CN108891185B - A kind of automatic crystal bead series connection method - Google Patents

Abstract

A high-precision full-automatic crystal bead serial connection method. The invention discloses a high-precision full-automatic bead stringing method. The existing bead stringing device has higher requirement on the size of the hole of the crystal bead, and along with the aging and the abrasion of a machine, the precision degree of a crochet hook is reduced. The bead stringing device adopted by the invention comprises a bottom plate, a vibrating disc discharging mechanism, a rotary material moving mechanism, a material moving mechanical arm, a four-station clamping mechanism and a wire winding and looping mechanism. The material moving mechanical arm comprises a lifting motor, a lifting eccentric wheel, a lifting gear wheel disc, a square shaft, a sliding seat, a lifting seat, a transfer motor and a pneumatic clamping jaw. The four-station clamping mechanism comprises a rotating shaft assembly, a station conversion driving assembly, a bead clamping driving assembly and a clamping frame. The crystal bead clamp comprises a slide rail, a fixed clamping block, a movable clamping block, a bead clamping spring and a clamping pin. The wire winding and looping mechanism comprises a looping cutting assembly, a straightening assembly, a looping frame and a looping cutting driving assembly. The invention can realize the one-by-one continuous series connection of the double-hole crystal octagonal beads and realize the high automation of the series connection of the double-hole crystal octagonal beads.

Description

A kind of automatic crystal bead series connection method

technical field

The invention belongs to the technical field of automatic production of crystal beads, and in particular relates to an automatic crystal bead string connection method.

Background technique

Double-hole crystal octagonal bead is a very popular traditional Chinese hand-woven product. With its exquisite appearance design and various styles, it is very popular among customers in the field of curtain decoration, lamp decoration and other decoration. However, in the traditional manual processing method, the beads can only be connected by needle and thread, which not only has low production efficiency, but also has high labor costs, which greatly limits its market development. Although some automatic beading machines have appeared on the e-commerce platform, these beading machines are extremely low in automation, require a lot of manual assistance, and the styles of beading are also greatly limited, and the production efficiency is not much higher than that of manual work. promote.

In view of the above situation, some fully automatic beading machines with a higher degree of integration and automation have emerged. For example, the patent application number CN104057760A discloses an automatic beading and knotting machine for curtain pendants, which mainly realizes beading in series by passing a beading hook through a bead hole. The device is mainly composed of four modules: fixing, transmission, beading, and knotting. It has the advantages of convenient replacement of parts, reduced manual workload, and the ability to sequentially arrange beads. However, its shortcomings are also very obvious. It can only realize the stacking of beads, and it is difficult to realize a more complicated knotting method. However, the connection of beads is not limited to silk connection. Secondly, due to its working principle, there is also a big limitation on the hole size of its beads. And as the machine ages and wears out, it becomes more difficult for the crochet hook to hook the sling as accurately as it did at the beginning. Therefore, it is particularly important to invent an automatic device that can easily and quickly realize the beading in series.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a fully automatic crystal bead series connection method.

The bead stringing device adopted in the present invention includes a bottom plate, a vibrating disc discharging mechanism, a rotating material moving mechanism, a material moving mechanical arm, a four-station clamping mechanism and a wire winding and looping mechanism. The vibrating disc discharging mechanism includes a vibrating disc, a straight vibrator, a conveying rail, a discharging block, a blocking block and a blocking spring. The vibrating plate is fixed on the bottom plate. The conveying rail is fixed with the vibrating plate. The top surface of the conveying rail is provided with a conveying chute. The bottom surface of the conveying rail is fixed with the straight vibrator. The inlet end of the conveying chute is communicated with the material outlet of the vibrating plate. The inlet end of the discharge block is fixed with the outlet end of the conveying chute. The top surface of the discharge block is provided with a discharge slot. The outlet end of the bottom surface of the discharge trough is provided with a passing groove. The passing through groove communicates with the end face of the outlet end of the discharge block. The two blocking blocks are centrally arranged at the outlet end of the discharging block; the distance between the two blocking blocks is smaller than the groove width of the discharging chute; one end of the two blocking springs is fixed with one end of the two blocking blocks respectively, and the other One end is fixed with the discharge block.

The rotating material-moving mechanism includes a material-moving frame, a material-moving motor, a synchronous belt, a synchronous pulley, a tension block, a tension shaft, a material-moving plate, a sliding table cylinder, an upper support seat, a lower support seat, and an upper clamping tube. , lower clamping tube, fiber laser beam sensor and rotary motor. The moving frame is fixed on the bottom plate. The tensioning block and the moving frame form a sliding pair and are fixed by a set screw. The tensioning shaft is fixed on the tensioning block. The moving motor is fixed on the moving frame, and its output shaft is fixed coaxially with a synchronous pulley. The other synchronous pulley is supported on the tension shaft. The two timing pulleys are connected by a timing belt. The moving plate and the moving frame form a sliding pair and are fixed with the synchronous belt. The sliding table cylinder is fixed with the material moving plate. The upper support seat, the lower support seat and the two sliding blocks of the sliding table cylinder are respectively fixed. The top end of the upper clamp tube and the upper support seat constitute a rotating pair. The rotary motor is fixed with the lower support base. The output shaft of the rotary motor is fixed with the bottom end of the lower clamping tube. The upper pinch pipe and the lower pinch pipe are coaxially arranged. The transmitter and the receiver of the optical fiber laser beam sensor are respectively fixed on the upper support base and the lower support base.

The material moving mechanical arm includes a lift motor, a lift wheel, a lift stop wheel, a square shaft, a sliding seat, a lift seat, a connecting plate, a transfer motor and a pneumatic gripper. The sliding seat and the lifting motor are all fixed on the moving frame through the connecting plate. The output shaft of the lift motor is arranged horizontally and fixed eccentrically with the lift wheel. The square shaft and the sliding seat form a sliding pair. Both lifter discs are fixed on the square shaft. A lifting and moving plate is arranged on the lifting and lowering wheel disc. The lift wheels are located between the lift plates in the two lift wheel discs. The diameter of the lift wheel is equal to the distance between the two lift plates. The lifting seat is fixed with the bottom end of the square shaft. The transfer motor is fixed on the lift seat. The output shaft of the transfer motor is arranged vertically and fixed with the pneumatic gripper.

The four-station clamping mechanism includes a rotating shaft assembly, a station switching drive assembly, a ball-clamping drive assembly and a clamping frame. The clamping frame is fixed with the looping frame in the wire winding and looping mechanism. The rotating shaft assembly includes a central rotating shaft, a rotating drum, an inner mounting column, an outer mounting plate and a crystal bead clamp. The inner end of the central rotating shaft is supported on the clamping frame, the middle part is fixed with the inner mounting post, and the outer end is fixed with the outer mounting plate. The end surface of the inner installation column is provided with four first installation grooves uniformly distributed along the circumference of the inner installation column axis. The rotating drum is sleeved on the outer side of the inner mounting column and fixed with the inner mounting column. The outer end face of the outer mounting plate is provided with four second mounting grooves uniformly distributed along the circumference of the axis of the outer mounting plate. The cross-section of the second installation groove is exactly the same as the cross-section of the first installation groove. The four first installation grooves correspond to the four second installation grooves respectively.

The crystal bead clamp includes a slide rail, a fixed clamp block, a movable clamp block, a ball clamp spring and a detent pin. The inner end of the working side surface of the sliding rail is provided with a limiting protrusion, and the outer end is fixed with the fixed clamping block. The movable clamping block and the middle part of the working side of the sliding rail form a sliding pair. The two ends of the ball clamping spring are respectively fixed with the limiting protrusion and the opposite end faces of the movable clamping block. The inner end of the locking pin is fixed with the movable clamping block. There are four crystal bead fixtures. The four crystal bead clamps are respectively fixed in the four first installation grooves and the second installation grooves.

The station conversion drive assembly includes a station conversion motor, an encoder disk and a station detection sensor. The work position detection sensor adopts a photoelectric sensor. The station conversion motor is fixed with the clamping frame. One of the output shafts of the station conversion motor is fixed with the inner end of the central rotating shaft. The other output shaft of the station conversion motor is fixed with the encoder disc. The encoding disc is provided with four detection holes uniformly distributed along the circumference of its axis. The station detection sensor is fixed with the clamping frame. The detection head of the station detection sensor is arranged towards the encoder disk, and the distance from the axis of the encoder disk is equal to the distance from the axis of the detection hole to the axis of the encoder disk.

The ball clamping drive assembly includes a first air cylinder, a second air cylinder, a first dial and a second dial. The first air cylinder and the second air cylinder are both fixed with the clamping frame. The push-out rods of the first air cylinder and the second air cylinder are respectively fixed with the first dial plate and the second dial plate. The first dial is located just above the rotating shaft assembly. The second dial is located on one side of the shaft assembly. The distance from the first dial plate and the second dial plate to the axis of the central rotating shaft is smaller than the distance from the outer end face of the detent pin to the axis of the central rotating shaft.

Four crystal bead fixtures correspond to four workstations. The four stations are respectively a loading station, a first threading station, a second threading station and a cutting station which are arranged in a ring shape along the circumferential direction of the central rotating shaft. The working side of the slide rail in the crystal bead fixture at the loading station faces straight up.

The wire winding and looping mechanism includes a looping cutting assembly, a rolling straightening assembly, a looping frame and a looping cutting driving assembly. The ring frame is fixed on the bottom plate. The straightening assembly includes adjusting bolts, adjusting sliding blocks, U-shaped bearings and straightening frames. The rolling and straightening frame is provided with n adjusting sliders arranged in sequence along the length direction of the rolling and straightening frame, 3≤n≤20. All adjustment sliders and the straightening frame form a sliding pair that slides along the width direction of the straightening frame. The straightening frame is provided with n adjusting bolt groups. The adjusting bolt set consists of two adjusting bolts. The n adjusting bolt groups correspond to the n adjusting sliders one by one. The two adjusting bolts in the same adjusting bolt group are respectively located on both sides of the straightening frame, and are respectively pressed against the two ends of the corresponding adjusting sliding block. U-shaped bearings are supported on each of the n adjusting sliders. Sort the n adjustment sliders in sequence along the length of the straightening frame. The adjustment slider with an odd number is the first adjustment slider. The adjustment slider with an even number is the second adjustment slider. The U-shaped bearings on all first adjustment slides are aligned in the width direction of the straightening frame. The U-shaped bearings on all second adjustment slides are aligned across the width of the straightening frame. The U-shaped bearing on the first adjusting slide block and the U-shaped bearing on the second adjusting slide block are staggered in the width direction of the rolling frame.

