinder rod of the propulsion cylinder 121 is connected with the propulsion plate 122, the cylinder rod of the propulsion cylinder 121 moves to drive the propulsion plate 122 to move along the arrangement direction of the square pipes, the stroke of the propulsion cylinder 121 is the same as the distance between two adjacent square pipes, and the propulsion cylinder 121 is preferably a single-shaft thin-type guide rod cylinder in the embodiment.
The lifting mechanism comprises a lifting cylinder 123 and a lifting plate 124, the lifting cylinder 123 is fixedly connected with the pushing plate 122 through a bolt, a cylinder rod of the lifting cylinder 123 faces a square pipe and is perpendicular to the length direction of the square pipe, the cylinder rod of the lifting cylinder 123 is connected with the lifting plate 124, the lifting plate 124 is located on the lower portion of the square pipe and is parallel to the square pipe, the cylinder rod of the lifting cylinder 123 moves to drive the lifting plate 124 to jack the square pipe, and the lifting cylinder 123 ensures lifting stability, and preferably is a three-axis thin guide rod cylinder.
The lifting plate 124 is used for arranging a feeding fixing device on one side of a lifting square pipe, the feeding fixing device comprises a detection switch, a clamping cylinder and two positioning strips 125 arranged in a mirror image mode, the two positioning strips 125 are positioned between the two cache plates 111 and are both arranged in parallel with the cache plates 111, the two positioning strips 125 are fixedly connected with the lifting plate 124 through bolts, a plurality of groups of positioning grooves 126 with the same parameters as the temporary storage grooves 112 are formed in the two positioning strips 125, and as the pushing cylinder 121 only has one stroke, and the stroke is the distance between the two adjacent square pipes, namely the distance between each group of positioning grooves 126, the number of the groups of positioning grooves 126 is 1 less than that of the temporary storage grooves 112, and the number of the groups of the positioning grooves 126 is preferably 5 in the embodiment; detection switch and die clamping cylinder are located between two location strips 125, and each constant head tank 126 department of a location strip 125 all disposes detection switch, and proximity switch is chooseed for use to detection switch, does not produce the contact with square pipe, and each constant head tank 126 department of another location strip 125 all disposes die clamping cylinder, and die clamping cylinder chooses for use the clamping jaw cylinder, and the side pipe is pressed from both sides tightly from square pipe, and detection switch and die clamping cylinder cooperation in every group constant head tank 126 set up: the square tube is placed into the positioning groove 126, the detection switch detects the square tube, and the clamping cylinder acts to clamp the square tube.
When removing square pipe, lifting cylinder 123 moves, lifting cylinder 123 will keep in the square pipe jack-up in the groove 112, square pipe is higher than buffer board 111 after lifting up, avoid producing interference with buffer board 111, square pipe falls into constant head tank 126, detection switch detects square pipe, die clamping cylinder is tight with square pipe clamp, it impels cylinder 121 to advance to next buffer groove 112 top, die clamping cylinder relaxs, lifting cylinder 123 descends, square pipe falls into temporary storage groove 112, after the strip 125 that awaits the position breaks away from the contact completely with square pipe, impel cylinder 121 to move, drive lifting mechanism through impel board 122 and reset, with this completion side pipe feeds the action of moving.
The detection clearing and retreating mechanism 130 comprises a position detector group and a clearing and retreating device, the detector group comprises a vacancy detector and three direction detectors, the vacancy detector is positioned between the two buffer plates 111 and fixedly connected with the buffer plates 111 through bolts, each temporary storage groove 112 of one buffer plate 111 is provided with the vacancy detector for monitoring whether each temporary storage groove 112 has a vacancy or not, a square tube does not interfere with the vacancy detector, and the vacancy detector is preferably a proximity switch in the embodiment; three direction detector all links firmly with braced frame 110 through panel, whether the square pipe that is arranged in the groove in the preliminary centre of detection places the direction correct, three direction detector all is located one side of preliminary centre groove, three direction detector is photoelectric detector 131, the preferred diffuse reflection ware of this embodiment, the light beam direction of three direction detector all is perpendicular with the length direction who manages the side, two hinge holes of managing are passed respectively to the light beam of two direction detectors, the light beam of third direction detector passes the notch department of stepping down of square pipe, if arbitrary detection light beam of three direction detector is sheltered from by the pipe shaft of square pipe, diffuse reflection signal just can be received to this direction detector, judge that the direction of square pipe places the mistake.
