CN111805041B

CN111805041B - Chip ring iron welding method and device

Info

Publication number: CN111805041B
Application number: CN202010668031.XA
Authority: CN
Inventors: 楼显华; 李小霞; 李真真
Original assignee: Weijian Intelligent Packaging Technology Shenzhen Co ltd
Current assignee: Weijian Intelligent Packaging Technology (Shenzhen) Co.,Ltd.
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-12-14
Anticipated expiration: 2040-07-13
Also published as: CN111805041A

Abstract

The invention relates to the technical field of chip welding. A chip ring iron welding device is characterized in that a rotating jig device is used for carrying a bottom core to move circularly, a bottom core heating device is used for heating the bottom core, and a bottom core feeding device is used for conveying the bottom core to the rotating jig device; the pressing assembly is used for pressing the bottom core in the jig, the ring iron feeding device is used for feeding the ring iron, the appearance detection device is used for detecting the ring iron, the defective product carrying device is used for discharging unqualified products, the welding device is used for welding the bottom core and the ring iron, and the discharging device is used for discharging. The invention has the advantages that the bottom core conveying is accurate and efficient, and the bottom core processing is convenient; the ring iron is clamped accurately and fed accurately; the tin dipping quality is high, and the welding is firm; the carrier has the advantage of high collection efficiency.

Description

Chip ring iron welding method and device

Technical Field

The invention relates to the technical field of chip welding, in particular to chip ring iron welding equipment and a chip ring iron welding method.

Background

The electronic chip is a whole chip formed by putting integrated circuits formed by a large number of microelectronic components on a plastic substrate. The chip comprises end core and ring iron, and the ring iron is connected through the welded mode with the circular metal loop at end core top, and the lower extreme of end core is provided with a plurality of pins.

The patent application with the publication number of CN102419822B and the name of a tooling clamp management method of a chip welding machine and the chip welding machine discloses a tooling clamp management method of a chip welding machine and the chip welding machine. An RFID tag is attached to a jig of a preform head, a bonding head, and an ejection unit, and information on the jig such as the size of a die to be processed is stored. At the time of mounting the tooling fixture, the operator inputs manufacturing conditions for the tooling fixture. On the other hand, when the information on the tool read from the RFID tag by the RFID reader does not match the manufacturing condition on the tool, information on a tool mounting error is displayed on the monitor. When production is finished, the RFID reader/writer writes the work history of the tool holder into the RFID tag, reads the work history at the start of the next production, and displays information on the monitor when the number of times exceeds a predetermined number.

The prior art has the following defects: 1. the chip bottom core is easy to dislocate in position during processing and difficult to position and clamp; 2. the ring iron structure is difficult to clamp; 3. the tin dipping quality is not high, the welding is not firm, and the welding efficiency is low; 4. chip collection is difficult.

Disclosure of Invention

The invention aims to solve the problems that the chip bottom core in the prior art is easy to dislocate in position during processing and difficult to position and clamp; the ring iron structure is difficult to clamp; the tin dipping quality is not high, the welding is not firm, and the welding efficiency is low; the defect of difficult chip collection provides a bottom core which is accurate and efficient in conveying and convenient to process; the ring iron is clamped accurately and fed accurately; the tin dipping quality is high, and the welding is firm; a carrier collection efficient chip ring iron welding device and a working method thereof.

For the purpose of the invention, the following technical scheme is adopted for realizing the purpose: a chip ring iron welding device comprises a rack, and a rotating jig device, a bottom core heating device, a bottom core feeding device, a pressing assembly, a ring iron feeding device, an appearance detection device, a defective product carrying device, a welding device and a discharging device which are arranged on the rack; the rotary jig device is arranged at the central part of the rack in a disc shape, and the bottom core feeding device is connected with the bottom core heating device and the rotary jig device; the bottom core heating device, the pressing assembly, the ring iron feeding device, the defective product carrying device, the appearance detection device, the welding device and the discharging device are sequentially connected along the circumference of the rotating jig device;

the rotary jig device is used for carrying the bottom core to move circularly, the bottom core heating device is used for heating the bottom core, and the bottom core feeding device is used for conveying the bottom core to the rotary jig device; the pressing assembly is used for pressing the bottom core in the jig, the ring iron feeding device is used for feeding the ring iron, the appearance detection device is used for detecting the ring iron, the defective product carrying device is used for discharging unqualified products, the welding device is used for welding the bottom core and the ring iron, and the discharging device is used for discharging.

Preferably, the rotating jig device comprises a turntable, a jig assembly, a divider and a jig driving assembly; the automatic feeding device comprises a rack, a turntable, a plurality of jig assemblies, a bottom core feeding station, a pressing station, a ring iron feeding station, a detection station, a separation station, a welding station and a blanking station, wherein the turntable is mounted on an output shaft of the divider; the jig driving assemblies are arranged on the rack and are provided with three groups, and the three groups of jig driving assemblies respectively correspond to the bottom core feeding station, the separating station and the discharging station; the jig driving assembly comprises a support, a driving cylinder, a connecting block and a ball; drive actuating cylinder horizontal installation on the support, the flexible end at driving actuating cylinder is installed to the connecting block, and the ball articulates in the upper end of connecting block.

Preferably, the jig assembly comprises a base, a material placing block, a fixed jig block, a sliding plate, a driving wedge block, a movable jig block, a first connecting plate, a spring and a second connecting plate; the base is fixed on the turntable, the material placing block is installed on the base, the fixed jig block is installed on the side of the material placing block, a notch is formed in the lower end of the material placing block, a sliding rail is arranged on the base, and the sliding plate is movably connected to the base through the sliding rail; the driving wedge block is arranged on the sliding plate, and the movable jig block is arranged at the upper end of the sliding plate; the end part of the driving wedge block is provided with an inclined plane, and the inclined plane corresponds to the ball of the jig driving assembly; the opposite sides of the movable jig block and the fixed jig block are provided with notches, and the shapes of the notches are matched with the shapes of the side edges of the bottom core; a vertical inward concave blind groove is formed in the side edge of the notch groove, the upper end of the blind groove is closed, and a terminal of the bottom core is clamped in the blind groove to realize longitudinal fixation of the bottom core; the movable jig block corresponds to the fixed jig block, and the movable jig block and the fixed jig block are respectively positioned above two sides of the material placing block; the first connecting plate is arranged on the side of the base, the second connecting plate is arranged on the side of the sliding plate, the spring is pulled, and two ends of the spring are respectively connected with the first connecting plate and the second connecting plate.