There are two rolling and straightening components. The axes of the U-shaped bearings in the two straightening assemblies are perpendicular to each other. The rolling target lines of the two straightening components coincide. The rolling target line of the rolling and straightening component is the intersection line of the horizontal rolling target surface and the vertical rolling target surface. The target surface of lateral rolling is the symmetrical plane of the two ends of the U-shaped bearing. The target surface for longitudinal rolling is a plane that is equidistant from the axis of all U-shaped bearings.

The circle cutting assembly includes an adjusting bolt, a compression spring, an adjusting block, a first roller, a second roller, a cutting cam, a cutting rocker arm, a cutter mounting block, a circle cutter, a return spring, and a first guide wire. frame and second wire guide frame. The second roller is supported on the ring frame. The adjusting block and the ring frame form a sliding pair. The adjusting bolt is threadedly connected with the ring frame. Both ends of the compression spring are respectively fixed with the adjusting block and the adjusting bolt. The first roller is supported on the adjusting block. The first roller is directly above the second roller. The first wire guide frame and the second wire guide frame are both fixed on the ring frame, and the opposite ends are respectively close to the gap between the first roller and the second roller. Both the first wire guide frame and the second wire guide frame are provided with wire guide holes. The axes of the wire guide holes on the first wire guide frame and the second wire guide frame are both coincident with the rolling target lines of the two rolling straightening assemblies.

The cutter mounting block and the ring frame form a sliding pair. Both ends of the return spring are respectively fixed with the tool mounting block and the ring frame. The ring cutter is attached to the top of the cutter mounting block. The looping knife is provided with a first looping groove and a second looping groove. The first looping groove and the second looping groove are both arc-shaped and close to each other. The centerlines of the first looping groove and the second looping groove are on the same characteristic helix.

The cutting cam is supported on the ring frame. The middle part of the cutting rocker arm and the ring frame form a rotating pair. One end of the cutting rocker arm is fixed with a circular mounting block, and the other end is pressed against the bottom of the tool mounting block. The circular mounting block contacts the side of the cut-off cam. The looping and cutting drive assembly includes a looping driving member and a cutting driving member. Both the first roller and the second roller are driven by a ring driving member. The cutting cam is driven by the cutting drive. The fully automatic bead stringing method includes a pre-preparation method, a material feeding method, a material moving method and a wire threading method.

The pre-preparation method is as follows:

Load the double-hole crystal octagonal beads into the vibrating plate. Pass the machined end of the iron wire between the U-shaped bearing on the first adjustment slider and the U-shaped bearing of the second adjustment slider in the two straightening assemblies, and pass through the first wire frame and the second wire frame. After the guide wire hole, touch the inlet end of the first looping groove on the looping knife.

The feeding method is as follows:

Step 1. Start the vibrating plate and the direct vibrator. Driven by the vibrating disc, the double-hole crystal octagonal beads enter the conveyor rail and the discharge block one by one. The double-hole crystal octagonal bead located farthest from the vibrating plate reaches between the upper clamping tube and the lower clamping tube,

Step 2: Activate the cylinder of the sliding table, so that the upper clamping tube and the lower clamping tube slide toward each other, and clamp the double-hole crystal octagonal beads.

Step 3: The material-moving motor rotates forward, so that the material-moving plate slides toward the material-moving mechanical arm. The clamped double-hole crystal octagonal beads leave the discharge chute.

During the sliding process of the moving plate, if the receiver of the fiber laser beam sensor cannot detect the light emitted by the transmitter, the rotation motor rotates until the receiver of the fiber laser beam sensor detects the light emitted by the transmitter.

Step 4. After the moving plate reaches the rotation track of the pneumatic gripper, the moving motor stops. If the pneumatic gripper is not in the initial position, the upper and lower gripping pipes remain stationary and wait for the pneumatic gripper to reach the initial position. If the pneumatic gripper is in the initial position, the pneumatic gripper clamps the two opposite sides of the double-hole crystal octagonal bead. The cylinder of the sliding table drives the upper clamping tube and the lower clamping tube to slide opposite to each other, releasing the double-hole crystal octagonal beads. Go to step five.

Step 5: Reverse the feeding motor to reset the feeding plate, and repeat steps 2, 3 and 4.

The transfer method is as follows:

Step 1. If the double-hole crystal octagonal bead is clamped on the pneumatic gripper, the transfer motor rotates forward, so that the double-hole crystal octagonal bead on the pneumatic gripper reaches the top of the crystal bead fixture at the feeding station.

Step 2: If the crystal bead clamp at the feeding station holds the double-hole crystal octagonal bead, the pneumatic gripper remains stationary, waiting for the crystal bead clamp that does not hold the double-hole crystal octagonal bead to enter the feeding station.

If the crystal bead clamp at the feeding station does not hold the double-hole crystal octagonal bead, the first cylinder of the crystal bead clamp at the feeding station is retracted, so that the inner movable clamping block of the crystal bead clamp at the feeding station moves toward the Slide away from the direction of the fixed clamp.

Step 3: The lifting motor rotates forward, so that the square shaft slides downward, and the double-hole crystal octagonal beads on the pneumatic gripper reach between the moving and fixed clamping blocks in the crystal bead fixture at the feeding station.

Step 4: The first cylinder is pushed out, so that the inner movable clamping block and the fixed clamping block of the crystal bead clamp at the feeding station clamp the double-hole crystal octagonal beads.

Step 5. The pneumatic gripper loosens the double-hole crystal octagonal bead, and the lifting motor reverses, so that the square shaft slides up and resets. Go to step six.

Step 6: The transfer motor is reversed, the pneumatic gripper is reset, and steps 1, 2, 3, 4 and 5 are repeated.

The threading method is as follows:

Step 1. If the crystal bead fixture at the feeding station does not hold the double-hole crystal octagonal bead, wait for the pneumatic gripper to load the double-hole crystal octagonal bead into the crystal bead fixture at the feeding station.

If the crystal bead clamp at the feeding station is clamped with a double-hole crystal octagonal bead, the station switching motor rotates so that the crystal bead clamp at the feeding station reaches the first threading station. Then go to step two.

Step 2: If the crystal bead clamp on the second threading station does not hold the double-hole crystal octagonal bead, perform step 1 again.

If the crystal bead clamps on the first threading station and the second threading station both hold double-hole crystal octagonal beads, go to step three.

Step 3: The wire feeding motor and the wire discharging motor rotate, and the processing end of the first roller and the second roller drive the iron wire to slide on the inlet end of the first ring groove. After the iron wire is bent in the first looping groove, it slides out from the outlet end of the first looping groove and passes through the double-hole crystal octagonal beads on the first wire-threading station and the second wire-threading station. After the wire is looped, it is slid into the inlet end of the second looping groove.

Step 4. After the processing end of the iron wire reaches the exit end of the second looping groove, the wire feeding motor and the wire discharging motor stop, and the rotation of the cutting motor is cut off, so that the looping knife slides upward, and the iron wire is removed from the entrance end of the first looping groove. cut off.

Step 5. If the crystal bead fixture at the feeding station does not hold the double-hole crystal octagonal bead, wait for the pneumatic gripper to load the double-hole crystal octagonal bead into the crystal bead fixture at the feeding station.

If the crystal bead clamp at the feeding station is clamped with a double-hole crystal octagonal bead, the station switching motor rotates so that the crystal bead clamp at the second threading station reaches the unloading station.

Step 6. The second cylinder is retracted, so that the inner movable clamping block of the crystal bead clamp at the blanking station slides in the direction away from the fixed clamping block, and the double-hole crystal octagonal bead held by the crystal bead clamp at the blanking station falls off. Falling. Go to step seven.

Step 7. The second cylinder is pushed out, so that the movable clamp block in the crystal bead clamp at the blanking station is reset. Repeat steps two, three, four, five and six.

Further, the bead stringing device adopted in the present invention also includes a wire feeding mechanism. The wire feeding mechanism includes a wire feeding motor, a wire feeding disc, a wire feeding bracket, a wire loading rod, an outer guide post, an outer guide sleeve, a wire guide rod, a wire feeding assembly and a detection assembly. The wire feeding tray is supported on the wire feeding bracket. The wire discharging motor is fixed on the wire feeding bracket. The output shaft of the wire outlet motor is installed coaxially with the wire feeder. The wire feeding reel is provided with four adjusting grooves arranged along the radial direction of the wire feeding reel. The bottom ends of the four outer guide columns evenly distributed along the circumference of the wire feeding tray are all fixed with the top of the wire feeding bracket. The four outer guide sleeves and the four outer guide posts respectively constitute sliding pairs, which are respectively fixed by tightening screws. The four outer guide sleeves are respectively fixed with the bottom ends of the four guide screw rods. The top ends of the four wire guide rods are all provided with a first wire guide ring. The wire exit assembly is located between two adjacent guide rods. The wire output assembly includes a wire casing, a rocker and a wire spring. The wire outlet shell is fixed with the wire feeding bracket. The inner end of the rocker is hinged with the wire casing. Both ends of the wire spring are respectively fixed with the wire feed bracket and the rocker. The outer end of the rocker is provided with a second wire loop.

The detection assembly includes a wire-free detection piece and a wire-out lag detection piece. The wireless detection part consists of four annular Hall sensors. The detection ports of the four annular Hall sensors are coaxially fixed with the first guide wire loops on the four guide wire rods. The wire lag detection piece includes a detection metal block and two lag Hall sensors; the detection metal block is fixed on the rocker; the two lag Hall sensors are fixed in the wire outlet shell; the detection metal block and The distances from the two hysteresis Hall sensors to the joystick and the hinge shaft of the wire casing are equal. The two hysteresis Hall sensors form an angle of 120° with the connection line between the rocker and the hinge shaft of the wire casing. When the outer end of the rocker is not stressed, the detection metal block is close to one of the hysteresis Hall sensors. Another hysteresis Hall sensor is located on the side of the rocker near the straightening assembly.