Clear device that moves back is including clear cylinder 132 and wedge rolling platform 133 that moves back, clear cylinder 132 that moves back links firmly braced frame 110 through the bolt, clear cylinder 132 that moves back is located preliminary groove lower extreme that centers in, clear cylinder rod towards square pipe that moves back cylinder 132, clear cylinder rod that moves back cylinder 132 is connected with wedge rolling platform 133, wedge rolling platform 133 is provided with a plurality of gyro wheels along the sloping platform direction, when judging the square pipe direction mistake, clear cylinder 132 that moves back moves, drive wedge rolling platform 133 upwards, the square pipe that drives preliminary groove direction mistake in centering lifts up, simultaneously because wedge rolling platform surface slope, the square pipe of direction mistake just can roll out automatically under the assistance of gyro wheel.
As shown in fig. 6 to 7, connection piece detection device includes vibration dish 210, belt transport mechanism, centre gripping upset manipulator 220, the other sieve flitch that sets up of discharge gate of vibration dish 210 for screen out the notch towards the outside connection piece of vibration dish 210, the material mouth is up when guaranteeing the connection piece ejection of compact, the distance between sieve flitch and the vibration dish 210 ejection of compact track can hold the connection piece that the notch inwards and pass through, can not hold the connection piece outwards of notch and pass through, the connection piece that the notch inwards can be sieved back to in the vibration dish 210.
The belt conveying mechanism is arranged at a discharge port of the vibration disc 210 and used for receiving and conveying the connecting sheet, a feed port of the belt conveying mechanism is used for receiving the connecting plate output by the vibration disc 210, a discharge port of the belt conveying mechanism is provided with a discharge sensor and used for detecting whether the connecting sheet reaches the discharge port, and the discharge sensor preferably uses a proximity switch in the embodiment.
The clamping and overturning manipulator 220 comprises an overturning mechanism, a positioning mechanism and a clamping mechanism, the overturning mechanism comprises a servo motor and an overturning shaft 221, the servo motor is connected with the overturning shaft 221 through a toothed belt, the servo motor drives the overturning shaft 221 to move through the toothed belt, and the overturning shaft 221 rotates 180 degrees at each time.
Positioning mechanism sets up in one side of trip shaft 221, and positioning mechanism includes location cylinder and a pair of locating plate, and two locating plate mirror images set up in trip shaft 221, have all seted up the locating hole on each locating plate, and the axis of each locating hole all sets up with trip shaft 221 parallel, and the fixed setting of location cylinder sets up the cylinder pole and the locating hole cooperation of location cylinder: after the overturning shaft 221 rotates 180 degrees, the cylinder rod of the positioning cylinder acts and extends into one positioning hole to perform auxiliary positioning.
Fixture includes telescopic cylinder and centre gripping cylinder, telescopic cylinder is two and a set of and centrosymmetric setting, the preferred three telescopic cylinder of group that set up of this embodiment, telescopic cylinder links firmly trip shaft 221 through the bolt, telescopic cylinder jar rod's direction of motion is perpendicular with trip shaft 221's axis, be provided with the connecting plate on telescopic cylinder's the jar pole, centre gripping cylinder sets up in the connecting plate, set up contact switch on fixture's the clamping jaw, fixture is when the centre gripping work piece, the contact switch contact senses the work piece, then fixture tightens up, press from both sides the work piece tightly, for stationarity and accuracy nature when guaranteeing the motion of centre gripping cylinder, the preferred telescopic cylinder of this embodiment is the thin guide arm cylinder of triaxial.
