CN217570690U - Four-in-one self-drilling screw machine - Google Patents

Abstract

The utility model discloses a four unification bores tail screw machine, including a marching type conveying mechanism, at least one double-layered tail mechanism, at least one multistation mould mechanism of taking lead and a thread rolling mechanism that are used for the section wire rod of wire rod to carry, the last transport station that contains a plurality of parallel of conveying mechanism, the conveying mechanism front end still is equipped with blanking complex aligning shutdown mechanism with it, and double-layered tail mechanism and multistation mould mechanism of taking lead set up respectively in two sides of conveying mechanism and correspond different transport station separately, thread rolling mechanism sets up the afterbody at conveying mechanism. The four-in-one self-drilling screw machine has ingenious structure, modularizes and combines four processes on a platform by using a stepping conveying mechanism, occupies small area, saves electricity and oil by at least 30 percent, and reduces carbon emission; the labor of three technicians is saved, the production speed is high, and the infinite screw can be formed due to the ingenious fixing mode during heading.

Description

Four-in-one self-drilling screw machine

Technical Field

The utility model belongs to the mechanical equipment field especially relates to a four unification bores tail screw machines.

Background

The self-drilling screw is used as a common locking piece and is widely applied. In the prior art, the conventional process for manufacturing the ultra-long self-drilling screw is as follows: 1. straightening and cutting off the wire rod of the wire rod to a required length and transferring the wire rod to a next station; 2. putting the plate into an alignment disc, aligning the plate into a clamp, entering a die spotting machine, performing head forming (preforming and forming) for two times, and transferring the plate to a next station; 3. putting the drill tail into an arranging disc, arranging a drill tail clamping forming machine into a whole by the arranging disc to clamp the shape of the drill tail, and transferring the drill tail to the next station; 4. putting the drill tail screw into an alignment disc, and aligning one drill tail screw by one screw thread rolling forming machine.

The disadvantages are that: 1. there must be four separate stations: A. the straightening and cutting machine, the one-die two-punch head machine, the drill tail clamping and forming machine and the thread forming machine occupy a large area of four devices, and waste the cost of the field; 2. the shape of one screw head can be finished only by rotating the flywheel for two cycles by using the die two-punch head machine, and the production speed is low; when the heading forming is carried out, the lead screw body is clamped after being fully inserted into the mold, then heading is carried out, but the damage of equipment such as a clamp or the mold and the like is easily caused by incomplete insertion of the lead screw body due to the problems of insufficient straightness such as bending and the like because the lead screw body is long; 3. the energy consumption of the motors of the four devices is partially overlapped with that of the cooling lubricating oil, so that the electric power and the oil energy are wasted, and the carbon emission is increased; 4. the operators of four devices must operate one professional technician for each machine, for a total of four people.

That is, the existing production straightening, tail clamping, heading and thread rolling of the self-drilling screw are performed on different machines, which wastes energy, has low yield, wastes time and labor, and when a workpiece moves among the machines, the workpiece is repositioned to each station, and the mutual connection among the stations is easy to be unstable, so that the error on the same workpiece is large, the quality of the finished product is influenced, and the rod body of the self-drilling screw is long, and the rod body is easy to be inserted incompletely due to insufficient straightness, so that the damage of equipment such as a clamp or a die is caused. Therefore, it is desirable to find a production method with higher production efficiency, better safety and higher yield.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a four-in-one self-drilling screw machine with high production speed, high equipment safety and energy conservation is provided.

The utility model discloses a realize through following technical scheme:

four unification bores tail screw machine for with the pan yuan wire rod processing become the head for screw head, afterbody for boring tail, middle screwed bore tail screw, including a marching type be used for the pan yuan wire rod of segmentation to carry conveying mechanism, at least one clamp tail mechanism, at least one multistation mould mechanism of taking lead and a thread rolling mechanism, the conveying mechanism is last to contain the parallel transport station of a plurality of, the conveying mechanism front end still is equipped with blanking complex aligning shutdown mechanism with it for with the pan yuan wire rod alignment and cut off according to the required length of drill tail screw blank, then fall into on conveying mechanism, clamp tail mechanism and multistation mould mechanism of taking lead set up respectively in two sides of conveying mechanism and respectively correspond different transport stations and carry out clamp tail shaping or make the head shaping with the blank that can be simultaneously on different transport stations, thread rolling mechanism sets up the afterbody in order to carrying out the thread rolling shaping to the blank that falls into thread rolling mechanism from the conveying mechanism afterbody.

