CN113183074A

CN113183074A - Handheld automatic screw machine

Info

Publication number: CN113183074A
Application number: CN202110626599.XA
Authority: CN
Inventors: 林文
Original assignee: Zhejiang Wuhuan Automation Equipment Co ltd
Current assignee: Zhejiang Wuhuan Automation Equipment Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-07-30

Abstract

The invention discloses a hand-held automatic screw machine, which comprises an electric screwdriver, a driving device and a clamping mouth structure, wherein the clamping mouth structure comprises a clamping mouth structure provided with a material storage cavity and two clamping mouth blocks rotatably arranged on the clamping mouth structure, the top end part of the clamping mouth structure is movably sleeved with a transmission sleeve fixedly connected with a driving rod, an elastic piece is arranged between the transmission sleeve and the clamping mouth structure, a screwdriver head of the electric screwdriver is used for pushing and positioning a screw in the material storage cavity at a material clamping opening between the two clamping mouth blocks, the design ensures that the screwdriver head keeps a vertical state when pushing the screw, can quickly and accurately align a hole position of an installation position, and then the screwdriver head is used for inserting the screw into a hole for locking, the automatic screw machine adopting the scheme can ensure the verticality when the screwdriver head and the screw are installed and locked, avoids the situation that the screw deflects and shakes, has good use stability and can quickly install the screw, the installation is accurate reliable, promotes product performance and market competition.

Description

Handheld automatic screw machine

Technical Field

The invention relates to the technical field of screw machines, in particular to a handheld automatic screw machine.

Background

The hand-held screw machine is also called an automatic screw locking machine, is an automatic device which uses an automatic mechanism to replace hands to finish taking, placing and screwing screws, can be used for automatically assembling small column-shaped parts by slight change, and has very wide application prospect. The hand-held screw machine can release one hand, only one hand is needed to align the screw hole position locking screw, after one screw is locked, only the screwdriver needs to be lifted to align the next screw hole position locking screw, the machine can automatically convey one screw to the lower part of the screwdriver mouth in the moment of lifting the screwdriver, the next screw is waited to be locked, and the operation is repeated.

For example, chinese patent document CN210818343U discloses a hand-held screw driving machine, which includes an electric screwdriver, a chuck assembly and an absorbing member, wherein one end of the electric screwdriver is provided with a screwdriver head capable of rotating circumferentially; the chuck component is sleeved on the batch head and can move up and down along the batch head, the chuck component is provided with a screw conveying channel communicated with the screw feeding machine through a screw guide pipeline, and the chuck component can push screws entering the screw conveying channel to the free end of the batch head through moving up and down; the adsorption piece is arranged on the side wall and/or the end wall of the chuck component and can generate adsorption force for adsorbing the screw positioned at the free end of the batch head, the chuck component comprises a chuck body and a clamping jaw arranged at the lower end part of the chuck body, the clamping jaw is provided with a screw storage area for accommodating the screw, and the batch head penetrates through the screw storage area. When the screwdriver is used, the screw is adsorbed at the free end through the magnetic screwdriver head, then the screw is pushed out from the screw storage area, and finally the screwdriver head adsorbing the screw is aligned to a hole position to be installed to screw the screw, so that installation can be completed.

As can be seen from the structure of the above-mentioned handheld screw locking machine, the following problems still exist during the use process: 1. in the process of screwing, the clamping jaw needs to be opened at a certain angle, the screw is adsorbed by the screwdriver head and is completely pushed out of the screw storage region, and then screwing is carried out by aligning with a hole site; 2. the screw feeding of the screw machine is controlled by a control switch on an electric screwdriver, generally, the control switch is continuously pressed twice, the screwdriver head is driven to reset, then the screw is sent into a screw storage area through a screw conveying channel, however, the misoperation situation easily exists, namely, when the screwdriver head is not in place, the next screw feeding is carried out, the working procedure matching is not coordinated, the feeding error is large, and the phenomenon of screw blocking is easy to occur.

Disclosure of Invention

The invention aims to solve the technical problem that the screw adsorbed by a screwdriver head cannot keep the verticality in the screwing process of a screw locking machine in the prior art, so that the screw has deflection and shaking conditions, the use stability is poor, and the use performance of a product is influenced, thereby providing the handheld automatic screw machine which can keep the verticality between the screwdriver head and the screw, prevent the deflection and shaking conditions of the screw, has good use stability and improves the use performance of the product.