Further, two material blocking spring sheets are centered on the end face of the outlet end of the discharging block. The distance between the two retaining spring sheets is smaller than the groove width of the discharge chute.

Further, the rotating material transfer mechanism also includes a contact piece, a starting point limit sensor and an end point limit sensor. The starting point limit sensor and the end point limit sensor are both photoelectric sensors and are fixed on the moving rack. The top of the moving plate is fixed with one end of the contact piece.

The distance between the laser emitting head of the transmitter of the optical fiber laser beam sensor and the axis of the upper clamping tube is equal to the distance from the axis of the threading hole on the double-hole crystal octagonal bead to the central axis of the double-hole crystal octagonal bead.

Further, when the upper clamp pipe and the lower clamp pipe are located at the extreme position of the end point, the double-hole crystal octagonal ball between the upper clamp pipe and the lower clamp pipe is located on the rotation track of the upper jaw body of the pneumatic clamping jaw. The crystal bead fixture at the feeding station is located on the rotation track of the upper jaw body of the pneumatic gripper.

Further, the first installation groove is a through groove, and the cross section is square. The side surface of the outer mounting plate is provided with four mounting holes uniformly distributed along the circumference of its own axis. The bottom ends of the four installation holes are respectively communicated with the four first installation grooves. Four bayonet sliding grooves uniformly distributed along the circumference of its own axis are provided on the side surface of the inner mounting column. The bottom ends of the four bayonet sliding grooves are respectively communicated with the four second installation grooves. The side surface of the rotating drum is provided with four limit chute uniformly distributed along the circumference of its axis. The four limit chute and the four bayonet chute respectively correspond to the circumferential positions of the drum.

A rod insertion hole is opened on the outer surface of the movable clamping block. A threaded hole is opened on the outer surface of the fixed clamping block. The working sides of the slide rails in the four crystal bead fixtures all face the direction away from the axis of the central rotating shaft. The four end bolts respectively pass through the four mounting holes on the outer mounting plate, and are respectively threadedly connected with the threaded holes of the inner fixed clamping block of the four crystal bead clamps. The inner ends of the detent pins of the four crystal bead clamps respectively pass through the four detent chutes and extend into the corresponding insertion rod holes. The outer ends of the detent pins of the four crystal bead clamps protrude out of the four limit chute respectively. The middle part of the locking pin is provided with an annular protrusion. The annular protrusion of the detent pin is located between the rotating drum and the inner mounting post.

Locking ball blocks are provided on both side edges of the opposite end faces of the movable clamping block and the fixed clamping block. Locking bead grooves are provided on mutually adjacent edges on the side surfaces of the two locking ball blocks on the movable clamping block that are away from the movable clamping block. Locking grooves are provided on mutually adjacent edges on the sides of the two locking ball blocks on the fixed clamping block that are away from the fixed clamping block.

Further, the first dial plate and the second dial plate are both located on the side of the four detent pins close to the outer mounting plate.

Further, when the looping knife is located at the lower pole, the end of the wire guide hole on the second wire guide that is away from the first wire guide is facing the inlet end of the first looping groove. When the looping knife is at the upper pole, the end of the wire guide hole on the second wire guide that is far away from the first wire guide is lower than the inlet end of the first looping groove.

Further, the looping driving member includes a first transmission shaft, a second transmission shaft, a wire feeding motor, a first pulley, a second pulley, a first gear and a second gear. The first transmission shaft and the second transmission shaft are both supported on the ring frame. The wire feeding motor is fixed on the ring frame. One end of the first transmission shaft is fixed with the first gear, and the other end is fixed with the first roller. One end of the second transmission shaft is fixed with the second gear and the second pulley, and the other end is fixed with the second roller. The second gear meshes with the first gear. The output shaft of the wire feeding motor is fixed with the first pulley. The first pulley and the second pulley are connected by a first transmission belt.

The cutting drive member includes a third transmission shaft, a cutting motor, a third pulley and a fourth pulley. The third transmission shaft is supported on the ring frame. The cutting motor is fixed on the ring frame. One end of the third transmission shaft is fixed with the fourth pulley, and the other end is fixed with the cam. Cut off the output shaft of the motor and fix it with the third pulley. The third pulley and the fourth pulley are connected by the second transmission belt.

Further, the characteristic helix is a cylindrical helix. The diameters of the wire guide holes on the first wire guide frame and the second wire guide frame, the distance between the first roller and the second roller, and the lead of the characteristic helix are equal. The crystal bead fixtures at the first threading station and the second threading station both hold double-hole crystal octagonal beads, and the two threading holes of the double-hole crystal octagonal bead are respectively located at the two sides of the corresponding crystal bead fixture. In the side state, there is a characteristic circle that simultaneously passes through the first threading station and the threading hole where the double-hole crystal octagonal beads on the crystal bead fixture are adjacent to each other at the first threading station and the second threading station. The diameter of the characteristic circle is equal to the diameter of the characteristic helix, and the center of the circle is on the central axis of the characteristic helix. The feature circle intersects the first loop slot or the second loop slot.

The beneficial effects that the present invention has are:

1. The present invention can realize the continuous series connection of double-hole crystal octagonal beads one by one, and realizes a high degree of automation of the double-hole crystal octagonal bead series connection.

2. The four-station clamping mechanism in the present invention can make material feeding, bead stringing, and material unloading to be carried out synchronously.

3. The rotating material transfer mechanism in the present invention can detect and adjust the spatial position and posture of the double-hole crystal octagonal beads without manual screening of materials.

4. The present invention can transport the double-hole crystal octagonal beads one by one to the rotating material transfer mechanism.

5. The wire feeding mechanism in the present invention can detect whether there is iron wire and whether the wire output is delayed.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the bead stringing device adopted in the present invention;

Fig. 2 is the perspective view of the vibrating disc discharging mechanism in the bead stringing device adopted in the present invention;

Fig. 3 is the perspective view of the discharging block in the bead stringing device adopted in the present invention;

Fig. 4 is the perspective view of the rotating material transfer mechanism in the bead stringing device adopted in the present invention;

5 is a perspective view of a material-moving robotic arm in the bead stringing device adopted in the present invention;

6 is a perspective view of a four-station clamping mechanism in the bead stringing device adopted in the present invention;

7 is a perspective view of a rotating shaft assembly in the bead stringing device adopted in the present invention;

8 is a perspective view of a crystal bead fixture in the bead stringing device adopted in the present invention;

Fig. 9 is the assembly schematic diagram of the station switching drive assembly and the bead clamping drive assembly in the bead stringing device adopted in the present invention;

Figure 10 is a perspective view of the wire-winding and looping mechanism in the bead stringing device adopted in the present invention;

Figure 11 is a perspective view of the straightening assembly in the bead stringing device adopted in the present invention;

Figure 12 is a perspective view of the circular cutting assembly in the bead stringing device adopted in the present invention;

Figure 13 is a perspective view of the ring-cutting drive assembly in the bead stringing device adopted in the present invention;

14 is a perspective view of the wire feeding mechanism in the bead stringing device used in the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings.

As shown in Figures 1, 2 and 3, a bead stringing device used in a fully automatic crystal bead stringing method includes a base plate 1, a vibrating disc discharging mechanism 2, a rotating material transfer mechanism 3, a material moving mechanical arm 4, and four workstations. Clamping mechanism 5, wire winding mechanism 6 and wire feeding mechanism. The vibrating disc discharging mechanism 2 includes a vibrating disc 2-1, a straight vibrator, a conveying rail 2-2, a discharging block 2-3, a blocking block 2-5 and a blocking spring. A plurality of double-hole crystal octagonal beads to be threaded are placed in the vibrating plate 2-1. The vibrating plate 2-1 is fixed on the base plate 1 . The conveying rail 2-2 is fixed with the vibrating plate 2-1. The top surface of the conveying rail 2-2 is provided with a conveying chute. The width of the conveying chute is equal to the distance between the two opposite sides of the double-hole crystal octagonal bead. The conveying chute is not communicated with the bottom surface of the conveying rail 2-2. A straight vibrator is fixed on the bottom surface of the conveying rail 2-2. The inlet end of the conveying chute is communicated with the material outlet of the vibrating plate 2-1. The inlet end of the discharge block 2-3 is fixed with the outlet end of the conveying chute. The top surface of the discharge block 2-3 is provided with a discharge groove. The outlet end of the conveying chute on the conveying rail 2-2 communicates with the inlet end of the discharging chute on the discharging block 2-3. The cross-sectional shape of the discharge chute is the same as that of the conveying chute. The outlet end of the bottom surface of the discharge chute is provided with a pass-through slot 2-4. The passing groove 2-4 communicates with the end face of the outlet end of the discharging block 2-3. The outlet end of the discharging block 2-3 is centrally provided with two blocking blocks 2-5. The middle part of the blocking block 2-5 is hinged with the discharging block 2-3. One end of the two stopper springs is fixed with one end of the two stopper blocks 2-5 respectively, and the other end is fixed with the discharge block. The distance between the two blocking blocks 2-5 is smaller than the groove width of the discharge chute, so that the blocking block 2-5 can block the double-hole crystal octagonal beads on the discharging groove, so that the double-hole crystal octagonal beads cannot be used in the direct vibrator. The action slides out and falls.

As shown in Figures 1 and 4, the rotating material transfer mechanism 3 includes a material transfer frame 3-1, a material transfer motor, a synchronous belt 3-3, a tension block, a tension shaft, a synchronous pulley 3-4, and a material transfer plate 3 -5, slide cylinder 3-6, upper support 3-7, lower support 3-8, upper clamp 3-9, lower clamp 3-10, fiber laser beam sensor 3-11, contact piece, Start limit sensor 3-12, end limit sensor 3-13 and rotary motor 3-2. The starting point limit sensor 3-12 and the end point limit sensor 3-13 all use photoelectric sensors. Both the starting point limit sensor 3-12 and the end point limit sensor 3-13 set at the same height are fixed on the moving frame 3-1. The moving frame 3-1 is fixed on the base plate 1. The tension block and the moving frame form a sliding pair and are fixed by set screws. The tension shaft is fixed on the tension block. The moving motor is fixed on the moving frame, and its output shaft is fixed coaxially with a synchronous pulley. Another timing pulley 3-4 is supported on the tensioning shaft. The two timing pulleys 3-4 are connected by a timing belt. By adjusting the position of the tension block, the tension of the timing belt 3-3 can be realized. The moving plate 3-5 and the moving frame 3-1 form a sliding pair, and are fixed with the synchronous belt 3-3.