Preferably, the bottom core heating device comprises a conveying belt assembly and a heating box assembly; the heating box assembly is arranged in the middle of the conveying belt assembly; the bottom core feeding device comprises a connecting seat, a first moving module, a second moving module, a third moving module and a suction block; the first movable module, the second movable module and the third movable module are arranged in a mutually perpendicular mode, the first movable module is installed on the connecting seat, the second movable module is installed in a moving portion of the first movable module, the third movable module is installed in a moving portion of the second movable module, the suction block is installed at a moving end of the third movable module, and the suction block corresponds to a discharge end of the heating box assembly.

Preferably, the ring iron feeding device comprises a vibration feeder, a support plate, a transverse moving cylinder, a transverse moving plate, a stepping motor, a synchronous belt assembly, a longitudinal moving plate, a folded plate, a finger cylinder and a pressing head assembly; the support plate is fixed on the rack, the transverse moving plate moves on the support plate through the sliding rail, the transverse moving cylinder is installed on the support plate, and the telescopic end of the transverse moving cylinder is connected with the transverse moving plate; the stepping motor is arranged on the transverse moving plate, the synchronous belt assembly is connected to the transverse moving plate, and the stepping motor is connected with a belt wheel of the synchronous belt assembly; the longitudinal moving plate is movably connected to the transverse moving plate through a vertical sliding rail and is fixed with a synchronous belt of the synchronous belt assembly through a buckle; the folding plate is fixed on the longitudinal moving plate, the finger cylinder is arranged on the folding plate, and two moving ends of the finger cylinder are provided with clamping jaws; one end of the folded plate is provided with a slide rail, a slide plate is arranged on the slide rail, the pressing head assembly is arranged on the slide plate, and the pressing head assembly is positioned between the two clamping jaws; a tensioning spring is arranged between the sliding plate and the folded plate, a vertical plate is arranged at the back of the sliding plate and is positioned above the folded plate, and the tensioning spring presses the vertical plate on the folded plate; the vibration feeder comprises circular vibration and direct vibration, a material rail is arranged on the direct vibration, the discharge end of the material rail protrudes outwards, and a convex part is arranged on the material rail at the end part; the discharge end of the vibration feeder is positioned below the finger cylinder; the longitudinal moving plate is provided with a sensing piece, the transverse moving plate is provided with a corresponding infrared sensor, and the sensing piece corresponds to the light path of the infrared sensor.

Preferably, the pressing head assembly comprises a guide seat, a lifting shaft, a pressing head and a lower pressing spring; the lifting shaft is arranged in the guide seat through a bearing, a stop block is fixedly arranged at the upper end of the lifting shaft, the pressing head is fixed at the lower end of the lifting shaft, the lower pressing spring is sleeved outside the lifting shaft, the lower end of the lower pressing spring abuts against the pressing head, and the upper end of the lower pressing spring abuts against the guide seat; the lower end of the pressing head is a cylinder, and the diameter of the cylinder is larger than the inner diameter of the ring iron.

Preferably, the welding device comprises a base, a horizontal cylinder, a horizontal moving plate, a driving motor, a first belt assembly, a lifting plate, a spot welding needle, a tin pool assembly and a tin scraping assembly; the horizontal cylinder is arranged on the base, the horizontal moving plate is movably connected to the base through a sliding rail, and the telescopic end of the horizontal cylinder is connected with the horizontal moving plate; the driving motor is arranged on the horizontal moving plate, the first belt assembly is vertically connected to the horizontal moving plate, and the driving motor drives the first belt assembly to work; the horizontal moving plate is provided with a vertical sliding rail, an intermediate plate is mounted on the sliding rail, a clamping plate is arranged on the side of the intermediate plate and fixed with a belt of the first belt assembly, an induction sheet is arranged at the upper end of the intermediate plate, a corresponding infrared sensor is arranged on the horizontal moving plate, and the induction sheet corresponds to the infrared sensor and controls the moving height of the intermediate plate; the lifting plate is fixed on the middle plate; the spot welding pins are arranged on the lifting plate, and the number of the spot welding pins is four; the tin cell subassembly set up on the base, the tin scraping subassembly is located the top of tin cell subassembly.

Preferably, the tin pool assembly comprises a tin pool, a second belt assembly and a speed reducing motor, the tin pool is annular, a rotating shaft is arranged at the lower end of the tin pool, the tin pool is hinged on the base, the speed reducing motor is arranged on the base, and the output end of the speed reducing motor is connected with the rotating shaft at the lower end of the tin pool through the second belt assembly; a heating assembly is arranged in the tin pool; the tin scraping assembly comprises an adjusting plate, an adjusting bolt, an installation clamping block, a compression spring and a scraping plate; the adjusting plate is movably connected to the base through a sliding rail, the scraper is arranged on the adjusting plate, and the scraper is positioned in an annular groove of the tin pool; the scraping plate is along the radial direction of the tin pool; be provided with the blend stop of L shape on the base, compression spring upper end offset with the blend stop of L shape, the compression spring lower extreme offsets with the regulating plate, compression spring compresses tightly the regulating plate downwards, the installation clamp splice fix on the base, adjusting bolt installs on the installation clamp splice, adjusting bolt upper end offset with the regulating plate.

Preferably, the blanking device comprises a movable sliding table, a first supporting plate, a second supporting plate, a bottom positioning assembly, a side end positioning assembly, a pull pressing plate, a lateral moving cylinder, a material returning plate and a blanking conveying mechanism; the movable sliding table is fixedly arranged, the first supporting plate is arranged at the movable part of the movable sliding table, the second supporting plate is fixed on the rack, and the first supporting plate and the second supporting plate are positioned at the same height; the bottom positioning assembly and the side end positioning assembly are arranged below the first supporting plate, a feeding track is arranged on the first supporting plate, a strip-shaped carrier for storing chips is arranged in the feeding track, the side end positioning assembly is used for positioning the side of the strip-shaped carrier, two convex columns are arranged at the upper end of the bottom positioning assembly, the convex columns can lift, and the convex columns are inserted into the bottom of the strip-shaped carrier to realize the positioning of the jig; the tension and compression plate is arranged at the telescopic end of the lateral movement cylinder, the lateral movement cylinder is arranged on the second supporting plate, a row of air suction holes are formed in the tension and compression plate, and the tension and compression plate corresponds to the lateral side of the feeding track of the first supporting plate; the material returning plate is movably connected to the second supporting plate through a sliding rail, a material returning cylinder is further arranged on the side of the second supporting plate, the telescopic end of the material returning cylinder is connected with the material returning plate, a material returning track is arranged on the second supporting plate, and the material returning plate corresponds to the material returning track.