In order to solve the above problems, the present invention provides a hand-held automatic screw machine, comprising:

the electric screwdriver comprises a screwdriver head for locking a screw;

the driving device is arranged outside the electric screwdriver in parallel and comprises a driving rod which does lifting motion along the axial direction of the screwdriver head;

the clamping nozzle structure comprises a material storage cavity connected with the feeding structure, two clamping nozzle blocks arranged on the bottom end part of the clamping nozzle structure in a relatively rotating mode, and a material clamping port formed between the two clamping nozzle blocks and communicated with the material storage cavity along the axial direction of the batch head;

the actuating lever passes through drive structure and drives the mouth structure edge the axial of criticizing the head is done and is reciprocated, drive structure includes: the transmission sleeve is movably sleeved at the top end part of the mouth clamping structure and is fixedly connected with the driving rod, the elastic piece is arranged between the transmission sleeve and the top end part of the mouth clamping structure and is used for transmitting movement and force, and the limiting stopper is arranged on the mouth clamping structure to limit the transmission sleeve to be separated from the top end part of the mouth clamping structure;

the screwdriver head penetrates through the transmission sleeve and extends into the material storage cavity to be opposite to the material clamping opening, and the screwdriver head pushes and positions the screw in the material storage cavity at the material clamping opening so that one end of the screw extends out of the material clamping opening along the axial direction of the material clamping opening; when the screwdriver head drives the screw to be locked into the hole, the clamping nozzle block is pushed by the hole, and the clamping nozzle structure extrudes the elastic piece to move upwards for a certain distance relative to the screwdriver head.

In the above-mentioned hand-held automatic screw machine, the top end portion of the clamping nozzle structure is a guide rod structure extending through two ends of the transmission sleeve, the limiting stopper is arranged on the guide rod structure and is matched and abutted with the upper end of the transmission sleeve, the elastic member is arranged in the transmission sleeve and is extruded by the guide rod structure, the guide rod structure is provided with a guide hole extending along the axial direction of the screwdriver head and communicated with the storage cavity, and the screwdriver head penetrates into the storage cavity through the guide hole.

In the above-mentioned hand-held automatic screw machine, the transmission sleeve includes an accommodating groove with an opening facing the clamping mouth structure, and a through hole structure disposed at the upper end of the transmission sleeve and communicating with the accommodating groove, and the guide rod structure penetrates between the accommodating groove and the through hole structure; the side wall of the transmission sleeve is provided with a transmission arm connected with the driving rod, and one end of the driving rod is fixed on the transmission arm.

In the above-mentioned hand-held automatic screw machine, the guide arm structure includes the looks adaptation hold in the connection boss in the storage tank, and by the guide arm core that the connection boss extends to through-hole structure department, the elastic component is established for the cover the spring structure on the guide arm core, the one end butt of spring structure is in on the connection boss, the other end butt is in on the inner end of storage tank.

In the above-mentioned hand-held automatic screw machine, the transmission sleeve is provided with a detection switch, and the guide rod structure is correspondingly provided with a trigger for triggering the detection switch to be turned on or off; the guide rod structure moves upwards along the axial direction of the screwdriver head by extruding the elastic part when the clamping nozzle structure is extruded and pushed by external force, and drives the trigger part to be separated from the detection switch, so that the detection switch sends a signal for stopping feeding; the guide rod structure moves downwards along the axial direction of the screwdriver head under the action of the elastic force of the elastic piece and drives the trigger piece to be in contact with the detection switch, so that the detection switch sends a signal for starting feeding.

In the above-mentioned hand-held automatic screw machine, the detection switch is a microswitch arranged at the upper end of the transmission sleeve, the trigger part is a limit stopper arranged opposite to the microswitch up and down, and the upper end of the transmission sleeve is provided with an installation groove suitable for installing the microswitch.

In the above-mentioned hand-held automatic screw machine, the detection switch is a magnetic induction switch arranged at the upper end of the transmission sleeve, the trigger piece is a magnet piece arranged on the limit stopper corresponding to the magnetic induction switch, and the upper end of the transmission sleeve is provided with an installation groove suitable for installing the magnetic induction switch.

In the above-mentioned hand-held automatic screw machine, the feeding structure includes a feeding pipeline obliquely arranged on the clamping nozzle structure, and a material guide pipe connecting the feeding pipeline and the feeding machine; the limiting stopper is of an annular structure and is fixedly arranged at one end of the guide rod core extending out of the through hole structure.

In the above-mentioned hand-held automatic screw machine, the drive arrangement is the cylinder device, the cylinder device through the cutting ferrule structure with the electricity is criticized and is dismantled the connection, the cutting ferrule structure includes transverse connection the cylinder device with the electricity criticize the location clamping, and fix through the fastener two splint at location clamping both ends, form respectively between two splint and the location clamping both ends and be used for the fastening two centre gripping holes that cylinder device and electricity were criticized, the cylinder device can for the electricity criticize along its mounted position is adjusted from top to bottom to the axial in centre gripping hole.