The top of the moving plate 3-5 is fixed with one end of the contact piece. When the moving plate 3-5 moves to the starting point limit position, the other end of the contact piece is close to the starting point limit sensor 3-12. When the moving plate 3-5 moves to the end limit position, the other end of the contact piece is close to the end limit sensor 3-13. The contact pieces are vertically aligned with the starting point limit sensor 3-12 and the end point limit sensor 3-13.

The model of slide cylinder 3-6 is MHF2-16D. The sliding table cylinder 3-6 is fixed with the moving plate 3-5. The upper support seat 3-7, the lower support seat 3-8 and the two sliding blocks of the sliding table cylinder 3-6 are respectively fixed. The top end of the upper clamp tube 3-9 and the upper support seat 3-7 constitute a rotating pair. The rotary motor 3-2 is fixed with the lower support base 3-8. The output shaft of the rotary motor 3-2 is fixed with the bottom end of the lower clamping tube 3-10. The upper clamping pipe 3-9 and the lower clamping pipe 3-10 are arranged coaxially.

The transmitter and receiver of the fiber laser beam sensor 3-11 are respectively fixed on the upper support 3-7 and the lower support 3-8. The transmitter and receiver of the fiber laser beam sensor 3-11 are arranged up and down. The distance between the laser head of the transmitter of the fiber laser beam sensor 3-11 and the axis of the upper clamping tube 3-9 is equal to the distance from the axis of the threading hole on the double-hole crystal octagonal bead to the center axis of the double-hole crystal octagonal bead. The two sliding table cylinders 3-6 are respectively used to drive the upper support seat 3-7 and the lower support seat 3-8 to slide toward or away from each other, so that the upper clamp pipe 3-9 and the lower clamp pipe 3-10 are clamped to the conveying track. Double-hole crystal octagonal beads on the outlet side. The rotary motor 3-2 is used to drive the double-hole crystal octagonal bead to rotate around its own axis. If the receiver of the fiber laser beam sensor 3-11 detects the infrared light emitted by the transmitter, the threading hole on the double-hole crystal octagonal bead reaches between the receiver and the transmitter of the fiber laser beam sensor 3-11. It is regarded as the double-hole crystal octagonal beads reaching the preset spatial pose. Therefore, each double-hole crystal octagonal bead can be transported to the material-moving robotic arm 4 in the exact same spatial pose.

As shown in Figures 1 and 5, the material moving arm 4 includes a lift motor 4-1, a lift wheel 4-2, a lift stop wheel 4-3, a square shaft 4-4, a sliding seat 4-5, and a lifting seat 4- 6. Transfer motor 4-7 and pneumatic gripper 4-8. Both the sliding seat 4-5 and the lifting motor 4-1 are fixed on the moving frame 3-1 through the connecting plate. The output shaft of the lift motor 4-1 is arranged horizontally and fixed eccentrically with the lift wheel 4-2. The cross section of the lift wheel 4-2 is circular. The sliding seat 4-5 is provided with a square hole whose central axis is vertically arranged. The square shaft 4-4 and the square hole on the sliding seat 4-5 constitute a sliding pair. The two lifting gear wheels 4-3 are both fixed on the square shaft 4-4. A lifting and moving plate is arranged on the lifting and lowering wheel disc 4-3. The lifting wheel 4-2 is located between the lifting and moving plates in the two lifting and lowering wheel discs 4-3. And the diameter of the lift wheel 4-2 is equal to the distance between the two lift plates. Since the output shaft of the lift motor 4-1 and the lift wheel 4-2 are eccentrically arranged, when the lift motor 4-1 drives the lift wheel 4-2 to rotate, the two lift wheel discs 4-3 will drive the square shaft 4-4 Swipe up and down. The lifting seat 4-6 is fixed with the bottom end of the square shaft 4-4. The transfer motor 4-7 is fixed on the lift base 4-6. The output shaft of the transfer motor 4-7 is arranged vertically and fixed with the pneumatic gripper 4-8.

When the upper clamp pipe and the lower clamp pipe are at the extreme position of the end point, the double-hole crystal octagonal ball between the upper clamp pipe and the lower clamp pipe is located on the rotation track of the upper jaw body of the pneumatic clamping jaw 4-8.

As shown in FIGS. 1 , 6 and 7 , the four-station clamping mechanism 5 includes a rotating shaft assembly 7 , a station switching drive assembly 8 , a ball clamping drive assembly 9 and a clamping frame 10 . The clamping frame 10 is fixed with the looping frame in the wire winding and looping mechanism. The rotating shaft assembly 7 includes a central rotating shaft 7-1, a rotating drum 7-2, an inner mounting post 7-3, an outer mounting plate 7-4 and a crystal bead fixture 7-5. The inner end of the central rotating shaft 7-1 is supported on the clamping frame 10, the middle part is fixed with the inner mounting post 7-3, and the outer end is fixed with the outer mounting plate 7-4. The outer end face of the inner mounting column 7-3 is provided with four first mounting grooves uniformly distributed along the axis of the inner mounting column 7-3 in the circumferential direction. The first installation groove is a through groove, and the cross section is square. The rotating drum 7-2 is sleeved on the outer side of the inner mounting column 7-3, and is fixed with the inner mounting column 7-3.

The outer end face of the outer mounting plate 7-4 is provided with four second mounting grooves uniformly distributed along the circumference of the axis of the outer mounting plate 7-4. The cross-section of the second installation groove is exactly the same as the cross-section of the first installation groove. The four first installation grooves correspond to the four second installation grooves respectively. The side surface of the outer mounting plate 7-4 is provided with four mounting holes uniformly distributed along the circumferential direction of its axis. The bottom ends of the four installation holes are respectively communicated with the four first installation grooves. Four bayonet chutes uniformly distributed along the circumference of its axis are provided on the side surface of the inner mounting post 7-3. The bottom ends of the four bayonet sliding grooves are respectively communicated with the four second installation grooves. The side surface of the rotating drum 7-2 is provided with four limit chute uniformly distributed along the circumference of its axis. The four limit chutes correspond to the four bayonet chutes respectively.

As shown in Figures 1, 6, 7 and 8, the crystal bead clamp 7-5 includes a slide rail 7-5-1, a fixed clamp block 7-5-2, a movable clamp block 7-5-3, a bead clamp spring and a clamp Bit pins 7-5-4. The inner end of the working side of the slide rail 7-5-1 is provided with a limit protrusion, and the outer end is fixed with the fixed clamping block 7-5-2. The movable clamping block 7-5-3 and the middle part of the working side of the slide rail 7-5-1 constitute a sliding pair. The two ends of the ball-clamping spring are respectively fixed with the limit protrusion and the opposite end faces of the movable clamp block 7-5-3. Locking ball blocks are provided on both side edges of the opposite end faces of the movable clamping block 7-5-3 and the fixed clamping block 7-5-2. Locking bead grooves are provided on the mutually adjacent edges on the sides of the two locking ball blocks on the movable clamping block 7-5-3 away from the movable clamping block 7-5-3. Locking grooves are provided on the mutually adjacent edges of the two ball locking blocks on the fixed clamping block 7-5-2 away from the fixed clamping block 7-5-2. A threaded hole is provided on the outer surface of the fixed clamping block 7-5-2. A rod insertion hole is provided on the outer side of the movable clamp block 7-5-3. The cross-section of the crystal bead clamp 7-5 after the detent pin 7-5-4 is removed is exactly the same as the cross-section of the first installation groove.

There are four crystal bead fixtures 7-5 in total. The four crystal bead clamps 7-5 respectively extend into the four first installation grooves and the second installation grooves. The working sides of the inner slide rails 7-5-1 of the four crystal bead fixtures 7-5 are all facing away from the axis of the central rotating shaft 7-1. The four end bolts respectively pass through the four mounting holes on the outer mounting plate 7-4, and are respectively threadedly connected with the threaded holes of the inner fixed clamping block 7-5-2 of the four crystal bead clamps 7-5. The inner ends of the detent pins 7-5-4 of the four crystal bead fixtures 7-5 respectively pass through the four detent chutes and extend into the corresponding insertion rod holes. The outer ends of the detent pins 7-5-4 of the four crystal bead fixtures 7-5 respectively protrude out of the four limit chutes. The middle part of the locking pin 7-5-4 is provided with an annular protrusion. The annular protrusion of the locking pin 7-5-4 is located between the rotating drum 7-2 and the inner mounting post 7-3.

As shown in Figures 1, 6 and 9, the station switching drive assembly 8 includes a station switching motor 8-1, an encoder disk 8-2 and a station detecting sensor 8-3. The station detection sensor 8-3 adopts a diffuse reflection photoelectric sensor. The station conversion motor 8-1 is a dual output shaft motor. The station switching motor 8 - 1 is fixed to the clamping frame 10 . One of the output shafts of the station switching motor 8-1 is fixed to the inner end of the central rotating shaft 7-1, so that the working station switching motor 8-1 can drive the central rotating shaft 7-1 to rotate. The other output shaft of the station conversion motor 8-1 is fixed with the encoder disk 8-2. The encoder disc 8-2 is provided with four detection holes uniformly distributed along the circumference of its axis. The position detection sensor 8 - 3 is fixed to the clamping frame 10 . The detection head of the station detection sensor 8-3 is disposed toward the encoder disk 8-2, and the distance from the axis of the encoder disk 8-2 is equal to the distance from the axis of the detection hole to the axis of the encoder disk 8-2. When the station detection sensor 8-3 changes from not detecting the detection hole to detecting the detection hole, it is deemed that one station switching is completed.