Preferably, the conveying mechanism is a chain wheel stepping type clamping and conveying mechanism or a spiral forward stepping type conveying mechanism consisting of two parallel screw conveying guide rods. Preferably, the spiral forward stepping type conveying mechanism comprises a base and two identical screw conveying guide rods parallelly erected on the base at a certain distance, the two screw conveying guide rods are driven by one or two motors to synchronously rotate, and thread pitch grooves of the screw conveying guide rods are matched with the diameter of the wire rod so as to drive the wire rod to move forwards in a stepping mode during rotation. Furthermore, when the conveying mechanism is a spiral forward stepping conveying mechanism with a screw conveying guide rod, the tail clamping mechanism is arranged on one side edge of the conveying mechanism with the same rotation direction of the screw conveying guide rod, the tail clamping mechanism is avoided on the side edge, the adjustable material blocking structure is arranged and used for positioning the blank and preventing the blank from deviating outwards, the adjustable material blocking structure comprises an adjusting screw and a stop block arranged at the front end of the adjusting screw, the adjusting screw penetrates through a fixing plate, and the fixing plate is fixedly arranged on the straightening cutting mechanism or the thread rolling mechanism.

Preferably, the tail clamping mechanism comprises an upper die and a lower die for drilling tail forming and a driving device for driving the upper die and the lower die to move together. Preferably, the four-in-one self-drilling screw machine comprises a tail clamping mechanism. Preferably, a plurality of material clamping positions corresponding to the end parts of different conveying stations are arranged between the upper die and the lower die in parallel so as to clamp the end parts of a plurality of blanks simultaneously for drilling tail forming.

Preferably, the driving device comprises a first motor and a first rotating shaft driven by the first motor, the first rotating shaft is erected on a base, a clamping tail die assembly power cam with two ends protruding outwards is fixedly sleeved on the first rotating shaft, clamping tail die assembly adjusting screws with springs are respectively connected to the upper portion of an upper die and the lower portion of a lower die for drilling tail forming, the other end of each clamping tail die assembly adjusting screw is respectively connected with a clamping tail die assembly rocker arm, the two clamping tail die assembly rocker arms are connected to the base in a pin shaft mode of up and down, a first jacking wheel is respectively arranged at the other end of each clamping tail die assembly rocker arm, the two first jacking wheels on the two clamping tail die assembly rocker arms are respectively matched with the clamping tail die assembly power cam in a mode of up and down, the two first jacking wheels are jacked up or put down when the clamping tail die assembly power cam rotates, the two clamping tail die assembly rocker arms are driven to rotate in opposite directions, and the two clamping tail die assembly adjusting screws with springs are driven to drive the upper die and the lower die and simultaneously clamp blanks downwards or upwards to clamp blanks to form drilling tail blanks.

Preferably, the multi-station die heading mechanism comprises a heading slider capable of moving left and right and a group of heading dies which are arranged on the heading slider side by side and contain different inner dies and are used for sequentially matching one end of a blank to be finally formed into a required screw head structure, one heading die corresponds to one conveying station on one conveying mechanism, the conveying stations corresponding to the group of heading dies are adjacent conveying stations, the end position of the conveying station adjacent to each side of which the heading die is arranged is provided with a blank end clamping die containing material clamping positions corresponding to the number of the group of heading dies, and the blank end clamping die is used for clamping the corresponding blank end before heading and exposing the required volume of the screw head structure to facilitate heading forming.