In the above-mentioned hand-held automatic screw machine, the nozzle clamping blocks are rotatably arranged in the positioning grooves at both sides of the bottom end part of the nozzle clamping structure through a pin shaft structure, an installation spring is arranged between the upper end positioning grooves of the two nozzle clamping blocks, and the installation spring applies opposite involutive elastic force to the two nozzle clamping blocks; the two mouth clamping blocks are oppositely combined to form a mouth clamping channel extending along the axial direction of the screwdriver head, the bottom end of the mouth clamping channel is provided with a mouth clamping port, an arc inclined plane inclined towards the axis of the mouth clamping port is arranged in the mouth clamping port, and the head end of the screw is matched and positioned on the arc inclined plane.

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. the invention provides a hand-held automatic screw machine, in the process of locking a screw, a driving device drives a clamping nozzle structure to move upwards relative to a screwdriver head through a transmission structure, the screwdriver head pushes and positions the screw in a material storage cavity at a material clamping port between two clamping nozzle blocks, the head end of the screw is pressed in the material clamping port by the screwdriver head, one end with a thread extends out of the material clamping port along the axial direction of the material clamping port, the screwdriver head is designed to keep a vertical state when pressing against the screw, the original arrangement of an adsorption piece is saved, the structure is simplified, a hole position of an installation position can be quickly and accurately aligned, then the screw is inserted into a hole through the screwdriver head to be locked, the two clamping nozzle blocks can be in extrusion contact with the installation position of the hole in the process of gradually locking the screw into the hole, namely, the clamping nozzle structure bears the reaction force of the installation position when driving the screw, so that the clamping nozzle structure moves upwards a certain distance relative to the screwdriver head through an extrusion elastic piece, both played the atress cushioning effect, can make the screw release again and press from both sides the feed opening locking and target in place, the cooperation transmission is reliable, and the automatic screw machine of hand-held type of this scheme design of adoption can guarantee the straightness that hangs down between batch head and the screw when locking screw, avoids the screw to take place the condition that the incline and rock, and the stability in use is good, can install the screw fast, and the installation is accurate reliable, is favorable to improving the installation effectiveness, promotes product performance and market competition.

2. The invention provides a hand-held automatic screw machine, wherein a clamping mouth structure extends through two ends of a transmission sleeve through a guide rod structure, the clamping mouth structure is arranged, the clamping mouth structure can be pushed by a hole in the mounting position in the screw locking process, the clamping mouth structure can push an elastic piece to move upwards along the axial direction of a bit through the guide rod structure, the bit is in a downwards moving state relative to the clamping mouth structure at the moment, so that the bit drives a screw to completely extend out of a material clamping port to realize mounting, the clamping mouth structure loses the external force pushing effect after the screw is locked, the elastic piece drives the clamping mouth structure to move downwards along the axial direction of the bit by virtue of the elastic force of the elastic piece, the bit is automatically returned to a material storage cavity, the guide rod structure plays a resetting role in the clamping mouth structure, the guide rod structure abuts against the upper end of the transmission sleeve through a limiting stopper in the downwards moving process, and plays a limiting role in relative movement between the guide rod structure and the transmission sleeve, the transmission sleeve is prevented from being separated from the clamping mouth structure, so that the guide rod structure and the transmission sleeve are reliably connected elastically through the elastic piece, and the matching transmission is reliable.

3. The invention provides a hand-held automatic screw machine, when the electric screwdriver drives the screwdriver head to lock the screw into the hole, the guide rod structure moves upwards along the axial direction of the screwdriver head by extruding the elastic piece due to the extrusion pushing action of the external force of the installation position of the hole, the trigger piece is separated from the detection switch under the driving of the guide rod structure, the detection switch sends a signal for stopping feeding at the moment, the automatic screw machine is ensured not to carry out feeding operation in the screwing process, when the screwdriver head locks the screw in place and moves away from the hole position, the screwdriver head structure loses the extrusion pushing action of the external force at the moment, the guide rod structure moves downwards along the axial direction of the screwdriver head under the elastic force of the spring piece, the trigger piece is contacted with the detection switch under the driving of the guide rod structure, the detection switch sends a signal for starting feeding, and the screwdriver head also automatically retracts into the screwdriver head structure, therefore, the next feeding process is started, the design has the advantages that the detection switch and the trigger part are in contact or separation according to the motion fit between the guide rod structure and the transmission sleeve, so that the automatic feeding control of each round of the automatic screw machine is controlled, the occurrence of misoperation and premature feeding accidents caused by blocking is avoided, the accuracy and the stability of feeding control are ensured, the process coordination is coordinated and reliable, and the use safety is good.