The ball clamping drive assembly 9 includes a first air cylinder 9-1, a second air cylinder 9-4, a first dial 9-2 and a second dial 9-3. Both the first cylinder 9 - 1 and the second cylinder 9 - 4 are fixed to the clamping frame 10 . The push-out rods of the first air cylinder 9-1 and the second air cylinder 9-4 are respectively fixed to the first dial 9-2 and the second dial 9-3. The first dial 9 - 2 is located just above the rotating shaft assembly 7 . The second dial 9 - 3 is located on one side of the rotating shaft assembly 7 . The distance from the first dial 9-2 and the second dial 9-3 to the axis of the central rotating shaft 7-1 is smaller than the distance from the outer end face of the detent pin 7-5-4 to the axis of the central rotating shaft 7-1. The first dial 9-2 and the second dial 9-3 are both located on the side of the four detent pins 7-5-4 close to the outer mounting plate 7-4. Through the expansion and contraction of the first air cylinder 9-1 and the second air cylinder 9-4, the crystal bead clamp 7-5 located directly above the crystal bead clamp 7-5 and the inner locking pin 7 of the crystal bead clamp 7-5 corresponding to the second dial 9-3 can be pushed -5-4 movement, and then realize the sliding of the movable clamp block 7-5-3.

Four crystal bead fixtures 7-5 correspond to four workstations. The four stations are respectively a feeding station, a first threading station, a second threading station, and an unloading station which are arranged in a ring shape along the circumferential direction of the central rotating shaft 7-1. The working side of the slide rail 7-5-1 in the crystal bead fixture 7-5 in the feeding station is facing upward. The feeding station corresponds to the position of the first dial 9-2. The blanking station corresponds to the position of the second dial 9-3. The crystal bead fixture 7-5 at the feeding station is located on the rotation track of the upper jaw body of the pneumatic gripper 4-8.

As shown in FIGS. 1 , 10 and 11 , the wire looping mechanism 6 includes a loop cutting assembly 11 , a rolling straightening assembly 12 , a looping frame 13 and a loop cutting driving assembly 14 . The ring frame 13 is fixed on the bottom plate. The straightening assembly 12 includes an adjusting bolt 12-1, an adjusting sliding block 12-2, a U-shaped bearing 12-3 and a straightening frame 12-4. The rolling and straightening frame 12-4 is provided with seven adjusting sliders 12-2 arranged in sequence along the length direction of the rolling and straightening frame 12-4. All the adjusting sliders 12-2 and the straightening frame 12-4 form a sliding pair that slides along the width direction of the straightening frame 12-4. Seven adjusting bolt groups are arranged on the straightening frame 12-4. The adjusting bolt group consists of two adjusting bolts 12-1. The seven adjusting bolts 12-1 are in one-to-one correspondence with the seven adjusting sliders 12-2. The two adjusting bolts 12-1 in the same group of adjusting bolts 12-1 are respectively located on both sides of the straightening frame 12-4, and respectively abut against both ends of the corresponding adjusting slider 12-2. U-shaped bearings 12-3 are supported on the seven adjusting sliders 12-2. The seven adjusting sliders 12-2 are sequentially ordered along the length direction of the straightening frame 12-4. The adjustment slider 12-2 with an odd number is the first adjustment slider. The adjustment slider 12-2 with an even number is the second adjustment slider. The U-shaped bearings 12-3 on all the first adjusting slides are aligned in the width direction of the straightening frame 12-4. The U-shaped bearings 12-3 on all the second adjusting slides are aligned in the width direction of the straightening frame 12-4. The U-shaped bearing 12-3 on the first adjusting slider and the U-shaped bearing 12-3 on the second adjusting slider are arranged staggered in the width direction of the rolling frame 12-4.

The position of the adjustment slider 12-2 can be adjusted by rotating the two adjustment bolts 12-1 in the same adjustment bolt 12-1 group, thereby adjusting the U-shaped bearing 12-3 on the first adjustment slider and the second adjustment slider The staggered degree of the U-shaped bearing 12-3 on the upper part changes the clamping degree of the U-shaped bearing 12-3 to the iron wire.

As shown in Figures 1, 10 and 12, there are two straightening assemblies. The axes of the U-shaped bearings 12-3 in the two straightening assemblies are perpendicular to each other. The rolling target lines of the two straightening components coincide. The rolling target line of the rolling and straightening component is the intersection line of the horizontal rolling target surface and the vertical rolling target surface. The target surface of transverse rolling is the symmetrical plane of the two end surfaces of the U-shaped bearing 12-3 in the rolling and straightening assembly. The longitudinal rolling target surface is a plane that is equidistant from the axes of all U-shaped bearings 12-3 in the rolling assembly.

The circular cutting assembly 11 includes adjustment bolts, compression springs, adjustment blocks, a first roller 11-1, a second roller 11-2, a cutting cam 11-3, a cutting rocker arm 11-4, and a tool mounting block 11- 5. Loop knife 11-6, return spring, first wire guide 11-7 and second wire guide 11-8. The second drum 11 - 2 is supported on the ring frame 13 . The adjusting block and the ring frame form a sliding pair. The adjusting bolt is threadedly connected with the ring frame. Both ends of the compression spring are respectively fixed with the adjusting block and the adjusting bolt. The adjusting bolt is located just above the adjusting block. The first roller 11-1 is supported on the adjusting block. The first roller 11-1 is located directly above the second roller 11-2. By turning the adjusting bolt, the distance between the adjusting bolt and the adjusting block can be changed, thereby changing the pressure of the compression spring on the first roller, and changing the force of the first roller 11-1 and the second roller 11-2 to squeeze the wire. The rotation of the first roller 11-1 and the second roller 11-2 will drive the iron wire to be looped to the looping knife 11-6.

The first wire guide frame 11-7 and the second wire guide frame 11-8 are both fixed on the ring frame 13, and the opposite ends are respectively close to the gap between the first roller 11-1 and the second roller 11-2. Both the first wire guide frame 11-7 and the second wire guide frame 11-8 are provided with wire guide holes. The axes of the wire guide holes on the first wire guide frame 11-7 and the second wire guide frame 11-8 coincide with the rolling target lines of the two rolling straightening assemblies.

The cutter mounting block 11-5 and the ring frame 13 constitute a sliding pair that slides in the vertical direction. Both ends of the return spring are fixed to the tool mounting block 11-5 and the ring frame 13 respectively. The ring cutter 11-6 is fixed on the top of the cutter mounting block 11-5. The looping knife 11-6 is provided with a first looping groove and a second looping groove. The first looping groove and the second looping groove are both arc-shaped and close to each other. The centerlines of the first looping groove and the second looping groove are on the same characteristic helix. The characteristic helix is a cylindrical helix with a lead equal to the diameter of the wire to be looped, and a diameter equal to the diameter of the wire to be looped.

The cutting cam 11 - 3 is supported on the ring frame 13 . The middle part of the cutting rocker arm 11-4 and the ring frame 13 constitute a rotating pair. One end of the cutting rocker arm 11-4 is fixed with a circular mounting block, and the other end is pressed against the bottom of the cutter mounting block 11-5. The circular mounting block is in contact with the side of the cut-off cam 11-3. The loop cutter 11-6 can be driven to slide up and down by the rotation of the cutting cam 11-3. When the looping knife 11-6 is located at the lower pole, the end of the wire guide hole on the second wire guide 11-8 away from the first wire guide 11-7 is facing the inlet end of the first looping groove. When the looping knife 11-6 is at the upper pole, the end of the wire guide hole on the second wire guide 11-8 away from the first wire guide 11-7 is lower than the inlet end of the first looping groove. When the cutting cam 11-3 pushes the circular mounting block to move away from the rotation axis of the cutting cam 11-3, the cutting rocker arm 11-4 will push the tool mounting block 11-5 to slide upward, so that the entrance of the circular knife 11-6 is Cut the wire.

As shown in FIGS. 1 , 10 and 13 , the looping and cutting drive assembly 14 includes a first drive shaft, a second drive shaft, a third drive shaft, a wire feeding motor 14 - 4 , a cutting motor 14 - 5 , and a first pulley 14 -6, the second pulley 14-7, the third pulley 14-8, the fourth pulley 14-3, the first gear 14-1 and the second gear 14-2. The first transmission shaft, the second transmission shaft and the third transmission shaft are all supported in the ring frame 13 . The wire feeding motor 14 - 4 and the cutting motor 14 - 5 are both fixed in the ring frame 13 . One end of the first transmission shaft is fixed with the first gear 14-1, and the other end is fixed with the first roller 11-1. One end of the second transmission shaft is fixed with the second gear 14-2 and the second pulley 14-7, and the other end is fixed with the second roller 11-2. The second gear 14-2 meshes with the first gear 14-1. One end of the third transmission shaft is fixed to the fourth pulley 14-3, and the other end is fixed to the cam. The output shaft of the wire feed motor 14-4 is fixed to the first pulley 14-6. The first pulley 14-6 and the second pulley 14-7 are connected by a first transmission belt. The output shaft of the cut-off motor 14-5 is fixed to the third pulley 14-8. The third pulley 14-8 and the fourth pulley 14-3 are connected by a second transmission belt.

The crystal bead fixtures 7-5 at the first threading station and the second threading station both hold a double-hole crystal octagonal bead, and the two threading holes of the double-hole crystal octagonal bead are respectively located in the corresponding crystal bead fixture 7. In the state on both sides of -5, there is a characteristic circle that simultaneously passes through the first threading station and the threading hole where the double-hole crystal octagonal beads are adjacent to each other on the crystal bead fixture 7-5 at the second threading station. The diameter of the characteristic circle is equal to the diameter of the characteristic helix, and the center of the circle is on the central axis of the characteristic helix. The feature circle intersects the first loop slot or the second loop slot. Therefore, the wire loop processed by the looping knife 11-6 will directly pass through the wire-threading holes on the two double-hole crystal octagonal beads, thereby connecting the two double-hole crystal octagonal beads.

As shown in Figures 1 and 14, the wire feeding mechanism includes a wire feeding motor 15-1, a wire feeding disc 15-2, a wire feeding bracket 15-3, a wire rod 15-4, an outer guide post 15-5, and an outer guide sleeve 15-6, guide screw 15-7, wire outlet assembly 15-8 and detection assembly. The wire feeding bracket 15 - 3 is fixed to the base plate 1 . The wire feed reel 15-2 is supported on the wire feed bracket 15-3. The wire feeding motor 15-1 is fixed on the wire feeding bracket 15-3. The output shaft of the wire discharging motor 15-1 is coaxially installed with the wire feeding disc 15-2. There are four adjusting grooves arranged along the radial direction of the wire feeding tray on the wire feeding tray. face fixed. The bottom ends of the four outer guide posts 15-5 evenly distributed along the circumference of the wire feeding tray 15-2 are respectively fixed in the four adjusting grooves of the wire feeding bracket 15-3. The four outer guide sleeves 15-6 and the four outer guide posts 15-5 constitute sliding pairs respectively, and are respectively fixed by set screws. The bottom ends of the four outer guide sleeves 15-6 and the four guide screw rods 15-7 are respectively fixed. The top ends of the four thread guide rods 15-7 are all provided with a first thread guide ring. The first wire loops of the four wire guide rods 15-7 are successively increased in height along the circumferential direction of the wire feeding disc 15-2. The wire exit assembly 15-8 is located between the uppermost guide screw 15-7 and the lowermost guide screw 15-7. The wire outlet assembly 15-8 includes a wire outlet casing, a rocker lever and a wire outlet spring. The wire outlet shell is fixed with the wire feeding bracket 15-3. The inner end of the rocker is hinged with the wire casing. Both ends of the wire spring are respectively fixed with the wire feed bracket 15-3 and the rocker. The outer end of the rocker is provided with a second wire loop.