Preferably, the thread rolling mechanism comprises a thread rolling machine base and a thread rolling fixed plate fixedly arranged on the thread rolling machine base, and a thread rolling movable plate is further arranged opposite to the thread rolling fixed plate and fixedly connected with a thread rolling sliding block, and the thread rolling sliding block is matched with a vertical sliding groove arranged on the thread rolling machine base so as to move up and down relative to the vertical sliding groove.

Preferably, the thread rolling slide block of the thread rolling mechanism, the heading slide block of the multi-station die heading mechanism and the blank end clamping die are driven by the same power device;

the power device comprises a second motor and a second rotating shaft driven by the second motor, the second rotating shaft is erected on a rack, a horizontal chute matched with a heading slider is further arranged on the rack, an eccentric crankshaft is arranged in the middle of the second rotating shaft, an impact connecting rod is sleeved on the eccentric crankshaft in a sliding mode, the other end of the impact connecting rod is connected with the heading slider, the impact connecting rod is driven to move when the eccentric crankshaft rotates, the heading slider is driven to move left and right along the horizontal chute by the impact connecting rod, a heading die on the multi-station die heading mechanism is driven to move back and forth, and the end of a disc element wire is hit in multiple stations and is gradually formed into a screw head structure;

the blank end clamping die comprises a die assembly die, a die assembly clamping adjusting screw with a spring, a die assembly clamping rocker arm and a die assembly die closing cam which are sequentially matched, the die assembly die comprises a fixed upper die and a movable lower die, the blank end clamping die comprises blank end clamping dies with clamping positions corresponding to the number of a group of heading dies, namely the fixed upper die and the movable lower die of the die assembly die are provided with the clamping positions corresponding to the number of the group of heading dies; the fixed upper die is fixed on the rack, the lower part of the movable lower die is connected with the die assembly clamping adjusting screw with the spring, the middle part of the die assembly clamping rocker arm is connected and arranged on the rack through a pin shaft, one end, matched with a die assembly die closing cam, of the die assembly clamping rocker arm is provided with a second top wheel, the second transmission shaft driven by a second motor drives a cam transmission shaft through a gear, the die assembly die closing cam is fixedly sleeved on the cam transmission shaft, and when the second rotation shaft rotates, the die assembly die closing cam is driven to jack the second top wheel so as to drive the die assembly clamping rocker arm to rotate, so that the die assembly clamping adjusting screw with the spring is driven to move up and down, and the die assembly clamping adjusting screw with the spring drives the die to close or release so as to clamp or release a disc element wire;

the tail of the second rotating shaft is fixedly connected with a rotating disc, a thread rolling power crankshaft is eccentrically arranged on the rotating disc, a thread rolling main power output rod is sleeved on the thread rolling power crankshaft in a sliding mode, the other end of the thread rolling main power output rod is sequentially connected with a thread rolling power rocker and a thread rolling driven power input rod, the middle of the thread rolling power rocker is supported through a supporting seat, and the thread rolling is connected with the thread rolling sliding block through a pin shaft by the other end of the power input rod so that the thread rolling can move up and down relative to the vertical sliding groove to achieve thread rolling forming.

Preferably, the straightening cutting mechanism comprises a straightening unit and a shearing unit, the straightening unit and the shearing unit are matched with each other, the shearing unit is located at the front end of the straightening unit and comprises a plurality of groups of rollers for straightening, the shearing unit comprises a material cutting fixed die and a material cutting movable die, and the material cutting movable die is driven by the driving unit to move up and down. More preferably, the driving unit is a cylinder.

Preferably, a wire rod rack for feeding the straightening and cutting mechanism is further provided in front of the straightening and cutting mechanism.

The utility model has the advantages that:

the utility model discloses a four unification bores tail screw machine, the structure is ingenious, and application scope is wider, and the practicality is strong, especially has following advantage:

1. the four processes are concentrated and combined on a platform by a stepping conveying mechanism in a modularized manner, so that the whole process only needs one fourth of the area of the originally required site;

2. the multi-station die heading mechanism enables the processes required by the formation of one screw head structure, such as heading preforming, forming and the like, to be respectively performed by using different groups of dies, and a finished product head shape is forged at the same time, so that the production speed is greatly increased compared with the two-cycle production of one screw by a traditional one-die two-punch infinite-length die spotting machine;

3. the four processes are combined in a modularized way, so that overlapped wasted motor power and oil are eliminated, at least 30% of electricity cost and oil are saved, and carbon emission is reduced;

4. the modularized combination of the four processes saves the labor cost of three technicians.