4. According to the handheld automatic screw machine provided by the invention, the circular arc inclined plane inclined towards the axis of the screw clamping port is arranged in the screw clamping port, the screw is pushed into the position of the screw clamping port along the pipe nozzle channel through the screwdriver head, the head end of the screw is matched and positioned on the circular arc inclined plane, so that the screw is positioned at the screw clamping port to prepare for the next locking operation, the screw and the screwdriver head are in straight line abutting connection along the axial direction of the screw clamping port, and meanwhile, one end of the screw with a thread structure straightly extends out of the screw clamping port, so that the verticality of installation and locking between the screwdriver head and the screw is ensured, the installation stability is good, and the use is more reliable.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below.

FIG. 1 is a schematic perspective view of a hand-held automatic screw machine according to the present invention;

FIG. 2 is a schematic cross-sectional view of a hand-held automatic screw machine according to the present invention;

FIG. 3 is a schematic view of the hand-held automatic screw machine of the present invention in a configuration ready for loading;

FIG. 4 is a schematic structural diagram of the hand-held automatic screw machine of the present invention after completing the loading;

FIG. 5 is a schematic structural view of the hand-held automatic screw machine of the present invention during screw tightening;

FIG. 6 is a schematic structural view of the hand-held automatic screw machine of the present invention which is reset after the screw driving;

FIG. 7 is a schematic view of the mounting structure of the detection switch of the present invention on the transmission sleeve;

description of reference numerals: 1. electric screwdriver; 11. a batch head; 2. a drive device; 21. a drive rod; 3. a nip structure; 31. a material storage cavity; 32. a clipping block; 33. a material clamping port; 34. positioning a groove; 35. a nozzle channel; 36. a circular arc inclined plane; 37. a feed line; 38. a material guide pipe; 4. a transmission sleeve; 41. a containing groove; 42. a via structure; 43. a drive arm; 5. an elastic member; 6. a guide bar structure; 61. connecting the bosses; 62. a guide rod core; 7. a limit stopper; 8. a detection switch; 9. a card sleeve structure; 91. positioning the clamp; 92. and (4) clamping the plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment provides a hand-held automatic screw machine as shown in fig. 1-7, comprising:

the electric screwdriver 1 comprises a screwdriver head 11 for locking a screw, wherein A in the drawing indicates the screw;

the driving device 2 is arranged outside the electric screwdriver 1 in parallel and comprises a driving rod 21 which does lifting motion along the axial direction of the screwdriver head 11;

the clamping nozzle structure 3 comprises a material storage cavity 31 connected with the feeding structure, two clamping nozzle blocks 32 arranged on the bottom end parts of the clamping nozzle structure in a relatively rotating mode, and a material clamping port 33 formed between the two clamping nozzle blocks 32 and communicated with the material storage cavity 31 along the axial direction of the batch head 11;

the actuating lever 21 drives through transmission structure the mouth clamping structure 3 is followed the axial of criticizing head 11 is done and is reciprocated, transmission structure includes: the transmission sleeve 4 is movably sleeved at the top end part of the mouth clamping structure 3 and is fixedly connected with the driving rod 21, the elastic piece 5 is arranged between the transmission sleeve 4 and the top end part of the mouth clamping structure 3 and is used for transmitting movement and force, and the limiting stopper 7 is arranged on the mouth clamping structure 3 to limit the transmission sleeve 4 to be separated from the top end part of the mouth clamping structure;

criticize head 11 and pass transmission cover 4 stretches into in the storage cavity 31 with it is relative to press from both sides material mouth 33, and by criticize head 11 will screw in the storage cavity 31 supports to push away the location and is in press from both sides material mouth 33 department, make the one end of this screw follow the axial that presss from both sides material mouth 33 stretches out press from both sides material mouth 33, at this moment the screw has accomplished the material loading in double-layered mouth structure 3 and has prepared, will lock in the hole of predetermineeing the mounted position according to the screw, consequently, criticize 11 drive screw lock downthehole messenger press from both sides mouth piece 32 and receive the crowded push action of hole position, by press from both sides mouth structure 3 extrusion elastic component 5 for criticize 11 moves up a certain distance, simultaneously, two press from both sides mouth pieces and can open certain angle and supply the screw to wear out when receiving screw locking removal to realize the locking of screw.