A chip ring iron welding method comprises the following steps of:

feeding a bottom core: after the conveying belt assembly carries the bottom core to pass through the heating box assembly and is preheated, the bottom core is sucked by the bottom core feeding device and placed into the rotating jig device to realize feeding of the bottom core, and the rotating jig device carries the bottom core to rotate and move intermittently;

(II) feeding ring iron: vibrating the ring iron out in order by the vibrating feeder, then moving the finger cylinder to the upper end of the vibrating feeder under the driving of the transverse moving cylinder and the stepping motor, then driving the longitudinal moving plate to descend by the synchronous belt assembly, firstly, descending the pressing head assembly to press the ring iron on the material rail, and then driving the clamping jaws to be close by the finger cylinder to clamp two ends of the ring iron; after clamping, carrying the ring iron to the bottom core, loosening the clamping jaw, and pressing the ring iron on the bottom core by the pressure head assembly under the action of the spring force to realize feeding;

(III) detection and rejection: the appearance detection device performs appearance detection on the ring iron, and products with unqualified appearance are sucked and conveyed out of the rotating jig device through the defective product conveying device to realize removal;

(IV) welding: liquid tin liquid is contained in the tin pool, the speed reduction motor drives the tin pool to rotate slowly, the adjusting bolt is rotated to adjust the height of the scraping plate, the lower end of the scraping plate is located below the liquid level of the tin liquid, and the scraping plate scrapes an oxide layer on the liquid level in the rotating process of the tin pool; then under the action of the horizontal cylinder and the driving motor, the spot welding needle is driven to firstly extend into a tin pool for tin dipping, and then the spot welding needle moves to a welding station for welding;

(V) blanking: empty bar carrier gets into at the feeding track, one side compresses tightly through drawing the clamp plate, the opposite side is through side locating component jack-up realization location, both sides are realized fixing a position the back completely, bottom locating component jack-up realizes fixing a position the bar carrier, then unloading transport mechanism begins work, carry the bar carrier with the chip, fill with after, draw the clamp plate and begin to breathe in, hold the carrier, then the side moves the cylinder and drives bar carrier lateral shifting, last material returned cylinder drives material returned board motion, the bar carrier that will fill with realizes the unloading.

The chip ring iron welding equipment and the working method thereof adopting the technical scheme have the advantages that: the rotary jig device positions and clamps the bottom core by arranging a specific jig assembly, so that the accurate position of the bottom core is kept, and the machining precision is improved; the jig components need to be opened and closed at different stations, and the jig components at the appointed stations are controlled by arranging corresponding jig driving components on the stations, so that the rotating conveying efficiency of the rotating disc type is improved; the jig assembly is kept in a normally closed state through the spring, and the elastic force clamps the jig assembly, so that impact is avoided, and the quality of the bottom core is protected; set up drive voussoir and ball and transmit, realize the motion that activity tool piece is close to fixed tool piece to activity tool piece sets up corresponding flute with fixed tool piece opposite side, can fix a position the end core in the horizontal plane, can prevent again that end core from being pulled out in vertical direction. The ring iron feeding device clamps by clamping from two sides by pressing, the success rate of clamping is improved, the pressing head assembly is adopted for pressing down and elastic clamping, so that impact caused by rigid impact is prevented from colliding with the vibration feeder, and the ring iron is vibrated out of the material rail; the sheet-shaped ring iron is pressed, positioning in the vertical direction is achieved, clamping is conducted from two sides, the sheet-shaped ring iron clamping success rate is improved, and falling is avoided; the horizontal movement of the ring iron feeding device is driven by an air cylinder, the vertical movement is driven by a motor, the precision of the motor and the efficiency of the air cylinder are combined, and the accuracy and the efficiency of the ring iron feeding are improved; according to the press head assembly, the press head assembly can perform pressing action when the ring iron is fed to the bottom core, and the ring iron can be fed and positioned more accurately. The welding device is provided with an annular tin pool for containing tin liquid, and is provided with a speed reduction motor for driving the tin pool to rotate, and the scraper plate is kept still for scraping the surface layer of the tin liquid, so that the tin dipping quality is ensured, and the welding firmness is improved; the height of the scraper can be adjusted through the adjusting bolt so as to adapt to the liquid levels of the tin liquid with different heights; a plurality of welding pins are arranged, spot welding is carried out at the same time, welding can be completed by one-time welding, and the welding efficiency is improved; the welding device is driven by a horizontal cylinder in a horizontal moving mode, and the vertical moving mode is driven by a driving motor and a belt assembly, so that horizontal rapid moving and vertical accurate moving are achieved. The blanking device is used for collecting by arranging a specific carrier, the carrier adopts a rigid track to realize automatic circulation, and the efficiency is higher; the carrier realizes the location through a plurality of position, improves the precision of placing of chip, improves the precision of unloading.

Drawings

Fig. 1 is a schematic flow chart of a chip ring iron welding method according to an embodiment of the present invention.

Fig. 2 is an exploded view of the rotary jig device.

Fig. 3 is an exploded view of the jig assembly.

Fig. 4 is a structural view of a bottom core heating device and a bottom core feeding device.

Fig. 5 is an exploded view of the ring iron feeding device.

Fig. 6 is an exploded view of the pressing head assembly.

Fig. 7 is a structural view of the stock rail.

Fig. 8 is an exploded view of the welding apparatus.

Fig. 9 is an exploded view of the blanking device.

FIG. 10 is a block diagram of a chip according to the present invention.

Detailed Description

As shown in fig. 2-10, a chip ring iron welding device comprises a frame, and a rotating jig device 1, a bottom core heating device 2, a bottom core feeding device 3, a pressing assembly 4, a ring iron feeding device 5, an appearance detection device 6, a defective product carrying device 7, a welding device 8 and a discharging device 9 which are arranged on the frame; the rotary jig device 1 is arranged at the central part of the frame in a disc shape, and the bottom core feeding device 3 is connected with the bottom core heating device 2 and the rotary jig device 1; the bottom core heating device 2, the pressing component 4, the ring iron feeding device 5, the defective product carrying device 6, the appearance detection device 7, the welding device 8 and the discharging device 9 are sequentially connected along one circle of the rotating jig device 1.