Drawings

For ease of illustration, the present invention is described in detail by the following specific examples and figures.

Fig. 1 is a schematic top view of an embodiment of the present invention;

fig. 2 is a schematic front view structure diagram of a tail clamping mechanism and a multi-station die heading mechanism driving structure according to an embodiment of the present invention;

fig. 3 is a schematic top view of a driving structure of a multi-station die heading mechanism according to an embodiment of the present invention;

fig. 4 is a schematic top view of the thread rolling mechanism according to the embodiment of the present invention;

fig. 5 is a rear view structural schematic diagram of the embodiment of the present invention, illustrating a driving structural schematic diagram of the thread rolling mechanism;

fig. 6 is a schematic top view of a driving structure including a thread rolling mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a straightening and cutting mechanism and a part of an adjustable material blocking structure.

Detailed Description

As shown in fig. 1-7, a four-in-one self-tapping screw machine for processing a wire rod into a self-tapping screw 90 with a head part being a screw head, a tail part being a self-tapping screw and a middle thread, comprises a step-by-step conveying mechanism 10 for conveying the segmented wire rod, at least one tail clamping mechanism 20, at least one multi-station die heading mechanism 30 and a thread rolling mechanism 40, wherein the conveying mechanism 10 comprises a plurality of parallel conveying stations, the front end of the conveying mechanism 10 is further provided with a straightening and cutting mechanism 50 matched with the blanking for straightening the wire rod and cutting the wire rod according to the required length of the self-tapping screw blank, and then the wire rod falls onto the conveying mechanism 10, the tail clamping mechanism 20 and the multi-station die heading mechanism 30 are respectively arranged on two side surfaces of the conveying mechanism 10 and respectively correspond to different conveying stations so as to simultaneously perform tail clamping or head rolling on blanks 70 on different conveying stations, and the thread rolling mechanism 40 is arranged on the tail part of the conveying mechanism 10 so as to perform thread-tapping and forming on the blanks 70 falling from the tail part of the conveying mechanism 10.

The conveying mechanism 10 is a chain wheel stepping type clamping and conveying mechanism or a spiral forward stepping type conveying mechanism consisting of two parallel screw conveying guide rods. In this embodiment, the conveying mechanism 10 is a spiral forward stepping conveying mechanism composed of two parallel screw conveying guide rods, the spiral forward stepping conveying mechanism includes a base 11 and two identical screw conveying guide rods 12 parallelly erected on the base 11 at a certain distance, the two screw conveying guide rods 12 are synchronously rotated by the driving of one or two motors, and the pitch grooves of the screw conveying guide rods 12 are adapted to the diameter of the wire rod so as to step forward the wire rod when rotating. The tail clamping mechanism 20 is arranged on one side of the conveying mechanism, which is the same in the rotation direction of the screw conveying guide rod, and the tail clamping mechanism 20 is avoided on the side, the adjustable material blocking structure 13 is arranged and used for positioning blanks and preventing the blanks from deflecting outwards, the adjustable material blocking structure 13 comprises an adjusting screw and a stop block arranged at the front end of the adjusting screw, the adjusting screw is arranged on a fixing plate in a penetrating mode, and the fixing plate is fixedly arranged on a straightening cutting mechanism or a thread rolling mechanism.

In this embodiment, the tail clamping mechanism 20 includes an upper die 21 and a lower die 22 for drilling tail formation, and a driving device for driving the upper die and the lower die to move together. Preferably, the four-in-one self-drilling screw machine comprises a tail clamping mechanism. Preferably, a plurality of material clamping positions respectively corresponding to the end parts of different conveying stations are arranged between the upper die 21 and the lower die 22 in parallel so as to clamp the end parts of a plurality of blanks simultaneously for drilling tail forming.