The above embodiment is the core technical solution of this embodiment, in the process of locking the screw, the driving device 2 drives the mouthpiece structure 3 to move upward relative to the bit 11 through the transmission structure, the screw in the storage cavity 31 is pushed and positioned at the material clamping port 33 between the two mouthpiece blocks 32 through the bit 11, at this time, the head end of the screw is pressed against the material clamping port 33 by the bit 11, the end with the screw thread extends out of the material clamping port 33 along the axial direction of the material clamping port 33, and is ready for the next step of locking the screw, so that the bit 11 keeps a vertical state when pressing against the screw, the original arrangement of the adsorption member is omitted, the structure is simplified, the hole position of the installation position can be quickly and accurately aligned, then the screw is inserted into the hole through the bit 11 to be locked, referring to fig. 5-6, the screw is forced to push the two mouthpiece blocks 32 and extend out of the material clamping port 33 in the locking process, according to two clamping jaw pieces 32, the clamping jaw pieces are abutted to the top of the hole position, and in the process that a screw is gradually locked into the hole, the clamping jaw pieces can be in extrusion contact with the installation position of the hole, namely, the clamping jaw structure 3 is subjected to reverse thrust action of the installation position when the screw is screwed, so that the clamping jaw structure 3 moves upwards for a certain distance relative to the screwdriver head 11 through the extrusion elastic piece 5, the stress buffering effect is achieved, the screw can be completely pushed out of the clamping port 33 to achieve locking, the matching is reliable, the handheld automatic screw driver adopting the design of the scheme can guarantee the verticality between the screwdriver head and the screw when the screw is locked, the situation that the screw is deflected and shaken is avoided, the use stability is good, the screw can be quickly installed, the installation is accurate and reliable, the installation efficiency is improved, and the product performance and the market competitiveness are improved.

The specific arrangement of the structure of the nip is described in detail below with reference to fig. 2-6:

the top end portion of the clamping nozzle structure 3 is provided with a guide rod structure 6 extending through two ends of the transmission sleeve 4, the limiting stopper 7 is arranged on the guide rod structure 6 and is matched and abutted with the upper end of the transmission sleeve 4, the elastic piece 5 is arranged in the transmission sleeve 4 and is extruded by the guide rod structure 6, the guide rod structure 6 is provided with a guide hole extending along the axial direction of the screwdriver head 11 and communicated with the storage cavity 31, the screwdriver head 11 penetrates into the storage cavity 31 through the guide hole, the transmission sleeve 4 is further provided with a containing groove 41 with an opening facing the clamping nozzle structure 3 and a through hole structure 42 arranged at the upper end of the transmission sleeve 4 and communicated with the containing groove 41, and the guide rod structure 6 penetrates between the containing groove and the through hole structure 42. According to the structural arrangement, referring to fig. 4, a bolt is aligned and placed in a hole of a mounting position, the clamping nozzle structure 3 is pushed by the mounting position of the hole in the screw locking process, the clamping nozzle structure 3 extrudes the elastic member 5 through the guide rod structure 6 to move upwards along the axial direction of the bit 11, referring to fig. 5, the bit 11 is in a downwards moving state relative to the clamping nozzle structure 3 at the moment, so that the bit 11 drives the screw to completely extend out of the material clamping opening 33 to realize locking and mounting, the clamping nozzle structure 3 is moved away from the mounting position after the screw is locked, so that the external force pushing effect is lost, referring to fig. 6, the elastic member 5 drives the clamping nozzle structure 3 to move downwards along the axial direction of the bit 11 by virtue of the elastic force of the elastic member, so that the bit 11 automatically returns to the material storage cavity 31 to play a resetting role on the clamping nozzle structure 3, the guide rod structure 6 abuts against the upper end of the transmission sleeve 4 through the limiting stopper 7 in the downwards moving process, the guide rod structure 6 and the transmission sleeve 4 are limited in relative movement, the transmission sleeve 4 is prevented from being separated from the clamping mouth structure 3, the guide rod structure 6 and the transmission sleeve 4 are reliably connected elastically through the elastic piece 5, and the matching transmission is reliable.

As a specific structural configuration, as shown in fig. 2, the guide rod structure 6 includes a connection boss 61 adapted to be accommodated in the accommodation groove 41, and a guide rod core 62 extending from the connection boss 61 to the through hole structure 42, the elastic member 5 is a spring structure sleeved on the guide rod core 62, one end of the spring structure abuts against the connection boss 61, and the other end of the spring structure abuts against the inner end of the accommodation groove 41, so that the spring structure is designed to have a limiting and mounting effect, so that the spring structure is stably accommodated in the accommodation groove 41 of the transmission sleeve 4, and the nozzle structure 3 can realize its automatic reset function through the spring structure.