After discharge sensor detected the connection piece, servo motor drives trip shaft 221 through the cog belt and rotates 180, the cylinder pole of location cylinder stretches into in the locating hole and carries out assistance-localization real-time, then the telescopic cylinder action under the condition of guaranteeing that centre gripping cylinder opens, it is close to the connection piece to drive centre gripping cylinder, treat that centre gripping cylinder is close to the back, centre gripping cylinder tightens up behind fixture's proximity switch sensing connection piece, accomplish the centre gripping work of work piece, then controller control location cylinder pole is withdrawed, trip shaft 221 drives the rotatory 180 of connection piece, the connection piece is located the upper portion of trip shaft 221 this moment, so that get into next process.
As shown in fig. 8 to 9, the assembling device 300 includes an assembling substrate 310 and clamping devices 320 disposed on the assembling substrate 310, the assembling substrate 310 is provided with a plurality of electromagnets for adsorbing and fixing the square tubes, in this embodiment, it is preferable that one square tube is provided with three electromagnets for adsorbing and fixing two ends and a middle position of the square tube, each square tube is provided with three groups of clamping devices 320 respectively located at two ends and a middle position of the square tube, two clamping devices 320 are in one group and respectively clamped at two sides of the square tube in the length direction, one side of the square tube in the length direction is provided with two clamping devices 320, and the other side is provided with rollers for facilitating disassembly and assembly.
The assembling device 300 is provided with a plurality of parts and is jointly connected with a rotary table, the assembling devices 300 are evenly arranged along the circumferential direction of the rotary table, the rotary table drives the assembling device 300 to rotate, the assembling device 300 is placed on the connecting piece, the material level on the connecting piece and the material level on the two square pipes are pre-assembled, and then the pre-assembled table and chair frame is placed at the position of taking the next procedure so as to carry out the next procedure.
As shown in fig. 10 to 12, the welding device 400 includes a welding support frame 410, two sets of welding jigs 420 and welding guns, the welding jigs 420 and the welding guns are disposed on the welding support frame 410, the welding support frame 410 is disposed with two sets of welding jigs 420 in parallel, each welding jig 420 is connected to the welding support frame 410 through a guide rail lead screw transmission mechanism, the guide rail lead screw transmission mechanism of the welding jigs 420 operates to drive the welding jigs 420 to move along the length direction of the lead screw for switching the welding stations, the welding guns are disposed at both ends of the moving direction of the welding jigs 420, the welding guns are connected to the welding support frame 410 through the guide rail lead screw transmission mechanisms, the guide rail lead screw transmission mechanisms of the welding guns operate to drive the welding guns to move between the two welding jigs 420, after the welding work of a single welding jig 420 station is completed, the welding jigs are directly switched to another welding jig 420 station for welding, and the waiting time for feeding and blanking brought by the single welding jig 420 can be effectively reduced, the efficiency of welding work is improved.