The detection component includes a wireless detection piece and a wire lag detection piece. The wireless detection part consists of four annular Hall sensors. The detection ports of the four annular Hall sensors are coaxially fixed with the first guide wire loops on the four guide wire rods. The iron wire passes through the detection port of the ring-shaped hall sensor. When there is no wire or the wire is broken, the ring-shaped hall sensor can output a signal. The wire lag detection piece includes a detection metal block and two lag Hall sensors; the detection metal block is fixed on the rocker; the two lag Hall sensors are fixed in the wire outlet shell; the detection metal block and The distances from the two hysteresis Hall sensors to the joystick and the hinge shaft of the wire casing are equal. The connection lines of the two hysteresis Hall sensors to the rocker and the hinge shaft of the wire casing form an angle of 120°. When the outer end of the rocker is not stressed, the detection metal block is close to one of the hysteresis Hall sensors. Another hysteresis Hall sensor is located on the side of the rocker near the straightening assembly. When the wire lag is delayed, the rocker is forced to rotate, which drives the detection metal block to deflect from one lag Hall sensor to the output signal of another lag Hall sensor; when the wire is no longer delayed, the rocker is reset under the action of the spring, Deflecting the metal block would be at the original hysteresis Hall sensor.

The fully automatic bead stringing method includes a pre-preparation method, a material feeding method, a material moving method and a wire threading method.

The pre-preparation method is as follows:

Load multiple double-hole crystal octagonal beads into the vibrating plate 2-1. Pass the machined end of the iron wire through the first wire ring on the four guide rods 15-7, the second wire ring on the rocker, and the U-shaped bearing 12 on the first adjustment slider in the two straightening assemblies 12 -3 and the second adjusting slider U-shaped bearing 12-3, and pass through the wire guide holes on the first wire guide frame 11-7 and the second wire guide frame 11-8, and are passed by the first roller and After the second roller is pressed, it abuts against the inlet end of the first ring groove on the ring cutter 11-6.

The feeding method is as follows:

Step 1. Start the vibrating plate 2-1 and the direct vibrator. Driven by the vibrating plate 2-1, the double-hole crystal octagonal beads enter the conveying rail 2-2 and the discharging block 2-3 one by one. The double-hole crystal octagonal bead located farthest from the vibrating plate reaches between the upper clamping tube 3-9 and the lower clamping tube 3-10,

Step 2: The sliding table cylinder 3-6 is activated, so that the upper clamping pipe 3-9 and the lower clamping pipe 3-10 slide toward each other and clamp the double-hole crystal octagonal beads.

Step 3: The material-moving motor rotates forward, so that the material-moving plate 3-5 slides toward the material-moving mechanical arm 4 . The clamped double-hole crystal octagonal beads push the two stoppers 2-5 to rotate on the moving plate. The clamped double-hole crystal octagonal beads leave the discharge chute.

During the sliding process of the moving plate 3-5, if the receiver of the fiber laser beam sensor 3-11 cannot detect the light emitted by the transmitter, the rotary motor 3-2 rotates until the fiber laser beam sensor 3-11 The receiver detects the light emitted by the transmitter. At this time, the double-hole crystal octagonal beads between the upper clamping pipe 3-9 and the lower clamping pipe 3-10 reach the preset spatial posture.

Step 4. After the end limit sensor 3-13 detects the contact piece on the moving plate 3-5, the moving motor stops. If the pneumatic gripper 4-8 is not in the initial position, the upper gripper 3-9 and the lower gripper 3-10 remain stationary, waiting for the pneumatic gripper 4-8 to reach the initial position. If the pneumatic gripper 4-8 is at the initial position, the moving motor rotates so that the double-hole crystal octagonal ball between the upper gripper 3-9 and the lower gripper 3-10 reaches the gripping range of the pneumatic gripper 4-8 Inside, the pneumatic clamping jaws 4-8 clamp the two opposite sides of the double-hole crystal octagonal bead. The sliding table cylinder 3-6 drives the upper clamping tube 3-9 and the lower clamping tube 3-10 to slide opposite to each other, releasing the double-hole crystal octagonal beads. Go to step five.

Step 5: The material-moving motor is reversed, so that the material-moving plate 3-5 is reset, and steps 2, 3 and 4 are repeated.

The transfer method is as follows:

Step 1. If the double-hole crystal octagonal beads are clamped on the pneumatic clamping jaws 4-8, the transfer motor 4-7 rotates forward, so that the double-hole crystal octagonal beads on the pneumatic clamping jaws 4-8 reach the feeding station above the crystal bead fixture 7-5.

Step 2. If the crystal bead clamps 7-5 at the feeding station are clamped with double-hole crystal octagonal beads, the pneumatic clamping jaws 4-8 remain stationary, waiting for the crystal bead clamp 7 that does not hold the double-hole crystal octagonal beads. -5 Enter the loading station.

If the crystal bead clamp 7-5 at the feeding station does not hold the double-hole crystal octagonal bead, the first cylinder 9-1 of the crystal bead clamp 7-5 at the feeding station is retracted, so that the The crystal bead clamp 7-5 and the inner movable clamp block 7-5-3 slide in the direction away from the fixed clamp block.

Step 3. The lifting motor 4-1 rotates forward, so that the square shaft 4-4 slides down, and the double-hole crystal octagonal beads on the pneumatic gripper 4-8 reach the moving clamp in the crystal bead fixture 7-5 at the feeding station Between block 7-5-3 and the fixed clamping block.

Step 4. The first cylinder 9-1 is pushed out, so that the crystal bead clamp 7-5 at the feeding station and the inner movable clamp block 7-5-3 and the fixed clamp block clamp the double-hole crystal octagonal beads.

Step 5. Pneumatic gripper 4-8 loosens the double-hole crystal octagonal bead, and lift motor 4-1 is reversed, so that square shaft 4-4 slides up and resets. Go to step six.

Step 6: The transfer motor 4-7 is reversed, the pneumatic gripper 4-8 is reset, and steps 1, 2, 3, 4 and 5 are repeated.

The threading method is as follows:

Step 1. If the crystal bead clamps 7-5 at the feeding station do not hold the double-hole crystal octagonal beads, wait for the pneumatic clamping jaws 4-8 to load the double-hole crystal octagonal beads into the crystal bead clamps at the feeding station. 7-5.

If the crystal bead clamp 7-5 at the feeding station is clamped with double-hole crystal octagonal beads, the station conversion motor 8-1 rotates, so that the crystal bead clamp 7-5 at the feeding station reaches the first thread wire station. Then go to step two.

Step 2. If there is a crystal bead fixture 7-5 on the first threading station and crystal bead fixture 7-5 on the second threading station that does not hold a double-hole crystal octagonal bead, perform step 1 again. .

If the crystal bead clamps 7-5 on the first threading station and the second threading station both hold the double-hole crystal octagonal bead, go to step three.

Step 3: The wire feeding motor 14-4 and the wire discharging motor 15-1 rotate, and the first roller 11-1 and the second roller 11-2 drive the processing end of the wire to slide on the inlet end of the first looping groove. After the iron wire is bent in the first looping groove, it slides out from the outlet end of the first looping groove and passes through the double-hole crystal octagonal beads on the first wire-threading station and the second wire-threading station. After the wire is looped, it is slid into the inlet end of the second looping groove.

Step 4. After the processing end of the iron wire reaches the outlet end of the second looping groove, the wire feeding motor 14-4 and the wire discharging motor 15-1 stop rotating, and the cutting motor 14-5 rotates, so that the looping knife slides upward, and the iron wire is removed. Cut from the inlet end of the first loop groove. The cut of the wire becomes the new processing end.

Step 5. If the crystal bead clamps 7-5 at the feeding station do not hold the double-hole crystal octagonal beads, wait for the pneumatic clamping jaws 4-8 to load the double-hole crystal octagonal beads into the crystal bead clamps at the feeding station. 7-5.

If the crystal bead clamp 7-5 at the feeding station is clamped with double-hole crystal octagonal beads, the station conversion motor 8-1 rotates, so that the crystal bead clamp 7-5 at the second threading station reaches the bottom. material station.

Step 6. The second cylinder is retracted, so that the crystal bead clamp 7-5 at the blanking station slides the inner moving clamp block 7-5-3 away from the fixed clamp block, and the crystal bead clamp 7 at the blanking station slides -5 The double-hole crystal octagonal beads held by it fell down. Go to step seven.

Step 7. The second cylinder is pushed out, so that the movable clamp block 7-5-3 in the crystal bead clamp 7-5 at the blanking station is reset. Repeat steps two, three, four, five and six.