As shown in fig. 1-2, a transmission arm 43 connected to the driving rod 21 is disposed on a side wall of the transmission sleeve 4, one end of the driving rod 21 is fixed to the transmission arm 43, the transmission arm 43 is in an arc-shaped structure, and the transmission arm 43 is used to realize linkage matching between the transmission sleeve 4 and the driving rod 21, wherein the limit stopper 7 is in an annular structure and is fixedly disposed at one end of the guide rod core 62 extending out of the through hole structure 42, so that when the driving device 2 drives the transmission sleeve 4 to synchronously move downward through the driving rod 21, the transmission sleeve 4 applies pressure to the guide rod structure 6 through a spring structure, thereby driving the entire clamping mouth structure 3 to move downward; on the contrary, when the driving device 2 drives the transmission sleeve 4 to move up synchronously through the driving rod 21, the transmission sleeve 4 applies an upward moving thrust to the guide rod structure 6 by pushing against the limit stopper 7, so as to drive the whole mouth clamping structure 3 to move up.

The feeding structure comprises a feeding pipeline 37 obliquely arranged on the clamping nozzle structure 3 and a material guide pipe 38 connecting the feeding pipeline 37 and the feeding machine, when the driving device 2 drives the clamping nozzle structure 3 to move downwards along the axial direction of the batch head 11, the batch head 11 is in an upwards moving state in the storage cavity 31 of the clamping nozzle structure 3, as shown in fig. 2, when the batch head 11 is above the position where the feeding pipeline 37 is communicated with the storage cavity 31, the screws can fall into the storage cavity 31 through the feeding pipe 37 through the material guide pipe 38, so that the screwdriver head 11 does not obstruct the normal feeding of the screws, and the screw falling into the storage cavity 31 is also positioned right at the lower end of the bit 11, and as the clamping nozzle structure 3 moves upwards along the axial direction of the bit 11, the screw is pushed and positioned at the position of the material clamping opening 33 through the batch head 11, and the next locking operation of the screw is prepared.

Referring to fig. 1-2, the nozzle blocks 32 are rotatably disposed in positioning grooves 34 at two sides of the bottom end of the nozzle structure 3 through a pin structure, a mounting spring is disposed between the upper ends of the two nozzle blocks 32 and the positioning grooves 34, the mounting spring applies opposite involutive elastic force to the two nozzle blocks 32, when the screwdriver bit 11 presses the screw to lock the screw in the hole, the screw pushes the two nozzle blocks 32 open and extends out of the material clamping opening 33 under stress in the locking process, so that the two nozzle blocks 32 are adaptively opened by a certain angle, after the screw completely separates from the material clamping opening 33, the two nozzle blocks 32 are restored and involuted together under the action of the mounting spring, the two nozzle blocks 32 are involuted to form a nozzle channel 35 extending along the axial direction of the screwdriver bit 11, the bottom end of the nozzle channel 35 is provided with the material clamping opening 33, and the material clamping opening 33 is provided with an arc inclined plane 36 inclined toward the axis thereof, this kind of structure setting pushes the screw along mouthpiece passageway 35 and presss from both sides material mouth 33 position through batch head 11, makes the head end looks adaptation location of screw be in on the circular arc inclined plane 36 to be in with the screw location press from both sides material mouth 33 department and prepare for locking operation on next step, guarantee batch head 11 and screw are followed the axial that presss from both sides material mouth 33 is a straight line counterbalance connection, and the one end that makes the screw have helicitic texture is straight to be stretched out simultaneously outside pressing from both sides material mouth 33 to guarantee the straightness that hangs down of installation locking between batch head 11 and the screw, installation stability is good, uses more reliably.

In order to accurately control the automatic feeding process of the automatic screw machine and prevent the occurrence of feeding misoperation, as shown in fig. 7, a detection switch 8 is arranged on the transmission sleeve 4, and a trigger part for triggering the detection switch 8 to open or close is correspondingly arranged on the guide rod structure 6, so that when the screwdriver 1 drives the screwdriver head 11 to lock a screw into a hole, due to the squeezing action of external force of the installation position of the hole on the clamping nozzle structure 3, the guide rod structure 6 moves upwards along the axial direction of the screwdriver head 11 by squeezing the elastic part 5 when the clamping nozzle structure 3 is squeezed by the external force and drives the trigger part to separate from the detection switch 8, the detection switch 8 sends a signal for stopping feeding, the automatic screw machine is ensured not to carry out feeding operation in the screw driving process, and when the screwdriver head 11 locks the screw in place and moves away from the hole position, at this moment, the clamping nozzle structure 3 loses the pushing action of external force, so that the guide rod structure 6 moves downwards along the axial direction of the screwdriver head 11 under the action of the elastic force of the spring part, the trigger part is in contact with the detection switch 8 under the driving of the guide rod structure 6, the detection switch 8 sends a signal for opening feeding, and the screwdriver head 11 also automatically retracts into the clamping nozzle structure 3, so that the next feeding process is started.