Preferably, the driving device includes a first motor 23 and a first rotating shaft 24 driven by the first motor 23, specifically, two ends of the first rotating shaft 24 are sleeved with flywheels, a power output shaft of the first motor 23 drives one of the flywheels to rotate through a power belt, and further drives the first rotating shaft 24 to rotate, the first rotating shaft 24 is erected on a base 25, the first rotating shaft 24 is fixedly sleeved with a tail clamping and closing power cam 26 with two ends protruding outwards, the upper portion of the upper die 21 and the lower portion of the lower die 22 for tail drilling forming are respectively connected with tail clamping and closing adjusting screws 27 with springs, the other end of the tail clamping and closing adjusting screws 27 is respectively connected with a tail clamping and closing rocker arm 28, the two tail clamping and closing rocker arms 28 are arranged on the base 25 in an up-down pin shaft connection manner, the other end of the tail clamping and closing rocker arm 28 is provided with a first jacking wheel 29, the two first jacking wheels 29 on the two tail clamping and closing rocker arms 28 are respectively connected with the tail clamping and closing power cam 26 in an up-down pin connection manner, and the two tail clamping and closing rocker arms 29 are driven to simultaneously rotate to clamp the upper die closing blank and lower die closing adjusting screws 27 and release the two tail clamping and lower die closing rocker arms 70.

In this embodiment, the multi-station die heading mechanism 30 includes a heading slider 31 capable of moving left and right and a set of heading dies 32 containing different internal dies and arranged side by side on the heading slider 31 for sequentially cooperating to finally form one end of the blank 70 into a desired screw head structure, one heading die 32 corresponds to one conveying station on the conveying mechanism 10, the conveying stations corresponding to the set of heading dies 32 are adjacent conveying stations, and a blank end clamping die 60 containing material clamping positions corresponding to the set of heading dies is arranged at an end position of the conveying station corresponding to the set of heading dies 32, so as to clamp and expose a volume required by the screw head structure before heading the corresponding blank 70 end, thereby facilitating heading forming.

In this embodiment, the thread rolling mechanism 40 includes a thread rolling machine base 41 and a thread rolling fixed plate 42 fixedly disposed on the thread rolling machine base 41, and a thread rolling movable plate 43 is further disposed opposite to the thread rolling fixed plate 42, the thread rolling movable plate 43 is fixedly connected with a thread rolling sliding block 44, and the thread rolling sliding block 44 is matched with a vertical sliding slot 45 disposed on the thread rolling machine base 41 to be capable of moving up and down relative to the vertical sliding slot 45.

Preferably, the thread rolling slide block 44 of the thread rolling mechanism 40, the heading slide block 31 of the multi-station die heading mechanism 30 and the blank end clamping die 60 are all driven by the same power device;

specifically, the power device comprises a second motor 1 and a second rotating shaft 2 driven by the second motor 1, specifically, two ends of the second rotating shaft 2 are sleeved with flywheels 9, a power output shaft of the second motor 1 drives one of the flywheels 9 to rotate through a power belt, so as to drive the second rotating shaft 2 to rotate, the second transmission shaft 2 is erected on a rack 3, the rack 3 is further provided with a horizontal chute 4 matched with a heading slider 31, a section of eccentric crankshaft 5 is arranged in the middle of the second rotating shaft 2, an impact connecting rod 6 is slidably sleeved on the eccentric crankshaft 5, the other end of the impact connecting rod 6 is connected with the heading slider 31, the impact connecting rod 6 is driven to move when the eccentric crankshaft 5 rotates, the heading slider 31 is driven to move left and right along the horizontal chute 4, so as to drive the heading die 32 to move back and forth, so as to realize multi-station die striking on the end of the disc element wire, and gradually form a screw head structure;