The welding fixture 420 comprises a fixture support 430, a fixture panel 421, a jacking cylinder 425 and a cam 422 opening mechanism, wherein the fixture support 430 is rotatably connected with the fixture panel 421, a rotating motor 431 is fixedly connected to the fixture support 430 through bolts, an output shaft of the rotating motor 431 is connected with the fixture panel 421, the rotating motor 431 rotates to drive the fixture panel 421 to rotate, the fixture support 430 is connected with the welding support frame 410 through a guide rail screw transmission mechanism, the fixture panel 421 is provided with an electromagnet for adsorbing a part to be welded, each square tube is provided with three electromagnets, the positions of the electromagnets on the fixture panel 421 correspond to the two ends and the middle of the square tube respectively, each connecting piece is provided with one electromagnet, and the positions of the electromagnets on the fixture panel 421 correspond to the middle of each connecting piece respectively; the clamp panel 421 is provided with two fixing support blocks 424, and the two fixing support blocks 424 are respectively located at two connecting pieces of the to-be-welded desk and chair frame to support the shape of the desk and chair frame from the inside; the outer sides of the two square pipes are provided with jacking cylinders 425 which tightly jack the table and chair frames from the outside; the two fixing blocks are matched with the two clamping cylinders to form an inner-supporting and outer-jacking structure, and the material piece to be welded is fixed;
in view of the structure of the desk and chair frame: the hinged end of the device is not provided with a connecting sheet, so plastic deformation can be generated in the welding and melting process, the hinged end of the device is provided with an automatic opening mechanism, the automatic opening mechanism comprises a speed reducing motor, a cam 422 and a slide block 423, the cross section of the cam 422 is oval, the speed reducer is fixedly connected with a clamp panel 421 through a bolt, the output end of the speed reducer is connected with the cam 422 through a shaft, the speed reducer acts to drive the cam 422 to rotate, the two ends of the cam 422 are respectively provided with the slide block 423, the two slide blocks 423 are symmetrically arranged, the two slide blocks 423 are respectively connected with the clamp panel 421 in a sliding mode, the cam 422 rotates to drive the two slide blocks 423 to slide, the two slide blocks 423 open the square tube from inside to outside, so that the size requirement of the desk and chair frame can be ensured during welding, and the device can replace the existing opening mechanism which is manually debugged, compared with the prior art, the device has higher regulation and control precision, more accurate regulation and shorter regulation time, and reduced reject ratio, the production efficiency is improved.
Welding set 400 sets up the multiunit side by side to reduce process latency, through multiunit welding set 400 simultaneous working, productivity gain can be effectively, then the material loading manipulator between assembly device 300 and welding set 400 sets up guide rail screw drive mechanism, guide rail screw drive mechanism's working stroke is the same with welding set 400 station width side by side, makes things convenient for the manipulator to adjust the position when the material loading, with the latency of reducing welding, material loading, productivity gain.
The material conveying manipulator between the assembling device 300 and the welding device 400 comprises a grabbing positioning mechanism for secondarily positioning the to-be-welded table and chair frame behind the assembling device 300, the to-be-welded table and chair frame preassembled in the assembling device 300 can be secondarily calibrated through the grabbing positioning mechanism, the to-be-welded table and chair frame on the grabbing positioning mechanism can be directly placed on the welding fixture 420 for welding, and the work of adjusting on the welding fixture 420 again is omitted.
Meanwhile, the feeding manipulator between the welding device 400 and the material box is provided with the guide rail lead screw transmission mechanism, so that the position of the manipulator can be conveniently adjusted during feeding, the feeding requirements of the parallel welding devices 400 are matched, and the production efficiency is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a table chair frame automatic assembly welding system which characterized in that: the method comprises the following steps: a rod feeding detection device (100) for receiving and detecting rods from the magazine;
a connecting sheet feeding detection device (200) for receiving and detecting the connecting sheet from the bin;
the assembling device (300) is used for receiving the qualified material pieces detected by the rod feeding detection device (100) and the connecting piece feeding detection device (200) and completing the pre-assembly of the material pieces before welding;
and a welding device (400) for receiving the pre-assembled material piece and welding;
material conveying manipulators are arranged between the devices with the material parts coming and going;
the welding device (400) comprises a welding clamp (420), the welding clamp (420) comprises a clamp support (430) and a clamp panel (421) which are connected in a rotating mode, limiting mechanisms used for jacking and pressing two side parts of a table and chair frame to be welded are arranged on two sides of the clamp panel (421), a rotating motor (431) is fixedly connected onto the clamp support (430), and an output shaft of the rotating motor (431) is in transmission connection with the clamp panel (421) to drive the clamp panel (421) to rotate;
be provided with the automatic opening mechanism that struts that is used for propping up a chair frame both sides member on anchor clamps panel (421), automatic opening mechanism includes motor, cam (422) and slider (423), the motor links firmly anchor clamps panel (421), the output shaft transmission of motor connects cam (422), the cross-section of cam (422) is symmetrical structure, slider (423) set up two and symmetry and set up in cam (422) both sides, slider (423) sliding connection anchor clamps panel (421), the motor action drives cam (422) and struts the member through slider (423).