As a preferred embodiment, as shown in fig. 7, the detection switch 8 is a micro switch disposed at the upper end of the transmission sleeve 4, the trigger is a limit stopper 7 disposed opposite to the micro switch in the vertical direction, an installation groove suitable for installing the micro switch is disposed at the upper end of the transmission sleeve 4, and the detection switch 8 realizes the trigger control of the feeding signal by adopting the matching form of the micro switch and the limit stopper 7, so that the structure setting is simplified, the installation and use are convenient, the feeding control is accurate and reliable, and the practicability is good.

As a deformable manner for implementing the above, the detection switch 8 is a magnetic induction switch disposed at the upper end of the transmission sleeve 4, the triggering element is a magnet piece disposed on the limit stopper 7 corresponding to the magnetic induction switch, an installation groove suitable for installing the magnetic induction switch is disposed at the upper end of the transmission sleeve 4, and when the magnet piece moves close to or contacts the magnetic induction switch along with the limit stopper 7, the magnetic induction switch can be triggered and send a feeding control signal. Therefore, the detection switch 8 realizes the triggering of the feeding signal by adopting the matching form of the magnetic induction switch and the magnet piece, and the feeding control is accurate and reliable. Those skilled in the art can select the specific arrangement of the detection switch 8 and the trigger according to the above description, and no further description is given to other equivalent embodiments.

In the embodiment, the driving device 2 is a cylinder device, the cylinder device is detachably connected with the electric screwdriver 1 through a sleeve structure 9, as shown in fig. 1, the ferrule structure 9 includes a positioning clip 91 connecting the cylinder device and the electric screwdriver 1 transversely, and two clamping plates 92 fixed at both ends of the positioning clamp 91 through fasteners, two clamping holes for fastening the cylinder device and the electric screwdriver 1 are respectively formed between the two clamping plates 92 and both ends of the positioning clamp 91, the structure is arranged, so long as the clamping plate 92 used for fastening the air cylinder device is correspondingly disassembled, the air cylinder device can be adjusted up and down relative to the electric screwdriver 1 along the axial direction of the clamping hole, thereby can adjust the relative movement distance between the double-layered mouth structure 3 and the batch head 11 to satisfy the bolt installation demand of different length, application range is wide, and the practicality is good.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A hand-held automatic screw machine, comprising:

the electric screwdriver (1) comprises a screwdriver head (11) for locking a screw;

the driving device (2) is arranged outside the electric screwdriver (1) in parallel and comprises a driving rod (21) which does lifting motion along the axial direction of the screwdriver head (11);

the clamping nozzle structure (3) comprises a material storage cavity (31) connected with the feeding structure, two clamping nozzle blocks (32) arranged on the bottom end part of the clamping nozzle structure in a relatively rotating mode, and a material clamping port (33) formed between the two clamping nozzle blocks (32) and communicated with the material storage cavity (31) along the axial direction of the batch head (11);

the actuating lever (21) drives through transmission structure the mouth structure (3) are followed the axial of criticizing head (11) is done and is reciprocated, transmission structure includes: the transmission sleeve (4) is movably sleeved at the top end part of the mouth clamping structure (3) and is fixedly connected with the driving rod (21), the elastic part (5) is arranged between the transmission sleeve (4) and the top end part of the mouth clamping structure (3) and is used for transmitting movement and force, and the limiting stopper (7) is arranged on the mouth clamping structure (3) to limit the transmission sleeve (4) to be separated from the top end part of the mouth clamping structure;

the screwdriver head (11) penetrates through the transmission sleeve (4) and extends into the material storage cavity (31) to be opposite to the material clamping port, and the screwdriver head (11) pushes and positions a screw in the material storage cavity (31) at the material clamping port (33) so that one end of the screw extends out of the material clamping port (33) along the axial direction of the material clamping port (33); when the screwdriver head (11) drives a screw to be locked into the hole, the clamping nozzle block (32) is extruded and pushed by the position of the hole, and the clamping nozzle structure (3) extrudes the elastic piece (5) to move upwards for a certain distance relative to the screwdriver head.