the blank end clamping die 60 comprises a die closing die 61, a die closing clamping adjusting screw 62 with a spring, a die closing clamping rocker arm 63 and a die closing cam 64 which are matched in sequence, the die closing die 61 comprises a fixed upper die 611 and a movable lower die 612, the blank end clamping die 60 is the blank end clamping die 60 comprising a clamping position corresponding to a group of heading die quantities, namely the fixed upper die 611 and the movable lower die 612 of the die closing die 61 are provided with the clamping position corresponding to the group of heading die quantities, and in the embodiment, the blank end clamping die 60 comprises 2 clamping positions; the fixed upper die 611 is fixed on the frame 3, the lower part of the movable lower die 612 is connected with the die assembly clamping adjusting screw 62 with the spring, the middle part of the die assembly clamping rocker arm 63 is connected and arranged on the frame 3 through a pin shaft, one end of the die assembly clamping rocker arm 63, which is matched with the die assembly die closing cam 64, is provided with a second top wheel 65, the second transmission shaft 2 driven by a second motor 1 is also driven by a gear to drive a cam transmission shaft, the die assembly die closing cam 64 is fixedly sleeved on the cam transmission shaft, and when the second transmission shaft 2 rotates, the die assembly die closing cam 64 is driven to jack up the second top wheel 65 so as to drive the die assembly clamping rocker arm 63 to rotate, so that the die assembly clamping adjusting screw 62 with the spring is driven to move up and down, and the die assembly die 61 is driven to close or loosen through the die assembly clamping adjusting screw 62 with the spring so as to clamp or loosen the element wire;

the tail of the second rotating shaft 2 is further fixedly connected with a rotating disc 7, a thread rolling power crankshaft 8 is eccentrically arranged on the rotating disc 7, a thread rolling main power output rod 46 is slidably sleeved on the thread rolling power crankshaft 8, the other end of the thread rolling main power output rod 46 is sequentially connected with a thread rolling power rocker 47 and a thread rolling driven power input rod 48, the middle of the thread rolling power rocker 47 is supported through a supporting seat, and the thread rolling is connected with the thread rolling sliding block 44 through a pin shaft by the other end of the thread rolling driven power input rod 48, so that the thread rolling can move up and down relative to the vertical sliding groove 45, and thread rolling forming is achieved.

In this embodiment, the straightening and cutting mechanism 50 includes a straightening unit 51 and a shearing unit 52 located at the front end of the straightening unit, the straightening unit 51 includes a plurality of sets of rollers for straightening, the shearing unit 52 includes a material cutting fixed die 53 and a material cutting movable die 54, and the material cutting movable die 54 is driven by a driving unit to move up and down. More preferably, the driving unit is a cylinder.

In this embodiment, a wire rod reel 80 for feeding the straightening and cutting mechanism 50 is further provided in front of the straightening and cutting mechanism 50.

The base 11 on the conveying mechanism, the base 25 on the tail clamping mechanism, the frame 3 on the multi-station die heading mechanism and the thread rolling machine base 41 on the thread rolling mechanism are arranged on an integral base 100 in a mutually matched mode.

According to the four-in-one self-drilling screw machine, the manufacturing process of the self-drilling screw is as follows:

1. straightening and cutting the wire rod of the wire rod by a straightening and cutting mechanism, and conveying the blank to the next station by a conveying mechanism;

2. clamping the tail part of the blank into a drill tail shape by matching an upper die and a lower die of the tail clamping mechanism, and conveying the blank to the next work station by the conveying mechanism;

3. clamping the blank end by a clamping die, forging and preforming the blank head by using a heading die positioned at the front part in a group of heading dies of a multi-station die heading mechanism, and conveying the blank head to the next station by a conveying mechanism;

4. clamping the blank end by a clamping die, using a rear heading die in a group of heading dies of a multi-station die heading mechanism to forge the head of the blank to form, and conveying the blank to a next station by a conveying mechanism;

5. the thread is formed by matching a thread rolling fixed plate and a thread rolling movable plate of a thread rolling mechanism to roll threads, and the finished product is finished.