The rotary jig device 1 is used for carrying the bottom core to move circularly, the bottom core heating device 2 is used for heating the bottom core, and the bottom core feeding device 3 is used for conveying the bottom core to the rotary jig device 1; the pressing assembly 4 is used for pressing a bottom core in a jig, the ring iron feeding device 5 is used for feeding ring iron, the appearance detection device 6 is used for detecting the ring iron, the defective product carrying device 7 is used for discharging unqualified products, the welding device 8 is used for welding the bottom core and the ring iron, and the discharging device 9 is used for discharging.

As shown in fig. 10, the chip processed in this patent is composed of a bottom core 100 and a ring iron 200, the ring iron 200 is connected with a circular metal ring on the top of the bottom core 100 by welding, and the bottom end of the bottom core 100 is provided with a plurality of pins.

As shown in fig. 2, the rotating jig device 1 includes a turntable 11, a jig assembly 12, a divider and a jig driving assembly 13; the automatic feeding device is characterized in that the divider is fixed on a frame, the rotary table 11 is mounted on an output shaft of the divider, the jig assemblies 12 are provided with a plurality of groups, the jig assemblies 12 are uniformly mounted on the periphery of the rotary table 11, and a bottom core feeding station 101, a pressing station 102, a ring iron feeding station 103, a detection station 104, a separation station 105, a welding station 106 and a blanking station 107 are arranged on the periphery of the rotary table 11; the jig driving assemblies 13 are arranged on the frame, three groups of jig driving assemblies 13 are arranged, and the three groups of jig driving assemblies 13 respectively correspond to the bottom core feeding station 101, the separating station 105 and the discharging station 107.

The jig driving assembly 13 comprises a support 131, a driving cylinder 132, a connecting block 133 and a ball 134; the driving cylinder 132 is horizontally installed on the bracket 131, the connecting block 133 is installed at the telescopic end of the driving cylinder 132, and the ball 134 is hinged at the upper end of the connecting block 133.

As shown in fig. 3, the jig assembly 12 includes a base 121, a material placing block 122, a fixed jig block 123, a sliding plate 124, a driving wedge 125, a movable jig block 126, a first connecting plate 127, a spring 128 and a second connecting plate 129; the base 121 is fixed on the turntable 11, the material placing block 122 is installed on the base 121, the fixing jig block 123 is installed on the side of the material placing block 122, a notch is formed in the lower end of the material placing block 122, a sliding rail is arranged on the base 121, and the sliding plate 124 is movably connected to the base 121 through the sliding rail; the driving wedge 125 is arranged on the sliding plate 124, and the movable jig block 126 is arranged at the upper end of the sliding plate 124; the end of the driving wedge 125 is provided with an inclined plane corresponding to the ball 134 of the jig driving assembly 13; the opposite sides of the movable jig block 126 and the fixed jig block 123 are provided with notches 1261, and the shape of the notches 1261 is matched with the shape of the side edge of the bottom core; a vertical inward concave blind groove is formed in the side edge of the groove 1261, the upper end of the blind groove is closed, and a terminal of the bottom core is clamped in the blind groove to realize longitudinal fixation of the bottom core; the movable jig block 126 corresponds to the fixed jig block 123, and the movable jig block 126 and the fixed jig block 123 are respectively positioned above two sides of the material placing block 122; the first connecting plate 127 is installed at the side of the base 121, the second connecting plate 129 is installed at the side of the sliding plate 124, the spring 128 is pulled, and both ends of the spring 128 are respectively connected with the first connecting plate 127 and the second connecting plate 129.

Rotating tool device 1 at the during operation, the decollator drives tool subassembly 12 intermittent motion in proper order, core material loading station 101 department at the end, drive actuating cylinder 132 shrink and drive ball 134 and move to the inboard, ball 134 is close to the inclined plane of drive voussoir 125, promote drive voussoir 125 and move along the slide rail, make activity tool piece 126 move to the outside, place end core back on putting material piece 122, ball 134 resets, spring 128 is through the resilience force with slide plate 124 back-draw, be close to fixed tool piece 123 with activity tool piece 126, realize compressing tightly of end core.

The rotating jig device 1 solves the problems that the chip bottom core is easy to dislocate and difficult to position and clamp during processing, and the specific jig assembly 12 is arranged to position and clamp the bottom core, so that the accurate position of the bottom core is kept, and the processing precision is improved; the jig assemblies 12 need to be opened and closed at different stations, and the jig assemblies 12 at the appointed stations are controlled by arranging corresponding jig driving assemblies 13 on the stations, so that the rotating disc type rotating conveying efficiency is improved; the jig assembly 12 is kept in a normally closed state through the spring 128, and the elastic force clamps the jig assembly to avoid impact and protect the quality of the bottom core; set up drive voussoir 125 and ball 134 and transmit, realize that activity tool piece 126 is close to the motion of fixed tool piece 123 to activity tool piece 126 sets up corresponding flute with fixed tool piece 123 opposite side, can fix a position the end core in the horizontal plane, can prevent again that end core from being pulled out in vertical direction.

As shown in fig. 4, the bottom core heating device 2 comprises a conveyor belt assembly 21 and a heating box assembly 22; the heating box assembly 22 is arranged in the middle of the conveying belt assembly 21, and the heating box assembly 22 is used for heating the passing bottom cores; the bottom core feeding device 3 comprises a connecting seat 31, a first moving module 32, a second moving module 33, a third moving module 34 and a suction block 35; first removal module 32, second remove module 33 and third and remove the module 34 between mutually perpendicular and arrange, first removal module 32 is installed on connecting seat 31, the second removes the module 33 and installs the motion portion at first removal module 32, the third removes the module 34 and installs the motion portion at second removal module 33, absorb the piece 35 and install the motion end at third removal module 34, absorb the piece 35 and correspond the discharge end of heating cabinet subassembly 22.