2. The automatic assembling and welding system for the table and chair frame as claimed in claim 1, wherein:
the welding device (400) further comprises a welding support frame (410) and welding guns, wherein two groups of welding fixtures (420) are arranged in parallel on the welding support frame (410), each welding fixture (420) is connected with the welding support frame (410) through a guide rail screw transmission mechanism, the welding guns are arranged at two ends of the welding support frame (410) located at the stroke of the welding fixtures (420), and each welding gun is connected with the welding support frame (410) through a guide rail screw transmission mechanism;
the clamp panel (421) is provided with two fixed supporting blocks (424) for supporting the shape of the desk and chair frame from the inside, and the two fixed supporting blocks (424) are respectively positioned at two connecting pieces of the desk and chair frame to be welded; and the outer sides of the two rod pieces are respectively provided with a limiting mechanism, and the limiting mechanisms adopt jacking cylinders (425).
3. The automatic assembling and welding system for the table and chair frame as claimed in claim 1, wherein:
the rod piece feeding detection device (100) comprises a supporting frame (110), a rod piece feeding mechanism (120) and a detection clearing mechanism (130), wherein one surface of the supporting frame (110) is provided with a cache plate group for temporarily storing rod pieces, the cache plate group comprises two cache plates (111), and the cache plates (111) are arranged in a mirror image manner;
the two buffer plates (111) are respectively provided with a temporary storage groove (112) for placing a rod piece, two temporary storage grooves (112) arranged in a mirror image mode between two adjacent buffer plates (111) form a group, and two ends of the rod piece are located in the two temporary storage grooves (112) arranged in the group;
the number of the groups of the temporary storage grooves (112) is more than 3.
4. The automatic assembling and welding system for the table and chair frame as claimed in claim 3, wherein:
a group of temporary storage grooves (112) at one end of the buffer board (111) are primary centering grooves, and a group of temporary storage grooves (112) at the other end of the buffer board are final centering grooves;
each preliminary centering groove is provided with a preliminary centering cylinder (113) fixedly connected with a supporting frame (110), a cylinder rod of the preliminary centering cylinder (113) is connected with a preliminary centering block, the preliminary centering block is provided with a preliminary centering surface parallel to the surface of the buffer board (111), the projection of the preliminary centering surface is positioned on the end surface of the rod piece and the outer surface of the buffer board (111), the preliminary centering cylinder (113) acts to drive the preliminary centering surface to push the rod piece to be preliminarily centered, and after preliminary centering, a gap exists between the preliminary centering surface and the end surface of the rod piece;
each final centering groove all sets final cylinder (114) placed in the middle that links firmly braced frame (110), the jar pole of final cylinder (114) placed in the middle is connected with final centering piece, final centering piece possesses the final centering face that is on a parallel with buffer board (111) face, the projection of final centering face is located the terminal surface of member and the surface of buffer board (111), and final cylinder (114) placed in the middle moves, drives final centering face and promotes the final centering of member, and final centering back, final centering face and member terminal surface laminating.
5. The automatic assembling and welding system for the table and chair frame as claimed in claim 3, wherein:
the rod feeding mechanism (120) comprises a propelling mechanism and a lifting mechanism, the propelling mechanism comprises a propelling cylinder (121) fixedly connected with the supporting frame (110) and a propelling plate (122) connected with the propelling cylinder (121), the propelling plate (122) is arranged on the supporting frame (110) in a sliding mode, and the sliding direction of the propelling plate (122) is the same as the arrangement direction of the rods;
the lifting mechanism is arranged on the pushing plate (122), the lifting mechanism comprises a lifting cylinder (123) and a lifting plate (124) connected with a cylinder rod of the lifting cylinder (123), and the moving direction of the lifting cylinder (123) faces to the rod piece;
the lifting plate (124) is provided with two mirror-image parallel positioning strips (125), each positioning strip (125) is provided with a positioning groove (126) for accommodating a rod piece, the two mirror-image positioning grooves (126) form a group, each group of positioning grooves (126) accommodates one rod piece, and the number of the groups of the positioning grooves (126) is less than 1.