The utility model discloses a four unification bores tail screw machines, especially has following advantage:

1. the four processes are concentrated and combined on a platform by a conveying screw in a modularized manner, so that the whole process only needs one fourth of the original required field area;

2. performing and shaping the head required for shaping a screw head structure by using two groups of dies respectively, and forging the head shape of a finished product at the same time, wherein the speed is doubled;

3. the four processes are combined in a modularized way, so that overlapped wasted motor power and oil are eliminated, at least 30% of electricity cost and oil are saved, and carbon emission is reduced;

4. the four processes are combined in a modularized manner, so that the labor cost of three technicians is saved;

5. when the tail clamping mechanism is disassembled to form three processes for simultaneous processing, the infinite-length screw can be formed;

6. compared with the traditional one-die two-punch infinite-length die spotting machine which can output one screw in two cycles, the invention has the advantage that the output speed is doubled.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (10)

1. Four unification bores tail screw machine for with the dish yuan wire rod processing become the head for screw head, afterbody for boring the tail, middle screwed bores tail screw, its characterized in that, including a marching type be used for the disk yuan wire rod of segmentation to carry conveying mechanism, at least one clamp tail mechanism, at least one multistation mould mechanism of taking a head and a thread rolling mechanism, the last conveying station that contains a plurality of parallel of conveying mechanism, the conveying mechanism front end still is equipped with blanking complex straightening shutdown mechanism with it to be used for straightening the disk yuan wire rod and cut off according to the required length of the screw blank of boring, then fall into conveying mechanism on, clamp tail mechanism and multistation mould mechanism of taking a head set up respectively in two sides of conveying mechanism and respectively correspond different conveying stations and carry out clamp tail shaping or the shaping of taking a head to the blank that can carry the station simultaneously to the difference, thread rolling mechanism sets up the afterbody in conveying mechanism and carries out the thread rolling shaping to the blank that falls into thread rolling mechanism from the conveying mechanism afterbody.

2. The four-in-one self-drilling screw machine according to claim 1, wherein the conveying mechanism is a sprocket step-by-step pinch mechanism or a spiral forward step-by-step conveying mechanism consisting of two parallel screw conveying guide rods.

3. The four-in-one self-drilling screw machine as claimed in claim 2, wherein when the conveying mechanism is a screw forward stepping conveying mechanism, the screw forward stepping conveying mechanism comprises a base and two identical screw conveying guide rods parallelly arranged on the base at a certain distance, the two screw conveying guide rods are synchronously rotated by the driving of one or two motors, and the pitch grooves of the screw conveying guide rods are adapted to the diameter of the disc wire so as to step forward the disc wire when rotating.

4. The four-in-one self-drilling screw machine according to claim 1, wherein the tail clamping mechanism comprises an upper die, a lower die and a driving device for driving the upper die and the lower die to move together and to the middle for forming the self-drilling.

5. The four-in-one self-drilling screw machine according to claim 4, wherein the driving device comprises a first motor and a first rotating shaft driven by the first motor, the first rotating shaft is arranged on a base, the first rotating shaft is provided with a clamping and clamping power cam with two ends protruding outwards, the upper part of an upper die and the lower part of a lower die for self-drilling molding are respectively connected with a clamping and clamping adjusting screw with a spring, the other end of the clamping and clamping adjusting screw is respectively connected with a clamping and clamping rocker arm, the two clamping and clamping rocker arms are connected and arranged on the base in a pin shaft manner of up and down, the other end of each clamping and clamping rocker arm is provided with a first ejecting wheel, the two first ejecting wheels on the two clamping and clamping rocker arms are respectively matched and arranged with the clamping and clamping power cam up and down, and the clamping and clamping power cam simultaneously ejects or puts down the two first ejecting wheels to drive the two clamping and clamping rocker arms to rotate in opposite directions, and further drives the two clamping and clamping adjusting screws with springs to simultaneously drive the upper die and the lower die to simultaneously release the self-drilling molding.