2. The hand-held automatic screw machine of claim 1, wherein: the guide rod structure (6) extending through two ends of the transmission sleeve (4) is formed at the top end of the clamping nozzle structure (3), the limiting stopper (7) is arranged on the guide rod structure (6) and is matched and abutted with the upper end of the transmission sleeve (4), the elastic piece (5) is arranged in the transmission sleeve (4) and is extruded by the guide rod structure (6), the guide rod structure (6) is provided with a guide hole which extends along the axial direction of the screwdriver head (11) and is communicated with the storage cavity (31), and the screwdriver head (11) penetrates into the storage cavity (31) through the guide hole.

3. A hand-held automatic screw machine according to claim 2, characterised in that: the transmission sleeve (4) comprises an accommodating groove (41) with an opening facing the nozzle clamping structure (3) and a through hole structure (42) which is arranged at the upper end of the transmission sleeve (4) and communicated with the accommodating groove (41), and the guide rod structure (6) penetrates between the accommodating groove and the through hole structure (42); the side wall of the transmission sleeve (4) is provided with a transmission arm (43) connected with the driving rod (21), and one end of the driving rod (21) is fixed on the transmission arm (43).

4. A hand-held automatic screw machine according to claim 3, characterised in that: guide arm structure (6) including the looks adaptation hold in connect boss (61) in storage tank (41), and by connect boss (61) to extend to guide arm core (62) of through-hole structure (42) department, elastic component (5) are established for the cover spring structure on the guide arm core (62), the one end butt of spring structure is in connect on boss (61), the other end butt is in on the inner of storage tank (41).

5. A hand-held automatic screw machine according to any one of claims 2 to 4, characterised in that: a detection switch (8) is arranged on the transmission sleeve (4), and a trigger piece for triggering the detection switch (8) to be turned on or turned off is correspondingly arranged on the guide rod structure (6); the guide rod structure (6) moves upwards along the axial direction of the screwdriver head (11) through the extrusion elastic part (5) when the clamping nozzle structure (3) is extruded and pushed by an external force, and drives the trigger part to be separated from the detection switch (8), so that the detection switch (8) sends a signal for stopping feeding; the guide rod structure (6) moves downwards along the axial direction of the screwdriver head (11) under the action of elastic force of the elastic piece and drives the trigger piece to be in contact with the detection switch (8), so that the detection switch (8) sends a signal for starting feeding.

6. The hand-held automatic screw machine of claim 5, wherein: the detection switch (8) is a microswitch arranged at the upper end of the transmission sleeve (4), the trigger part is a limit stopper (7) which is arranged opposite to the microswitch up and down, and the upper end of the transmission sleeve (4) is provided with an installation groove suitable for installing the microswitch.

7. The hand-held automatic screw machine of claim 5, wherein: the detection switch (8) is a magnetic induction switch arranged at the upper end of the transmission sleeve (4), the trigger piece is a magnet piece arranged on the limit stopper (7) corresponding to the magnetic induction switch, and an installation groove suitable for installing the magnetic induction switch is arranged at the upper end of the transmission sleeve (4).

8. The hand-held automatic screw machine of claim 4, wherein: the feeding structure comprises a feeding pipeline (37) obliquely arranged on the clamping nozzle structure (3) and a material guide pipe (38) connecting the feeding pipeline (37) and the feeding machine; the limiting stopper (7) is of an annular structure and is fixedly arranged at one end of the guide rod core (62) extending out of the through hole structure (42).

9. A hand-held automatic screw machine according to any one of claims 1 to 8, characterised in that: drive arrangement (2) are the cylinder device, the cylinder device pass through cutting ferrule structure (9) with electricity criticize (1) and can dismantle the connection, cutting ferrule structure (9) are including transverse connection cylinder device and electricity criticize location clamping (91) of (1), and fix through the fastener two splint (92) at location clamping (91) both ends form respectively between two splint (92) and location clamping (91) both ends and are used for the fastening two centre gripping holes of cylinder device and electricity criticize (1), the cylinder device can for electricity criticize (1) and follow its mounted position is adjusted from top to bottom to the axial in centre gripping hole.

10. The hand-held automatic screw machine of claim 1, wherein: the nozzle clamping blocks (32) are rotatably arranged in positioning grooves (34) on two sides of the bottom end part of the nozzle clamping structure (3) through pin shaft structures, mounting springs are arranged between the upper ends (32) of the two nozzle clamping blocks and the positioning grooves (34), and the mounting springs apply opposite involutory elastic force to the two nozzle clamping blocks (32); two press from both sides mouth piece (32) involution and form edge nozzle passageway (35) of batch head (11) axial extension, the bottom of nozzle passageway (35) is equipped with press from both sides material mouthful (33), press from both sides the circular arc inclined plane (36) that is equipped with in material mouthful (33) to its axle center slope, the head end looks adaptation of screw is fixed a position on circular arc inclined plane (36).