6. The automatic assembly welding system for the table and chair frame as claimed in claim 4, wherein:
the detection clearing and retreating mechanism (130) comprises a position detector group and a clearing and retreating device, the position detector group comprises three photoelectric detectors (131) fixedly connected with a supporting frame and positioned in a primary centering groove, and the three photoelectric detectors (131) respectively pass through two hinge holes and a notch of a table and chair frame;
the clearing device comprises a clearing air cylinder (132) and a wedge-shaped rolling platform (133) connected with a cylinder rod of the clearing air cylinder (132), wherein the inclined surface of the wedge-shaped rolling platform (133) faces to a rod piece of a primary centering groove, and a plurality of rollers are arranged in the direction of the inclined surface of the wedge-shaped rolling platform (133).
7. The automatic assembling and welding system for the table and chair frame as claimed in claim 1, wherein:
the connecting piece feeding detection device (200) comprises a vibration disc (210) and a clamping and overturning mechanical arm (220), and a transmission mechanism is arranged between the vibration disc (210) and the clamping and overturning mechanical arm (220);
a discharge hole of the vibrating disc (210) is provided with a screening plate, and the screening plate allows a connecting plate with an inward notch to pass through;
the turnover manipulator comprises a turnover mechanism and a clamping mechanism, the turnover mechanism comprises a motor and a turnover shaft (221) in transmission connection with the motor, and the motor drives the turnover shaft (221) to turn over for 180 degrees each time;
the clamping mechanisms are arranged in two, and are arranged on the turnover mechanism in a centrosymmetric mode.
8. The automatic assembling and welding system for the table and chair frame as claimed in claim 1, wherein:
the assembling devices (300) are arranged in plurality and are connected with a turntable together;
the assembling device (300) comprises an assembling base plate (310) and clamping devices (320) arranged on the assembling base plate (310), each rod piece is at least provided with three groups of clamping devices (320), and the two clamping devices (320) are in one group and are respectively used for clamping two side surfaces of the rod piece;
two clamping devices (320) are arranged on one side of the table and chair frame in the length direction, and idler wheels which are convenient to disassemble and assemble are arranged on the other side of the table and chair frame.
9. The automatic assembling and welding system for the table and chair frame as claimed in claim 1, wherein:
a plurality of welding devices (400) are arranged in parallel, a material conveying manipulator between the assembling device (300) and the welding devices (400) is provided with a guide rail lead screw transmission mechanism, and the working stroke of the guide rail lead screw transmission mechanism is the same as the width of parallel stations of the welding devices (400);
the material conveying manipulator between the assembling device (300) and the welding device (400) comprises a grabbing and positioning mechanism for secondarily positioning the to-be-welded table and chair frame after the assembling device (300).
10. The automatic assembly welding system for the table and chair frame as claimed in claim 9, wherein:
and the material conveying manipulator between the welding device (400) and the blanking box is provided with a guide rail lead screw transmission mechanism, and the working stroke of the guide rail lead screw transmission mechanism is the same as the width of parallel stations of the welding device (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111307640.3A CN113878284A (en) | 2021-11-05 | 2021-11-05 | Table chair frame automatic assembly welding system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111307640.3A CN113878284A (en) | 2021-11-05 | 2021-11-05 | Table chair frame automatic assembly welding system |
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| CN113878284A true CN113878284A (en) | 2022-01-04 |
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| CN202111307640.3A Pending CN113878284A (en) | 2021-11-05 | 2021-11-05 | Table chair frame automatic assembly welding system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117161637A (en) * | 2023-11-03 | 2023-12-05 | 哈尔滨学院 | Multimedia equipment support manufacturing and forming device |
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