6. The four-in-one self-drilling screw machine according to claim 1, wherein the multi-station die heading mechanism comprises a heading slider capable of moving left and right and a group of heading dies containing different internal dies and arranged side by side on the heading slider and used for matching in sequence to finally form one end of a blank into a required screw head structure, one heading die corresponds to one conveying station on the conveying mechanism, the conveying stations corresponding to one group of heading dies are adjacent conveying stations, and a blank end clamping die containing material clamping positions corresponding to the number of the group of heading dies is arranged at the end position of the conveying station corresponding to the group of heading dies, so that the corresponding blank end is clamped and a required volume of the screw head structure is exposed before heading to facilitate heading forming.

7. The four-in-one self-drilling screw machine according to claim 1, wherein the thread rolling mechanism comprises a thread rolling machine base and a thread rolling fixed plate fixedly arranged on the thread rolling machine base, and a thread rolling movable plate is further arranged opposite to the thread rolling fixed plate and fixedly connected with a thread rolling sliding block, and the thread rolling sliding block is matched with a vertical sliding groove arranged on the thread rolling machine base so as to be capable of moving up and down relative to the vertical sliding groove.

8. The four-in-one self-drilling screw machine according to any one of claims 6 or 7, wherein the thread rolling slide block of the thread rolling mechanism, the head driving slide block of the multi-station die head driving mechanism and the blank end clamping die are driven by the same power device.

9. The four-in-one self-drilling screw machine according to claim 8, wherein the power device comprises a second motor and a second rotating shaft driven by the second motor, the second driving shaft is erected on a frame, the frame is further provided with a horizontal chute matched with the heading slider, an eccentric crankshaft is arranged in the middle of the second rotating shaft, an impact connecting rod is slidably sleeved on the eccentric crankshaft, the other end of the impact connecting rod is connected with the heading slider, the impact connecting rod is driven to move when the eccentric crankshaft rotates, the heading slider is driven to move left and right along the horizontal chute by the impact connecting rod, and then a heading die on the multi-station die heading mechanism is driven to move back and forth, so that the end of the wire rod of the disc element is struck and is gradually formed into a screw head structure;

the end clamping die of the blank comprises a die assembly die, a die assembly clamping adjusting screw with a spring, a die assembly clamping rocker arm and a die assembly die closing cam which are matched in sequence, the die assembly die comprises a fixed upper die and a movable lower die, the fixed upper die is fixed on a rack, the lower part of the movable lower die is connected with the die assembly clamping adjusting screw with the spring, the middle part of the die assembly clamping rocker arm is connected and arranged on the rack through a pin shaft, one end, matched with the die assembly die closing cam, of the die assembly clamping rocker arm is provided with a second top wheel, the second transmission shaft driven by a second motor drives a cam transmission shaft through a gear, the die assembly die closing cam is fixedly sleeved on the cam transmission shaft, and when the second rotation shaft rotates, the die assembly die closing cam is driven to jack the second top wheel so as to drive the die assembly clamping rocker arm to rotate, so as to drive the die assembly clamping adjusting screw with the spring to move up and down, and further drive the die assembly clamping adjusting screw with the spring to close or loosen the die so as to clamp or loosen coiled wire;

the tail part of the second rotating shaft is further fixedly connected with a rotating disc, a thread rolling power crankshaft is eccentrically arranged on the rotating disc, a thread rolling main power output rod is sleeved on the thread rolling power crankshaft in a sliding mode, the other end of the thread rolling main power output rod is sequentially connected with a thread rolling power rocker and a thread rolling driven power input rod, the middle of the thread rolling power rocker is supported through a supporting seat, and the other end of the thread rolling driven power input rod is connected with the thread rolling sliding block through a pin shaft, so that the thread rolling can move up and down relative to the vertical sliding groove, and thread rolling forming is achieved.

10. The four-in-one self-drilling screw machine according to claim 1, wherein the straightening and cutting mechanism comprises a straightening unit and a shearing unit, the straightening unit and the shearing unit are matched with each other, the shearing unit is positioned at the front end of the straightening unit, the straightening unit comprises a plurality of groups of rollers for straightening, the shearing unit comprises a material cutting fixed die and a material cutting movable die, and the material cutting movable die is driven by a driving unit to move up and down; and a wire rod frame for feeding the straightening and cutting mechanism is arranged in front of the straightening and cutting mechanism.

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