As shown in fig. 5-7, the ring iron feeding device 5 comprises a vibrating feeder, a support plate 51, a traverse cylinder 52, a traverse plate 53, a stepping motor 54, a synchronous belt assembly 55, a longitudinal moving plate 56, a folded plate 57, a finger cylinder 58 and a pressing head assembly 59; the support plate 51 is fixed on the frame, the traverse plate 53 moves on the support plate 51 through a slide rail, the traverse cylinder 52 is arranged on the support plate 51, and the telescopic end of the traverse cylinder 52 is connected with the traverse plate 53; the stepping motor 54 is arranged on the transverse moving plate 53, the synchronous belt assembly 55 is connected on the transverse moving plate 53, and the stepping motor 54 is connected with a belt wheel of the synchronous belt assembly 55; the longitudinal moving plate 56 is movably connected to the transverse moving plate 53 through a vertical sliding rail, the longitudinal moving plate 56 is fixed with a synchronous belt of the synchronous belt assembly 55 through a buckle, and the synchronous belt assembly 55 drives the longitudinal moving plate 56 to vertically move; the folded plate 57 is fixed on the longitudinal moving plate 56, the finger cylinder 58 is installed on the folded plate 57, and the two moving ends of the finger cylinder 58 are provided with clamping jaws 581; one end of the folded plate 57 is provided with a slide rail, a slide plate 571 is installed on the slide rail, the pressing head assembly 59 is installed on the slide plate 571, and the pressing head assembly 59 is located between the two clamping jaws 581; a tension spring 572 is arranged between the sliding plate 571 and the folding plate 57, a vertical plate 573 is arranged on the back of the sliding plate 571, the vertical plate 573 is positioned above the folding plate 57, and the tension spring 572 presses the vertical plate 573 on the folding plate 57; the vibrating feeder comprises circular vibration and straight vibration, a material rail 501 is arranged on the straight vibration, the discharge end of the material rail 501 protrudes outwards to be convenient for clamping from the side, a convex part 502 is arranged on the material rail 501 at the end part, and the convex part 502 is used for blocking ring iron; the discharge end of the vibration feeder is positioned below the finger cylinder 58; the longitudinal moving plate 56 is provided with a sensing piece, the transverse moving plate 53 is provided with a corresponding infrared sensor, and the sensing piece corresponds to the light path of the infrared sensor; the pressing head assembly 59 comprises a guide seat 591, a lifting shaft 592, a pressing head 593 and a pressing spring 594; the lifting shaft 592 is mounted inside the guide holder 591 through a bearing, a stopper 595 is fixedly arranged at the upper end of the lifting shaft 592, a pressing head 593 is fixed at the lower end of the lifting shaft 592, the downward pressing spring 594 is sleeved outside the lifting shaft 592, the lower end of the downward pressing spring 594 abuts against the pressing head 593, and the upper end of the downward pressing spring 594 abuts against the guide holder 591; the lower end of the pressing head 593 is a cylinder, and the diameter of the cylinder is larger than the inner diameter of the ring iron.

When the ring iron feeding device 5 works, the vibrating feeder vibrates ring irons out in order, then under the driving of the transverse moving cylinder 52 and the stepping motor 54, the finger cylinder 58 is moved to the upper end of the vibrating feeder, then the synchronous belt assembly 55 drives the longitudinal moving plate 56 to descend, firstly, the pressing head assembly 59 descends to press the ring irons on the material rail 501, and then the finger cylinder 58 drives the clamping jaws 581 to approach to clamp two ends of the ring irons; after clamping, the clamping jaws 581 are released, and the ram assembly 59 presses the ring iron against the bottom core under the action of the spring force, so that loading is achieved.

The ring iron feeding device 5 solves the problem that the ring iron structure is difficult to clamp, clamping is carried out in a mode of clamping from two sides by pressing firstly, the success rate of clamping is improved, the pressing head assembly 59 is adopted to press downwards and clamp elastically, so that impact caused by rigid impact is prevented from colliding with a vibration feeder, and the ring iron is vibrated out of a material rail; the sheet-shaped ring iron is pressed, positioning in the vertical direction is achieved, clamping is conducted from two sides, the sheet-shaped ring iron clamping success rate is improved, and falling is avoided; the horizontal movement of the ring iron feeding device 5 is driven by an air cylinder, the vertical movement is driven by a motor, the precision of the motor and the efficiency of the air cylinder are combined, and the accuracy and the efficiency of the ring iron feeding are improved; the pressing head assembly 59 has a pressing action when feeding to the bottom core, so that the ring iron can be fed and placed more accurately.

As shown in fig. 8, the welding device 8 includes a base 81, a horizontal cylinder 82, a horizontal moving plate 83, a driving motor 84, a first belt assembly 85, a lifting plate 86, a spot welding needle 87, a tin battery assembly 88 and a tin scraping assembly 89; the horizontal cylinder 82 is arranged on the base 81, the horizontal moving plate 83 is movably connected to the base 81 through a sliding rail, and the telescopic end of the horizontal cylinder 82 is connected with the horizontal moving plate 83; the driving motor 84 is installed on the horizontal moving plate 83, the first belt assembly 85 is vertically connected to the horizontal moving plate 83, and the driving motor 84 drives the first belt assembly 85 to work; a vertical slide rail is arranged on the horizontal moving plate 83, an intermediate plate 851 is installed on the slide rail, a clamping plate is arranged on the side of the intermediate plate 851 and fixed with a belt of the first belt assembly 85, an induction sheet is arranged at the upper end of the intermediate plate 851, a corresponding infrared sensor is arranged on the horizontal moving plate 83, and the induction sheet corresponds to the infrared sensor and controls the moving height of the intermediate plate 851; the lifting plate 86 is fixed on the middle plate 851; the spot welding needles 87 are arranged on the lifting plate 86, and the number of the spot welding needles 87 is four; the tin pool assembly 88 is arranged on the base 81, and the tin scraping assembly 89 is positioned above the tin pool assembly 88; the tin pool assembly 88 comprises a tin pool 881, a second belt assembly 882 and a speed reduction motor 883, wherein the tin pool 881 is formed into a ring shape, the lower end of the tin pool 881 is provided with a rotating shaft, the tin pool 881 is hinged on the base 81, the speed reduction motor 883 is installed on the base 81, and the output end of the speed reduction motor 883 is connected with the rotating shaft at the lower end of the tin pool 881 through the second belt assembly 882; a heating component is arranged in the tin pool 881; the tin scraping assembly 89 comprises an adjusting plate 891, an adjusting bolt 892, an installation clamping block 893, a pressing spring 894 and a scraping plate 895; the adjusting plate 891 is movably connected to the base 81 through a slide rail, and the scraper 895 is installed on the adjusting plate 891, and the scraper 895 is located in an annular groove of the tin bath 881. The squeegee 895 is along the radius of the tin pool 881; an L-shaped barrier 896 is arranged on the base 81, the upper end of a compression spring 894 abuts against the L-shaped barrier 896, the lower end of the compression spring 894 abuts against an adjusting plate 891, the compression spring 894 presses the adjusting plate 891 downwards, the mounting clamping block 893 is fixed on the base 81, an adjusting bolt 892 is mounted on the mounting clamping block 893, the upper end of the adjusting bolt 892 abuts against the adjusting plate 891, and the adjusting bolt 892 can rotate to lift the adjusting plate 891 so as to adjust the height of the scraper 895.