Claims (6)

1. A fully automatic crystal bead concatenation method, it is characterized in that: the bead stringing device adopted comprises a base plate, a vibrating disc discharging mechanism, a rotating material-moving mechanism, a material-moving mechanical arm, a four-station clamping mechanism, A coil mechanism and a wire feeding mechanism; the vibrating disc discharging mechanism includes a vibrating disc, a straight vibrator, a conveying rail, a discharging block, a blocking block and a blocking spring; the vibrating disc is fixed on the bottom plate; The conveying rail is fixed with the vibrating plate; the top surface of the conveying rail is provided with a conveying chute; the bottom surface of the conveying rail is fixed with the straight vibrator; the inlet end of the conveying chute is communicated with the discharge port of the vibrating plate; The inlet end of the block is fixed with the outlet end of the conveying chute; the top surface of the discharging block is provided with a discharging chute; the outlet end of the bottom surface of the discharging chute is provided with a passing slot; the passing slot and the outlet end of the discharging block are provided The end faces are connected; the two blocking blocks are centered at the outlet end of the discharging block; the distance between the two blocking blocks is smaller than the groove width of the discharging chute; one end of the two blocking springs and one end of the two blocking blocks are respectively Fixed, the other end is fixed with the discharge block; The rotating material-moving mechanism includes a material-moving frame, a material-moving motor, a synchronous belt, a synchronous pulley, a tension block, a tension shaft, a material-moving plate, a sliding table cylinder, an upper support seat, a lower support seat, and an upper clamping tube. , lower clamping tube, fiber laser beam sensor and rotary motor; the moving frame is fixed on the bottom plate; the tensioning block and the moving frame form a sliding pair and are fixed by set screws; The tensioning shaft is fixed on the tensioning block; the moving motor is fixed on the moving frame, and its output shaft is fixed coaxially with one synchronous pulley; the other synchronous pulley is supported on the tensioning shaft; the two synchronous pulleys pass through The synchronous belt is connected; the material moving plate and the material moving frame form a sliding pair and are fixed with the synchronous belt; the sliding table cylinder is fixed with the material moving plate; the upper support seat, the lower support seat and the sliding table cylinder are two The sliders are fixed respectively; the top of the upper clamp and the upper support base form a rotating pair; the rotary motor is fixed with the lower support; the output shaft of the rotary motor is fixed with the bottom end of the lower clamp; the upper clamp and the lower clamp The tube is coaxially arranged; the transmitter and receiver of the fiber laser beam sensor are respectively fixed on the upper support seat and the lower support seat; The material-moving mechanical arm includes a lift motor, a lift wheel, a lift stop wheel, a square shaft, a sliding seat, a lifting seat, a connecting plate, a transfer motor and a pneumatic gripper; the sliding seat and the lifting motor pass through the connecting plate. fixed on the moving rack; the output shaft of the lifting motor is horizontally arranged and fixed eccentrically with the lifting wheel; the square shaft and the sliding seat form a sliding pair; two lifting gear wheels are fixed on the square shaft; There is a lifting and moving plate on it; the lifting wheel is located between the lifting and moving plates in the two lifting and lowering wheel discs; the diameter of the lifting wheel is equal to the distance between the two lifting and moving plates; the lifting seat is fixed with the bottom end of the square shaft; the transfer motor is fixed On the lift seat; the output shaft of the transfer motor is set vertically and fixed with the pneumatic gripper; The four-station clamping mechanism includes a rotating shaft assembly, a station conversion drive assembly, a ball-clamping drive assembly and a clamping frame; the clamping frame is fixed with the looping frame in the wire winding and looping mechanism; the The rotating shaft assembly includes a central rotating shaft, a rotating drum, an inner mounting column, an outer mounting plate and a crystal bead clamp; the inner end of the central rotating shaft is supported on the clamping frame, the middle part is fixed with the inner mounting column, and the outer end is fixed with the outer mounting plate; The end face of the column is provided with four first installation grooves that are evenly distributed along the axis of the inner installation column; the drum is sleeved on the outer side of the inner installation column and is fixed with the inner installation column; the outer end face of the outer installation plate is provided with Four second installation grooves evenly distributed along the circumference of the outer mounting plate axis; the cross-section of the second installation groove is exactly the same as the cross-section of the first installation groove; the four first installation grooves correspond to the four second installation grooves respectively; The crystal bead clamp includes a sliding rail, a fixed clamping block, a movable clamping block, a ball clamping spring and a locking pin; the inner end of the working side of the sliding rail is provided with a limiting protrusion, and the outer end is fixed with the fixed clamping block; The clamping block and the middle part of the working side of the slide rail form a sliding pair; the two ends of the ball clamping spring are respectively fixed with the limit protrusion and the opposite end face of the movable clamping block; the inner end of the detent pin is fixed with the movable clamping block; The first installation slot is a through slot, and the cross section is square; the side of the outer installation plate is provided with four installation holes uniformly distributed along the circumference of its own axis; the bottom ends of the four installation holes are connected with the four first installation holes. The installation grooves are respectively connected; the side surfaces of the inner installation column are provided with four bayonet chutes that are evenly distributed along the circumference of its own axis; the bottom ends of the four bayonet chutes are communicated with the four second installation grooves respectively; There are four limit chutes evenly distributed along the circumference of its own axis on the side surface; the four limit chutes and the four bayonet chutes correspond to the circumferential positions of the drum respectively; the outer side of the movable clamping block is provided with There is a rod hole; the outer side of the fixed clamping block is provided with a threaded hole; There are four crystal bead clamps in total; the four crystal bead clamps are respectively fixed in the four first installation grooves and the second installation groove; the working sides of the slide rails in the four crystal bead clamps face the direction away from the axis of the central shaft; four The end bolts respectively pass through the four mounting holes on the outer mounting plate, and are respectively threaded with the threaded holes of the inner fixed clamping block of the four crystal bead clamps; the inner ends of the detent pins of the four crystal bead clamps respectively pass through the four clamping The pin chute extends into the corresponding insertion rod hole; the outer ends of the detent pins of the four crystal bead clamps protrude out of the four limit chute respectively; the middle of the detent pins is provided with annular protrusions; The bulge is located between the rotating drum and the inner installation column; the two side edges of the opposite end faces of the movable clamp block and the fixed clamp block are provided with lock ball blocks; the two ball lock blocks on the movable clamp block are far from the movable clamp block. Locking bead grooves are provided on the mutually adjacent edges on the side surface; lock bead grooves are provided on the mutually adjacent edges of the two locking bead blocks on the fixed clamping block on the side surface away from the fixed clamping block; The station conversion drive assembly includes a station conversion motor, an encoder disk and a station detection sensor; the station detection sensor adopts a photoelectric sensor; the station conversion motor is fixed with the clamping frame; the station conversion motor One of the output shafts is fixed with the inner end of the central rotating shaft; the other output shaft of the station conversion motor is fixed with the encoder disk; the encoder disk is provided with four detection holes uniformly distributed along the circumference of its axis; The station detection sensor is fixed with the clamping frame; the detection head of the station detection sensor is arranged towards the encoder disk, and the distance to the axis of the encoder disk is equal to the distance from the axis of the detection hole to the axis of the encoder disk; The ball clamping drive assembly includes a first air cylinder, a second air cylinder, a first dial plate and a second dial plate; the first air cylinder and the second air cylinder are both fixed with the clamping frame; the first air cylinder and the second air cylinder are The push-out lever is fixed with the first dial plate and the second dial plate respectively; the first dial plate is located just above the rotating shaft assembly; the second dial plate is located on one side of the rotating shaft assembly; the first dial plate and the second dial plate are connected to the central rotating shaft The distance of the axis is less than the distance from the outer end face of the detent pin to the axis of the central shaft; The four crystal bead fixtures correspond to four stations; the four stations are the feeding station, the first threading station, the second threading station, and the unloading station, which are arranged in a ring shape along the circumference of the central axis. position; the working side of the slide rail in the crystal bead fixture at the feeding station faces directly upward; The wire winding and looping mechanism includes a loop cutting assembly, a straightening assembly, a looping frame and a looping cutting drive assembly; the looping frame is fixed on the bottom plate; the straightening assembly includes an adjustment bolt, an adjustment Slider, U-shaped bearing and straightening frame; the straightening frame is provided with n adjustment sliders arranged in sequence along the length of the straightening frame, 3≤n≤20; all adjustment sliders are connected with the straightening frame It is a sliding pair that slides along the width direction of the straightening frame; there are n adjusting bolt groups on the straightening frame; the adjusting bolt group consists of two adjusting bolts; the n adjusting bolt groups correspond to the n adjusting sliders one by one; the same The two adjusting bolts in the adjusting bolt group are located on the two sides of the straightening frame respectively, and are respectively against both ends of the corresponding adjusting sliders; U-shaped bearings are supported on the n adjusting sliders; The length direction of the straightening frame is sorted in order; the adjustment slider with an odd number is the first adjustment slider; the adjustment slider with an even number is the second adjustment slider; all the U-shaped bearings on the first adjustment slider are rolling straight The width direction of the frame is aligned; the U-shaped bearings on all the second adjustment sliders are aligned in the width direction of the straightening frame; the U-shaped bearings on the first adjustment slider and the U-shaped bearings on the second adjustment slider are in the straightening The width direction of the rack is staggered; There are two rolling and straightening components; the axes of the U-shaped bearings in the two rolling and straightening components are perpendicular to each other; the rolling target lines of the two rolling and straightening components are coincident; the rolling target line of the rolling and straightening components is the horizontal rolling target surface The intersection line with the longitudinal rolling target surface; the lateral rolling target surface is the symmetrical plane of the two ends of the U-shaped bearing; the longitudinal rolling target surface is the plane with the same distance to the axis of all U-shaped bearings; The circle cutting assembly includes an adjusting bolt, a compression spring, an adjusting block, a first roller, a second roller, a cutting cam, a cutting rocker arm, a cutter mounting block, a circle cutter, a return spring, and a first guide wire. The second roller is supported on the ring frame; the adjusting block and the ring frame form a sliding pair; the adjusting bolt is threadedly connected to the ring frame; both ends of the compression spring are connected to the adjustment block , the adjusting bolts are fixed respectively; the first roller is supported on the adjusting block; the first roller is located just above the second roller; the first wire guide and the second wire guide are fixed on the ring frame, and are opposite The ends are respectively close to the gap between the first roller and the second roller; the first thread guide and the second thread guide are provided with thread guide holes; the first thread guide and the second thread guide are provided