When the welding device 8 works, liquid tin liquid is contained in the tin pool 881, the speed reduction motor 883 drives the tin pool 881 to rotate slowly, the adjusting bolt 892 is rotated to adjust the height of the scraper 895, the lower end of the scraper 895 is positioned below the liquid level of the tin liquid, and the scraper 895 scrapes off an oxide layer on the liquid level during the rotation of the tin pool 881; and then under the action of the horizontal cylinder 82 and the driving motor 84, the spot welding needle 87 is driven to firstly extend into the tin pool 881 for tin dipping, and then the spot welding needle 87 is moved to a welding station for welding.

The welding device 8 solves the problems of low tin dipping quality, infirm welding and low welding efficiency, tin liquid is contained in the annular tin pool 881, the speed reduction motor 883 is driven to drive the tin pool 881 to rotate, the scraper 895 is kept still, and the surface layer of the tin liquid is scraped, so that the tin dipping quality is ensured, and the welding firmness is improved; the height of the scraper 895 can be adjusted by adjusting the bolt 892 to adapt to the liquid level of molten tin with different heights; a plurality of spot welding needles 87 are arranged, spot welding is carried out at the same time, welding can be completed by one-time welding, and the welding efficiency is improved; the welding device 8 is driven by a horizontal cylinder 82 in horizontal movement and driven by a driving motor 84 and a belt assembly in vertical movement, so that horizontal quick movement and vertical accurate movement are realized.

As shown in fig. 9, the blanking device 9 includes a movable sliding table 91, a first supporting plate 92, a second supporting plate 93, a bottom positioning assembly 94, a side end positioning assembly 95, a pulling and pressing plate 96, a lateral moving cylinder 97, a stripper plate 98 and a blanking conveying mechanism 99; the movable sliding table 91 is fixedly arranged, the first supporting plate 92 is installed on a movable part of the movable sliding table 91, the second supporting plate 93 is fixed on the rack, and the first supporting plate 92 and the second supporting plate 93 are located at the same height; the bottom positioning assembly 94 and the side positioning assembly 95 are installed below the first supporting plate 92, a feeding track is arranged on the first supporting plate 92, a strip-shaped carrier 901 for storing chips is arranged in the feeding track, the side positioning assembly 95 is used for positioning the side of the strip-shaped carrier 901, two convex columns are arranged at the upper end of the bottom positioning assembly 94, the convex columns can lift and can be inserted into the bottom of the strip-shaped carrier 901 to position the jig; the pulling and pressing plate 96 is arranged at the telescopic end of the lateral moving cylinder 97, the lateral moving cylinder 97 is arranged on the second supporting plate 93, a row of air suction holes 961 are formed in the pulling and pressing plate 96, and the pulling and pressing plate 96 corresponds to the lateral side of the feeding track of the first supporting plate 92; the material returning plate 98 is movably connected to the second supporting plate 93 through a sliding rail, a material returning cylinder 931 is further arranged on the side of the second supporting plate 93, a telescopic end of the material returning cylinder 931 is connected with the material returning plate 98, a material returning rail 932 is arranged on the second supporting plate 93, and the material returning plate 98 corresponds to the material returning rail 932.

When the blanking device 9 works, an empty bar-shaped carrier 901 enters a feeding track, one side of the empty bar-shaped carrier is compressed by a pressing plate 96, the other side of the empty bar-shaped carrier is jacked by a side end positioning component 95 to realize positioning, after the two sides are completely positioned, a bottom positioning component 94 jacks up to position the bar-shaped carrier 901, a blanking carrying mechanism 99 starts working to carry chips into the bar-shaped carrier 901, after the blanking device is filled with chips, the pressing plate 96 starts to suck air to suck the carriers, a rear side shifting cylinder 97 drives the bar-shaped carrier 901 to move laterally, and a material returning cylinder 931 drives a material returning plate 98 to move, so that the filled bar-shaped carrier 901 realizes blanking.

The blanking device 9 solves the problem of difficult chip collection, and the specific carriers are arranged for collection, so that the carriers realize automatic circulation by adopting rigid tracks, and the efficiency is higher; the carrier realizes the location through a plurality of position, improves the precision of placing of chip, improves the precision of unloading.

As shown in fig. 1, a chip ring iron welding method uses the chip ring iron welding device to process through the following steps:

feeding a bottom core: after the conveying belt assembly 21 carries the bottom core to pass through the heating box assembly 22 for preheating, the bottom core is sucked by the bottom core feeding device 3 and is placed into the rotary jig device 1 to realize feeding of the bottom core, and the rotary jig device 1 carries the bottom core to rotate intermittently;

(II) feeding ring iron: vibrating out the ring iron in order by the vibrating feeder, then moving a finger cylinder 58 to the upper end of the vibrating feeder under the driving of a transverse moving cylinder 52 and a stepping motor 54, then driving a longitudinal moving plate 56 to descend by a synchronous belt assembly 55, firstly, descending a pressing head assembly 59 to press the ring iron on a material rail 501, and then driving a clamping jaw 581 to approach by the finger cylinder 58 to clamp two ends of the ring iron; after clamping, carrying the materials to the bottom core, loosening the clamping jaws 581, and pressing a ring iron on the bottom core by a pressure head assembly 59 under the action of a spring force to realize feeding;

(III) detection and rejection: the appearance detection device 6 is used for detecting the appearance of the ring iron, and products with unqualified appearance are sucked and conveyed out of the rotating jig device 1 through the defective product conveying device 7 to be removed;

(IV) welding: liquid tin liquid is contained in the tin pool 881, the speed reduction motor 883 drives the tin pool 881 to rotate slowly, the adjusting bolt 892 is rotated to adjust the height of the scraping plate 895, the lower end of the scraping plate 895 is positioned below the liquid level of the tin liquid, and the scraping plate 895 scrapes off an oxide layer on the liquid level during the rotation of the tin pool 881; then, under the action of the horizontal cylinder 82 and the driving motor 84, the spot welding needle 87 is driven to extend into the tin pool 881 for tin dipping, and then the spot welding needle 87 is moved to a welding station for welding;

(V) blanking: empty bar carrier 901 gets into at the feeding track, one side compresses tightly through drawing clamp plate 96, the opposite side realizes the location through side locating component 95 jack-up, after the complete location is realized to both sides, bottom locating component 94 jack-up realizes the location to bar carrier 901, then unloading handling mechanism 99 begins to work, carry the chip to in the bar carrier 901, fill with after, draw clamp plate 96 to begin to breathe in, hold the carrier, then sideshift cylinder 97 drives bar carrier 901 lateral shifting, material returned cylinder 931 drives material returned plate 98 motion at last, bar carrier 901 that will fill realizes the unloading.

Claims

1. The chip ring iron welding equipment is characterized by comprising a rack, and a rotating jig device (1), a bottom core heating device (2), a bottom core feeding device (3), a pressing assembly (4), a ring iron feeding device (5), an appearance detection device (6), a defective product carrying device (7), a welding device (8) and a discharging device (9) which are arranged on the rack; the rotary jig device (1) is arranged at the central part of the rack in a disc shape, and the bottom core feeding device (3) is connected with the bottom core heating device (2) and the rotary jig device (1); the bottom core heating device (2), the pressing assembly (4), the ring iron feeding device (5), the defective product carrying device (7), the appearance detection device (6), the welding device (8) and the discharging device (9) are sequentially arranged in a connecting mode along the circumference of the rotating jig device (1);

the rotary jig device (1) is used for carrying the bottom core to move circularly, the bottom core heating device (2) is used for heating the bottom core, and the bottom core feeding device (3) is used for conveying the bottom core to the rotary jig device (1); the pressing assembly (4) is used for pressing the bottom core in the jig, the ring iron feeding device (5) is used for feeding the ring iron, the appearance detection device (6) is used for detecting the ring iron, the defective product carrying device (7) is used for discharging unqualified products, the welding device (8) is used for welding the bottom core and the ring iron, and the discharging device (9) is used for discharging materials;

the rotary jig device (1) comprises a rotary table (11), a jig component (12), a divider and a jig driving component (13); the automatic feeding device is characterized in that the divider is fixed on the frame, the rotary table (11) is installed on an output shaft of the divider, a plurality of groups of jig assemblies (12) are arranged, the plurality of groups of jig assemblies (12) are uniformly installed on the periphery of the rotary table (11), and a bottom core feeding station (101), a pressing station (102), a ring iron feeding station (103), a detection station (104), a separation station (105), a welding station (106) and a blanking station (107) are arranged on the periphery of the rotary table (11); the jig driving assemblies (13) are arranged on the rack, three groups of jig driving assemblies (13) are arranged, and the three groups of jig driving assemblies (13) respectively correspond to the bottom core feeding station (101), the separating station (105) and the blanking station (107); the jig driving assembly (13) comprises a support (131), a driving cylinder (132), a connecting block (133) and a ball (134); the driving cylinder (132) is horizontally arranged on the support (131), the connecting block (133) is arranged at the telescopic end of the driving cylinder (132), and the ball (134) is hinged at the upper end of the connecting block (133);

the jig assembly (12) comprises a base (121), a material placing block (122), a fixed jig block (123), a sliding plate (124), a driving wedge block (125), a movable jig block (126), a first connecting plate (127), a spring (128) and a second connecting plate (129); the base (121) is fixed on the turntable (11), the material placing block (122) is installed on the base (121), the fixed jig block (123) is installed on the side of the material placing block (122), a notch is formed in the lower end of the material placing block (122), a sliding rail is arranged on the base (121), and the sliding plate (124) is movably connected to the base (121) through the sliding rail; the driving wedge block (125) is arranged on the sliding plate (124), and the movable jig block (126) is arranged at the upper end of the sliding plate (124); the end part of the driving wedge block (125) is provided with an inclined plane which corresponds to the ball (134) of the jig driving component (13); a notch groove (1261) is formed in the opposite side of the movable jig block (126) and the fixed jig block (123), and the shape of the notch groove (1261) is matched with the shape of the side edge of the bottom core; a vertical inward concave blind groove is formed in the side edge of the notch groove (1261), the upper end of the blind groove is closed, and a terminal of the bottom core is clamped in the blind groove to realize longitudinal fixation of the bottom core; the movable jig block (126) corresponds to the fixed jig block (123), and the movable jig block (126) and the fixed jig block (123) are respectively positioned above two sides of the material placing block (122); the first connecting plate (127) is arranged on the side of the base (121), the second connecting plate (129) is arranged on the side of the sliding plate (124), the spring (128) is pulled, and two ends of the spring (128) are respectively connected with the first connecting plate (127) and the second connecting plate (129).

2. The die-ring iron welding equipment according to claim 1, wherein the bottom core heating device (2) comprises a conveying belt assembly (21) and a heating box assembly (22); the heating box assembly (22) is arranged in the middle of the conveying belt assembly (21); the bottom core feeding device (3) comprises a connecting seat (31), a first moving module (32), a second moving module (33), a third moving module (34) and a suction block (35); first removal module (32), second remove module (33) and third and remove module (34) between mutually perpendicular and arrange, first removal module (32) is installed on connecting seat (31), the motion portion at first removal module (32) is installed in second removal module (33), the motion portion at second removal module (33) is installed in third removal module (34), absorb the motion end at third removal module (34) in piece (35), absorb the discharge end that piece (35) corresponds heating box subassembly (22).