with thread guide holes The axes of the two rollers are coincident with the rolling target lines of the two straightening components; The cutter mounting block and the ring frame form a sliding pair; the two ends of the return spring are respectively fixed with the cutter mounting block and the ring frame; the ring cutter is fixed on the top of the cutter installation block; A looping groove and a second looping groove; the first looping groove and the second looping groove are arc-shaped and close together; the centerlines of the first looping groove and the second looping groove are on the same line characteristic spiral; The characteristic helix is a cylindrical helix; the diameter of the wire guide holes on the first and second wire guides, the distance between the first roller and the second roller, and the lead of the characteristic helix are equal; The crystal bead fixtures at the first threading station and the second threading station are all clamped with double-hole crystal octagonal beads, and the two threading holes of the double-hole crystal octagonal beads are respectively located on both sides of the corresponding crystal bead fixture. In the state of , there is a characteristic circle that simultaneously passes through the first threading station and the threading hole where the double-hole crystal octagonal beads on the crystal bead fixture are adjacent to each other at the first threading station and the second threading station; the diameter of the characteristic circle is equal to the characteristic spiral The diameter of , and the center of the circle is on the central axis of the characteristic helix; the characteristic circle intersects with the first looping groove or the second looping groove; The cutting cam is supported on the ring frame; the middle part of the cutting rocker arm and the ring frame form a rotating pair; one end of the cutting rocker arm is fixed with a circular mounting block, and the other end is pressed against the bottom of the cutter mounting block; The shaped mounting block is in contact with the side surface of the cutting cam; the circular cutting driving assembly includes a circular driving part and a cutting driving part; the first roller and the second roller are driven by the circular driving part; the cutting cam is driven by the cutting Parts drive; the fully automatic beading method includes pre-preparation method, feeding method, material moving method and wire threading method; The wire feeding mechanism includes a wire feeding motor, a wire feeding tray, a wire feeding bracket, a wire rod, an outer guide post, an outer guide sleeve, a wire guide rod, a wire feeding assembly and a detection assembly; the wire feeding tray is supported on the the wire feeding support; the wire feeding motor is fixed on the wire feeding support; the output shaft of the wire feeding motor is installed coaxially with the wire feeding reel; the wire feeding reel is provided with four adjusting grooves arranged along the radial direction of the wire feeding reel, The bottom ends of the four screw rods evenly distributed along the circumference of the wire feeding reel are respectively fixed in the four adjusting grooves of the wire feeding reel; Fixing; four outer guide sleeves and four outer guide posts constitute sliding pairs respectively, and they are respectively fixed by set screws; four outer guide sleeves and the bottom ends of four guide screw rods are respectively fixed; the top ends of four guide screw rods Both are provided with a first wire guide; The wire outlet assembly is located between two adjacent guide screw rods; the wire outlet assembly includes a wire outlet casing, a rocker and a wire outlet spring; the wire outlet casing is fixed with the wire feeding bracket; the inner end of the rocker is hinged with the wire outlet casing ; Both ends of the wire spring are respectively fixed with the wire feed bracket and the rocker; the outer end of the rocker is provided with a second wire guide; The detection assembly includes a wire-free detection part and a wire-out delay detection part; the wire-free detection part includes four annular Hall sensors; The wire guide ring is coaxially fixed; the wire lag detection part includes a detection metal block and two lag Hall sensors; the detection metal block is fixed on the rocker; the two lag Hall sensors are fixed on the wire Inside the shell; the distance between the detection metal block and the two hysteresis Hall sensors to the rocker and the hinge shaft of the wire casing is equal; the connection between the two lag Hall sensors and the rocker and the hinge shaft of the wire casing forms an angle of 120°; When the outer end of the rocker is not stressed, the detection metal block is close to one of the hysteresis Hall sensors; the other hysteresis Hall sensor is located on the side of the rocker close to the straightening assembly; The pre-preparation method is as follows: Put the double-hole crystal octagonal beads into the vibrating plate; pass the machined end of the iron wire between the U-shaped bearing on the first adjustment slider and the U-shaped bearing of the second adjustment slider in the two straightening components, and pass through the first adjustment slider. After the wire guide frame and the wire guide hole on the second wire guide frame, touch the entrance end of the first looping groove on the looping knife; The feeding method is as follows: Step 1. The vibrating plate and the straight vibrator are started; the double-hole crystal octagonal beads are driven by the vibrating plate and enter the conveying rail and the discharge block one by one; the double-hole crystal octagonal beads located farthest from the vibrating plate reach the Between the pinch tube and the lower pinch tube, Step 2, the cylinder of the sliding table is activated, so that the upper clamping pipe and the lower clamping pipe slide toward each other, and the double-hole crystal octagonal beads are clamped; Step 3. The moving motor rotates forward, so that the moving plate slides toward the moving mechanical arm; the clamped double-hole crystal octagonal beads leave the discharge chute; During the sliding process of the moving plate, if the receiver of the fiber laser beam sensor cannot detect the light emitted by the transmitter, the rotation motor rotates until the receiver of the fiber laser beam sensor detects the light emitted by the transmitter; Step 4. After the moving plate reaches the rotation track of the pneumatic gripper, the moving motor stops; if the pneumatic gripper is not at the initial position, the upper and lower gripping pipes remain stationary and wait for the pneumatic gripper to reach the initial position; When the pneumatic gripper is at the initial position, the pneumatic gripper clamps the two opposite sides of the double-hole crystal octagonal bead; the sliding table cylinder drives the upper and lower clamping pipes to slide against each other to loosen the double-hole crystal octagonal bead; go to step 5 ; Step 5. The material-moving motor is reversed, so that the material-moving plate is reset, and steps 2, 3 and 4 are repeated; The transfer method is as follows: Step 1. If the double-hole crystal octagonal bead is clamped on the pneumatic gripper, the transfer motor rotates forward, so that the double-hole crystal octagonal bead on the pneumatic gripper reaches the top of the crystal bead fixture at the feeding station; Step 2. If the crystal bead clamp at the feeding station is clamped with a double-hole crystal octagonal bead, the pneumatic gripper remains stationary, waiting for the crystal bead clamp not holding the double-hole crystal octagonal bead to enter the feeding station; If the crystal bead clamp at the feeding station does not hold the double-hole crystal octagonal bead, the first cylinder of the crystal bead clamp at the feeding station is retracted, so that the inner movable clamping block of the crystal bead clamp at the feeding station moves toward the Slide away from the direction of the fixed clamping block; Step 3: The lifting motor rotates forward, so that the square shaft slides downward, and the double-hole crystal octagonal beads on the pneumatic gripper reach between the movable clamp block and the fixed clamp block in the crystal bead clamp at the feeding station; Step 4. The first cylinder is pushed out, so that the inner movable clamping block and the fixed clamping block of the crystal bead clamp at the feeding station clamp the double-hole crystal octagonal beads; Step 5. The pneumatic gripper loosens the double-hole crystal octagonal bead, and the lifting motor is reversed, so that the square shaft slides up and resets; go to step 6; Step 6: The transfer motor is reversed, the pneumatic gripper is reset, and steps 1, 2, 3, 4 and 5 are repeated; The threading method is as follows: Step 1. If the crystal bead fixture at the feeding station does not hold the double-hole crystal octagonal bead, wait for the pneumatic gripper to load the double-hole crystal octagonal bead into the crystal bead fixture at the feeding station; If the crystal bead fixture at the feeding station is clamped with double-hole crystal octagonal beads, the station conversion motor rotates so that the crystal bead fixture at the feeding station reaches the first threading station; then step 2 is performed; Step 2. If the crystal bead fixture on the second threading station does not hold the double-hole crystal octagonal bead, then perform step 1 again; If the crystal bead fixtures on the first threading station and the second threading station both hold double-hole crystal octagonal beads, go to step 3; Step 3: The wire feeding motor and the wire discharging motor rotate, and the processing end of the first roller and the second roller drive the iron wire to slide on the inlet end of the first looping groove; The outlet end of a looping groove slides out and passes through the threading holes of the double-hole crystal octagonal beads on the first and second wire-threading stations; after the iron wire is wound into a ring, it slides into the second looping groove entry port; Step 4. After the processing end of the iron wire reaches the exit end of the second looping groove, the wire feeding motor and the wire discharging motor stop, and the rotation of the cutting motor is cut off, so that the looping knife slides upward, and the iron wire is removed from the entrance end of the first looping groove. cut off; Step 5. If the crystal bead fixture at the feeding station does not hold the double-hole crystal octagonal bead, wait for the pneumatic gripper to load the double-hole crystal octagonal bead into the crystal bead fixture at the feeding station; If the crystal bead fixture at the feeding station is clamped with double-hole crystal octagonal beads, the station conversion motor rotates, so that the crystal bead fixture at the second threading station reaches the unloading station; Step 6. The second cylinder is retracted, so that the inner movable clamping block of the crystal bead clamp at the blanking station slides in the direction away from the fixed clamping block, and the double-hole crystal octagonal bead held by the crystal bead clamp at the blanking station falls off. fall; go to step seven; Step 7: Push out the second cylinder to reset the movable clamp block in the crystal bead fixture at the blanking station; repeat steps 2, 3, 4, 5 and 6. 2. A fully automatic crystal bead series connection method according to claim 1, characterized in that: the end face of the outlet end of the discharge block is centered with two material retaining spring sheets; The spacing is smaller than the slot width of the discharge chute. 3. A fully automatic crystal bead concatenation method according to claim 1, characterized in that: the rotating material transfer mechanism further comprises a contact piece, a starting point limit sensor and an end point limit sensor; The position sensor and the end limit sensor are all photoelectric sensors, and they are fixed on the moving frame; the top of the moving plate is fixed with one end of the contact piece; The distance between the laser emitting head of the transmitter of the optical fiber laser beam sensor and the axis of the upper clamping tube is equal to the distance from the axis of the threading hole on the double-hole crystal octagonal bead to the central axis of the double-hole crystal octagonal bead. 4. A fully automatic crystal bead concatenation method according to claim 1, characterized in that: when the upper clamp pipe and the lower clamp pipe are located at the extreme position of the end point, the connection between the upper clamp pipe and the lower clamp pipe is The double-hole crystal octagonal bead is located on the rotation track of the upper jaw body of the pneumatic gripper; the crystal bead fixture at the feeding station is located on the rotation track of the upper jaw body of the pneumatic gripper. 5 . The fully automatic crystal bead stringing method according to claim 1 , wherein the first dial and the second dial are both located on the side of the four detent pins close to the outer mounting plate. 6 . 6. A fully automatic crystal bead concatenation method according to claim 1, characterized in that: in the state where the looping knife is located at the lower pole, the wire hole on the second wire guide is far away from the part of the first wire guide. The end is facing the inlet end of the first looping groove; when the looping knife is at the upper pole, the end of the wire guide hole on the second wire guide that is far away from the first wire guide is lower than the inlet end of the first looping groove.

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