3. The chip ring iron welding equipment according to claim 1, wherein the ring iron feeding device (5) comprises a vibration feeder, a support plate (51), a transverse moving cylinder (52), a transverse moving plate (53), a stepping motor (54), a synchronous belt assembly (55), a longitudinal moving plate (56), a folded plate (57), a finger cylinder (58) and a pressing head assembly (59); the supporting plate (51) is fixed on the rack, the transverse moving plate (53) moves on the supporting plate (51) through a sliding rail, the transverse moving cylinder (52) is installed on the supporting plate (51), and the telescopic end of the transverse moving cylinder (52) is connected with the transverse moving plate (53); the stepping motor (54) is arranged on the transverse moving plate (53), the synchronous belt component (55) is connected to the transverse moving plate (53), and the stepping motor (54) is connected with a belt wheel of the synchronous belt component (55); the longitudinal moving plate (56) is movably connected to the transverse moving plate (53) through a vertical sliding rail, and the longitudinal moving plate (56) is fixed with a synchronous belt of the synchronous belt component (55) through a buckle; the folding plate (57) is fixed on the longitudinal moving plate (56), the finger cylinder (58) is arranged on the folding plate (57), and the two moving ends of the finger cylinder (58) are provided with clamping jaws (581); one end of the folded plate (57) is provided with a sliding rail, a sliding plate (571) is arranged on the sliding rail, the pressing head assembly (59) is arranged on the sliding plate (571), and the pressing head assembly (59) is positioned between the two clamping jaws (581); a tension spring (572) is arranged between the sliding plate (571) and the folded plate (57), a vertical plate (573) is arranged on the back of the sliding plate (571), the vertical plate (573) is positioned above the folded plate (57), and the tension spring (572) presses the vertical plate (573) on the folded plate (57); the vibration feeder comprises circular vibration and straight vibration, a material rail (501) is arranged on the straight vibration, the discharge end of the material rail (501) protrudes outwards, and a convex part (502) is arranged on the material rail (501) at the end part; the discharge end of the vibration feeder is positioned below the finger cylinder (58); the longitudinal moving plate (56) is provided with a sensing piece, the transverse moving plate (53) is provided with a corresponding infrared sensor, and the sensing piece corresponds to the light path of the infrared sensor.

4. The die attach ring apparatus of claim 3, wherein said pressing head assembly (59) comprises a guide shoe (591), a lifting shaft (592), a pressing head (593), and a hold-down spring (594); the lifting shaft (592) is mounted in the guide seat (591) through a bearing, a stop block (595) is fixedly arranged at the upper end of the lifting shaft (592), a pressing head (593) is fixed at the lower end of the lifting shaft (592), the downward pressing spring (594) is sleeved outside the lifting shaft (592), the lower end of the downward pressing spring (594) abuts against the pressing head (593), and the upper end of the downward pressing spring (594) abuts against the guide seat (591); the lower end of the pressing head (593) is a cylinder, and the diameter of the cylinder is larger than the inner diameter of the ring iron.

5. The chip ring iron welding equipment according to claim 1, wherein the welding device (8) comprises a base (81), a horizontal cylinder (82), a horizontal moving plate (83), a driving motor (84), a first belt assembly (85), a lifting plate (86), a spot welding needle (87), a tin bath assembly (88) and a tin scraping assembly (89); the horizontal cylinder (82) is installed on the base (81), the horizontal moving plate (83) is movably connected to the base (81) through a sliding rail, and the telescopic end of the horizontal cylinder (82) is connected with the horizontal moving plate (83); the driving motor (84) is installed on the horizontal moving plate (83), the first belt assembly (85) is vertically connected to the horizontal moving plate (83), and the driving motor (84) drives the first belt assembly (85) to work; a vertical slide rail is arranged on the horizontal moving plate (83), an intermediate plate (851) is mounted on the slide rail, a clamping plate is arranged on the side of the intermediate plate (851), the clamping plate is fixed with a belt of the first belt assembly (85), an induction sheet is arranged at the upper end of the intermediate plate (851), a corresponding infrared sensor is arranged on the horizontal moving plate (83), and the induction sheet corresponds to the infrared sensor and controls the moving height of the intermediate plate (851); the lifting plate (86) is fixed on the middle plate (851); the spot welding pins (87) are arranged on the lifting plate (86), and the number of the spot welding pins (87) is four; the tin bath component (88) is arranged on the base (81), and the tin scraping component (89) is positioned above the tin bath component (88).

6. The chip ring iron welding equipment according to claim 5, characterized in that the tin pool assembly (88) comprises a tin pool (881), a second belt assembly (882) and a speed reducing motor (883), the tin pool (881) is in a ring shape, the lower end of the tin pool (881) is provided with a rotating shaft, the tin pool (881) is hinged on the base (81), the speed reducing motor (883) is installed on the base (81), and the output end of the speed reducing motor (883) is connected with the rotating shaft at the lower end of the tin pool (881) through the second belt assembly (882); a heating component is arranged in the tin pool (881); the tin scraping assembly (89) comprises an adjusting plate (891), an adjusting bolt (892), an installation clamping block (893), a pressing spring (894) and a scraping plate (895); the adjusting plate (891) is movably connected to the base (81) through a sliding rail, the scraper (895) is installed on the adjusting plate (891), and the scraper (895) is located in an annular groove of the tin pool (881); the scraper (895) is along the radial direction of the tin pool (881); be provided with blend stop (896) of L shape on base (81), pressure spring (894) upper end offset with blend stop (896) of L shape, pressure spring (894) lower extreme offsets with regulating plate (891), pressure spring (894) compress tightly regulating plate (891) downwards, installation clamp splice (893) fix on base (81), adjusting bolt (892) are installed on installation clamp splice (893), adjusting bolt (892) upper end offset with regulating plate (891).

7. The chip ring iron welding equipment according to claim 1, wherein the blanking device (9) comprises a moving sliding table (91), a first supporting plate (92), a second supporting plate (93), a bottom positioning assembly (94), a side end positioning assembly (95), a pulling and pressing plate (96), a side moving cylinder (97), a material returning plate (98) and a blanking carrying mechanism (99); the movable sliding table (91) is fixedly arranged, the first supporting plate (92) is installed on a movable part of the movable sliding table (91), the second supporting plate (93) is fixed on the rack, and the first supporting plate (92) and the second supporting plate (93) are located at the same height; the bottom positioning assembly (94) and the side end positioning assembly (95) are arranged below the first supporting plate (92), a feeding track is arranged on the first supporting plate (92), a strip-shaped carrier (901) for storing chips is arranged in the feeding track, the side end positioning assembly (95) is used for positioning the side of the strip-shaped carrier (901), two convex columns are arranged at the upper end of the bottom positioning assembly (94), the convex columns can be lifted, and the convex columns are inserted into the bottom of the strip-shaped carrier (901) to realize the positioning of the jig; the pulling and pressing plate (96) is arranged at the telescopic end of the lateral movement cylinder (97), the lateral movement cylinder (97) is arranged on the second supporting plate (93), a row of air suction holes (961) are formed in the pulling and pressing plate (96), and the pulling and pressing plate (96) corresponds to the lateral side of the feeding track of the first supporting plate (92); material returned plate (98) pass through slide rail swing joint on second layer board (93), second layer board (93) side still is provided with material returned cylinder (931), the flexible end of material returned cylinder (931) is connected with material returned plate (98), be provided with material returned track (932) on second layer board (93), material returned plate (98) correspond material returned track (932).